Clamping device
US7232121B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 7, 2003 |
| Grant date | Jun 19, 2007 |
| Priority date | — |
| Expiry date | Nov 5, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23Q1/0018
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An annular plug portion (21) projects from a clamp pallet (2). An annular shuttle member (23) is supported by the plug portion (21) to be movable in the vertical direction. A work pallet (3) is provided with a tapered inner peripheral surface (12) which makes an engagement with a tapered outer peripheral surface (28) of the shuttle member (23). A transmission member (29) is inserted into an upper portion of a cylindrical hole (21a) of the plug portion (21), while a rod (31) is inserted into a lower portion of the cylindrical hole (21a). When the rod (31) is driven downward for clamping, an output portion (36) of the rod (31) moves the work pallet (3) downward through engaging balls (34) to form a transmission gap (G) between a pushing portion (31a) of the upper end of the rod (31) and a pressure receiving portion (29b) of the transmission member (29). When the rod (31) is driven upwards for unclamping, the pushing portion (31a) pushes upwards the work pallet (3) through the transmission member (29).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.