JPH0224057A - Grindstone forming method in surface grinder and grindstone forming control device and program making device for rough grinding used therefore - Google Patents

Abstract

PURPOSE:To shorten the forming time of a grindstone and to reduce the wear of a finishing dresser by automatically performing a forming for rough grinding and that for finishing by series of stages. CONSTITUTION:A dresser (rotary dresser) 27 for rough grinding and dresser (oscillating dresser) 29 for finishing are provided on a table 7 freely movable in an X axial direction and a grindstone 17 is arranged freely movably in Y axial direction and Z axial direction. The grindstone 17 is subjected to forming for rough grinding by the notching cycle in the Y axial direction by this dresser 27 for rough grinding. Then, the grindstone 17 is subjected to forming for rough grinding by the dresser 29 for finishing. The forming time of the grindstone 17 can thus be shortened, the wear of the dresser 29 for finishing can be reduced and the forming accuracy can be increased.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a grindstone forming method and a grindstone forming control device in a surface grinder, and a roughing program creation device used therein.

(Prior art) Conventionally, in a surface grinding machine, a table is provided on the bed that can freely move back and forth in the X-axis direction, and a column that is movable in the Z-axis direction is provided on the pet. A grindstone head is provided that is movable in the direction. A freely rotatable grindstone is attached to this grindstone head.

Therefore, grinding is performed by placing a workpiece on a table, reciprocating the table in the X-axis direction, and sending a rotatable grindstone in the Y- and Z-axis directions to make a cut in the workpiece. .

When forming a grindstone, it is known to use a dresser installed on a table, commonly known as a wheel-mounted mold.

(Problems to be Solved by the Invention) By the way, when forming a grindstone using the table-top dresser installed on the conventional table L mentioned above,
In addition to using a grindstone to imitate the dresser, when rough forming and finishing forming are performed simultaneously, the depth of cut is reduced.

Therefore, in the case where the grinding wheel is shaped like a dresser to perform the forming process, there is a problem in that the forming process takes a very long time because the cutting depth cannot take a large value at one time.

In addition, the intersection needle 0 of the forming process by copying process is the automatic block [I
There is a problem in that a programming device is used and a large number of programs ω are required.

Furthermore, when performing rough forming and finishing forming with one dresser, the dresser itself is subject to severe wear, requiring replacement within a short period of time, and the accuracy is not satisfactory. There was a problem.

The purpose of this invention is to install a roughing dresser and a finishing dresser on the table so that rough cutting and finishing forming can be performed automatically in a series of processes, and the grinding wheel. A method for forming a grindstone in a surface grinder that shortens forming time, performs rough cutting using a Y-axis cutting cycle rather than copy forming, reduces wear on a finishing dresser, and improves accuracy. An object of the present invention is to provide a grindstone forming method M and a rough cutting program creation device used therein.

[Structure of the invention]

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a roughing dresser and a finishing dresser on the table of a surface grinding machine, and performs roughing forming processing with the roughing dresser. This is a method for forming a grindstone in a surface grinding machine, in which a finishing process is automatically performed in a series of steps using a finish-V dresser.

In the grindstone forming method, it is preferable that the rough cutting process is performed using a rough cutting dresser in a cutting cycle in the Y-axis direction.

In addition, this invention includes a grindstone that is movable in the Y-axis direction and the Z-axis direction, a dresser that is provided on a table that is movable in the X-axis direction, and includes a roughing dresser and a finishing dresser, and a finishing dresser. Memorizes a copying program that stores a copying program for finishing forming, and a roughing program for performing roughing forming using a cutting cycle in the Y-axis direction with a roughing dresser. A grindstone forming control device for a surface grinder is constructed, which is equipped with a program memory for rough cutting, and an NC device that automatically controls the surface grinder.

Further, the present invention includes a copying program memory that stores a copying program, and a copying program stored in the copying program memory to perform copying at a position a certain distance away from the cutting point. a registering means for reading and registering the position of the cutting point in parallel processing during the recording process; and a rough cutting program memory for storing a rough cutting program created based on the cutting point recorded in the six recording means. A rough cutting program creation device was constructed.

