WO1985004609A1

WO1985004609A1 - Method of displaying present positions in a wire discharge machining apparatus

Info

Publication number: WO1985004609A1
Application number: PCT/JP1985/000168
Authority: WO
Inventors: Mitsuo Kinoshita
Original assignee: Fanuc Ltd
Priority date: 1984-04-07
Filing date: 1985-04-05
Publication date: 1985-10-24
Also published as: JPS60213423A

Abstract

A general figure inclusive of a wire electrode passage (WUP) on the upper surface of work and a wire electrode passage (WDP) on the lower surface of work are displayed on a display screen. Further, present positions of wire electrodes on the upper and lower surfaces of work are indicated by markings (M1, M2) being superposed on the wire electrode passages (WUP, WDP).

Description

- Specification

現在 Current position display method in the EDM

Technical field

The present invention relates to a method for displaying a current position in a wire-cut electric discharge machine, and more particularly to displaying a wire electrode path on an upper surface of a work and a lower surface of the work, and displaying the work path. The present invention relates to a method of displaying a current position of a wire electrode on a wire electrode passage on an upper surface and a lower surface of a work so that the current position of the wire electrode can be identified.

Background art

As is well known, a wire electric discharge machine has a wire electrode extended between the upper guide and the lower guide, and discharges the wire to the wire electrode. 1: The workpiece is machined, the work is fixed on the table, and the X and X are set according to the command from the numerical controller along the machining shape. It can be moved in the Y direction. In this case, if the wire electrode is stretched vertically with respect to the table (work), the machining shape of the upper surface and the lower surface of the work becomes the same, and the upper guide The upper guide is displaced in the X and Y directions (U-axis and V-axis), for example, and the upper guide is displaced in a direction perpendicular to the direction of movement. If the electrode is inclined with respect to the work, the machining shape of the top and bottom surfaces of the work will not be the same, and the machining surface will be inclined, so-called taper machining .

FIG. 1 is a schematic explanatory view of such a taper process, in which a wire electrode WR force is applied to an upper guide UG and a lower guide DG. It is installed at a predetermined angle to the WK. Now, the lower surface PL of the workpiece WK has a program shape (the upper surface QU of the work WK may be a program shape). if the distance to force ^÷ I de UG force> et word over click underside J, the distance to the lower GUIDE DG or al word over click WK underside and S, Rushitaga stomach against the word over click underside PL The offset amount and the dit amount of de DG (1 and the offset amount d ₂ of the upper guide UG are respectively

d = (J + S) · t a n cr— S-t a n a— (d / 2)

= J ♦ t a n a— (ά. / 2)

Can be represented by Note that d is the processing width. Therefore, were example, if Wa off in accordance with the movement of the Ichigu cell Tsu bet amount tl _t, the on moths' I de UG d ₂ is you stretched a ring Lee Ya electrode WR in the jar by ing constant If the movement is controlled, wire electric discharge machining with a constant taper angle can be performed as shown in Fig. 2. In Fig. 2, the dotted line and the dashed line are the passages of the upper guide UG and the lower guide DG, respectively.

When taper machining is performed in such a wire electric discharge machine, generally, a program path on the lower surface of the work or the upper surface of the work, and a wire for the program. Thickness and tenon in each block. Or the position deviation vector (1 ^, V.) of the wire electrode on the upper and lower surfaces of the work at each block end, and the distance J, S is commanded, and machining is performed according to the command based on these data. FIGS. 3 and 4 are detailed explanatory diagrams of the taper addition method.

In Fig. 3, A, B, C, and D are the lower surfaces of the work, respectively. This is the point of the machining shape (wire electrode passage), and the straight line and arc connecting these points are commanded as the program passage. 'Its to, Uega Lee de passage in the profile g shape ^^ "1" in the A ₃ B _3, passage of Matashitaga Lee de DG is that Do and A _₂ B _2. Is a third diagram GUIDE and lower GUIDE on when you processed Te over tapered surface indicated by oblique lines of the movement amount downy click preparative Le V _u, the V _d below referring to FIG. ⁴ It is calculated as follows.

