Graduation project for the XZ229 ro

Graduation project for the XZ229 round table milling machine machine headstock design, round table milling machine is a large efficient general milling machine, mainly used to process all kinds of large workpiece on the plane, groove, etc. What I design is the round head milling machine headstock, mainly including the transmission parts, spindle components, control mechanism, lubricating sealing system and the box and its joint parts design and layout. Design and calculate the main transmission gear parameters, and prepare the processing technology, draw the headstock assembly diagram. Headstock is an important part of the milling machine, in addition to the design of the general mechanical transmission requirements, to focus on the technical requirements: precision requirements, stiffness and seismic resistance requirements, transmission efficiency requirements, spindle front bearing temperature and temperature rise control, structural process requirements. These requirements should follow the principle of easy operation, safety and reliability, and follow the standards of standardization and generalization. Headstock structure design is the focus of the entire milling machine design, before the design should determine the draft, the purpose is: (1) layout of the transmission parts and choose the structure; (2) check whether the transmission design interference, collision and other unreasonable conditions, in order to correct in time; Determine the support span of the drive shaft, the position of the gear on the shaft and the relative position of each shaft, in order to determine the bearing point and bearing direction of each shaft. It provides basis for checking calculation of shaft and bearing