JPH02108104A - Contour shape defining method - Google Patents

Abstract

PURPOSE:To define a contour shape easily and speedily by utilizing a method which copies and displays the 1st defined contour shapes one over another in order, and couples the shape elements of the respective copied shapes in copying order and defining one new contour shape. CONSTITUTION:The 1st defined contour shapes 1 are copied and displayed one over another in order and the start points P0 and moving directions DRC1 of the 1st contour shape are specified to find the shape elements of the 1st shape 1 from the start point P0 to the intersection with a next contour shape copied in the moving direction. Further, the intersection P1 of the 1st shape 1 and next copied shape (e.g. shape 2) is regarded as a next start point and the moving direction DCR2 of the shape 2 is specified to find the shape elements of the shape 2 up to the intersection with a next contour shape. Similarly, the found shape elements are connected to defines one new contour shape. Consequently, the method for copying and defining the shape is utilized to enable easy and speedy shape combinational definition.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a contour shape definition method, and particularly to a contour shape definition method for defining a contour shape using defined shape elements such as straight lines and circles.

<Prior art> In automatic programming that creates NC data using automatic programming languages such as APT and FAPT, (a) ftl! In addition to defining points, straight lines, and arcs using car symbols (shape definition), these defined points, straight lines,
A contour shape is defined using circular arcs, a tool path is defined along the contour shape (3a dynamic statement definition), and a part program is created using an automatic programming language.

(b) NC data in a format that allows the NC device to execute a part program using an automatic programming language (
Convert to NC data consisting of EIA code or ISO code).

In the contour shape definition method in such an automatic programming system, conventionally, a defined shape element such as a straight line or circle is drawn on a display screen, a starting point of one contour shape is specified, and the shape elements are sequentially drawn one by one from the starting point. The contour shape was defined by specifying it. For example, when creating a part program using an automatic programming language to move a tool along a contour OLF consisting of straight lines 81 to Sxs shown in FIG. ,~SIG to define the figure using the keyboard and tablet (see Figure 16, figure definition section), then pick each of these defined shape elements (drawn on the display screen) in turn with the graphic cursor GC8. For example, S1→S2→...→S engineering.

16 to define the contour shape OLF.

(Refer to the contour shape definition part), and thereafter, the machining point, end point, etc. of the contour shape OLF are specified by the motion statement definition, and the tool path along which the tool is moved is defined.

In addition, (1) in Fig. 16 is the coordinate value (X, y,), (x3
This definition sentence means the straight line S□ passing through ゜yi), and the same applies to the straight lines S2 to Sxs.

<Problems to be Solved by the Invention> By the way, some contour shapes are composed of only one basic shape. For example, the contour shape shown in FIG. 15 is constructed by overlapping two basic shapes 11 shown in FIG. 17. Even in such a case, it has conventionally been necessary to define each shape element constituting the contour shape one by one as described above, and then specify each element constituting the contour shape in order. For this reason, in a contour shape having a large number of repeated shapes as shown in FIG. 18, there is a problem that the more repetitive shapes there are, the more the operation for specifying shape elements must be repeated, and it takes a lot of time to define the contour shape. there were.

From the above, it is an object of the present invention to provide a contour shape definition method that can easily and quickly define a contour shape by using a method of copying and defining.

Means for Solving the Problems> The above problems include the steps of sequentially overlapping and displaying defined first contour shapes, and connecting the shape elements of each copied shape in the order of copying to create one new contour shape. This is solved by the process of defining .

Function> The defined first contour shape 1 (see Fig. 1, CRT screen) is sequentially duplicated and displayed, and by specifying the starting point P0 and traveling direction DRC1 of the defined first contour shape 1. , until it intersects with the next contour shape copied along the traveling direction from the starting point P6, the shape elements of the first shape 1 are determined, and the shape elements of the first shape 1 and the next shape copied (for example, shape 2 )
The traveling direction DR of shape 2 with the intersection point P□ as a new starting point.
By specifying C1, the shape elements of shape 2 are determined along the traveling direction until it intersects with the next contour shape, and thereafter, the similarly determined shape elements are connected to define one new contour shape.

<Example> FIG. 1 is a block diagram of an apparatus implementing the invention.

