Question: Part X requires machining on a milling machine (operations A and B are required). Find the number of machines required to produce 3,000 per week.
Part X requires machining on a milling machine (operations A and B are required). Find the number of machines required to produce 3,000 per week. Assume the company will be operating 5 days per week, 18 hours per day. The following information is know.
Operation= O Standard time= ST Efficiency= E Reliability = R Scrap= S
O: A ST: 3 mins E: 95% R: 95% S: 2%
O: B ST: 5 mins E: 95% R: 90% S: 5 %
The milling machine requires tool changes and preventive maintenance after every lot of 500 parts. These changes require 30 minutes.
Part A is produced in machines 1 and 2. Part B is produced in machines 3 and 4. Part A and B are assembled in workstation 5 to create C. Assembly C is painted in process 6. Given the scrap percentages p1, p2,p3...p6, determine an equation that can be used to calculate the require input quantity to machine 1.
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