JPH0253104A - Numerical controller - Google Patents

Abstract

PURPOSE:To perform the correcting calculation with use of the external correction data by obtaining this correction data via the switch carried out between a correction data file and a tool information file. CONSTITUTION:A correction data file 7 stores the correction values used for correction of the lengths and the diameters of tools. While a tool information file stores the correction data which are received from a CRT display device 2 or a measuring instrument 13 which measures the lengths and diameters of tools. A program analyzing part 9 calls out a correction routine and decides the necessity of the correcting calculation when an instruction is given to a program for the correction routing during the run of a working program. When said necessity of correcting calculation is decided, the correcting calculation is carried out via a programmable controller 6 based on the correction data on a file 12 set at an interface part 11 and when the switch signal set at the part 11 is kept on. Then the correcting calculation is performed based on the correction data on the file 7 while the switch signal is kept on.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a numerical control device having a function of correcting the positioning of a tool used for machining with a machine tool or the like.

[Prior Art] FIG. 6 is an overall block configuration diagram showing the configuration of a conventional numerical control device.

In the figure, (1a) is a numerical control device, (2) is a CRT display device that is connected to this numerical control device @ (1a) and sets and displays various data, and (3) is a numerical control device (1a).
A) A work that operates upon receiving instructions from a) is a controlled object such as a machine,
(4) is a drive amplifier that drives the drive motor of controlled object (3), (5) is an operation board that provides operating conditions to the numerical control device (1a), and (6a) is a built-in device in the numerical control device @(1a>). , a programmable controller that performs sequence control of the controlled object (3), (7) a correction data file that stores correction amounts for correcting the length and diameter of the tool, (
8) is a machining program file indicating the operation order of the controlled object (3), (9a) is a program analysis section that analyzes the machining program, and (10) is a command from the program analysis section (9a) and a programmable controller (6a). Depending on the operating conditions from , the control target (
3) is a machine control unit that controls the

Next, the operation of the conventional numerical control device configured as described above will be explained. Note that FIG. 4 used in this explanation is an explanatory diagram showing the correspondence between correction numbers and correction amounts of the correction data program of the numerical control device, and FIG. 5 is an explanatory diagram showing an example of the addition program of the numerical control device 611. be.

The operator displays the correction amount on the CR7 display (2).
As shown in the figure, it is set in the correction data file as the correction amount for the correction number. Generally, the correction amount is set to the amount of tool wear compared to a new tool. Further, a carnivorous program as shown in FIG. 5 is stored in the machining program file (8).

After that, when the automatic operation start button prepared on the operation board (5) is pressed, the numerical value 11Jil device (1a) sequentially reads out the Kanji program from the machining program file (8) and analyzes it in the program analysis section (9a). Then, via a machine control section (10) and a drive amplifier (4), the position of the controlled object (3) is controlled according to the control program.

For example, rG91 G43 Zz4 H of sequence number rNOO4J of the Canadian program shown in FIG.
When a block O2J that requires correction calculation is reached, the program analysis section (9a) calculates the amount of Z-axis movement. This movement amount is the sum of "z4" and the correction amount corresponding to the correction number rHO2J stored in the correction data file (7), in this example, the value r-50J shown in FIG. 4. In other words, the amount of movement on the Z axis is rz4 + (-50)
J, and the reference value "Z4" is corrected by r-50J.

In this way, when the program analysis unit (9a) comes to a block that requires correction calculation, it analyzes the program and applies the correction amount corresponding to the correction number specified at that time to the movement amount on the program. Call it from the data file (7) and add it to calculate the amount of movement. The calculated travel amount is sent to the machine controller (10) along with other information.
sent to. The machine control unit (10) uses the information to control the control target (3) through the drive amplifier (4).
control the position of

Thereafter, the above operation is continued in the same manner.

[Problems to be Solved by the Invention] Since the conventional numerical control device is configured as described above, when the positioning position of the controlled object is to be corrected, the operator can set it from the CR7 display device (2) side. There is no choice but to use the correction data, and the tool function number rTnJ to be used must be associated with the correction number to create a cutting program. For example, in FIG. 5, the block with sequence number rNOO4J has tool function number "
Drive with TolJ. Therefore, it was necessary to make a correspondence such that the correction number corresponding to the tool rTOlJ is rHO2J.

Therefore, it is an object of the present invention to provide a numerical control device that can perform correction not only using correction data in a correction data file that the numerical control device basically has, but also using external correction data. .

[Means for Solving the Problems] A numerical control device according to the present invention includes a correction data file storing correction data for correcting the length and diameter of a tool, and correction data for correcting the length and diameter of the tool. The tool information file of the programmable controller in which is stored, and a switching means for switching and outputting correction data from the correction data file and correction data from the tool information file, and correct the position of the tool. .

[Operation] The tool information file of the programmable controller according to the present invention stores correction data for correcting the length and diameter of the tool, and by switching with the switching means, the tool length stored in the correction data file can be changed. Instead of the correction data for correcting the height and diameter, a correction operation is performed for the positioning position of the tool.

[Example] The present invention will be described in detail below.

Figure 1 shows numerical control according to an embodiment of this invention! FIG. 2 is an overall block configuration diagram showing the configuration of the II device. Also, the second
The figure is an explanatory diagram showing tool function number versus correction amount as an example of data of the contents of the tool information file (12) according to an embodiment of the present invention. FIG. 3 is a flowchart showing the correction switching operation in one embodiment of the present invention.

