Roundness measuring apparatus
US8336223B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 2010 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | Feb 15, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B21/047
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A roundness measuring apparatus includes a stylus stocker and a controller. The stylus stocker stores plural types of styli prepared corresponding to shapes of measurement sites of a measurement target object. The stylus stocker can store styli in such a manner that each stylus can be held thereon and taken out thereof. The stylus stocker is provided outside a measurement region, which is determined on the basis of the operation range of a turntable and a detector driving mechanism. The detector driving mechanism can move the detector to the outside of the measurement region. When a measurement command is given, the controller carries out roundness measurement of the object while controlling the turntable and the detector driving mechanism. When a stylus replacement command is given, the controller carries out stylus replacement operation between a detector main unit and the stylus stocker while controlling the detector driving mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.