High speed spindle with preloaded bearings
US4519734A · kind A · utility
19Cited by
11References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 22, 1982 |
| Grant date | May 28, 1985 |
| Priority date | — |
| Expiry date | Jun 22, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T409/309352
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A high speed spindle preferably of the motorized type is described having means for axially preloading the spindle bearings and hydraulic preload locking means for locking the preload against diminution by expected axial pull-out forces exerted on the spindle shaft counter to the preload during machining. The hydraulic locking action is released in the event unexpectedly high, potentially damaging axial pull-out forces are encountered during machining.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.