G - Physics – 05 – G
Patent
G - Physics
05
G
342/15, 338/6
G05G 13/00 (2006.01) G05G 9/047 (2006.01)
Patent
CA 1272768
Abstract JOYSTICK CONTROLLER FOR THREE AXIS CONTROL OF A POWERED ELEMENT A joystick controller (38) for three axis control of a powered element such as a probe shaft (24) of a coordinate measuring machine (10) is disclosed in which a joystick handle assembly (40) is mounted for pivoting movement along either of orthogonal horizontal X or Y axes, with a plunger (64) mounted within a hollow joystick shaft (58) for up and down movement along a vertical Z axis orthogonal to the X and Y axes. Control signal generators, such as potentiometer assemblies (84, 106, 134), are drivingly engaged with the hollow joystick shaft (58) and plunger (64), each generating control signals corresponding to each motion of the joystick handle assembly (40). These signals are used to produce corresponding controlled movement of the probe shaft (24) of the coordinate measuring machine (10) along respective X, Y and Z axes. In the first embodiment, the hollow joystick shaft (58) carries, at its lower end, a Z axis potentiometer assembly (106) which is operated by an actuator arm (112) engaged by the plunger (64). A gear rack (146) acting on rotary actuator gear (148) directly operates Z axis potentiometer assembly (106) in an alternate embodiment.
528599
Brandstetter Robert W.
Macrae & Co.
Warner & Swasey Company (the)
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