JP2002132314A - Method and device for electronic profiling machining - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and a device for electronic profiling machining which machine a large-sized work in a short time with high precision by completing the processing from NC program generation to the end of machining in a short time. SOLUTION: Three-dimensional electronic data on the work 4 in the form of a product and machining definition data on a tool diameter, a revolving speed, a feed speed, a pick feed, etc., are inputted and the work is machined while processing paths are sequentially computed from the data.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a numerical control (hereinafter, referred to as NC) processing method and apparatus for processing a three-dimensional shape of an object, and more particularly, to an electronic copying method and apparatus for performing electronic processing.

[0002]

2. Description of the Related Art When machining a three-dimensional curved surface shape of an object, three-dimensional shape data and machining definition data such as a tool diameter and a number of revolutions are input to an NC machine tool, and an NC program (machining path) is calculated. By the calculated NC program,
The NC machine tool is operated to process a three-dimensional curved surface shape.

[0003]

However, in the above-described method, when a large-sized work (object to be processed) having a diameter of, for example, 1 m is machined with high accuracy with a shape error of 10 μm or the like, an NC machining is required. It takes a lot of time (for example, 17 hours) to calculate the NC program (machining path) by the machine,
It takes a long time to finish processing.

[0004] Therefore, the present invention provides an electronic copying method and apparatus capable of executing an NC program from the end of machining to the end of machining in a short time and machining a large workpiece in a short time with high accuracy. Aim.

[0005]

In order to achieve the above-mentioned object, the invention according to claim 1 is directed to a method of manufacturing a workpiece as a product.
It is characterized by inputting dimensional shape electronic data and machining definition data such as tool diameter, rotation speed, feed speed and pick feed, and performing machining while sequentially calculating machining paths from these data. According to the present invention, it is possible to shorten the time from the creation of the NC program to the end of the machining by performing the calculation of the path and the machining simultaneously instead of separately.

A second aspect of the present invention is characterized in that, after input of the processing definition data, before the processing is performed, only the processing time is calculated separately from the path calculation for the actual processing. According to the present invention, a machining time for machining definition data such as a tool, a rotation speed, a feed, a pick feed, and a path direction can be known before machining. Therefore, the processing time can be further reduced by trial and error of the processing definition data in advance. In addition, since the calculation of the processing time does not require the accuracy as in actual processing, the calculation time is short.

A third aspect of the invention is characterized in that after input of the processing definition data and before the processing is performed, the tool interference and the uncut portion are calculated separately from the path calculation for the actual processing. According to the present invention, a mistake in tool selection can be found before machining, so that machining errors can be prevented and the time for substitute machining can be reduced. Further, the calculation of the tool interference and the uncut portion does not require the accuracy as in actual machining, so that the calculation time is short.

According to a fourth aspect of the present invention, machining definition data is re-entered during machining, and paths subsequent to the path being machined at the time of input are sequentially calculated from the three-dimensional electronic data and the re-input machining definition data. It is characterized in that processing is performed while performing.

According to the present invention, the machining definition can be changed one after another while checking the actual machining state.
It is possible to select a processing definition most suitable for the rigidity of the tool and the work, the sharpness of the blade, and the like. Therefore, machining time is shortened and tool life is extended.

According to a fifth aspect of the present invention, the processing is performed by inputting the three-dimensional shape electronic data of the material, and sequentially calculating the rough machining path from the three-dimensional material electronic data, the product three-dimensional shape electronic data and the processing definition data. It is characterized by the following. According to the present invention, even in the rough machining, the time from the creation of the NC program to the end of the machining can be reduced.

The invention of claim 6 is characterized in that the process definition data is collectively created off-line. According to the present invention, when processing is complicated and it takes time to generate the processing definition data, another person can generate the processing definition data at a place other than the processing apparatus, so that the time from the creation of the NC program to the end of the processing is reduced. can do.

The invention according to claim 7 is characterized in that the calculation of only the processing time is performed off-line from the three-dimensional shape electronic data and the processing definition data in addition to the path calculation for the actual processing.

According to the present invention, a machining time for machining definition data such as a tool, a rotation speed, a feed, a pick feed, a direction of a path, etc. can be known before machining in a machine other than the machine.
Therefore, the processing time can be reduced by trial and error of the processing definition data in advance.

An eighth aspect of the present invention is characterized in that a tool interference and an uncut portion are calculated off-line from three-dimensional shape electronic data and machining definition data separately from a path calculation for actual machining. According to the present invention, a mistake in tool selection can be found before machining, even in a machine other than a machining machine.
Processing errors can be prevented, and the time for substitute processing can be reduced.

