JP3134026B2 - CAD / CAM equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a CAD / CAM apparatus for automatically generating NC data for centering a work.

[0002]

2. Description of the Related Art In the sinking electric discharge machining, as shown in FIG. 11, when the electrode 16 is brazed to the shank 51, a deviation occurs between the center of the shank 51 and the center of the electrode 16.
Further, when the work 17 is attached, a slight shift occurs from a predetermined position. Therefore, it is necessary to center the electrode and the work. The center of the electrode is measured by measuring the deviation between the center of the shank and the center of the electrode by bringing each surface of the electrode into contact with a reference sphere and adding the result to the correction data of the electrode.

As shown in FIG. 12, the center of the work is
The reference electrode 52 is brought into contact with each surface of the workpiece 17 along the path 53, and the deviation and the inclination are measured, and the deviation and the inclination are added to the setting of the work coordinates. The work is centered manually.

FIG. 13 is a configuration diagram showing an example of a conventional CAD / CAM device. Reference numeral 1 denotes an input device such as a mouse, a tablet, and a keyboard. An electrode measurement subprogram output unit 54 outputs an electrode measurement subprogram 55 for centering the electrode 16. The electrode measurement subprogram 55 is read in advance by the die sinking electric discharge machine 15. Reference numeral 4 denotes a processing definition unit for inputting processing information such as a processing position and electrical conditions. Reference numeral 5 denotes a processing information storage unit that stores the processing information input by the processing definition unit 4. Reference numeral 6 denotes a drawing unit for drawing the shape of the electrode 16 and the processed shape of the work 17. Reference numeral 7 denotes an electrode measurement position designation unit that designates a measurement position of the electrode for centering the electrode.

An NC data generator 59 automatically generates NC data 92 based on the processing information and the electrode measurement position information. The NC data 92 is the NC data 1 of the electrode measurement position information when the measurement position of the electrode is designated.
2 and NC data 13 of parts such as electrical condition information and processing position information. Reference numeral 10 denotes a tracing stylus setting unit for setting the size of the reference electrode 52 and the like. Reference numeral 14 denotes an NC data reader that reads the NC data 92 and the electrode measurement subprogram 55 into the die sinking electric discharge machine 15.

Next, the operation will be described. The operator outputs the electrode measurement subprogram 55 from the electrode measurement subprogram output unit 54, and outputs the NC data reader 1
4 is read into the die sinking electric discharge machine 15. In the machining definition part 4, the position where the die-sinking EDM is performed on the workpiece based on the mold drawing is designated, and the coordinates, depth,
Enter the electrode name, electrical conditions, swing allowance, and swing pattern, and select the electrode shape to be used. This is repeated for all processing positions. These pieces of processing information are stored in the processing information storage unit 5. An electrode shape is drawn by the drawing unit 6, and an electrode measurement position for centering is specified on the figure by the electrode measurement position specification unit 7. The NC data generator 59 generates NC data 92 based on the processing information and the electrode measurement position information.

An operator on the machine side reads the NC data reader 14
To read the NC data 92 into the die sinking electric discharge machine 15. Then, the electrode 16 is attached to the ATC of the processing machine, and the work 17 is fixed to the table. The work 17 is centered manually. The center of the electrode 16 is the NC data 9
2 is automatically performed by substituting the electrode measurement position information contained in 2 into a variable of the electrode measurement subprogram 55. Subsequently, die sinking electrical discharge machining is also performed automatically.

[0008]

The above conventional CAD / C
In the AM device, the work must be centered manually. Therefore, there is a problem that it takes time and is not suitable for continuous unmanned operation.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a CAD / CAM apparatus capable of automatically centering a work and enabling continuous unmanned operation.

[0010]

Means for Solving the Problems CA relating to the first aspect
The D / CAM device executes the centering of the work by the processing machine
And subprograms output means for workpiece measurement for outputting a sub-program for the workpiece measurement for the operator can be specified workpiece inspection position specifying means the measurement position of the workpiece for performing centering of the workpiece, the workpiece measuring For subpro
It is obtained by a workpiece centering for NC data production formation means for word <br/> generates NC data for the centering of the click output for passing information on the measuring position the designated grams.

