Bridge type coordinate measuring machine
US4594791A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 24, 1985 |
| Grant date | Jun 17, 1986 |
| Priority date | — |
| Expiry date | Jan 24, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B5/008
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A bridge type coordinate measuring machine characterized by a bridge (20) that has a closed loop configuration encircling the measuring machine base (10). The bridge (20) includes two uprights (21, 22), an upper member (23) connecting the uprights together and at least one lower member (24) connecting the uprights together below the upper surface (11) of the base (10). Bearings (41) for the bridge are offset inwardly from the vertical axes of the uprights of the bridge and a guideway (12, 13), along which the bearings travel, is located on each side of the base. The bearings (41) operate upwardly, downwardly and sidewardly against the surfaces of the guideways (12, 13) located on the sides of the base (10). This arrangement both stiffens and raises the resonant frequency of the bridge, thereby improving the measuring accuracy and repeatability of the coordinate measuring machines performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.