JPH0480803A - Automatic programming device - Google Patents

Abstract

PURPOSE:To facilitate the correction of a shape at an optional point by correcting partly the machining point data based on the displaced variable obtained from the shape correction data inputted from an input part. CONSTITUTION:The partial correction is desired to the shape of a machined work, an input part 5 inputs the coordinate value of the shape correction point, a corrected variable of the coordinate value, a coefficient that prescribes a shape correction range, etc. Then a CPU 1 reads the machining point data out of a machining point data file and corrects partly the machining point data based on the shape correction data. That is, a displaced variable is obtained based on the coordinate value of the shape correction point. Then the machining point data is partly corrected based on the variable.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic programming device that automatically obtains numerical control data (hereinafter referred to as NC data) from input shape specifying data. For example, model processing machine,
Suitable for creating NC data for numerically controlling mold processing machines, wooden mold processing machines, etc.

[Background technology]

In a conventional automatic programming device, for example, when creating NC data for machining a complex curved surface, processing is performed in accordance with the procedure shown in FIG.

First, when the shape identification data of the workpiece (in this case, pre-point data on the machining surface of the workpiece) is input, multiple machining point data, that is, multiple machining point coordinate values and their respective coordinate values, are generated based on the input data. Calculate the normal vector at ,
These machining point data are stored in a machining point data file.

Next, when machining condition data such as tool diameter, heel angle, spindle rotation speed, feed rate, etc. are input, intermediate data is generated from these machining condition data and machining point data stored in the machining data file. is calculated, and based on this intermediate data, post-processor processing specific to each machine is performed and the NC
Calculate the data and store it in the NC data file. Note that the NC data stored in the NC data file is then output to the outside when an output command is given.

Therefore, if the NC data stored in the NC data file is input to the NC device using a floppy disk, NC tape, or communication line as a medium and the NC processing machine is actually numerically controlled, the workpiece will be automatically processed into the specified shape. I can do something.

By the way, in model processing machines, mold processing machines, wooden mold processing machines, etc., it is often desired to partially correct the shape of the workpiece after actually processing the workpiece according to the above-described procedure. For example, there may be cases where it is desired to carve or inflate a part of the workpiece.

In such cases, traditional automatic procraming devices
After correcting the input data (temae data) corresponding to the part to be corrected, all the temae data including the corrected temae data are input again. Then, the process shown in FIG. 8 is executed from the beginning to create NC data.

[Problem to be solved by the invention]

In conventional automatic programming devices, as mentioned above,
If you want to partially correct the shape of the workpiece, you must correct the input data (temae data) that corresponds to the part you want to correct, and then re-enter all the temae data, including the corrected temae data. The disadvantage is that the operation is troublesome and time consuming.

Moreover, since the same processing is performed from the beginning for all input data that is input again, that is, processing is performed to calculate machining point data from the input data that has not been corrected, so it takes a long processing time. There is. In other words, the time required for correction may be as long as the time required for initial data creation, or even longer.

Another disadvantage is that the part whose shape is desired to be corrected is limited to the part of the input data. In other words, if the part where you want to modify the shape is far from the part of the human input data, you will not be able to understand how much correction is necessary, so in the end the shape will be limited to the part where you want to modify or the part of the input data.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an automatic programming device that overcomes these conventional drawbacks and can easily and quickly modify the shape at any point.

[Means to solve the problem]

Therefore, when modifying the shape, the present invention does not modify the input data as in the conventional method, but only a part of the machining point data, thereby making it possible to quickly and easily modify the shape at any point. This is how it was done.

That is, the automatic progeraminking device of the present invention uses shape identification data, processing condition data, coordinate values of arbitrary shape correction points,
an input section for inputting shape modification data consisting of coefficients defining the amount of modification at the shape modification point coordinate values and the range of shape modification; a storage section having a machining point data file and a numerical control data file; and an arithmetic processing section. The arithmetic processing unit calculates a plurality of processing point coordinate values and a normal hector at each of the coordinate values based on the shape specifying data input from the input unit, and calculates the processing point data by using the processing point data. a first processing means for storing in a point data file; calculating numerical control data from the machining point data stored in the machining point data file and machining condition data inputted from the human power section; A second processing means for storing the data in the numerical control data file, and determining the amount of displacement within the range in which the shape modification is applied based on the shape modification data inputted from the input section, and storing the displacement amount in the processing point data file according to this displacement amount. and third processing means for modifying a part of the stored machining point data.

[For production]

When shape specification data and machining condition data are input from the input section, machining point coordinate values and normal vectors at each coordinate value are determined based on the shape specification data, and these machining point data are stored in a machining point file. Ru.

Subsequently, numerical control data is obtained from the machining point data stored in the machining point file and the machining condition data input from the input section, and is stored in the numerical control data file.

For example, intermediate data is calculated from machining point data and machining condition data, and based on this, numerical control data is determined by post-processor processing unique to each machine and stored in a numerical control data file. Therefore, by inputting the numerical control data stored in this numerical control data file into the NC device and numerically controlling the NO machining machine, the workpiece can be machined based on the numerical control data.

