4 Functions of Tool Rake Angle
4 Functions of Tool Rake Angle
What is the action of tool rake angle?
1. Affect deformation extent of machining area:
Increase front angle, could sharpen tool blade, reduce plastic distortion, friction, cutting force, temperature and power, so could extend spiral bit life, inhibit the production of built up edges and scales, improve work hardening and finished surface quality.
2. Influence strength, force property and radiating conditions of straight router bit and ball nose mill:
Too big tool rake angle can create beading stress in cutting blade.
Thus, it will reduce intensity and durability of downcut end mill, heat volume, resulting in edge collapse easily.
3. Impact chip form and performance:
Diminish procerite could improve intension of pcb milling cutters, heat dissipation, and chip deformation, which is easy to cut.
However, it may lower lifetime of cutting tool bit if procerite is too small.
4. Have effect on machined surface quality:
Remarkably, procerite size is relative to oscillation phenomenon during processing.
Amplitudes will increase rapidly while reducing rake or adopting negative value.
Tool rake angle should have a reasonable parameter value according to manufacturing requirements, both positive and negative effects.
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