JPS62140752A - Copy control system - Google Patents

Abstract

PURPOSE:To promote the improvement of machining efficiency due to the reduction of a copying route, by simultaneously performing a pick feed and a copy feed through speed signals in the feed and copy axial direction and the pick feed axial direction based on a displacement signal from a tracer head. CONSTITUTION:A tracer head in a copy start point St is fed in a +Y axis direction by a speed signal in an X-axis direction, and the tracer head, if it reaches a point (a) on a pick feed position P2, is fed in a -X axis direction by a speed signal in the X-axis direction while in a -Y axis direction by a pick feed signal in a Y-axis direction. Next the tracer, if it reaches a point (b) by obtaining a predetermined moving amount pl in the Y-axis direction, is fed in the -X axis direction by the speed signal in the X-axis direction. The tracer head, if it reaches a point (c) on a position pl, is fed in the +X axis direction by the speed signal in the X-axis direction while in the -Y axis direction by the speed signal in the Y-axis direction. The tracer head, if it reaches a point (d) by obtaining the predetermined moving amount pl in the Y-axis direction, is fed in the +X axis direction by the speed signal in the X-axis direction. Hereafter the tracer head is similarly fed to an end point EN, and efficiency is improved by reducing a copying route.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in a profiling control method, and more particularly to a profiling control method that can improve machining efficiency.

[Conventional technology]

When tracing a model using a tracing control device, conventionally the model is generally traced along the route shown by the bold line in FIG. In the figure, M is the model, ST is the tracing start point, EN is the tracing end point, and PI and P2 are the left and right pink feed positions, respectively. That is, conventionally, tracing feed is performed in the +X-axis direction from the tracing start point ST, a predetermined amount of pick feed is performed when the tracer head reaches the right pick feed position P2, and after the completion of the predetermined amount of pick feed, the trace feed is performed in the +X-axis direction. Follow the direction and feed
The operation of performing a predetermined amount of big feed when the tracer head reaches the left big feed position P2 is repeated until the tracer head follows the pattern and reaches the end point EN.

[Problems to be solved by the invention C] By the way, the closer the big feed positions PL and P2 are set to the model M, the shorter the tracing route and the shorter the time to trace the model M. As shown in FIG. 7, a certain distance must be provided between the pick feed position PL, P2 and the pick feed position PL, P2. The reason for this is that in order to trace the model M with a prescribed accuracy, it is necessary to trace the model at a prescribed speed, but even if tracing feed is started after the big feed is completed, the prescribed feed speed is not reached immediately; This is because a certain distance is required before the speed reaches a predetermined speed. In this way, model M and pink feed position P1. Since it is necessary to provide a certain amount of space between P2 and P2, if the tracing feed and big feed were performed alternately as in the conventional example described above, the tracing path would be long, making it difficult to increase machining efficiency. There was a problem that I couldn't do it.

The present invention solves the above-mentioned problems, and its purpose is to improve processing efficiency.

Means for Solving Problem C] In order to solve the above problems, the present invention creates velocity signals in the feed axis direction and the profile axis direction based on the displacement signal from the tracer head that tracks the model surface. , relatively moving the model and the tracer head according to the speed signals in the feed axis direction and the profile axis direction until the tracer head reaches a position having a predetermined relationship with the pink feed position, and the tracer head reaches a position having a predetermined relationship with the big feed position, so that the model and the tracer head are connected to each other according to the speed signal in the big feed axis direction, the speed signal in the feed axis direction, and the speed signal in the profiling axis direction. is relatively moved until the amount of movement of the tracer head in the direction of the big feed axis reaches a predetermined amount, and the amount of movement of the tracer head in the direction of the big feed axis reaches a predetermined amount. The model and the tracer head are moved relative to each other according to speed signals in the axial direction and the tracing axis.

[For production]

Since pick feed and tracing feed are performed at the same time, the tracing path is shorter than in the conventional example, and therefore machining efficiency can be improved.

〔Example〕

FIG. 1 is a diagram showing an example of a tracing path according to the method of the present invention, in which the feed axis is the X axis, the tracing axis is the Z axis, and the pick fee F axis is the Y axis. In this figure, the same reference numerals as in FIG. 7 represent the same parts.

