JPS62120940A - Machining information preparing device for machine tool - Google Patents

Abstract

PURPOSE:To make the setting of rapid traverse and cutting feed rate operable owing to a machining drawing on a cathode-ray tube faceplate in an easy manner, by installing an interference function check device, a converter, a takeout, a processing device, a decision device and an editing device. CONSTITUTION:A converter 8 converting a mechanical system coordinate value into an image plane coordinate value is connected to a central processing unit 1, and an interference function check device 11 is installed between this CPU1 and another CPU50. First of all, on the basis of a Z coordinate at an end point, an interference point is checked, and if there is a Z-shift command, processing of a direction coefficient takes plate, and successively processing of Z and X machining coordinates is carried out, and when the check of the interference point is over, judgment processing for an interference pint counter and a shift point counter takes place, therefore rapid traverse of cutting feed are processed. Thus, each program of one block unit for tool shifting is no longer required to prepare one by one, and since it can be preoperated by a machining drawing on a CRT faceplate, setting of the rapid traverse and the curring feed can be easily done by anyone concerned.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention provides fast running and cutting feed speed when performing cutting.
This invention relates to a machining information creation system T for a machine tool for selecting and moving a machine tool based on a machining drawing imaged on an RT screen.

[Conventional technology]

Conventionally, when performing a cutting process, NC cutting program data is stored in an NC cutting program data memory in advance, and the tool is machined using the NC cutting program data from the NC cutting program data memory. I am moving it.

That is, when creating NC cutting program data, a method was used to create a program and move the rapid running and cutting feed rate one block at a time.

[Problem that the invention seeks to solve]

However, when creating a conventional NC machining program, a program for tool movement is created block by block, which is very time-consuming and inefficient.

The purpose of the present invention was proposed in order to solve the problem in view of the above circumstances, and it is designed to rationally perform fast running and cutting feed based on the machining drawing imaged on the CRT screen. The purpose of the present invention is to provide a processing information creation device for machine tools.

[Means and effects for solving the problems] In order to achieve the above object, the present invention is a machine tool processing method that attempts to rationally perform fast running and cutting feed from a processing drawing imaged on a CRT screen. The information creation device includes an interference function check means for checking interference using coordinates on a CRT screen, a conversion device for converting mechanical coordinate values to coordinate values on a CRT screen, and a CRT. An extraction means for extracting an interference coordinate value or an interference cancellation coordinate value based on an interference signal on a screen, and an arithmetic processing means for processing by adding a coefficient based on a signal of the interference coordinate value or interference cancellation coordinate value extracted from the extraction means. , a determining means for determining a fast running instruction or a cutting feed instruction based on an interference signal or an interference cancellation signal, and an editing means for editing machining data based on the determining means.

By using the machining information creation device of the present invention, the user is freed from having to create machining programs for fast running and cutting feed one by one and inserting them into a series of NC machining programs to perform machining. The machining drawing is displayed on a CRT screen, and the operator can easily perform fast running or cutting feed operations based on the machining drawing. Therefore, rapid running or cutting feed can be set more rationally and easily than in the past.

〔Example〕

Hereinafter, one embodiment of the present invention will be described in detail based on the drawings.

(1) First, the basic principle of the present invention will be explained.

Figure 2 (a) and Figure 2 (rl) are model diagrams showing the state in which the workpiece to be machined is attached to the chuck and the cutting edge of the tool is moving, and Figure 2 (a) is shown in the machine coordinate system. , FIG. 2 (rl) is the coordinate system converted to the CRT screen.

In FIG. 2(a) and FIG. 2(rl), a workpiece W is gripped by a jaw attached to a chuck C.

In FIG. 2(a), a machine origin 09 of the machine coordinate system is provided on the opposite side of the chuck C, and the end face axis of the chuck C is set as the machining origin 0p of the workpiece coordinate system.

