JPS6340907A - Numerical controller - Google Patents

Abstract

PURPOSE:To efficiently execute a numerical control to plural machines, so that each working contents can be selected freely, and also, to execute each working in common by constructing plural control processing systems, and allowing each system to execute independently a control by an independent control program. CONSTITUTION:By a system control means of a data area D, a signal input/ output part 16A, a program area 20A and a driving part 22, and an input/output part 16B, an area 20B and a driving part 24, and an input/output part 16C, an area 20C and a driving part 26 are systemized, respectively. Also, one of working programs is selected from an area 20E, read out to a control art 12 by a work number, and designated so as to be executed in common by each machine 34, 36 and 38 by a common designating means of an area F. Servomotors 28-32 are controlled independently, respectively, based on that which has been selected among input control data from the input/output parts 16A-16C, and the control program and the working program in the areas 20A-20C.

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 a plurality of controlled 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 applied to various machine tools and is widely used. 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 rcPUj) (52), and also includes a data person output unit (54) and a signal person output unit (56).
) are connected to each other.

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).

Among these, the data person output unit (54) is for outputting processed data, especially the processing program, to an external data person output device (not shown), and the signal person output unit (56) ) is for human output of control data such as starting and stopping.

Next, the storage section (60) is provided with a data area (50)A and a program area (60)B.

The machining program and other machining data input from the data person output section (54) are stored in data area (80) A, and the control data input from the signal person output section (56) is stored in program area (60) B. It is designed to be stored in .

Next, the calculation unit (58) performs calculations necessary for controlling the servo motor group (64). For example, when a drive command is given at a vector speed, a predetermined calculation is performed from the decomposition speed in the coordinate axis direction. Arithmetic processing such as interpolation to determine the distance traveled in time is performed.

Next, the drive unit (62) is a servo motor group (64) or
Servo motor (84) A, servo motor (64) B,
and servo motor (64)C.
2) It is composed of A, ([i2) B, and (62) C.

Note that the servo motor group (54) 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 input from an external device through a data person output section (54) and a signal person 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 (8).
0) Based on the program and data stored in B, the data area storage unit (60) performs calculations such as the interpolation described above from the program and data stored in A, and the drive unit (62) Issues necessary drive commands. As a result, the servo motor group (64) is driven, and the required machining is executed according to the input data.

As described above, the servo motor (64) A, the servo motor (64) B, and the 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) B l of the storage unit (60)
,: Operates with a stored control program and drives the drive unit (
The servo motor (61I) A, servo motor (64) B, and servo motor (Ll) C connected to the motor 62) cannot be driven independently.

For example, a servo motor (54) A is used to rotate a drill on a drilling machine, a servo motor (54) B, a servo motor (
It is not possible to use 841C 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 g3 machines, a large amount of equipment is required, which is disadvantageous in terms of cost.

Further, the contents of machining are determined by the contents of a machining program prepared in advance, and there is a disadvantage that the contents cannot be easily changed.

The present invention has been made in view of the above points, and it is possible to efficiently numerically control a plurality of machines, to freely select various processing contents, and to perform these processings in common on each machine. The objective is to provide a numerical control device that is advantageous in terms of cost.

[Means for Solving the Problems] The present invention configures the information input/output unit and the drive unit into a plurality of independently operable systems, and also allows these systems to be independently operated by system control means. It is divided into multiple arbitrary groups corresponding to multiple executable control programs, each group is controlled independently, and the necessary machining programs are successively called by workpiece number, and each group is controlled by a common specifying means. This feature is characterized in that it can be executed in common.

[Operations] According to the present invention, the entire apparatus has a plurality of control processing systems, each system is independently controlled by an independent control program, and performs the operation of an appropriately selected machining program.

[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 device 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 output unit (54) in FIG. 2, and exchanges processing programs and other processing data with an external data 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 input/output sections (16) A, (16) B, and (16) C, each of which is capable of independently inputting control data. That is, the signal person output section (16) A
, (16) B, and (16) C each have the same function as the signal person output section (56) in FIG.

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, (
20) C stores control programs that can each operate independently. That is, the programs stored in program areas (20)A, (201B, and (20)C) are stored in program areas (20)A, (201B, and (20)C), respectively.
50) It has the same functions as the programs stored in B, and can be executed independently.

Next, the storage section (20) has a data area (20) D
is provided. This data area (20) D is
Like the data area (60) A in FIG. 2, this area is for storing processing data, but in addition, system control means is programmed and stored therein.

Next, the storage section (20) is provided with a data area (20)E. This data area (20)E is for storing the input machining program together with a predetermined workpiece number for recall. The machining program is
At least one data area, multiple data areas if necessary (20
)H.

Furthermore, the storage unit (20) includes a data area (20) F
is provided. In this data area (20) F,
Data area (20) E 1. A common designating means for designating a selected one of the stored machining programs to be executed commonly in each control program is programmed and stored.

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

These surf 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 and the common designation means stored in the data area (20) F will be explained.

These means are executed by the control unit (12).

As shown in FIG. 3, first, data input from the data output unit (14) and the signal input/output device (16),
Determine which control program to operate by referring to the control programs stored in program areas (20)A to 20)C (step S
(See A, SB, SC).

