JP2000071156A - Data forming device for nc grinding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent data input error from generating machining failure by displaying a work with a raw material size on a screen, displaying a grinding wheel on the screen according to the input data, and eliminating a part where the grinding wheel of the work is different from the screen, with a calculating device, when a recognition mode is specified. SOLUTION: When a single display is selected and a start button is pushed, a position of a grinding wheel after finishing of q1 is displayed, a red part overlapping on the position of the grinding wheel is eliminated from a screen, a right and bottom coordinate is displayed. Every time the start button is pushed, coordinate after finishing of each of processes q1-q14 is displayed, and red parts overlapping on the grinding wheel are sequentially eliminated from the screen. The screen after finishing of the machining is displayed as an after- machining shape or a product shape. A worker recognizes the after-machining shape and coordinates of each process sequentially displayed on the screen, and recognizes suitability of a machining program.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an NC grinding machine which grinds the surface of a work by relatively moving a grindstone and a work in a vertical direction perpendicular to a grindstone axis and in a front-rear direction parallel to the grindstone axis by NC control. The present invention relates to a data creation device for a computer.

[0002]

2. Description of the Related Art An NC grinding machine relatively moves a grindstone and a work vertically in a direction perpendicular to a grindstone axis and in a front-rear direction parallel to a grindstone axis according to a machining program describing machining conditions, machining positions, and the like, which are input in advance. It is a device that moves and grinds the surface of a work, and can perform processing with excellent accuracy.

Prior to actual machining, a method of confirming the contents of an inputted machining program includes a method of displaying a machining program on a display device attached to an NC device while mechanical units such as a grindstone and a table are stopped. Alternatively, a method has been adopted in which a machine unit such as a grindstone or a table is operated in a state where a workpiece is not set (so-called idle operation state) to check a movement path of the grindstone.

[0004]

In the former method, the relationship between the work and the grindstone must be calculated from the coordinates of the grindstone shown on the NC device or the display device connected to the NC device. It took In addition, the latter is easier to confirm than the former in that it can be visually checked, but when the processing steps are complicated, the confirmation becomes troublesome.

When the processing shape is a groove or a stepped surface, it is necessary to input the position of the grindstone for each processing step, and it is troublesome to create a processing program and has no knowledge of the processing program. The operator cannot create a machining program. Therefore, the present inventor has disclosed in Japanese Patent Application No.
In No. 350, a computing device, a plurality of processing patterns connected to the computing device, a plurality of processing patterns capable of specifying dimensions of each part in a direction perpendicular to the grinding wheel axis and in the grinding wheel axis direction, and a storage device including a plurality of grinding procedures, A display device connected to the arithmetic device and having a screen capable of graphic display; and a means connected to the arithmetic device and inputting a dimension and a grinding procedure to the processing pattern. A data creation device for an NC grinding machine that combines collected data into one piece of processing data was proposed. According to this technology, even a worker who does not have knowledge for creating a machining program divides a workpiece to be machined in the front-rear direction so as to conform to the machining pattern, and for each of the divided machining patterns. A machining program could be easily created simply by inputting data.

However, the machining pattern is a model for inputting dimensions, and does not show an actual work in a reduced size. For this reason, it was difficult to imagine the product shape after processing from the processing pattern. In addition, it is necessary to check the interference of the grindstone with the adjacent processing pattern, and it is necessary to make it easier to confirm the contents of the processing program than before.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems in the prior art, and it is possible to easily confirm on a display device screen that a created machining program is a desired one prior to actual machining. An object of the present invention is to provide an NC grinding machine data creation device that can prevent the occurrence of processing defects due to input errors and can reduce the confirmation time.

[0008]

In order to achieve the above object, an invention according to claim 1 is an arithmetic unit and a dimension specification of each part connected to the arithmetic unit and in a direction perpendicular to a grinding wheel axis and in a grinding wheel axis direction. A plurality of processing patterns, a storage device having a plurality of grinding procedures, a display device connected to the arithmetic device and having a screen capable of displaying a graphic, and a processing device connected to the arithmetic device, the processing pattern Means for inputting a dimension and a grinding procedure, so that data input for each processing pattern is combined into one processing data.
In the data creation device for the C grinding machine, when the confirmation mode is designated, the arithmetic unit displays the work of the material dimensions on the screen, and then displays the grindstone on the screen according to the input data. The work is characterized in that a portion of the work where the grindstone overlaps is erased from the screen.

Further, the invention of claim 2 is characterized in that, in claim 1, the coordinates of the grinding wheel are displayed together.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. FIG. 1 is a configuration diagram of a data creation device for an NC grinding machine according to the present invention, and FIG. 2 is a diagram illustrating an example of a work. In FIG. 1, reference numeral 10 denotes an arithmetic unit.
A hard disk device 11 is connected to the arithmetic unit 10 and stores an operation program and a processing pattern. Reference numeral 12 denotes a floppy disk driver,
0 and used for data backup.
Reference numeral 13 denotes a display device having a screen capable of graphic display, which is connected to the arithmetic unit 10. Reference numeral 14 denotes an input device such as a keyboard. Note that the input device in the present embodiment is a touch panel, and is integrated with the display device 13. Reference numeral 15 denotes a communication cable, which is an N of the arithmetic unit 10 and the grinding machine.
C controller 16 is connected.

