An operation hat a setup of 30 minutes and a cycle (unit productions time of I 5

Question

An operation hat a setup of 30 minutes and a cycle (unit productions time of I 5 mm The lot quantity (batch size) is 500 units Productive hour cost is S50. Find the following Lot hours (production time for the entire lot) Unit time (with set-up Mime expressed in hours Find the operation cost A press operation for machine part production line has a setup of 12 hour for the fora die. which costs 56.000. The operation time is estimated to 15 mm foe loading. drawing to size and trim. and unloading to the conveyor, which completes the cycle The run (lot) for this product (model) per year is 20.000 units. Material cost for the corrosion-resistant steel sheet-metal blank (including all losses) included is SIS (per item). The productive hour cost for the press is $175.65. Find the operation lot hours i Each press is expected to operate 4000 annual hours How many presses arc necessary'' There are 2 (ora die sets necessary for each item Find the modified operation lot hours Describe your view of contemporary practice of Operation Estimating in industry

Explanation / Answer

Answer 1)

ST = Setup time = 30 minutes

PT = Production time = 1.5 minute

BS= Batch Size= 500 units

Productive hour cost = $ 50

1) Lot hours = =BS*PT= 500*1.5 = 750 minutes= 12.5 hours

2) Unit time = total operations time/ BS = (Setup time + Lot hours)/BS= ( 0.5+12.5)/500= 0.026 hours

3) Operation cost = Total operations time *Productive hour cost = (12.5+0.5)*50=$ 650

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