JPH02260003A - Producing device for external form working data - Google Patents

Abstract

PURPOSE:To automatically rearrange many working graphic data in the order of smaller graphics by rearranging these graphic data in the order of smaller areas of rectangles where two points shown by the maximum and minimum coordinate values are defined as the diagonal points for each working graphic. CONSTITUTION:A keyboard 1 reads the working graphic data and a storage 2 divides the working graphic data for each independent working graphic to store them. A processing part 3 reads one of those independent working graphic data and calculates the maximum and minimum coordinates of the working graphic to obtain the points shown by the maximum and minimum coordinate values. Then the area of a rectangle where two points shown by the maximum and minimum coordinate values are defined as the diagonal points, and the rectangle areas of all working graphics are calculated. These rectangle areas are compared with each other to decide whether these rectangles should be rearranged or not. If so, the working graphic data are rearranged in the order of smaller areas. If not, it is checked whether the graphic data are rearranged in the order of smaller areas or not. If so, the process is through. If not, the process is repeated until the graphic data are rearranged in the order of smaller areas.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an apparatus for creating contour processing data for cutting a plate-shaped material using a cutter, a laser beam, a water jet, or the like.

[Conventional technology]

Generally, an external processing data creation device that creates and sends machining figure data to an automatic machine tool that cuts plate-shaped materials using a knife, laser beam, water jet, etc., sends the machined figure data in the order in which it will be cut. I have to. This number J indicates that it is recommended to process the machining figures from the inside in a connotative relationship so that the work can be continued without re-fixing the material each time the work is done, in case the material is distorted during machining. It is considered good.

Conventionally, as such an external shape machining data creation device, there is one that manually determines the machining head seat and creates and rearranges a large number of machining figure data in that order according to the method of machining. As shown in , it reads machining shape data, determines the inclusion relationship for each of its multiple machining shapes, and automatically rearranges the order of machining shape data so that included machining shapes can be machined from the inside. There is something like this.

[Problem to be solved by the invention]

However, with such conventional external shape machining data creation devices, the former manually determines the machining order and creates and rearranges the machining figure data, which places a burden on the worker when there are a large number of complex machining figures. This greatly reduces efficiency.

Further, in the latter case, it takes time to determine the connotation relationship of the machining figures, and the machining order cannot be determined unless all the machining figures are in a completely closed loop.

The present invention has been made in view of the above points, and an object of the present invention is to enable an external shape processing data creation device to automatically rearrange a large number of processed figure data in the order of the smallest figure.

[Means to solve the problem]

In order to achieve the above object, the present invention includes a machining figure reading means A that reads data of a plurality of independent machining figures including machining figures having a connotative relationship, as shown in the functional block diagram of FIG. Maximum/minimum coordinate value calculation means B calculates maximum and minimum coordinate values for each machining figure read by means A, and nine maximum coordinates calculated by maximum/minimum coordinate value calculation means B for each machining figure mentioned above. Rectangle area calculation means C calculates the area of a rectangle whose diagonal points are the value point and the minimum coordinate value point, and the area of each rectangle calculated by this means C is compared to determine whether the area of the rectangle is small. An object of the present invention is to provide an external shape machining data creation device including a data rearranging means for sequentially rearranging data of each machining figure.

(Operation) The external shape machining data creation device according to the present invention calculates the maximum and minimum coordinate values for each of a plurality of read independent machining figures, and calculates the two points represented by the maximum and minimum coordinate values for each of the machining figures. The areas of rectangles that are diagonal points (points at both ends of the diagonal line) are calculated and compared, and the processed figure data is sorted in descending order of the area of these rectangles.

〔Example〕

Embodiments of the present invention will be specifically described below with reference to the drawings.

FIG. 2 is a block diagram showing an example of the configuration of an external shape machining data creation device embodying the present invention.

This external shape processing data creation device consists of a keyboard 1° memory bag M2. It consists of a processing section 31 and a display section 4, and the processing section 3 is realized by a microcomputer.

The keyboard 1 is equipped with character keys (not shown), function instruction keys, etc., and is used by the operator to read machining figure data,
Input instructions for creating processed figure data.

The storage device 2 stores processing figure data, and the keyboard 1
Processing unit 3, which will process this processed figure data later in accordance with instructions from
Read out.

The processing unit 3 is in charge of controlling the entire device, and also performs processing for calculating the maximum and minimum coordinate values of each machining figure, finding diagonal points from the maximum and minimum coordinate values, and circumscribing each machining figure to the outside. Processing for calculating the area of a rectangle, processing for rearranging the order of each processed figure data in descending order of the area of the rectangle, etc. are also performed.

The display section 4 is a CRT display or the like, and displays machining figures and various operation messages to the operator.

Next, FIG. 3 is an explanatory diagram showing the flow of processing related to rearrangement of processed figure data by the processing section 3 described above.

First, represent the machining figures on the x-y coordinate system.

The minimum coordinate values (i.e., the leftmost X coordinate value and the lowermost X coordinate value) and the maximum coordinate values (i.e., the rightmost X coordinate value and the uppermost ), and find two points: the point represented by the minimum coordinate value and the point represented by the maximum coordinate value (a)
.

