3. [5 points] A new production process consists of eleven motion elements as shown in the...

Transcribed Image Text:

3. [5 points] A new production process consists of eleven motion elements as shown in the table below. It is known that the personal allowance to be given in this plant is 110% and the plant efficiency is estimated to be 90%. Calculate the production rate of this line (in parts/hr). Element Description Time (0.001 min) 1 P 10 Pick up the body. 10 234567 MR 10 Move to the right. 10 MR 10 Move hand to the welder. 10 G 15 P 20 Grasp the welder. 15 Pick up the welder. 20 ML 20 Move the welder to the left. 20 15A40 Weld the body to the base. 600 8 MR 20 Move the welder to the right. 20 9 R 10 10 LR 30 11 MR 30 Release the welder in position. Lift the welded parts with care. Move the welded parts aside. 10 30 30 4. [10 points] A manufacturer of staplers uses an EDM machine to produce the housing of the stapler. The manufacturer expects to produce 100,000 units per year. The present yearly interest rate is 10%. Assume that the plant efficiency is 90% and the overhead is 150% of direct labor cost. The cost factors on which the manufacturer will base the decision are shown in the table below. Note that this manufacturer is a Six Sigma company, so reject cost is nearly 0. Initial cost EDM $90,000 Machining time per unit 0.5 min Percent defective unit 0.3% Unit cost of reject $0.0 Operating expense per hour $0.1 Useful life in years 10 Operator cost per hour $20 Show how each of the following costs is calculated: (a) capital recovery cost: (b) direct labor cost: [Note that (A/P, i%, n) = (1+1)-1 3. [5 points] A new production process consists of eleven motion elements as shown in the table below. It is known that the personal allowance to be given in this plant is 110% and the plant efficiency is estimated to be 90%. Calculate the production rate of this line (in parts/hr). Element Description Time (0.001 min) 1 P 10 Pick up the body. 10 234567 MR 10 Move to the right. 10 MR 10 Move hand to the welder. 10 G 15 P 20 Grasp the welder. 15 Pick up the welder. 20 ML 20 Move the welder to the left. 20 15A40 Weld the body to the base. 600 8 MR 20 Move the welder to the right. 20 9 R 10 10 LR 30 11 MR 30 Release the welder in position. Lift the welded parts with care. Move the welded parts aside. 10 30 30 4. [10 points] A manufacturer of staplers uses an EDM machine to produce the housing of the stapler. The manufacturer expects to produce 100,000 units per year. The present yearly interest rate is 10%. Assume that the plant efficiency is 90% and the overhead is 150% of direct labor cost. The cost factors on which the manufacturer will base the decision are shown in the table below. Note that this manufacturer is a Six Sigma company, so reject cost is nearly 0. Initial cost EDM $90,000 Machining time per unit 0.5 min Percent defective unit 0.3% Unit cost of reject $0.0 Operating expense per hour $0.1 Useful life in years 10 Operator cost per hour $20 Show how each of the following costs is calculated: (a) capital recovery cost: (b) direct labor cost: [Note that (A/P, i%, n) = (1+1)-1