5. (a) A machine part has a machinery time of 2.8 min per part on a milling machine. During an 8-hr shift 200 units are to be produced. Of the 480 min available for production, the milling machine will be operational 80% of the time. During the time the machine is operational, parts are produced at a rate equal to 95% of the standard rate. How many milling machines are required? (5 marks) (b) Itemize the Material Handling Principles(4 marks) (c) A product has a market estimate of 97,000 components and requires three processing steps (turning, milling, and drilling) having scrap estimates of P1=0.04, P2=0.01, P3=0.03. Calculate the production input to operation 1. (4 marks)
Added by Carlos R.
Close
Step 1
- Total available time = 480 minutes - Operational time = 80% of 480 minutes = 0.8 × 480 = 384 minutes Show more…
Show all steps
Your feedback will help us improve your experience
Supreeta N and 71 other Physics 101 Mechanics educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Adi S.
A production machine is purchased for an initial cost plus installation of $500,000. Its anticipated life is 7 years. The machine is planned for a two-shift operation, eight hours per shift, and five days per week. Assume 50 weeks per year. The applicable overhead rate on this type of equipment is 35%. Determine the equipment cost rate. At the same time, the production machine is used to produce a batch of parts, each with a starting material cost of $2.35. The batch quantity is 100. The actual processing time in the operation is 3.72 min. The time to load and unload each workpiece is 1.60 min. The tool cost is $4.40, and each tool can be used for 20 pieces before it is changed, which takes 2.0 min. Before production can begin, the machine must be set up, which takes 2.5 hr. The hourly wage rate of the operator is $16.50/hr, and the applicable labor overhead rate is 40%. Determine (a) the cycle time for the piece, (b) the average production rate when setup time is figured in, and (c) the cost per piece. (Hint: Use the equipment cost rate from question 4)
A manufacturing company has received an order to machine 1000 parts. For quality assurance, one sample for every 20 samples has to be tested for tensile strength. The starting work part costs 12.50 SR each. Part handling time for each cycle = 5.3 min, and machining time per part = 7.25 min. It takes 150 min to set up the machine for the whole production. Equipment cost rate = 63.00 SR/hr, and labor cost rate = 35.00 SR/hr. The overhead cost is 37% of the labor and equipment cost rates. The cutting tool in the operation costs 152.00 SR, and it must be changed every 26 parts. Tool change time = 6.45 min. Availability of the machine tool = 94.0%, in addition, the defect rate is 3%. Determine: a) required time (hours) to complete the batch; b) production rate of good parts; c) total cost of the batch; d) cost of a good-finished part.
Recommended Textbooks
University Physics with Modern Physics
Physics: Principles with Applications
Fundamentals of Physics
Watch the video solution with this free unlock.
EMAIL
PASSWORD