Roll machining difficulties analysis

1, the roll belongs to large parts, a single workpiece processing time is longer, the general ordinary tool to go less than the head has been worn leading to rework of the workpiece, greatly affecting the efficiency of roll processing.

2, the general roller blank material hardness is high, and the material there are sand, porosity, white hard points and other casting defects, the surface of the “sand” phenomenon is serious, resulting in frequent tool collapse edge, tool damage rate is high.
3, the turning of the roll machining allowance is large, ordinary tools are difficult to realize the large depth of cut turning, processing efficiency is low; and the roll surface distribution of pits, the knife has a violent impact on the tool, the tool strength requirements are high.

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