JPS6057405A - Block searching device using graphic screen - Google Patents

Abstract

PURPOSE:To facilitate an operation to indicate a desired tool locus by searching an NC command block in response to the presence or absence of an intersecting point between a prescribed closed loop line and a tool locus which is displayed on a screen of an NC command block read out of a memory means. CONSTITUTION:A tool locus is produced by a tool locus drawing means BG and displayed to a CRT when a series of NC command blocks stored in an NC command program memory means MEM are executed. A prescribed coordinate system at the position of a CRT screen designated by a screen position detecting means GS consisting of a cursor shift control means, a cursor position detecting means, a light pen, a light pen indicating position detecting means, etc., i.e., the coordinate position of a drawing coordinate system is calculated by a coordinate position calculating means ZT. An intersecting point detecting means DET decides the presence or absence of an intersecting point between a closed loop line of a prescribed size including said coordinate position and the tool locus displayed at the CRT screen of an NC command block read out of the means MEM. Then the contents of the NC command block having an intersecting point are displayed on the CRT screen in characters by a searching block display means SC.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention provides a block search device using a graphic screen that searches for an NC command block corresponding to a tool trajectory displayed on a graphic screen and displays its contents in text on the screen. It is related to.

Conventional technology and problems Traditionally, tool movement using NC (numerical control) command programs! A graphic display device is known that displays the contents of an LL trace on a graphic screen as a locus. Conventional devices of this kind have a function of displaying the contents of the NC command program in addition to the function of drawing the tool path.
The display of tool → ilt traces and the display of NC command P1"Dram were performed separately and independently, and the correspondence between the two was not made clear. Therefore, even if you discover an error in a certain part of the displayed tool path and try to correct the NC command program corresponding to that part, you can easily select it from among the Ncth command block command programs corresponding to the part to be corrected. It wasn't. This is especially difficult when a part of the tool trajectory is displayed in an enlarged manner.

Purpose of the Invention The present invention improves these conventional drawbacks, and
The purpose is to simply indicate the tool trajectory you want to focus on with a cursor or light pen, input a search command, and then search the NC11 command block corresponding to the indicated tool trajectory.
The object of the present invention is to enable searching from among 1i instruction programs and displaying the contents on the screen.

Structure of the Invention FIG. 1 is an explanatory diagram of the structure of the present invention. NC command program storage means! The tool path drawing means 1 shows the traces of the tool III when executing a series of NC command blocks stored in one line.
3G and displayed on a CRT.

A predetermined coordinate system, for example, drawing coordinates, of the position on both sides of C R'r determined by the screen position setting means CS, which is composed of a cursor movement control means and its position detection means, or a light pen and its indicated position detection means, etc. The coordinate position of the system is calculated by the coordinate position calculation means ZT, and the intersection detection means BET calculates the closed loop line of a predetermined size including this coordinate position and the CR' of the NC command block read from the NC command program storage means 1. r Determine whether there is an intersection with the tool trajectory displayed on the screen. Then, the content of the searched NC command block having the intersection point is displayed as characters on both sides of the CRi'' by the search block display means SC.

Embodiment of the Invention FIG. 2 is a schematic block diagram showing an example of the hardware configuration of the apparatus of the present invention.

In the figure, reference numeral 1 denotes a microcomputer, which is connected via a lotus 2 to peripheral circuits 'ζ.

Reference numeral 3 denotes a writable/readable memory such as a magnetic bubble memory, in which a plurality of blocks or a plurality of NC command programs are stored. 4 is R for the control program
The OM contains a program for causing the microcomputer l to execute graphic creation, cursor control, program display, search control, etc. , 5 is a work RAM, which is used to temporarily store the calculation results of the microcomputer 1 and as a pointer. 6 is a CRT controller, which receives tool illt trace information and contents of the NC command program sent from the microcomputer 1;

A circuit necessary to process cursor movement information and display the tool trajectory, NC command program, and cursor on the CRT 7, such as a graphic memory.

It is equipped with a character memory, a character generator ROM, a synchronization signal generation circuit, a cursor control circuit, etc. The configuration of this CRT controller 6 is the same as the conventional one. Reference numeral 8 denotes a keyboard constituting a key input means, and the key input is read by the microcomputer l via an input/output control circuit 9.

