Abstract
The spatial 7R link constant-velocity joint is obtained when some of kinematic constants of spatial 7R 7-link mechanism are given suitably. This joint can transmit a rotational motion and a torque with constant velocity between two intersecting shafts. It was verified experimentally that the shaft angle can be vary in the region of ±60°. The shaft angle limits the arrangement of rotating shafts which are used in several industrial equipments. If the shaft angle is extended, the constant-velocity joints can be applied to the indirect driven type of articulated manipulator, for example. In this paper, it is investigated that the method of design of the spatial 7R link constant-velocity joint to actualize the constant-velocity joint which can transmit a rotational motion between two intersecting shafts at an angle of 90°. And when the shaft angle is large, there is a fear that the motion transmissibility of constant-velocity joints become worse. So the motion transmissibility is examined by measureing the input torque of the constant-velocity joint.