Next, we will explain the program to run and the publications and publications used for it.
Signal person output section (16) where human output of color data is performed
Determine the correspondence with A or 161 C (step S
(see D). Furthermore, the correspondence between the program and the drive unit (22) to 26) to be operated is determined (see step SE).

Next, a machining program corresponding to the machining to be executed is selected (see step SF). Then, common designation is performed by the common designation means so that the selected machining programs are commonly executed (see step SG).

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 201C1
The common designation means has the function of systematically grouping the drive parts (22) to 26), and the common designation means has a function of designating the selected machining program to be commonly executed in each group. be.

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

Now, referring to Figure 4, -suke's machine (34), (
36) and (38) are each controlled independently. In addition, in the signal person output part (18) A, the control data D (34) of the machine (34) is input/output, and in the signal input/output part (16) B, the control data D (36) of the machine (36) is input/output. ) are input and output, and the signal person output section (161C) outputs the control data D (38) of the i-machine (38).
It is assumed that the control programs for the machines (34) to 38) are stored in C or 20), and the control programs for the machines (34) to 38) are stored in the program area (20)E.
It is assumed that executable machining programs PA to PD are respectively stored in the computer.

In this case, the signal man output section (16) A, the program area (20) A, and the drive section (22) are connected in a system by the system control means of the data area (20) D described above, and the signal man output section (16) A, the program area (20) The output section (16) B, the program area (20) B, and the drive section (24) are systematized, and the signal person output section (18) C and the program area (20)
C and a drive section (26) are organized.

Then, one of the machining programs PA to PD is selected from the program area (20)E, read out to the control unit (12) according to the workpiece number, and is also read out to the control unit (12) by the common designation means in the program area (20)F for each machine (34). , (36), and (38) are specified to be executed in common.

The servo motor (28) or 32) receives the control data input from the (S output section (16) A or 16)C, respectively, and the program area (20)A or 20.
) Based on the control programs respectively stored in C and the selected machining program PA to PD,
Each is controlled independently. That is, starting operations, stopping operations, etc. are performed independently. However, the processing details are the same for each machine. At this time, the control unit (12) performs so-called task control.

As described above, this example functions as an independent numerically controlled installation for all three Ha systems.

Next, referring to Fig. 5, the machine (40) having two servo motors and the machine (42) having one servo motor are each independently controlled, and the machining program PE is executed. The cases in which each is executed will be explained.

In Fig. 5, in the signal man output section (16) A, the machine t
The human output of control data D (40) for ie (40) is performed, and the signal human output section (15) C is
The control data D (42) for 2) is assumed to be human output, and the program area (20) B contains the machine (
It is assumed that a control program to be operated on the machine (40) is stored, and a control program to be operated on the machine (42) is stored in the program area (20)C.

It is also assumed that machining programs PA to PF are stored in the program area (20) E.

In this case, the system control means of the data area (20)D causes the signal person output section (15)A to
, a program area (20) B, and drive units (22) and (24) are systemically connected, and a signal person output unit (16)
C and program area (20) C and drive unit (26
) are systematized.

Then, one of the machining programs PA to PF stored in the program area (20)E is selected, and the appropriate designation is made by the common designation means.

The machine (40) has a control program stored in a program area (20) B and a selected machining program PE.
The machine (42) is controlled by the program area (
20) Controlled by the control program stored in C and the selected machining program PE. In addition, the machine (40)
In the control described above, since two servo motors are the targets, interpolation calculation is performed in the calculation section (18).

As described above, in this example, the entire system operates as two independent numerical control devices.

In this example, for example, the machine (40) executes the machining program PB, and the machine $a (42) executes the machining program P.
D, and so on, machine [(40) and (42
) may be used to execute different machining programs.

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

The figure shows an example of a machine (44) having three servo motors. In this case, the signal input/output section (15) where the human output of the control data D (44) is performed
B, a program area (20) A in which a control program is stored, and drive units (22) to 26) are systematized. In this example, a single system of control similar to that of the device shown in FIG. 2 is performed.

However, the machining program to be executed can be arbitrarily selected from those stored in the program area (20)E.

Note that the present invention is not limited to the above embodiments in any way. For example, in the above embodiment, it is possible to construct up to three independent systems, two systems, or more systems.

[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 it is possible to efficiently numerically control a plurality of machines, and also to improve processing speed. Various contents can be selected and executed commonly in each system, which has the effect of being advantageous in terms of cost.

[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. (20) B, (20) C, (20) D,
(20) E, (20) F are program areas,
(22), (24), (26) are the driving parts, (
2B), (30), f32) are servo motors. 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 and machining program stored in the storage unit, the calculation unit performs the necessary calculations, and the control processing unit performs the necessary calculations for the drive unit to be controlled. In a numerical control device that issues control commands, the information input/output unit includes a plurality of systems capable of inputting and outputting information independently, and the drive unit includes a plurality of systems capable of independently driving a controlled object. The storage unit includes a plurality of independently executable control programs and at least one machining program that can be arbitrarily selected and executed according to a predetermined workpiece number,
System control means for arbitrarily grouping each system of the information input/output section and the drive section according to one of the plurality of control programs, and the selected machining program can be commonly executed in each group. A numerical control device, comprising: a common specifying means for specifying as follows, wherein the control processing section performs control independently 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.