(Function) By adopting this invention, the rough cutting process is performed using the rough cutting dresser installed on the table, and then the finishing forming process is performed automatically in a series of steps using the finishing dresser installed on the table. By doing so, the time required to form the grindstone is shortened, the wear of the finishing dresser is reduced, and accuracy is improved.

By performing the rough cutting forming process in a cutting cycle in the Y-axis direction, the rough cutting forming process can be performed in a short time.

By employing this rough cutting program creation device, a rough cutting program can be created in a short time without using an automatic programming device, and stripping is simple and easy.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

Referring to FIG. 1, a guide rail 5 extending in the left-right direction (hereinafter referred to as the X-axis direction) is provided on a box-shaped bed 3 of a surface grinding machine 1 equipped with an NC device. A table 7 is provided on the guide rail 5 and is guided by the guide rail 5 and is movable back and forth in the X-axis direction by a hydraulic cylinder (not shown).

On the bed provided tangentially to the bed 3, there is a
Hereinafter, they are referred to as the 7 emotional directions. ) is provided with a column 9 which is movable by a servo (not shown) by a drive motor. This column 9 has a vertical direction, hereinafter referred to as the Y-axis direction. ), and a grindstone head 15 that is guided by the guide member 11 and movable in the Y-axis direction by a drive motor 13 such as a servo motor is provided on the column 9. Grinding wheel head 1
5 is a grindstone 17 that can be freely rotated by a drive motor (not shown).
is installed.

On the front side of the F part of the bed 3, a column 9, a grinding head 5 and a head 1 are installed.
Manual handles 19 and 21 are attached for manually feeding 5 in the Z-axis direction and the Y-axis direction, respectively. An NC device 25 for automatically controlling the surface grinding machine 1 is installed on the right side of the bed 3, for example, via a single-shaped bracket 23.

With the above configuration, a workpiece (not shown) can be placed on the table 7, and the NC device 25 (7) can be placed on the table 7. IJ ill till
At the same time as reciprocating the lapel 7 in the X-axis direction, the column 7 is sent in the Z-axis direction, the grindstone head 15 is sent in the YMh direction, and the grindstone 17 is rotated to perform grinding on the workpiece. .

At the left end of the table 7-[, there is provided a row cutter dresser 27 as a rough cutting side dresser, and at the right end there is provided a neck cutting dresser 29 as a finishing dresser, and the table 7 is stopped at the right end and the left end, respectively. Sometimes, the rotary dresser 27 and the oscillating dresser 29 are installed directly below the grindstone 17 so as to determine <Qflff.

With the above configuration, when forming the grindstone 17, the rotary dredgeners 27 provided at the left and right ends of the table 7
The head dresser 29 is automatically controlled by the NC device 25 to perform rough cutting and finishing of the grindstone 17 in a series of steps.

For more details, see the flowchart shown in Figure 2! To explain, in step S1, the table 7 is stopped at the right end, and rough positioning is performed so that the rough cut dresser 27 is positioned directly below the grindstone 17. Step $2
(Details later) The grinding wheel 17 is cut into the rotary dresser 27 in the 7-axis direction, and the column 9 is fed at a constant pitch in the 7-axis direction. Dressing processing is performed by so-called Y-axis cutting (roughing forming processing). Do this.

In step S3, a dressing process by copying, which is a known forming process, is performed.

Next, in step S4, the table 7 is activated, and in step S5, the table 7 is stopped at the left end, and finishing positioning is performed so that the oscillating dresser 29 is positioned directly below the grindstone 17. In step S6, the neck (crotch dresser 29) performs dressing T (finishing) by copying, and the process ends.

In this way, the left end of the table 7 in the surface grinding machine 1,
A rotary dresser 27 and an oscillating dresser 29 are installed at the right end, and are automatically controlled by the NC device 25, so that rough cutting and finishing dressing B0 operations can be performed in a series of steps, thereby reducing the forming time of the grindstone 17. It is possible to significantly shorten the time compared to the conventional one, and in particular, it is possible to reduce the wear of the swinging dresser 29 as a finishing dresser, and it is possible to improve the finishing quality.

FIG. 3 shows a block diagram of the structure in which the whetstone 17 is formed by the O-Tari dresser 27 and the neck (long dresser 29).

