G - Physics – 05 – B
Patent
G - Physics
05
B
342/6.1
G05B 19/12 (2006.01)
Patent
CA 1037595
MULTIPLANAR SENSOR AND CONTROL SYSTEM FOR USE IN ROLL FORMING MACHINES ABSTRACT OF THE DISCLOSURE A multiplanar sensing structure and control system therefor suitable for use in a numerically controlled roll forming machine are disclosed. The multiplanar sensing structure includes a support arrangement for mounting a multiplanar sensor in a position such that a work part exiting from contour forming rollers passes through the structure. The support arrangement is formed such that the sensor is free to move in two planes but is prevented from rotating about its longitudinal axis. The multiplanar sensor includes a cylindrical housing gimballed end plates movable in two orthogonal planes. In addition, the end plates are rotatable and include orifices corresponding to the cross section of the part being contour formed. As the work part passes through the orifices, the curvature of the part causes the end plates to change position. The change in position of the end plates is sensed by rotary variable-differential transformers (RVDTs). The output from the RVDTs are compared with signals related to the desired curvature of the part and the result of the comaprison is used to modify the signals applied to the numerically controlled contour forming machine to provide compansation for part springback.
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