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.
Question
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.
Solution
The cutting edge is strengthened, but the quality of surface finish is reduced.
Here's why:
-
Reducing the end and side relief angles increases the contact area between the cutting tool and the workpiece. This results in a stronger cutting edge as there is more material to withstand the forces during cutting.
-
However, a smaller relief angle also means that the tool is more likely to rub against the workpiece after the cut. This rubbing action can lead to a poorer surface finish on the workpiece.
-
Additionally, a smaller relief angle can also increase the heat generated during cutting, which can further degrade the surface finish and potentially damage the cutting tool.
So, while reducing the end and side relief angles can strengthen the cutting edge, it can also reduce the quality of the surface finish.
Similar Questions
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.
What angles describe the space between the tool flanks and the newly cut workpiece surface?POSSIBLE ANSWERS:Rake anglesRelief anglesShank anglesShoulder angles
What effect of the cutting tool causes burr formation?POSSIBLE ANSWERS:FatigueElastic deformationPlastic deformationFracture
How does an increased lead angle affect chip formation? Increased lead angles create:POSSIBLE ANSWERS:Chips that are wider and thinner, allowing for faster cutting speeds.Chips that are hard and tough and cause rapid flank wearing.Discontinuous chips, leading to improved surface finish quality.Thick chips that tend to crater the tool and tangle the workpiece.
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
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.