The tracer head placed at the tracing start point S]' is first sent in the +X-axis direction at a speed according to the speed signal in the X-axis direction. When reaching point a on the big feed position P2, the tracer head is sent in the -X-axis direction at a speed according to the speed signal in the X-axis direction, and also follows the speed signal in the Y-axis direction (pink feed signal). It is sent in the -Y axis direction at a speed. Then, when the amount of movement in the X-axis direction becomes a predetermined value Npβ and the point b is reached, the 1-laser hand is sent in the =X-axis direction at a speed according to the speed signal in the X-axis direction. and,
When reaching the 0 point on the pick feed position 1fflPl,
The tracer head moves at a speed according to the speed signal in the X-axis direction.
It is sent in the X-axis direction and also in the -Y-axis direction at a speed according to the speed signal in the Y-axis direction. Then, when the amount of movement in the Y-axis direction reaches a predetermined amount px and reaches point d, the l laser head is sent in the +X-axis direction at a speed according to the speed signal in the X-axis direction. Thereafter, similar operations are performed, and the 1-laser node follows the path d −+ e-1-f− shown by the thick line in the same figure.
It is sent along gh-4i -j -*kg to the end point EN.

As described above, according to this embodiment, the tracing path can be made shorter than that of the conventional example shown in FIG. 7, so that processing efficiency can be improved.

FIG. 2 is a diagram showing another tracing route according to the method of the present invention, where 21°1P2' indicates a position one predetermined distance before the pink feed positions PL and P2, and the other first
The same reference numerals as in the figure represent the same parts.

The tracer head placed at the tracing starting point ST first
It is sent in the +X-axis direction at a speed according to the axial speed signal. When reaching point a, which is a predetermined amount before the pink feed position P2, the tracer head is sent in the +X-axis direction at a speed according to the speed signal in the X-axis direction, and - at a speed according to the speed signal in the Y-axis direction. Sent in the Y-axis direction. Here, the feed based on the speed signal in the Y-axis direction is performed until the amount of movement of the tracer head in the Y-axis direction reaches a predetermined amount pl, and the feed in the +X-axis direction based on the speed signal in the X-axis direction is performed until the tracer head moves by a predetermined amount pl. is carried out until the pick feed position P2 is reached. Therefore, the tracer head reaches the 0 point on the big feed position P2 through a path of, for example, a-*b 4 C. When the tracer head reaches the zero point on the pink feed position P2, the tracer head is sent in the −X-axis direction by the speed signal in the X-axis direction. By reaching point d, which is one predetermined distance before the pick feed position P1, the tracer head is sent in the -X-axis direction at a speed according to the speed signal in the X-axis direction, and at the same time, according to the speed signal in the Y-axis direction. It is sent in the -Y axis direction at the same speed. When the tracer head moves along the path d-e→r to point f, the tracer head moves to +
Sent in the X-axis direction. Similar operations are performed thereafter, and the tracer head follows the path f→g-4h-a-i −+ j →
−+ (f −+ Follow m−4n to end point E
Sent to N. If the speed signal in the Y-axis direction is appropriately set, the model M can be traced along the route shown in FIG. 3, and in this way, the traced route can be made the shortest.

FIG. 4 is a block diagram showing an example of a device used when implementing the method of the present invention, and 1 is a tracer same speed signal VN.
, a speed signal generation circuit that outputs a tangential speed signal v,
8 is a polarity inverting circuit which outputs a signal applied from the microprocessor 15 via the output section 17; when it is "1", the tangential velocity is passed through as is; when it is "0", the polarity is inverted and output; Distribution circuit, 10 is gate circuit, IIX~
112 is a drive circuit, 12X to 12Z are motors for relatively moving the tracer head 1 and model 3 in the x, y, and X axis directions, and +3X to 13Z are motors 12X to 12Z that rotate forward at a predetermined angle The position detectors 14X to 142 output a + pulse each time the motors 12X to 122 reverse by a predetermined angle, and output a - pulse to each time the motors 12X to 122 reverse by a predetermined angle. This is a counter that increments the count value by 1 each time a - pulse is applied, and the count value indicates the current position of the tracer head 1 (x, y, z).
It corresponds to the coordinates.