Start off professional Da La that you only at the starting point A of the non-passage AB cell Tsu capital base click Doo Le PL (= AA ₂₎ is the end point off that put to Ri Owa before blanking lock of the lower GUIDE DG Se Ri Oh with di-door base-click door Lumpur and equal rather than known, also the starting point off cell Tsu capital base click Doo Le PU (= AA ₃₎ are you to Ri Owa before blanking lock of the above moth I de UG This is also known by the destination offset vector. Therefore, if the end point offsets NL (= BB ₂ ) and NU (= BB ₃ ) to the lower guide and upper guide at the end point B of the straight line ^ are obtained. The lower guide travel distance V _d (= A. B ₂ = AB) The upper guide travel vector V _u (= Β ₃ ₃ ') is

V ”= AB + NL—PL (1)

V = (PU-PL) one (NU-NL) (2)

It can be calculated from The coordinate value of the point B ₂ is parallel to the straight line AB and separated from the offset vector by the offset vector A ₂ B _2, and the arc BC is concentric and the radius is the offset amount '' It can be obtained as the intersection with a different arc B ₂ C _2, and point B is known at the commanded point and must be the end point offset from the lower guide to the lower guide. The vector NL (= BB ₂ ) is obtained. On the other hand, the end point till the upper guide -i-The vector NU is given by the following equation because the ratio of NU to NL is equal to the ratio of PU to PL:

NU = BB = -NL-I PU | / I PL I (3)

Can be obtained from Then B points you corresponds to the point A and A ₃ point can the _two points A is moved in parallel along a straight line A ₂ A ₃ to line AB reaches the _two points B 'and beta _3' under GUIDE movement amount downy click preparative Le V _d and the upper if

Guide travel distance vectors V _u are

V _d = A ₂ B ₂ = AB + BB '(1)

V _u = B ₃ 'B ₃ (2)'

DOO Ri Na, this is found downy click preparative Le V _u, V _ri is the start and end points off set base click preparative Le PU, PL, NU, if expressed have use the NL and AB (1) ', (2 ). Their to, distributed Pulse Ri by the and this that perform operations Pulse distributed have use X-axis and Y-axis components (X d, Y d) below guide moving amount downy click preparative Le V _d a a scan occurs, the distribution and driving the lower GUIDE based on pulse, and the upper guide movement amount Paix click preparative Le V _u of U-axis and V-axis components (X II, Y) use the Itepa Le If the distribution pulse is generated to generate an S3 pulse and the upper guide is driven by the distribution pulse, the electric discharge machining of the tapered surface shown by oblique lines in FIG. 3 is performed. In addition, the distribution pulse of the X and Y axes that drives the lower guide counts and counts down according to the moving direction. In other words, the current position (X, Y) of the wire electrode on the lower guide surface can be obtained, and the three pulses of u and V that move the upper guide Is counted up according to the moving direction, The relative position of the upper guide to the lower guide (counting the position of the wire electrode on the upper guide surface and the lower guide) In the plane, the axial position deviation u, v) between the wire electrode positions can be obtained.

In the conventional display of the current position of the wire electrode, the lower guide position (X, Y) and the upper guide position (U, V) are digitally displayed. It was a thing.

However, in the method of digitally displaying the position of the wire electrode, the wire electrode is visually subjected to electrical discharge machining in which taper surface the taper surface is in. I can't figure out if it's there. Also, the upper and lower guides ίόThe current position of the upper electrode and the lower surface of the work are displayed more than the current position is displayed. Although it is possible to grasp it well, the conventional method displays the current position of the lower guide, so it is difficult to grasp the machining state.

From the above, the object of the present invention is to visually and easily recognize which taper surface the wire electrode is being subjected to in EDM in what inclined state. An object of the present invention is to provide a method for displaying a current position in a magnetic discharge machine.

Another object of the present invention is to provide a method for displaying a current position in a wire electric discharge machine capable of displaying wire electrode positions on the upper and lower surfaces of a work. . '

Still another object of the present invention is to display wire electrode paths on the upper surface of the work and the lower surface of the work, as well as to display the upper guide and the lower guide during the wire electric discharge machining. The current position is marked Another object of the present invention is to provide a method of displaying a current position in a spark discharge machine, in which a display is made so as to be distinguishable by a straight line and overlapped with the above-mentioned wire passage of the wire.

Another object of the present invention is to display the wire electrode paths on the upper and lower surfaces of the work and mark the current positions of the wire electrodes on the upper and lower surfaces of the wire electrode during wire electric discharge machining. Another object of the present invention is to provide a method for displaying a current position in a wire-punching machine, in which the wire is overlapped and displayed on the wire electrode path so as to be distinguishable by a straight line or a straight line.

