Geometrical instruments – Area integrators – Electrical
Patent
1977-10-06
1979-02-27
Aegerter, Richard E.
Geometrical instruments
Area integrators
Electrical
33148H, 33174L, G01B 728
Patent
active
041411480
ABSTRACT:
A contour measuring apparatus including a stylus for contacting an outer surface of an object to be measured, a support arm having mounted at the distal end thereof of the stylus, a slider movable in parallel with the longitudinal directon of the support arm and oscillatingly movable and pivotally supporting the support arm about a horizontal axis perpendicularly intersecting the longitudinal direction of the support arm, a feed screw shaft threadably coupled to the slider so as to move the slider in parallel with the longitudinal direction of the support arm and a differential transformer mounted between the support arm and the slider. The counter measuring device further includes a driven gear mounted at one end of the screw shaft, a first clutch connected by way of an idle gear meshing with the driven gear and a driving gear, a motor connected to the first clutch, a second clutch coaxially connected to the driven gear, a manual handle connected to the second clutch and a rotational angle detecting device for digitally detecting the rotation of the screw shaft. In a preferred embodiment, the rotational angle detecting device includes a case, a shaft rotatably supported by the casing connected to the feed screw shaft, a rotational angle detecting disk operationally associated with the shaft, sensing means for sensing the rotation of the disk and transferring means for transferring either the disk or sensing means in a direction for compensating for backlash by an amount equal to the backlash of the feed screw shaft when rotation of the feed screw shaft is started.
REFERENCES:
patent: 3319341 (1967-05-01), Graham
Aegerter Richard E.
Little Willis
Mitutoyo Mfg. Co. Ltd.
LandOfFree
Contour measuring apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Contour measuring apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Contour measuring apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-716418