JPS6354604A - Numerical controller - Google Patents

Abstract

PURPOSE:To efficiently execute a numerical control for plural machines by constituting the titled device so that the whole device constructs plural control processing systems, and each system executes independently a control operation of a main spindle and other controlled system by an independent control program and executes independently an interruption processing. CONSTITUTION:To a control part 12, an interruption interface part 46 is connected, and the interruption interface part 46 is constituted of interruption interfaces 46A-46C which can input independently an interruption command, respectively. That is, the interruption interfaces 46A-46C have the same function as that of a conventional interruption interface, respectively. To the control part 12, a storage part 20 is connected, and this storage part 20 has program areas 20A-20C, and stores a control program which can be operated independently, respectively. To driving parts 22, 24 and 26, servomotors 28, 30 and 32 are connected, respectively, and they can be operated independently.

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 that controls controlled axes including a plurality of main axes.

[Conventional technology] Numerical control, which commands the position of a tool relative to a workpiece using numerical information, has advantages such as improved productivity, labor savings, and thorough management, so it is widely used in various machine tools. ing.

FIG. 2 shows an example of a conventional numerical control device. In this figure, the control unit (50) includes a central processing unit (hereinafter referred to as "C20") (52),
Also, a data person output section (54), a signal person output section (56)
and an interrupt input signal interface (hereinafter referred to as "interrupt interface") (66) are connected to each.

The control unit (50) further includes a calculation unit (58) and a storage unit (
60) and a drive section (62) are connected to each other, and a servo motor group (64) is connected to the drive section (62).

Of these, the data input/output unit (54) is for inputting and outputting processed data with an external data output device (not shown), and the signal input/output unit (56) is for starting,
This is for human output of control data such as stopping. Further, the interrupt interface (66) receives interrupt processing instructions from an external device (not shown) as necessary.

Next, the storage section (60) is provided with a data area (80)A and a program area (60)B.

The manually processed data from the data output unit (54) is
It is stored in the data area (60) A, and the signal input/output section (5
The control data input from 6) is stored in the program area (
60) It is stored in B.

Next, the calculation unit (58) performs calculations necessary for controlling the servo motor group (64) and the main shaft, for example,
When a drive command is given at a vector speed, arithmetic processing such as interpolation is performed to obtain the eight moving distances for a predetermined time from the decomposition speed in the direction of the coordinate axes.

Next, the drive unit (62) has a servo motor group (64) that
Servo motor (64) A, Servo motor (64)
Corresponding to the fact that it is composed of three servo motors, B and servo motor (84) C, it is composed of three drive circuits (62) A, (62) B, and (62) C. .

Note that the servo motor group (64) actually corresponds to the servo motors of the three-axis driving portion of machine tools such as lathes and drilling machines.

Next, the operation of the above device will be explained. Data necessary for performing processing control is manually inputted from an external device by a data output section (54) and a signal output section (56).

These data are stored in the storage unit (6) by the control unit (50).
0) data area (60) A, program area (6
0) respectively stored in B.

Next, the control unit (50) controls the program area storage unit (6
0) Based on the program and data stored in B, the data area storage unit (60) performs calculations such as the above-mentioned interpolation from the data stored in A, and performs calculations such as the interpolation described above. Performs appropriate drive commands. As a result, the servo motor group (64) is driven, and the required processing is executed according to the human power data.

When an interrupt is commanded via the interrupt interface (66) during operation, the control unit (50) controls the operation so that the operation in progress is interrupted and interrupt processing is executed. It will be done.

As described above, the main shaft, servo motor (84) A, servo motor (64) B, and servo motor (64) C of the servo motor group (64) are not driven independently, but are driven as a whole. and is driven.

[Problems to be Solved by the Invention] By the way, in the conventional numerical control device as described above, the entire program area (60) B1 of the storage section (60)
．． : A servo motor (64) A that operates according to the control program stored in the tlr and is connected to the drive unit (62).
, servo motor (64)B, and servo motor (64)C cannot be driven independently.

For example, servo motor (64) A is used to rotate a drill on a drilling machine, servo motor (64) B, servo motor (
64) It is not possible to use C in a lathe.

Therefore, it is necessary to provide a numerical control device as shown in FIG. 2 for each machine. Therefore, when numerically controlling a large number of machines, a large amount of equipment is required, which is disadvantageous in terms of must-haves.

The present invention has been made in view of the above, and an object of the present invention is to provide a numerical control device that can efficiently numerically control a plurality of machines and is advantageous in terms of cost. It is.

