Question

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 2 minutes in milling and 6 minutes in finishing. The move time between the two operations for a complete batch is 7 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 6 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.

Answer 1

Answer and Explanation:

The computation is shown below:-

Particulars               Traditional Philosophy     Manufacturing

                                          Lean                        Philosophy

Value added                 2 + 6 = 8                                 8

Non value added        8 × (50 - 1) = 392                   8 × (6 - 1) = 40

Total lead time                   400                                  48

Value-added ratio

(as a percent)              8 ÷ 400 × 100 = 2%                 8 ÷ 48 × 100 = 16.17%