JPH0883113A - Controller for nc machine tool - Google Patents

Abstract

PURPOSE: To provide an axial move controller for NC machine tool with which axial move control data for an axial move control operation during the operation cycle execution of an automatic pallet converter (APC) or an automatic tool converter (ATC) due to a prescribed command can be easily selected from the side of a PC device. CONSTITUTION: When position number data set in advance and an axial move request signal are outputted from a PC device 1 to the side of an NC device 2 while an M code command or a T code command is executed by the NC device 2, an axial move control part on the side of the NC device 2 reads the position coordinate value of an axial move control data register part (axial move parameter memory part), the selection data of a fast forward/cutting feeding mode or the axial move control data of cutting feeding speed or moving order for each axis corresponding to the position number data transmitted from the side of the PC device 1. According to these data, axial move control is performed and when the axial move control is completed, an axial move completing signal is returned to the PC device 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the axis movement from the PC side when the axis movement control operation of the NC machine tool is performed within the operation cycle of the automatic pallet changer or automatic tool changer executed by a predetermined command. The present invention relates to an NC machine tool control device capable of arbitrarily selecting data for control operation.

[0002]

2. Description of the Related Art Conventionally, an automatic pallet changing device (hereinafter referred to as A
An automatic tool changer (hereinafter referred to as PC) and an automatic tool changer (hereinafter referred to as ATC) are executed by a control program on the NC device side by an M code command or a T code command. That is, if there is a command (for example, M60; etc.) for executing the APC operation in the machining program, the machining program operates based on the control program. Further, depending on the specifications of APC and ATC, there are some that accompany the axial movement control operation of the NC machine tool in the operation cycle by the M code instruction or the T code instruction. In this case, position coordinate values for axis movement control operation,
It was necessary to create the axis movement control data such as the selection of the rapid feed / cutting feed mode, the cutting feed rate, and the axis movement order in the control program.

[0003]

By the way, APC and A
The type and specifications of TC, etc. may change, and the operation cycle of APC, ATC, etc. may change. In that case, conventionally,
Whenever the operation cycle of APC, ATC, etc. changes,
The control program on the NC device side must be changed,
There is a problem in that a great number of man-hours are required to create this control program. Further, since the NC device is connected to the APC or ATC via the PC device for control,
An interface (I / F) is added every time the operation cycle of APC, ATC, etc. changes, and there is a problem that the work is complicated and human error is likely to occur. The present invention has been proposed to solve the above problems, and achieves the following objects. That is, the present invention provides axis movement control data for axis movement control operation during execution of the APC or ATC operation cycle according to a predetermined command,
An object of the present invention is to provide an axial movement control device for an NC machine tool that can be easily selected from the PC device side.

[0004]

The present invention was devised in order to solve the above-mentioned problems, and operates an attached device including an automatic tool changer and an automatic pallet changer provided in an NC machine tool. A controller for an NC machine tool for controlling a moving operation of a moving shaft of the NC machine tool according to a predetermined operation command from the NC device for a cycle, the moving shaft being on the NC device side. The axis movement control data is registered based on the position number data, which includes at least the position coordinate value data, the fast feed / cut feed mode selection data, the cutting feed speed value, and the movement order data of the movement axis. Section and P of the NC machine tool
In the C device side, in order to control the movement operation of the movement axis during execution of the operation cycle corresponding to a predetermined operation command to the NC device, the desired axis movement control of the axis movement control data registration unit Position number setting means for setting the position number data for selecting data, and the set position number set by the position number setting means on the PC device side when an operation command for the operation cycle is issued. Axis movement request signal output means for outputting an axis movement request signal to the NC device side together with data, and the axis movement request signal output from the axial movement request signal output means of the PC device on the NC device side and the With the set position number data, the axis move control data corresponding to the set position number data registered in the axis move control data registration unit is read and And a shaft movement control unit for outputting a shaft movement completion signal to the PC device side after performing the shaft movement control of each moving portion of the NC machine tool based on the control data. This is a control device for a characteristic NC machine tool.

[0005]

In the invention having the above construction, when the position number data and the axis movement request signal are set on the PC side, N is set.
When the axis movement control unit on the C device side completes the axis movement control according to the axis movement control data based on the position number data of the axis movement control data registration unit, it returns an axis movement completion signal to the PC device. In this way, it becomes possible to arbitrarily select the axis movement control by the M code of the automatic pallet changing device and the axis movement control by the T code of the automatic tool changing device from the PC device side.

