Electric servo motor punch press ram drive
US5588344A · kind A · utility
27Cited by
8References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 13, 1994 |
| Grant date | Dec 31, 1996 |
| Priority date | — |
| Expiry date | Jun 13, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/8843
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A punch press ram drive is described in which a reversible electrical servo motor is coupled to a crankshaft having an eccentric journal driving a pitman arm connected to the ram. The electrical servo motor is operated by program controls so as to either cause rotation or oscillation of the crankshaft to drive the ram through various programmed stroking modes, in which punch position, velocity, acceleration, varying over the course of a stroke may be programmed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.