JPS6125214A - Control system for lifetime of tool - Google Patents

Abstract

PURPOSE:To attain the proper control for lifetime of tools and to improve the working efficiency by registering not only the tool data but the tool lifetime data and performing the control for lifetime of tools concurrently with production of a numerical control NC tape. CONSTITUTION:An automatic programming system comprises an NC data memory 101, a display device 105, a RAM106, etc. A path locus is displayed based on a control program stored in a ROM104 by pressing a start button after a mode selection switch on an operation board 102 is set in an auxiliary data input mode. Then the numbers of tools and the data on the lifetime control of tools are registered for each machining path and also displayed on CRT105d. The necessary time of the machining path is stored in the memory 101, and the remaining machining time is calculated according to a program of the ROM104. The total using frequencies obtained based on the program execution are stored in a RAM106.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a tool life management system, and more particularly to a tool life management system that allows tool life management to be performed within an automatic programming system.

(Prior Art) Conventionally, there is a numerical control (NC) device that allows an option to estimate the machining time of a tool. However, such NC devices are only partially used, and many NC devices that do not have an optional tool machining time estimation function are still in use.

On the other hand, the capabilities of automatic programming devices have expanded and become capable of performing a variety of functions. For example, reading paper tape, punching paper tape, reading and writing from other auxiliary storage devices (bubble memory, cassette magnetic tape, etc.), printing various data, inputting data from a keyboard, and displaying data. The various functions of these automatic programming devices are performed under the control of a processing unit provided within the device.

(Problems with the prior art) As mentioned above, in the case of NC equipment that does not allow tool life management, such as regeneration machining time, as an option, the operator cannot know when to replace the tool, making it difficult to smoothly plan the work. However, there were problems such as the tool reaching the end of its lifespan in the middle of machining the workpiece, wasting the workpiece, and producing an unsuitable machined product.

(Objective of the Invention) The present invention provides tool life management that supplements the functions of an NC device and improves work efficiency and quality of processed products by providing a tool life management function in an automatic programming system. The purpose is to provide a method.

(Summary of the Invention) The present invention registers tool data and tool life data in an automatic programming system equipped with a processing device, and performs tool life management processing at the same time as creating a numerical control tape. . Further, data related to tool life management is displayed on a display (Embodiment) An embodiment of the present invention will be described in detail below with reference to the drawings.

Fig. 1 is an explanatory diagram of a path trajectory according to an embodiment of the present invention showing data related to tool life management processing on a display, Fig. 2 is a block diagram of an embodiment of an automatic programming system, and Fig. 3 is an explanatory diagram of an operation panel. , FIG. 4 is a flowchart of tool life management.

In Figure 1, P1→P2→P, ...→pH
→ P1 is a path locus, and this path locus is displayed on the cathode ray tube surface 11 using path data that has already been created and stored in the NC data memory 101 (see FIG. 2).

When the mode selection switch 102a on the operation panel 102 is set to the auxiliary data input mode and the start button 102b is pressed, the processing device 1osFs displays the path trajectory based on the control of the control program stored in the ROM 104. Execute the process. That is, the processing device 103
-K (0→K), the path data is sequentially read out one block at a time from the memory 101, the successive path data is converted to image information and stored in the RAM 106, and after the conversion process image information (straight line, arc , the starting point, the ending point, etc.) are input to the vector generator 105 one by one.