[0006]

First, the outline of the present invention will be described with reference to FIG. The present invention outputs the position number data and the axis movement request signal preset by the PC device 1 to the NC device 2 while the NC device 2 is executing the M code command or the T code command. The axis movement control unit
Position coordinate values of the axis movement control data registration section (axis movement parameter memory section) corresponding to the position number data transmitted from the PC device 1 side, fast feed / cut feed mode selection data, cutting feed rate, The axis movement control data such as the movement order for each axis is read, the axis movement control is performed according to this data, and when the axis movement control is completed, the axis movement completion signal is returned to the PC device 1. In this way, the axis movement control data for the APC or ATC operation cycle can be arbitrarily selected from the PC device 1 side.

An embodiment according to the present invention will be described in detail below with reference to the drawings. FIG. 3 shows the APC of the present invention.
NC that can perform axis movement control during execution of M code and T code that are commands to execute the operation cycle of ATC and ATC
It is a block diagram of a control device of a machine tool. Reference numeral 11 is a machining program memory for storing a machining program, in which M code instructions and A codes for performing APC operations are executed.
It includes a T code command for performing a TC operation. Reference numeral 12 is a machining program interpreting unit for interpreting the machining program, and 13 is the PC device 1 based on the interpretation of the machining program interpreting unit.
Is a machining program execution unit for instructing the side or the servo interpolation unit 14 side to execute the machining program. A servo control unit 15 outputs a servo motor output pulse signal and controls the servo motor by feeding back a position feedback signal and a speed feedback signal from the servo motor (not shown) side. The servo interpolation unit 14 outputs servo control data to the servo axis control unit 15.

The PC device 1 has a position number setting means 1a and an axis movement request signal output means 1b. That is, the position number setting means 1a sets the position number data for reading the data for axis movement control stored in the axis movement parameter memory section (axis movement control data registration section) 16 described later. . When the operation command of the operation cycle is instructed, the axis movement request signal output means 1b is used for the PC device 1
The axis movement request signal for requesting the axis movement from the side to the NC device 2 side is output together with the position number data. 1
Reference numeral 6 denotes an axis movement parameter memory (axis movement control data registration section), which is position coordinate value data of each movement axis of each movement part of the NC machine tool, selection data of fast-forwarding / cutting feed mode, cutting feed speed value, moving axis. The data for axis movement control including at least the movement order data is registered. 17
Is an axis movement control unit, which is located on the NC device 2 side, and uses the axis movement request signal of the axis movement request signal output means 1b output from the PC apparatus 1 side and the position signal data set in the position number setting means 1a. , Axis movement parameter memory unit 16
Further, the data for axis movement control corresponding to this position signal data is read, and the data for performing movement control of each movement axis is output to the servo axis control unit 15 according to the data for axis movement control to perform axis movement control. To do. Then, the axis movement control unit 17 outputs an axis movement completion signal to the PC device 1 side when the axis movement control ends.

FIG. 2 is a time chart of the axis movement control according to the present invention. In the figure, PSF indicates an external axis movement request signal, which is a signal for requesting NC apparatus biaxial movement control from the PC apparatus 1 side. That is, when the position number data is set on the PC device 1 side during M strobe and T strobe output, and then this signal (PSF) is set to 1, the NC device 2 side reads the position number and moves the axis to that position coordinate value. To start. On the NC device 2 side, when the axis movement control is completed, NC
The external axis movement completion signal (PSFN) is set to 1 on the device 2 side. Then, on the PC device 1 side, after confirming PSFN = 1, the external axis movement request signal (PSF) is set to 0.

