JPH04362706A - Display system for numerical controller - Google Patents

Abstract

PURPOSE:To perform the machining simulation in accordance with the actual movement of a tailstock. CONSTITUTION:A tailstock 4 is animatedly plotted at the side opposite to the side where a material 1 is fixed by a chuck 2 based on the size of the materiel 1 inputted previously with a display control command of the tailstock 2 inputted interactively. At the same time, the tailstock 4 is moved or erased with a movement or erase control command of the tailstock 4 inputted interactively. Thus it is possible to perform the machining simulation in accordance with the actual movement of the tailstock 4.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a display method for a numerical control device that displays on a screen the shapes of materials, tools, etc. included in a machining program, and in particular, the present invention relates to a display system for a numerical control device that displays on a screen the shapes of materials, tools, etc. included in a machining program. This invention relates to a display method for a control device.

0002

[Prior art] When turning is actually performed using an NC lathe,
The time spent on turning may be wasted due to failure to obtain the desired shape or interference between the material and the tool. For this reason, it is inevitable that the operating rate of the machine tool will decrease. therefore,
There is a growing demand for a function that can perform machining simulation before turning and check the shape of the material after turning and the interference between the material and the tool. In response to such requests, some numerical control devices that control machine tools draw animations of machine tool machining simulations on the numerical control device's display screen based on the materials, tools, etc. included in the machining program. Functions are being added.

0003

[Problems to be Solved by the Invention] However, in machining simulations performed by conventional numerical control devices, the tailstock is displayed fixed at a fixed position. For this,
Even though there was a tailstock that actually worked during turning, it did not work on the display screen during machining simulation.

[0004]Therefore, there has been a problem in that a machining simulation is performed that differs from the actual operation of the tail stock. Further, there was a problem in that interference between the tail stock and the tool could not be accurately checked.

[0005] The present invention has been made in view of the above points, and provides a display method for a numerical control device that can perform machining simulation corresponding to the actual movement of the tail stock.
The purpose is to provide.

[0006]

[Means for Solving the Problems] In order to solve the above problems, the present invention draws animations of the shapes of materials, tools, etc. on a display screen based on control commands from a numerical control device, etc.
In a display method for a numerical control device that performs machining simulation, there is provided a display method for a numerical control device that controls the operation of a tailstock as the tool that supports the material.

[0007]

[Operation] Accurate machining simulation can be performed by displaying, moving, or erasing the tailstock on the display screen in response to the actual movement of the tailstock. In addition, accurate machining simulation allows for accurate checking of interference between the tailstock and tools.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 2 is a block diagram showing the configuration of an interactive numerical control device that is an embodiment of the present invention. The processor 11 controls the entire numerical control device based on a system program stored in the ROM 12. ROM12 has EPROM
Alternatively, EEPROM is used. RAM13 is SR
AM or the like is used to store various data or input/output signals. The nonvolatile memory 14 uses a battery-backed CMOS, and stores parameters, pitch error correction amounts, tool correction amounts, etc. that should be retained even after the power is turned off.

The graphic control circuit 15 converts the digital signal into a screen display signal and supplies it to the display device 16. As the display device 16, a CRT or a liquid crystal display device is used. The display device 16 displays the shape, machining conditions, etc. when creating a machining program in an interactive format.

The keyboard 17 includes symbolic keys, numerical keys, etc., and necessary graphic data and NC data are input using these keys. The axis control circuit 18 receives an axis movement command from the processor 11 and outputs the axis command to the servo amplifier 19. The servo amplifier 19 receives this movement command and drives the servo motor of the machine tool 20. These components are coupled together by a bus 21.

A PMC (programmable machine controller) 22 receives a T function signal (tool selection command) etc. via the bus 21 when executing a machining program. Then, this signal is processed by a sequence program, and the signal is output as an operation command to control the machine tool 20. Further, the PMC 22 receives a status signal from the machine tool 20, performs sequence processing, and transfers necessary input signals to the processor 11 via the bus 21.

