关键词: 内花键；八功能测试；夹具设计；等速传动轴

Abstract: The paper introduces the working principle of the eight function test of the equal speed drive shaft, and improves the fixture for a certain internal spline equal speed drive shaft when doing the eight function test, such as easy damage to the outer circle of the mobile knuckle fork and poor clamping, focusing on the design principle, clamping specific, connecting flange, quick disassembly and other aspects of the design of the new fixture to better solve the problems that occur in the clamping of the internal spline equal speed drive shaft, and finally achieves the purpose to improve the testing accuracy and efficiency as well as to obtain higher economic benefits.

Key words: Internal spline; Eight function test; Fixture design; CVJ-side driveshaft