JPH06210540A - Long work machining system - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] In a processing machine of the type that can fix a long work piece on a fixed base and perform multiple machining operations at the same time, multiple different machining operations for a single workpiece can be performed It enables efficient simultaneous machining using machining programs. [Structure] When the previous machining of a certain tool post is completed, the controller 5 issues a movement command to the next machining position. At this time, it is judged whether or not the next machining position deviates from the machining area of the turret 3, and if it deviates, the turret 3
Is stopped, and all the operation data of various devices related to the machining according to the machining program thereafter are treated as temporary data. After that, each time the program progresses, a false signal of machining end is sent from the turret 3 before the operation and the actual machining is not performed, but only the information processing on the machining program is performed.
When the movement command is moved into the execution area, the temporary processing is moved to the actual processing, and thereafter, predetermined machining is executed according to the machining program.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing machine suitable for efficiently processing a long work such as an aluminum sash. More specifically, it is provided with two or more tool rests, and each tool rest has a working area. The present invention relates to a machining system in which a plurality of machining operations are simultaneously performed on a single work according to the same program.

[0002]

2. Description of the Related Art Conventionally, a machine tool or a long work machine equipped with a plurality of turrets for efficiently performing cutting or the like on various kinds of works and capable of simultaneously processing a single work or a plurality of works. It has been known. Examples of such machine tools include, for example, Japanese Patent Laid-Open Nos. 2-30401 and 2-3.
There is a two-spindle facing type CNC lathe disclosed in Japanese Patent No. 0401, and an example of a long work machining machine is a multi-column automatic machining machine disclosed in Japanese Patent Laid-Open No. 4-193440.

Among the above-mentioned processing machines, a two-spindle facing type CNC lathe has two turret type tool rests on a common base and two main spindles each having a spindle for holding and rotating a work. The heads are arranged opposite to each other and provided with two sets of machining units, one headstock is fixed on the base, and the other headstock can be positioned only in the spindle direction.
Of the two turret type tool rests, the tool rest corresponding to the one fixed headstock is capable of control movement in a direction parallel to the spindle and in a direction orthogonal to the spindle, respectively, and to the other fixed headstock. The corresponding tool rest can be controlled and moved only in the direction orthogonal to the main axis.

According to this two-spindle-opposing CNC lathe, separate workpieces are held on the respective spindles, and each workpiece is machined independently by the tool of the corresponding tool post while rotating the spindle. . Then, the machining of the work by the lathe is performed by first performing a predetermined machining on the single work according to the machining program of the first machining unit, and then delivering the work to the second machining unit, and according to the machining program of the unit. Set the processing method to complete the remaining processing and the same processing program for both,
It is possible to adopt a processing method in which two workpieces are processed at the same time.

On the other hand, in the multi-column automatic processing machine, a long work is horizontally supported by a plurality of clamps arranged in parallel on a fixed base, and a plurality of index tables having a plurality of tool heads are provided. A column is installed so that it can be positioned and moved parallel to the work. Further, each of the clamps is also capable of positioning and moving in the longitudinal direction of the work, and the index table is composed of a rotating disk, on which a large number of tool heads are radially mounted.

According to this multi-column automatic processing machine, a long work is fixedly supported horizontally on a fixed base through a clamp and simultaneously processed by a plurality of tools at a plurality of positions in the longitudinal direction of the work. Because it is possible to select any tool from among multiple tools by indexing and rotating the Iddex table, and to direct a specific tool to the work from any direction. It is possible to perform desired processing on the entire surface of the work.

[0007]

By the way, in the case of the above-mentioned two-spindle-opposing CNC lathe, since the work cantilevered by the chuck of the main spindle is rotated together with the main spindle to perform turning, the work position is the main spindle. It is determined by the positioning of. At this time, the positioning operation and all operations related to various types of turning are performed by commands from the control device based on various data of the work and the machining program, and all the control operations are performed by numerical control.

However, in the above-described two-spindle-opposing CNC lathe, each spindle holds a separate work as described above, and simultaneous machining is performed by a separate tool rest that operates in association with each spindle. Therefore, when the same machining is performed on both workpieces, there is no inconvenience in using the same machining program, and it is not necessary to keep in mind that problems such as interference between turrets occur. It is a thing.

On the other hand, according to the above-described multi-column automatic processing machine for processing a long work, the work is fixed at a fixed position on the fixed base, and the desired work is performed by moving the column and operating the tool head. However, this type of long work is not limited to the aluminum sash, but this type of long work has various dimensions, and it is almost always required to process the entire lengthwise work.

