Quick setting and release actuator for work holder
US5743539A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 1996 |
| Grant date | Apr 28, 1998 |
| Priority date | — |
| Expiry date | Jun 10, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/5633
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A quick setting and release actuator for cooperating with an axially movable chuck for holding a tubular workpiece in fixed position includes an anchor member (12) that is mounted in fixed relationship relative to a housing of a machine tool (20) and a thrust member (42) carried by a pivotally mounted carrier member (38) that pivots towards and away from the anchor member to drive the thrust member (42) into engagement with the end wall (44) of a multi-segment collet (26) to cause the collet to ride along its segment bearing surfaces (30) in a radial direction to engage the periphery of a workpiece (24) to be retained in the machine tool (20). Thrust member (42) may be pivotally mounted by a pivot connection (48) on the carrier (38) so that the thrust member will align itself with the end wall (44) of collet (26) even when the carrier is not precisely parallel with the collet end wall. In an alternative arrangement, rounded thrust pins may be used to transmit axial force to the collet (26) and this arrangement may include a thrust transmitting spacer (86). A lever (50) and cam (52) arrangement is provided to exert positive force on the carrier (38) at its terminal pivoted position …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.