JP2016064458A - Automatic grinding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic grinding device which can process plural objects to be processed by a continuous batch process.SOLUTION: An automatic grinding device for continuously performing grinding processing of plural objects to be processed into components having a predetermined shapes includes: a delivery part the plural objects to be processed every unit numbers; a grinding part which grinds the objects of unit numbers delivered from the delivery part into a predetermined shape; a measurement part for measuring a grinding accuracy of the objects ground by the grinding part; and a distribution part which discharges the objects as a finished product of which grinding is completed in the case that a grinding accuracy measured by the measurement part falls within a predetermined value, and returns the objects as an unfinished product to the grinding part for second grinding in the case that said grinding accuracy is out of the predetermined value; and the above-said predetermined shapes have plural kinds of shapes.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an automatic grinding apparatus that can grind a metal workpiece into a part having a predetermined shape, and in particular, can batch-process a plurality of workpieces continuously and automatically.

  Many devices are used in devices and machines such as electronic devices, precision devices, transportation devices, and machine tools. Alternatively, not only the parts to be incorporated, but also a wide variety of parts that are attached and combined as needed. Furthermore, an instrument for maintaining these devices and machines is also required, and this maintenance instrument may require a wide variety of parts.

  In such a wide variety of parts, there is a part obtained by processing a metal workpiece into a specific shape (a special shape or a standardized shape).

  For example, a part having a specific shape is manufactured by changing the shape of a metal member (processing object) having a cylindrical shape by machining or electromachining. At this time, a part of the cylindrical member is ground, bent or curved by machining or electrical processing, and the member is given a specific shape.

  More specifically, by grinding the cylindrical member, the shape, diameter, thickness, etc. of a part of the member are changed, and the shape where the tip gradually changes the diameter, the tip gradually becomes sharp. A part having a specific shape is manufactured, such as a shape having a cross-sectional shape different from that of the other part, a shape having a different cross-sectional shape from the other part, and a shape having a different diameter or cross-sectional shape in the middle of the member.

  Alternatively, processing other than grinding such as bending or bending may be performed. Of course, various processes such as cutting and cutting may be performed on the member to produce a part having a desired shape.

  In manufacturing such various parts, a cylindrical metal member is often manufactured into a part having a specific shape by grinding. This is because parts having a specific shape (special shape) obtained by grinding in this way are often used in various parts such as the above-described electronic equipment, precision equipment, transportation equipment, machine tools, and maintenance tools.

  On the other hand, very high precision is required in the grinding of such a cylindrical member into parts. For example, processing accuracy that falls within an error of about several μm is required. In addition, the metal used as a member is often made of a metal or alloy having high hardness, and the load in grinding is high. The member to be processed is not only made of metal or alloy, but may be resin, ceramic, or other non-metallic material.

  Due to the high load in grinding, electric machining using laser or electric discharge machining is often used to grind metal or alloy members into parts of a specific shape. This is because, in the case of such electrical machining, unlike machining, a grinding tool (for example, a grindstone) is not required, so that there is a merit that the tool replacement is unnecessary.

  Alternatively, in the case of electromachining, there may be a merit that high-speed machining can be performed by laser or electric discharge machining.

  However, in the case of electromachining, the entire machining apparatus becomes large and complicated due to laser or electric discharge machining. For this reason, processing cost becomes high and processing cost will be reflected in components. Since the parts processed into the specific shape described above are used in various places of various devices, severe cost reduction is required. For this reason, this point cannot be satisfied by machining by electric machining.

  Of course, in the case of electromachining, a special tool such as a laser or an electric discharger is required, so that the machining apparatus itself is expensive, and it is difficult for a company that requires a large number of machining apparatuses. If a large number of processing devices cannot be introduced, the number of processing per part processing time decreases, which is a disadvantage in terms of work efficiency and processing cost.

  In such a situation, a part having a specific shape is manufactured by grinding by machining using a processing tool such as a grinding wheel. Also in such machining, it has been required to achieve high machining accuracy.

  In the case of machining, special tools such as laser and electric discharge machining are not required, and the overall complexity and size of the machining apparatus can be prevented. Moreover, since the cost of the processing tool itself that performs machining is low, the cost of the processing apparatus can be reduced. Since the number of introductions can be increased, there is a merit that the processing cost can be reduced and the component cost can be reduced in total. For this reason, there is a trend to replace parts manufacturing that has been conventionally performed by electrical machining with machining.

  On the other hand, in machining, in addition to ensuring machining accuracy, there is a need for maintenance work of a processing tool for setting or processing a processing object on the processing tool. In such a situation, a technique regarding a processing apparatus that manufactures a part having a special shape by machining has been proposed (for example, see Patent Documents 1 and 2).

JP 2010-194623 A JP 2009-208181 A

  Patent Document 1 discloses a support means for supporting a substantially cylindrical workpiece W having a thread groove NM formed so as to go around a part of a cylindrical surface so as to be rotatable around a work rotation axis CZ, and finish grinding the thread groove. A grindstone T, a lead direction moving means, and a cutting direction moving means, and a thread groove in the direction of the workpiece rotation axis CZ from a machining point Kp that is a contact point between the workpiece W and the grindstone T when grinding the thread groove NM. Non-contact displacement detection means S1 that outputs a detection signal corresponding to the distance to the object without contacting the object is provided at a position separated by a distance corresponding to the lead width Lp of the NM, in the direction of the workpiece W. A screw grinder is disclosed.

  Patent Document 1 discloses a technique for manufacturing a screw by forming a thread groove by processing an object to be processed using a processing tool by machining with a grindstone. That is, a machining apparatus by machining is disclosed.

  Here, patent document 1 aims at performing the position alignment with the grindstone which is a processing tool of the workpiece | work which is a process target object with high precision.

  However, Patent Document 1 considers only alignment (setting of a workpiece) with high accuracy, and there are few considerations for other problems. For example, confirmation of whether processing accuracy is ensured, automation of continuously processing a processing object, or automatic correspondence to different processing shapes are not considered.

  In addition, focusing on the positioning of the setting of the workpiece, it is necessary to perform the positioning of each workpiece, and there is a problem that it is difficult to realize continuous processing of a plurality of workpieces.

  Due to such problems, the processing time of a plurality of processing objects becomes long, and it is difficult to reduce the processing speed, processing efficiency, and processing cost.

