| Summary: | 碩士 === 國立臺灣科技大學 === 機械工程系 === 106 === Abstract
The purpose of this research is to study the surface finishing processes on the CNC turning center for STAVAX, to improve its surface roughness. The process parameters adopted the best ball burnishing parameters and ball polishing processing parameters obtained in the previous study. This study investigated the influence of five types of homemade polishing balls on the surface roughness. The best process parameters have been applied to the produced parts on the turning center.
The process parameters based on experimental results of the hexahedron as the test piece, the Type E (particle size 3 μm, concentration 40%) polishing ball has the highest surface roughness improvement value; and the best ball polishing sequence and the pass combination are: Type E(particle size 3 μm, concentration 40%) - Type C(particle size 1μm, concentration 30%) - Type B(particle size 0.3 μm, concentration 20%) - Type A(particle size 0.05 μm, concentration 20%), which improves surface roughness from Ra 0.22 μm to Ra 0.023 μm.
By applying these suitable parameters to the cam-shaped and keyway workpiece, the surface roughness form Ra 0.21 μm to Ra 0.023 μm and Ra 0.206 μm to Ra 0.02 μm could be obtained.
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