Disclosure of the invention

The present method for displaying the current position of the wire in the wire electric discharge machine according to the present invention displays an overall view of the wire electrode passages on the upper and lower teeth of the wire and also displays the wire electrodes of the wire electrodes. The current position on the upper and lower surfaces, or the current position on the upper and lower guides is displayed by being superimposed on the wire electrode passage so as to be distinguishable by a mark or by a straight line. According to this method, the recessed state and the processed state of the coil electrode can be easily visually recognized.

BRIEF DESCRIPTION OF THE FIGURES

Fig. 1 and Fig. 2 are schematic illustrations of the taper, Fig. 3 and Fig. 4 are detailed drawings of the taper processing, Fig. 5, Fig. 6, Fig. 7 and Fig. 8 are FIG. 9 is a schematic explanatory diagram of a method of displaying the current position of the sensing electrode according to the present invention. FIG. 9 is a block diagram of an apparatus for realizing the present method of displaying the sensing electrode of the present invention. FIG. FIG. 11 is a perspective view showing a perspective view, FIG. 12 is a perspective view according to the present invention, and FIG. 13 is a perspective view showing the present invention. -It is an example explanatory drawing.

BEST MODE FOR CARRYING OUT THE INVENTION FIG. 5, FIG. 6, FIG. ^{7, and} FIG. 8 are schematic illustrations of a method for displaying the current position of a pair electrode according to the present invention. In Fig. 5, points A, B, C, and D- 'are points of the machining shape of the lower surface of the work (wire electrode passages on the lower surface of the work). So, the straight line connecting these points, the arc force? It is instructed as the program path WDP. In addition, the taper angle <x _x (i = l, 2, 3-) at each block b, (i = l, 2, 3) or each block The deviation vectors on the upper and lower surfaces of the work (, V.) (i = l, 2, 3, '...) Are the fingers along with the program path. The vertical distance from the lower guide to the lower surface of the work, the work thickness T, and the vertical distance between the lower guide and the upper guide 閭 (see Fig. 6) are also specified. It is. Each vertical distance is specified based on the lower guide.However, it is not always necessary to use the lower guide as a reference, and the upper guide or the lower surface of the work is not required. Of course, it can be a standard.

In Fig. 5, the straight lines and arcs connecting points Α ', Β', C ', D' · · · are the machining shape of the upper surface of the workpiece (the upper surface of the workpiece). In addition, the dotted line indicates the path of the upper guide, and the one-point line indicates the path of the lower guide.

The electrode path on the underside of the work coincides with the program path WDP. --By using the mouth dam data, it is possible to easily display the electrode path on the underside of the work on the display. O

On the other hand, the key electrode passage WUP on the upper surface of the work is required as follows. The position of point B ', which is the end of the first block and on the upper surface of the work of the lead electrode, is the nominal value. and揩令line AB or et T · tan a _t off Seta preparative les were linear L _t that put the click underside, the command linear B or found that put the word over click the lower surface of the second blanking π click b ₂

Asked or Ru as a Τ · tan _two off cell Tsu door was the point of intersection of the straight line L _2. Also, Oh Tsu second blanking Hollow data click b ₂ e emissions de, ball that put the word over click upper surface Wa Lee Ya electrodes Yi emissions preparative C 'coordinate value of the. Second blanking B di click b _{From the} command line BC on the lower surface of the work ₂ .

T * ta and _n or ₂ off Se Tsu preparative straight line L _2, a third blanking B data click - b ₃ word over click command arc from the CD T · tana that put on the lower surface 3 of the off cell di preparative les As the intersection with the arc ARC. Then, similarly, the current block b and the command path of the next block, the taper angle σ _;, _{i + 1,} and the work thickness T are sequentially used. If the position of the wire electrode on the top surface of the work at the end of each block is determined, the wire electrode passage on the top surface of the work is obtained.

When the position deviation vectors (11,, V.) on the work upper and lower surfaces at each block end are commanded instead of the taper angle; It is clear that the wire electrode path on the upper surface of the work can be obtained without performing the above calculation. And Example, a coordinate value of the first blanking lock Wa over click underside your only that endpoint B (,, y _t), the first blanking lock b _t d on to that you only of 'position镉If the difference vector is (,, V _χ ), the coordinate value of the end point on the top surface of the work of the first block 1 ^ is (X i + U i, y, + _t ) Become . By using these position data and the program path data on the lower surface of the work, the image of the pin electrode path on the upper and lower surfaces of the work is generated and stored in the screen memory. .