Machine origin σH and machining origin? Let the distance between Thp (Xo, Zo) on the axis center line be X, and the distance between the machine origin σ and the end face of the chuck C, which is the machining origin σp, be ZMG. Is point A the tool cutting edge point and the machining origin of the machining coordinate system? The X-axis and Z-axis coordinates from 5p are respectively Mx, Mz1. The purpose is to easily create position information that allows the rapid running and cutting feed to be moved as indicated by the dotted lines from this tool cutting edge point A (M x + , Mzi).

Figure 2 (El) shows the mechanical system coordinates shown in Figure 2 (A) as C.
This is the coordinate system on the RT screen. That is,
With point B as the origin, the machine origin 0 is shifted to 0,', and the tool cutting edge point A is positioned at a position shifted to A'. If the distances between the origin B (0, 0) and the machining origin Op' are XC1 and ZCll, respectively, the coordinates of the machining origin p' are (
XcIl, Zc++). Machine origin 715M/
And the origin of processing? The distance from 5p' is X CG + Z
It will be CG.

Also, the position of the tool cutting edge point A' is
The purpose is to create position information so that the fast running and cutting feed can be moved as shown in the dotted lines by setting the axes and Z axes as Cx, Cz, respectively.
The purpose is to convert the coordinate system to the coordinate system on the CRT screen of I+) using a conversion device, thereby making it easier to judge whether the cutting speed is fast or not.

FIG. 2(c) is an enlarged view of only the workpiece W and the tool cutting edge T held by the jaws attached to the chuck C on the CRT screen of FIG. 2([+)].

The point E where the tool cutting edge T moves in the X and Z axes and the movement path contacts the end surface of the workpiece W is defined as an intersection point. The distance between a point slightly away from the end surface of the workpiece W is called a direction coefficient, and the direction of movement to the left is defined as the e direction, and the direction of movement to the right is defined as the ■ direction.

Furthermore, when attempting to perform outer diameter machining on the outer diameter of the workpiece W shown in FIG. 2(c), for example, as shown in FIG. Assume that they are located at K3 and K4. That is, if the tool cutting edge moves from the O direction, the direction coefficients for each interference counter at K, , , and 4 are all -2 mm, for example, and
If the tool cutting edge moves from the direction, each interference counter Kl, 2. The direction coefficients at 3 and 4 are, for example, all +
The length shall be 2 mm.

In addition, in each interference counter K +, K , K 3 and K 4, if the coefficient K is an odd number, KK = -1, and if it is an even number, KK = + 1, so that the tool cutting edge point, that is, for each interference counter.

K2. The coordinates of I and E4 are the coordinate values of each intersection, namely E I + E z, E: I and E4 (KKX
The value obtained by adding the direction coefficient) becomes the coordinate value. If the movement processing counter J in which the tool cutting edge moves is an odd number (Jl, Jl), Go. Fast running is performed and the movement processing counter J is an even number (J,
, J,), Gel cutting feed can be applied.

(2) The specific configuration of the present invention will be explained.

FIG. 1 is a control block diagram showing the configuration of the present invention.

In FIG. 1, various data are input and output from a keyboard with screen 2 to a CPUI via an input/output device 2a.

Furthermore, X- and Z-axis motors 3c for moving the tool are connected to the CPU 1 via an interpolator 3a and an amplifier 3b to perform position feed control. A touch sensor Ts for measuring the workpiece is connected via an interface 4, and a preset sensor Ps capable of measuring the four directions of the tool cutting edge is further connected via an interface 5 so as to emit measurement signals of necessary data. There is. The part-specific nibogram memory 6 stores the part-specific nibprogram data, and the tool information file 7 stores the preset sensor Ps.
The data of the tool T measured in is stored.