FIG. 4 is a flow chart of the axis movement control processing of the present invention. The axis movement control process will be described based on the flowchart of FIG. The machining program is interpreted by the machining program interpreting unit 12 on the NC device 2 side, and the M code command or the T code command is transmitted from the machining program executing unit 13 to the PC.
When output to the device 1 side (step S1), the PC device 1
It is determined whether the M code command or T code command output by the axis movement request signal output means 1b on the side is the M code command or T code command corresponding to outputting the axis movement request signal (steps S2 and S3). ). As a result of the judgment, if it is an M code command or a T code command corresponding to outputting the axis movement request signal, the PC device 1 sets the position number set in advance corresponding to the operation cycle by these M code command or T code command. (# 1 to # 16) are output to the NC device 2 side together with the axis movement request signal (PSF). Then, the NC device 2 side reads this position number (step S4), and judges whether this position number matches the position number given to the axis movement control data in the axis movement parameter memory unit 16 ( Step S5a, Step S5b, ... Step S5n), when they match, the position coordinate value data of this position number, the fast feed / cut feed mode selection data, the cutting feed speed, and the movement sequence data for each axis, etc. The control data is read from the axis movement parameter memory unit 16 (steps S6a and S6).
b, ... Step S6n).

Next, the axis movement control section 17 controls the position coordinate value data corresponding to the position number data, the fast feed / cut feed mode selection data, the cutting feed speed, and the axis movement control data such as the movement sequence data for each axis. Based on the above, the servo axis control unit 15 is instructed to perform axis movement control (step S
7). When the axis movement control is completed by the servo axis controller 15, the axis movement controller 17 outputs an axis movement completion signal (PSFN) to the PC device 1 side (step S8). The NC device 2 determines whether or not there is an end signal (FIN signal) for the axis movement control process (step S9). If there is an end signal (FIN signal), the coordinates are determined when the axis movement control ends in step S8. The system is set (step S10), the process of the present invention is completed, and the process proceeds to the next step.

[0012]

As described above, in the invention having the above-described structure, when the axis movement control is required during the operation of the predetermined M code command or T code command, the PC device side outputs the desired position number data. Output the axis movement request signal, and
The C device side performs the axis movement control according to the axis movement control data of the position number data of the axis movement control data registration unit, and when the axis movement control is completed, the axis movement completion signal is returned to the PC device. The axis movement control data registered in the movement control data registration unit can be arbitrarily selected from the PC device side. Further, since it becomes possible to arbitrarily select the axis movement control data from the PC side, the operation cycle of the M code and the T code command accompanied by the axis movement control does not need to change the software on the NC side. Can be realized by simply changing the software (position number data) on the PC device side, and the I / F of the PC device and the NC device is generalized, which has the remarkable effect of facilitating maintenance.

[Brief description of drawings]

FIG. 1 is a schematic explanatory view of the present invention.

FIG. 2 is a time chart diagram of axis movement control of the present invention.

FIG. 3 is a block diagram of a control device for an NC machine tool that performs axis movement control during execution of M code and T code according to the present invention.

FIG. 4 is a flowchart of a process of axis movement control according to the present invention.

[Explanation of symbols]

 1 PC device 1a Position number setting means 1b Axis movement request signal output means 2 NC device 11 Machining program memory 12 Machining program interpreting section 13 Machining program executing section 14 Servo interpolation section 15 Servo axis control section 16 Axis movement parameter memory section 17 Axis movement Control unit

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location G05B 19/05

Claims (1)

[Claims] 1. Movement of a moving shaft of the NC machine tool according to a predetermined operation command from the NC machine for an operation cycle of an attached device including an automatic tool changer and an automatic pallet changer provided in the NC machine tool. N for controlling movement
A control device for a C machine tool, which is on the NC device side and includes at least position coordinate value data of the moving axis, selection data of a fast feed / cutting feed mode, a cutting feed rate value, and movement sequence data of the moving axis. An axis movement control data registration unit that registers axis movement control data based on position number data, and the operation corresponding to a predetermined operation command to the NC apparatus on the PC device side of the NC machine tool. Position number setting means for setting the position number data for selecting the desired axis movement control data of the axis movement control data registration unit to control the movement operation of the movement axis during the cycle execution, and the PC device side Then, when the operation command of the operation cycle is instructed, the axis movement request signal is sent to the N together with the set position number data set by the position number setting means.
The axis movement request signal output means for outputting to the C apparatus side, and the axis movement request signal and the set position number data output from the axis movement request signal output means of the PC apparatus in the NC apparatus side, The axis movement control data corresponding to the set position number data registered in the movement control data registration section is read, and the axis movement control of each movement part of the NC machine tool is performed based on the axis movement control data. A controller for an NC machine tool, comprising an axis movement control unit for outputting an axis movement completion signal to the PC device side after the axis movement control is completed.