JPS61275908A - Numerical control working method - Google Patents

Abstract

PURPOSE:To obtain a numerical control working method where all workpieces can be worked, by inputting only NC data which works one workpiece into a desired shape and data which specifies a regularity of workpiece arrangement to generate NC program for scheduled working of all workpieces. CONSTITUTION:Plural workpieces Wij to be worked into the same shape are fixed to a table of a machine tool by a jig JG. m-number of workpieces Wij (m=3) are arranged at a pitch Px in the X direction and n-number of workpieces Wij (n=3) are arranged at a pitch Py in the Y direction in a grid. The workpiece W11 is a reference workpiece arranged on a reference stage S11, and NC data for working of the reference workpiece W11 on the reference stage S11 is generated and inputted. Since workpieces Wij are arranged regularly, NC data which works the reference workpiece W11 into a desired shape and data which specifies the regularity, for example, Px, Py, (m), and (n) are inputted to generate NC data which works each workpiece into the desired shape, and individual workpieces are worked with NC data to obtain parts of the same shape.

Description

[Detailed Description of the Invention] <Industrial Applications> The present invention relates to a numerically controlled machining method, and particularly to numerically controlled machining of multiple pieces in which the same shape is machined on a plurality of workpieces placed on a machine tool. Regarding the method.

<Prior art> As a processing method, there is a multi-cavity method. In this multi-piece machining, multiple workpieces are placed on the table of a machine tool using a jig, and multiple workpieces are machined to the same shape in one setup operation, making it more efficient with fewer setups. This is an effective machining method that can produce a large number of machined parts.

By the way, in multi-piece machining, although each workpiece is machined to the same shape, conventionally machining shape data is input for each workpiece to create NC data for each workpiece, and these NC data are The data were combined to create the entire NC data.

<Problems to be solved by the invention> However, even though the machining shape is the same except for the work placement position, the method of inputting shape data for each work requires considerable time and effort to create NC data. The problem is that it requires This problem becomes more noticeable as the number of workpieces to be prepared increases.

From the above, an object of the present invention is to provide a numerically controlled machining method that allows machining of all set-up workpieces by simply inputting NC data for machining one workpiece into a desired shape and data specifying the regularity of the workpiece arrangement. It is to provide.

Another object of the present invention is to eliminate NG for machining all workpieces, which can be set up simply by inputting NC data for machining one workpiece into a desired shape and data specifying the regularity of the workpiece arrangement.
It is an object of the present invention to provide a numerically controlled machining method that allows the creation of programs.

Means to solve problems〉 FIG. 1 is a schematic explanatory diagram of the present invention.

A plurality of workpieces W (1=1 p 2p . . . ; J=1° 2 . . . ) to be machined into the same shape are fixed to the table of the machine tool by a jig JG.

Each workpiece Wl is arranged in a grid pattern with a pitch P in the horizontal direction (X direction).
m (=3) pieces are arranged in the x direction, and n (=3) pieces are arranged in the vertical direction (Y direction) Nihitch Py.

Wll is a reference work (reference work) placed on the reference stage S11, and NC data to be processed on the reference stage S11 is created and input to the reference work W of B.

Now, if each workpiece Wlj is arranged regularly in this way, the reference workpiece W1. NC data for processing into a desired shape and data specifying the regularity, such as Px, Py,
By inputting m and n, NC data for processing each work into a desired shape can be created from these data, and each work can be processed using the NC data to obtain parts of the same shape.

NC data for performing the desired processing on the reference workpiece W, 1 and data for specifying the regularity of the workpiece arrangement (Px, Py,
m, n), create NC data of the workpiece to be machined based on the NC data, data specifying regularity, and which workpiece is to be machined, and process the workpiece based on the NC data. administer.

