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普通外圆磨床、曲轴磨床砂轮架的快速引进目前仍普遍采用液压油缸结构,并以液压油驱动实现进退,其定位形式有以下两种:一种是通过丝杆前端的球面撞头与紧固于垫板上的螺钉相撞实现定位,另一种是通过紧固于液压油缸后部活塞杆上的垫圈与油缸后盖相撞实现定位。这两种定位方式的优点为结构简单,并由于在横进给系统中采用了丝杆、半螺母传动和以闸缸消除间隙,给砂轮架的吊装带来方便;缺点为定位处的接触刚性较差,而且由于力的传递环节较多,影响定位精度。新近颁布有关磨
Ordinary cylindrical grinder, crankshaft grinder wheel frame is still commonly used in the rapid introduction of hydraulic cylinder structure, and the hydraulic oil to achieve advance and retreat, the positioning of the following two forms: one is through the front end of the screw ball head and fastening In the plate on the collision of screws to achieve positioning, and the other is by fastening the rear of the hydraulic cylinder piston rod on the rear cover collision with the cylinder to achieve positioning. The advantages of these two positioning methods for the simple structure, and because of the infeed system using a screw, half-nut drive and the brake cylinder clearance to bring convenience to the wheel frame lifting; Disadvantage of the contact stiffness at the location Poor, but also because of the transmission of more links, affecting the positioning accuracy. Recently promulgated the mill