Abstract
The torque compensating cam (TCC) mechanism which minimizes the fluctuation of input shaft torque is an effective means for reducing vibration and recognized as a valid technique for achieving faster operating speeds. In industry, a spring-type TCC mechanism is advantageous and suitable for a wide range of appli-cations due to its compactness and cost-saving feature. The parameters for the design of the spring-type TCC include positioning time, output shaft rotating angle, inertia moment of rotary table, cam curve and (a) spring constant, (b) cam stroke, (c) initial compression force. We concern ourselves how to determine unknown factors (a) to (c). TCC will invariably be custom-made. The spring, however, is supplied from venders in reality. This introduces the chore of selecting a commercially available spring that satisfies the requirements of the TCC, or of identifying the optimum spring specifications. This paper identifies the requirements of a spring suitable for the TCC, and the procedures for selecting an optimum spring.
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