[0011]

In the CAD / CAM apparatus according to the second aspect, the work graphic and its mounting jig and other peripheral objects are displayed on the screen and measured at the measurement position designated by the work measurement position designation means. And displaying the measurement path of the measuring element.

[0013]

According to the CAD / CAM device of the present invention, the work measurement is performed.
Fixed subprogram and NC data for work centering
Is output. Therefore, the processing machine that has received the data sets the position where the work is measured at the time of centering the work on the NC data.
Data to the work measurement subprogram,
The workpiece can be measured according to this . Therefore,
Work centering can be performed automatically and accurately.
In this case, continuous unmanned operation of the processing machine becomes possible. In addition, NC
Program and workpiece measurement subprogram and N for centering
Because the C data is a separate module,
Gram is the work measurement subprogram and core without change
You can change only the NC data for
The work measurement subprogram is used for centering without changing.
It is possible to change only the NC data.
Easy and flexible.

Preferably, the position at which the work is measured is specified either by specifying a work figure on the screen or by inputting coordinate values, or both.

At the time of measurement, for example, there are places where measurement is impossible or difficult with a complicated work shape. Therefore, by displaying the workpiece graphic and its mounting jig and other peripheral objects on the screen, displaying the tracing stylus at the specified measurement position and displaying the measurement path of the tracing stylus, the work shape and the mounting jig are displayed. A point that cannot be measured or is difficult to measure due to interference with a tool or the like can be discovered beforehand and changed.

[0016]

【Example】

Embodiment 1 FIG. FIG. 1 shows a CAD / CA according to an embodiment of the present invention.
It is a block diagram which shows M apparatus. Reference numeral 1 denotes an input device such as a mouse, a tablet, and a keyboard. 2 is an electrode measurement subprogram 55 for centering the electrode 16, and a work 1.
7 is a work / electrode measurement subprogram output unit that outputs a work measurement subprogram 3 for centering 7.
The workpiece measurement subprogram 3 and the electrode measurement subprogram 55 are read in advance by the die sinking electric discharge machine 15.

FIG. 2 shows a specific example of the work measurement subprogram 3. L7001 is a label number. T10 is
This indicates that electrode number 10 is used. For example, it shows that a reference electrode for measuring a workpiece is used. G53 sets the coordinate system. G31XH300YH301Z4
01P5 indicates that the position of the workpiece is measured using the reference electrode. That is, variables prepared in the storage device (not shown) of the sinker electric discharge machine 15, H300, H301,
This means that measurement is performed using the coordinate values set in H401. P5 represents speed. When all measurements are completed, return to the main program at G23. As described above, by setting a value to a variable and creating a program that calls a subprogram, automatic measurement is realized.

Referring back to FIG. 1, reference numeral 4 denotes a processing definition unit for inputting processing information such as a processing position and electrical conditions. Reference numeral 5 denotes a processing information storage unit that stores the processing information input by the processing definition unit 4. 6 is the shape of the electrode 16 and the work 1
This is a drawing unit for drawing the processing shape of No. 7. 7 is an electrode 16
This is an electrode measurement position specifying unit for specifying the measurement position of the electrode 16 for centering. Reference numeral 8 denotes a work measurement position designation unit for designating a measurement position of the work for centering the work.

9 is the processing information, electrode measurement position information,
An NC data generation unit that automatically generates NC data based on work measurement position information. The NC data 91 generated by the NC data generator 9 includes the NC data 11 of the work measurement position information portion when the work measurement position is specified and the electrode measurement position information when the electrode measurement position is specified. It includes the NC data 12 of the part and the NC data 13 of the part such as the electrical condition information and the processing position information.

As shown in FIG. 3, the generated NC data 91 includes a head label 49, NC data 11 for work measurement position information, NC data 12 for electrode measurement position information, and NC data 12 for machining position information. It comprises NC data 13 and an end code 50.

