Question 2
The sketch above is a lathe set-up.
- (i) Identify the set-up.
(ii)Identify the parts labelled J, K, L and M.
- State the function of the parts labelled K, P and Q.
- Explain the term grit as applied to grinding wheel.
Observation
Some of the candidates could not even identify the set-up. The required responses to this question are as follows:
(a) (i) Identifying the set-up : Turning between centres
(ii) Identifying the parts labelled J, K, L, M
J - Driving plate
K - Carrier
K - Workpiece
M - Tailstock
(b) Stating the function of the parts labelled K, P and Q
K - it transmits motion from the face plate to the workpiece.
P - it is used to cut the workpiece to the required shape.
Q - it works in conjunction with the face plate to transmit motion to the carrier .
- Explaining the term grit as applied to grinding wheels
Grit refers to the abrasive particles of grinding wheels.