Apparatus for monitoring the angular position of a workpiece
US4934882A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 25, 1989 |
| Grant date | Jun 19, 1990 |
| Priority date | — |
| Expiry date | Oct 25, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T409/308736
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Apparatus for monitoring or tracking the angular position of a rotating camshaft during grinding or milling of cams on the camshaft. The cams may be milled, but in the apparatus shown, they are ground by abrasive belts which are guided by actuators driven by CNC controlled motors, to obtain the desired cam contours. Monitoring is carried out by a pick-up member engageable with a locating pin on the camshaft. The pick-up member has a slot for receiving the locating pin between a locator pad and a leaf spring. The leaf spring clamps the pin against the locator pad. The pick-up member will closely follow the rotation of the camshaft despite variations in pin size, and feed back the exact rotative position of the camshaft to the CNC controlled motors consistently and accurately.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.