Manufacturing Engineering & Technology
7th Edition
ISBN: 9780133128741
Author: Serope Kalpakjian, Steven Schmid
Publisher: Prentice Hall
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Chapter 36, Problem 40QTP
To determine
For the data in Problem 36.39, assume that the lubricant change can cause the manufacturing process to achieve a roughness of
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You have been using pens and mechanical pencils for many years now. Investigate the designs of at least five different pens and mechanical pencils. Discuss what you think are important design parameters. Discuss the advantage and disadvantage associated with each design. Write a brief reportexplaining your findings.
(a)
An engineer would like to drill a square hole of 20 mm x 20 mm with depth of
25 mm on a layered structure of natural fibre-reinforced polymer composite. He
encountered delamination problem in the workpiece (Figure 3) when he used
conventional cutting tool to drill the hole. Instead of using conventional
machining process, discuss ONE suitable advanced machining process that can
be applied for this machining purpose and predict TWO possible limitations for
the selected process.
Cutting
Tool
Delamination
Composite Material
Figure 3. Delamination of the composite material.
You have been using pens and mechanical pencils for many years now. Investigate the design of at least five different pens and mechanical pencils. Discuss what you think are important design parameters. Discuss the advantage and disadvantage associated with each design. Write a brief report explaining your findings.
Chapter 36 Solutions
Manufacturing Engineering & Technology
Ch. 36 - Define the terms sample size, random sampling,...Ch. 36 - What are chance variations?Ch. 36 - Prob. 3RQCh. 36 - Define standard deviation. Why is it important...Ch. 36 - Describe what is meant by statistical process...Ch. 36 - When is a process out of control? Explain.Ch. 36 - Explain why control charts are developed. How...Ch. 36 - What is a loss function? How is it used?Ch. 36 - What do control limits indicate?Ch. 36 - Prob. 10RQ
Ch. 36 - What is acceptance sampling? Why was it developed?Ch. 36 - Prob. 12RQCh. 36 - What is meant by six-sigma quality?Ch. 36 - Prob. 14RQCh. 36 - Prob. 15RQCh. 36 - Give three methods of nondestructive testing...Ch. 36 - Explain why major efforts are continually being...Ch. 36 - Prob. 18QLPCh. 36 - Prob. 19QLPCh. 36 - Prob. 20QLPCh. 36 - Prob. 21QLPCh. 36 - Prob. 22QLPCh. 36 - What are the advantages of automated...Ch. 36 - Prob. 24QLPCh. 36 - Prob. 25QLPCh. 36 - Explain why GO and NOT GO gages (see Section...Ch. 36 - Prob. 27QLPCh. 36 - Prob. 28QLPCh. 36 - Prob. 29QLPCh. 36 - Prob. 31QLPCh. 36 - Beverage-can manufacturers try to achieve failure...Ch. 36 - Assume that in Example 36.3 the number of samples...Ch. 36 - Calculate the control limits for averages and...Ch. 36 - Calculate the control limits for (a) number of...Ch. 36 - In an inspection with a sample size of 12 and a...Ch. 36 - Prob. 37QTPCh. 36 - The average of averages of a number of samples of...Ch. 36 - Prob. 39QTPCh. 36 - Prob. 40QTPCh. 36 - Prob. 41SDPCh. 36 - Describe your thought on whether products should...Ch. 36 - Prob. 44SDPCh. 36 - Prob. 45SDPCh. 36 - Prob. 46SDPCh. 36 - Prob. 47SDPCh. 36 - Prob. 48SDPCh. 36 - Many components of products have a minimal effect...
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- Briefly describe and illustrate a manufacturing process for each of the following items, mentioning specific manufacturing issues which may arise with each process: 3. (a) Part A of this pasta rolling machine.arrow_forwardSelect an appropriate manufacturing process, where dimensional accuracy and precision is not important for most of the part features. However, certain features such as tapped holes and bore hole require precision. Assume the material is delrin.arrow_forward(a) Give three examples of applications where a solid lubricant would be preferable to aliquid lubricant. For each example, explain the advantages of using a solid lubricantand suggest one suitable candidate giving reasons for your suggestion. Support yourdiscussion by citing relevant sourcesarrow_forward
- (d) In one production line, there is ultrasonic machines (USM) and electro- discharge machines (EDM). You need to cut one material in form of thick plate. The material of the thick plate is aluminum. Choose the best machine that can be used to operate the plate. justify your answer by considering material removal rate, process duration, the material of the workpiece and the waste from the operation. (e) Discuss the major challenges in implementing computer integrated manufacturing (CIM) to the factory.arrow_forwardIn a sheet metal forming press, the shape to be formed is hemispherical cup of radius 15 cm in 2mm thick mild steel sheet. The force required to deform sheet is 8 kN. The forming hammer should approach job from a distance of 30 cm. The production rate required is 240 components/hr. Calculate and suggest the following specifications of the various hydraulic components used: a. Hydraulic cylinder (bore & length); b. Pump pressure and flow rate; c. Electric motor HP considering 75% pump efficiency; d. Reservoir size; and e. Size of pump inlet and discharge tubing.arrow_forwardWhat is the difference between a CCT curve and a TTT curve, and state it in points?arrow_forward
- A process currently services an average of 59 customers per day. Observations in recent weeks show that its utilization is about 90 percent, allowing for just a 10 percent capacity cushion. If demand is expected to be 70 percent of the current level in five years and management wants to have a capacity cushion of just 4 percent, what capacity requirement should be planned? The needed capacity requirement is nothing customers per day. (Enter your response rounded up to the next whole number.)arrow_forwardQ1) The redesigned brake caliper is manufactured using SLM from Titanium Ti6Al-4V alloy powder. How many SLM machines are required to manufacture parts for 450 vehicleswhich are to be built in a 20-month production period. The following parameters are in effect:• A single caliper is built at a time• The caliper has a height of 173mm.• Each layer is 32 µm thick• Only one laser is used• The average laser scanning time for each layer with a single laser is 63 seconds• The powder recoating time for every odd numbered layer is 12 seconds and 25 for every evennumbered layer• Every 8th layer is scanned twice, at 2.3 times the usual laser scan speed to provide additional heatinput for in-situ heat treatment• The SLM machine operates at a duty rate of 42% of the 24-hour day, Monday to Friday, for 48 weeksof the year, with 10% of production time lost to unscheduled downtime.arrow_forward• In a sheet metal forming press the shape to be formed is hemispherical cup of radius 15 cm in 2mm thick mild steel sheet. The force required to deform sheet is 8 kN. The forming hammer should approach job from a distance of 30 cm. The production rate required is 240 components/hr. Calculate and suggest the following specifications of the various hydraulic components used: a) Hydraulic cylinder (bore & length) b) Pump pressure and flow rate c) Electric motor HP considering 75% pump efficiency d) Reservoir size e) Size of pump inlet and discharge tubingarrow_forward
- 1. Demonstrate the suitable method for measuring the force required to snap a chocolate bar. 2. Choose and explain TWO (2) honey attributes obtained from a texture profile analysis (TPA) curve. Sketch the TPA curve to aid your explanation.arrow_forward(a) Figure 4 shows a HSS drill bit to be coated with TiN coating using either PVD or CVD coating proces. There is a requirement from the client; the product must be coated with a coating process that will not change its properties and will maintain its sharp edge on all sides. Considering the special requirement from the client: i. Propose the appropriate coating process to be used for this product. ii. Justify your answer in (i). Figure 4: Drill bit straight flutearrow_forwardshow the full solution and capture your answer well. provide a brief descriptionarrow_forward
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