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在双轴柔性滚弯技术原理的基础上,针对小直径开缝衬套的制备,对现有机床夹具进行改进设计,以简化制备的操作步骤,提高制备效率。提出总体改进方案,详细说明双轴承辅助支撑部位、转动臂、对准块的设计和弹簧的选用。基于Adams软件对改进夹具进行动力学仿真,通过刚性轴质心Y方向坐标变动曲线、刚性轴与转动臂接触段质心Y方向变动曲线,验证了夹具夹持的稳定性和取件操作的可行性。
On the basis of the principle of biaxial flexible roll bending, aiming at the preparation of small diameter slotted bushing, the existing fixture of the machine tool is improved to simplify the operation steps of the preparation and improve the preparation efficiency. Proposed the overall improvement program, detailing the supporting parts of the double bearing, rotating arm, alignment block design and spring selection. Based on the Adams software, the dynamic simulation of the improved fixture was carried out. The variation of the Y-coordinate of the rigid-axis center of mass and the center of mass of the rotating arm in the Y-direction was verified. The stability of the fixture and the feasibility of the pick-up operation were verified.