Short stroke press with automated feed mechanism
US4653311A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 31, 1986 |
| Grant date | Mar 31, 1987 |
| Priority date | — |
| Expiry date | Jan 31, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB30B15/30
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of controlling a press having a slide mechanism mounted for reciprocating movement, a press drive for cycling the slide mechanism and including a press drive shaft and a mechanism for driving the shaft at a controllable angular velocity, and an automated feed mechanism for transferring workpieces in and out of at least one work station in the press in synchronism with the reciprocating movement of the press slide, the method comprising the steps of driving the press drive shaft at a first, relatively fast angular velocity during a "closed" portion of each cycle of reciprocating movement of the press slide, the "closed" portion of each cycle including that portion of the cycle during which the press slide is working one or more workpieces, and driving the press drive shaft at a second angular velocity, slower than the first angular velocity, during an "open" portion of each cycle of reciprocating movement of the press slide, the second angular velocity being sufficiently slow to allow the automatic feed mechanism to transfer workpieces in and out of the work station in the press during the "open" portion of each cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.