It is also possible to process while creating NC data for another workpiece based on the NC data for machining the reference workpiece W11 and the regularity of the workpiece arrangement, or to process all the workpieces that have been set up at once. After creating the NC data to
It is also possible to perform numerical control processing using data. In such a case, NC data for performing the desired machining on the reference workpiece Wll is created as a subprogram, data that specifies the regularity of the workpiece arrangement is input, and the data that specifies the regularity and the Create NC data for setting a coordinate system for the work depending on whether the work is to be machined, and create a main program for machining the work using at least the NC data for setting the coordinate system and subprogram call command data; By creating a main program for each workpiece, NC data for machining all the workpieces is created, and numerically controlled machining is performed based on the NC data.

<Embodiment> FIG. 2 is a block diagram of an automatic programming device that automatically creates NC data for multi-piece machining, and FIG. 3 is a flowchart of automatic programming processing.

In FIG. 2, 11 is an automatic programming main body, which includes a processor 11a and a ROMI lb.

It has a RAM 11c and a working memory lid.

12 is a graphic display device, 13 is a keyboard, 14 is a disk control device, and 15 is another input/output device.

Now, when placing multiple workpieces on a table and drilling the same hole in the same position on each workpiece, it is necessary to drill the holes in advance and create an NC program for machining multiple pieces. A system program is read from the floppy FP and stored in the RAM 11c. That is, ROM11
The system program is read from the floppy FP under the control of the loading program stored in b.
Store in M1lc. In this state, the NC program can be created from now on.

The NC program creation process for multi-piece machining will be described below.

(1) First, create an NC program to position the tool at the hole machining position of the base work W (see Figure 1) using a well-known method, and convert the NC program into subprogram 0.
0100 and is stored in the working memo IJ 11 d. Incidentally, as shown in Fig. 4, P, → is attached to the reference work W41.
If the tool is moved from the origin Pr (tool initial position) in the order of P2→P3 to machine a hole, the subprogram will be XxYy; 1\x, Yy, ; Xx3Yy,; M2O;. However, M2O is data indicating the end of the subprogram.

(2) Next, the operator inputs data specifying the regularity of the arrangement of the workpieces fixed by the jig JG into the table of the machine tool.

For example, as shown in FIG. 1, each workpiece W1. m (=3) pieces are arranged horizontally in a grid pattern at a first pitch Px,
If n (=3) pieces are arranged in the vertical direction at the second pitch Py, input Px, Py, m·n.

Further, as shown in Fig. 5, the reference workpiece (both inclined line parts) W, 1 is separated into (a) at least two sub-works SWI, SW2, (bl and each is processed to have the same shape). (C)
Furthermore, the second sub-work SW2 is the first sub-work SWI.
at a predetermined angle (
In the case of a rotated relationship (180° in the example of Fig. 5), the data specifying the regularity is the coordinate value of the rotation center Pc, the rotation angle, the horizontal pitch Px and the number m (=3), and the vertical pitch. Input Py, number n (=2), etc.

(3) The processor l1m uses the input data specifying regularity to check whether there is a workpiece that is arranged in rotation with respect to the reference workpiece.

The case in FIG. 1 is a parallel arrangement, and the case in FIG. 5 includes a rotating arrangement.

(4) In the case of parallel array, the processors are 1→i, 1→j. Note that i and j are variables for specifying the arrangement position of the workpieces.

(51, then the processor uses the base work W (m1
A main program for drilling holes at each position in the figure) is created and stored in the working memory 11d.

Note that this main program is G31ZzRr; M9800100; However, G81 is a G function command that means a fixed cycle for hole drilling, the alphabet Z is a word address word that specifies the hole depth with the numerical value that follows, and the alphabet R is the following [1r to start drilling in the Z direction. M2S is a word address word that specifies a location, and M2S is a subprogram call instruction that calls a subsequently specified subprogram.

The hole depth ball and the position of the hole machining start point are inputted in advance and are known.

In addition, referring to FIG. 6 with the above fixed cycle command, the tool TL is moved in rapid traverse from the positioning point (hole position) P to the hole machining start point R, and then a hole of depth Z is machined, and after the machining is completed, the tool TL is Fast forward, and the process to be pulled up is identified.