According to the publication, although it was developed in consideration of simultaneously performing a plurality of machining on a single work by operating a plurality of tool heads,
The processing procedure and the like are not specifically disclosed. Then, when performing simultaneous machining with a plurality of columns for a single fixed work, it is of course possible to avoid interference between adjacent columns, and the most important point in adopting this method is It is not only to operate a plurality of columns at the same time, but also to improve the overall productivity such as the operating efficiency of the entire apparatus, the cost of creating a machining program, and the ease of production.

An object of the present invention is, in a processing machine of a type capable of simultaneously performing a plurality of processings by fixing a long work to a part of a base, such as the above-described multi-column automatic processing machine. Another object of the present invention is to provide a long workpiece machining system capable of efficiently simultaneously machining different machining using the same machining program.

[0012]

In order to achieve the above object, the present invention movably positions two or more turrets along a single long workpiece fixed on a fixed base, and the main spindle of each turret. A processing system for simultaneously performing a plurality of processes on the workpiece by operating the heads at the same time, and a centralized control device containing a single processing program,
It is provided with two or more tool rests each having a spindle head that is controlled and moved according to the program based on a command signal from the control device, and that the machining areas of the respective tool rests do not overlap each other. Being stipulated,
A long work piece characterized in that, in response to an operation signal based on a machining program outside the machining area of each turret, a machining end suspicion signal is output before the turret is operated and machining is not executed. The processing system is the main component.

[0013]

When the previous machining of a turret is completed, the controller issues a movement command to the turret to the next machining position based on the machining program. At this time, the determination unit of the control device determines whether or not the next machining position deviates from the machining area of the turret 3. If the machining position deviates from the machining area of the turret 3, the turret Stop moving. When this stop command is issued, all the operation data of various devices related to the same machining according to the subsequent machining program are treated as temporary data.

Therefore, while the tool rest is stopped, the control device continues to issue a machining command based on the procedure according to the above-mentioned machining program, but the tool post continues to the machining program outside the machining area sent from the control device. In response to the command signal based on this, each time the program advances, a false signal indicating that the machining is completed is not sent back before the tool post is operated, and actual machining is not performed, but provisional processing is performed only by information processing on the machining program. After the above-mentioned temporary processing is sequentially performed according to the machining program, if the movement position of the tool post based on the movement command from the control device moves into the execution area, the temporary processing is changed from the temporary processing to the actual processing and the tool post is stopped. It will be canceled. After that, predetermined machining is executed according to the machining program.

Since the temporary processing only consumes the data processing time, the stop time of the tool post is actually small and can be almost ignored. With respect to the other turrets as well, the same machining program is used to perform the same control as the above-mentioned control, but the machining in each machining region is performed in parallel in a substantially simultaneous state.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A typical embodiment of a processing machine using the processing system of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a schematic front view showing an overall configuration of an aluminum sash processing machine of the present invention in which two tool rests are mounted on a fixed base, FIG. 2 is a plan view of the same machine, and FIG. FIG. 4 is an operation explanatory view of the intermediate stopper when processing the workpieces, and FIG. 4 is an operation explanatory view of the end stopper and the intermediate stopper during loading when simultaneously processing two workpieces by the same machine.

In the aluminum sash processing machine, two tool rests 3 are mounted on a long fixed base 2 which secures a processing space for the long aluminum sash material 1 as described above. In the illustrated example, a vertical milling machine (also used as a drilling machine) is used, and of course, although not shown, an automatic tool changing device is provided. The tool rest 3 includes a composite table, and the first slide table 3a moves positionably on a rail 4 provided in parallel to the longitudinal direction of the fixed base 2, and the second slide table 3b is orthogonal to the rail 4. It can be moved in the desired direction. A known means is adopted as a driving means for that purpose, for example, a feed screw and a ball nut (not shown) are attached, and a rotation angle of a feed motor (not shown) is controlled by a command based on processing data from the control device 5. The above 2 according to the usual method
Axial movement positioning is performed. Furthermore, the turret 3
The spindle head 3c is controlled to move up and down along the second slide table 3b by a well-known feed screw and a ball nut, for example.

Further, a plurality of (eight in total in the illustrated example) vices 6 are provided in a row in the work setting portion of the fixed base 2, and the same number (4) of vices 6 are provided in the middle portion of the work setting portion. The intermediate part stopper 7 which is a part of the characteristic part of the present invention is installed so as to be sorted into the left and right, respectively, and
Left and right end stoppers 8 that are also a part of the feature of the present invention are installed at both ends in the length direction of the work setting part.