  Patent Document 2 uses a dressing workpiece 16 in which dressing abrasive grains 56 are electrodeposited on a surface 16a of a workpiece 15 continuously processed by a grinding apparatus as a dressing grindstone. A workpiece with a defective conductor is plated on the surface of the workpiece, and then dressed abrasive grains are electrodeposited on the plating layer. Dressing abrasive grains 56 may be electrodeposited on the surface 16 a of the metal base 55 having the same shape as the work 15 to form the dressing work 16. Generally, the dressing abrasive grains are electrodeposited. However, depending on the material of the work, etc., the grinding grindstone in which the dressing abrasive grains 56 may be adhered to the surface 16a of the work 15 or the metal substrate 55 by a method other than electrodeposition. A dressing method is disclosed.

  That is, Patent Document 2 discloses a technique for realizing maintenance of a grindstone worn by grinding.

  However, Patent Document 2 is also the same as Patent Document 1, for example, confirming whether processing accuracy is ensured, automating the processing of a workpiece continuously, or automatically responding to different processing shapes. Not considered. Naturally, there is a problem that it is difficult to realize continuous processing of a plurality of processing objects, and it is difficult to reduce the processing cost.

  Moreover, although disclosing dressing a grindstone, the method for detecting the wear state of the grindstone is complicated, and there is a problem that the processing apparatus must be stopped to detect the wear state of the grindstone, There is a problem of lowering the operating rate of the processing apparatus.

  As described above, the conventional processing apparatuses represented by Patent Documents 1 and 2 have the following problems.

  (Problem 1) It is difficult to process a plurality of workpieces continuously and efficiently by batch processing.

  (Problem 2) In a plurality of processing objects, it is difficult to perform processing by continuous batch processing when different processing shapes are included.

  (Problem 3) It is difficult to determine the completion or reworking based on the machining accuracy of the machined part, and it is difficult to increase the yield rate.

  (Problem 4) It is difficult to grasp the wear of a grindstone as a processing tool without stopping the processing operation for a long time.

  (Problem 5) Due to problems 1 to 4, the total time for processing a plurality of objects to be processed becomes long, and it is difficult to reduce the processing cost and the part cost. In addition, it is difficult to balance the maintenance of processing accuracy while reducing the cost.

  In view of the above problems, an object of the present invention is to disclose an automatic grinding apparatus capable of processing a plurality of workpieces by continuous batch processing.

In order to solve the above problems, an automatic grinding apparatus of the present invention is an automatic grinding apparatus that continuously grinds a plurality of workpieces into a part having a predetermined shape,
A delivery unit for delivering a plurality of workpieces by unit;
A grinding unit that grinds a predetermined number of workpieces sent by the delivery unit to a predetermined shape;
A measuring unit for measuring the grinding accuracy of the workpiece ground by the grinding unit;
When the grinding accuracy is within the specified value at the measuring unit, it is discharged as a finished product that has been ground, and when the grinding accuracy is outside the specified value, the grinding unit performs grinding again as an incomplete product. And a sorting part to be returned to the grinding part,
The predetermined shape has a plurality of types.

  The automatic grinding apparatus of the present invention can manufacture a part having a specific shape by continuously processing a plurality of objects to be processed by batch processing.

  In this continuous processing, even in a state in which a plurality of workpieces include different machining shapes, it is possible to continuously manufacture parts with different machining shapes.

  Further, by automatically checking the processing accuracy of the parts to be manufactured and re-working if there is a defect, it is possible to reduce the response by stopping the processing device or manually. Further, by measuring the degree of wear such as a grindstone of the processing tool based on the processing accuracy, it is possible to reduce the stoppage of the processing apparatus during maintenance.

  Combined with the above, processing costs and component costs can be reduced.

It is a block diagram of the automatic grinding apparatus in Embodiment 1 of this invention. It is a schematic diagram of the processing target object in Embodiment 1 of this invention. It is a schematic diagram which shows the components manufactured with the automatic grinding apparatus in Embodiment 1 of this invention. It is a photograph which shows the example of the component 101 after processing the process target object 100 in Embodiment 1 of this invention. FIG. 5 is an enlarged photograph of one processed portion of FIG. 4. It is a side view of the grinding stage in Embodiment 1 of this invention. It is a block diagram of the automatic grinding apparatus in Embodiment 1 of this invention. It is the flowchart which detailed the work flow mentioned above of the automatic grinding apparatus 1 in Embodiment 1 of this invention. It is a block diagram of the automatic grinding apparatus in Embodiment 2 of this invention. It is a block diagram of the automatic grinding apparatus in Embodiment 2 of this invention. It is a block diagram of the automatic grinding apparatus in Embodiment 2 of this invention. It is an expansion schematic diagram of the grinding jig in Embodiment 2 of this invention.

The automatic grinding apparatus according to the first aspect of the present invention is an automatic grinding apparatus that continuously grinds a plurality of workpieces into a part having a predetermined shape,
A delivery unit for delivering a plurality of workpieces by unit;
A grinding unit that grinds a predetermined number of workpieces sent by the delivery unit to a predetermined shape;
A measuring unit for measuring the grinding accuracy of the workpiece ground by the grinding unit;
When the grinding accuracy is within the specified value at the measuring unit, it is discharged as a finished product that has been ground, and when the grinding accuracy is outside the specified value, the grinding unit performs grinding again as an incomplete product. And a sorting part to be returned to the grinding part,
The predetermined shape has a plurality of types.

  With this configuration, the automatic grinding apparatus can continuously grind a plurality of types or a plurality of workpieces in accordance with each machining shape. In addition, since the finished product can be classified after confirming the grinding accuracy after the grinding process, the yield can be increased in the automatic state.

  In addition to the first invention, the automatic grinding apparatus according to the second invention of the present invention further includes a storage unit for storing a machining program of a plurality of types of shapes, and the plurality of types of shapes are the first shape, The storage unit includes the second shape and the nth shape, and the storage unit selects a machining program having a shape corresponding to the workpiece to be sent to the grinding unit from a plurality of types of shapes, and outputs the machining program to the grinding unit.

  With this configuration, even when parts having different shapes have to be ground, they can be ground to a shape that should definitely be handled by a corresponding processing program.

  In the automatic grinding apparatus according to the third aspect of the present invention, in addition to the second aspect, the grinding accuracy measured by the measurement unit is included in the measurement program corresponding to the shape machining program.

  With this configuration, the measurement unit measures the grinding accuracy after grinding with a measurement program including grinding accuracy.

  In the automatic grinding apparatus according to the fourth aspect of the present invention, in addition to any one of the first to third aspects, the pre-measuring unit outputs the measured grinding accuracy.

  With this configuration, grinding accuracy is utilized in other subsequent elements.

  In the automatic grinding apparatus according to the fifth aspect of the present invention, in addition to any one of the first to fourth aspects, the distribution unit calculates and outputs the completion ratio of the distributed finished product and the unfinished product. To do.

  With this configuration, the distribution unit can calculate the yield based on the completion rate.

