Three=dimensional sensor for template following machine tool - oscillates on universal mounting and has Hall generators in two=dimensions

摘要

The sensor incorporates "Hall effect" generators to monitor displacements in three orthogonal dimensions. The "Hall" generators (8, 12) are sensitive to displacements in two perpendicular dimensions with the sensor (2) mounted by universal joint about a centre of oscillation (4). A ball-coupling (18) transforms vertical movements of the sensor-head into the oscillator motions of a sensor-finger (3). An assembly comprising the body of the sensor, a separating ring (15), and a second sleeve (16) is mounted slideably in a primary sleeve (5). The generators are mounted opposite magnets (7, 11), and the magnets are mounted on a disc (6) which is built onto the prim. sleeve.