FIG. 5 shows the structure of the intermediate stopper 7, and FIG. 6 shows the structure of the vise 6. According to FIGS. 1, 2, 5 and 6, the base surface of the intermediate portion of the work mounting portion of the fixed base 2 is open in the length direction, and the upper surface along the edge of the opening has the above-mentioned structure. The guide rail 9 of the vise 6 is extended, and the vise 6 is movable along the guide rail 9 in the longitudinal direction of the fixed base 2.

In FIG. 5, the intermediate stopper 7 has a block-shaped base material 10, and the base material 10 is fixedly mounted on the fixed base 2 so as to straddle the guide rails 9 extending in parallel. . A pair of pin guide holes 10a having bushes 10b attached to the inner surface are formed in front and rear of the base material 10 (right and left in FIG. 5) so as to penetrate vertically, and a cylinder is attached in the middle of the pair of pin guide holes 10a. The hole 11 is formed.

The cylinder mounting hole 11 has a rod 1
A cylinder 12 is fixedly provided by projecting 2a upward, and the upper end of the rod 12a is fixed so as to support the center of a regulating member 13 having an inverted concave cross section from below. Further, the upper end of the guide pin 14 is fixed to a portion corresponding to the pin guide hole 10a before and after sandwiching the rod 12a, and the lower end of the guide pin 14 is inserted into the pin guide hole 10a. In this case, the rod 12
The stroke length of “a” is set such that it moves up and down between the position where the side surface of the regulating member 13 abuts on the installation end face of the aluminum sash 1 and the lower position outside the installation end face.

On the other hand, the basic structure of the left and right end stoppers 8 installed at both ends in the lengthwise direction of the work setting portion is the same as that of the intermediate stopper 7, and a cylinder (not shown) is fixed and a plate is provided. Pin guide hole 17 for guiding the two guide pins 16 attached to the regulation member 15
The base material 17 has a. However, the end stopper 8 is arranged such that the two guide pins 16 are vertically parallel to each other so as to assume a horizontal posture, and the pair of left and right regulating members 15 are provided.
The base material 17 is fixed to the upper surface of the fixed base 2 so as to face each other.

Further, each of the vices 6 has the structure shown in FIG. As shown in the figure, the vice 6 comprises a block-shaped base material 18 and two sets of clamp units 19 mounted on the base material 18. The block-shaped substrate 1
The lower surface of 8 has a saddle portion 18a that is slidably fixed to the guide rail 9 so that the installation position of each vise 6 can be adjusted to a position where it does not interfere with the processed portion of the aluminum sash material 1. Has been done. Further, a guide groove 18b extending in the front-rear direction (left and right in FIG. 6) is formed on the upper surface of the base material 18. The clamp unit 19 is attached to the guide groove 18b.

Clamp unit 19 in this embodiment
Is a fixed jaw 19a and a movable jaw 19b as shown in FIG.
And a cylinder 19c for driving the movable jaw 19b. The fixed jaw 19a and the cylinder 19c
Both of them are detachably attached to the base material 18 by a fastener (not shown), and are slidable by being guided by the guide groove 18b, and the gap between the two according to the clamp width of the aluminum sash material 1. Can be adjusted.

According to the processing machine for the aluminum sash material 1 constructed as described above, the plurality of tool rests 3 are operated with respect to the aluminum sash material 1 of various lengths for efficient processing. enable. The procedure for setting the sash material 1 when a plurality of processes are performed on the single aluminum sash material 1 at the same time will be described with reference to FIG. The position of the regulating member 14 of one of the end stoppers 8 of the end stoppers 8 is fixed to the set position, and the intermediate stopper 7
The regulating member 13 is moved downward from the lower surface position of the work. Then, the regulating member 1 for the one end stopper 8
The aluminum sash material 1 is placed on the vise 6 so that one end surface of the aluminum sash material 1 contacts the side surface of 3 or 14. In this state, the cylinders 19c of all the vices 6 are operated to clamp the aluminum sash material 1 at a plurality of points in the length direction. After this, in order to avoid interference with the tool during edge processing,
The left and right regulating members 14 are separated from both end surfaces of the aluminum sash material 1.

As can be understood from the above procedure, the intermediate stopper 7 is not necessary when processing a single work at the same time, and one of the end stoppers 8 arranged on the left and right is one of the end stoppers. 8 has a positioning function for determining the reference position of the work. Using the workpiece contact position of the regulating member 14 of the end stopper 8 as a reference point, the control device 5 determines the machining reference point of the workpiece from the workpiece contact position of the regulating member 14 of the end stopper 8.

