Multi-spindle head-replacing machine tool
US4776081A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 1987 |
| Grant date | Oct 11, 1988 |
| Priority date | — |
| Expiry date | Oct 20, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T483/1873
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
In multi-spindle head-replacing type machine tool comprising a machining unit disposed on a base for advancing and retreating movements between an original position and a machining position, a first annular guide rail including a movable rail integral with the machining unit and a stationary rail to surround the machining unit which is located in the original position, a second annular guide rail disposed concentrically with and at a place axially offset from the first guide rail, a plurality of multi-spindle heads travellably carried on each of the first and second guide rails, first and second index mechanisms releasably connected respectively to the multi-spindle heads on the first and second guide rails for driving such multi-spindle heads for angular displacement, and an elevator mechanism disposed sideways from the first and second guide rails at a place offset from the movable rail for providing replacement of the multi-spindle heads between the first and second guide rails, a part of the stationary rail of the first guide rail and a part of the second guide rail are divided as lift rails in a circular arc at a place corresponding to the elevator mechanism, respectively, and…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.