Then, the area of a rectangle whose diagonal points are the point with the minimum coordinate value and the point with the maximum coordinate value is calculated from the product of the difference in the X coordinate value and the difference in the 9 coordinate values between the diagonal points. .

Here, the diagonal points refer to two vertices at both ends of a diagonal line of a rectangle.

In this way, after calculating the area of the rectangle circumscribing each machining figure, compare the size relationship of the area of the rectangle (c), and rearrange each machining figure data in descending order of the area of the rectangle (2)
.

Next, FIG. 4 is a diagram showing an example of a group of processed figures on the X-Y coordinates, and the above-mentioned processing will be explained using this example.

4 types of independent machining figures 10 cut out from plate-shaped materials
, 11, 12, 15, respectively 11 becomes 10, '13
is included in 12 and is represented on the XY coordinate plane.

First, paying attention to figure 10, the minimum coordinate values of this figure are the X coordinate χmin of point P1 and the V coordinate yw of point P2 in the figure.
in, and the maximum coordinate values are the χ coordinate x wax of point P3 and the V coordinate y max of point P4.

The minimum and maximum coordinate values of this figure are A (zmin, ymin) and A' (xmax
.

(wax).

Then, a rectangle 14 having these two points A and A' as diagonal points circumscribes the figure 10 as shown by the dotted line, and its area is calculated by the following equation.

S= (xmax-Ocmin) x (, y wax
-y win) Similarly, the areas of rectangles 15, 18, and 17 that circumscribe each figure 11, 12, and 13 are calculated from the minimum and maximum coordinates of 12 from point B of the minimum coordinate value and point B' of the maximum coordinate value of 11. They are calculated from the coordinate values of points C and C' and from the 13 minimum and maximum coordinate value points D and D', respectively, using the above-described method.

In this way, rectangles 14 to 1 circumscribing each of the four figures
7 is calculated, the magnitude relationship of the areas of each rectangle is compared, and the processed figure data is sorted in descending order.

Here, the area of each rectangle is 17°15.18 in descending order.
．． 14, therefore, the process of rearranging the machined figure data in this order will now be described with reference to the flowchart of FIG.

First, the machining figure data is read and divided into independent machining figures.

Then, read one of the multiple independent machining figure data, calculate the maximum and minimum coordinate values of that machining figure, find the point represented by the maximum and minimum coordinate values, and use these two points as diagonal points. Calculate the area of the rectangle.

Once the rectangular area of one processed figure is determined, the next independent processed figure data is read and the same process is performed.

After calculating the areas of the rectangles for all the divided processed figures in this way, the size relationship of the areas of these rectangles is then compared to determine whether or not it is necessary to rearrange each piece of processed figure data.

Then, when rearrangement is necessary, each processed figure data is rearranged in ascending order, and when it is not necessary, the order is left as is, and it is determined whether all processed figure data are arranged in ascending order.

If this judgment is YES, the sorting process ends, but
If NO, the process returns to the step of comparing the size relationship of the rectangular area for each processed figure, and this process is repeated until all the processed figure data are sorted into It[ with the smaller rectangular area, and then this process is terminated.

〔Effect of the invention〕

As explained above, the machined figure data creation device according to the present invention sorts a plurality of independent machined figure data in ascending order based on the area of the rectangle circumscribing each of the machined figures, so that each machined figure has an inclusion relationship. Processing figure data can be arranged in ascending order of the machined figure, whether or not it exists.

Moreover, since the sizes of closed-shaped processed figures can also be compared, the above-described rearrangement can be performed even for closed-shaped processed figures that are particularly close to closed shapes.

Furthermore, the processed figure data created by this device is output to Jlli\ from small figure data, so
When processing plate-shaped materials, there is less deflection of the material,
It also contributes to improving machining accuracy.

[Brief explanation of drawings]

FIG. 1 is a functional block diagram showing the basic configuration of a machined figure data creation device according to the present invention, FIG. 2 is a block diagram showing the configuration of a machined figure data creation device implementing this invention, and FIG. FIG. 4 is an explanatory diagram showing the flow of processing in which the processing unit 3 rearranges the processed figure data shown in FIG. FIG. 5 is a flowchart of a process in which the machined figure data creation device of FIG. 2 rearranges the machined figure data. 1...Keyboard 2...Storage device 3...Processing section 4...Display section Fig. 3 Fig. 4 χmin max Fig. 1 Fig. 2 Fig. 5

Claims (1)

[Scope of Claims] 1. Machining figure reading means for reading data of a plurality of independent machining figures including machining figures having a connotative relationship, and calculating maximum and minimum coordinate values for each machining figure read by the means. and an area of a rectangle whose diagonal points are the point of the maximum coordinate value and the point of the minimum coordinate value calculated by the maximum and minimum coordinate value calculation means for each of the processing figures. a rectangular area calculation means for calculating the area of each rectangle, and a data sorting means for comparing the size of the area of each rectangle calculated by the means and rearranging the data of each of the processed figures in descending order of the area of the rectangle. An external shape processing data creation device characterized by the following.