The illustrated processing machine is capable of simultaneously performing a plurality of processes on a plurality of relatively short aluminum sash materials 1. According to FIG. 3, when two aluminum sash materials 1 are processed at the same time, the cylinder 12 of the intermediate stopper 7 is operated to extend the rod 12a, and the regulating member 13 is brought into contact with the end surface of the aluminum sash material 1. Raise to position. Next, after the aluminum sash material 1 is placed on each of a plurality of vices 6 whose positions have been adjusted by dividing the left and right of the intermediate portion stopper 7, one end surface of each aluminum sash material 1 is attached to the regulating member 13. Contact the left and right sides. Subsequently, the cylinders (not shown) of the end stoppers 8 installed at the left and right ends of the fixed base 2 are operated to bring the regulating members 14 into contact with the other end surfaces of the aluminum sash materials 1, respectively.

When this contact is completed, the cylinder 19c of the vise 6 is actuated to move the movable jaw 19b to the fixed jaw 1.
9a, and the side surface of each aluminum sash member 1 is clamped and fixed by both jaws 19a and 19b. When all the above operations are completed, the intermediate stopper 7 and the end stopper 8 are returned to their original positions in order to avoid interference with the tool at the time of processing the end, and the setting of the aluminum sash material 1 is completed.

In this case, the intermediate stopper 7 has a positioning function for determining the reference position of the work, and the position where the work contacts the regulating member 13 of the intermediate stopper 7 is used as a reference point for control. The machining reference point of the work is determined by the device 5 from the work contact position of the regulating member 14 of the end stopper 8. In the illustrated example, two tool rests 3 are mounted, but the number of the intermediate stoppers 7 and the tool rests 3 installed is not limited to the illustrated example.

By the way, the processing system of the present invention is adopted for the long workpiece processing machine having the above-mentioned configuration.
That is, the present invention uses the same machining program over the entire machining area to simultaneously operate a plurality of tool rests 3 on the same workpiece, and FIG. 7 shows a machining procedure for the machining. One of the main purposes of the workpiece machining system of the present invention is to perform a plurality of machinings simultaneously by a plurality of tool rests 3 based on the same machining program.
In this case, the processing area of one tool rest 3 naturally covers the entire area of the work having a predetermined length. Therefore, if a plurality of turrets 3 are simultaneously operated based on a simple machining program, even if interference between the turrets 3 can be avoided, the same machining will be performed at the same machining position. 3 will be repeated multiple times.
In order to avoid this, in the present invention, the execution machining area for each turret 3 is defined in advance so that the turrets 3 perform machining only in different machining areas that do not overlap each other.

The machining procedure will be described with reference to FIG. 7. When the previous machining of a tool post 3 is completed, the controller 5 issues a movement command to the tool post 3 to the next machining position based on the machining program. Be done. At this time, the determination unit of the control device 5 determines whether or not the next machining position deviates from the machining area of the turret 3, and if the machining position deviates from the machining area of the turret 3, The movement of the turret 3 is stopped. When this stop command is issued, all the operation data of various devices related to the same machining according to the subsequent machining program are treated as temporary data. Then
Even while the tool rest 3 is stopped, the control device 5 continues to issue a machining command based on the procedure according to the machining program, but the tool rest 3 is based on the machining program outside the machining area, which is continuously sent from the control device 5. In response to the command signal, each time it receives the same signal, it sends back a false signal indicating the end of machining, and the actual operation of various equipment related to the same operation, such as automatic tool change, machining liquid supply spindle rotation control, etc. is inactive. Put it in. In this case, only information processing on the machining program is performed as a temporary process. After the above-described temporary processing is sequentially performed according to the processing program, when the movement position of the tool post 3 based on the movement command from the control device 5 moves into the execution area, the processing related to the same processing by the various devices is changed from the temporary processing to the actual processing. At the same time as the processing, the stop of the tool rest 3 is released. After that, predetermined machining is executed according to the machining program.

Since the provisional processing only consumes the data processing time, the stop time of the tool rest 3 is actually very small and can be almost ignored. With respect to the other turrets 3 as well, the same machining program is used to perform the same control as the above-described control, but the machining in each machining region is performed in parallel with almost simultaneous progress.

When a plurality of tool rests 3 are simultaneously operated in the same machining, the spindle heads 3c of adjacent tool rests 3 may interfere with each other even if the machining positions are different. Therefore, in actual processing, it is necessary to take measures to avoid such interference.

