JPS62130407A - Generation method for rough program by digital data - Google Patents

Abstract

PURPOSE:To shorten the processing time by previously setting a drill cycle generation position on a model surface, executing a model's copying and automatically generating a rough program. CONSTITUTION:A rough program generator stores the drill cycle generation position to be roughly processed through the use of a drill in a drill cycle generation position memory 1 from an operation part, and outputs lattice-like coordinate positions xi and yi to a position comparator 5. A copying control part 3 abuts a tracer 21 on the model 20 fitted on a copying device 2 to collect its coordinates, and generates copying program data. A digitized data processing part 4 samples the coordinate values, and outputs them to the position comparator 5 and a drill cycle program generator 6. The position comparator 5 compares coordinate values X and Y among coordinates from the processing part 4 with those xi and yi in the memory 1. If they are the same, a coincidence signal SS is outputted to the generator 6 to generate the rough program.

Description

[Detailed Description of the Invention] (Technical Field of the Invention) This invention uses a trill that is performed prior to actual copying based on digitized data provided without copying the model shape with a copying device. This invention relates to a method for creating a rough cutting program using digitized data for automatic rough cutting.

(Technical background of the invention and its problems) Conventionally, when performing copying using digitized data, as is well known, an S34 model shape is copied by a copying device, and coordinate values ( A machine program is created using the machine data (digitized data), and copy processing is automatically performed according to this program. Because it is a big burden for

Prior to this profiling, rough machining is performed using, for example, a drill or the like to roughly follow the shape of the model.

However, in order to automatically perform the rough cutting process as described above, as shown in FIG. It is necessary to approach the tracer 21, digitize its coordinate values each time, and create a rough cutting program based on this digitized data, which is not practical because it takes a lot of time. Therefore,
In reality, workers manually operate a processing machine such as a drill to perform rough cutting that follows the approximate shape of the model, but such manual operations can only rough-cut the approximate shape of the model. Additionally, the entire copying process could not be automated, which was a major problem.

(Object of the invention) This invention was made under the above circumstances,
An object of the present invention is to provide a method for creating a rough cutting program using digitized data, which enables automatic rough cutting using a drill prior to profiling.

(Summary of the Invention) This invention relates to a method for creating a rough cutting program using digitized data using a drill.

A predetermined coordinate point is set in advance on the horizontal plane of the model shape, and when copying the model shape with a copying device, each coordinate point on the model surface corresponding to the predetermined coordinate point xd is measured, and one record is made. A MC program is created that uses a predetermined coordinate point and each coordinate point measured corresponding to the coordinate point to automate rough cutting using a drill.

(Embodiment of the Invention) In the method of creating a rough cutting program using digitized data of the present invention, a position for rough cutting is set in advance using a drill, and a copying device copies the model shape and copies it prior to copying. When digitizing the machining data, the coordinate values of the model shape corresponding to the preset positions are also collected, thereby creating a rough cutting program using the digitized data.

FIG. 1 is a block diagram schematically showing a rough cutting program creation device to which the method for creating a rough cutting program using digitized data of the present invention can be applied. The coordinate values (drill cycle occurrence positions) of the drill cycle occurrence positions are set in advance in a grid pattern, for example, on the horizontal plane (XY plane) of the model shape. The drill cycle occurrence position memory 1 stores the drill cycle occurrence position, and the grid coordinate values (x+, yJ) are stored in the position comparator 5.
It is output to.

As is well known, the copying control unit 3 brings the tracer 21 into contact with the surface of a model 20 made of a wooden mold or a plaster mold attached to the copying device 2 to make the tracer 21 trace along a predetermined path. Digitized data, that is, coordinate values (!a+yb, 2ab) of the model surface, are collected to create copying program data. The digitized data processing unit 4 outputs the coordinates i (xa, yb) from the scanning control unit 3.
, zab) and output to the position comparator 5 and the drill cycle program generator 6. The position comparator 5 receives coordinate values (xd, yb, zab) output from the digitized data processing section 4.
), its X, Y coordinate values (!a, yb) are converted to the coordinate values (!a, yb) stored in the drill cycle occurrence position memory 1.
Xi,! j), and if they match, a match signal S
S is output to the drill cycle program generator 6. Here, the judgment of whether or not the above matches is 1, for example, Xa-Xi 2+(yb-yj)2≦e -=...
- When <1> is satisfied, the above coordinate values (, xa, yb)
can be determined to match the above coordinate values (!+, y+). Here, "ε" used in the above equation (1) may be set by taking into account the error in the coordinate values to be detected. From above - negative signal SS
is output, the coordinate values (xa, yb, zab) output from the digitized data processing unit 4 as described above are
Receive the data and sit here? f(iQ(xa(=x+),
yb (-y"), zab (・z+J))
The coordinate values of the drill are collected as (x+, yi ji J) and a rough cutting program is created.

A rough cutting program creation method using digitized data using a rough cutting program creation device with such a configuration is as follows.
This will be explained below with reference to the flowchart in FIG.

When creating a rough cutting program using the digitized data of the present invention, first, the position (hereinafter abbreviated as grid coordinate point) where the drill cycle for rough cutting is to be performed is determined on the model 20 using a keyboard (not shown) or the like. Set up in the north of the horizontal plane (X-Y plane) in a grid pattern as shown in Figure 3 (A), and its coordinate values (!0.teo), (x+, yo)
, −, (x+ , yi ), −.

