In the production process, it is often encountered that some workpiece surface roughness values ​​are relatively low (Ra = 0.8 μm or less). However, due to the complicated shape and the inability to grind the grinding machine, it can only be polished by hand. First, the efficiency is low. Second, due to the limitation of speed, the surface roughness is not up to the requirement. We have solved these production problems through continuous exploration and experimentation and the clever use of gas sand turbines. We made a simple polishing machine by slightly modifying the grinding head of the gas grinder, which can roughen and polish the workpiece with large grinding amount and low roughness value.
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