Pivotable two-coordinate scanning head with horizontal main axis

Details Pivotable two-coordinate scanning head with horizontal main axis Pivotable two-coordinate scanning head with horizontal main axis

1996-01-17

1998-03-17

Will, Thomas B.

Geometrical instruments

Gauge

Tooth testing

3350114, 33559, 33561, 73162, G01B 5016

Patent

active

057273260

ABSTRACT:
The scanning head according to the invention has the horizontal main axis (1) and is provided for numerically controlled gear measuring devices. Its feeler (2) is guided by a linear slide (4) and the latter is guided by a leaf spring parallelogram (11, 12, 13, 14) in the two coordinate directions (6) and (16). Mechanical devices (8) and (18) hold the feeler in a definite central position from which it can be deflected with the same measuring force in both the positive and negative coordinate directions. A centrally located two-dimensional ruled grating scale (10) detects all deflections of the feeler in the plane spanned by the two coordinates. To adjust the third coordinate direction, a pivot mechanism (3) is used, with a roller bearing (2) being provided for weight balance for the leaf spring parallelogram, the outer ring of the bearing being suspended by at least two springs (21, 22) on a fixed part (23) above the scanning head.

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patent: 5005297 (1991-04-01), Aehnelt et al.
patent: 5029398 (1991-07-01), Ertl

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