In addition, 15 is a microprocessor,] 6 is a microprocessor in FIGS.
X coordinates of pick feed positions PI and P2 shown in the figure.

X coordinates of PL' and P2', reference displacement amount ε. 17 is an output section, 18 is an input section,
19.20 is a DA converter, and 21 is an indexing circuit.

Displacement signal ε8 in the X, Y, and X axis directions output from the tracer head 1. ε7. The ε process is added to the displacement synthesis circuit 4 and the indexing circuit 21. The displacement synthesis circuit 4 creates a composite displacement signal ε of ε−f redundancy (100% “E!”) and sends it to the adder 5.
In addition, the adder 5 receives a reference displacement signal ε applied from the microprocessor 15 via the DA converter 19. and the composite displacement signal ε is added to the speed signal generation circuits 6 and 7,
The speed signal generation circuit 6.7 outputs a normal speed signal VN and a tangential speed signal vT. Further, the indexing circuit 21 creates displacement direction signals sin θ and cos θ indicating the displacement direction within the profile plane (assumed to be the X-Z plane in this case) and applies them to the distribution circuit 9 . The distribution circuit 9 receives a tangential velocity signal VT, a normal velocity signal ■N, and a displacement direction signal Sinθ.
, cos θ, generate speed signals in the X and X-axis directions and apply them to the gate circuit 10. The gate circuit 10 performs gate operations according to control signals c and d applied from the microprocessor 15 via the output section 17.
In this embodiment, when the control signals C2d are both "0", the speed signals in the X and Z axis directions output from the distribution circuit 9 are added to the drive circuits 11X, ]]Z, respectively, and the control signals c,
If d is both "1", the velocity signals in the X and Z axes are added to the drive circuits +1X and +12, respectively, and the Y signal is added from the microprocessor 15 via the DA converter 20.
The drive circuit 11 transmits the speed signal in the direction of the axis (pick feed axis).
In addition to Y, control signals c and d are “O” and “1,” respectively.
”, only the speed signal in the Y-axis direction applied from the microprocessor 15 via the DA converter 20 is applied to the drive circuit 11Y.
The motors 12X to 12Z are driven by the +1Z output signal, and the tracer head 1 and model 3 are moved relative to each other. The above-mentioned operation is already well known as tracing control.

FIG. 5 is a flowchart showing the processing contents of the microprocessor 15 when tracing a model along the tracing path shown in FIG. 1, and the operation at that time will be explained below with reference to the same figure.

When the start of tracing is commanded, the microprocessor 15
First, a control signal is applied to the output section 17, and the output signal S,
c and d are set to "1", "0", and "O", respectively (step Sl).As a result, the polarity inversion circuit 8 outputs the tangential velocity signal VT as it is, and the gate circuit 10
is for applying the velocity signals in the X and Z axis directions from the distribution circuit 9 to the drive circuits 11X and +12, so the tracer head 1 will move along the path 5T-a shown in FIG. .

Next, the microprocessor 15 determines whether the tracer head 1 has reached the right pick feed position P2 (step S2), and if the determination result is YES, the microprocessor 15 determines whether the tracer head 1 has reached the tracing end point EN. (Step S3). Note that whether or not the tracer head 1 has reached the pick feed position P2 is determined based on the X coordinate of the pink foot position P1 stored in the memory 16 and the count value of the counter 14X via the input section 18. Furthermore, whether or not the tracer head 1 has reached the tracing end point EN is determined based on the Y coordinate of the tracing ending point εN stored in the memory 16 and the count value of the counter 14Y. .

Then, tracer head 1 is at the big feed position Zf'l
, and when it is determined that the tracing end point EN has not been reached, the microprocessor 15 applies a control signal to the output section 17, and changes the output signals s, c, d to '0'', '1'', respectively. '1'' (step 34).

As a result, the speed signals in the X and Z axis directions outputted from the distribution circuit 9 and the output section 17 .
The speed signals in the Y-axis direction outputted via the DA converter 20 are respectively sent to drive circuits 11x.