  In the automatic grinding apparatus according to the sixth invention of the present invention, in addition to any one of the first to fifth inventions, the grinding jig provided in the grinding part is deteriorated based on at least one of the grinding accuracy and the completion rate. And an inspection unit for inspecting the degree.

  With this configuration, it is possible to indirectly inspect the degree of deterioration of the grinding jig from the change in the grinding accuracy of the parts to be ground, avoiding the difficulty of directly inspecting the grinding jig itself. The inspection can solve the problem of the grinding jig and restore the grinding accuracy.

  In the automatic grinding apparatus according to the seventh invention of the present invention, in addition to any one of the first to sixth inventions, each of the plurality of workpieces is ground by the grinding section and finally finished as a finished product. A machining time measuring unit is further provided for measuring the total machining time until discharging.

  With this configuration, information such as an improvement of an automatic grinding apparatus, an improvement of a grinding process, or a cost prediction calculation is provided based on the processing time.

  In the automatic grinding apparatus according to the eighth aspect of the present invention, in addition to the seventh aspect, a plurality of processes are performed based on at least one of a machining program, a measurement program, a grinding accuracy, a completion rate, a deterioration degree, and a total machining time. A cost estimation unit for estimating each machining cost of the machining object is further provided.

  With this configuration, the automatic grinding apparatus can estimate the processing cost only by the grinding work.

  In the automatic grinding apparatus according to the ninth aspect of the present invention, in addition to the eighth aspect, the storage unit stores the grinding accuracy, the completion rate, the degree of deterioration, the total processing time, and the processing cost.

  With this configuration, the operator can read out information such as various measurement results stored in the storage unit as necessary.

  In the automatic grinding apparatus according to the tenth invention of the present invention, in addition to any of the first to ninth inventions, since the plurality of workpieces are sent out by the delivery unit, the plurality of workpieces are A supply unit for supplying is further provided.

  With this configuration, a large number of workpieces are supplied to the delivery unit one after another, and the grinding operation is continuously performed.

  In the automatic grinding apparatus according to the eleventh aspect of the present invention, in addition to any one of the first to tenth aspects, each of the plurality of workpieces has an identifier, and the storage unit includes a plurality of The correspondence between each of the workpieces to be sent and the identifier is stored.

  With this configuration, all the workpieces are managed with one identifier from supply to grinding and delivery. This management hardly causes problems in application of machining programs, measurement programs, and the like.

  In the automatic grinding apparatus according to the twelfth aspect of the present invention, in addition to the eleventh aspect, the processing program, grinding accuracy, completion rate, degree of deterioration, total processing time, and processing cost of the plurality of processing objects are as follows: The identifier is uniquely associated with each processing object.

  With this configuration, a process in which all the workpieces are associated with each other by the identifier is received.

  In the automatic grinding apparatus according to the thirteenth aspect of the present invention, in addition to any of the tenth to twelfth aspects of the present invention, a plurality of objects to be accommodated in the accommodating portion are processed by machining programs having different shapes. Objects are mixed.

  With this configuration, grinding into different shapes is performed on each of the plurality of workpieces in one batch process.

  In the automatic grinding apparatus according to the fourteenth aspect of the present invention, in addition to the thirteenth aspect, the storage section stores a machining program associated with an identifier in sending a plurality of workpieces to the grinding section. Output to the grinding section.

  With this configuration, the grinding unit surely grinds the required predetermined shape with a machining program corresponding to the grinding shape determined by the identifier.

  In the automatic grinding apparatus according to the fifteenth aspect of the present invention, in addition to any of the first to fourteenth aspects, the storage unit is associated with an identifier in the measurement by the measurement unit of a plurality of workpieces. The grinding accuracy standard that is the standard of the grinding accuracy is output to the measurement unit.

  With this configuration, the measurement unit can measure the grinding accuracy of the ground part based on a measurement program that matches the grinding accuracy standard determined by the identifier.

  In the automatic grinding apparatus according to the sixteenth invention of the present invention, in addition to any of the sixth to fifteenth inventions, the inspection unit includes a sending unit and a sending unit when the deterioration degree of the grinding jig is a predetermined value or more. Stop the grinding unit.

  With this configuration, in a state where the grinding ability in the grinding part is inferior, a part of the apparatus is stopped, and unnecessary work time or the like is not generated.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  (Embodiment 1)

  Embodiment 1 will be described.

  (Overview)

FIG. 1 is a block diagram of an automatic grinding apparatus according to Embodiment 1 of the present invention. FIG. 1 shows a schematic state of an automatic grinding apparatus actually manufactured.
The automatic grinding apparatus 1 continuously grinds a plurality of objects to be processed into parts having a predetermined shape. In particular, it is an apparatus that performs automatically in this grinding process. As shown in FIG. 1, the automatic grinding apparatus 1 includes necessary elements other than the grinding unit 5 that performs actual grinding. That is, the automatic grinding apparatus 1 includes a delivery unit 2, a supply unit 4, a grinding stage 3, a grinding unit 5, a measurement unit 6, and a sorting unit 7.

  The sending unit 2 sends a plurality of workpieces 100 to the grinding stage 3 by unit number. The grinding stage 3 includes a grinding unit 5 that performs actual grinding. The workpiece 100 sent out from the delivery unit 2 is ground into a part having a predetermined shape in the grinding unit 5.

  The measuring unit 6 measures the grinding accuracy of the ground workpiece 100 (which may be regarded as the part 101). When the grinding accuracy is within a predetermined value, the measuring unit 6 determines that the part 101 is a finished product that has been ground. Conversely, if the grinding accuracy is other than the predetermined value, the measuring unit 6 determines that the ground part 101 is an incomplete product.

  Based on the determination of the finished product and the unfinished product in the measurement unit 6, the sorting unit 7 discharges the finished product as a delivery. On the other hand, the sorting unit 7 returns the unfinished product to the grinding unit 5 in order to perform another grinding process for the unfinished product. As described above, the sorting unit 7 sorts the next stage of each of the finished product and the unfinished product based on the result of the measuring unit 6.

  In this way, the automatic grinding apparatus 1 can prevent the unfinished product from being shipped out of the finished product and shipped, and the component 101 with insufficient processing accuracy can be removed by grinding again. Finished product can be finished without waste. As a result, the yield is also improved, and the sorting work such as human work after the delivery can be omitted, so that the manufacturing cost of the component 101 can be reduced.

(Processing objects and parts)
Here, the workpiece to be processed by the automatic grinding apparatus 1 is a cylindrical member as shown in FIG. FIG. 2 is a schematic diagram of the object to be processed in Embodiment 1 of the present invention. The workpiece 100 is a member before being processed by the automatic grinding apparatus 1, and may be a member manufactured by a business operator who uses the automatic grinding apparatus 1. It may be a member manufactured and supplied.