In FIG. 2, a work 18 is fixed to a table 22 via a spacer 19 so as to match a side surface 21 of a positioning plate 20. Then, the reference position Z = 0 in the front-rear direction (Z direction) where the side surface 21 is the grinding wheel axis direction, and the left side of the figure is positive. The reference position Y = 0 in the vertical direction (Y direction) perpendicular to the grinding wheel axis is the surface of the table 22, and the upper part of the figure is plus. The table 22 is movable in a direction perpendicular to the plane of the drawing, and the grindstone 23 is movable in the front-rear direction as shown. In the case shown in the figure, the part of the work 18 is machined from the material dimensions indicated by the two-dot chain line to the surface of the solid line indicated by the triangle symbol.

The procedure for inputting the dimensions and the grinding method will be described below. 3 is a flowchart showing an input procedure, FIG. 4 is a processing pattern selection screen, and FIGS. 5 and 6 are dimension input screens. First, the processing pattern selection screen shown in FIG. 4 will be described. When the table 22 and the grindstone 23 are relatively moved in the direction perpendicular to the paper surface of FIG. 2 and in the front-back direction of FIG. 2, the grinding method is plunge grinding (the grindstone 23 is moved by a predetermined amount every time the moving direction of the table 22 changes). Move it down,
After processing to the expected dimensions, grindstone 2
3 is repeated until the machining is completed. ) Or traverse grinding ((moving the grindstone 23 by one predetermined amount in the front-rear direction each time the moving direction of the table 22 is changed, and moving the grindstone 23 downward by a predetermined amount when turning back at each moving end) , The processing is repeated until the processing is completed.), The processing shape can be represented by the YZ plane, and the processing content can be represented by moving the grindstone 23 with the work 22 fixed. Therefore, the processing patterns that are practically processed well are collected, and eight types of processing patterns shown in the figure are prepared.When the processing pattern P1 is to process a groove, the processing pattern P2 is the bottom surface and both sides of the groove. When processing a surface, P3 has a wall on the rear side of the processing portion, and when processing the wall surface and the horizontal surface, P4 has a wall on the front side of the processing portion, and when processing the wall surface and the horizontal surface, P5 has When machining plane, P6 when processing a bottom surface of the groove in the wall on both sides, P
7 is P when processing a horizontal surface with a wall on the back side of the processing part.
Reference numeral 8 is applied to the case of processing a horizontal surface having a wall on the front side of the processing portion.

Next, the input procedure will be described. In addition, the overlap margin α when the grindstone 23 is moved in the front-rear direction in advance, the cutting amount in the roughing step, the middle step, and the fine step, and the rightmost end K of the lowermost end of the outer peripheral surface (grinding surface) at the standby position of the grindstone 23 are described. The coordinates K (Yk, Zk) are input in advance. First, it is determined where the workpiece 30 is to be machined. Here, assuming that the part is processed before the part is processed, the division is performed by m in FIG. When a data input button (not shown) is pressed, a processing pattern selection screen (FIG. 4) is displayed.
Therefore, a processing pattern P8 suitable for processing a part is selected from the eight displayed processing patterns, and a processing pattern P8 on the screen is designated (step S100). Then, since the data input screen G8 (FIG. 5) is displayed, the material dimension C, the finishing dimension A, the total grinding allowance B, the medium grinding allowance H, the fine grinding allowance I, the width D of the spacer 19, the processing position E and the processing. After inputting the width F, the grinding method is input. Here, it is assumed that each step is to be subjected to plunge grinding, and PPP is selected (step S110). The dimensions and the input of the grinding method may be input in any order. Here, since it is necessary to input the processing data of the set, the next button (not shown) is pressed (step S12).
0). Then, each data input in step S110 is 1
Is collectively stored as one set as the second partial processing data,
It returns to the process of step S100.

As a part processing pattern, a processing pattern P5 on the selection screen of FIG. 4 is selected, and the processing pattern P5 on the screen is pressed. Then, since the data input screen G5 (FIG. 6) is displayed, the material dimension C, the finishing dimension A, the total grinding allowance B, the medium grinding allowance H, the fine grinding allowance I, the spacer 1
9, the width D, the processing position E, the processing width F, and the grinding method in the rough process, the middle process, and the fine process are sequentially input from the left.
Here, the PPT is selected, assuming that the rough process and the middle process are plunge grinding and the fine process is traverse grinding (step S11).
0). After the input of the processing data is completed, the save button is pressed (step S130). Then, the data input this time are collectively stored as a set as the second partial processing data, and are stored as workpiece processing data in association with the first partial processing data.

