Numerically controlled apparatus

Details Numerically controlled apparatus Numerically controlled apparatus

1990-03-27

1990-12-25

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

Program- or pattern-controlled systems

318571, 318632, 318563, 318615, 36447432, 36447435, G06F 1100

Patent

active

049806270

ABSTRACT:
A numerically controlled apparatus wherein a tool can be returned by a high speed retrograding operation without damaging a chip of a tool or a work. The numerically controlled apparatus comprises a command executing block which decodes a working program for each of block commands and controls controlling driving of a tool to work a work. A retrograde command storage block extracts data necessary for the production of a retrograde block command from the working program and stores the extracted data therein. Upon reception of a retrograding signal, an escapement command producing block produces an escapement block command, and a retrograde block command producing means produces a retrograde block command. Then, an escapement/retrograde command execution controlling block causes the command executing block to execute the escapement block command and the retrograde block command.

REFERENCES:
patent: 4706003 (1987-11-01), Nakashima et al.
patent: 4718078 (1988-01-01), Bleidorn et al.
patent: 4779204 (1988-10-01), Kanematsu et al.
patent: 4839817 (1989-06-01), Fujimoto
patent: 4902951 (1990-02-01), Ohta et al.

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