立式加工中心主轴箱结构设计

Spindle unit design of Vertical machining centerABSTRACTMachining center evolved from the need to be able to perform avariety of operations and machining sequences on a workpiece on asingle machine in one setup.Machining center requires little operatorintervention,and once the machine has been set up,it will machinewithout stopping until the end of the program is reached.Some of theother advantages that machining centers give a manufacturing shop aregreater machine uptime,increased productivity,maximum part accuracy,reduced scrap,less inspection time,lower tooling costs,less inventoryand so on.Because of their many advantages,machining centers becomewidely accepted by manufacturing enterprises in the world.Machining centers are equipped with spindle units,rotaryworkbench,moving workbench,tool magazines and automatic toolchangers,and other mechanical function components.Spindle unit is theimportant motion part of the metal cutting machine tool.Its movementbehavior affects the machining accuracy and surface roughness of part tobe machined.Through referring to a variety of technical literatures,thecharacteristics of some kinds of spindle units are compared with eachother based on analysis and research work on different machining