Connected to the bus 21 are software keys 23 whose functions change depending on the system program, etc., and a serial interface 24 that sends NC data to external devices such as a floppy disk, a printer, and a paper tape reader (PTR). This software key 23, together with the display device 16 and the keyboard 17,
It is provided on the DI panel 25. Also, on bus 21, N
In addition to the processor 11, which is a CPU for C, a bus 30
A processor 31 is connected which performs an interactive program creation function. Bus 30 has ROM32 and RAM
33 and nonvolatile memory 34 are connected.

The interactive data input screen displayed on the display device 16 is stored in the ROM 32. On this interactive data input screen, the entire motion trajectory of the tool is displayed as a background animation when creating the NC data. Further, the display device 16 displays tasks or data that can be set using the input screen in a menu format. Which item in the menu is selected is determined by using the software keys 23 arranged at the bottom of the screen corresponding to the menu. Software key 23
The meaning changes for each screen. RAM33 has SRAM
etc. are used, and various data for dialogue are stored here.

[0014] The input data is processed by a processor 3 for interaction.
1, and a workpiece machining program is created. The created program data is sequentially displayed as a background animation on the display device 16 used in an interactive manner. Further, the workpiece machining program stored as NC data in the nonvolatile memory 34 is also executed during machining simulation of the machine tool 20, and is displayed as a foreground animation.

Next, the operation of the present invention will be explained. When creating a machining program interactively, the processor 11
issues the command to the processor 31. The processor 31 that received the command to create the machining program stores the ROM
According to the control program No. 32, the graphic control circuit 1
5, an interactive data input screen is displayed on the display device 16. Here, the programmer creates a machining program by inputting data and the like according to the interactive data input screen. When the programmer inputs a machining program creation end command from the keyboard 17, the created machining program is stored in the RAM 33.

[0016] Then, the programmer selects keyboard 1.
When a command to simulate a machining program is input from 7, the processor 31 operates as follows based on the simulation program stored in the ROM 32. First, following the commands of each step of the machining program stored in the RAM 33, numerical calculation processing such as coordinate calculation is performed, and then a drawing command is given to the graphic control circuit 15. The graphic control circuit 15 that receives the drawing command draws an animation and displays various data on the display device 16. These series of processes are performed according to a flowchart described later.

Finally, the programmer selects keyboard 1.
When a command to create a machining program and to end the simulation process is input from 7, the processor 31 notifies the processor 11 that the process has ended. The processor 11 that has received the notification of the end of processing performs other processing.

FIG. 1 is a diagram showing a screen on which the tail stock of the present invention is displayed. The display device 16 displays the material 1
, chuck 2, cutting tool 3 and tail stock 4,
Both are animated. In addition, various data such as X-axis and Z-axis position information and processing contents of the software keys 23 are also displayed on the display device 16 on one screen at the same time. The material 1 is a workpiece for obtaining a target shape by a machining program. The chuck 2 consists of a chuck 2a and a chuck 2b, and fixes one side of the material 1 in order to cut the material 1. The cutting tool 3 is a tool that cuts the material 1. The tail stock 4 auxiliary fixes the other side of the material 1 when the material 1 is long and the amount of deformation of the material 1 is large with only the chuck 2.

Next, the operation will be explained. Judging from the size of the material 1 input in advance, the chuck 2 is
Draw an animation of the tail stock 4 on the opposite side to the side where the material 1 is fixed. The position where the tail stock 4 is drawn in animation is the position where the tip of the tail stock 4 and the end of the material 1 coincide. However, when an auxiliary hole is provided in the material 1, the animation is drawn as if the material 1 had entered the material 1 by the depth of the hole.

FIG. 3 is a diagram showing a screen showing the movement of the tail stock according to the present invention. Similar to FIG. 1, display device 1
6, a material 1, a chuck 2, a cutting tool 3, and a tail stock 4 are all drawn in animation. Also,
Various data such as X-axis and Z-axis position information and processing contents of the software keys 23 are also displayed on the display device 16 at the same time. First, the origin is defined as the position where the tip of the tail stock 4 and the edge of the material 1 match, and the right direction of the screen is defined as the plus point. Then, according to the movement control command for the tail stock 4 inputted in an interactive manner, the tail stock 4 moves by the commanded movement distance,
Anime drawn. Here, the movement control command can perform both relative position movement and absolute position movement.