(6) Then, processor lla j+1→j j is updated by

(7) After processing, processor lla checks whether j>m.

(8) If J≦m, set the target work to the work to the left of the previous work, create a main program for drilling holes in the work W1, and store it in the working memory 11d. Note that this main program is G92XxYy; G31ZzRr; M9800100°. However, G92 is a G function command for setting the coordinate system, and as shown in Fig. 7, the coordinate system X-Y is set such that the coordinate values of the position where the tool is present are (X, L). .

Now, the tool is located on point P3 at the time when all the holes have been drilled on the reference workpiece W (see FIG. 4). Therefore, from now on, the main program must be created so that the tool is positioned above the point P' of the workpiece W on the left and the holes are machined on the workpieces W and 2 in sequence. In other words, the main program for the work W, 2 must be created so that the tool can be positioned in the order P→P1'→P2'→P3. And for this name, it is necessary to change the coordinate system from X-Y to X'-Y',
The G function command (G92) for setting the coordinate system is used.

In the case of Fig. 4, since the coordinate value of point P3 in the X-Y coordinate system is (x3.y3) and the horizontal pitch is PX, the coordinate value of point P3 as seen from the X'-Y' coordinate system (King, L) becomes the following formula % formula %. Therefore, using this king, L, the NC of the coordinate system setting is
Create data G92XxY1;

Once the creation of the main program for the work on the left is completed, steps (6) to (8) are repeated until j>m.
) repeat the process.

(9) If j > m, the main program for machining all the workpieces in the first row has been created. Therefore, processor lla increments 1 by 1 and sets J to 1 by 1→j, i+1→l.

(11) Next, the processor checks whether i>n, and if it is n, it means that the creation of the main program has been completed for all the works, and the process ζ ends. Incidentally, the main programs are stored in the working memory lid in the order of creation (by this, the NC programs for all the works are generated in the working memory lid).

(11) On the other hand, if l≦, create a main program for drilling holes in the first workpiece W in the first row. Furthermore, this main program is G92Xx'Yy'
;G31ZzRr; M9800100°. However, 5' and L' are given by the following formula % formula %.

As described above, once the creation of the main program is completed, the processes from step (6) onward are repeated until 1>n, and the creation of the main program for machining all the workpieces is completed.

(On the other hand, if the workpiece arrangement includes a rotational arrangement in step (3), the reference workpiece is set as the first subwork SWI (see Figure 5), and the reference workpiece is in a rotational arrangement relationship with the reference workpiece. The work is the second sub-work SW2,
1st and 2nd sub-work SWI.

A new standard work W1 with SW2. is composed of 9.

Then, using the coordinate values of the rotation center Pc, the rotation angle, and the subprogram, NC data for drilling the second subwork SW2 is created. Note that the NC data of the second sub-work is created based on the coordinate system of the first sub-work.

(Step 11: Next, create a new subprogram by combining the NC program for machining the first subwork and the NC program for machining the second subwork, and convert the subprogram to 0.
0100 in the working memo IJ 11 d. Thereafter, the process from step (4) onwards is repeated.

Furthermore, if the coordinate value of the rotation center Pc is ("op Yo) and the rotation angle is 180°, then the second sub-work corresponding to the point P, (i=1.2.3) on the first sub-work SWI The coordinate value (x,') of the point P,' above.

y,') is determined by the following formula. However, (x, y y,) is the point P
is the coordinate value of

As described above, once the NC program for machining all the workpieces is created, the NC program is input to the NC device to perform numerically controlled machining for multiple pieces.

Note that, although the above description describes the case where an NC program for machining all the workpieces is created and the NC program is input into the NC device to perform machining of multiple pieces, the present invention is not limited to such a case. In other words, the present invention has N for machining the reference workpiece.
C data and data specifying the regularity of the workpiece arrangement are directly input to the NC device, and the NC device sequentially obtains NC data for machining the target workpiece through the same process as described above, while machining the target workpiece into the same shape as the reference workpiece. It can also be configured to perform Moreover, although the case where drilling is applied to machining has been described above, the present invention can also be applied to other machining processes.

