Step 1: Process layout (P).
Used when similar machines are grouped together. Ideal for batch production.
Hence:
\[
P \rightarrow 2\; (\text{Batch production})
\]
Step 2: Product layout (Q).
Machines are arranged according to product flow. Ideal for mass and continuous production.
Thus:
\[
Q \rightarrow 3\; (\text{Mass production})
\]
Step 3: Fixed position layout (R).
The product remains stationary, and workers/materials move around it. Used for large, customized jobs.
Thus:
\[
R \rightarrow 1\; (\text{Job production})
\]
Step 4: Final mapping.
\[
P-2, Q-3, R-1
\]
This matches option (A).
Final Answer: (A)
| Defect in deep drawing cup | Reason | ||
|---|---|---|---|
| P | Orange peel on the surface of cup | 1 | No blank holding force |
| Q | Wrinkling at the flange of cup | 2 | Very small corner radius of the punch |
| R | Tearing at the bottom corner of cup | 3 | Large grain size in the blank material |
| S | Earring at the top edge of the cup | 4 | Anisotropy of the blank material |

