Surface Finish (Leaving Cert Engineering): Quizzes
📚Quizzes
Practise the questions
13 questions from this quiz
ShowHide
Practise the questions
13 questions from this quiz
What does tool height relative to workpiece centre significantly impact in turning operations?
What does tool height relative to workpiece centre significantly impact in turning operations?
Cutting performance & surface finish
What happens to the rake angle when the cutting tool is positioned below the workpiece centre?
What happens to the rake angle when the cutting tool is positioned below the workpiece centre?
It becomes reduced
What surface defect occurs when a tool positioned below centre is used for facing operations?
What surface defect occurs when a tool positioned below centre is used for facing operations?
A dimple or depression on the face
What happens to the clearance angle when the tool is set too high above the workpiece centre?
What happens to the clearance angle when the tool is set too high above the workpiece centre?
It decreases or may be eliminated
What major problem results from positioning the tool too high above the workpiece centre?
What major problem results from positioning the tool too high above the workpiece centre?
Excessive friction & heat buildup
How does tool nose radius size affect surface finish quality in turning operations?
How does tool nose radius size affect surface finish quality in turning operations?
Larger nose radii create smoother finish
What type of tool produces inferior surface finishes compared to tools with nose radii?
What type of tool produces inferior surface finishes compared to tools with nose radii?
Sharp pointed tools
Which benefit is NOT provided by cutting fluids in professional turning operations?
Which benefit is NOT provided by cutting fluids in professional turning operations?
Increasing spindle speed automatically
What specific function do cutting fluids perform regarding metal chips during machining?
What specific function do cutting fluids perform regarding metal chips during machining?
Wash away chips that could scratch
How does spindle speed relate to surface finish quality in turning operations?
How does spindle speed relate to surface finish quality in turning operations?
Higher speeds produce better finishes
What unit is used to measure spindle speed and where is the spindle located?
What unit is used to measure spindle speed and where is the spindle located?
RPM; in the lathe headstock
How does feed rate speed affect surface finish quality in turning operations?
How does feed rate speed affect surface finish quality in turning operations?
Slower feed rates produce better finish
What machining strategy uses high feed rates to prioritise speed over surface finish?
What machining strategy uses high feed rates to prioritise speed over surface finish?
Roughing cycles