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QUESTION:What effect do positive rake angles generally have on a cutting operation?POSSIBLE ANSWERS:Workpiece cratering is reduced, but the toolholder is destabilized.Cutting forces are decreased, but the cutting edge is weakened.The cutting edge is strengthened, but cutting forces are increased.The toolholder is stabilized, but workpiece cratering occurs more often.

Question

QUESTION:What effect do positive rake angles generally have on a cutting operation?POSSIBLE ANSWERS:Workpiece cratering is reduced, but the toolholder is destabilized.Cutting forces are decreased, but the cutting edge is weakened.The cutting edge is strengthened, but cutting forces are increased.The toolholder is stabilized, but workpiece cratering occurs more often.

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Solution

The effect of positive rake angles on a cutting operation is that cutting forces are decreased, but the cutting edge is weakened.

Here's why:

  1. A positive rake angle means the cutting edge of the tool is inclined away from the workpiece. This reduces the amount of force required to remove material, thus decreasing the cutting forces.

  2. However, this inclination also means the cutting edge is less supported, making it more susceptible to wear and tear. This results in the cutting edge being weakened.

This problem has been solved

Similar Questions

How is a cutting tool affected by reducing the end and side relief angles?POSSIBLE ANSWERS:Nose radius rigidity decreases, but chips become wider.The cutting edge is strengthened, but the quality of surface finish is reduced.Chips become thinner, but nose radius rigidity increases.The quality of surface finish is enhanced, but the cutting edge is weakened.

What angles describe the space between the tool flanks and the newly cut workpiece surface?POSSIBLE ANSWERS:Rake anglesRelief anglesShank anglesShoulder angles

QUESTION:Which two angles measure how far the tool face is tilted toward or away from the workpiece?POSSIBLE ANSWERS:Back and side relief anglesBack and side rake anglesEnd and side rake anglesEnd and side relief angles

What effect of the cutting tool causes burr formation?POSSIBLE ANSWERS:FatigueElastic deformationPlastic deformationFracture

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