The vector generator 105a performs normal linear or circular interpolation calculations using the input image information, and generates interpolation pulses XP and YP in each axis direction to the address counter 105b.
Enter. Address counter 105bFi has two address counters for the X-axis circumference and Y-axis, although not shown.
The interpolation pulses of each axis are counted, and "1" is written in the storage location of the screen memory 105C indicated by the X-axis circumference address counter and the Y-axis circumference address counter each time. still,
The screen memory 105C has a matrix configuration, and has a 1-bit memory location corresponding to each picture element position on the cathode ray tube surface.Every time an interpolation pulse is generated, an X-axis address counter and a Y-axis address are input. 1# is written to the memory location of the matrix intersection point indicated by the address counter. If the path trajectory is stored in the screen memory 105C through the above processing,
Thereafter, the stored information is read out from the screen memory 105b in synchronization with the beam deflection, and the brightness is modulated using the stored information.
The tool path locus is displayed on the cathode ray tube 105d. Note that a timing signal for retrieving stored information from the screen memo 1J105c and a timing signal for deflecting the beam are output from the timing signal generator 105e. and,
The readout control section 105f reads the stored information from the screen memo 1J105c based on this timing signal, and the brightness control section 105g controls the brightness based on the stored information. Also,
The deflection control unit 105h deflects the beam horizontally and vertically based on the timing signal.

On the other hand, at the same time as the path trajectory is generated, the positions of the starting points Ps, Pt, . . . Pll of each path block are sequentially stored in the RAM 106.

Next, the processing device 103 reads the variable K stored in the RAM 106, and determines the starting point Pk+t of the path block ((K+1)th path block) indicated by (K+1).
(= Ps ) is read out from RAM 106, and the corresponding starting point Pk
+1 is input into the cursor pointer section 1051. Now,
Since the timing signal from the timing signal generator 105e is also input to the address counter section 1051,
Address pointer section 105id beam position can be identified. Therefore, when the beam position reaches the cursor display position (point Pk+x) on the cathode ray tube, a cursor display signal is transmitted from the address pointer section 1051 to the brightness control section 105g.
The cursor is displayed manually. Incidentally, the cursor plinking is performed by outputting or not outputting a cursor display signal every time n screens are scanned.

Further, in the present invention, the tool number and data regarding the life management of the tool are registered for each machining path and are displayed on the cathode ray tube surface 11.

That is, as shown in FIG. 1, the first passage block P,
There is Tl-1 near the passage that specifies P2,
It is displayed that this is the first use of tool T.

Furthermore, display (*, **) near the display of Tl-1, where * indicates the number of remaining machining hours (for example, minutes) for tool T, and ** indicates the number of remaining machining times for tool T1. Make it visible.

This point will be explained in detail with reference to the flowchart shown in FIG.

First, based on the machining conditions when performing the cutting process shown in FIG. 1 while registering tool data in the NC data memory 101? The life of the tool T1 that was used, that is, is reduced. Furthermore, tool T1
When used for the first time, the number of remaining machining hours * is the number of hours that corresponds to the total life of the tool Tl, and the number of hours that corresponds to the total life is the number of hours of use of the tool T used in one cutting cycle, that is, Total machining path P+ Pt + P of tool T1
8 P4 + P5 P6 + Pt P80P+o
The value divided by the total number of hours required for processing Ptt, that is,
The number of remaining uses of tool T is registered, and the CRT surface 1 is
Display on 1. Therefore, in this embodiment, the number of remaining machining times for each tool is displayed near the first machining path of the cutting cycle. In the vicinity of the passage P and P2 in the tool T1, the tool T! Then P, P
It is near s, and is displayed as KI for tool T3, and P8P and ASH for tool T4, respectively, following the mark **.

On the other hand, the remaining machining time is displayed for each tool and also for each machining path.

The operation of the automatic programming system will now be described in more detail.

First, the cursor is at point P1't? I am giving instructions. In this state, the total machining time stored in an input register (not shown) inside the operation panel of the first passage block and the total number of uses determined based on this total machining time are read by the processing device 103. R.A.
It is stored in M106. After that, the processing device 103
Under the control of the NC data editing program stored in FLO, M2O3, insert the total machining time and total number of times of use of tool T1 as NC data before the K-th NC data.0 Note that this will not be explained here. However, M and G function command data are also incorporated as appropriate.

Next, if the forward key 102c is pressed, the processing device 105
teeth .

K-1-1→K, and the starting point P2 of the second passage block is RA.
Read from M 1 o 6 and input it to the cursor display signal 1051 in the same manner as described above, and point P on the cathode ray tube.