Similarly, buses AA ', BB', CC ', which connect the position of the lower electrode of the work and the position of the lower electrode of the work at the end of each block. Generate DD '* · ♦ images and store them in screen memory. In this state, if image information is read from the screen or memory and input to CRT,

7 As shown in Fig. 8 or Fig. 8, the wire electrode passages WUP and WDP on the upper and lower surfaces of the work and the buses (i = 1, 2, ...) are displaced. Displayed on the Ray device.

On the other hand, during wire electric discharge machining, the current position of the lower guide is

The current position (U, V) relative to (Χ, Υ) and the lower guide of the upper guide is monitored, and the following operation ((4) to (operation of the expression) is performed). The positions of the wire electrodes on the upper and lower surfaces of the work are determined, and the positions on the upper and lower surfaces of the work are determined by marks Ml and M2 (see Fig. 7). Is from the straight line SL

(See Fig. 8) Wire electrode passages on the top and bottom of the work

It is displayed over WUP and WDP. Referring to FIG. 6, the positions P _u (x _u , y _u ) and P _d (x _d , 7 _d ) of the wire electrodes on the upper and lower surfaces of the work are given by the following equations. Is calculated. However --The current position of the lower guide DG is (X, Y), and the upper guide

The relative current position against the lower GUIDE of the UG shall be the (U, V) der Ri lower GUIDE or al word over click upper surface until the vertical distance _{Z 2 (= Z ^ + T} ) .

x _u = U (z ₂ zz) + x (4)

x _d = U- (Z _t / Z) + x (6)

Note that if the current position u V of the upper guide is given as an absolute value rather than a target position deviation data for the lower guide, (4) to (7) ) Use U — X, V — Y instead of U, V — in the formula.

FIG. 9 is a block diagram of an NC device for realizing the present device display method of the present invention. In the figure, 1 is a processor, 2 is a ROM for storing a control program, 3 is a RAM for storing various data, and 4 is an NC tape (not shown). NC data reading device for reading data, 5 is a graphic display device, S is an operation panel, 7 is a pulse distributor, 8 is an interface X-circuit, 9 is a wire electric discharge machine.

The NC data reader 4 is read in advance by the NC data reader 4 and stored in the RAM 3. In this state, if the current position display is requested by operating the switch provided on the operation panel 6, the processor 1 sets the content i of the built-in register 1a to 1. Initial value.

Next, processor 1 is in the i-th Using the program data of the block and the (i + 1) -th block b _{i + 1} , as described above, the signal at the end of the i-th block b; Find the pole position on the top of the workpiece.

After that, the path data of the i-th block and the position of the wire electrode on the upper surface of the workpiece obtained above are displayed on the display of the graphic display device 5. B Input to the control unit 5a.

The display control unit 5a of the graphic display device is configured as a computer, and the processing units 5a-1 and R0M5 are provided. a — 2 and RAM 5 a — 3. When the above data is input from the processor 1, the processing unit 5 a-1 uses the input data to respond to the wire electrode paths on the upper and lower surfaces of the work. The image information is generated and stored in the RAM 5a-S, and at the same time, the image ^ relating to the block bus is generated and stored in the RAM 5a-3 as well. After that, the processing unit 5a-l is the image information stored in the RAM 5a-3 (the image information about the wire electrode passages and buses on the top and bottom of the mark). , Each of which consists of a straight line or an arc, the start point, the end point, etc.) are output to the vector generator 5b one by one. The vector generator 5b performs a normal linear or circular interpolation operation using the input image information, and outputs the generated supplementary pulse XP and YP in each axis direction. Input to counter 5c. A de Re scan mosquito c te. ⁵ c has a § Drain scan mosquito c te and § Drain scan mosquito c te for Υ for shaft illustrated such Iga X-axis, their respective for each axis Interpolation 'The pulses are counted, and each time the X-axis address counter and the X-axis address counter --Write "1" at the storage position of the screen memory 5d to be displayed. As a result of the above processing, images corresponding to the through-electrode paths on the upper and lower surfaces of the work of the i-th block and the bus lines of the block are stored in the screen memory 5d. If this is the case, the memory information is read from the screen memory 5d in synchronization with the direction of the beam of the CRT 5e, the luminance is modulated using the memory information, and Display the wire electrode path and bus bar on the top and bottom of the work up to the i-block. The timing signal for reading the stored information from the screen memo 'J5d' and the timing signal for pointing the beam are the timing signal generator. Then, the read control unit 5g reads out the memory information from the screen memory 5d based on the timing signal, and outputs the information to the synthesizing circuit 5li. The luminance information is input to the luminance control unit 5 i via the luminance control unit 5 i, and the luminance control unit 5 i performs luminance modulation based on the luminance information. The orientation control unit 5j orients the beam horizontally and vertically in synchronization with the timing signal. Here, 5k is a character: c ner, 5nv is an image memory for character image storage, and 5ιι is a read control unit.