Here, when the workpiece is actually machined, if it is desired to partially correct the shape after processing, shape correction data is inputted from the input section. Then, based on the shape correction data input from the input section, the amount of displacement within the range of shape correction is determined.
A part of the machining point data stored in the machining point data file is corrected according to the amount of displacement.

Therefore, if you want to partially modify the shape, the coordinates of any point,
The modification operation is simple because it is only necessary to input shape modification data consisting of coefficients defining the amount of modification in the coordinate values and the range to which the shape modification is applied. Furthermore, since only part of the machining point data is corrected, the processing time can be reduced compared to the conventional method.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 shows the circuit configuration of this embodiment. In the figure, l is a CPU. A ROM 3 storing a processing program, a RAM 4 serving as a storage section storing data, an input section 5, a CRT 6, and an output section 7 are connected to the CPLTI through a bus 2, respectively.

As shown in FIG. 2, the RAM 4 includes a machining point data file 4A that stores a plurality of machining point coordinate values and normal vectors at each machining point coordinate value, and
An NC data file 4B for storing data is also provided.

The input section 5 is for inputting various data and command information, and is composed of a keyboard, a card reader, and the like. Here, the various data and command information include shape identification data such as fish school data and function surface data on the machining surface of the workpiece, tool information (tool diameter, tool orientation, heel angle, spindle rotation speed, meli speed, etc.), etc. processing condition data, shape correction data, output range specification data, output command information, etc.

The shape modification data is a coefficient that defines the coordinate value of an arbitrary point whose shape is to be modified, the amount of modification in the coordinate value of the shape modification point, and the range to which the shape modification is applied. for example,
When modifying part of the curve marked ■ in Figure 3 to the curve marked ■,
When the amount of correction in the Y direction at the coordinates (x, y) of an arbitrary point P on the curve is d, the amount of displacement Δ is given by Δ=aL3+bL2+cL+d−-(1), so the shape correction coordinate value P ( x, y), correction amount d, and coefficients a, b, c, and L.

The output range specification data is stored in the NC data file 4.
This specifies the output range of the NC data stored in B. For example, in the case of three axes, as shown in Figure 4 (A),
This is data for specifying an arbitrary rectangular shape having arbitrary angles on the axes in the -Y, Y-Z, and Z-X planes. Furthermore, in the case of five axes, as shown in FIG. 4(B), this is data for specifying an arbitrary box shape having arbitrary angles on the axes in the X-Y-Z coordinate system.

Further, the output unit 7 outputs the N.sub.N stored in the NC data file 4B based on the output command from the CPUI.
It is for outputting C data to the outside, and is composed of, for example, an online-connected interface circuit, a magnetic tape cartridge, a tape puncher, a printer, etc.

Further, the CPUI executes the processing shown in the flowcharts shown in FIGS. 5 and 6 according to the processing program stored in the ROM 3. Here, CPUI and ROM
3 constitutes the following first processing means, second processing means, and third processing means.

The first processing means calculates a plurality of machining point coordinate values and a normal vector at each coordinate value based on the shape specifying data input from the input section 5, and converts these machining point data into the machining point data. Execute processing to store in file 4A.

The second processing means processes the processing point data file 4A.
NC data is obtained from the machining point data stored in the input section 5 and the machining condition data input from the input section 5, and processing is executed to store it in the NC data file 4B.

The third processing means calculates a displacement amount Δ within the range in which the shape correction is applied based on the shape correction data inputted from the input section 5, and stores the displacement amount Δ in the machining point data file 4A according to this displacement amount Δ. Execute processing to modify part of the stored machining point data.

Next, the operation of this embodiment will be explained with reference to the flowcharts of FIGS. 5 and 6.

In creating the NC data, first, shape specifying data, that is, point preparation data on the machining curved surface of the workpiece is inputted from the input unit 5.

Then, according to the flowchart shown in FIG. 5, when the CPU recognizes that the input data is shape specifying data in step (hereinafter abbreviated as ST) 1, it proceeds to ST2 and performs multiple processing based on the shape specifying data. After calculating the point data, that is, the plurality of machining point coordinate values and the normal vector at each machining point coordinate value, the process proceeds to ST3 and stores the machining point data in the machining point data file 4A.

Next, in ST4, on the condition that machining condition data, that is, tool diameter, tool orientation, heel angle, etc., have been input from the input section 5, the process advances to ST5 and the machining points stored in the machining point data file 4A are input. After calculating intermediate data from the data and processing condition data, and performing post-processor processing based on the intermediate data to calculate NC data,
Proceed to ST6 and store the NC data in the NC data file 4B.

After the NC data is stored in the NC data file 4B in this manner, when output command information (the entirety) is commanded from the input unit 5, the CPUI performs processing according to the flowchart shown in FIG. That is, when it is recognized at 5T21 that it is the entire output command, the process advances to 5T22 and the NC data stored in the NC data file 4B is output from the output unit 7.

