Geometrical instruments – Distance measuring – Scale reading position sensor
Patent
1989-05-05
1990-08-28
Cuchlinski, Jr., William A.
Geometrical instruments
Distance measuring
Scale reading position sensor
33707, 356374, G01B 502
Patent
active
049513990
ABSTRACT:
A position measuring device for measuring the relative position of two objects (01, 02) comprising a graduation (Ta) in a graduation plane (TFa) of the graduation carrier (TTa) which is connected to one of the objects (01). The object (01) is scanned by a scanning unit (A) which is connected to the other object (02) by means of a carrier (MT). Between the carrier (MT) and the scanning unit (A), a coupling link (K), preferably in the form of a leaf spring, is aligned in the direction of measurement X. This spring has only one rotational degree of freedom in a direction perpendicular to the graduation surface (TFa) of the graduation carrier (TTa). A guide mechanism (F) comprises a guide element (FE) which guides the scanning unit (A) in a direction parallel to the direction of measurement X on a guide surface (FFa) of the graduation carrier (TTa). The guide surface (FFa) is perpendicular to the graduation surface (TFa) of the graduation carrier (TTa). The guide mechanism (F) further comprises a guide joint (FG) for connecting the scanning unit (A) with the guide element (FE). The guide joint (FG) possesses at least one translational degree of freedom perpendicular to the direction of measurement X.
REFERENCES:
patent: 4273447 (1981-06-01), Nelle
patent: 4295742 (1981-10-01), Nelle et al.
patent: 4414746 (1983-11-01), Takizawa
patent: 4492032 (1985-01-01), Nelle
patent: 4517742 (1985-05-01), Ernst
patent: 4541181 (1985-09-01), Giacomello
patent: 4564294 (1986-01-01), Ernst
patent: 4603480 (1986-08-01), Sakagami
Cuchlinski Jr. William A.
Dr. Johannes Heidenhain GmbH
Scanlon Patrick R.
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