In parallel with the image display processing by the graphic and display device 5, the process "1" is the numerical control data of the (i + 1) th block. O whether or not the program path data) includes M02; indicating the end of the program.

If M 0 2; is included, the wire electrode passages on the upper and lower surfaces of all the blockwork and the end of each block The processing ends when all the bus lines are stored in the screen memory 5d. Its to, thereafter said screen Note Li ⁵ d or et al Symbol to by Ri CRT 5 e to a child reading a billion information FIG. 7 or on the Let's Do word over click shown in FIG. 8, the lower surface The wire electrode passages WUP, WDP, and the bus bar are displayed.

On the other hand, if M 02; is not included, i is updated as follows, and the above processing is repeated until M 02; is detected thereafter.

As described above, the overall view of the wire electrode passages on the upper and lower surfaces of the graphic display device 5 is displayed on the graphic display device 5. If the electric discharge machining is started, the mouth sensor 1 reads the NC data of the i-th eye and the (i + 1) th block from the RAM 3 as l → i. Start the well-known wire electric discharge machining process described in the section “Background technology>”. In the pulse distribution process, the movement amount to be moved in each axis direction (X, Y, U, and V axis directions) in a Δ Δ seconds predetermined for each block. Υ, AU, Δν are obtained using given path data, taper angle a; or position deviation vector ( _{U i} , V.) This is done by inputting to the pulse distributor 7 every second until the block reaches the block. The current position (X, Y) of the lower guide and the current position (U, V) of the upper guide in each axis direction are calculated by the following formula every ΔΤ seconds. Monitored.

X ± AX ~ * X --

Y Y Y → Y

U soil Δυ—U

V soil v → v

However, X, Y, U, and V are recorded in RAM3, and the above-mentioned middle code is in the moving direction.

Thus, when the wire electrode reaches the block end, the processor 1

i + l → i

As a result, while updating i, the NC data of the next project is read from RAM 3 and the above processing is executed until M02 indicating the program end is read. .

On the other hand, in parallel with the above-mentioned electric discharge machining process, the processor 1 obtains the current position data X, Y, U, and V of each axis stored in AM 3 at every fixed time f. (A) When displaying the current position of the upper and lower guides, the position of the lower guide (X, Y) and the position of the upper guide (X + U, Y + V) are graphed. When inputting to the display device 5 and (b) displaying the current position on the upper and lower surfaces of the work, the following formulas (4) to (7) are used. on the ring over click, the current position of the Wa i turbocharger electrode that put on the bottom surface _{_{(x u, y u),}} (x d, 3r d) seek, grayed La off i child is found click de office-flops Tray Input to device 5.

When the current position of the wire electrode is input, the display control unit 5a of the graphic display device 5 is configured to operate the character generator. From 5k, a predetermined mark image according to the current position on the top surface of the work or the upper guide, and ヮ — Reads the specified mark image corresponding to the current position on the bottom surface or the bottom guide, respectively, and stores it at a predetermined position in the screen memory 5 m. Note that the character generator 5k stores a plurality of mark images, for example, as shown in FIGS. 10 (a) to (i). By reading a predetermined mark image and storing it at a predetermined position in the screen memory for character image 5 m, the CRT 5e The mark can be displayed at any position on the screen. That is,

