Degarmo's Materials And Processes In Manufacturing
13th Edition
ISBN: 9781119492825
Author: Black, J. Temple, Kohser, Ronald A., Author.
Publisher: Wiley,
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Textbook Question
Chapter 27, Problem 30RQ
What are some ways to improve the efficiency of a planer? Do any of these apply to the shaper?
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Chapter 27 Solutions
Degarmo's Materials And Processes In Manufacturing
Ch. 27 - Why is sawing one of the most efficient of the...Ch. 27 - Explain why tooth spacing (pitch) is important in...Ch. 27 - What is the tooth gullet used for on a saw blade?Ch. 27 - Explain what is meant by the set of the teeth on a...Ch. 27 - How is tooth set related to saw kerf?Ch. 27 - Why can a bandsaw blade not be hardened throughout...Ch. 27 - What are the advantages of using circular saws?Ch. 27 - Why have bandsawing machines largely replaced...Ch. 27 - Explain how the hole in Figure 27.7 is made on a...Ch. 27 - How would you calculate or estimate Tm for a...
Ch. 27 - What is the disadvantage of using gravity to feed...Ch. 27 - What is unique about the broaching process...Ch. 27 - Can a thick saw blade be used as a broach? Why or...Ch. 27 - Broaching machines are simpler in a basic design...Ch. 27 - Why is broaching particularly well-suited for mass...Ch. 27 - In designing a broach, what would be the first...Ch. 27 - Why is it necessary to relate the design of a...Ch. 27 - What two methods can be utilized to reduce the...Ch. 27 - For a given job, how would a broach having...Ch. 27 - Why are the pitch and radius of the gullet between...Ch. 27 - Why are broaching speeds usually relatively low,...Ch. 27 - What are the advantages of shell-type broach...Ch. 27 - Why are most broaches made from alloy or...Ch. 27 - What are the advantages of TiN-coated broaching...Ch. 27 - For mass-production operations, which process is...Ch. 27 - What is the difference between the roughing teeth...Ch. 27 - The sides of a square, blind hole must be machined...Ch. 27 - The interior, flat surfaces of socket wrenches,...Ch. 27 - Prob. 29RQCh. 27 - What are some ways to improve the efficiency of a...Ch. 27 - To what extent is filing different from sawing?Ch. 27 - Prob. 32RQCh. 27 - Prob. 33RQCh. 27 - Prob. 34RQCh. 27 - A surface 12 in. long is to be machined with a...Ch. 27 - The pitch of the teeth on a simple surface broach...Ch. 27 - Estimate the (approximate maximum) horsepower...Ch. 27 - Estimate the approximate force acting in the...Ch. 27 - In cutting a 6-in.-long slot in a piece of AISI...Ch. 27 - The strength of a pull broach is determined by its...Ch. 27 - Suppose you want to shape a block of metal 7 in....Ch. 27 - Could you have saved any time in Problem 7 by...Ch. 27 - Derive the equation for shaping cutting speed.Ch. 27 - How many strokes per minute would be required to...Ch. 27 - How much time would be required to shape a flat...Ch. 27 - What is the metal removal rate in Problem 11 if...Ch. 27 - Suppose you decide to mill the flat surface...Ch. 27 - A planer has a 10-hp motor, and 75% of the motor...
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- Which if these do not belong the the group Hubbing; roll piercing; heading; coiningarrow_forwardWith a neat sketch explain shaper machine and its parts?arrow_forwardIn this project, you have been asked to technically support the team in the following case: The team is working to select the best method to manufacture a steel threaded bolt, see Figure 2. You have been asked to figure out different alternatives to manufacture the bolt and make a comparison between the alternatives in terms of productivity, quality, surface finish, cost and others engineering factors. Which process do you recommend the most and why? thread nut runout shank radius head * grip length – nominal length thread length Figure 2: Threaded bolt and nut.arrow_forward
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- 34 - The outside diameter of a cylinder made of titanium alloy is to be turned. The starting diameter is 400 mm and the length is 1100 mm. The feed is 0.35 mm/rev and the depth of cut is 2.5 mm. The cut will be made with a cemented carbide cutting tool whose Taylor tool life parameters are: n= 0.24 and C-450. Units for the Taylor equation are min for tool life and m/min for cutting speed. Compute the cutting speed that will allow the tool life to be just equal to the cutting time for this part. vT" = C . AD,L Tm %3D fv a) 325.8 m /min b) 275.8 m/min 226.6 m/min d) O 187.9 m/minarrow_forwardWhat are the corresponding centerline and included angles to 5/8" TPF?arrow_forwardQuestion 3. Three tool materials are to be compared for the same finish turning operation on a batch of 100 steel parts: high speed steel, cemented carbide, and ceramic. For the high speed steel tool, the 170 Taylor equation parameters are: n= 0.125 and C= 70. The price of the HSS tool is $15.00 and it is estimated that it can be ground and reground 15 times at a cost of $1.50. Tool change time = 3 min. Both carbide and ceramic tools are in insert form and can be held in the same mechanical toolholder. The Taylor equation parameters for the cemented carbide are: n = 0.25 and C = 500; and for the ceramic: n = 0.6 and C = 3,000. The cost per insert for the carbide = $6.00 and for the ceramic = $8.00. Number of cutting edges per insert in both cases = 6. Tool change time = 1.0 min for both tools. Time to change parts = 2.0 min. Feed = 0.25 mm/rev, and depth = 3.0 mm. The cost of machine time = $30/hr. The part dimensions are: diameter = 56.0 mm and length = 290 mm. Setup time for the…arrow_forward
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