可调节夹具在挠性结构加工中的应用

Application of Adjustable Clamp in Flexible Structure Machining

常见挠性细颈结构一般由两侧圆弧凹槽构成。凹槽加工时,由于工件刚度较低,造成加工变形,因此常选用镗、研磨或高速铣削等低应力加工方法降低加工变形。在进行镗以及高速铣削等方法加工圆弧凹槽时,手工研磨采用不同规格的支撑元件提高已加工凹槽刚度的方法不再适用。因此,设计了一种新型可调节夹具,可根据零件厚度及已加工凹槽深度进行弹性调节,保证挠性细颈结构加工时工艺系统刚度,从而使尺寸精度达到技术指标要求。

Common flexible neck structures are generally composed of circular grooves on both sides. In the groove machining, due to the low rigidity of the workpiece, the machining deformation is caused. Therefore, low-stress machining methods such as boring, grinding or high-speed milling are often used to reduce the machining deformation. When machining circular grooves by means of boring and high-speed milling, the method of manually grinding the support elements with different specifications to increase the rigidity of the machined grooves is no longer applicable. Therefore, a new type of adjustable clamp is designed, which can be adjusted according to the thickness of the part and the depth of the groove. The rigidity of the process system during the processing of the flexible neck structure is ensured, so that the dimensional accuracy meets the technical requirements.