101 is a ROM in which loading programs etc. are stored.
, 102 is a processor that performs automatic programming processing, and 1o3 is an RA that stores the system program read from the floppy FL, various parameters, and processing results.
M, 104 is an NC data storage memory for storing NC data in an executable format finally created, 105 is a keyboard, 106 is a display device 1 (CRT), 107 is a disk controller, 1o8 is a tablet device,
A menu table 108b having various menu items is attached to the tablet surface 108a, and the tablet cursor 10
A predetermined menu item is picked at 8c. Note that by moving the tablet cursor 108c on the tablet surface, the graphic cursor on the display screen is moved. FL is a floppy disk.

FIG. 2 is an explanatory diagram of the main parts of the menu table 108b, and 11
is 1 point/point group definition field", 12 is "straight line definition field", 13 is r circle definition field", 14 is "special shape definition field", 15 is "shape creation field", 16 is "moving side", 17 is the "copying side", 1
8 is the "arrow key specification field", FMT in the "shape creation field" 15 is the "shape creation" item, LBF in the "movement field" 16 is the rXX axis wheel shaft movement item, and CPF in the [copy side] 17 is the "shape creation" item. "Copy" item, "Arrow key specification field" 18 "→, ↑, ←
, ↓, etc.'' are arrow keys for specifying the direction. still,
Arrow keys are similarly arranged on the keyboard 105. From now on, when we refer to arrow keys, we will refer to the arrow keys on the keyboard.

FIG. 3 is a flowchart of the process of the present invention, and FIG. 4 is an explanatory diagram of a contour shape including a large number of repeated shapes.

Hereinafter, the contour shape 0FL (
4) will be explained.

First, a basic shape 1, which is the basis of the contour OFL, is defined by a conventional method. That is, the operator enters the shape elements (straight lines S1 to S) constituting the basic shape 1 on the keyboard 105.
, using the tablet 108, and then sequentially designate shape elements to form the basic shape. As a result, the processor 102 executes the basic shape 1 part program (fifth
(see FIG. 1), and draw the basic shape 1 on the CRT screen (see FIG. 1) (step 201).

Next, the operator copies basic shape 1, that is, "copy shape" item C of "copy side" 17 on menu table 108b.
At the same time as picking the PF, pick the basic shape 1 on the CRT screen. Then, the processor 102 displays a question asking about the copying position, so input a position ff1 (position moved by xm in the X-axis direction and yn+ in the Y-axis direction) that partially overlaps the basic shape 1. Then, the processor 102 creates a part program for shape 2 (see FIG. 5(b)), draws it on the CRT screen, and writes the question text M (see FIG. 6).
is displayed (step 202).

The operator must decide whether to define the basic shape 1 and the copied shape 2 as one contour shape (step 203).
, if you want to define, pick the rYesj item on the CRT screen and perform the processing from step 204 onwards, and if you do not want to define, pick the "No" item. If the "No" item is entered, the processor 102 sets the CRT screen to the copy mode again in step 202. Therefore, in the same way as when defining shape 2, the operator places basic shape 1 in the X-axis direction xn and in the Y-axis direction yn at a position that partially overlaps shape 2.
3 and copy shape 3. Incidentally, FIG. 5(c) is a part program of shape 3.

Further, if shape 3 is defined, question sentence M□ is displayed as in step 202.

If the "Yes" item is picked in the judgment at step 203, the processor 102 displays a question on the CRT screen asking about the starting point of the contour shape to be created and the direction of movement that defines the contour shape. In response to this, pick the point P0 (Fig. 7) on the basic shape 1, and if you want the direction of movement to be Ca, select the keyboard 10.
5. Press the arrow key "→" above 5 (step 204).

When the starting point and the traveling direction are specified, the processor 102 sets 1→i and 1→j (step 2o5). Note that "i" indicates the order of definition of the elements within each shape, and "j" indicates the order of the shapes copied thereafter, with the original shape being "1".

Next, the processor 102 calculates the first element (straight line S1) from the starting point P0 and the traveling direction Ca1, and
. When heading from the direction of travel Ca, the straight line S□ is the next j
It is determined whether or not it intersects with the +1st shape (shape 2) (step 206). If it intersects, the process from step 210 onward is performed; if it does not intersect, the first element (straight line S,
) as the component (shape element) of the contour shape ○FC RA
It is stored in MIO3 (step 207). It is assumed that the elements stored as the shape elements of the contour OFC are sequentially displayed in different colors (see thick solid lines in FIG. 7) on the CRT screen.

