Question
Please note: values of N and X are given based on Group # below: : (Points 45) A bolt manufacturing factory ships N number of
Please note: values of N and X are given based on Group # below: :
- (Points 45) A bolt manufacturing factory ships N number of bolts per X days a week. There are 15 process steps described below to realize the bolt and ship to customer: Assume the Factory does not have any breaks during the day.
- N=2700, X=7 days
- Consider Only one shift production in a day with no breaks.
- N=2700, X=7 days
- Step 1: Blanking, CT: 0.75 Sec, CO: 6 hours, 1 operator; MC reliability 100%, scrap rate 0.05%
Step 2: Necking, CT: 8.57 Sec, CO: 1.5 hours, 1operator; MC reliability 100%, scrap rate 0.05%
Step 3: shape Head, CT: 10 Sec, CO: 0.5 hours, 1operator; MC reliability 100%, scrap rate 0.05%
Step 4: Pickle and Dubois, CT: 0.02 Sec, CO: 0 hours, 1operator; MC reliability 100%, scrap 0%
Step 5: Carburize and induction, CT: 2.7 Sec, CO: 0 hours, 1operator; MC reliability 100%, scrap 1%
Step 6: Receiving, CT: 0.01 Sec, CO: 0 hours, 1operator; MC reliability 100%, scrap 0.05%
Step 7: Metrology Lab, CT: 0.02 Sec, CO: 0 hours, 1operator; MC reliability 100%, scrap 0.05%
Step 8: Roll thread, CT: 0.857 Sec, CO: 2 hours, 1operator; MC reliability 100%, scrap 0%
Step 9: Phosphorous and Oil, CT: 0.02 Sec, CO: 0 hours, 1operator; MC reliability 100%, scrap 0%
Step 10: Re-Roll and Box, CT: 0.857 Sec, CO: 2 hours, 1operator; MC reliability 100%, scrap 0%
Step 11: 100% sort, CT: 5 Sec, CO: 0 hours, 1operator; MC reliability 100%, scrap 0.05%
Step 12: Salt Spray, CT: 0.02 Sec, CO: 10 hours, 1operator; MC reliability 100%, scrap 0.05%
Step 13: Doc final, CT: 0.02 Sec, CO: 0 hours, 1operator; MC reliability 100%, scrap 0.05%
Step 14: Chemical and physical certification, CT: 0.02 Sec, CO: 0 hours, 1operator; MC reliability 100%, scrap 0.05%
Step 15: Label & ship, CT: 0.02 Sec, CO: 0 hours, 1operator; MC reliability 100%, scrap 0.05%
Inventory information:
Before:
Step1 500 coils, equivalent to 5 days bolts requirements;
Step2 38,400 pieces;
Step3 3360 pieces;
Step4 2880; pieces;
Step5 4500 pieces;
Step6 1066 pieces;
Step7 6000 pieces;
Step8 4500 pieces;
Step9 1243 pieces;
Step10 1243 pieces;
Step11 1450 pieces;
Step12 7500pieces;
Step13 4500pieces;
Step14 4500pieces;
Step15 3000pieces; and at the shipment store just after step 15: 7500 pieces
Rubric
- Compute takt time 2 points
- Prepare current state value Stream map including time line and information flow 9 points,
- Now show the inventory lead time in number of days by your computation: 4 points
- Plan improvement in a copy of current state map (improvement planning Map using kaizen lightening sparks) 10 points
- Prepare the future state based on your Groups effort showing all required information for a value stream - 15 points
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