Numerical controller

• US 20050248304A1
• Filed: 05/06/2005
• Published: 11/10/2005
• Est. Priority Date: 05/10/2004
• Status: Abandoned Application

• Current Assignee: Fanuc Ltd (Fanuc Corporation)
• Original Assignee: Fanuc Ltd (Fanuc Corporation)
• Inventors: Kobayashi, Masanori, Endou, Katuhiro
• Application Number:
  US11/123,132
• Publication Number:
  US 20050248304A1
• Time in Patent Office: Days
• US Class Current: 318/575
• CPC Class Codes: G05B 19/186 Generation of screw- or gearlike surfaces
• CPC Class Codes: G05B 19/414 Structure of the control system, e.g. common controller or multiprocessor systems, interface to servo, programmable interface controller
• CPC Class Codes: G05B 2219/42186 Master slave, motion proportional to axis
• CPC Class Codes: G05B 2219/50218 Synchronize groups of axis, spindles

Abstract

A numerical controller capable of performing synchronous control of a master axis and a slave axis in different control systems at a desired ratio and with a desired relation in phase. A workpiece attached to a master axis of a first system is machined into a first gear by a rotary tool attached to a slave axis of the first system and machined into a second gear by a rotary tool attached to a slave axis of a second system. Synchronous motion amounts of the slave axes are obtained by multiplying a motion amount of the master axis by set synchronous ratios to be converted into motion amounts of the slave axes. The synchronous motion amounts are added to the motion commands for the slave axes to drive the slave axes, so that the slave axes are driven at the set ratios in synchronism with the master axis. Further, the motion commands for the slave axes are compensated such that positional phases of the slave axes have set relations with respect to a positional phase of the master axis.

Claims

1. A numerical controller for synchronously controlling a master axis and at least one slave axis in a plurality of control systems, said numerical controller comprising:

setting means for setting a synchronous ratio of the slave axis with respect to the master axis;

synchronous motion amount producing means for producing a synchronous motion amount by multiplying a motion command for the master axis by the set synchronous ratio; and

synchronous motion commanding means for determining a synchronous motion command for the slave axis by adding the synchronous motion amount to a motion command for the slave axis.

2. A numerical controller according to claim 1, further comprising means for setting phase adjustment positions of the master axis and the slave axis, and compensation means for compensating the synchronous motion command for the slave axis such that phases of the master axis and the slave axis coincide with the set phase adjustment positions.