  The workpiece 100 is made of metal, alloy, resin, ceramics, wood, or other non-metal.

  The automatic grinding apparatus 1 grinds the cylindrical workpiece 100 shown in FIG. 2 to produce a part 101 having a predetermined shape as shown in FIG. FIG. 3 is a schematic diagram showing parts manufactured by the automatic grinding apparatus according to Embodiment 1 of the present invention. The predetermined shape of the component 101 shown in FIG. 3 is an example, and a component 101 having a shape other than the predetermined shape is also manufactured.

  For example, the cylindrical workpiece 100 may be ground from the side surface in the same manner as the component 101 of FIG. 3 and may have a predetermined shape in which the diameter of a part of the cylindrical workpiece 100 is different. At this time, a plurality of types of parts 101 having a predetermined shape may be manufactured in which a part of the workpiece 100 has different diameters, different diameters, different diameters, and the like. .

  Alternatively, a part 101 having a predetermined shape may be manufactured by grinding the part other than the side surface of the cylindrical workpiece 100 so that the height is different or the upper surface or the bottom surface is processed such as unevenness. At this time, for example, processing of a predetermined shape in which a dent is formed on the upper surface or the bottom surface of the cylindrical processing object 100 is performed.

  FIG. 4 is a photograph showing an example of the part 101 after processing the workpiece 100 according to Embodiment 1 of the present invention. FIG. 5 is an enlarged photograph of one processed portion of FIG. 4 and 5, as shown in FIG. 3, are processed from the side surface of the cylindrical workpiece 100 and have a predetermined shape in which the diameter on the tip side of the workpiece 100 changes.

  The automatic grinding apparatus 1 according to the first embodiment manufactures a component 101 as shown in FIGS.

(Supply section)
The supply unit 4 supplies a plurality of workpieces 100 to the delivery unit 2 while storing them. For this reason, the supply unit 4 has a structure capable of stocking a plurality of workpieces 100. The supply unit 4 is in a state where a plurality of workpieces 100 can be received from outside for stock. In addition, a mechanism for moving the workpiece 100 is provided to supply the workpiece 100 being stocked to the delivery unit 2 in variously determined orders.

  Here, the supply unit 4 supplies a plurality of workpieces 100 while storing them, but the same type (for example, the cylindrical workpiece 100 has the same diameter, height, material, etc.). The object 100 may be supplied while being stored. Alternatively, a plurality of different types (for example, different diameters, heights, materials, and the like of the cylindrical workpiece 100) may be supplied while being stored.

  Further, as shown in FIG. 1, the supply unit 4 is also appropriately provided with a plurality of lanes 41 in order to increase the stock amount or to cope with a plurality of types. In each of the lanes 41, the workpieces 100 are arranged in one or a plurality of rows, and a mechanism for moving the workpieces 100 may be supplied to the sending unit 2 at variously defined time intervals. Good.

  Here, the same type of workpiece 100 may be arranged in all of the plurality of lanes 41, or different types of workpiece 100 may be arranged for each of the plurality of lanes 41.

  The supply unit 4 is intended to increase the efficiency and speed up of the supply of the workpiece 100 to the delivery unit 2 of the automatic grinding apparatus 1. For this reason, the workpiece 100 can be supplied to the delivery unit 2 by manual work or other methods, and if that is sufficient, the supply unit 4 may not be provided. In this case, the entrance portion of the delivery unit 2 also functions as the supply unit 4.

(Sending part)
The delivery unit 2 sends the workpiece 100 that is the supply unit 4 or is supplied by another method to the grinding stage 3 including the grinding unit 5. Here, the sending unit 2 sends out the plurality of workpieces 100 by a unit number at a time interval that matches the grinding time in the grinding unit 5 and the number that can be ground.

  For example, when the grinding unit 5 can grind one workpiece 100 at a time and the grinding time is 1 minute, the sending unit 2 is connected to the grinding stage 3 one by one. Are sent out at intervals of 1 second (margin time may be taken). Alternatively, when the grinding unit 5 can grind the two workpieces 100 at a time and the grinding time is 1 minute each, the sending unit 2 sends two workpieces to the grinding stage 3. 100 is sent out at 1 second intervals. The time interval may be changed depending on the workpiece 100.

  The automatic grinding apparatus 1 is intended to batch process a large number of workpieces 100 continuously. For this reason, the sending unit 2 sends a large number of workpieces 100 to the grinding stage 3 one after another. At this time, in continuous batch processing, naturally, grinding processing and the ability of measurement and delivery described later are also required.

  As a premise thereof, the sending unit 2 needs to send a large number of workpieces 100 to the grinding stage 3 one after another. At this time, it is also important to send out a large number of workpieces 100 of the same type one after another. Alternatively, it is also important to send out a plurality of types of workpieces 100 one after another.

  For this reason, as an example, 1000 processing objects 100 of the same type may be sent out by the sending unit 2 in one batch processing of the automatic grinding processing apparatus 1. As another example, 100 processing objects 100 that are the first type are first sent out by the sending unit 2, and then 200 processing objects 100 that are the second type are sent out by the sending unit 2, Furthermore, 100 processing objects 100 that are the third type may be sent out by the sending unit 2.

  As described above, the sending unit 2 sends the workpieces 100 required for one batch process in various orders, numbers, and time intervals in accordance with instructions from the control unit 8 that controls the entire automatic grinding apparatus 1. And sent to the grinding stage 3. The workpiece 100 is put into the grinding stage 3 in an appropriate order and timing by sending out the batch unit 3 in response to various batch processing instructions from the sending unit 2.

  The automatic grinding apparatus 1 according to the first embodiment can realize grinding batch processing required by the control unit 8 by sending the workpiece 100 of the sending unit 2 in accordance with an instruction from the control unit 8.

  In addition, when the idle time of the grinding stage 3 changes due to re-execution of grinding based on the measurement result in the measurement unit 6 to be described later, the sending unit 2 sets the sending timing in accordance with the change in the idle time. Change. The change in timing may be grasped by the control unit 8 receiving information from the measurement unit 6 or the distribution unit 7, and the control unit 8 may instruct the sending unit 2 to change the timing.

(Grinding stage)
The grinding stage 3 is a structure such as a pedestal provided with a grinding unit 5 that performs an actual grinding process on the workpiece 100. Depending on the structure and characteristics of the grinding part 5 that performs grinding, it may be a pedestal or have another structure.