The one-character display area of the CRT screen is divided into 3 x 3 (= 9) value sub-regions, and each sub-region is nullified and a 9-value mark image (Fig. 10 (a)) ~ (I)) Power S character: c is recorded in 5k. Therefore, if the mark images shown in FIGS. 10 (a), (b) and (c) are sequentially stored in the same character display area of the screen memory 5m, the CR Τ The mark displayed in the box is moved horizontally by a 1Z3 visitor with a width of one character. The read control unit ₅ η read-the data I Mi in g signal onset generation unit 5 f or et al. Timing of signals in synchronization with screen Note Li 5 m or al Symbol billion information to, the Re this synthesis circuit Input to the brightness control unit 5i via 5h. As described above, the marks Ml and M2 are displayed at the current position of the back electrode on the top and bottom surfaces of the work, as shown in FIG. .

Thereafter, every time a new wire electrode position is input from the processor 1, the display control unit 5a stores the mark stored in the screen memory 5m. Update images and their locations -1-The mark M 1 M 2 (see Fig. 7) is always displayed at the current position of the wire electrode.

The above is an example in which the current position of the wire electrode is displayed by a mark. However, the present invention is configured to display the wire electrode position by a straight line without using the mark. It can also be. However, in this case, in addition to the screen memory (for example, the screen memory 5d in FIG. 9) for storing the entire image of the electrode passages on the upper and lower surfaces of the work, a wire is also provided. It is necessary to have a screen memory for storing a straight line image connecting the current positions of the contact electrodes. If the current position of the wire electrode is input from the processor 1, the display control unit 5a connects the input wire electrode current position. Linear image data is generated and input to a vector generator 5b, and the vector generator 5b 'executes a linear interpolation operation based on the linear image data, and the obtained linear image data is obtained. The distribution pulses XP and YP are output to the above-mentioned separate screen memory address counter for counting, and the new screen memory is counted as an address counter. Then, '' 1 '' is sequentially written in the storage position specified by the data to store the straight line image. Then, the straight line image is read out in the same manner, and is displayed on the CRT 5 e so as to be superimposed on the entire view of the wire electrode passage.

Although the above description is for a case where an image obtained by projecting the A-electrode passage on the XY plane is displayed on the CRT 5e, it can be controlled so that a perspective view is displayed. Hereinafter, a case where a perspective view is displayed will be described.

FIG. 11 is an explanatory view when a perspective view is displayed. Medium DPS is the origin of the CRT display surface (CRT surface), BRP is the origin of the drawing coordinate system (X-Y coordinate system) on the CRT surface, and its coordinate values are (0, 0), and DRP is the CRP surface. Is the origin of the three-dimensional coordinate axis (X—y—z) of the perspective view, and its coordinate values are (X, Y.), and are the three-dimensional coordinate axes of the perspective view displayed on the CRT surface. The angle between the X-axis and the X-axis of the drawing coordinate system (positive counterclockwise with respect to the X-axis) is the 3D coordinate 'axis in the perspective view displayed on the CRT surface. The angle between the X axis and the y axis. The coordinate values (X, y, z) expressed in the 3D coordinate system are

(8)

Is converted to the coordinate values of the drawing coordinate system (Χ, Υ). Therefore, the three-dimensional coordinate value ( _X , y, z), the angle <9, and the coordinate value in the drawing coordinate system of the three-dimensional coordinate origin DRP

Given (X., Y.), the graphic display device 5 (FIG. 9) performs a conversion process according to equation (8) on each three-dimensional coordinate value. A coordinate value in the drawing coordinate system can be obtained, and a perspective view can be displayed on the CRT surface using the coordinate values in the drawing coordinate system.

Now, assuming that the Z-axis coordinate value of the lower guide surface is 0, the three-dimensional coordinates of the points on the program path (wire electrode path) on the lower surface of the work. value Ri Do and _{_{(x d, y d, Z}} l), Wa - 3D seat Shirubechi of V o down bets on your only that Wa i catcher electrodes passage click upper surface _{(X _u,} y _u, Z ). _However , (x _d , y _d ) --Is the XY plane coordinate value of each point on the underside of the work,

(x _u , y _u ) are the XY plane coordinates of each point on the top surface of the work. The three-dimensional coordinate value of the lower guide is (X, Y, 0), and the three-dimensional coordinate value of the upper guide is (X + U, Y + VZ). Accordingly, the above-described angles and the coordinate values (X, Y) in the drawing coordinate system of the three-dimensional coordinate origin DRP are previously stored in the RAM 5a-3 of the display control unit 5a. the serial billion is not aft with, on Katsuwa chromatography click, that put on the bottom surface Wa Lee ya electrodes passage and Wa i catcher electrodes 3-dimensional coordinate values obtained by de office flop Tray controller ⁵ a current position In this case, the display control section 5a applies the transformation processing of the equation (8) to the input data, and the wires on the upper and lower surfaces of the work. Image data is generated in accordance with the electrode passage, bus bar, and the current position of the wire electrode, and a perspective view of the image data is shown in FIGS. 12 and 13 on the CRT surface 5e. Display.