Therefore, by inputting the NC data output from the output section 7 into the NC device and numerically controlling the NC processing machine, the workpiece can be processed. Here, if you want to partially correct the shape of the workpiece after processing, input the shape correction data from the input section 5, that is, the shape correction point coordinate value P (x, y), the correction amount d at the shape correction point coordinate value, and the shape correction. Input coefficients a, b, c, L, etc. that define the range in which the effect is applied.

Then, the CPU
When the TII recognizes that the shape correction data has been input, the process advances to 5T12 and checks whether machining point data is stored in the machining point data file 4A. If the machining point data is not stored in the machining point data file 4A, it is treated as an error.

If the machining point data is stored in the machining point data file 4A, the process advances to 5T13, where the machining point data is read from the machining point data file 4A, and part of the machining point data is modified based on the shape correction data. In other words, the above ( 1) Calculate the equation to find the displacement Δ with respect to the coordinate value P (x, y) of the shape correction point, and correct a part of the machining point data according to this displacement Δ. After that, proceed to ST3 and store these machining point data in the machining point data file 4A, and then proceed to ST4.
5. Perform the process in 6.

Here, if it is desired to output only the corrected data range, the output range designation data is input from the input unit 5, and then the output command information (part) is input.

The CPU then executes step 5 of the flowchart shown in FIG.
When recognizing that it is a partial output command at T31, 5T3
Proceed to step 2 and proceed to NC stored in NC data file 4B.
NC data within a specified range from among the data is output from the output section 7. As a result, the workpiece can be machined again by inputting part of the NC data output from the output section 7 into the NC device and numerically controlling the NC processing machine.

Therefore, according to this embodiment, even if you want to partially modify the shape of the workpiece after actually machining the workpiece, you only need to input the shape modification data from the input section 5, so that the modification time is much easier than in the past. Easy input operations.

Moreover, as shape correction data, the coordinate value P of an arbitrary point is
(x, y), the amount of correction d in the coordinate values, and the coefficient a that defines the range to which the shape correction is applied.

By inputting b, c, and L, the coordinate value P (x.

Since the shape can be smoothly modified based on y), the shape can be modified at any point with a simple input operation.

Furthermore, based on the input shape correction data, only a part of the machining point data stored in the machining point data file 4A is corrected. Since it is not necessary to calculate machining point data for the input data, processing time can be shortened.

Furthermore, since the output range of the NC data stored in the NC data file 4B can be specified, it is also possible to output only the modified portion of the NC data.

In the above embodiment, at 5T13 in FIG. 5, after a part of the machining point data is corrected based on the shape correction data, the processing in ST3 to ST6 is executed, for example, in step 5T13 in FIG. The processing shown in the flowchart may also be performed.

After processing in 5T13, the process advances to 5T14, stores these machining point data in the machining point data file 4A, then advances to 5T15, reads the machining point data from the machining point data file 4A, and stores the machining point data after correction. Intermediate data is calculated from the machining condition data, post-processor processing is performed based on the intermediate data, and NC data is calculated.In other words, only the NC data of the corrected machining point data is calculated, and these are saved in the NC data file 4B. It is designed to be stored in . Therefore, in this case, it is not necessary to perform the calculation process again on the NC data calculated from the uncorrected machining point data and machining condition data, so that the processing time can be shortened.

In the above embodiment, the modified machining point data is updated in the machining point data file 4A that stores the unmodified machining point data, or the modified data is stored separately. A second machining point data file is provided,
Corrected machining point data may be stored in this. In this way, it is possible to save the shape specifying data that was input first.

〔Effect of the invention〕

As described above, it is an object of the present invention to provide an automatic programming device that can easily and quickly modify a shape at any point, since part of the machining point data is modified when shape modification data is input. I can do it.

[Brief explanation of drawings]

Figures 1 to 6 show one embodiment of the present invention.
The figure is a block diagram showing the overall circuit configuration, and Figure 2 is the RAM.
Figure 3 is a diagram to explain the shape correction process, Figure 4 is a diagram to explain how to specify the output range of NC data, and Figures 5 and 6 are flowcharts. be. FIG. 7 is a flowchart showing another embodiment of the present invention. FIG. 8 is a flowchart of a conventional automatic programming device. 1.3...CPU and ROM (arithmetic processing unit), 4.
...RAM (storage unit), 4A...machining point data file, 4B...NC data file, 5...input section.

Claims (1)

[Claims] (1) an input unit for inputting shape correction data consisting of shape specification data, processing condition data, arbitrary shape correction point coordinate values, a correction amount at the shape correction point coordinate values, and a coefficient defining a range in which shape correction is applied; A storage unit having a machining point data file and a numerical control data file, and an arithmetic processing unit, wherein the arithmetic processing unit calculates a plurality of machining point coordinate values and each of them based on the shape specifying data input from the input unit. a first processing means for determining a normal vector at a coordinate value and storing these machining point data in the machining point data file; a second processing means for obtaining numerical control data from the processing condition data and storing the numerical control data in the numerical control data file; and a range in which the shape correction is applied based on the shape correction data input from the input section. and third processing means for determining a displacement amount within the machining point data file and modifying a part of the machining point data stored in the machining point data file according to this displacement amount.