JPS61118808A - Numerical controller - Google Patents

Abstract

PURPOSE:To convert the working program of a 2-axes lathe into another form that is applicable with a 4-axes lathe, by editing the program again for each working unit with use of a production means for a process information table and a production means for a group information table. CONSTITUTION:A 2-axes working program 3 is analyzed for each working unit for production of a process information table GT. While a group information table PT is produced so that the working units are allocated for each turret. Thus the working units that can be executed by two turrets at a time are combined; while the working units that can be executed at a time are executed by the turret at a single side. Then a control signal CS is delivered from a numerical controller based on both tables GT and PT and the program 3. Thus the 4-axes working is possible with high efficiency.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a numerical control device, and particularly to a numerical control device for a four-axis lathe equipped with two turrets.

[Conventional technology]

Conventionally, the control program applied to this type of numerical control device is usually created separately for each turret. Therefore, as shown in FIG.
For each turret, information is input from the Canadian program 2a*2b created for each turret.

[Problem that the invention seeks to solve]

However, in order to create a 4-axis machining program from the machine program of two turrets as described above, it is necessary to create a program that takes into account the time factors of both turrets, which is complicated and time-consuming. There was a problem. Further, even when creating a new 4-axis machining program, there is a problem in that it is complicated to create a machine program with a 4-axis image.

This invention was made to solve these problems, and an object of the present invention is to provide a numerical control device that edits the machine program of a two-axis lathe for each machining unit and converts it so that it can be executed on a four-axis lathe. shall be.

[Means for solving problems]

The numerical control device according to the present invention has a process information table creation means and a group information table creation means based on a two-axis machining nib program, and the two-axis machining program is based on the creation table and the two-axis machining program. The machine is equipped with a 4-axis machining control means that performs 4-axis machining.

[Effect]

In this invention, a process information table and a group information table that instruct how to execute a 2-axis machining program on 4 axes are created, and 4-axis machining is performed based on these created tables and the 2-axis machining program. Because I will do it,
There are no problems in creating the 4-axis machining program, and 4-axis machining can be efficiently executed.

〔Example〕

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings. 6 1) Creation of a process information table FIGS. 1 and 2 are explanatory diagrams for creating a process information table. The two-axis machining program 3 is created for each process (machining step), and there are cases where rough machining and finishing machining are performed in one process.

In this case, since rough machining and finishing machining are considered to be two processes, two process information tables are created for the rough process and finishing process, as shown in FIG.

Further, since the machining order is given priority to rough machining, as shown in FIG. 2, after creating a process information table 31 for the rough machining process, a process information table 32 for the finishing machining process is created. Note that FIG. 2 shows a process information table for one work.

The process information table 3i #32 is created for each process, and the order in which it is created will be explained below. j■ Example of data required from 2-axis machining program Evaprocess Nal
Processing software and processing methods.

The graphic pattern, processed portion Xmax value, processed portion Xm1n value, etc. are extracted.

(2) The type of tool, rotation direction, etc. are automatically determined from the data extracted in the above item 0 and the data in the tool information file read into the memory (not shown) of the numerical control device, for example.

■ Calculate the feed speed from the data extracted in item 0 above and data such as the machining mode, machining section, material material, tool material, etc. in the cutting conditions file read from the memo UK of the numerical control device.

Determine cutting conditions such as depth of cut and machining peripheral speed.

2) Creating a group information table FIG. 3 is an explanatory diagram of creating a group information table. Process information table created in 1) above (for 1 work)
It is determined in what combination the data D1 to Dll are to be executed by the two turrets a and b, and the execution order is distributed.

This distribution is divided into groups 01 to G7, and in each group, only one data is distributed to one turret at most. Turret) If it is impossible to execute both a and b at the same time, distribute to only one turret.

This distribution is performed in the order shown in the flowchart of FIG.
Determining whether 1) is executable with the tools (a) and (b), that is, determining whether there is a tool that can be used with the tools (a) or (b). Further, in steps S7 and S8, it is determined whether the processes n*n+1 can be executed simultaneously, that is, whether the rotational directions of the spindles match, whether the patterns can be combined in the combination table, etc. are determined.

This is performed by the central processing unit in the above-mentioned judgment company numerical control device, and the judgment results are read into the memory in the numerical control device to create a process information table and a group information table.

Then, as shown in FIG. 5, based on the process information table PT, group information table GT and two-axis machining program 3, the numerical control device 1 receives a control signal C8.
4-axis machining is performed by outputting .

〔Effect of the invention〕

As detailed above, according to the present invention, a two-axis machining program is analyzed for each machining unit, machining units that can be executed simultaneously by two turrets are combined, and machining units that cannot be executed simultaneously are executed by one turret. Since the holes are divided into sections for each turret, there is no apex in between when creating a 4-axis machining program, and 4-axis machining can be efficiently executed using a 2-axis machining program. .

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram for creating a process information table, Fig. 2 is a wedge-shaped diagram of the process information table, Fig. 3 is a wedge-shaped diagram of the group information table, and Fig. 4 is a 7C1-chart showing the creation process of the group information table. Figure 5 shows part 1 of this invention.
FIG. 6, which is a schematic configuration diagram showing an embodiment, is a relationship diagram between a machine program and a numerical control device when performing conventional four-axis machining. 1 is a numerical control device, 3 is a two-axis machining program, PT is a group information table, and GT is a process information table. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] In a numerical control device equipped with two turrets, there is a first means for creating a process information table that specifies how to execute each process of a two-axis machining program, and a means for creating a process information table that specifies how to execute each process of a two-axis machining program, and a method for determining how to execute each of the above processes based on the information in this process information table. and second generation means for a group information table that specifies which of the two turrets to perform the machining in the same order, the two turrets are created based on the process information table, the group information table, and the two-axis machining program. A numerical control device characterized in that it creates control signals and performs 4-axis machining.