According to a ninth aspect of the present invention, the input material three-dimensional shape electronic data, the product three-dimensional shape electronic data and the processing definition data are stored, and the data stored by the newly input data at the next and subsequent processing. Is used by partially changing it.

According to the present invention, since the shape data and the process definition data which have been optimized and have a working record can be used for the similar work and the same tool in the next and subsequent times, the working time is shortened. If the processing definition data can be used, no input is required, and the time can be shortened.

According to a tenth aspect of the present invention, a three-dimensional shape electronic data as a product of a workpiece and processing definition data such as a tool diameter, a rotation speed, a feed rate, and a pick feed are inputted, and a machining path on the workpiece is input. And a processing machine that receives the output of the calculation control device and performs machining on the object to be processed.

According to the electronic copying apparatus of the present invention,
When machining a large workpiece with high precision, the time from the creation of the NC program to the end of machining can be reduced. Note that the calculation control device is often a personal computer,
The processing machine is an NC machine tool.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the drawings. That is, the electronic copying apparatus according to the present embodiment includes an NC machine tool 1 and a personal computer 2 connected thereto, as shown in FIG. A tool 3 is mounted on the NC machine tool 1, and a workpiece 4 is cut by the tool 3. The personal computer 2 has an input unit 5 for receiving data and instructions from the outside, a storage unit 6 for storing calculation formulas and various data, and a calculation unit 7 for calculating various processing conditions and processing amounts.

In the electronic copying apparatus having such a configuration, the three-dimensional shape electronic data and the processing definition data are input to the personal computer 2. The processing definition data is a tool diameter, a rotation speed, a feed speed, and a pick feed. A machining path is calculated from the input three-dimensional shape electronic data and the machining definition data. The personal computer 2 and the NC machine tool 1 communicate with each other. When the first pass is calculated by the personal computer 2, the NC machine tool 1 processes the work 4 (first pass). The second and subsequent passes are calculated. If the processing of the first pass is completed and the calculation of the second pass is completed, the second pass is processed. Thereafter, processing is sequentially performed in this manner to process a three-dimensional curved surface shape.

As described above, in the electronic copying method according to the present embodiment, the path calculation and the machining are not performed separately but at the same time, so that the time from the creation of the NC program to the end of the processing can be reduced.

In the electronic copying method according to the second embodiment of the present invention, as shown in FIG. 2, after inputting the processing definition data, the path length is calculated by a simple geometric calculation different from the path calculation. The machining time is calculated and predicted by dividing the path length by the feed speed of the machining definition data. Since the actual path calculation is not performed, the calculation ends instantly.

As described above, in the electronic copying method according to the present embodiment, the processing time can be shortened by performing trial and error in determining the processing definition data before calculating the path and performing the actual processing.

Next, as shown in FIG. 3, in the electronic copying machining method according to the third embodiment of the present invention, after inputting the machining definition data, the tool interference 8 and the uncut portion 9 have a lower accuracy different from the path calculation. Is calculated. The calculation is completed instantly because of the calculation with low accuracy. In this embodiment, a mistake in tool selection can be found before actual machining, and machining errors can be prevented, and the time for substitute machining can be reduced.

According to the fourth embodiment of the present invention, when the machining definition is changed during the first pass machining in the electronic copying machining method of the first embodiment, the second pass passes through the newly changed machining. It is calculated and processed according to the definition.

If the machining definition is changed during machining as described above, the content is reflected from the next pass, so that the machining definition can be changed while confirming the actual machining state. It is possible to select the processing definition most suitable for rigidity and tool sharpness. Therefore, the machining time can be shortened and the tool life can be extended.

Next, as shown in FIG. 4, the method of processing an electronic copy according to the fifth embodiment of the present invention is as follows.
3D shape data of the product 4b and the tool diameter, the number of revolutions, the feed, the axial cut 11, and the radial cut 12 as the machining definition, and Similarly, the path is calculated sequentially and the work 4 is processed.

As a result, not only the pass calculation and the machining are performed separately for the rough machining but also for the finishing,
Since it is performed simultaneously, the time from the creation of the NC program to the end of the machining can be reduced.

Next, in the electronic copying method according to the sixth embodiment of the present invention, the connection between the personal computer 2 and the NC machine tool 1 is cut off in the first embodiment, Data and machining definition data are input.

