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弯管加工和其它机械加工一样,管件在弯曲前也要定位、夹紧,而后通过一对滚轮的相对滚动使管件成形。其中管子的夹紧机构是保证弯管质量、提高弯管效率、降低劳动强度的重要因素。根据我厂多年来对拖拉机、推土机、汽车等各种规格液压油管的制作,总结了几种夹紧机构,在手动、气动或液压弯管上都通用。一、夹紧机构设计要点 (1)各种夹紧机构在夹紧过程中不损坏管子的几何形状。为此在设计夹紧钳口缝隙时不宜过大,一般取b=1～2mm为宜(见图1)。对薄壁管件更应注意.
Elbow processing Like other machining, the pipe is also positioned, clamped before bending, and the pipe is then shaped by the relative rolling of a pair of rollers. Among them, the clamping mechanism of the pipe is an important factor to ensure the quality of the bent pipe, improve the bending efficiency and reduce the labor intensity. According to our factory for many years on tractors, bulldozers, automobiles and other specifications of the production of hydraulic tubing, summed up several clamping mechanism, manual, pneumatic or hydraulic pipe are common. First, the clamping mechanism design points (1) a variety of clamping mechanism in the clamping process does not damage the pipe geometry. To do this in the design of clamping jaw gap should not be too large, generally take b = 1 ~ 2mm appropriate (see Figure 1). Thin-walled tube should pay more attention.