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Jackson Fabricators Inc. machines metal parts for the automotive industry. Under the traditional manufacturing approach, the parts are machined through two processes: milling and finishing. Parts are produced in batch sizes of 50 parts. A part requires 3 minutes in milling and 7 minutes in finishing. The move time between the two operations for a complete batch is 8 minutes. Under the lean philosophy, the part is produced in a cell that includes both the milling and finishing operations. The operating time is unchanged; however, the batch size is reduced to 5 parts and the move time is eliminated. Determine the value-added, non-value-added, and total lead times, and the value-added ratio under the traditional and lean manufacturing methods. If required, round percentages to one decimal place.

Sagot :

Answer and Explanation:

The calculation is given below:-

Particulars               Traditional Philosophy     Manufacturing  

                                         Lean                        Philosophy

Value added                 3 + 7 = 10                              10

Non value added        10 × (50 - 1) = 490                  10 × (5 - 1) = 40

Total lead time                  500                                       50

Value-added ratio

(as a percent)              10 ÷ 500 × 100 = 2%                 10 ÷ 50 × 100 = 20%

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