(in, y haze) is stored in the drill cycle occurrence position memory 1 (step S1), and as shown in FIG. Among the X and Y coordinate values, the Y coordinate value is kept constant, initially Y-yo) The surface of the model shape is traced on the X-Z plane (step S2), and the X, Y, Z
The coordinate values are collected in the digitized data processing section 4. Therefore, the position comparator 5 compares the X and Y coordinate values output from the digitized data processing section 4 with the grid coordinate values (n,
y and l, and if it is determined that they do not match according to the above equation (1) (step S3), the process returns to the above step S2 and the copying is repeated.

Collect the next X, Y coordinate values. When the two match, the position comparator 5 outputs a match signal SS to the drill cycle program generator 6, and the drill cycle program generator 6 synchronizes with the match signal SS and then performs digitized data processing. Digitized data (Z coordinate value) at grid coordinate points output from section 3
(Step S4), and until all grid coordinate points at this constant Y coordinate value (Y=yo in this case) are completed, that is, at the constant Y coordinate value (Y-yo
) All grid coordinate points (xo, yo) ~ (xn,
Step S5) returns to step S2 and repeats digitizing as described above until the Z coordinate value zoo""ZnO at the constant Y coordinate value (Y=yo) is stored. Step S5) After collecting the digitized data of the point, if the Y coordinate value for the next grid coordinate point remains (step S6), pick-feed the tracer and return to step S2, and similarly calculate the next °f coordinate. For the value (Y=y+), Z coordinate value Z at all grid coordinate points (ro, yi) ~ (xn, yl)
Find o+~Znl. ”-Step 52
After collecting the digitized data of all grid coordinate points by repeating the operations from S6 to S6, a drill cycle IC program is created based on this digitized data (step S7), and the creation of this rough cutting program is completed. An example of an NC program for rough machining created based on data digitized in this way is shown in Figure 4. The coordinate values (enclosed in parentheses in the figure) indicate the digitized data collected as described above, and the NC values excluding this digitized data column
A program is stored in advance in the drill cycle program generator 6, and the rough cutting program is completed by writing the digitized data collected like ha into this NC program. Here, the coordinate value 2o commanded following the 1 position symbol Z indicates the drill cycle start and end limits, and the coordinate values zI and z2 command the position at which a predetermined operation of the drill cycle is performed, and these coordinate values is set in advance when creating the NC program. Further, "F2O3" commanded following the position command indicates a predetermined feed function (feed rate, etc.), and is commanded when creating an NC program or before executing a drill cycle.

Figure 5 shows an example of the machining trajectory of the drill when a rough cutting program is executed using this digitized data.
The predetermined position according to the first step of the NC program shown in the figure? The drill sent to 1 (to, ya) follows the next command and moves to the roughing machining start limiter)Z as shown in Figure 5.
From o to a predetermined position on the model surface as shown by the solid line in the figure (
After being sent to the Z coordinate value (zoo) for rough machining, it returns to the machining end limit Za and starts the next rough machining position F.
By similarly roughing t(x+, yo) and repeating this operation for all the drill cycle generation positions in the lattice, it is possible to automatically carry out predetermined roughing using the NO program.

(Modified Example of the Invention) In the above embodiment, an example was shown in which the drill cycle generation position is set in a grid pattern on the model surface -F, but the drill cycle generation position is not limited to the grid pattern, for example, a "checkerboard pattern", etc. The occurrence positions may be set to be combined alternately.

(Effects of the Invention) As described above, according to the method of creating a rough cutting program using digitized data of the present invention, the drill cycle generation position is set on the model surface in advance, and the model shape can be changed by simply executing the copying of the model. A rough cutting program can be automatically created according to the situation. If a roughing program based on this digitized data is used, it is possible to fully automate the process from roughing to copying in copying, which not only shortens processing time but also enables significant labor savings.

[Brief explanation of drawings]

FIG. 1 is a block diagram schematically showing the rough reprogramming "A ii! 1" to which the present invention can be applied;
Figure 2 is a flowchart explaining the method of creating a rough cutting program using digitized data according to the present invention, and Figure 3 (
A) and (Sun) are diagrams explaining the method of setting the drill cycle generation position, and Figure 4 is a diagram showing an example of rough cutting reprogramming using digitized data created according to the present invention.
FIG. 5 is a diagram illustrating the rough machining operation according to the present invention;
FIG. 6 is a diagram illustrating a conventional rough machining method. DESCRIPTION OF SYMBOLS 1... Drill cycle generation position memory, 2... Copying device, 3... Copying control section, 4... Digitizing data processing section, 5... Position comparator, 6... Drill cycle program generation Instrument, 20...Model, 21 Tracer. Out Junjin agent Akata Yu Sanzuru 2 Vice 600 X (xo) Y (y*) GOI Z ff+ F500 0OZTt GOI ZfZ*ol F500 600Zt. GOOX(x, l YC7ml l σ(HZ7+ F2O3 GOOZzzri GOI Zff+ol F2O3 (roOZz. to GOOXbJ Yf2ml GOI 2 21 F500 0OZzt ao+ 7(z, information 1 t: 500 GOOZr. Cha 4 Incha 6 sides

Claims (1)

[Claims] Predetermined coordinate points are set in advance on the horizontal plane of the model shape, and when copying the model shape with a copying device, each coordinate point on the model surface corresponding to the predetermined coordinate point is measured, and the Creating a rough cutting program using digitized data, characterized in that an NC program for rough cutting with a drill is created using a predetermined coordinate point and each coordinate point measured corresponding to this coordinate point. Method.