Question
Q2: A customized box assembly consists of a base, a top cover, four sides, and two handles. Table 1 shows the processing sequence required by
Q2: A customized box assembly consists of a base, a top cover, four sides, and two handles. Table 1 shows the processing sequence required by each part, and Table 2 shows process information assuming equal process times for all parts at any given operation (Example, painting a cover, or a base, or a handle, or the side takes 0.3 hours). If the demand on the box is 500 units per the 8 hours shift,
Table 1 |
| ||||
Part | Operation Sequence | Parts/box | |||
Cover | 1 2 3 4 7 | 1 | |||
Handle | 1 3 2 6 7 | 2 | |||
Side | 1 3 4 5 6 7 | 4 | |||
Base | 1 3 4 5 7 | 1 | |||
Table 2 | |||||
Op. # | Op. Descriptions | Hr/part | Reliability | Efficiency | % Scrap |
1 | Shear | 0.1 | 0.80 | 0.95 | 2 |
2 | Chop | 0.15 | 0.85 | 0.95 | 2 |
3 | Punch | 0.05 | 0.90 | 0.92 | 1 |
4 | Form | 0.2 | 0.95 | 0.85 | 3 |
5 | Rivet | 0.1 | 0.90 | 0.98 | 1 |
6 | Paint | 0.3 | 0.95 | 0.95 | 1 |
7 | Assembly | 0.1 | 0.95 | 0.95 | 1 |
- Determine the number of components to start with at operation 4.
- Determine the number of machines required for operations 3.
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