JPH0457657A - Copying region setting method - Google Patents

Abstract

PURPOSE:To set accurately a copying region by setting a desired point in the longitudinal direction of a rectangular copying region and a finishing point in the direction perpendicular to the longitudinal one to make a copy setting region of a rectangle having a first side interconnecting a starting point and the desired point and a second side interconnecting the starting point end finishing point. CONSTITUTION:In a copying region setting method for copy working a workpiece according to a model, a rectangle surrounded by points Ps, Pa, Pb and Pc is a copying region 40, the point Ps is set to a copy starting point, a desired point Po1 is set in the longitudinal direction of the copying region 40 end a finishing point Pe1 is set in the direction perpendicular to that of the desired point Po1. A rectangle surrounded by the points Ps, Pe1, Pb1, and Po1 is a copy setting region 41. Since the copy setting region 41 is set by selecting the desired point in the longitudinal direction of the copying region 40, the deflecting of the copy setting region 41 is few even if the desired point Po1 is somewhat deflected from the point Pc, so that the copy setting region 41 can be accurately set.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for setting a profile area in profile processing in mold processing, etc., and particularly to a method for setting a profile area for setting a rectangular profile area.

[Conventional technology]

Generally, when machining a workpiece by following a model, it is often the case that only a part of the model is followed, rather than all of it. Therefore, prior to the profiling process, a profiling area is set. There is a method of setting the tracing area at three points: a starting point, a target point, and an ending point.

FIG. 3 is a diagram showing an example of setting a tracing area by specifying three points. The actual tracing area 40 to be set is a rectangular area surrounded by points Ps, Pa, Pb, and Pc. On the other hand, when setting a tracing area, a target point Po2 and an end point Pe2 are set. Therefore, the actual profile setting area 42 is a rectangle surrounded by points Ps, P○2, Pb2, and Pc2.

[Problem to be solved by the invention]

In this way, the necessary tracing area 40 and the tracing setting area 42 may deviate greatly.

This is because the stylus is manually moved to the target point Po2 or the end point Pe2 to set the target point P02 or the end point Pe2, which causes a positional shift of the target point Po2 or the end point Pe2. This is because the setting area 42 will deviate from the tracing area 40.

The present invention has been made in view of these points, and it is an object of the present invention to provide a tracing area setting method that can accurately set a tracing area.

[Means to solve the problem]

In order to solve the above problems, the present invention uses a method for setting a tracing area in tracing machining in which a workpiece is patterned by tracing a model, in which a target point is set in the longitudinal direction of a rectangular tracing area, and a target point is set perpendicular to the longitudinal direction. An end point is set in a direction, and a rectangle whose first side is a line connecting the start point and the target point, and whose second side is the start point and the end point is set as a tracing setting area. A method for setting a training area is provided.

[Effect]

The target point is set in the longitudinal direction of the tracing area, and the end point is set in the direction perpendicular to the target point. Next, the first point connecting the starting point and the target point is
Let the rectangle consisting of the side and the second side connecting the start point and end point be the tracing area. Since the target point is selected in the longitudinal direction, there is little deviation in the tracing setting area and accurate tracing setting area can be set.

〔Example〕

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

FIG. 1 is a diagram showing the relationship between the tracing area and the tracing setting area of the present invention. A rectangle surrounded by points Ps, Pa, Pb, and PC is a contour area 40. This tracing area 40 is the area in which the model is to be traced.

Point Ps is the starting point of the profile.

On the other hand, the target point Po in the longitudinal direction of the tracing area 40
Set l. In this setting, the stylus is manually moved using the operation panel to position the stylus, and after positioning, that point is set as the target point. Similarly, an end point Pel is set in a direction perpendicular to the target point Pol. As a result, a rectangle surrounded by the points Ps, Pel, Pbl, and Pol becomes the tracing setting area 41.

Here, the tracing setting area 41 is the tracing area 40 for tracing the target point.
Since the target point Pol is selected and set in the longitudinal direction of
Even if there is some deviation from c, the deviation of the profile setting area 41 is small. This becomes clear when comparing FIG. 3 and FIG. 1.

Note that the tracing direction can be parallel to the side ps-Pol, or conversely, it can be perpendicular to this side. Which one to choose depends on the shape of the model.

FIG. 2 is a block diagram showing the configuration of a profiling control device implementing the present invention. In the figure, a processor 11 reads out a system program stored in a ROM 12 via a bus 10, and controls the overall operation of the profiling control device 1 in accordance with this system program. RAM 13 stores temporary data. The non-volatile memory 14 is backed up by a battery (not shown) and stores various parameters such as the tracing direction and tracing speed input from the operation panel 2 via the interface 15.

Further, in order to set a profile setting area, the operation panel 2 positions the stylus 5 at a predetermined position on the model and sets a target point or end point.

The tracer head 4 provided on the profiling machine tool 3 has displacements εX, ε in the X-axis, Y-axis, and Z-axis directions caused by the stylus 5 at its tip coming into contact with the model 6.
y and ε2 are detected, digitally converted, and processed by processor 1.
Enter 1.

Based on the displacement amounts εx1εy and ε2, the instructed tracing direction, and the tracing speed, the processor 11 uses a well-known technique to generate an X-axis speed command VxSY-axis speed commands vy and z.
Generates an axis speed command Vz.

These speed commands are sent to D/A converters 16x, 16y and 1.
6z converts to analog, servo amplifier 17x, 17y
and 17z, and its output drives the servo motor 32. of the tracing machine tool 3. x, 32y and 32z are driven.

As a result, the tracer head 4 is moved between the two so that the relative positional relationship between the tracer head 4 and the model 6 is kept constant.
At the same time as the table 31 moves in the axial direction, the table 31 moves in the X-axis and Y-axis directions perpendicular to the plane of the paper, and the workpiece 35 is machined into a shape similar to that of the model 6 by the cutter 34, which is controlled along the z-axis in the same way as the tracer head 4. administered.

In addition, each of the servo motors 32x, 32y, and 32z receives a detection pulse FPxX each time they rotate by a predetermined amount.
Pulse coders 33x and 33 that generate FPy and FPz
y and 33z are provided. The current position registers 18x118y and 18z in the tracing control device 1 count up and down the detection pulses FPx, Fpy and FPz respectively according to the rotational direction to obtain the current position data Xa, Ya and Za of the tracer head 4. These position data are read by processor 11.

〔Effect of the invention〕

As explained above, in the present invention, the target point is set in the longitudinal direction of the tracing area, so even if the target point shifts, the displacement of the tracing setting area is small, and the tracing setting area can be set accurately.

[Brief explanation of drawings]

Fig. 1 is a diagram showing the relationship between the profiling area and the profiling setting area of the present invention, Fig. 2 is a block diagram showing the configuration of the profiling control device implementing the present invention, and Fig. 3 is the area to be profiled by specifying three points. FIG. 3 is a diagram illustrating an example of setting . s ol el Tracing control device operation panel Tracing machine tool tracer head Stylus model Work Tracing area Tracing setting area Start point Target point End point

Claims (3)

[Claims] (1) In the method of setting a tracing area in tracing machining in which a workpiece is patterned by following a model, a target point is set in the longitudinal direction of a rectangular tracing area, and an end point is set in a direction perpendicular to the longitudinal direction. A tracing area setting method characterized in that a rectangle having a first side as a line connecting the starting point and the target point and a second side as the starting point and the ending point is set as a tracing setting area. (2) The tracing area setting method according to claim 1, wherein the tracing direction is the longitudinal direction. (3) The tracing area setting method according to claim 1, wherein the tracing direction is perpendicular to the longitudinal direction.