盘形圆弧砂轮曲面磨削几何模型

砂轮外形、加工轨迹、运动轴组合方式、工件摆放方式等的差异都会引起曲面磨削加工模型的变化,加工几何模型是实施曲面磨削首要解决的问题。建立盘形圆弧砂轮的几何模型,通过磨削点法向量匹配,建立工件点和砂轮点的一一映射关系,经过坐标变换可以得到相应的刀具运动轨迹,用于磨削加工。形成统一的盘形砂轮曲面磨削几何模型,并给出刀具运动轨迹的计算流程。该磨削模型适用范围广,有效解决了多种曲面磨削过程的刀具轨迹生成问题,实现了高精度的曲面磨削加工。

Geometric model of curve grinding with disk arc wheel

The differences of wheel shape, machining path, motion axis combinations and the workpiece placed posture, will cause alteration of grinding model, the model is the primary problem to solve curve generating. In this paper, geometric model of disk arc wheel was established; one-to-one mapping relationship was build between workpiece and grinding wheel through the grinding point normal vector matching. After coordinate transformation, we can obtain the corresponding machining tool motion trajectory, it can be used for grinding. It forms the uniform grinding geometry model of curve surface, and calculating flow of tool path is developed.