NJ330F自卸汽车液压倾斜缸总成,其中有两只薄壁油缸,技术要求较高(见图1a、b)。最初,我们在C630车床上加工,经三次试验,油缸均达不到技术要求。后来采用端面夹紧、立式镗孔、一次装夹、精镗后使用多珠刚性滚压头滚压的加工方案,经过反复实践,终于找到了比较理想的工艺参数,制造出合格的产品。一、薄壁油缸的夹紧和夹紧力 1.夹紧我们采用端面夹紧、缸筒径向自由的方式。因为当滚压头预调过盈量后,滚珠压入缸筒内壁,缸筒在滚压力作用下产生变形。以前,我们采用刚度较大的夹具与缸筒外圆密配,限制缸筒,不让它变形,结果使缸 NJ330F dump truck hydraulic tilt cylinder assembly, which has two thin-walled cylinder, high technical requirements (see Figure 1a, b). Initially, we are processing in the C630 lathe, after three tests, the fuel tank failed to meet the technical requirements. Later, the use of end clamping, vertical boring, a clamping, finishing after the use of multi-bead rigid rolling head rolling processing program, after repeated practice, and finally found the ideal process parameters to create a qualified product. First, the thin-walled cylinder clamping and clamping force 1. Clamping We use face clamping, cylinder radial free way. Because when the head pressure head preset interference, the ball into the cylinder wall, the cylinder under the action of rolling deformation. In the past, we used a rigid clamp with a cylindrical outer cylinder, limiting the cylinder to prevent it from deforming. As a result, the cylinder