Sensor leg assembly for a contour follower

Details Sensor leg assembly for a contour follower Sensor leg assembly for a contour follower

2007-04-05

2009-08-25

Noland, Thomas P (Department: 2856)

Measuring and testing

Probe or probe mounting

C033S559000

Reexamination Certificate

active

07578210

ABSTRACT:
A contour follower includes a plurality of sensors spaced around a waterjet nozzle, each of the sensors being configured to measure a distance between a working surface and a first plane, perpendicular to a longitudinal axis of the nozzle. The sensors may include hall-effect sensors lying in the first plane and magnets lying in a second plane, parallel to the working surface. A detecting circuit processes signals from the sensors to determine an angle of the working surface, relative to the first plane, and a distance between an aperture of the nozzle and the working surface. A collision detection sensor provides a signal in the event the device approaches to within a selected distance of an obstruction in the plane of the working surface. A shield plate blocks and dampens secondary spray-back of cutting fluid occurring at low angles above the working surface.

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