CAJ | 학술논문

高速加工中夹头/刀具的联结性能对加工精度和机床可靠性具有重要影响。液压膨胀式夹头是一种采用静压膨胀原理夹持刀具的超高精密夹头，它具有优良技术性能。采用机械零件可靠性设计的方法，建立了液压膨胀夹头/刀具联结的可靠性模型，并确定广义应力和广义强度的分布，比较了蒙特卡洛法和积分法求解的液压膨胀夹头的可靠度。分析得出转速、间隙量、油压、凸起长度、凸起高度对液压膨胀夹头可靠性的影响，研究结果为夹头的设计、制造与使用提供有效的依据和参考。
고속가공중협두/도구적련결성능대가공정도화궤상가고성구유중요영향。액압팽창식협두시일충채용정압팽창원리협지도구적초고정밀협두，타구유우량기술성능。채용궤계령건가고성설계적방법，건립료액압팽창협두/도구련결적가고성모형，병학정엄의응력화엄의강도적분포，비교료몽특잡락법화적분법구해적액압팽창협두적가고도。분석득출전속、간극량、유압、철기장도、철기고도대액압팽창협두가고성적영향，연구결과위협두적설계、제조여사용제공유효적의거화삼고。
The connection performances of toolholder/tool interface has important influence on machining accuracy and reliability of machine tool. Hydraulic Expansion Toolholder is ultra-precision tool clamping toolholder which adopts static expansion and has excellent technical performance. Based on the theory of me-chanical reliability design, the reliability model of Hydraulic Expansion Toolholder/tool is established, and the distribution of generalized stress and generalized strength is determined. Compared to Monte Carlo meth-od and Integration method, reliability of Hydraulic Expansion Toolholder is worked out. The effect of differ-ent rotational speed,gap,oil pressure, length of the bulge,height of the bulge on the reliability of Hydraulic Expansion Toolholder is discussed in detail. The results can provide effective basis and reference for design manufacturing and using of the toolholder.