In this embodiment, when processing is complicated and it takes time to generate the processing definition data, another person can generate the processing definition data except for the processing apparatus.
The time from C program creation to machining can be reduced.

Next, in the electronic copying method according to the seventh embodiment of the present invention, the personal computer 2 is disconnected from the NC machine tool 1 in the first embodiment, and the personal computer 2 alone calculates the processing time. Is what you do.

In this embodiment, the machining time corresponding to the machining definition data (tool, number of revolutions, feed, pick feed) can be known before machining other than the machine. Therefore, the processing time can be reduced by performing trial and error on the processing definition data in advance.

Next, in the electronic copying method according to the eighth embodiment of the present invention, the connection between the personal computer 2 and the NC machine tool 1 in the first embodiment is cut off, The calculation for detecting the remaining 9 is performed. In this embodiment, a mistake in tool selection or the like can be found before machining by a machine other than the machine, so that machining errors can be prevented and the time for substitute machining can be shortened.

Next, in the electronic copying method according to the ninth embodiment of the present invention, the input three-dimensional shape electronic data and the processing definition data are stored as files in the first embodiment. Is performed, the data is partially changed by inputting new data.

In this embodiment, since the shape having the machining results and the optimized machining definition data can be used for the next similar work and the same tool, the machining time can be reduced. If the processing definition data can be used, no input is required, and the time can be shortened.

[0036]

According to the electronic copying method and apparatus of the present invention, when a large workpiece is machined with high precision, N
The time from the creation of the C program to the end of machining can be reduced.

[Brief description of the drawings]

FIG. 1 is a system conceptual diagram showing an electronic copying method and apparatus according to an embodiment of the present invention.

FIGS. 2A and 2B are conceptual diagrams of a processing time calculation method in an electronic copying processing method according to an embodiment of the present invention, wherein FIG. 2A is a process flow chart, and FIG.

FIG. 3 is a cross-sectional view of a workpiece showing tool interference and uncut portions.

FIG. 4 is a perspective view showing an axial cut and a radial cut in a processing definition.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... NC machine tool, 2 ... PC, 3 ... Tool, 4 ... Work, 4a ... Material, 4b ... Product, 5 ... Input unit, 6 ... Storage unit, 7 ... Calculation unit, 8 ... Tool interference, 9 ... , 11 ... axial cut, 12 ... radial cut.

Claims (10)

[Claims] 1. A three-dimensional shape electronic data as a product of a workpiece to be processed and processing definition data such as a tool diameter, a rotation speed, a feed rate, and a pick feed are input, and a processing path is sequentially calculated from these data. An electronic copying method characterized by performing machining. 2. The electronic copying method according to claim 1, wherein, after input of the processing definition data, before the processing is performed, only the processing time is calculated separately from the path calculation for the actual processing. 3. The electronic copying method according to claim 1, wherein after the input of the processing definition data, before the processing is performed, the tool interference and the uncut portion are calculated separately from the path calculation for the actual processing. . 4. Re-inputting the processing definition data during the processing,
2. The electronic profile processing method according to claim 1, wherein the processing is performed while sequentially calculating a path subsequent to the path being processed at the time of input from the three-dimensional shape electronic data and the re-input processing definition data. 5. Inputting three-dimensional shape electronic data of a material,
2. The method according to claim 1, wherein the machining is performed while sequentially calculating a rough machining path from the material three-dimensional shape electronic data, the product three-dimensional shape electronic data and the machining definition data. 6. The electronic copying processing method according to claim 1, wherein the processing definition data is collectively created off-line. 7. The method according to claim 1, wherein the calculation of only the processing time is performed off-line from the three-dimensional electronic data and the processing definition data, separately from the path calculation for the actual processing. 8. In addition to the path calculation for actual machining, 3
The method according to claim 1, wherein the tool interference and the uncut portion are calculated off-line from the three-dimensional shape electronic data and the processing definition data. 9. The input material three-dimensional shape electronic data, product three-dimensional shape electronic data and processing definition data are stored,
2. The electronic copying method according to claim 1, wherein in the subsequent processing, data stored by the newly input data is partially changed and used. 10. A three-dimensional shape electronic data as a product of a workpiece and processing definition data such as a tool diameter, a rotation speed, a feed rate, and a pick feed are input, and a processing path on the workpiece is calculated and output. An electronic copying machine, comprising: a calculation control device; and a processing machine to which an output of the calculation control device is input and which performs machining on the object to be processed.