JPS63314603A - Numerical controller - Google Patents

Abstract

PURPOSE:To change the contents of a working program concurrently with the change of a tool path with use of an input manual pulse, by using a means which compounds the correction value with the tool path data on the working program of a 1st memory and then changes the working program itself. CONSTITUTION:A 1st reading program memory 11 stores the working program prescribing a tool path for each block every time this program is read out. While a 2nd handle pulse memory 12 stores the correction value obtained by a manual pulse synchronously with the memory 11. Then a changing means is added to synthesize 13 (working program synthesizing part) said correction value with the tool path data on the working program of the memory 11 and changes this program itself. In such a constitution, a handle interruption is applied by a manual pulse generator and at the same time the working program is changed. Thus it is not required to change the working program later and to easily regenerate a corrected tool path in the next working process.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a numerical control device equipped with a handle interrupt function.

(Prior Art) A typical numerical control device is equipped with a manual pulse generator for initial setting of machining contents by a machine tool or when fine adjustment of machining amount is required. This is a function that allows the operator to freely change the tool path commanded by the program by inputting handle pulses while observing the actual machining status in the automatic operation mode of the numerical control device, and is known as the so-called handle interrupt function. It is being

(Problem to be solved by the invention) With the handle interrupt function of such a conventional numerical control device, the tool path is changed only for the machining that is being executed at that time, and automatic operation is not specified. Since the current machining program itself is not changed, if you want to continue automatic operation according to the corrected tool path, edit the machining program with a device that has a separate editing function for the numerical control device. It is necessary to newly read it into the numerical control device. However, in this case, there is a problem in that the burden on the operator increases when the machining program is complex or when delicate corrections are required.

The present invention has been made in view of the above points, and an object of the present invention is to provide a numerical control device that can change the machining program contents at the same time as changing the tool path based on input manual pulses.

(Means for Solving the Problems) According to the present invention, in a numerical control device having a command function for changing a programmed tool path based on a manual pulse input during automatic operation of a machine tool, the tool path is a first memory means for storing a machining program defining a block unit each time it is read; a second memory means for storing a correction amount by the manual pulse in synchronization with this memory means; It is possible to provide a numerical control device characterized by comprising: a changing means for combining the correction amount with the tool path data of the machining program in the memory means to change the machining program itself.

(Function) In the numerical control device of the present invention, the input manual pulse interrupts the interpolation pulse for each axis that defines the tool path, changes the actual path of the tool, and also changes the tool path of the read machining program. It is combined with the data and also modifies the stored machining program itself.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing a numerical control device according to an embodiment of the present invention. Reference numeral 1 denotes a machining program memory that stores a machining program read into the numerical control device from an NC tape or the like. The machining program memory 1 is a storage section having a RAM configuration connected to a processor (not shown), and is read out one block at a time to a machining program decoding section 3 in accordance with a predetermined sequence via a machining program reading section 2. The pulse interpolation control section 4 performs pulse interpolation using data defining the tool path according to the decoded program.

Reference numeral 5 denotes a manual pulse generator that generates a predetermined manual pulse by rotating a handle. For example, by having the operator operate a dial as shown in Fig. 2 for each tool movement axis, a constant pulse can be generated during automatic operation. Handle pulses (manual pulses) are generated at a rate of . The steering wheel pulses from the manual pulse generator 5 are integrated by a steering wheel pulse counter 6, and sent from the steering wheel pulse reading section 7 to the pulse synthesizing section 8 in synchronization with the pulse interpolation control section 4.

Reference numeral 9 denotes a pulse distribution control section, which forms a distribution pulse command for driving the tool of the machine tool for each axis by a composite pulse with a handle interrupt. The present invention provides the above N
In a conventional numerical control device that calls a C program, decodes it, interpolates it, distributes it, and then drives it, we would like to not only add handle pulses to the interpolated data, but also reflect the correction results in the machining program itself. For this purpose, a machining program changing section 10 is provided.

This machining program changing section 10 has a function of combining the machining program from the machining program reading section 2 with the handle pulse from the handle pulse reading section 7, changing each program, and rewriting the contents of the machining program memory 1. are doing.

FIG. 3(a) is a block diagram showing an example of the configuration of the machining program changing section 10, which is the gist of the present invention. The second memory 12 stores the sequence number shown in FIG.
It stores axis handle pulses and Y-axis handle pulses. And these first. In the machining program synthesis section 13, which manually inputs the data in the second memory 11, 12, the correction amount is synthesized with the tool path data.

FIG. 4 is a flowchart showing the processing flow in the machining program synthesis section 13, which is started every time the distribution of the read machining program is completed for one block.

If the X-axis handle pulse in the handle pulse memory 12 is not ; (step a), the X-axis data content is read from the program content of one block assigned a sequence number, and the transfer set by the manual pulse generator 5 is performed. 'l quantity unit (step b). Add the above X-axis handle pulse to the changed value to change the data to the corrected decimal point.Step C)
Rewrite all data related to the axis (step d
). Subsequently, similar rewriting processing is performed for data related to the Y axis (step e).

Incidentally, if the X-axis steering wheel pulse in the steering wheel pulse memory 12 is ;, the process immediately goes to step e.

In this way, when the handle pulse of either the X axis or the Y axis is not (step f), the machining program synthesis unit 13
The read program memory 11 rewritten in
The contents of one block are replaced with one block in the machining program memory 1 indicated by the sequence number, and the change is completed (step g).

In addition, if the operator completes the correction for a certain eight tool shifts without rewriting the data in the machining program memory 1 block by block as in step g above, and the correction results in a satisfactory result. Alternatively, the machining program may be changed all at once. Also, CR
By connecting a T-display or the like, the locus and machining program can be displayed and the operator can change them after confirming them.

As above, this invention has been described in some detail with respect to its most preferred embodiment, but the description of the preferred embodiment does not include variations in detailed parts of the configuration or contrary to the spirit of the invention as described in the claims. It is clear that various modifications or combinations thereof may be made.

(Effects of the Invention) As explained above, according to the present invention, the machining program is changed at the same time as the handle interrupt is generated by the manual pulse generator, so that the machining program cannot be modified by manual processing after the fact. It is no longer necessary,
It is possible to provide a numerical control device that can easily reproduce the corrected tool path during the next machining process and can reduce the burden on the operator.

[Brief Description of the Drawings] Fig. 1 is a block diagram showing one embodiment of the present invention, Fig. 2 is a diagram showing an example of a dial of a manual pulse generator, and Fig. 3 is a diagram showing an example of a dial of a manual pulse generator.
The figure is a diagram illustrating the configuration of the machining program change section.
The figure is a flowchart showing the flow of machining program synthesis processing. 1... Machining program memory, 3... Decoding section, 5.
...Manual pulse generator, 8...Pulse synthesis section, 10.
...Machining program change department. (1>) (O) Figure 4

Claims (2)

[Claims] (1) In a numerical control device that has a command function to change a programmed tool path based on manual pulses input during automatic operation of a machine tool, a machining program that defines the tool path is blocked every time it is read. a first memory means for storing the correction amount by the manual pulse in synchronization with the memory means; a second memory means for storing the correction amount by the manual pulse in synchronization with the memory means; A numerical control device characterized by comprising: a changing means for composing quantities and changing the machining program itself. (2) The changing means changes the contents of the memory storing the machining program according to the amount of correction by the manual pulse.
) Numerical control device as described in item.