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Precision machining methods and processes

Feb 07, 2018

Finishing In the process of operation can be a few seconds the surface roughness of the workpiece can be very well improved, and can effectively remove the vibration generated vibration marks, ripples, spirals and other defects and easy to wear Of the convex peak and the metamorphic layer, so as to greatly improve the service life of the workpiece.

The common abrasive stone size W0.5 ~ W28, the finer the particle size, the more polished the surface, the common cutting fluid is kerosene and oil, and the rigorous filtration.

Finishing operation method

Finishing In the process of operation requires adequate cooling and lubrication conditions, mounted on the vibrating head fine grained whetstone to pressure contact with the workpiece, and amplitude and frequency of longitudinal vibration, the workpiece for rotational speed rotation. The abrasive grain on the whetstone has a sinusoidal curve relative to the surface of the workpiece, which helps the abrasive grain maintain a sharp cutting edge and effectively eliminates the shape error of the workpiece surface.

Finishing process

1. At the beginning of finishing, whetstone abrades the intense cutting phase of rough crest.

2 workpiece rough layer is removed after the normal cutting stage.

3 abrasive blunt, its role is to transition from cutting to friction polishing of the weak cutting stage.

4. Whetstone and the workpiece has been very smooth, the contact area greatly increased, so the pressure drop, the abrasive can not be worn film contact with the workpiece, then stop the cutting stage.