平底铣刀加工凸轮廓平底型腔的等切宽刀具轨迹生成方法

Equivalent-cut-width cutter path generation method for machining convex profile flat-bottom cavity by flat-bottom milling cutter

Abstract

The invention discloses an equivalent-cut-width cutter path generation method for machining a convex profile flat-bottom cavity by a flat-bottom milling cutter and belongs to the technical field of material machining. According to the method, the center of a maximum internally tangent circle of a peripheral convex profile of the flat-bottom cavity is used as a first cutting point of the cutter, a helix is made with the center used as an origin of a polar coordinate system and can intersect with the convex profile to be divided into multiple sections, a cutter path is generated with the convex profile and the helix sections inside the convex profile used as limitations, and non-cutting stroke sections in the generated path are optimized. The method has the advantages as follows: the cutting efficiency can be controlled effectively by the aid of the cut width, and the controllability is enhanced in the machining process; the cut width is effectively controlled, and the output power of a machine tool is basically kept stable; and the cutter of the machine tool can be effectively protected.
本发明公开了一种平底铣刀加工凸轮廓平底型腔的等切宽刀具轨迹生成方法,属于材料加工技术领域。所述方法以平底型腔的外围凸轮廓的最大内切圆的圆心为刀具的第一个下刀点,以所述的圆心为极坐标系的原点,做螺旋线,螺旋线会与凸轮廓相交被断成很多段,以凸轮廓和在凸轮廓内部的螺旋线段为限制,生成刀具轨迹,并对生成的轨迹中的空行程段进行优化。本发明的优点在于可以有效的通过切宽控制切削效率,加工过程的可控性增强;切宽得到有效控制,机床输出功率基本保持稳定;可以有效地保护机床刀具。

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