关键词: 材料合成与加工工艺, 中空装配式凸轮轴, 滚花连接, 压装力, 连接强度, 数值模拟

Abstract: The advantage of the hollow assembled camshaft and the mechanism of its knurling connection were presented. The factors affecting the press fit load and the connection strength were numerically simulated. The press fit experiments on the knurling connection were performed. The test results show that the materials of the cam lobe and the tube shaft, the fit interference, the length of the knurling connection, the knurling form and its tooth spacing affect the press fit load and the connection strength significantly. The optimal matching of the materials of the cam lobe and the tube shaft, the proper choice of the knurling form, and the augment of the fit interference and the knurling length will enhance the knurling connection strength.

Key words: materials synthesis and processing technology, hollow assembled camshaft, knurling connection, press fit load, connection strength, numerical simulation