论文部分内容阅读
运用微分几何中的切触原理,研究了在多轴数控机床中刀具切削圆与零件曲面的切触条件和局部坐标系下的局部3阶切触条件。通过引用切触阶来衡量刀具加工过程中的运动轨迹与将要被加工曲面的贴近程度,运用工件坐标系与刀具坐标系的相互转换,推导出刀具与被加工曲面的最佳切触条件。通过对车门曲面加工的验算和截形分析,证明运用5坐标加工要比运用3坐标及4坐标加工更贴切。
By using the principle of contact and tangent in differential geometry, the conditions of the contact between the cutting circle and the surface of a part in a multi-axis CNC machine tool and the local third-order contact conditions in the local coordinate system are studied. By referring to the contact order to measure the movement path of the tool during the process and the closeness to the surface to be machined, the optimal contact condition between the tool and the machined surface is deduced through the conversion between the workpiece coordinate system and the tool coordinate system. Through the calculation of door surface processing and truncation analysis, it is more appropriate to use 5-coordinate machining than to use 3-coordinate and 4-coordinate machining.