[Means for Solving the Problems] The present invention configures the information input/output section, the interrupt input section, and the drive section into a plurality of systems that can operate independently, and also controls these systems by system control. The method is characterized in that the control program is divided into a plurality of arbitrary groups corresponding to a plurality of independently executable control programs, and control and interrupt processing are performed independently for each group. .

[Operation] According to the present invention, the entire device has a plurality of control processing systems, each system independently performs control operations for the spindle and other controlled objects using an independent control program, and also handles interrupt processing. Runs independently.

[Embodiments] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows an embodiment of a numerical control system according to the present invention. In this figure, a control unit (12) including a CPU (10) first includes a data output unit (14).
) are connected. This data input/output section (14) is
It corresponds to the data person output unit (54) in FIG. 2 and exchanges processed data with an external data person output device (not shown).

Next, a signal input/output device (16) is connected to the control section (12). This signal input/output device (16) is composed of signal output units (lli) A, (16) B, and (lli) C, each of which is capable of independently inputting and outputting control data. That is, the signal input/output section - (16) A
, (16)B, and (16)C each have the same function as the signal person output section (56) in FIG.

The control unit (12) also includes an interrupt interface unit (4).
6) is connected. This interrupt interface section (4
6) is composed of interrupt interfaces (46)A, (46)B, and (4[i)C, each of which can independently input interrupt commands. That is, each of the interrupt interfaces (46) A, (46) B, and (46) C has the same function as the interrupt interface (6B) in FIG. 2.

Next, a calculation section (18) is connected to the control section (12). This calculation unit (18) performs interpolation and other calculations as described above.

Next, a storage section (20) is connected to the control section (12). This storage section (20) has a program area (20).
0) A, (20) B, and (20) C. These program areas (20) A, (20)
B and (20) C store control programs that can each operate independently. That is, program areas (20)A, (20)B, (20)C
Each of the programs stored in the program area (60) B in FIG. 2 has the same function as the program stored in the program area (60) B in FIG. 2, and can be executed independently.

Furthermore, the storage section (20) includes a data area (20) D
is provided. This data area (20)D, like the data area (60)A in FIG. 2, is for storing processed data, but in addition, system control means is programmed and stored therein.

Next, the control section (12) includes drive sections (22) and (24).
, (26) are connected to each other. These drive parts (2
2), (24), and (26) can each operate independently, and each has the same function as the drive unit (62) in FIG. However, each glaze can be controlled.

Next, servo motors (28), (30), and (32) are connected to the drive units (22), (24), and (26), respectively.

These servo motors (28), (30), and (32) are not necessarily from the same machine, but may be from two or more machines, and can operate independently.

Next, the system control means stored in the data area (20)D mentioned above will be explained. The implementation of this measure is
This is performed by the control unit (12).

As shown in FIG. 3, first, a data input/output section (14),
and the data input from the signal input/output device (16) and the control program stored in the program area (20) A or 20) C to determine which control program is to be operated. (see steps SA, SB, SC).

Next, the correspondence between the program to be operated and the signal output section (16)A to 16)C where the control data used therein is outputted is determined (see step SD). Next, the program to be operated and the interrupt interface (46)A or 46) where the interrupt command is manually executed.
The correspondence with C is determined (see step SE). Furthermore,
The correspondence between the program and the drive unit (22) to 26) to be operated is determined (see step SF).

In this way, the system control means controls the signal input/output section (16) A or 16) according to the content of the required control operation.
C, Program area (20) A or 20) C
It has a function of organizing and grouping one drive unit (22) to 26) and interrupt interface (46)A to 46)C.

Next, the overall operation of the above embodiment will be explained using various cases as examples.

First, while referring to Fig. 4, -axis machine (34), (
36) and (38) are each controlled independently. In addition, in the signal input/output section (1'6) A, the control data D (34) of the machine (34) is outputted, and in the signal input/output section (IS) B, the control data D (34) of the machine (36) is outputted. 36) is input and output, and the signal person output section (1B)
In C, machine! It is assumed that the control data D (38) in (38) is output manually.

In addition, in the interrupt interface j4a)A, the machine (34
) is input, and the interrupt command for the interrupt interface (
46) At B, an interrupt command for the machine (36) is manually input, and at the interrupt interface (46) C, the interrupt command for the machine (38) is
It is assumed that the interrupt command is manually issued.

Then, program area (20)A or 20)C
It is assumed that control programs for the machines (34) to 38) are stored in each of the machines (34) to 38).

