Device for accurate position control of a force-transmitting system
US6373171B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 12, 2001 |
| Grant date | Apr 16, 2002 |
| Priority date | — |
| Expiry date | Jul 12, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21B31/20
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Device for accurate position control of a force-transmitting system comprising at least one solid-state piezo actuator (7), wherein the piezo actuator (7)comprises a metal block (11) which is positioned between end plates (12, 13) and in the direction of the force has at least one duct (14) into each of which a stacked piezo element (15) fits. The height of the block (11) is shorter than the length of the piezo elements (15) and the difference in height corresponds to the shortening of the piezo elements (15) under the maximum permissible axial load acting thereon, and wherein the piezo actuator (7) is incorporated transversely to the direction of force, without play, in such a way into an element of the force-transmitting system that only a force in the axial direction of the ducts (14) can be transmitted to the piezo elements (15).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.