Returning to FIG. 1, reference numeral 10 denotes a tracing stylus setting unit for setting the size of the reference electrode 52 and the like. Reference numeral 14 denotes an NC data reader for reading the NC data into the die sinking electric discharge machine 15. The operator of the machine uses the data reader 14 to read the NC
The data 91 is read into the sinking electric discharge machine 15. And
The formed electrode 16 is attached to the ATC of the sinker electric discharge machine 15, and the work 17 is fixed to the table.

Next, the operation will be described. FIG.
9 is a flowchart illustrating a procedure for generating C data 91.
The operator draws the shape of the electrode in the drawing unit 6 (S1).
8) The measurement position of the electrode is specified on the figure by using the electrode measurement position specification section 7 (S19). The designated electrode shape is registered (S20). This is performed for all the electrodes that use this (S21). In the same manner as described above, the work shape is drawn by the drawing unit 6 (S22), and the work measurement position designation unit 9 designates the work measurement position on the graphic (S23). In the machining definition part 4, the position of the sinking electric discharge machining is designated, and the coordinates, depth, electrode name, electric condition, swing margin and swing pattern of the center are inputted (S24), and the electrode shape to be used is determined. Select (S
25). This is repeated for all machining positions (S2
6). The processing information and the like are stored in the processing information storage unit 5.

An instruction to start generating NC data is issued (S2).
7), the NC data generation unit 9 calls the work measurement subprogram 3 based on the work measurement position information and generates the NC data 11 of the work measurement position information part (S2).
8), the electrode measurement subprogram 3 is called based on the electrode measurement position information to generate NC data 12 of the work measurement position information part (S29), and the NC of the machining position information part is generated.
The data 13 is generated (S30).

FIG. 5 is a specific example of work measurement position information. The variables such as H300, H301,... Provided in the storage device (not shown) of the die sinking electric discharge machine 15 are substituted with the coordinate values of the work measurement position designated by the work measurement position designation unit 9. Is shown. Finally, G22L7001 indicates that the work measurement subprogram 3 that has been read in advance is called.

Since the CAD / CAM device is configured as described above, once the NC data is executed,
Workpiece centering, electrode centering and Die-sinker EDM can be performed automatically. Further, if the work is exchanged using an AWC or a robot, continuous unmanned operation becomes possible.

Embodiment 2 FIG. FIG. 6 is a flowchart illustrating a designation procedure in the work measurement position designation unit according to the second embodiment of the present invention. In the previous example, the work measurement position was specified on the screen.
Both of the methods specified in the list can be selected. When drawing a work drawing and preparing a work of that size, the former is better. Measure the size of the existing work first.
When NC data is created using the data, the latter is better.

First, a method for designating a work measurement position is selected (S31). To specify on the screen, select the "Screen specification input" menu. As shown in FIG. 7A, reference numeral 40 denotes a menu section. Click on the menu displayed in this menu section 40 and click "Screen designation input".
Make a selection. Reference numeral 41 denotes a message portion, on which instructions to the operator are displayed. Next, the operator:
A work measurement reference position is specified (S32). As shown in FIG. 7B, for example, the work center 42 is designated. Next, a required number of workpiece measurement positions are designated (S3).
3). As shown in FIG. 7C, for example, the first work measurement position 43 is specified. When all the work measurement positions have been designated, the flow proceeds to S38 (S34). FIG. 7D shows a screen on which the last work measurement position is specified.

When inputting on a table, the menu of "Table input" is selected. As shown in FIG. 8A, reference numeral 44 denotes a menu section. Reference numeral 45 denotes a message part, on which instructions to the operator are displayed. The menu displayed on the menu section 44 is clicked. When the "table input" menu is selected, a table 46 appears on the screen as shown in FIG. As shown in FIG. 9A, the table 46 displays a guide diagram on the left side and menus 1 to 9 corresponding to the guide diagram on the right side. And
In this table 46, the first to ninth menus are clicked with a mouse or the like to designate a work measurement reference position (S3).
5). For example, when the menu “1. Center” is clicked, the work measurement reference position is designated as “Center”.

