Car Wheel NC Vertical Lathespecial Fixture Design

The key problem of this paper originates from the Limited by Share Ltd, CITIC Dicastal production no.1 line:CNC vertical lathe fixture accuracy stability is poor, rough gate and fixture maintenancecycle is short, interference, spare parts, spare parts to replace the loss of the fixture to confirm accuracy,long time fixture maintenance with long cycle is too short,difficult to machine abnormal crash recovery. In view of the above problems, the main research contents of this paper are as follows:First of all, through the deep analysis of the actual production of the original fixture problems, combined with the structure of the fixture design, find out the main problem of the originai fixture designing,namely,radial positioning precision and fixture and blank gateinterference.Secondly, aiming at the problems radial location of fixture design, this paper carries on the optimization design of mechanical optimization design from the fixture of the original radialpositioning fixture. By contrast, abandoned the original clamp connecting rod drive mechanism, the drive mechanism of the wedge model, according to the model, design a set of driving component, and the derived radial positioning structure model with three-dimensional drawing software. And for the chuck and different sizes of different types ofwheels, some of the positioning assembly fixture for the flexible design of a certain.Then, through the ANSYSWorkbench software, it has the static analysis and modal analysis of the new fixture. verify the rationality and safety of the designing, the maximum stress,displacement and the weakest find new fixture structure, and optimize the structure.In addition to, aiming at the problems of fixture and blank gate interference, improve the blank to gateprocess, based on the existing drilling machine, a new design to gate step drill, and meets all current product line to the gate needs.Finally, this paper collects the actual use of the scene data which the new fixture into use, and compared with the original use of the data of the new fixture, the fixture of the new lower cost,maintenance time is shorter, can significantly improve the rate of finished products ofaluminum wheel hub, and can fully meet the production automation, Overall in good condition..