Proposal of high-stiffness clamping-mechanism applicable to high-speed rotation for solid toolshank

Abstract

In this paper, the novel clamping mechanism for double-face contact tooling-systems with a solid toolshank is proposed for applying to high-speed spindles. Furthermore, the clamping characteristics of the proposed mechanism are evaluated with experiments and finite element analyses. From the results, the followings are clarified; To load drawing force at the center of the clamping wedge makes clamping action reliable. Since this also provides the balance against to centrifugal force, the magnified clamping force can be obtained up to rotational speed of 60,000min-1. In addition, the proposed clamping mechanism is applicable to double-face contact toolshanks.