11Z, IIY, the tracer head 1 moves along the path a-b shown in FIG.

Next, the microprocessor 15 determines whether the tracer head 1 has moved a predetermined 1 pff in the Y-axis direction based on the value of the counter 14Y (step 35).
. When the microprocessor 15 determines that it has moved by a predetermined amount of Np1, the microprocessor 15 applies a control signal to the output section 17, and sets all of the output signals S, C, and D to "0" (step S6). 8 applies a signal obtained by inverting the polarity of the tangential velocity fa VT to the distribution circuit 9, and the gate circuit 1o applies the velocity signals in the X and Z axis directions from the distribution circuit 9 to the drive circuits 11X and 112. , the tracer head 1 follows the path b - h c shown in FIG.
will move along.

Next, the microprocessor 15 determines whether the tracer head 1 has reached the left pick feed position P1 (step S7), and if the determination result is YES, the microprocessor 15 determines whether the tracer head 1 has reached the tracing end point EN. is determined (step S8). Then, when it is determined that the +mart tracer head l has reached the pick feed position P1 and has not reached the tracing end point EN, the microprocessor 15 applies a control signal to the output section 17, and outputs the output signal. c.

d are all set to 1" (step S9). As a result, the gate circuit 10 applies velocity signals in the X, Y, and Z axis directions to the drive circuits 11X, IIY, and 11Z, respectively, so that the tracer head 1 is configured as shown in FIG. It moves along the path C → d.Then, I, Laser, and Do 1 move by a predetermined amount p in the Y-axis direction.
If it is determined that the tracer head 1 has moved by 2, the microprocessor 15 returns to step S1, and the tracer head 1 moves along the path d-he. Similar processing is performed thereafter, and the tracer head l follows the path d − to the end point EN.
* Move along -4- to 6-+ f -h g -+h-+1-4j-+.

Further, FIG. 6 is a flowchart showing the processing contents of the microprocessor 15 when tracing a model along the tracing route shown in FIG. 2 or 3. When the microprocessor 15 is instructed to start tracing, First, the output section 17
A control signal is applied to the output signals S, c, and d to be "1", "0", and "0", respectively (step 52).
1). As a result, the tracer head l moves along the path 5T-+a shown in FIG. Then, when it is determined that the tracer head 1 has reached a position P2° which is two predetermined amounts before the big feed position P2 (steer knob 522),
The microprocessor 15 applies a control signal to the output section 17, and sets all output signals s, c, and d to "1" (step 523). As a result, the tracer head 1 moves along the path a-+-b shown in FIG.

The microprocessor 15 then executes the 1-laser node 1
has moved a predetermined amount of ff1pI2 in the Y-axis direction (step 5)?
24), or it is determined whether the right big feed position P2 has been reached (step 525). If it is determined in step S24 that the tracer head 1 has moved by the predetermined distance ff1p in the Y-axis direction, the microprocessor 15 applies a control signal to the output section 17 and outputs the output signal.

Set c and d to "1", 0, 1 and "0", respectively (step $28).As a result, the tracer head 1 moves along the path b - + c shown in Fig. 2, and eventually reaches the pink feed position. It will reach P2.

When it is determined in step S29 that the tracer head 1 has reached the pick feed position P2, the microprocessor 15 determines whether the tracer head 1 has reached the tracing end point EN (step 530), and the determination result is If NO, a control signal is applied to the output section 17, and the output signals S, C, and D are all set to "0" (Step 53).
1). As a result, the tracer head 1 moves along the path C4d shown in FIG. Furthermore, if it is determined in step S25 that the tracer head 1 has reached the pick feed position P2, that is, if the tracer head has reached the pick feed position P2 before the amount of movement of the tracer head 1 in the Y-axis direction reaches p6. , the microprocessor 15 applies a control signal to the output section 17 and outputs the output signal, c
.

Set d to "I" and 0"1 to "1", respectively (step 826). As a result, the speed signal in the Y-axis direction from the DA converter 20 is applied to the drive circuit]1 via the gate 10, so that The 1-laser head 1 will move in the -Y-axis direction. When it is determined that the amount of movement in the Y-axis direction has reached the predetermined amount pl (step 527), the microprocessor 15 moves to step 331.