A converter a8 for converting mechanical system coordinate values into screen coordinate values is connected to the CPUI, and the converter 8 calculates the mechanical system coordinate values of the current position data taken into the current position data register 9 into screen coordinate values. The processed and converted screen coordinate values are CP
The necessary data is input to U50 and selected and stored in the chuck jaw, center shape range screen position data/memory 51 and material shape range screen position data/memo 1J52, respectively. The position data on the screen stored in the memory 51 and the memory 52 is taken into the image processing means 53, and then sent to the C on the screen keyboard 2 via the image display processing means 10.
Displayed on the RT screen.

Interference function checking means 11 is provided between the CPUI and the CPU 50, and checks whether the tool T is interfering with the workpiece W on the CRT screen, and if so, sends an interference signal to confirm that there is no interference. For example, an interference cancellation signal is sent to the CPU 1 via the OR gate 12.

In addition, the direction coefficient memory 13 stores direction coefficient = Z-axis movement direction approach coefficient and direction coefficient = XX-axis movement direction approach coefficient.
, Z-axis direction coefficient data are stored.

The machine coordinate value at the start point taken into the register 14 is taken into the AND gate 15, and the AND gate 15 is opened by the end point signal, and the machine coordinate value at the start point is taken into the arithmetic processing circuit 16. The arithmetic processing circuit 16
The mechanical coordinate values and direction coefficients (direction coefficients taken into the memory 13) taken in are taken into the arithmetic processing circuit 17, where the arithmetic processing of the intersection point + (KKx coefficient) is performed and output. The signal indicating the completion of one block from the start point to the end point is taken into the register 18.23, and
Before the completion signal taken in is received, the interference signal taken into the register 19 by the interference check function means 11 passes through the AND gate 20 and is taken into the interference coordinate value memory 21. Since the interference coordinate value/memory 21 has already taken in the interference coordinate value that has been processed by the arithmetic processing circuit 17, at the same time as the interference coordinate value is output, a 00° movement command is issued from the fixed memory 22, that is, a fast running command. Instructions are given.

The one block completion signal taken into the register 23 is taken into the AND gate 25. Before the interference signal captured in the register 24 reaches the AND gate 25, the completion signal passes through the AND gate 25 and is stored in the memory 2.
6 and Go from the memory 26. An instruction to move, ie, fast forward, is issued.

Before the one block completion signal taken into the register 27 rises, the interference cancellation signal taken into the register 28 and the sending coordinate value taken into the register 29 are taken into the AND gate 30.

G due to the feed coordinate value taken in 30
(11 Movement, ie, cutting, instruction is given.

Next, the completion signal after determining the intersection coordinates, which has been taken into the register 32, and the coordinate value of the intersection, which has been taken into the register 33, are each taken into the AND gate 40. Further, the G+1 movement, that is, the cutting feed instruction, which is captured in the register 34, or the Go, which is captured in the register 35. Either one of the movement or fast running instructions is taken into the AND gate 40 via the OR gate 38. Furthermore, the interference signal taken into the register 36 or the register 37
Either one of the interference cancellation signals taken in is taken into the AND gate 40 via the OR gate 39.

The respective signals and coordinate values taken into the AND gate 40 pass through the AND gate 40 and are taken into the processed data editing processing circuit 41.

The processed data editing processing circuit 41 performs processed data editing processing, and these values are taken into the edited program memory 42 and processed based on the edited program.

The operation of the present invention will be explained based on the flowchart of FIG.

In the 0th stage, it is determined whether the Z coordinate value of the end point is larger than the Z end face of the material. If it is determined that it is larger, in the 0th stage, it is determined whether the Z coordinate value of the starting point is larger than the Z end face of the material. . If the Z coordinate value of the starting point is not larger than the two end faces of the material in the 0th stage, the process proceeds to the 0th stage and an interference point check is performed. That is, the interference counter K is set to 0 at the 0th stage. In the 0th stage, it is determined whether there is a Z-axis command, and if there is a Z-movement command,
In the 0th stage, calculation processing of direction coefficient=Z power direction×approach coefficient is performed. If there is no Z movement command at the 0th stage, the direction coefficient=XX movement direction approach coefficient calculation process is performed at the 0th stage.