In FIG. 3, drive motors 33 and 13, such as servo motors, are interlocked and connected to the NC device 25 to move the column 9 and the grindstone head 15 in the 7Iit11 direction and the Y-axis direction, respectively, via an interpolation section 31. ing. Therefore, by driving the drive motor 33.13, the column 9
, the grindstone head 15 moves in the Z-axis direction and the Y-axis direction, and the grindstone 17 is controlled to move in the Z-axis and Y-axis directions.

A program memory 35 for copying is connected to the NO6 station 25 for copying and dressing using a rotary dresser 27 and an oscillating dresser 29. As shown in FIG. 4, the copying program memory 35 stores a copying program for performing copying dressing.

When performing rough dressing on the grinding wheel 17 using the rotary dresser 27, the rotary dresser 27 has greater rigidity in the vertical direction than in the horizontal direction, as shown in FIG. As shown in Figure jJI6, rough dressing is performed by cutting in the vertical direction (Y-axis direction).

To explain how to register the cutting points at this time, as shown in Fig. 7, the actual points to cut are P1 to Pl+, but in order to obtain the coordinate values, it is necessary to calculate the number of items. While requiring , a tracing movement is made at positions separated by ρ as shown in P1' to P11', and points are registered for each pitch.

That is, in FIG. 3, the copying program stored in the copying program memory 35 is transferred to the NC device 25.
Enter the information to perform automatic operation.

At this time, the grindstone 17 is moved to the drive motor 13 around the Y-axis via the interpolation section 31 at a position a hair apart as shown in P1' to P11' in FIG. It is moved by a drive motor 33 around the Z axis. During this movement, in a parallel process, the coordinates 1+a from the NC device 25 are stored in the registration means 37 connected to the NC device 25.
The value of pn=pn'+Q is read as shown in FIG. 8, and the rough cutting program is stored in the rough cutting program memory 39 connected to the registration means 37 as shown in FIG. . The rough cutting program stored in the rough cutting program memory 39 is transferred to the NC device 25.
By inputting and automatically operating the machine, the rotary dresser 27 can easily and easily carry out the Y-axis cut dressing for rough cutting, and in a short time.

The operation of the σ recording procedure for performing Y-cut dressing for rough cutting using the rotary dresser 27 will be explained based on the flowchart shown in FIG. 10. First, step S
7, the first target value is P+, P2 in FIG.
' , Pn ', ..., P.

Set. In step S8, it is determined whether the copying cycle has ended or not, and if the copying cycle has ended, it ends as is.

If the copying cycle has not ended, the process advances to step S9, and the Z-axis position, ie, PI', P2P3', . . .
, Pn'. In step $10, the value of the Z axis is determined by the target M, and if it is not the target (jO), the value of the Z axis is determined as
Return to the front of 9. If it is before the target, the process advances to step S11, and the coordinate values of the Y and Z axes, for example, Pn' are read.

In step S12, the cutting point, that is, the position of the Y and Z axes (P
+, P2, Pn, -, and Pn- are registered in the registration means 37. In step 813, the target value is tightened.

One cycle is completed up to step S13, and step S
Return to step 8 and continue until the preset copying cycle is completed.

In this way, without using automatic programming equipment,
By cutting in the Y-axis direction, a rough cutting program can be created easily and in a short time.

Next, the operation of performing Y-sleeve incision dressing for rough cutting using the rotary dresser 27 will be explained based on the flowchart shown in FIG. 0 point). In step S15, it is determined whether the dress starting point has ended or not. If it has ended, the process ends as is; if it has not finished, the process advances to step S16.

In step 816, the grindstone 17 is moved along the Z axis to the next cutting point (P1' in FIG. 7). Y in step 817
@ Cut to the right. (P+ in FIG. 7) Next, in step 818, the grindstone 17 is returned to its original position on the Y axis, and returned again to the front of step S15, and continues until the cycle is completed.

In this way, by performing parallel processing using the copying program, it is possible to easily and easily create a program for the rough cutting dress cycle of the rotary dresser 27, and this program is stored in the rough cutting program/meser 39. be able to.