FIG. 8 shows a procedure in the case where the spindle head 3c of one tool rest 3 enters the machining area of the spindle head 3c of the other tool rest 3. That is, according to the machining procedure at this time, the one tool post 3 sequentially advances the predetermined machining according to the machining program in accordance with the command from the control device 5, and moves the spindle head 3c to the next machining position when the control device 5 is operated. Then, by comparing the position information of the destination of the spindle head 3c with the position information of the spindle head 3c of the other tool rest 3,
If it is confirmed that the spindle head 3c of the other tool rest 3 is not in the interference area even if one of the tool rests 3 is moved and does not interfere with the same spindle head 3c, the one tool rest 3 is left as it is. Move 3 to the next machining position. Further, when the position information of the destination of the one spindle head 3c and the position information of the other spindle head 3c are compared by the control device 5, the spindle head 3c of the other tool rest 3 may exist in the interference region. When it is confirmed, one of the tool rests 3 stops at the position before the movement, and the movement is started after waiting for the end of the machining by the other spindle head 3c.

[0035]

As is apparent from the above description, according to the long workpiece machining system of the present invention, a single workpiece can be machined at a plurality of positions at the same time by using the same machining program. In addition to facilitating program creation and cost reduction, it is an extremely effective invention that realizes efficient machining.

[Brief description of drawings]

FIG. 1 is a front view showing a cutaway view of a part of an aluminum sash processing machine that is a typical embodiment of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is an explanatory view of a stopper function when setting a single work on the machine.

FIG. 4 is an explanatory view of a stopper function when setting a plurality of works on the machine.

FIG. 5 is a cross-sectional view showing a structural example of an intermediate portion stopper of the present invention.

FIG. 6 is a sectional view showing a vise mechanism of the present invention.

FIG. 7 is a flowchart showing the control operation of the tool post when the same machining program is used by a plurality of tool posts by the machine tool of the present invention.

FIG. 8 is a flow chart showing a control operation for avoiding interference of the tool rest when processing a plurality of works by the processing machine of the present invention.

[Explanation of symbols]

 1 Aluminum sash material 2 Fixed base 3 Turret 3a First slide table 3b Second slide table 3c Spindle head 4 Rail 5 Control device 6 Vise 7 Intermediate stopper 8 End stopper 8a Cylinder 9 Guide rail 10,17,18 Base material 10a, 17a Pin guide hole 10b Bush 11 Cylinder mounting hole 12 Cylinder 12a Rod 13, 15 Restricting member 14, 16 Guide pin 18 Base material 18a Saddle part 18b Guide groove 19 Clamp unit 19a Fixed jaw 19b Movable jaw 19c Cylinder

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[Procedure amendment]

[Submission date] September 14, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0002

[Correction method] Change

[Correction contents]

2. Description of the Related Art Conventionally, a machine tool or a long work machine equipped with a plurality of turrets for efficiently performing cutting or the like on various kinds of works and capable of simultaneously processing a single work or a plurality of works. It has been known. An example of such a machine tool is disclosed in Japanese Patent Application Laid-Open No. 2-30401.
There is a spindle facing CNC lathe, and as an example of a long work machining machine, there is a multi-column automatic machining machine disclosed in Japanese Patent Laid-Open No. 4-193440.

[Procedure amendment]

[Submission date] April 6, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0002

[Correction method] Change

[Correction contents]

[0002]

2. Description of the Related Art Conventionally, a machine tool or a long work machine equipped with a plurality of turrets for efficiently performing cutting or the like on various kinds of works and capable of simultaneously processing a single work or a plurality of works. It has been known. An example of such a machine tool is disclosed in Japanese Patent Application Laid-Open No. 2-30401.
There is a spindle facing CNC lathe, and as an example of a long work machining machine, there is a multi-column automatic machining machine disclosed in Japanese Patent Laid-Open No. 4-193440.

Claims (1)

[Claims] 1. A plurality of turrets (3) are moved and positioned along a single long workpiece (1) fixed on a fixed base (2), and a spindle head (3) of each turret (3) is positioned. A machining system for simultaneously performing a plurality of machining operations on the workpiece (1) by simultaneously activating 3c), which is based on a central control device containing a single machining program and a command signal from the control device. Spindle heads (3c) that are controlled and moved according to the program and are controlled and driven by each
And two or more turrets (3) having the above, and the machining areas of the respective turrets (3) are defined so as not to overlap with each other, and machining programs outside the machining areas of the respective turrets (3) are provided. A long workpiece machining system characterized in that a machining end suspicious signal is output before the tool post (3) is actuated in response to an operation signal based on the above, so that machining is not executed.