  FIG. 6 is a side view of the grinding stage in the first embodiment of the present invention. FIG. 6 schematically shows an example of the grinding stage 3. In FIG. 6, the grinding stage 3 has a pedestal structure. This pedestal has the same height as the sending unit 2 (or a height at which the processing target 100 can be received) as the processing target 100 is fed by the sending unit 2. Although not shown in FIG. 6, there are lanes and gripping mechanisms on the pedestal, and these place the workpiece 100 that has reached the grinding stage 3 from the delivery unit 2 on the installation base 31.

  The installation table 31 is provided at a position corresponding to the grinding unit 3 and fixes the workpiece 100 for grinding. For example, a recess may be provided in the installation table 31 and the workpiece 100 may be inserted into the recess. Or the holding | suppressing part which hold | suppresses the downward direction of the workpiece 100 from the side from the side may be provided.

  When the grinding unit 3 can grind one workpiece 100 at a time, the installation table 31 installs one workpiece 100. When the grinding unit 3 can grind two or more workpieces 100 at a time, the installation table 31 installs two or more workpieces 100.

  It is also preferable that the installation base 31 can change the relative position with respect to the grinding part 3 so that the workpiece 100 can correspond to the grinding part 3 accurately. Further, in the case of the processed part 101 as shown in FIG. 4 or the like, the side surface of the workpiece 100 is ground with the grindstone 51 or the like. In this case, the grinding unit 5 including the grindstone 51 may change the position with respect to the workpiece 100, and the installation base 31 that fixes the workpiece 100 changes the position with respect to the grinding unit 5. May be.

  In this way, the installation base 31 not only fixes the workpiece 100 but also realizes the construction of a relative positional relationship between the workpiece 100 and the grinding portion 5 that is necessary for grinding in the grinding portion 5. .

(Grinding part)
The grinding part 5 grinds the workpiece 100 that is installed and fixed on the installation table 31 so as to be a part having a predetermined shape. That is, the grinding unit 5 is an element that plays a central role in the grinding process of the automatic grinding apparatus 1.

  As shown in FIG. 6, the grinding unit 5 includes a grindstone 51 that cuts the outer periphery, the upper surface, and the like of a workpiece 100 made of a material such as metal, alloy, resin, ceramics, nonmetal, and wood. In FIG. 6, the grindstone 51 has a shape with a sharp tip, but may have a flat plate shape or a rod shape.

  Depending on the shape of the grindstone 51, the shape that the grinding part 5 can grind can be changed. For this reason, when it is necessary to process a certain type of predetermined shape on a certain type of workpiece 100, the grinding unit 51 is used with the same grindstone 51 as when the shape of the grindstone 51 is changed according to the predetermined shape It is possible that the operation of 5 is changed. In the latter case, it can be realized by changing the rotation operation, lifting operation, rotation speed, rotation speed, and the like of the grinding unit 5.

  The operation of the grinding unit 5 may change during the grinding of one workpiece 100 or may not change during the grinding of one workpiece 100. This may also be realized by controlling the grinding unit 5 by the control unit 8.

  In the former case, the grinding unit 5 may be realized by replacing the grindstone 51. A plurality of types of grindstones 51 having different shapes are prepared in advance, and the grindstone 51 is replaced and used according to a predetermined shape required for grinding.

  Thus, the grinding part 5 can grind the workpiece 100 into different types of predetermined shapes by the operation of the grinding part 5 in the grinding process, the shape of the grindstone 51, and the like. As described in the sending unit 2, a certain type of processing object 100 is installed on the installation table 31 by the sending unit 2. At this time, the grinding unit 5 performs grinding into a predetermined shape by the operation processed by the software program according to the predetermined shape instructed by the control unit 8 by the workpiece 100 that is installed.

  FIG. 7 is a block diagram of the automatic grinding apparatus according to Embodiment 1 of the present invention.

  The automatic grinding apparatus 1 shown in FIG. 7 further includes a storage unit 9 that can be read and written by the control unit 8. The memory | storage part 9 memorize | stores the processing profile matched with the predetermined shape of several types. The plural types of predetermined shapes include a first shape, a second shape, a third shape,..., An nth shape. The storage unit 9 stores machining programs corresponding to the plurality of predetermined shapes, and outputs them to the control unit 8 in a readable manner in accordance with instructions from the control unit 8.

  Here, an identifier is attached to each of the plurality of workpieces 100 sent out by the sending unit 2 and reaching the grinding stage 3 (may be a physical identifier, It may be a non-physical identifier that indicates the relative order such as the order in batch processing). The storage unit 9 stores each identifier of the processing object 100. In addition, a machining program corresponding to the identifier is stored.

  This can be realized by causing the storage unit to store the association between the identifier and the machining program before the batch process is started. For example, in a certain batch process, the first 100 workpieces 100 are subjected to grinding of the first shape, and the next 200 workpieces 100 are subjected to grinding of the second shape. Further, it is assumed that the next 100 workpieces 100 are subjected to third shape grinding.

  The user stores this content in the storage unit 9.

  The storage unit 9 reads the machining program corresponding to the first shape, the second shape, the third shape, etc. designated for each of the workpieces 100 sent to the grinding unit 5 according to the stored contents. It's out. The read machining program is output to the control unit 8. Based on the read processing program, the control unit 8 instructs the grinding unit 5 on the processing content.

  The grinding unit 5 performs a grinding process such as a predetermined first shape on the workpiece 100 installed on the installation table 31 based on the machining program instructed by the control unit 8.

  In this way, each of the plurality of workpieces 100 sent to the grinding stage 3 is identified by an identifier, so that the workpiece 100 that needs to be processed into different predetermined shapes in continuous batch processing. Even in the case where both are mixed, the grinding unit 5 can definitely perform grinding to a corresponding shape. In addition, by grasping with this identifier, the measurement accuracy in the measurement unit 6 to be described later can be accurately corresponding to a predetermined shape required in the grinding process.

    (Measurement part)

  The measuring unit 6 measures the grinding accuracy of the part 101 manufactured by grinding by the grinding unit 5. The part 101 shown in FIGS. 4 and 5 is required to have very fine accuracy including the diameter, length, curve, etc. of the shape obtained by grinding. In some cases, accuracy in units of μm is required.

  For example, the part 101 shown in FIGS. 4 and 5 is ground so that the tip is sharpened, or is ground so that the tip is sharpened with a curved surface, or the diameter changes stepwise. It is ground. The part 101 having this ground shape is used as various tools or various structural parts used in equipment.

