Patent · US Expired

Probe head of the switching type

US5018278A · kind A · utility

15Cited by

14References

9Claims

0Family size

Assignee

Carl-Zeiss-Stiftung, Heidenheim/Brenz · DE

Inventors

Hans-Peter Aehnelt · Oberkochen, DE
Eckhard Enderle · Aalen, DE
Michael Wirth · San Antonio, US

Key dates

Filing date	Nov 29, 1989
Grant date	May 28, 1991
Priority date	—
Expiry date	Nov 29, 2009

Classification

Technology area (CPC G)Physics
CPC primaryG01B7/012
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The invention contemplates a pneumatically driven piston as a preloading device, continuously urging the movable part (11) of a probe head into precise seating engagement with its fixed bearing (10), (12) in the housing of the probe head. The piston is movable in a cylinder (4) that is supplied with variable regulated pressure determined by a controlled regulating valve (16). Different contacting forces can be automatically and rapidly adjusted by the control system (18) of a coordinate-measuring machine to which the probe head is mounted, and the probe head can be tared to compensate for the different individual weights of successively different probe pins that are used in a given program of multiple-point coordinate measurements on a workpiece.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.