Aspheric optical components is a very important optical components,commonly used parabolic mirror,hyperbolic mirror,and so on.Aspheric optical parts can be obtained spherical optical components unmatched image quality is good,in the optical system can be a good variety of aberration correction to improve image quality,improve the ability to identify the system,it can be one or several non-spherical parts to replace multiple spherical parts,so as to simplify the instrument structure,reduce costs,and effectively reduce the weight of the instrument,so now we have for high quality precision aspheric increasing demand.
Currently,non-spherical surface facing parts of the manufacturing process costs are high,the problem of low processing efficiency,especially in parts of the wedge aspherical aspheric,because the bottom surface is not horizontal,so the surface of the workpiece with the grinding wheel face in the process the problem of difficult processing,and therefore need a way to change the relative position of the workpiece fixture - to wedge axis aspheric rotary grinding jig when the workpiece to be processed in a relatively horizontal position,thereby reducing workpieces difficult.
The main work includes:According wedge aspheric processing needs,design a combination of rod rotation fixture,cam rotary fixture structure of the program.Discussed the advantages and disadvantages of the two programs,research fixture clamping mechanism; focused analysis of flat clamp tight bodies and wedge-type clamping mechanism,through the introduction of these two programs and compare that leads out of the final plan .In order to understand the performance parameters of the final solution,the fixture of the servo motor,gear and bearing made a selection; axis of the upper platform and the lower platform,the shaft diameter of the estimate made,calculated on the platform axis and the platform axis,the rotation axis moment of inertia,stiffness,shear stress and strength,while computing the bearing deformation and rigidity.