  The part 101 used as such a tool or a structural part needs to have various fine size elements for the purpose of use. In each of these sizing elements, the accuracy of the part 101 manufactured by grinding is very important. For example, even when a ground portion having a diameter is only several μm larger than a required size, it may be difficult to use as a tool or a structural part. If the parts 101 that do not have such required accuracy are delivered after the grinding unit 5, a large number of parts 101 are shipped in a state where defective products are mixed. In such a shipping state, inconvenience occurs for the customer who uses the component 101.

  On the other hand, when checking the accuracy of a large number of delivered parts 101 by human work or the like before shipment, the cost and time for human work increase. These costs and time affect the selling price of the component 101, making it difficult to provide the component 101 at a low cost. In addition, there is a possibility that the part 101 detected as a defective product by human work may be discarded, which may cause a reduction in the yield rate as well as a decrease in the yield, and also increase the unit price of the part 101.

  The automatic grinding apparatus 1 according to the first embodiment includes a measurement unit 6 that measures the grinding accuracy of the part 101 that has been ground by the grinding unit 5 and determines a finished product or an incomplete product. When the automatic grinding apparatus 1 is delivered by the measuring unit 6, since it is measured and determined to be an incomplete product, it is ground again by the grinding unit 5. Most of the large number of workpieces 100 sent to the section 5 are finally delivered as parts 101 as finished products. As a result, no extra human work is required and the yield can be increased. As a result, the unit cost of the component 101 can be reduced.

  Here, in the measurement unit 6, the part to be measured, the reference to be measured, and the points to be noted in the measurement are different depending on the machining program applied to the workpiece 100 by the grinding unit 5. For example, in the machining program corresponding to the first shape, the diameter of a certain part is 1 mm and the allowable error is 5 μm. Alternatively, in the machining program corresponding to the second shape, the cross section of a certain part is a square, and the allowable error of R at the corner is 10 μm.

  As described above, the part, the reference, and the like to be measured by the measurement unit 6 naturally differ depending on the machining program applied to the workpiece 100.

  Therefore, the control unit 8 processes the workpiece 100 in accordance with instructing the grinding unit 5 that grinds the workpiece 100 to the machining program corresponding to the first shape, the second shape,. The same machining program is instructed to the measurement unit 6 that measures the accuracy later. The measurement unit 6 that has received an instruction of the machining program measures the accuracy of the processed part 101 based on the part, reference, and points to be noted corresponding to the machining program.

  Here, the measurement unit 6 may receive information on the machining program from the control unit 8 and measure the grinding accuracy of the machined part 101 based on the measurement program corresponding to the information. Alternatively, the control unit 8 may read out a measurement program corresponding to each machining program from the storage unit 9 and output the measurement program itself to the measurement unit 6 to instruct the measurement program.

  In both the former case and the latter case, the measurement unit 6 can measure the grinding accuracy with a measurement program corresponding to the machining program, and can realize measurement according to the grinding content applied to the workpiece 100.

  The measurement unit 6 outputs the measured grinding accuracy to at least one of the control unit 8 and the distribution unit 7. Note that each of the ground parts 101 still has the same identifier as that assigned to each of the workpieces 100 fed by the delivery unit 2.

(Sorting part)
The distribution unit 7 receives the result of the grinding accuracy from the control unit 8 or the measurement unit 6. At this time, each of the grinding accuracy results of the ground part 101 is stored in the storage unit 9 so as to correspond to the identifier assigned to each of the workpieces 100.

  The sorting unit 7 compares the grinding accuracy with the reference value specified by the measurement program, and determines whether the part 101 obtained by grinding by the grinding unit 5 is a finished product or an incomplete product. For example, if the grinding accuracy is within a predetermined value, it is determined that the product is a finished product. Conversely, if the grinding accuracy is outside the predetermined value, it is determined that the product is an incomplete product.

  Here, the measurement unit 6 may output a measurement result, which is a result of measuring up to the grinding accuracy, to the distribution unit 7, and the distribution unit 7 may perform an operation of distinguishing the finished product from the unfinished product. Or the measurement part 6 may implement even the operation | work of the distinction with a finished product and an incomplete product based on the result of grinding precision. In the latter case, the distribution unit 7 mainly distributes the finished product and the unfinished product to subsequent processing steps.

  The sorting unit 7 issues the part 101 determined as a finished product regardless of the former or the latter. If the part 101 determined as an incomplete product remains installed on the installation table 31 corresponding to the grinding unit 5, the grinding of the incomplete product part 101 in the grinding unit 5 is performed through the control unit 8. Continue processing. Alternatively, when the component 101 determined as an incomplete product has been removed from the installation table 31, it is returned to the installation table 31. After returning to the installation table 31, the sorting unit 7 continues the grinding process by the grinding unit 5 of the part 101 determined as the incomplete product through the control unit 8.

  In this way, the finished product is delivered as it is and ready for shipment. Incomplete products can be ground again, leading to finished products.

  Since the unfinished product is ground again by the grinding unit 5, the measurement by the measuring unit 6 is again performed thereafter. Based on the grinding accuracy by this measurement, it is judged again whether it is a finished product or an incomplete product. If it is a completed product, the sorting unit 7 issues the part 101, and if it is an unfinished product, returns it to the grinding process in the grinding unit 5 again.

  In this way, the workpiece 100 is ground only by the grinding stage 3 until most of the workpiece 100 is a finished product. As a result, most are delivered as finished products.

  In addition, the measuring unit 6 leaves the part 101 whose grinding accuracy is out of the standard because it has been cut too much by grinding, assuming that there is no meaning of re-grinding, as an unfinished product. Since this is also issued in association with the identifier, even if it is issued, it is not sent to shipment. That is, this incomplete product is an excluded product.

  In this way, identifiers are associated with all the workpieces 100 and the parts 101 obtained by processing them from the sending unit 2 to the shipping state. Based on the association by this identifier, it is clear for each of the parts 101 that the product is classified into a finished product, an incomplete product, and an excluded product. This result is stored in the storage unit 9, and the operator can grasp this result after the fact.

  At this time, since the workpiece 100 associated with the identifier and the machined part 101 are measured and distributed, the judgment on the finished product in grinding, judgment on the incomplete product, Each of the parts 101 that receives grinding processing, re-measurement, determination of an excluded product, and the like is associated with an identifier assigned at the stage of the workpiece 100. By this association, the operator can grasp which part 101 corresponding to which identifier is finally a finished product or another. Of course, the control unit 8 can also distinguish the finished product and other final results in association with this identifier and store them in the storage unit 9.

  The memory of the storage unit 9 allows the operator to grasp the final result and the progress that have been organized by outputting or displaying the result.

  FIG. 8 is a flowchart detailing the above-described work flow of the automatic grinding apparatus 1 according to Embodiment 1 of the present invention. The process flow and the overall flow of each of the above-described elements can be realized by taking a flowchart as shown in FIG. 8 as an example.

