Process Simplification of Multi-Stage Forging for the Outer Race of a CV Joint

作者：Ku Tae Wan; Kim Lee Ho; Kang Beom Soo^*

来源：Materials and Manufacturing Processes, 2014, 29(2): 85-92.

DOI：10.1080/10426914.2013.792432

• Modification
• Groove
• Design
• Simplification
• Knife
• Forging
• Simulations
• Tooling
• Numerical
• Split
• Geometry

Constant velocity (CV) joint with six inner ball grooves has been conventionally produced by a multi-stage warm forging process that includes forward extrusion, upsetting, backward extrusions, necking, ironing, and sizing. In this study, multi-stage cold forging is presented with four simplified stages of forward extrusion, modified upsetting, backward extrusion, and combined necking-ironing-sizing. A three-dimensional numerical simulation is performed to ensure the appropriateness of the proposed process, and experimental investigations are carried out using spheroidized and phosphophyllite-coated SCr420H billet material. It is shown that the proposed multi-stage cold forging process could be successfully applied to the production of the outer race.

• 出版日期2014-2-1