In the above description, the color display is not described. However, using the well-known color display function of the graphic display device, it is possible to use the color display on the workplace. Needless to say, the wire electrode path bus bar, the marks Ml, M2, and the straight line SL on the lower surface can be configured to be displayed in different colors. In addition, such a force RAI-DAI consists of the image memory 5d with three screen memories J for red, blue and blue, respectively, for example, a wire electrode passage on the upper surface of the work. Is displayed in red, the wire electrode path on the underside of the work is displayed in yellow, each bus is displayed in blue, and the straight line SL indicating the current position of the wire electrode is displayed in 綠. , ヮ The image of the wire electrode passage on the top of the work is stored in the screen memory for red, and the image of the wire electrode passage on the bottom of the work is stored in the two screen memories for red and blue. The image of each bus is stored in the screen memory for blue, and the straight line image showing the current position of the pin electrode is stored in the screen memory for recording. An image may be read from each of these screen memories and input to a predetermined grid electrode of a color brown tube. When the current position of the wire electrode is indicated by a mark (1), the mark image read from the screen memory 5 m is displayed in the color tube. What is necessary is just to input into the edge grid electrode. .

As described above, according to the present invention, the wire passage on the lower surface of the program (the processed shape on the lower surface of the work) is the program passage according to the present invention. In addition to displaying the overall view of the wire electrode passage (the machining shape on the top of the work) on the top of the work, the mark also indicates the current position of the wire electrode. Or by displaying the wire electrode position in a distinguishable manner with a straight line connecting the wire current position, so that the current wire electrode force is visually recognized. The user can easily recognize at a glance which taper surface is being processed in what state, and it has become easier to grasp the processing state or the processing state.

Claims

The scope of the claims

1. Move the work relative to the wire electrode, and horizontally move the guide on which the wire electrode is stretched, and apply taper to the work. In the current position display method in the electric discharge machine, the program path data on one side of the upper surface or the lower surface of the work and the word in the height direction The relative position data of the upper surface, the lower surface of the work, the upper guide, and the lower guide, and the taper angle data of each block i or the work at each block Using the data of at least one of the positional deviation vectors (i ^, V.) on the upper and lower surfaces of the workpiece, the data on the upper and lower surfaces of the workpiece are used. The first step to find the electrode path and display it on the display device, the current position at the time of EDM Current position display method in wire electric discharge machines characterized by having a second step that is displayed so as to be identifiable on the play device o

2 ♦ The second step uses the above data to control the injection position of the upper guide and the lower guide with respect to the work, and performs taper processing. Steps for monitoring the current position (X, Y) and (U, V) of the upper and lower guides on the XY plane, the current positions of the upper and lower guides, The current position of the wire electrode on the top and bottom surfaces of the wires is determined using the relative positional relationship data of the bottom surface, the top guide, and the bottom guide. The discharge described in claim 1 which is characterized by having The current position display method on the processing machine.

3 _{# The} current position display method for a wire electric discharge machine according to claim 2, characterized in that the current positions of the upper guide and the lower guide are displayed by marks.

4. The wire electric discharge machine according to claim 2, wherein the current position of the wire electrode on the upper surface and the lower surface of the work is indicated by a mark. Current position display method.

5. The present position display method in a wire discharge machine according to claim 2, wherein the display of the position guides of the upper guide and the lower guide is displayed in a straight line.

6 ♦ The wire electric discharge machine according to claim 2, characterized in that the wire electrode positions on the upper surface of the work and the lower surface of the work are displayed in a straight line. Current position display method.

7. The wire according to claim 2, wherein an image indicating a current position of the wire electrode on the upper and lower surfaces of the work and the wire electrode is displayed in a predetermined color. The current position display method in the electric discharge machine.