5. Develop Witness simulation model from the flowchart in the previous problem (See Pictuer). Assume normal distributions.

Activity	Cycle Time	Cycle Time Standard Deviation	Labor
Load casting	Batch of 3 every 5 minutes
Machine flange	17.53	2.3	1
Inspect	4.75	0.67	1
Transfer	Speed=1, capacity=3
Drill 5 holes	12	2.6
Tap threads for 5 holes	17	3.8
Inspect threads	16	2.3
Ship castings

What is the hourly capacity for the cell?

What is the bottleneck process?

How would you balance the flow?

Load castings into cell Machine gasket mounting flange on casing_ castings will be returned to Machining center and re- machined Inspect flange for planarity Transfer to flange mounting hole drilling station Accepted Drill 5-5.8 mm holes in flange Tap 6 mm threads scrapped Failed spect threads Passed for dimension Load castings into cell Machine gasket mounting flange on casing_ castings will be returned to Machining center and re- machined Inspect flange for planarity Transfer to flange mounting hole drilling station Accepted Drill 5-5.8 mm holes in flange Tap 6 mm threads scrapped Failed spect threads Passed for dimension