In the 0th stage, the intersection of the route and the material is checked. If there is no intersection at the 0th stage, the interference point check ends.

If there is an intersection, the interference point counter K is incremented by 1 in the [F] stage. In the 0th stage, it is determined whether the interference counter K is an odd number. If the number is odd, the coefficient KK is set to -1 in the 0th stage, and if the interference counter K is not an odd number, that is, an even number, the coefficient KK is set to +1 in the 0th stage. do. Z processing coordinate value (K) at stage 0
= K K x direction coefficient, ten intersection points and X processing coordinate value (K) = K K The x direction coefficient + intersection point is calculated and fed back before the 0th stage and processed until there are no more intersection points.

When the interference point check in the 0th stage is completed, the movement processing counter is set to O in the 0th stage. At the 0th stage, it is determined whether the interference point counter and the movement processing counter J match. The interference point counter K does not match the movement processing counter J,
If it is smaller, the movement processing counter J is incremented by 1 at the 0th stage. At the 0th stage, it is determined whether the movement processing counter J is an odd number, and if it is an odd number, Go at the 2nd stage. Moving X intersection (J
), fast running processing is performed at the Z intersection (J). If the movement processing counter at the 0th stage is an even number rather than an odd number, the CO+ at the 0th stage
Cutting feed processing is performed at the movement X intersection (J) and Z intersection (J). If the Z coordinate value of the starting point is smaller than the Z end face of the material in the 0th stage, and if the interference counter K matches the movement processing counter J in the 0th stage, the process advances to the [phase] stage. In the [phase] stage, it is determined whether the end point is within the material or not, and if it is within the material, the 0th stage is G. , movement (towards the end point) cutting feed is applied, and if the end point is not within the material in the 0th stage, a fast run of 00° movement is performed in the 0th stage, and the process proceeds to the next process.

(Effects) The device of the present invention enables rapid cutting and cutting feed settings to be operated using the machining drawing imaged on the CRT screen in advance, so programs can be created one block at a time, unlike conventional methods. Therefore, the creation of the NC cutting program is much more streamlined than in the past, and the settings for fast running and cutting feed can be easily created even by an experienced worker.

In turn, this has the effect of helping to improve productivity in cutting.

[Brief explanation of drawings]

FIG. 1 is a control program diagram showing a specific configuration of the present invention. Figures 2 (a) to (d) are diagrams explaining the basic principle of the present invention. Figure 2 (a) is a processing drawing drawn on the machine coordinate system, and Figure 2 (TI) is a drawing drawn on the machine coordinate system. It is a figure which shows the processing drawing converted into the coordinate system on a CR7 screen. FIG. 2(c) is a diagram showing only the processed drawing, and FIG. 2(d) is a diagram showing the processed drawing with various definitions for explaining the present invention. FIG. 3 is a flowchart diagram illustrating the present invention in detail. 1...CPU 2...Keyboard with screen 6.
・Niprogram memory 7 for each part ・Tool information file 8 ・Converter 10 for mechanical system coordinate values and screen coordinate values ・・
Image display processing means 11...Interference check function means 41...Processed data editing processing circuit 42...Edited program/memory 52...Material shape range screen position data/memory 53...Image processing/
Memory patent applicant Hitachi Seiki Co., Ltd. Figure 2 (a) Figure 2 (b) Figure 2 (c) Figure 2 (d) Figure 2 (e)

Claims (1)

[Claims] An interference function check means for checking interference using coordinates on a CRT screen, a conversion device for converting mechanical coordinate values to coordinate values on a CRT screen, and interference coordinate values or interference cancellation coordinate values based on interference signals on the CRT screen. an arithmetic processing means for adding and processing a coefficient based on a signal of the interference coordinate value or interference cancellation coordinate value taken out from the extraction means; a means of determining the
A machining information creation device for a machine tool, comprising: editing means for editing machining data based on the determining means.