Next, the processor 102 determines whether the shape elements up to the starting point P0 have been found (step 208).

If it has been determined, the contour shape definition process ends.

On the other hand, if it has not been found, find the next element of the j-th shape as i+1→i and proceed to step 2.
Repeat the process from 06 onwards.

If the first element intersects the next j+1-th shape (shape 2) in step 206 (FIG. 8), for example,
Find the coordinates (Xae ya) of the point P1 where the straight line aS (Fig. 4) intersects the shape 2, and
RAM10 uses the straight line S6 as a shape element of the contour shape OFC.
3 (Step Next, processor 102 stores j+
A question asking about the direction of movement of the lti-th shape is displayed, and in response to the question, the operator specifies the direction of movement using the arrow keys on the keyboard 105 (step 210
). For example, the traveling direction Ca2 is specified (FIG. 8).

When the direction of travel is specified, the processor 102 moves j+1→
jyl→i (Step 212), the intersection point (Pl) is set as a new starting point, and the intersection point and the traveling direction Ca,
The first element (straight line S, □) of the j-th shape (shape 2) is obtained from , and the processing from step 206 onwards is repeated.

FIG. 9 is an example of a CRT screen showing a case where the element of shape 2 intersects with shape 3 at point P2.

Figure 10 shows point P, and direction of travel C at (Figure 9).
a, and follow the flowchart in Figure 3 to create the contour shape OFC.
This is an example of a contour shape when .

Incidentally, when the traveling direction Ca4 is selected at point P2 (FIG. 9), the contour shape OFC' shown in FIG. 11 is defined.

Figure 12 shows the outline OF created by the process of the present invention.
This is an example of a C part program.

The above describes a method in which elements are connected one by one when defining one contour shape in step 203, but all contour shapes formed by appropriately connecting the sequentially overlapping and copied shapes are calculated in advance. , these may be sequentially drawn on a CRT screen so that a predetermined contour shape can be selected.

For example, if the contour shape that connects shapes 1, 2, and 3 is a closed shape as in several examples, the contour shape ○FC shown in FIG. 13 and the contour shape OFG' shown in FIG. 14 are sequentially drawn on the CRT screen. However, the operator may be able to select the "Yes" item in response to the question M2.

<Effects of the Invention> According to the present invention, defined first contour shapes are sequentially duplicated and displayed, and shape elements of each copied shape are connected in the order of copying to define one new contour shape. Since the configuration is configured to do this, it is possible to easily and quickly define combinations of shapes by using the method of copying and defining. As a result, NG data obtained using this shape can be obtained easily and quickly.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an apparatus implementing the present invention, FIG. 2 is an explanatory diagram of main parts of a menu table, and FIG. 3 is a flowchart of processing of the present invention. FIG. 4 is an explanatory diagram of a contour shape, FIG. 5 is an example of a part program for a copied shape, FIGS. 6 to 11 are examples of dialog screens of the present invention, FIG. 12 is an example of a part program for a contour shape, 13 and 14 are explanatory diagrams for selecting a contour shape, and FIGS. 15 to 18 are explanatory diagrams for a conventional method. 101...ROM, 102...Processor, 103...RAM, 104...NC data storage memory, 105...Keyboard. 106... CRT screen, 108... Tablet device patent applicant Fanuc Co., Ltd. agent Patent attorney Chiki Saito Figure 3 Figure 6 Figure 5 (a) Figure 5 (b) Figure 9 Figure 10 Figure 11 Figure 12 Figure 5u=P(χ2+ island, yz= ynlP(xs* χII, y34
yn) Figure 13 Figure 14

Claims (2)

[Claims] (1) In a contour shape definition method that defines a contour shape, the defined first contour shape is sequentially duplicated and displayed, and the shape elements of each copied shape are connected in the order of copying to create one new contour shape. A contour shape definition method characterized by defining. (2) By specifying the starting point and traveling direction of the defined first contour shape, find the shape elements from the starting point along the traveling direction until it intersects with the next contour shape, and then calculate the next contour shape. Claim (1) characterized in that the shape elements are determined in the same manner as the first contour shape, and the shape elements determined by repeating the above process are connected to define one new contour shape. The contour shape definition method described.