In Figure 1, (1) is a numerical control device that can perform correction operations using correction data from a programmable controller (6), and (2) is a CR that sets and displays various data.
T display device (3) is the numerical control device (1), for example,
It is a control target for machine tools, etc. (4) is the controlled object (3)
drive amplifier that drives the drive motor, (5) is an operation board that provides operating conditions to the numerical control device (1), and (6) is built in the numerical control device @ (1) and performs sequence control of the controlled object (3). Programmable controller that performs etc., (7)
is a correction data file that stores correction amounts for correcting the length and diameter of the tool, (8) is a machining program file that indicates the operation order of the controlled object (3), etc., and (9) is a programmable controller that is used to perform correction calculations. (10) is a program analysis section for analyzing a Canadian program, which is equipped with a switching means for performing correction calculations based on correction data in a correction data file (7) or based on correction data in a correction data file (7); Depending on the operating conditions from the programmable controller (6), the control target (3) passes through the drive amplifier (4).
The machine control section (11) is an interface section for the programmable controller (6) to set correction data and switching signals to the program analysis section (9), and (12) is the machine control section that the programmable controller (6) uses independently. The tool information file (13) is a measuring device that measures the length, diameter, etc. of the tool.

Next, the operation of the numerical control device of this embodiment configured as described above will be explained. Note that FIG. 4 used in this explanation is an explanatory diagram showing the correspondence between correction numbers and correction amounts of the correction data program of the numerical control device, and FIG. 5 is an explanatory diagram showing an example of the addition program of the numerical control device.

When the automatic operation start button on the operation board (5) is operated, the sequence number rNOO is pressed while operating the Canadian program shown in Fig.
When a block that requires 4J correction operation is reached, the program analysis section (9) checks the switching signal set in the interface section (11), and if the switching signal is on, it is used as the switching means. The correction number specified in the program is ignored, correction calculations are performed based on the correction data set in the interface section (11), and the positioning position is calculated. At this time, the interface section (11)
is set with correction data corresponding to the currently used tool function number "TOl" from the one-odor information file (12) that the programmable controller (6) has uniquely. Therefore, the Z-axis movement amount of rNOO4J is the sum of "24" and the correction amount corresponding to the tool function number rTOIJ in FIG. 2, rz4 + (-30)J.

In addition, the correction data of the tool information file (12) that the programmable controller (6) has independently is CR
It may be set from the T display device (2), or it may be measured by a separate measuring device (13) that actually measures the tool currently in use, and the data sent from the measuring device (13) may be stored. It's okay. The programmable controller (6) sequentially sets correction data corresponding to the tool function number being used at that time in the interface section (11).

Further, when the switching signal set in the interface section (11) is off, the program analysis section (9) working in the switching means and 1 can detect the program l@rz4, which is the sum of the movement amount 'Z4J and the correction amount (-50) corresponding to the correction number rl-102J based on the data from the correction data file (7)
+(-50)J is the amount of movement.

In either case, the calculated amount of movement is sent to the machine control unit (10) along with other information. The machine control unit (10) controls the position of the controlled object (3) through the drive amplifier (4) based on the information.

The control operations performed by the program analysis section (9) are shown in the flowchart of the correction routine in FIG.

While the Canadian program is running, this correction routine is called, and in step S1 it is determined whether correction calculation is necessary. If the block requires a correction operation, step S2
The program analysis section (9) is the interface section (11).
If the switching signal is on, a correction calculation is performed based on the correction data set in the interface section (11) in step S3. Further, when the switching signal set in the interface section (11) is off in step S2, correction calculation is performed based on data from the correction data file (7) in step S4.

By the way, in the above embodiment, the interface section (11)
The correction number specified on the program was ignored and a correction amount was set in its place, but when implementing the present invention,
The data to be set may be a correction number that replaces the correction number specified on the program, or a correction number that corresponds to the correction number.
Finally, it may be a value to be further added, and data for determining which correction type is used may be set in the interface section (11) at the same time.

Further, in the above embodiment, the switching signal is placed in the interface section (11), but when implementing the present invention, the switching signal may be a parameter set from the CRT display device (2), or the like. be effective.

[Effects of the Invention] As described above, according to the numerical control device of the present invention, a machining program file storing a machining program specifying the length and diameter of the tool and the positioning position of the tool, and the length and diameter of the tool can be stored. and a programmable controller tool information file that stores correction data for correcting the length and diameter of the tool. Since the correction data from the tool information file is switched and output, position correction data can be specified from outside, including a programmable controller, if necessary, increasing the degree of freedom for correction. Correction is possible by setting correction data corresponding to the tool function number being used at that time using the programmable controller. When creating a tool program, it is not necessary to be aware of the correction number corresponding to the tool function number.

[Brief explanation of the drawing]

FIG. 1 is an overall block diagram showing the configuration of a numerical control device according to an embodiment of the present invention, and FIG. 2 is an example of data of the contents of a tool information file according to an embodiment of the present invention. Tool function number versus correction amount FIG. 3 is a flowchart showing the correction switching operation according to an embodiment of the present invention, and FIG. 4 is a diagram showing the correction Il@ pair correction of the correction data program of the numerical control device according to the embodiment of the present invention and the conventional example. FIG. 5 is an explanatory diagram showing an example of a numerical control device according to an embodiment of the present invention and a conventional numerical control device. FIG. 6 is an explanatory diagram showing an example of a conventional numerical control device. FIG. 2 is a block configuration diagram. In the figure, 1: Numerical control device, 6: Programmable controller, 7: Correction data file, 8: Machining program file, 9 Niprogram analysis section, 12: Tool information file. In the figures, the same reference numerals and the same symbols indicate the same or equivalent parts.

Claims (1)

[Claims] (1) A machining program file that stores a machining program that specifies the length and diameter of the tool and the positioning position of the tool, a correction data file that stores correction data that corrects the length and diameter of the tool, and a A tool information file of a programmable controller storing correction data for correcting length and diameter, and a switching means for switching and outputting correction data from the correction data file and correction data from the tool information file. A numerical control device featuring: