JPS58219608A - Nc program generation system - Google Patents

Abstract

PURPOSE:To generate an NC program for realizing a desired shape faithfully by generating NC data on a simple part previously and NC data on the part of a complicated shape through copying operation, and putting both data together adequately. CONSTITUTION:A stylus STR is moved through copying operation from a start position (a) along straight lines S1 and S2 and when it reaches a point (b), a comparison part 6c outputs a coincidence signal CIN to input 1 from a synthesizing order storage part 6b to an NC program generation part 4. The generation part 4 reads the 1st NC data A out of a memory 3 and stores it in the head address of a memory 5. The signal CIN is inputted to a read control part 6b as well, so tha coordinates of a point (c) are read out of a register 6a hereafter as a substitute for the coordinates of the point (b) and inputted to the comparison part 6c. Simultaneously, an NC data generating circuit 2 generates NC data by using position data P and stores it. When the data P reaches the point (c), the signal CIN is generated and 0 is inputted from the storage part 6d to the generation part 4 and then NC data B is stored in the memory 5; and the operation is carried on similarly.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a No. program creation method, and particularly to a No. program creation method for creating a No. program by detecting the locus of a copying motion.

When machining a workpiece with a NO machine tool, a No program (part program) for machining is required.

Such No. 1 program can be created relatively easily by referring to design drawings for simple shapes such as circles or straight lines, but it is difficult to create such a program when machining a fairly complex shape. For this reason, a method has been proposed in which a model is created, the stylus is moved along the model while the stylus is applied to the model, the position of the stylus is detected at the same time, and a No. program is created using the body position information. There is.

This proposed method is advantageous in that complex shaped parts can be easily converted into No data. but,
According to this method, shape parts such as straight lines and circular arcs that can be easily converted into No. data without a copying operation are also converted into No. data by the scanning operation, so No. data that is slightly different from the desired shape is created. Ru. This is due to scratches on the surface of the model, digging into the copying control book, etc.

In FIG. 1, the dotted line is the locus of the (W) movement, and the solid line is the model shape, and in the straight line portions a, 5, the tracing locus does not exactly lie on the straight fl&, 8., but is slightly deviated.

Therefore, the present invention has the advantage that the final desired shape can be complicated or simple.
The purpose of the present invention is to provide a No. program creation method that can relatively easily create a No. program even in the case of a mixture of different shapes and an existing L5, and can also create a No. program that faithfully represents a desired shape. shall be.

That is, in the present invention, No. data is created in advance for a shape part for which No. data can be easily created, such as a single arc of a straight line, and stored in a memory, while for a complicated shape part, No. data is generated by a copying operation.

The data is created, and the No. data created by this copying operation and the No. data stored in the memo 13K will now be described in detail with reference to the drawings.

FIG. 2 is an explanatory diagram of the final desired shape for which the No. program is to be created according to the present invention. Now, there are two straight lines between a and space S6. It is composed of
o This is the part that is converted into data.

Therefore, in the present invention, No data G01 between a and b
X...Y...2... ;X..., Y..., Z
...; is created in advance and stored in the memory as No. data A.

On the other hand, since the distance between b and c is a free curve that cannot be expressed by a straight line or a circular arc, in the present invention, the No. data between b and 0 is created by a tracing operation. Furthermore, N between this b and c
Let the o data be NO data B.

Also, between c and d, there is one straight line S3 and one circular arc ARO1.
Therefore, in the present invention, the No data between c and d GOIX...Y...Z; GO5X...Y
. . . Engineering... J... ; is created in advance and stored in the memory as No. data 0.

Furthermore, since the distance between d and c is a free curve like the distance between b and c, in the present invention, N between this distance between d and c.

Data is created by copying motion. Similarly, this No data between d and 0 is designated as NO data D.

FIG. 6 is a block diagram of an embodiment of the present invention. In Fig. 3, reference numeral 1 is the copying control unit, which moves the table on which the model is mounted in the X and Y axis directions (X is the copying axis, Y is the big feed axis), and also moves the table on which the model is mounted, based on the displacement of the stylus. Move the tracer head in the Z-axis direction and
, the current position (x8.) ra) in the Y-axis direction and the current position za of the tracer head in the Z-axis direction as position data P (x,
y, za). 2 is a No data creation circuit which takes in position data P at a predetermined period or when the maximum error between the model shape and the approximate straight line exceeds a predetermined tolerance, and uses the position data P to create No data. Create. That is, the No. data creation circuit 2 approximates a free curve with a plurality of straight lines, and creates No. data such that the tool moves along each approximated straight line.

In the example shown in FIG. 2, No data B is generated due to the copying operation.

