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一般孔加工刀具所用导套的参量,按夹具设计中推荐的规范选取。如钻套高度H=(1.5～2)d,或H=(2.5～3.5)d,钻套与工件距离h=(0.3～0.7)d或h=(0.7～1.5)d,或按厂标规范选取。对于刀具导向部位与导套的配合间隙,无法确定其磨损极限,判定其有无继续使用的可能性,及分析孔加工工艺的合理性等。本文对孔加工刀具用导套的有关参量进行深讨。一、孔加工刀具用导套参量的函数表达式孔加工刀具在导套中由于存在间隙,刀具轴线因而产生偏移,或与导套母线接触或在导套中歪斜。实际上刀具在导套中歪斜情况概率最大。如附图示,H为导套有效长度,h为导套与工件距离,L为工件厚度,D为导套与刀具导向部位接触
General hole machining tool used in the guide sleeve parameters, according to the recommended fixture design selected. For example, if the height of drilling bushing is H = (1.5-2) d or H = (2.5-3.5) d, the distance between drill bushing and workpiece should be h = (0.3-0.7) d or h = (0.7-1.5) d, Specification selection. For the tool guide parts and guide sleeve with the gap, can not determine the wear limit, to determine whether the continued use of the possibility, and analysis of the hole processing technology and so on. In this paper, we discuss the relevant parameters of guide bush for hole machining tool. First, the hole machining tool guide sleeve with the expression of the parameter expression Hole machining tool in the guide sleeve due to the existence of gaps, resulting in offset tool axis, or with the busbar guide bush or skew in the guide sleeve. In fact, the maximum skew probability of the tool in the guide sleeve. As shown in the attached drawings, H is the effective length of the guide sleeve, h is the distance between the guide sleeve and the work piece, L is the thickness of the work piece, D is the contact between the guide sleeve and the guide part of the tool