公开(公告)号：EP3702078A1

公开(公告)日：2020-09-02

申请号：EP19196072.3

申请日：2019-09-06

申请人： Citic Dicastal Co., Ltd.

发明人： An, Gang ,  Yan, Xinhe ,  Wang, Haitang

IPC分类号： B23C3/02 ,  B23C5/10 ,  B23C5/12 ,  B62D7/18

摘要： The present disclosure relates to the field of machining, and provides a combined tool for machining a rear steering knuckle center hole and a machining method thereof. The combined tool for machining a rear steering knuckle center hole includes: a tool body, wherein the tool body includes a shank (1), a tool bar (2) and a step-like tool bit (3); the step-like tool bit (3) is provided with at least two tool teeth (32) uniformly disposed in a circumferential direction; the at least two tool teeth (32) extend along an axial direction of the combined tool for machining a rear steering knuckle center hole, and a chip discharge groove (31) is concavely arranged between any two adjacent tool teeth (31); and a blade assembly (41-44, 45-48), wherein the blade assembly (41-44, 45-48) includes various blades (41-44, 45-48); the blade assembly includes at least two groups of blades corresponding to the at least two tool teeth (31); each group of blades is mounted on a mounting plane (311) of the corresponding tool tooth (31) along the axial direction; and projections of all the blades (41-48) in the axial direction are continuous and cover a machining range of the rear steering knuckle center hole.