Ma Xiaosan, Jiao Feng, Bie Wenbo, Niu Ying, Chu Shuaizhen, Hu Zhanzhan, Yang Xiaohong
School of Mechanical and Power Engineering, Henan Polytechnic University, Jiaozuo 454000, China.
College of Mechanical and Electronic Engineering, Huanghe Jiaotong University, Jiaozuo 454950, China.
Micromachines (Basel). 2023 Jan 15;14(1):222. doi: 10.3390/mi14010222.
During the process of internal cylindrical ultrasonic-assisted electrochemical grinding (ICUAECG), both the workpiece and the conductive grinding wheel are rotating, the machining space is closed and narrow, the electrolyte is difficult to spray into the machining area, and the insulation between the workpiece and the machine bed is challenging. According to the machining characteristics of ICUAECG, the structure of a special machine tool was designed to mitigate these problems. In particular, the rotation, electrolyte supply, electric connection, and insulation modes of the workpiece clamping parts were studied, yielding a novel workpiece clamping- and rotating-device design. This structure can fully use the internal space of the hollow spindle of the machine tool, effectively reduce the external moving parts, and achieve the appropriate liquid injection angle of the electrolyte. The ultrasonic vibration system and its installation mechanism, the dressing device of the conductive grinding wheel, and the electric grinding spindle-mounting and -fixing device were analyzed in detail. Then, a special machine tool for ICUAECG was designed, the operability and feasibility of which were verified by experiments involving conductive grinding wheel dressing and ICUAECG.
在圆柱内表面超声辅助电化学磨削（ICUAECG）过程中，工件和导电砂轮均在旋转，加工空间封闭且狭窄，电解液难以喷入加工区域，并且工件与机床床身之间的绝缘也具有挑战性。根据ICUAECG的加工特点，设计了一种专用机床的结构来缓解这些问题。特别地，研究了工件夹紧部件的旋转、电解液供应、电气连接和绝缘方式，得出了一种新颖的工件夹紧和旋转装置设计。这种结构可以充分利用机床空心主轴的内部空间，有效减少外部运动部件，并实现电解液合适的注入角度。详细分析了超声振动系统及其安装机构、导电砂轮修整装置以及电动磨头安装和固定装置。然后，设计了一台用于ICUAECG的专用机床，并通过涉及导电砂轮修整和ICUAECG的实验验证了其可操作性和可行性。