When the process of step 331 is completed, the microprocessor 15 determines whether the tracer head 1 has reached a position P1' which is two predetermined distances ahead of the left pink feed position P1 (step 532). When it is determined that the tracer head 1 has reached P1', the microprocessor 15 applies a control signal to the output section 17, and sets the output signals S, c, and d to "0", "1', and "1", respectively. As a result, the tracer head 1 moves along the path d - e shown in FIG. It is determined whether the big feed position P2 has been reached (step 535).

If it is determined in step S34 that the tracer head 1 has moved by a predetermined amount pff in the Y-axis direction, the microprocessor 15 applies a control signal to the output section 17, and the output signal
c and d are all set to 0" (step 536). As a result, the tracer head 1 follows the path e − + f shown in FIG.
, and eventually reaches the pick feed position P1. Then, when it is determined in step S37 that the tracer head 1 has reached the pick feed position P1, the microprocessor 15 determines whether or not the tracer head 1 has reached the tracing end point EN (step S54).
0), if the determination result is NO, the process returns to step S1. As a result, the 1-laser head 1 moves along the path rg shown in FIG. Also, Step 7 S3
If it is determined in step 5 that the tracer head 1 has reached the pick feed position P1, that is, if the tracer head has reached the pink feed position P1 before the amount of movement of the tracer head 1 in the Y-axis direction reaches pI, the microprocessor 1
5 adds a control signal to the output section 17 and outputs the output signal S, c
, d are set to "0", "'0", and "l", respectively (step 538). As a result, the velocity signal in the Y-axis direction from the DA converter 20 is applied to the drive circuit 11 via the gate 10, so that the tracer head 1 moves in the -Y-axis direction. Then, the amount of movement in the Y-axis direction is a predetermined Mpl.
When it is determined that the tracing end point EN has been reached (step 539), it is determined whether the tracing end point EN has been reached (step 540).
If it is determined that the tracing end point EN has not been reached, the process returns to step S1, and if it is determined that the tracing end point EN has been reached, the process is ended. Thereafter, the same process is repeated, and the tracer head moves along the path shown in FIG. 2 or 3.

[Effects of the Invention] As explained above, since the present invention simultaneously performs tracing feed and pick feeding, it has the advantage of being able to shorten the tracing path and therefore improving machining efficiency. .

[Brief explanation of drawings]

1 to 3 are diagrams showing tracing routes according to the method of the present invention,
FIG. 4 is a block diagram showing an example of a device used to implement the method of the present invention, FIGS. 5 and 6 are flowcharts showing the processing contents of the microprocessor 15, and FIG. 7 shows the tracing route of the conventional example. FIG. ■ is the tracer head, 2 is the stylus, 3 is the model, 4
1 is a displacement synthesis circuit, 5 is an adder, 6 and 7 is a speed signal generation circuit, 8 is a polarity inversion circuit, 9 is a distribution circuit, 10 is a gate circuit, 11x to 11Z are drive circuits, 12X to 12Z are motors, 13X to 13Z is a position detector, 14X to 142 are counters, 15 is a microprocessor, 16 is a memo IJ, 1
7 is an output section, 18 is an input section, 19.20 is a DA converter,
21 is an indexing circuit. Patent Applicant Fanasoku Co., Ltd. Patent Attorney Patent Attorney Gobe Tamamushi (two others) figure

Claims (1)

[Scope of Claims] Speed signals in the feed axis direction and the tracing axis direction are created based on displacement signals from a tracer head that traces the model surface, and the model moving the tracer head relative to the pick feed position until the tracer head reaches a position having a predetermined relationship with the pick feed position, and the tracer head reaches a position where the tracer head has a predetermined relationship with the pick feed position. By this, the model and the tracer head are moved so that the amount of movement of the tracer head in the pick feed axis direction is a predetermined amount according to the speed signal in the pick feed axis direction, the speed signal in the feed axis direction, and the speed signal in the profiling axis direction. The model and the tracer head are moved relative to each other until the amount of movement of the tracer head in the pick feed axis direction reaches a predetermined amount. A tracing control method characterized by moving.