Title: High-precision sensor for measuring outside diameter
Application Number: 93109162 Application Date: 1993.07.30
Publication Number: 1098195 Publication Date: 1995.02.01
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01B3/18,G01B7/12
Applicant(s) Name: Harbin Polytechnic Univ. Address: 150006
Inventor(s) Name: Ma Yunhui, Ma Yulin
Attorney & Agent: HUANG JINYANG
Abstract:
     Based on working principle of vernier calipers, a step motor drives indicating rule with a contact sensor set at its tail to do relative movement. The contact pressure generated when indicating rule is contacted to surface of workpiece can give out position signal. Based on the signal and the stepping signal of step motor the external diameter may be calculated out by microcomputer. The measure precision can be /- 0.01 mm.
Time: 9
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