<Effects of the Invention> According to the present invention, the same processing can be performed on a plurality of set-up workpieces simply by inputting NC data for processing a reference workpiece into a desired shape and data specifying the regularity of the workpiece arrangement. I can do it.

Further, an NC program for machining a plurality of set-up workpieces can be created easily and in a short time by simply inputting reference NC data for the workpieces and data specifying regularity.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram for explaining the present invention in detail, and is an arrangement diagram of a set up workpiece, FIG. 2 is a block diagram of an automatic programming device for creating a multi-cavity NC program by the method of the present invention, and FIG. The figure shows N and C for multi-cavity machining.
A flowchart of the program creation process, Figure 4 is an example of machining shape, Figure 5 is an array diagram when rotation array is included, Figure 6 is an explanatory diagram of the fixed cycle with holes, and Figure 7 is the NC data for setting the coordinate system. It is an explanatory diagram. Wl...work, w,!・Base work, S・
・Stage, JG...jigs, disputes Px...horizontal workpiece arrangement pitch, Py...vertical workpiece arrangement pitch Patent applicant Fanuc Co., Ltd. Agent Patent attorney Chimiki Saito 1 [zl- No. 4 Si-in stage 5Ir-Kg, c stage. Thing 20! Fukan figure 3 (B) Medical figure 4

Claims (6)

[Claims] (1) In a multi-piece numerical control machining method in which the same shape is machined on multiple workpieces placed on a machine tool regularly, the above-mentioned regularity is combined with NC data for performing desired machining on a reference workpiece. Input the data to specify, create NC data for the work to be machined based on the NC data, data for specifying regularity, and which work is to be machined, and process the work based on the NC data. A numerically controlled processing method characterized by applying. (2) The data specifying the regularity is Px when m pieces of workpieces are arranged in a grid pattern horizontally at a first pitch Px and n pieces are arranged vertically at a second pitch Py. ,
A numerically controlled machining method according to claim (1), characterized in that it includes Py, m, and n. (3) The reference work includes at least two separate sub-works that are machined into the same shape, and the second sub-work rotates the first sub-work by a predetermined angle around a predetermined position. In some cases, the first NC data for machining the first sub-work into the desired shape and the data specifying the rotation center and rotation angle are input, and these data are used to process the second sub-work into the same shape. Create the second NC data to be processed, and combine the first NC data and the second NC data to obtain the N of the reference workpiece.
A numerically controlled machining method according to claim 1 or 2, characterized in that C data is created. (4) In a multi-piece numerical control machining method in which the same machining is performed on multiple workpieces regularly placed on a machine tool, NC data for performing the desired machining on a reference workpiece is created as a subprogram. At the same time, input data specifying the regularity, create NC data for setting the coordinate system for the workpiece based on the data specifying the regularity and which workpiece is to be machined, and at least create NC data for setting the coordinate system for the workpiece. Create a main program for machining the workpiece using data and subprogram call command data, create a main program for each workpiece, create NC data for machining all workpieces, and create NC data for machining all workpieces based on the NC data. A numerically controlled machining method characterized by performing numerically controlled machining. (5) The data specifying the regularity is Px when m pieces of workpieces are arranged in a grid pattern horizontally at a first pitch Px and n pieces are arranged vertically at a second pitch Py. ,
The numerically controlled machining method according to claim (4), characterized in that it includes Py, m, and n. (6) The reference work includes at least two separate sub-works that are machined into the same shape, and the second sub-work rotates the first sub-work by a predetermined angle about a predetermined position. In some cases, first NC data for machining the first sub-work into a desired shape is created and input, and data specifying the rotation center and rotation angle are input, and these data are used to process the second NC data. A patent characterized in that second NC data for machining a sub-work into the same shape is created, and a sub-program for the reference work is created by combining the first NC data and the second NC data. Claims paragraph (4) or (
5) Numerical control processing method described in section 5).