Steering column machining method capable of preventing tail top damage in rotary swaging process

• Main Authors: FANG FEISONG, JIANG ZUZHEN, LI JUN, ZHANG CHUNLING, LI GUANGBING, YANG WEI, PENG QIANCHENG, XIAO YONG, YANG KE
• Format: Patent
• Language: Chinese; English
• Published: 13.05.2022
• Subjects: COMBINED OPERATIONS; FORGE FURNACES; FORGING; HAMMERING; MACHINE TOOLS; MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES,RIVETS, BOLTS OR WHEELS; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METAL-WORKING NOT OTHERWISE PROVIDED FOR; OTHER WORKING OF METAL; PERFORMING OPERATIONS; PRESSING METAL; PUNCHING METAL; RIVETING; TRANSPORTING; UNIVERSAL MACHINE TOOLS

The invention discloses a steering column machining method capable of preventing tail top damage in the rotary swaging process. The steering column machining method comprises the following steps that S1, blanking is conducted; s2, performing rotary swaging pretreatment; s3, rotary forging is conducted, specifically, the right end of the workpiece is forged into a taper section with the outer diameter gradually increasing rightwards during closing-in; s4, rough machining; s5, finish machining; s6, spline forming; and S7, thread forming. The taper section with the outer diameter gradually increased is additionally arranged at the right end, so that leftward horizontal force generated by the steering column in the rotary forging process can be balanced, and extrusion deformation of the spline tail and the positioning device in the rotary forging process of the steering column is prevented. 本发明公开了一种防止旋锻过程中尾部顶伤的转向管柱的加工方法，包括如下步骤，S1，下料；S2，旋锻前处理；S3，旋锻，在收口时工件的右端部被锻为外径向右逐渐增大的锥度段；S4，粗加工；S5，精加工；S6，花键成型；S7，螺纹成型。在右端部增加一段外径