主軸-刀柄聯(lián)結(jié)性能有限元接觸分析
[Abstract]:Spindle-tool shank connection system is one of the weakest links in machine tools, and its connection performance is a key factor affecting the stability of cutting. Based on the contact theory and considering the normal and tangential interaction between surfaces, the performance analysis model of spindle and cutter shank connection is established. The contact separation between the cone of the tool handle and the cone of the spindle hole, the contact pressure on the cone of the tool handle and the stress distribution of the cone surface of the cutter handle are analyzed. The influence of the rotation speed on the connection performance of the spindle and the joint surface of the cutter shank is obtained. At low speed, the connection performance is stable, but at high speed, the cone of the tool handle and the cone of the spindle hole are separated obviously, the contact pressure of the tool shank drops to half of that of the rest, and the stress of the tool shank increases significantly, so it is impossible to guarantee the close contact between the two conical surfaces at this time. Spindle-tool shank connection performance loss. Finally, the validity and feasibility of the finite element contact analysis are verified by radial loading test of the spindle and cutter shank system at high rotational speed, which lays a foundation for further analysis of the connection performance of the spindle and cutter shank.
【作者單位】: 北京工業(yè)大學(xué)機械工程與應(yīng)用電子技術(shù)學(xué)院;
【基金】:國家自然科學(xué)基金(51375025)
【分類號】:TG502
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