Assignment: Complete all problems and turn this assignment in as a group before the given due date. All work must be shown for credit. Equations: O = 1 - P) Ix = 0 /(1-P) F=SQ E.HR Problem Part X requires machining on a milling machine (Operations Q and Rare required). Find the number of machines required to produce 5000 parts per week. Assume the company will be operating 5 days per week, 18 hours per day. The following information is known: Operation Standard Time Scrap Efficiency 95% 95% Reliability 95% 90% 250 3 min 5% Problem 2 During one eight-hour shift, 800 non-defective parts are desired from a fabrication operation. The standard time for the operation is 20 minutes. Because the machine operators are unskilled, the actual time it takes to perform the operation is 25 minutes, and on average, one-fourth of the parts that begin the fabrication are scrapped. Assuming that each of the machines used for the operation will not be available for one hour of each shift, determine the number of machines required. Problem 3 Part Q is produced in machines 1 and 2. Part R is produced in machines 3 and 4. Parts Q and Rare assembled in workstation 5 to create S. Assembly S is painted in process 6. Given the scrap percentages di.....do for each operation and the desired output Os for S, determine an equation that can be used to calculate the required input to machine 1. (Draw the process and give an equation for the input into machine 1.) Problem 4 Given the following, what are the machine fractions for A, B, and C to produce parts Q and R2 Part Q routing is machine A, then B, then C. 110,000 parts are to be produced per year. Part routing is machine B. then A, then C. 250,000 parts are to be produced per year. Setup times for parts Q & Rare 20 minutes and 40 minutes, respectively. Machine C 0.15 hr 0.10 hr 2% Part Q Standard Time Part R Standard Time Part Q Scrap Estimate Part R Scrap Estimate Historical Efficiency Reliability Factor Equipment Availability Machine A 0.20 hr 0.15 h 4% 4% 90% 90% 1600 hr/yr Machine B 0.25 hr 0.15 h 3% 3% 90% 95% 1600 hr/yr 2% 95% 95% 1600 hr/yr