Name any three of the lathe operations shown - Leaving Cert Engineering - Question Question 1 - 2016
Question Question 1
Name any three of the lathe operations shown.
(a) (i) Taper turning
(ii) Drilling
(iii) Parting off
(iv) Parallel turning
(b) Describe any three of the following i... show full transcript
Worked Solution & Example Answer:Name any three of the lathe operations shown - Leaving Cert Engineering - Question Question 1 - 2016
Step 1
Name any three of the lathe operations shown.
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Answer
Taper turning
Drilling
Parting off
Step 2
Describe any three of the following in relation to machining: (i) Four jaw chuck
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Answer
The four jaw independent chuck allows for more precise gripping of workpieces as each jaw can be adjusted individually. This is especially useful for irregularly shaped parts, ensuring the work is centered accurately.
Step 3
Describe any three of the following in relation to machining: (ii) Clearance angle
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The clearance angle is crucial as it ensures that the cutting tool does not rub against the workpiece. This angle prevents excessive wear on the tool, maintains cutting efficiency, and allows for smoother operation.
Step 4
Describe any three of the following in relation to machining: (iii) Pilot hole
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A pilot hole is a small initial hole drilled before a larger drill bit is used. This guarantees that the larger drill is centered properly and prevents drill bit wander, ensuring accurate machining of the final hole.
Step 5
Name the process in which this machining tool is used.
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The process is Knurling.
Step 6
Describe two things to be considered when setting up this machining tool: (ii)
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Ensure that the tool is centered and square to the workpiece.
Make sure it is well secured in the tool post.
Step 7
State one safety precaution to be observed when using the machining tool: (iii)
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Ensure the tool does not collide with the chuck.
Step 8
State three advantages of operating a lathe by computer numerical control (CNC) rather than manual control.
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Better accuracy achieved due to precise movement of the cutting tool.
Self-contained work area, safer for the user.
Consistent replication of pieces.
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