Multi-spindle synchronous drive unit and gear cutting machine employing the same
US5037252A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 1990 |
| Grant date | Aug 6, 1991 |
| Priority date | — |
| Expiry date | Jan 30, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T409/105724
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A multi-spindle synchronous drive unit for synchronously driving a plurality of spindles, includes a plurality of motors for respectively driving the spindles, a plurality of encoders for respectively detecting rotational positions of the motors, a plurality of phase locked loop control units for respectively controlling a drive of the motors and for receiving as feedback signals detection signals respectively output by the encoders, a reference pulse oscillator for outputting a pulse signal, and a plurality of multipliers for multiplying the pulse signal by multiplication factors respectively corresponding to rotational speed ratios of the spindles and for respectively outputting speed command pulse signals to the phase locked loop control unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.