4.3.1支承轴颈的加工凸轮轴支承轴颈尺寸:3-φ50(-0.025)/-0.055mm 支承轴颈同轴度:φ0.02mm 支承轴颈圆度:0.005mm 支承轴颈圆柱度:0.007mm 为了保证支承轴颈的加工精度,我们选用数控车床车削支承轴颈、数控车小端轴颈,在加工过程中采用单刀车削,中心架支承,在一台数控车床上完成粗车及精车,以减少支承轴颈的变形。支承轴颈的磨削选用普通外圆磨床和高精度外圆磨床粗、精磨支 4.3.1 Processing Bearing Shaft Machining Camshaft Bearing Shaft Size: 3-φ50 (-0.025) / - 0.055mm Supporting Shaft Concentricity: φ0.02mm Supporting Shaft Circularity: 0.005mm Supporting Journal Cylindricality: 0.007mm In order to ensure the machining accuracy of the bearing journal, we use the CNC lathe turning journal and the small end journal of the CNC lathe. In the process of machining, the single-spindle turning and the center frame support are used to complete the roughing and finishing on a CNC lathe Car, to reduce the deformation of the bearing journal. Grinding bearing journal selection of ordinary cylindrical grinder and high precision cylindrical grinder coarse, fine grinding branch