The tool trajectory is displayed sequentially by the microcomputer 1 from the first block of the NC command program stored in the NC command program memory 3 or from a specified block.
When the block is a movement command block, its movement locus is determined by a known method, and when the movement locus is a straight line command, data regarding the coordinate values of the starting point and end point, for example, and circular arc ttt commands are read. For example, data regarding the coordinates and radius of the starting point and ending point can be sent to the CRT.
For example, as shown in FIG.
The tool path 31 is drawn on the screen 30 at T7. Here, the regions 11 to ln of the tool trajectory m31 each correspond to one separate NC command block. Also, the actual tool movement distance and the drawn tool f! The ratio to the length of the IL trace, that is, the drawing magnification can be determined from the keyboard 8 or the like, and it is also possible to display a portion of the tool trajectory 31 in an enlarged manner.

Note that the origin of the actual tool movement trajectory and the origin of the drawing coordinates are associated in advance.

In addition, the display of the NCJil command program is performed by the microcomputer I reading the NC command block stored in the NCfIt command program memory 3, and displaying it as CI?
This is done by giving Tconl-[''-ra6. Fourth
The figure is a diagram showing an example of NC command program display. The configuration described above has been known for some time.

For example, when a user discovers a problem in the part of the tool path 31 surrounded by broken IJi 132 shown in FIG. 3, conventionally, in order to find the NC command block corresponding to that part, the NC The operator must call up the command program on the screen and examine the contents of the block himself to find the desired block. However, according to this embodiment, it is possible to automatically detect the NC command block as described below.

FIG. 5 is a flowchart showing the operator's procedure when executing a block search using the apparatus of this embodiment.

First, the operator operates the keyboard 8 to record the tool ldL trace of the NC11 command program that he wants to check on the CRT 7.
display on the screen. Next, the operator
Press the cursor movement key 1 or cursor to move the cursor 33 to the part of the tool path for which the block search is desired, as shown in FIG. Then, when the keyboard 8 is operated to input a search continuation command, a search is performed for the NC command block corresponding to the tool trajectory designated by the cursor 33. When the search is completed, the searched NC command block is displayed, for example, in the lower area of the screen as shown in FIG. When the search end command is input, the search operation ends. In addition, if the searched block is not the target block, input the search continuation command from the keyboard 8, and the continuation of the NC command program will be searched, and if it is found, the searched block will be displayed on the screen in the same way as before. be done.

FIG. 6 is a flowchart showing an example of a software configuration for realizing the block search function.

When the microcomputer 1 starts the search process,
First, click the cursor 33 displayed on the CRi” 7 screen.
(Sl), this is the CRT
This is done by reading the contents of the horizontal and vertical cursor display position registers of the controller 6. Next, the microcomputer 1 calculates where the cursor display position is in the t111 image coordinates (S2). For example, if we consider the drawing coordinate diameter x-y where the origin of the tool movement path is the origin 0 as shown in FIG. 7, the first movement command block is 20c++1. If the command is to move each tool by 30 cIm in the Y-axis direction, when the drawing magnification is l/10, the trajectory of the corresponding tool on the screen will be 201 in the X-axis direction and 201 cm in the Y-axis direction, as shown by the solid line 80 in the figure. is given by the line segment connecting the point p of the 30 fins and the origin 0. If the cursor 33 is at the position shown in the figure, the position of the cursor 33 on the screen is determined by the method described above, and the position of the moon origin O is also determined, so the coordinate values of the drawing coordinate system of the cursor 33 are also determined. It turns out.

Next, the microcomputer l assumes a circle with a radius R centered on the drawing coordinate position of the cursor 33 (S3).

FIG. 8 illustrates this situation. When the cursor 33 is at the position shown in the figure, a circle C with a radius R as shown in the figure is created. In addition, in the seventh field, 11 to 44 trace the tools 11i1 corresponding to the first to fourth NC command blocks, respectively, and P and ~Ps are tool trajectories! Starting points 1 to 15 and ending points 70 to 73 indicate the minimum movable positions of the cursor 33 in the vertical and horizontal directions. The radius R above is the minimum movable hole% of this cursor! 1/ of the maximum value of It (cursor resolution) (in the illustrated example, the minimum movable hole M in the vertical direction)
It is desirable that the length be equal to or more than 2, preferably approximately equal to 1/2.

Next, the microcomputer 1 searches the beginning of the program file, that is, the NC corresponding to the currently displayed tool path.
Selects the first command block of the command program (S
4) Next, the NC command is read in accordance with the command, and one block worth of NC command is output from the one-gram memory 3 (S5). Then, it is determined whether or not there is an intersection between the tool trajectory of the NC command block and the above-mentioned assumed circle C (36), and if there is an intersection, the NC command block is transferred to the CRT controller 6.
Send to -ζ As shown in Figure 3, the searched NC command block is displayed in the lower area of the screen of the CRT 7 (37,
511). If there is no intersection, it is determined whether the start and end points of the tool trajectory of the NC command block are both included in the circle C (S9゜5IO), and if they are, ζ
Move to Step 7 S8. Also, if it is not included,
Advance the program file pointer to the next step (Sll) = return to step S5 and continue the search process. Further, when a search continuation command is manually input from the keyboard 8 after completing step S8, the process returns to step Sll and the search process is continued. Note that the detection of the intersection between the circle C and the tool trajectory and the detection of the inclusion relationship may be performed using the 1° 11 stroke coordinate system or may be performed using the actual machine 1 stop reference system.