Therefore, using the copying program and the rough cutting program stored in the copying program memory 35 and the rough cutting program memory 39, the rotary retrenner 27 is operated based on the flowchart already described in FIG. (Dressing for rough cutting and finishing with the tall dresser 29) can be carried out by oneself.

Note that the present invention is not limited to the embodiments described above, but can be implemented in other forms by making appropriate changes in design. For example, in this embodiment, a rotary dresser 27 is used as a roughing dresser, and a one-neck dresser 29 is used as a finishing dresser, but other dressers may be used. Also, a rotary dresser 27 is placed on the left end of the table 7.
I explained this by installing two neck dressers on the right end, but
The rotary dresser 27 and the neck dresser 29 may be installed oppositely, or they may be installed at the opposite positions of the table 7.

〔Effect of the invention〕

As can be understood from the above description of the embodiments, according to the present invention, the rough cutting forming process and the finishing forming process can be automatically performed in a series of steps, so that the grinding wheel can be The molding time can be shortened, wear of the finishing dresser can be reduced, and accuracy can be improved.

Since the forming process for rough cutting is performed in the cutting cycle in the Y-axis direction, the forming process for rough cutting can be performed in a short time.

In addition, since it is possible to create a rough cutting program by cutting in the Y-axis direction using a rough cutting program creation device, there is no need to use a conventional self-help programming device, and the rough cutting tool [1 gram Can be created in a short time,
Moreover, it is simple and easy to handle.

[Brief explanation of the drawing]

Figure 1 shows W of a surface grinding machine according to an embodiment of the present invention.
2 is a flowchart explaining the invention in detail, FIG. 3 is a block diagram explaining the invention, FIG. 4 is an example of a copying program for finishing molding,
Figure 5 is a partial view of the rotary dresser, Figure 6 is a relationship diagram between the grindstone and the rotary dresser to explain the cut in the Y@right direction for rough cutting, and Figure 7 is the cut in the Y-axis direction. An explanatory diagram for creating a rough cutting program, Figure 8 is an explanatory diagram for determining the cutting point,
Figure 9 is an example diagram of a cutting cycle in the Y-axis direction, Figure 10
The figure is a flowchart up to registering the cutting point, step 11.
The figure is an O-chart until the rough cutting program is created. 1... Surface grinder 7... Daple 17...
Grindstone 25...NC device 27...Rotary dresser (roughing dresser) 29...1-neck dresser (finishing dresser) 1...Surface grinding machine
7...Table 17...Whetstone 25...
NC device 27...Rotary dresser (roughing tray 29...oscillating dresser (finishing) Diagram 7] ○ Diagram Proceedings (spontaneous) Palace of the Commissioner of the Patent Office Date of September 1988 1. Indication of the case 2. Name of the invention 3. Address (residence) of the person making the amendment in relation to the case. Name (Name) Agent Address: Patent Application No. 170888/1988 Grindstone forming method and grindstone forming system m+ device for surface grinding machine

Claims (4)

[Claims] (1) A rough cutting dresser and a finishing dresser are installed on the table of a surface grinding machine, and the rough cutting dresser performs rough cutting forming processing, and then the finishing dresser performs finishing forming processing in a series of steps. A grindstone forming method for a surface grinder that is characterized by dynamic processing. (2) In claim 1, the rough cutting dresser is Y
A grindstone forming method for a surface grinder, which is characterized by performing rough cutting forming processing in an axial cutting cycle. (3) A grindstone that is movable in the Y-axis direction and the Z-axis direction, and
A dresser consisting of a roughing dresser and a finishing dresser installed on a table that is movable in the axial direction, a copying program memory that stores a copying program for finishing forming processing with the finishing dresser, and a roughing dresser. A rough cutting program memory that stores a rough cutting program for performing rough cutting forming processing by cutting cycles in the Y-axis direction with a machine dresser, and an NC device that automatically controls a surface grinder. A grindstone forming control device for a surface grinder, which is characterized by: (4) While copying is being performed at a position a certain distance away from the cutting point using the copying program memory that stores the copying program and the copying program stored in this copying program memory. The present invention is comprised of a registration means for reading and registering the position of the cutting point in parallel processing, and a rough cutting program memory for recording a rough cutting program created based on the cutting point registered in the registration means. Features: Roughing program creation device.