Next, when "1: Execute" is clicked, the table 46 is closed. Then, a table 47 appears on the screen as shown in FIG. In this table 47, the work measurement position is specified (S36). This table 47 includes (b) in FIG.
As shown in FIG. 7, a guide diagram is displayed on the left side, and an input field for inputting the coordinate value of the work measurement position from the keyboard with reference to the guide diagram is displayed on the right side. A coordinate value is input in this input field to specify a work measurement position. Next, when "1: end" is clicked, the table 47 is closed. When all the work measurement positions are specified, the process proceeds to S38 (S37).

In S38, it is confirmed whether or not the measurement can be performed correctly at the specified work measurement position. At that time, FIG.
As shown at 0, a reference electrode is displayed at the designated position. For example, at the measurement position 48, the contact between the reference electrode and the work becomes unstable. At the measurement position 49, it interferes with the mounting jig. At the measurement position 50, measurement is impossible because the reference electrode is not in contact with the workpiece. If a measurement position that cannot be measured or is difficult to measure is found, the measurement position is changed.
Although not shown, the measurement path of the tracing stylus may be displayed to find a point that cannot be measured or is difficult to measure due to interference with a work, a mounting jig, or the like, and may change the point.

If the measurement can be correctly performed at the specified work measurement position, the designation of the work measurement position is terminated, and if not, the flow returns to S31 (S39). As described above, the designation of the work measurement position can be selected on the screen or in the list as appropriate.

[0032]

According to the CAD / CAM apparatus of the present invention, the work for centering the work can be performed automatically and accurately. Therefore, continuous unmanned operation becomes possible.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a CAD / CAM device according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a specific example of a work measurement subprogram of FIG. 1;

FIG. 3 is a configuration diagram showing NC data generated by an NC data generation unit.

FIG. 4 is a flowchart showing a procedure for generating NC data in FIG. 3;

FIG. 5 is an explanatory diagram of a specific example of work measurement position information.

FIG. 6 is a flowchart illustrating a designation procedure in a work measurement position designation unit according to the second embodiment of the present invention;

FIG. 7 is an explanatory diagram showing a screen when a work measurement position is specified on the screen.

FIG. 8 is an explanatory diagram showing a screen when a work measurement position is input on a table.

FIG. 9 is an explanatory diagram of a specific example of the table in FIG. 8;

FIG. 10 is an explanatory diagram showing a state in which a reference electrode is displayed at a measurement position designated in S38.

FIG. 11 is an explanatory diagram showing a general electrode shift.

FIG. 12 is an explanatory diagram showing a general work measurement procedure.

FIG. 13 is a configuration diagram showing an example of a conventional CAD / CAM device.

[Explanation of symbols]

Reference Signs List 1 Input device 2 Work / electrode measurement subprogram output unit 3 Work measurement subprogram 4 Machining definition unit 5 Machining information storage unit 6 Drawing unit 7 Electrode measurement position designation unit 8 Work measurement position designation unit 9 NC data generation unit 10 Measurement Sub-setting unit 11, 12, 13 NC data 15 Die-sinker EDM 16 Electrode 17 Work

Claims (2)

(57) [Claims] 1. A for executing to centering of the workpiece in machine
Work measurement output subprogram for work measurement
And subprograms output means, wherein the operator can specify work measuring position specifying means the measurement position of the workpiece for performing centering of the work, the sub-program for the workpiece measurement
CA characterized by comprising a workpiece centering for NC data production formation means for generating an NC data output for centering of the workpiece to pass information of the specified measurement position to arm
D / CAM device. 2. A work figure, a jig for mounting the work figure, and other peripheral objects are displayed on a screen, a tracing stylus is displayed at a measurement position designated by the work measurement position designation means, and a measurement path of the tracing stylus is displayed. The CAD / CAM device according to claim 1, wherein