FIG. 4 is a diagram showing a screen on which tail stock has been erased according to the present invention. Similar to FIG. 1, display device 1
6, a material 1, a chuck 2, a cutting tool 3, and a tail stock 4 are all drawn in animation. Also,
Various data such as X-axis and Z-axis position information and processing contents of the software keys 23 are also displayed on the display device 16 at the same time. The tail stock 4 is erased from the display device 16 by the tail stock 4 erase control command input in an interactive manner.
will be deleted. Once the erase control command is received, the tail stock 4 remains in the display device 16 until the next display control command is received.
The anime will never be drawn. Furthermore, when drawing the tail stock 4 in an animation again, the drawing position can be selected from either the erased position or the origin position.

FIG. 5 is a flowchart showing tail stock display control. The number following S represents the step number. [S1] Check whether the tool movement command has been completed. If the process has ended, this control ends, and if it has not ended, the process advances to step S2. [S2] Check whether it is a tail stock control command. If it is a tail stock control command, the process advances to step S3, and if it is not a tail stock control command, the process advances to step S1. [S3] Check whether it is a tail stock deletion command. If the command is to erase the tail stock, the process advances to step S4; if the command is not the command to delete the tail stock, the process advances to step S5. [S4] Perform tail stock deletion processing. [S5] Check whether it is a tail stock display command. If it is a tail stock display command, the process advances to step S6, and if it is not a tail stock display command, the process advances to step S7. [S6] Perform tail stock display processing. [S7] Check whether it is a tail stock movement command. If it is a tailstock movement command, the process advances to step S8, and if it is not a tailstock movement command, it returns to step S1. [S8] Perform tail stock movement processing. Therefore, it is possible to perform a machining simulation that is the same as the actual operation of the tailstock, and it is possible to accurately check for interference between the tailstock and the tool.

[0023] In the above explanation, the display of the tail stock,
Although the control commands for movement and erasing are performed using tailstock control commands inputted in an interactive manner, the control commands may also be performed using an auxiliary function code, that is, an M function code, after being converted into a machining program. For example, the tail stock display is M53, and the tail stock movement is M54.
, tail stock deletion may specify M52 as the M function code. Further, although the origin of the tail stock was set at the position where the tip of the tail stock and the end of the material 1 coincided, the origin may be set at any position on the display screen. Further, although the right side of the screen is set as a positive value, the left side of the screen may be set as a positive value. Then, create a machining program,
Input various data and start simulation processing,
Although the termination command and the like are input using the keyboard 17, they may also be input using the software keys 23.

[0024]

[Effects of the Invention] As explained above, in the present invention, it is possible to perform a machining simulation that corresponds to the actual movement of the tail stock. It is possible to accurately check for interference.

[Brief explanation of drawings]

FIG. 1 is a diagram showing a screen displaying a tail stock according to the present invention.

FIG. 2 is a block diagram showing the configuration of an interactive numerical control device.

FIG. 3 is a diagram showing a screen on which the tail stock has been moved.

FIG. 4 is a diagram showing a screen on which tail stock has been erased.

FIG. 5 is a flowchart showing tail stock display control.

[Explanation of symbols]

11, 31 Processor 12,32 ROM 15 Graphic control circuit 16 Display device 17 Keyboard 23 Software key 33 RAM

Claims (3)

[Claims] Claim 1: In the display method of a numerical control device that performs machining simulation by drawing animations of the shapes of materials, tools, etc. on a display screen based on control commands from the numerical control device, etc., displaying, erasing, and A display method for a numerical control device, characterized in that displaying, erasing, and moving the tailstock are animated based on a movement command. 2. The display system for a numerical control device according to claim 1, wherein the operation of the tailstock is controlled by a tailstock control command input in an interactive manner. 3. A display system for a numerical control device according to claim 1, wherein the operation of the tail stock is controlled by an auxiliary function code of a machining program.