Calculate Lead Time Michigan Machining Company machines metal parts for the auto

Question

Calculate Lead Time Michigan Machining Company 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 80 parts. A part requires 4 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 manufacturing 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 4 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. Value-added time min min Non-value-added time min min Total lead time min min Value-added ratio (as a percent) % %

Explanation / Answer

Value Added Time- It is the time in which actual value is added to the product or the value of process which a customer is willing to pay. example-production time

Non-value added time- The time spent on process which does not add any value to the product, such as move time, inspection time.

Lead Time- It is also Known as Throuput time or Turnaround time, which means total time spent on a product from start to finish, such as process time+ wait time+movement time.

1.Traditional Philisophy=

-Value added time-Process time of milling+ process time of finishing

4Mins*80parts+6Mins*80parts

320+480=800Mins

-Non Value Added Time=Movement time

7Minustes

-Value Added Ratio=Value Added Time/Value Added Time+Non-Value Added Time*100

800/800+7*100

99.13%

-Lead time=Total of Process time and movement time

800+7

807Minutes

2.Lean Philisophy

-Value Added Time= Process time of Miller+Process time of Finishing

4Minutes*4Parts+6Minutes*4Parts

16+24=40Minutes

-Non-Vlaue Added Time=Nil( As no Movement Time is Spent)

-Value Added Rati=Value Added Time/Value Added Time+Non Value Added Time*100

40/40+0*100

100%

Lead Time-40Minutes + 0

40Minutes

Related Questions

Navigate

• Browse (All)
• Browse C
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.