Test run control method

Details Test run control method Test run control method

1990-10-01

1992-09-01

Smith, Jerry

Boots, shoes, and leggings

36447401, 36447422, G05B 19405, G05B 19403

Patent

active

051445506

DESCRIPTION:

BRIEF SUMMARY
DESCRIPTION

1. Technical Field
The present invention relates to a test run control method for testing a computerized numerical control (CNC) apparatus to check an NC program run thereby, and more particularly to a test run control method which can simplify a test run process and edit the NC program while a reverse function is being performed.
2. Background Art
Generally, a newly generated NC program is registered in a memory of a computerized numerical control (CNC) apparatus, and thereafter checked for errors by a test run. If the NC program is to be modified, the tool is returned to a certain position by a reverse function, for example, the test run is interrupted, and then the operation of the computerized numerical control apparatus is shifted from a memory mode to an edit mode. The reverse function is a function by which the tool is returned from the present position along the path which has been followed by the tool so far, the reverse function being initiated by a reverse command signal (reverse travel). When the reverse command signal is removed, the tool resume machining the workpiece from the position to which the tool has returned (re-forward travel).
If the NC program is modified in the edit mode, since modal data for effecting a preliminary processing are varied, the test run has to be started again from several blocks before the block where the test run has been interrupted or from the first block.


DISCLOSURE OF THE INVENTION

The present invention has been made in view of the aforesaid drawbacks. It is an object of the present invention to provide a test run control method which simplifies a test run process and allows an NC program to be edited while a reverse function is being performed.
To achieve the above object, there is provided in accordance with the present invention a test run control method for testing a computerized numerical control (CNC) apparatus to check a generated NC program, comprising the steps of reading data block by block from an NC program in response to a test run start command, converting the data into execution blocks while forwarding a tool in a forward travel, and storing the data in the form of execution blocks and modal data necessary for a preliminary processing in a reverse function memory, reversing the tool in a reverse travel based on the data in the form of execution blocks stored in the reverse function memory in response to a reverse command, stopping the reverse travel at a given time in response to a stop command to allow the NC program to be edited in a prescribed range, editing the program in the prescribed range with editing means, and effecting the preliminary processing based on the modal data stored in the reverse function memory in response to a test run restart command, and executing the edited NC program.
During the forward travel, the data in the form of execution blocks and the modal data necessary for the preliminary processing are stored in the reverse function memory, and the reverse or re-forward travel is carried out on the basis of the stored data.
When the stop command is issued, the execution of the NC program is stopped at a certain time. The operator effects an editing operation to edit the NC program only in the range of blocks for which the data in the form of execution blocks and the modal data are stored in the reverse function memory. The edited NC program starts being executed, on the basis of the modal data, from the position in which the execution of the NC program has been stopped.


BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1(a) is a view illustrative of a test run control method according to the present invention;
FIG. 1(b) is a view illustrative of the manner in which a reverse switch is turned off during a reverse travel according to the test run control method of the present invention;
FIG. 1(c) is a view illustrative of an editing process during a forward travel according to the test run control method of the present invention;
FIGS. 2(a) and 2(b) are a flowchart of a sequence of the test run control method accordi

REFERENCES:
patent: 4531182 (1985-07-01), Hyatt
patent: 4891763 (1990-01-01), Kuriyama
patent: 5029329 (1991-07-01), Miyajima
patent: 5051676 (1991-09-01), Seki et al.

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