Title:
METHOD AND APPARATUS FOR MEASURING SHAPE
Document Type and Number:
Japanese Patent JPH01152306
Kind Code:
A
Abstract:
PURPOSE:To measure a sectional shape of an object to be measured online and with a high accuracy, by scanning an object being measured widthwise with a pair of displacement sensors to detect a displacement of the surface and back thereof. CONSTITUTION:A pair of optical displacement sensors 1 is arranged on both sides of an object 2 to be measured and driven horizontally at each fixed pitch with a ball screw 3 rotated with a drive motor M. By this scanning a displacement data is obtained corresponding to the shape of the surface and back of the object 2 being measured. The displacement data is amplified with amplifiers 14 and 14 to be converted with an A/D converter 15 into digital from analog and a sectional shape of the object being measured is automatically measured by an arithmetic processing with a data processing section CPU 11 to be shown on a CRT display device. The pair of sensors have a measuring range thereof partially overlapped in the direction Y thereby enabling measurement of deformation such as sag from the intrinsic shape of the object being measured.
Inventors:
YAMADA SEIJU
KAWAMURA TAKASHI
KAWAMURA TAKASHI
Application Number:
JP31170787A
Publication Date:
June 14, 1989
Filing Date:
December 09, 1987
Export Citation:
Assignee:
SUMITOMO RUBBER IND
International Classes:
G01B21/20; G01B11/24; G01B11/245; (IPC1-7): G01B11/24; G01B21/20
Domestic Patent References:
| JPS57173710A | 1982-10-26 | |||
| JP60174807B | ||||
| JP62135908B | ||||
| JP57114909B |
Attorney, Agent or Firm:
Hiroshi Sugawara
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