Cutoff
This is always the last lathe machining operation. It frees the part from the stock material.
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Figure 8.35: Cutoff
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Rules for Cutoff
- Cutoff operations are much like grooving operations.
- As shown in the detail view above, cutoff usually begins with a cut that forms a radius or chamfer on the back side of the part. The tool then retracts, moves back, and then plunges to cut away the part.
- Consider using a parts catcher to keep the part from falling into the bottom of the machine and being scratched by the cut chips.