JPS61283905A - Numerical control program controller for numerically controlled machine tool group - Google Patents

Abstract

PURPOSE:To obtain a numerical control (NC) program controller of high efficiency which is suited to production of a small number of products of various types, by providing a variable part to a standard program of each numerically controlled machine tool for automatic production of a working program from a host computer. CONSTITUTION:A working schedule deciding means 25 of a host computer 1 decides the contents of the working job of each numerically controlled machine tool 7 according to the flow of a machine working line 21 by a command given from a main controller. A program name designating means 27 selects a mainprogram M4d1 or a secondary program S1 according to the decision of the means 25. A data transmission means 29 converts the designated program name into data and sends it to each machine tool 7. A numerically controlled device 33 of each tool 7 selects a standard NC program Q stored in a bubble memory 35 to extract both programs M1 and S1 corresponding to the prescribed working and produces a desired working program by means of its built-in automatic NC program editing function.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of the Invention] The present invention relates to an NC program control device for a group of NC machine tools suitable for high-mix low-volume production (hereinafter referred to as FMS).

[Description of Prior Art 1 An example of a conventional NG program control method for a group of NC machine tools includes, for example, the method used in DNCI Direct NC). This method stores NC data in a magnetic storage device in a DNC host computer, and distributes the required data to each NC machine tool.

However, these conventional methods require a large amount of storage space on the host computer, and it is also necessary to create new NC data for each product, and when the NC data becomes large, data transmission to the NC machine tool becomes necessary. There was a chin point for a lot of time, etc.

[Objective of the invention] This invention improves the above problems, eliminates the need to create new NC data for various products, and does not require a large memory volume on either the NC machine tool or host computer. Also, the high-efficiency skewer N is suitable for FMS, which minimizes the data transmitted (from the upper level calculation and machine to the NC machine tool).
The purpose of this invention is to provide an NC program control device for C machine tool group.
- [Summary of the Invention] In order to improve the above-mentioned problems, in this invention, as shown in the claim correspondence diagram in FIG. The standard NC that each unit NC machine tool has based on the schedule determined by
Variable part automatic generation means 5 that automatically generates variable parts to be given to the program; Variable part transmission means 9 that transmits the variable parts generated by the means to each unit NC machine tool 7; A variable part receiving means 11 for receiving the variable part transmitted from the variable part transmitting means 9 to the machine 7, a standard NC program storage means 13 for storing a standard NC program, and a standard NC program stored in the means 13. and machining program editing means 15 for compiling a machining program based on the variable part received by the variable part receiving means 11, and machining means for performing predetermined machining processing based on the machining program edited by the means 15. 17 and configures the NC program control device 19 of the NC machine tool group, and by giving the variable part from the host computer to the standard NC program possessed by each NC machine tool 7, each NC machine tool 7
The Canadian nib day gram is now automatically generated.

[Description of Embodiment] Hereinafter, an embodiment of the present invention will be described based on FIGS. 2 to 4.

FIG. 2 is an explanatory diagram of a machining line to which the NC program control device of the NC machine tool group is applied; FIG. 3 is an explanatory diagram of the variable part configuration process of the program name designation means, which is an embodiment of the variable part automatic generation means; FIG. 4 is an explanatory diagram showing the flow of the variable section.

As shown in FIG. 2, the machining line 21 includes a host computer 1 and a plurality of NC machine tools 7 connected to the host computer 1 via data transmission lines 23.

The host computer has a processing schedule determining means 25, a program name specifying means 27, and a data transmitting means 29.

The machining schedule determining means 25 determines the contents of the machining work to be performed by each NC machine tool 7 according to the flow of the machining line 21 in response to commands from a main controller (not shown).

The program name specifying means 27 selects, for example, peeling, tapping,
For the NG machine tool (lathe) 7 that has the function, the machine tool (lathe) 7 with a center has a skin orientation, tapping, and a center attachment, as shown in Figure 3, depending on the name of the main program for machining and, for example, the product size. It is combined with the name of the subprogram.

For example, if the NC machine tool 7 is designated to perform peeling of a large product size, the main program M1 and the subprogram S1 may be selected.

The data transmission means 29 is for transmitting data to the NC machine tool 7, and the program name designation means 27
The program name designated by is converted into data and transmitted to each NC machine tool 7.