  As described above, the automatic grinding apparatus in Embodiment 1 can increase the yield and reduce the manufacturing cost. In addition, all the determination results such as the processing object 100, the processing program in the grinding unit 5, the part 101, the measurement program, and the final finished product are associated with each other by the identifier. As a result, even if different types of workpieces 100 are mixed or different grinding shapes are mixed, many workpieces 100 can be processed by a single batch process. Even if the batch processing is performed once, there is no problem that the worker or the automatic grinding apparatus 1 mixes the completed parts 101 with each other.

  (Embodiment 2)

  Next, a second embodiment will be described. In the second embodiment, an additional process of each element described in the first embodiment and further ideas by other elements will be described.

(Calculation at the distribution part)
As described above, the sorting unit 7 distinguishes the part 101 ground by the grinding unit 5 into a finished product or an incomplete product (excluded product in some cases). For this reason, the distribution part 7 can calculate the ratio of the finished product and the unfinished product in the batch processing with a certain quantity of the workpiece 100 to be ground. For example, it is possible to calculate and output the ratio of the finished product in the whole as 99%.

  The output result may be stored in the storage unit 9 or displayed on a display unit or the like so that the operator can grasp it.

  This ratio indicates the yield, and can be used as an index for measuring the working ability of the automatic grinding apparatus 1 and the processing accuracy of the grinding unit 5.

(Processing time measurement unit)
Grinding is performed after a plurality of workpieces 100 are sent to the grinding stage 3 by the delivery unit 2. As described in the first embodiment, the grinding unit 5 performs grinding, and then the product is delivered as a finished product based on the measurement result of the measurement unit 6.

  FIG. 9 is a block diagram of an automatic grinding apparatus according to Embodiment 2 of the present invention. The automatic grinding apparatus 1 shown in FIG. 9 further includes a processing time measuring unit 11.

  The machining time measuring unit 11 is a timing at which the workpiece 100 is supplied from the supply unit 4 to the delivery unit 2, a timing at which the delivery of the workpiece 100 is started by the delivery unit 2, or grinding from the delivery unit 2. Either the timing at which the workpiece 100 is sent to the stage 3 or the timing at which the workpiece 100 is installed on the installation base 31 (or any other or each). As a reference, the total processing time until delivery as a finished product (processing in the grinding unit 5, re-grinding when judged as an incomplete product, or measurement time by the measuring unit 6, etc. as time elements) Calculated).

  The machining time measuring unit 11 calculates the total machining time and outputs it to the storage unit 9. Or it displays on a display part. The total machining time here is the total machining time of the workpiece 100 specified by the identifier. That is, the total machining time of each machining object 100 is calculated for each of the plurality of machining objects 100.

  By this total processing time, the operator can examine the operation capability and the improvement point of the automatic grinding apparatus 1. Or manufacturing cost can also be examined.

  In addition, as described above, a plurality of types can be selected as the timing that is the start reference (or end reference) of the total machining time calculated by the machining time measuring unit 11. The machining time measuring unit 11 calculates the total machining time for each of the combinations of the plurality of start and end criteria.

  From each of the total machining time based on the combination of the different start criteria and finish criteria, the operator can examine the operation capability and improvement points of each element of the automatic grinding machine 1. Alternatively, cost calculation for each element can be examined in more detail.

(Cost estimation part)
FIG. 10 is a block diagram of an automatic grinding apparatus according to Embodiment 2 of the present invention. The automatic grinding apparatus 1 shown in FIG. 10 includes a cost estimation unit 12.

  The cost estimation unit 12 estimates each processing cost of the plurality of processing objects 100 based on at least one of a processing program, a measurement program, a completion rate, a degree of deterioration described later, and a total processing time.

  The processing cost estimation result is stored in the storage unit 9 or displayed on the display unit. By this storage and display, the operator can grasp the result of estimating the machining cost of the workpiece 100 to the final part 101. Based on the estimated machining cost, the operator can study improvement of the automatic grinding apparatus 1 and improvement of the machining program and measurement program stored in the storage unit 9 in batch processing.

  Further, in the batch processing, the number of workpieces 100, the number of types, the number of types, the number of types and the like that are optimal for input in one batch processing can be studied and implemented.

  Alternatively, it can be used as a reference when determining the unit price of the manufactured part 101 based on the estimated processing cost.

  Since the cost estimation unit 12 estimates the machining cost based on the actual operation of the automatic grinding apparatus 1, it shows a state closer to the actual cost. For this reason, it can be set as appropriate reference information when the manufacturer determines the unit price.

(Inspection unit)
FIG. 11 is a block diagram of an automatic grinding apparatus according to Embodiment 2 of the present invention. The automatic grinding apparatus 1 shown in FIG. 11 further includes an inspection unit 13 that inspects the degree of deterioration of the grinding jig included in the grinding unit 5. Here, the grinding jig 51 shown in FIG. 6 is an example of the grinding jig.

  The inspection unit 13 inspects the degree of deterioration of the grinding jig based on at least one of the grinding accuracy and the completion rate. If the grinding jig is the grindstone 51, the inspection unit 13 inspects the degree of deterioration of the grindstone 51.

  If the grindstone 51 is deteriorated, the grinding unit 5 cannot perform grinding to the required accuracy no matter how the grinding is performed. In addition, the ratio of the unfinished product after the measurement by the measuring unit 6 increases, and the state in which the unfinished product cannot be upgraded to the finished product by the grinding process again continues. In such a state, regardless of the capability of the automatic grinding apparatus 1 as a whole, the yield in manufacturing the workpiece 100 to the component 101 does not increase.

  For this reason, if the degree of deterioration of the grindstone 51 becomes a predetermined level or higher, maintenance such as replacement of the grindstone 51 and polishing of the grindstone 51 is required. The inspection unit 13 does not directly observe the grindstone 51 itself, but indirectly inspects the degree of deterioration based on at least one of the measurement program and the completion rate. In particular, a reduction in the completion rate is a state where the grinding accuracy sufficient for classification as a finished product is not achieved. In this state, there are many problems with the grindstone 51 as compared with the machining program that manages the work in the grinding unit 5.

  Based on this point, the inspection unit 13 can inspect the degree of deterioration based on the completion rate. Alternatively, the degree of deterioration of the grindstone 51 can be inspected based on the grinding accuracy (result measured by the measuring unit 6), which is information on the previous stage of the completion rate. In the inspection of the degree of deterioration, the inspection unit 13 may use a reference value based on the grinding accuracy or the completion rate. At this time, the reference value to be used may be in a plurality of stages, and it is also appropriate that the inspection unit 13 represents the degree of deterioration of the grindstone 51 in a stepwise level in accordance with the reference in the plurality of stages.