In this case, the system control means of the data area (20)D described above controls the signal person output section (16)A, the program area (20)A, and the interrupt interface (46).
A and the drive section (22) are systematized, and the signal output section (16) B, the program area (20) B, the interrupt interface (48) B, and the drive section (24) are systematized. A signal input/output section (16)C, a program area (20)C, an interrupt interface (4B)C, and a drive section (26) are systematized.

The servo motor (28) or 32) receives control data input from the signal person output section (16)A or 16)C, respectively, and the program area (20)A or 20).
Each of them is independently controlled based on a control program stored in C. That is, starting operations, stopping operations, etc. are performed independently. At this time, the control unit (12) performs so-called task control.

In addition, interrupt commands from the outside can be received via the interrupt interface (4
6) A to 46) C are manually operated for each system, and interrupt processing is executed independently.

As described above, in this example, the entire device functions as three independent numerical control devices.

Next, while referring to Figure 5, let's talk about a machine with two servo motors! A case will be described in which a machine (40) and a machine (42) having one servo motor are each independently controlled.

In FIG. 5, the signal input/output unit (18) A inputs and outputs the control data D (40) to the machine tfA (40), and the signal input/output unit (16) C inputs and outputs the control data D (40) to the machine tfA (40). 4
It is assumed that the human output of control data D (42) for 2) is performed.

In addition, the interrupt interface (46)C is connected to the machine (40).
), and the interrupt interface (46)A inputs the interrupt command to the machine (42).

Furthermore, in the program area (20) B, m machine (40)
It is assumed that a control program to be operated on the machine is stored, and a control program to be operated on the machine (42) is stored in program area (20)C.

In this case, the system control means in the data area (20)D controls the signal input/output section (16) as shown in FIG.
A. Program area (20) B. Interrupt interface (46) C1 drive sections (22) and (24) are organized, signal input/output section (16) C. Program area (20) C. Interrupt interface ( 46) A, the drive unit (26) is organized.

The machine (40) is controlled by a control program stored in program area (20)B, and the machine (42) is controlled by a control program stored in program area (20)C. Note that since two servo motors are the objects of control of the machine (40), interpolation calculations are performed in the calculation unit (18).

1:11-n 1. −, 7/n
(Hd −F l+ , , %
It operates as a numerical control device with X*TpF+5 peaks.

Next, with reference to FIG. 6, still another operational aspect of this embodiment will be described.

The figure shows an example where the machine m<441 has three servo motors. In this case, the signal person output section (16) where the control data D (44) is input/output is
) B, a program area (20)A in which the control program is stored, an interrupt interface (4B)B in which human input of interrupt commands to the machine (44) is performed, and a drive unit (22) or 26). will be systematized. In this example, one system of control similar to that of the device shown in FIG. 2 is performed.

Note that the present invention is not limited to the above embodiments in any way. For example, in the above embodiment, up to three independent systems can be constructed, but two systems or more systems may be constructed.

[Effects of the Invention] As explained above, according to the present invention, various independent control systems are constructed using the system control means, so that a plurality of machines can be efficiently numerically controlled, and the cost can be reduced. It also has the effect of being advantageous.

[Brief explanation of the drawing]

FIG. 1 is a circuit block diagram showing one embodiment of the present invention, and FIG.
The figure is a circuit block diagram showing a conventional numerical control device, FIG. 3 is an explanatory diagram explaining the functions of the system control means, and FIGS. 4 to 6 are explanatory diagrams showing the operation mode of the embodiment of FIG. 1. be. In the figure, (12) is a control unit, (16) is a signal input/output device, (18) is a calculation unit, (20) is a storage unit, (20) is a
A. (201B, (20) C is the program area,
(22). (24), (28) are drive parts, (28), (3
0) and (32) are servo motors, and (46) is an interrupt interface section. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (2)

[Claims] (1) Based on the information input from the information input/output unit and the control program stored in the storage unit, the calculation unit performs necessary calculations and the control processing unit issues necessary control commands to the controlled object, When an interrupt command is input from the interrupt input section, in the numerical control device that executes the corresponding interrupt processing, the information input/output section is equipped with a plurality of systems capable of inputting and outputting information independently. The drive section includes a plurality of systems capable of independently driving a controlled object, and the interrupt input section includes a plurality of systems capable of independently inputting interrupt commands. The storage unit includes a plurality of control programs, each of which can be executed independently, and each system of the information input/output unit, drive unit, and interrupt input unit is configured to correspond to one of the plurality of control programs. A numerical control device comprising system control means for arbitrarily grouping systems, wherein the control processing section independently performs control and interrupt processing for each grouped system. (2) The numerical control device according to claim 1, wherein the calculation unit performs an interpolation calculation between control objects within a group.