For example, in Fig. 8, the tool path zl does not intersect the circle C, and since the circle C does not include its starting point 1) + and ending point 1) 2, the search operation continues, and the tool
When the NC command block corresponding to the IL trace 12 is processed, the contents of the NC command block will be displayed on the screen. Furthermore, when the search continuation command is input, each time the NC command block corresponding to tool iIk trace 7!3 is processed, starting point P3 of tool path 13. End point 1]
, are both inside the circle C, so at that time, the NC1rI instruction block corresponding to the tool path β3 is displayed on the screen.

As described above, according to the present embodiment, by simply moving the cursor to the part desired to be scanned and manually inputting the search 1 command, it is possible to generate the NcJlt command blotter block corresponding to that part. In addition, assuming a circle C with radius R centered on the cursor, we search for the NC command block of the tool 4IL trace that has an intersection with the circle C or includes both the start and end points, so the cursor 33 Even if the tool can only move intermittently as shown in Fig. 8, it is possible to specify the tool trajectory at any part of the screen, and it is also possible to move the cursor to the desired part by There is no need to align.Furthermore, if there are several tool INt traces that match the conditions, they will be found from the NC command block with the lowest number in the NC command program, and by inputting a search continuation command, the conditions will be met. Other matching N
It is also possible to display the C command block.

In the above embodiment, a cursor is used to indicate the tool trajectory corresponding to the NC command block to be detected, but it is also possible to give similar instructions using a light pen or the like. Further, although a circle centered on a point indicated by a cursor or a light pen is assumed, the shape of the assumed area is not limited to a circle, and may be a square, rectangle, or other shape.

Furthermore, if the range of this assumed area is narrow, it is possible that the tool path for 1 period may not be included in it, so there is an intersection with the tool path]! (It is also possible to omit the determination as to whether or not the tool path is included in the assumed area by excluding the difference by 1'.
The display mode of the tool trajectory corresponding to the C command block, such as color, brightness, line width, and line continuity (broken line, solid line), may be changed and controlled to be different from other tool trajectory. Such change control can be implemented using existing technology.

As described in detail, according to the present invention, by indicating a desired tool trajectory with a cursor or light ben, etc., and inputting a search command, the NC corresponding to the specified tool trajectory can be searched.
The command block is detected in the NC command program and its contents are displayed on both sides, making it possible to modify the NC command program much more easily than in the past. In addition, the search for the NC command block is performed using a closed loop line of a predetermined size and the 1 displayed on the CR7 screen of the NC command block read from the NC command program storage means.
! Since this is performed based on the presence or absence of intersections with the trajectory, there is also the advantage that it is relatively easy to specify the tool trajectory of interest using a cursor or the like.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of the configuration of the present invention, Fig. 2 is a schematic block diagram showing an example of the hardware configuration of the present invention, Figs. 3 and 4 are diagrams for explaining the display screen, and Fig. 5 is a block diagram. A flowchart showing an example of an operator's procedure when executing a search process, Fig. 6 is a flowchart showing an example of a software configuration that realizes Zorotsuku Search 1 function, Fig. 7 is an explanatory diagram of drawing coordinates, and Fig. 8 is a search It is a line diagram for explaining a method. 1 is a microcomputer, 2 is its lotus, 3 is an NC command program memory, 7 is a CRT, and 33 is a cursor. Patent applicant Fananku Co., Ltd. Representative patent attorney Gogo Tamamushi 1 person outside the department Figure 1 Figure 2 Figure 3 Day 4 Figure 5 Figure 7 Figure 8

Claims (1)

[Claims] a screen position specifying means for determining the position on the CR1'' screen, and a coordinate position calculating means for setting the LJ coordinate position in a predetermined coordinate system of the position on the CR1 screen specified by the means; A closed loop line of a predetermined size including the coordinate position and NCj
Intersection determining means for determining the presence or absence of an intersection of the NC command block read from the I-order Progera J1 storage means with the tool trajectory displayed on the CRi' screen, and the content of the NC command block at which the intersection occurred as text. A block search device using a graphic screen, characterized in that it comprises search block display means for displaying on the CR'I' screen.