薄板纵向刨切机斜刃切削及上机架几个力学问题的研究

A RESEARCH ON THE SHEET PORTRAIT CHIPPING MACHINE OBLIQUE BLADE CUTTING AND SEVERAL MECHANICAL PROBLEMS OF TOP RACK

通过对薄板纵向刨切机斜刃刨削工作原理、切削力、上机架环形橡胶带、丝杠与螺母产生的拉力、立柱与套筒上的摩擦力与正压力的研究与计算，首次发现了斜刃切削省力３．７５倍的根本原因是刨刀后刀面坡度因子的影响，切削时，切削力是沿着刨刀后刀面的斜面进行斜向切削，即在斜面上进行斜向切削。与此同时，还发现斜刃刨刀纵向进给平轨斜载面上的正压力比进给力大１２倍的计算方法：找到了利用上机架“楔入”立柱的理论，导出了上机架套筒受力平衡方程式，利用环形橡胶带欧拉方程式的力学分析，导出了张紧力的大小以及丝杠拉力计算式。为薄板纵向刨切机的设计提供了科学的理论依据，对设计薄板纵向刨切机床具有现实的指导意义。

For the first time, the fact that the fundamental reason of oblique blade cutting save labour 3.75 times is the infection of grade factorial of the back of planing cutter is found out by the research and calculation of the work principle of oblique blade cutting、 cutting strength、annulus rubber cincture of top tack、the pulling force between thread stick and nut、the friction between post and sleeve and positive pressure of sheet portrait chipping machine. As cutting sheet cutting strength goes along oblique cutting along with the bevel of the back of Planing Cutter, namely cutting strength goes along oblique cutting on the bevel。 At the same time the method of calculation that the positive pressure is bigger 12 times than the entering strength of the portrait entering plane track bevel of oblique blade planing cutting; In this paper, balance equation of top rack's sleeve is found out by using the theory of top rack wedge the mail column, the size of tension and the calculation formula of the pulling force of thread stick is found out by using mechanical analysis of annulus cincture Euler's equation. The scientific theoretical basis is provided for designing of sheet portrait chipping machine。 It has an important realistically directive function for designing of sheet portrait chipping machine.