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The cutting-out technique involves machining of the workpieces on their end faces and is used for specific jobs. The turning tool is moved in axial direction. The right-hand end-cut turning tool, specially ground, is mostly used (see Fig. 4 - relief-grinding of the secondary cutting edge to avoid "dragging" of the tool).
Figure 15 Working direction when
cutting-out
1 three-jaw chuck,
2 soft chuck jaws,
3 workpiece,
4 end-cut turning tool,
5 turning tool holder
- The workpiece is chucked in a chuck.- The workpiece is held in internally turned chuck jaws.
- Stop and block gauge are used to avoid cutting-through and, consequently, tool breakage.
- Cutting-out is completed 0.1 - 0.2 mm before breaking-through and after unloading the cut-out part is knocked out by hammer blows to avoid tool breakage and prevent accidents.
Figure 16 Completion of cutting-out
before breaking-through
1 workpiece,
2 cutting-out depth 0.1 - 0.2 mm before breaking through,
3 end-cut turning tool
- Cutting-out of very long workplaces can be done from two ends to add up to the stability of the turning tool.
Which measuring and testing tools are used for
cutting-out?
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