The NG device 33 numerically controls control members such as the servo motor included in the machine tool 31, and also has an automatic editing function of the NC program.

As shown in FIG. 4, the bubble memory 35 stores the main and subprograms M1 to M described above in FIG.
The contents of 3.81 to S3 are stored as a standard NCNC program Q.

The main program is an NC program created based on processing processes such as peeling, tapping, centering, etc., and the subprogram is an NC program created based on the processing process, such as peeling, tapping, centering, etc., and the subprogram is a program that is created based on the processing process, such as the diameter and length of the product, regardless of the type of processing. etc. shall be specified.

As shown in FIG. 4, the program name specified by the program specifying means 27 is transmitted to the NC
It is input to the device 33, and the NC device 33 inputs it to the bubble memory 35.
Select the standard NC program Q stored in the memory, extract the NG main and subprograms Ml and Sl, for example, in response to processing large-sized leather surfaces, and automate the internal N and C programs. Create the required machining program using the editing function.

In the machining line 21 with the above configuration, the host computer 1
The machining schedule determining means 25 determines a schedule according to the flow of the line, and the machining program name designating means 27 designates a required program name to each NC machine tool 7 in accordance with this determination.

Then, each NC machine tool 7 extracts the main and subprograms stored in the bubble memory from the specified program name, and
In this way, a predetermined machining program is created, and by this machining program, for example, a product-sized workpiece is stripped.

As a result of the above, the work performed by the host computer 1 is extremely simple, just selecting the program name, and since the data transmitted via the data transmission path 23 is only the program name, not the program contents, transmission time can be saved. Become something.

Furthermore, the capacity of the bubble memory for storing the standard NC programs of the NC machine tool 7 is only limited to several types of main programs according to the machining process of the machine and several types of sub-programs indicating the product size, etc. Its storage capacity is relatively small, and program editing can be as simple as combining main and subprograms.

This makes it possible to construct a high-speed, highly efficient machining line that is compatible with a more advanced FMS, and also enables production of a large variety of products.

In the above embodiment, the variable part was generated by combining program names, but only the main program corresponding to the processing process is stored in the bubble memory, and the variable part automatic generation means is used to generate variables according to the product size. Of course, it is also possible to specify.

[Effect of the invention] As described above, in this invention, the host computer is provided with a variable part automatic generation means, the NC machine tool is provided with a standard NC program storage means, and the variable part is specified in the NG standard program possessed by each NC machine tool. This makes it possible to create machining programs through simple configuration, making it easy and quick to create machining programs.There is no need to create new NG data for various products, and NC A program for a group of highly efficient NC machine tools suitable for FMS that does not require large storage capacity on either the machine tool or the host computer, and minimizes the amount of data transmitted from the host computer to the NC machine tool. A control device can be provided.

[Brief explanation of drawings]

FIG. 1 is a diagram corresponding to the claims of the present invention, FIG. 2 is an explanatory diagram of a machining line according to an embodiment of the present invention, FIG. FIG. 4 is an explanatory diagram showing the flow of the variable section. 1... Upper] Calculator 3... Machining schedule determining means 5... Variable part automatic generation means 7... NC machine tool 9... Variable part transmitting means 11... Variable part receiving means 13. ... Standard NC program storage means 15 ... Machining program editing means 17 ... Machining means 19 ... NC program control device of NC machine tool group Figure 4

Claims (2)

[Claims] (1) A machining schedule determining means that determines a machining schedule in a host computer, and automatic variable part generation that automatically generates a variable part to be given to the standard program of each NC machine tool based on the schedule determined by the means. means, variable part transmitting means for respectively transmitting the variable part generated by the means to the NC machine tool, variable part receiving means for receiving the variable part transmitted from the variable part transmitting means to the NC machine tool, and an NC standard. A standard NC program storage means for storing a program, and a standard NC program stored in the means
A machining program editing means for editing a machining program based on the program and the variable part received by the variable part receiving means, and a machining means for performing predetermined machining processing based on the machining program edited by the means. A program control device for a group of NC machine tools. (2) The automatic generation method of the variable part of the variable part automatic generation means is performed by combining main and subprogram names prepared in advance, and the processing program editing means is configured to use the name of the program received by the variable part reception means. 2. An NC program control device for a group of NC machine tools according to claim 1, which edits a machining program by combining main and subprograms stored in said standard NC program storage means based on said standard NC program storage means.