Abstract
Based on the 3-PRS parallel mechanism, a new drill point grinder is presented in this paper. The relationship between the drill point geometry parameters and the grinding kinematic parameters are described for the most commonly used conical twist drill, and the grinding kinematic equation is also derived accordingly. The virtual prototype modeling and the kinematic simulation using MSC/ADAMS are then carried out for the proposed parallel drill point grinder. The related kinematic analysis, such as the displacement and velocity analysis of the drill point and grinding wheel, the rotation angle analysis of the ball joints with respect to the initial position, etc., is obtained. From the simulation results, we can see that the proposed structure is capable of implementing the function of drill point grinding. The virtual prototype simulation can help in the parametric design and the structural design for the new grinder.
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