A lever swing auxiliary device for machining the inner wall of thin shell
                                                                     XUE Lan1,2, YANG Shuai1,2
(1.Jiangsu Engineering Technical R&D Center for Equipment Manufacturing of Electronic Products, Huaian 223003, China;2.Department of Automation, Huaian College of Information and Technology, Huaian 223003, China)

Abstract: Aiming at the problem that thinwalled shell parts with high quality could not be processed by general lathe, by modifying the tool holder to make the tool body move at low speed, a lever swing auxiliary device which could process the inner wall of thinwalled shell was designed. A screw retract mechanism, a cutter body slewing mechanism and a finetuning components were designed, the principle of twoforce bar was used to improve the machining ability and adaptive ability of lever swing auxiliary device. It was checked and analyzed that the deformation of the tool body of lever swinging auxiliary device under cutting force could not have a major impact on the processing quality of the shell by computer aided design software Pro/E, and there was no interference between the parts of lever swinging auxiliary device and the shell. The results indicate that the limitation of the general lathe in the field of thinwalled shell processing is improved, the utilization rate of the lathe is increased.

Key words: lever swinging auxiliary device; screw retract mechanism; cutter body slewing mechanism; principle of two power rods; thinwall machining