D is created. 3 is a memory for storing No. data created in advance, and in the example of FIG.
Data 0 is created and stored in advance. Reference numeral 4 includes a No. 4 program creation section, which synthesizes the No. data A to D output from the No. data creation circuit 2 and the memory 3 to create a No. program. Reference numeral 5 represents a memory for storing the created No. program, and 6 represents a composition order instruction section for instructing the tape creation section 4 on the order of composition of No. data. This synthesis order instruction section 6 is the No data switching position, in other words, the memory 3
From the coordinates of position d (Fig. 2) and the No. data created by the copying motion, the No. data stored in the memory 3 is switched to the No. data created by the copying motion.
A register section 6a stores the coordinates of positions c and e to switch to the No data stored in the register section 6a, a reading control section 6b, and a copying position P output from the copying control section 1 and the coordinates of the position e stored in the register 6a. A comparison unit 6c compares the coordinates with the switching position and outputs a coincidence signal OIN when they match, and stores the order in which the No. data created by copying and the No. data stored in the memory 3 are combined. The composition order storage section 6d is destroyed. That is, the synthesis order storage unit 6dFi
In the example shown in Figure 2, the number data in the memory is stored in the order of ``1'' in the order of NO data in the memory → No data created by copying → NO data in the memory → N-0 data created by copying K.
", 10 with the No. data created by copying as 0"
I remember 10. Then, this synthesis order storage unit 6d
is K, 1°, °0 every time the coincidence signal OI N is generated, in other words, every time the scanning position [P arrives at the switching position b%e.
”, °1°, ゛0” are output.

Next, the operation of the embodiment shown in FIG. 3 will be briefly explained with reference to FIG.

First, position the stylus 8TR at the starting position a. Then, the stylus is moved along the straight line SI,8 by a normal tracing operation. When the stylus 8TR reaches point b), the comparison section 6C outputs a coincidence signal OIN, which is stored in the synthesis order storage section. No. program creation section 4
Reads the first No. data A from memory 3 due to manual input of "°1" from the synthesis order instruction section, and reads the first No. data A from memory 5.
Store at the beginning of. Similarly, the coincidence signal OiNti outputted from the comparison section 6c is also input to the readout control section 6b. Therefore, the read control unit 6b reads out the coordinates of point c from the register 6a instead of the coordinates of point b, and
Input to c.

Now, the copying operation continues without stopping, and in parallel with this copying operation, the No. data creation circuit 2 creates No. data using the copying position data P and stores it in the built-in memory. . Then, when the tracing position P reaches point c, the coincidence signal OIN is generated again, and the synthesis order storage unit 6
d, "0" is input to the No program creation section 4.

As a result, 9 NO data B is read from the built-in memory of the NO data generation circuit 2 on the NO program creation section, and NO data A and K are successively stored in the memory 5. After that, the same operation is repeated and NO data A, B, 0.
A No program consisting of D is created and stored in the memory 5.

As described above, according to the present invention, the No data of parts that are easy to convert into ij:No data is created in advance, and the No data of parts with complex shapes are created in advance.
o data is created by tracing motion, and these two data are appropriately combined to create a No. program, so No. data can be easily created with high accuracy even for objects with complex shapes and simple shapes. can do.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of the drawbacks of the conventional method, FIG. 2 is a schematic explanatory diagram of the present invention, and FIG. 3 is a block diagram of an embodiment of the present invention. 1...Copying control section % 2...No data creation circuit 3
...Memory, 4...NO program creation section 5...
・Memory, 6...Synthesis order instruction department Special applicant: Fujitsu Fanuc Co., Ltd. Agent Patent attorney: Tsuji
In fact, ZoC correction book (method) for the first master, Showa, 1970, 1970,! / 8 Commissioner of the Patent Office Kazuo Wakasugi 1. Indication of the case 1982 #Revision request No. 101920 2. Name of the invention NC program creation method 3. Person making the amendment Relationship with the case Patent applicant No. Address: 3-5-14 Asahigaoka, Hino-shi, Tokyo Agent address: 3-145 Kanda Ogawa-cho, Chiyoda-ku, Tokyo 101
Date of amendment order: September 9, 1957 (Shipping date: September 28, 1957) Subject to amendment by the 6th meeting

Claims (2)

[Claims] (1) a copying control unit that performs a copying operation along the model and outputs position information obtained by the copying operation;
It has a No data creation unit that creates NO data using the position information, a storage unit that stores the NO data created in advance, and a processing unit, and the processing unit outputs the NO data from the No data creation unit. N. A No program creation method characterized in that a No program is created by combining data and No data stored in a storage unit. (2) Create NO data for certain parts of the model in advance.
Store it in the N1 storage unit, and also store N in another part of the model.
C! The data is created using the position information obtained by the copying operation, and the boundary position between the certain part and another part is memorized, and the copying position is used when performing the copying operation along the model. N is characterized in that the NO data used for creating the No program is switched when it reaches a boundary position. Program creation method. cormorant