When the input of the data is completed and the data synthesizing button (not shown) of the data creating device is pressed after this, the arithmetic device 10 causes the hard disk device 11 to execute step S130.
The machining data corresponding to the grinding method entered in is called a blank machining program, the numerical values required for machining are calculated from the input data, and blanks in the machining program are filled in.
Processing programs for a rough process, a middle process, and a fine process for processing a part, and a processing program for a rough process, a middle process, and a fine process for processing a portion are created and stored. FIG. 7 is a diagram illustrating an example of the grindstone position set as described above, in which the main part is enlarged and the processing direction is described. The part is nine steps of q1 to q9, and the part is q1.
It is processed in five steps from 0 to q14. Note that q4 to q
6 is indicated by a dotted line and shifted in position because the lines overlap q1 to q3 and q7 to q9.

Next, the procedure for checking the machining program will be described. When a confirmation mode button (not shown) is pressed, approximately 3/4 of the display width in the left-right direction of the screen (hereinafter, referred to as an entire screen) becomes the full stroke in the front-rear direction, and the height direction of the screen becomes the full stroke in the vertical direction. And the remaining approximately 1 /
In four parts (hereinafter, referred to as an enlarged screen), enlarged views of a part to be ground are displayed. That is, on the initial screen, the work of the material size is displayed on the entire screen with the coordinates aligned, and the part is displayed on the enlarged screen. The material portion is displayed on the screen in green (solid in the figure), and the portion to be ground is displayed in red (hatched in the diagram).

Here, when the single display is selected and a start button (not shown) is pressed, the screen shown in FIG.
Q in FIG. 7 in which the lower end of the grindstone 23 is Y = A + I + H
The grinding wheel position at the end of 1 is displayed and overlaps with the grinding wheel position.
The red portion is deleted from the screen, and the coordinates K (Zk, Yk) of the lower right corner of the grindstone 23 are displayed. Hereinafter, each time the start button is pressed, the coordinates K at the end of each step of q1 to q14 are displayed, and the red portions overlapping the grindstone are sequentially deleted from the screen. Then, the screen at the end of processing is displayed as a post-processing shape, that is, a product shape, as shown in FIG. The operator confirms the post-machining shape and the coordinates of K in each step sequentially displayed on the screen, and confirms the suitability of the machining program.

In addition, the operator can grasp the entire process (14 steps in the above case) without knowing the number of steps in the processing at the time of inputting the data, thereby facilitating the processing time. Can also be estimated.

In the above description, single display is selected. However, if auto is selected, the steps q1 to q14 are continuously displayed.

Further, the data preparation device can be installed in an office remote from the NC grinder to examine the suitability of the machining program.

[0021]

As described above, according to the present invention,
An arithmetic unit, a plurality of processing patterns connected to the arithmetic unit and capable of specifying dimensions of each part in a direction perpendicular to the grinding wheel axis and in the direction of the grinding wheel axis, a storage device including a plurality of grinding procedures, and the arithmetic unit A display device having a screen that is connected and capable of graphic display, and a unit that is connected to the arithmetic device and that inputs a dimension and a grinding procedure to the processing pattern,
In a data creation device for an NC grinding machine that combines data input for each of the machining patterns into one machining data, when a confirmation mode is designated, the computing device displays a work of material dimensions on the screen. After displaying, the grindstone is displayed on the screen according to the input data, so that the portion of the work where the grindstone overlaps is erased from the screen, prior to actual machining,
It is possible to easily confirm on the screen of the display device that the created machining program is the desired one, and it is possible to prevent the occurrence of machining failure due to a data entry error and to shorten the confirmation time.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a data creation device for an NC grinding machine according to the present invention.

FIG. 2 is a diagram illustrating an example of a work.

FIG. 3 is a flowchart showing an input procedure.

FIG. 4 is a selection screen of a processing pattern.

FIG. 5 is an example of a dimension input screen.

FIG. 6 is an example of a dimension input screen.

FIG. 7 is a diagram illustrating set grinding wheel positions together with a processing order.

FIG. 8 is a view showing the progress of processing.

FIG. 9 is a processing end screen.

[Explanation of symbols]

 13 Display 18 Work 23 Whetstone

Claims (2)

[Claims] An arithmetic unit connected to the arithmetic unit;
A plurality of processing patterns capable of specifying dimensions of each part in a direction perpendicular to the grinding wheel axis and in the grinding wheel axis direction, a storage device having a plurality of grinding procedures, and a screen connected to the arithmetic device and capable of displaying graphics. NC grinding machine, comprising: a display device connected to the processing device; and means for inputting a dimension and a grinding procedure to the processing pattern, wherein data input for each processing pattern is combined into one processing data. In the data creation device for the, when the confirmation mode is specified, the arithmetic device, after displaying the work of the material dimensions on the screen, display the grindstone on the screen according to the input data, the work A data creating apparatus for an NC grinding machine, wherein a portion where the grinding stones overlap is erased from the screen. 2. The data creating apparatus for an NC grinding machine according to claim 1, wherein coordinates of the grinding wheels are displayed together.