Plink the cursor at the position.

Next, before the path data that specifies the first path blocks P and Ps, the total machining time* and the total number of times of use of one tool T2 are incorporated in the same way as above, and the corresponding NC data is inserted before the K+1st NC data. Insert five days of data regarding the total lifespan.

Further, if the forward key 102C is pressed, the processing device 103
Let +2 → K-1-1 and set the starting point Ps of the third passage block to RA.
M106, input it to the cursor pointer section 1051 in the same manner as described above, and link the cursor at the position of point P on the cathode ray tube.

The remaining machining time of the tool T is incorporated before the path data specifying the third path block P8P.

This remaining machining time is calculated by the processing device 103 based on the data stored in the RAM 106, and is calculated by the processing device 103 based on the data stored in the RAM 106. It is displayed on the screen 1''1 and stored in the AM 106.

The machining path PIPx O-required time is stored in the NC data memory 101, and the remaining machining time is calculated in the ROM1.
This is done by a program stored in 04.

The remaining part of the tool T1 obtained in this way * The number of working hours is N
Insert as C data. In addition, 102 in Figure 3
d is the back key, 102e is the input key, 102f is the input data clear key 0, and as before,
This is sequentially repeated until the processing path pHP1 is reached, and one cycle of cutting nibbling programming can be performed. When the first cycle is completed, if the cutting cycle is the same, the previous tool life management data will continue to be used under the same conditions in the second cycle of cutting nib programming.
Tool life management processing can be performed 0 Also, if the cutting conditions for the second cycle are changed, the data will be changed to match the cutting conditions, and the data related to tool life will be stored at the start of that cycle. , to continue tool life management by setting the last data and final data of the cycle. In this way, by utilizing the functions in the conventional automatic programming system, the tool life management can be continued for each tool. The remaining working time and remaining number of uses of each tool can be stored for each tool, and displayed on the cathode ray tube for easy management by the operator.

Although the present invention has been described by way of an example, the present invention includes
The ID is not limited to this embodiment, and various modifications can be made in accordance with the spirit of the present invention, and these are not excluded from the scope of the present invention.

In particular, various modifications can be made to the setting and display of the remaining working hours and remaining number of uses of the tool.

(Effects of the Invention) According to the present invention, in an automatic programming system equipped with a processing device, tool data and tool life data are registered, and tool life management processing is performed at the same time as creating a numerical control tape. Therefore, (1),
The operator can appropriately manage the life of the tool and smoothly proceed with the setup of the work, so that work efficiency can be improved. Moreover, since the tool can be replaced before the end of its life and in a machining cycle with good cutting edge, the workpiece is not wasted and the quality of the processed product can be improved. Furthermore, the means to accomplish this may be by utilizing the capabilities of conventional automatic programming systems. And the increase in cost for functional enhancements is small.

In addition, data related to tool life management processing is displayed on the display, so operators can easily understand this data intuitively and visually, and can take appropriate measures in response to this data. .

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of a path trajectory according to an embodiment of the present invention showing data related to the tool life management process on a display, Fig. 2 is a block diagram of an embodiment of an automatic programming system, and Fig. 3 is an explanatory diagram of a control panel. , FIG. 4 is a flowchart of tool life management. 101...NC data memory 102...Operation panel 103...Processing device 1
04...R10M105...Display device 106...
RAM T, NT,...Tool*...Displaying the number of remaining working hours for the tool**...Displaying the remaining number of times the tool has been used Patent applicant: Fanuc Co., Ltd. Representative Patent attorney: 1 person Tsuji Sanagai

Claims (2)

[Claims] (1) A tool life management method characterized in that, in an automatic programming system equipped with a processing device, tool life data is registered as well as tool data, and tool life management processing is performed at the same time as a numerical control tape is created. (2) The data regarding the tool life management process is displayed on a display.
Tool life management method described in ).