Numerical controller having function of superimposing superposition cycle synchronized with periodic operation cycle

• US 9,891,613 B2
• Filed: 06/09/2015
• Issued: 02/13/2018
• Est. Priority Date: 06/13/2014
• Status: Active Grant

• Current Assignee: Fanuc Corporation
• Original Assignee: Fanuc Corporation
• Inventors: Makino, Iwao
• Primary Examiner(s): Von Buhr, M. N.
• Application Number:
  US14/734,011
• Publication Number:
  US 20150362910A1
• Time in Patent Office: 980 Days
• CPC Class Codes: G05B 19/402 characterised by control arrangements for positioning, e.g. centring a tool relative to a hole in the workpiece, additional detection means to correct position G05B19/19 takes precedence
• CPC Class Codes: G05B 19/4155 characterised by programme execution, i.e. part programme or machine function execution, e.g. selection of a programme
• CPC Class Codes: G05B 2219/35519 Machining data and tool data
• CPC Class Codes: G05B 2219/41457 Superposition of movement

Abstract

A numerical controller controls a machine tool which carries out machining by moving a workpiece or a tool using a periodic operation cycle for repeatedly executing the same operation. The numerical controller stores command data of each execution period of a superposition cycle superimposed with the periodic operation cycle. Command data sets of the superposition cycle are synthesized every execution cycle in synchronization with execution timing of the periodic operation cycle.

Claims

1. A numerical controller for controlling a machine tool which carries out machining by moving a workpiece or a tool using a periodic operation cycle for repeatedly executing the same operation, the numerical controller comprising:

a superposition cycle storing unit configured to store command data of each execution period of a superposition cycle superimposed with the periodic operation cycle;

a superposition cycle selecting unit configured to start superimposition of the superposition cycle in synchronization with execution timing of the periodic operation cycle if the superposition cycle is made effective, and to end superimposition of the superposition cycle in synchronization with execution timing of the periodic operation cycle if the superposition cycle is made ineffective; and

a superposition cycle synthesizing unit configured to synthesize command data of the superposition cycle every execution period in synchronization with execution timing of the periodic operation cycle.

2. The numerical controller according to claim 1, wherein the superposition cycle storing unit stores one or more superposition cycles, and

the superposition cycle selecting unit can select one or more superposition cycles to be superimposed.

3. The numerical controller according claim 1, further comprising a changing unit configured to change command data of the superposition cycle of the superposition cycle storing unit during execution of the periodic operation cycle.

4. The numerical controller according to claim 2, further comprising a changing unit configured to change command data of the superposition cycle of the superposition cycle storing unit during execution of the periodic operation cycle.