  This is because when the operator knows the degree of deterioration at this stepwise level, it is possible to make stepwise judgments such as maintenance and replacement of the grindstone 51 and repair of the entire grinding unit 5.

  FIG. 12 is an enlarged schematic view of a grinding jig in the second embodiment of the present invention. The grinding part 5 includes a grinding jig as shown in FIG. As FIG. 12 shows, the abrasive grain which performs actual grinding is attached to the outer periphery of a grindstone. This abrasive grain cuts the outer periphery of the workpiece 100 by the rotation of the grindstone. In the grinding process which cuts and processes in this way, a part of this abrasive grain is peeled off or the angle is distorted. In this case, as described above, maintenance is performed by replacing each grindstone or reattaching the abrasive grains.

  The inspection unit 13 outputs the degree of deterioration that is the inspection result to the storage unit 9. The storage unit 9 stores the degree of deterioration or displays it through the display unit. Thereby, the worker can grasp the degree of deterioration.

  In other words, the storage unit 9 is not only a program necessary for machining and measurement such as a machining program and a measurement program, but also a result of factors relating to measurement and estimation, grinding accuracy, completion rate, deterioration degree, total machining Time and processing costs are also stored. Also in this storage, each processing object 100 associated by the identifier is stored. Thereby, the operator can grasp | ascertain various processing results in the automatic grinding apparatus 1 by taking out the information from the memory | storage part 9 by the ex-post timing of an operation | work.

  Of course, the processing program and the measurement program associated with the identifier are also stored in the storage unit 9, and errors in the grinding operation in the grinding unit 5 and the measurement operation in the measurement unit 6 can be prevented.

(Automatic grinding machine stopped)
It is also preferable that the inspection unit 13 stops the operations of the sending unit 2 and the grinding unit 5 when the deterioration degree of the grinding jig such as the grindstone 51 of the grinding unit 5 is equal to or greater than a predetermined value. In a state where the degree of degradation has progressed to a certain extent, performing grinding as it is adversely affects cost and work time.

  In addition, problems such as further deterioration of the grinding part 5 occur. For this reason, the inspection unit 13 stops the operation of the sending unit 2 and the like in order to stop the grinding process when the degree of deterioration becomes a predetermined value or more.

  As described above, the automatic grinding apparatus 1 according to Embodiment 2 can provide guidelines for studying and improving cost reduction and time reduction by various devices. Further, it is possible to prevent in advance a situation that may cause a problem in the grinding process.

  As described above, the automatic grinding apparatus described in the first and second embodiments is an example for explaining the gist of the present invention, and includes modifications and alterations without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Automatic grinding processing apparatus 2 Sending part 3 Grinding stage 4 Supply part 5 Grinding part 51 Grinding wheel 6 Measuring part 7 Distribution part 8 Control part 9 Storage part 11 Processing time measurement part 12 Cost estimation part 13 Inspection part

Claims (16)

An automatic grinding apparatus that continuously grinds a plurality of workpieces into a part having a predetermined shape,
A delivery section for delivering the plurality of workpieces by unit number;
A grinding unit that performs grinding to a predetermined shape on the processing target of the unit number sent by the sending unit;
A measuring unit for measuring the grinding accuracy of the workpiece to be ground by the grinding unit;
When the grinding accuracy is within a predetermined value at the measuring unit, the product is discharged as a finished product that has been ground, and when the grinding accuracy is outside the predetermined value, the grinding unit re- A sorting unit that returns to the grinding unit to perform grinding, and
The said predetermined shape is an automatic grinding apparatus which has multiple types of form. A storage unit for storing machining programs of the plurality of types of shapes;
The plurality of types of shapes include a first shape, a second shape, and an nth shape,
2. The automatic grinding process according to claim 1, wherein the storage unit selects a machining program having a shape corresponding to the workpiece to be sent to the grinding unit from the plurality of types of shapes and outputs the selected processing program to the grinding unit. apparatus.   The automatic grinding apparatus according to claim 2, wherein the grinding accuracy measured by the measuring unit is included in the measurement program corresponding to the shape processing program.   The automatic grinding apparatus according to any one of claims 1 to 3, wherein the front measurement unit outputs the measured grinding accuracy.   5. The automatic grinding apparatus according to claim 1, wherein the distribution unit calculates and outputs a completion ratio of the distributed finished product and the unfinished product.   The automatic grinding apparatus according to claim 1, further comprising: an inspection unit that inspects a degree of deterioration of a grinding jig included in the grinding unit based on at least one of the grinding accuracy and the completion rate. .   The processing time measuring unit according to claim 1, further comprising a processing time measuring unit that measures a total processing time until each of the plurality of processing objects is ground by the grinding unit and finally discharged as the finished product. Any of the automatic grinding machines described.   A cost estimation unit configured to estimate a machining cost of each of the plurality of workpieces based on at least one of the machining program, the measurement program, the grinding accuracy, the completion rate, the degree of deterioration, and the total machining time. The automatic grinding apparatus according to claim 7, further comprising:   The automatic grinding apparatus according to claim 8, wherein the storage unit stores the grinding accuracy, the completion rate, the deterioration degree, the total machining time, and the machining cost.   The automatic grinding apparatus according to any one of claims 1 to 9, further comprising a supply unit that supplies the plurality of workpieces so that the plurality of workpieces are sent out by the delivery unit.   11. The automatic grinding according to claim 10, wherein each of the plurality of workpieces has an identifier, and the storage unit stores correspondence between each of the plurality of workpieces to be sent and the identifier. Processing equipment.   The machining program, the grinding accuracy, the completion rate, the deterioration degree, the total machining time, and the machining cost of each of the plurality of machining objects are uniquely associated with each of the machining objects by the identifier. The automatic grinding apparatus according to claim 11, wherein   The automatic grinding apparatus according to any one of claims 10 to 12, wherein in the plurality of workpieces accommodated in the accommodating portion, workpieces with machining programs having different shapes are mixed.   14. The automatic grinding apparatus according to claim 13, wherein the storage unit outputs the machining program associated with the identifier to the grinding unit when sending the plurality of workpieces to the grinding unit.   The storage unit outputs, to the measurement unit, a grinding accuracy reference serving as a reference for the grinding accuracy associated with the identifier in the measurement of the plurality of workpieces by the measurement unit. 14. The automatic grinding apparatus according to any one of 14.   The automatic grinding apparatus according to any one of claims 6 to 15, wherein the inspection unit stops the operations of the sending unit and the grinding unit when the deterioration degree of the grinding jig is equal to or greater than a predetermined value.