Machine Tool Practices (11th Edition)
11th Edition
ISBN: 9780134893501
Author: Richard R. Kibbe, Roland O. Meyer, Jon Stenerson, Kelly Curran
Publisher: PEARSON
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Textbook Question
Chapter B.3, Problem 8ST
A new hacksaw blade should not be used in a cut started with a blade that has been used. Why?
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22.48 H ow would you go about measuring the effectiveness of cutting fluids? Describe your method and explain any difficulties that you might encounter.
2 1.57 Show that, for the same shear angle, there are two rake angles that give the same cutting ratio.
2 1.25 The cutting force increases with the depth of cut and decreasing rake angle. Explain why.
Chapter B Solutions
Machine Tool Practices (11th Edition)
Ch. B.1 - List several uses of the arbor press.Ch. B.1 - A newly machined steel shaft with an interference...Ch. B.1 - The ram of an arbor press is loose in its guide...Ch. B.1 - When a bushing is pushed into a bore that is...Ch. B.1 - Prob. 5STCh. B.1 - What difference is there in the way a press fit is...Ch. B.1 - Prior to installing a bushing with the arbor...Ch. B.1 - Name five ways to avoid tool breakage and other...Ch. B.2 - Name two types of bench visesCh. B.2 - Prob. 2ST
Ch. B.2 - How can the finished surface of a part be...Ch. B.2 - Name three things that should never be done to a...Ch. B.2 - How should a vise be Lubricated?Ch. B.2 - Prob. 6STCh. B.2 - What advantage does the lever-jawed wrench offer...Ch. B.2 - Some objects should never be struck with a hard...Ch. B.2 - Why should pipe wrenches never be used on bolts,...Ch. B.2 - What are the two important things to remember...Ch. B.3 - What is the kerf?Ch. B.3 - What is the set on a saw blade?Ch. B.3 - What is the pitch of the hacksaw blade?Ch. B.3 - What determines the selection of a saw blade for a...Ch. B.3 - Hand hacksaw blades fall into two basic...Ch. B.3 - Give four causes that make saw blades dull.Ch. B.3 - Give two reasons why hacksaw blades break.Ch. B.3 - A new hacksaw blade should not be used in a cut...Ch. B.4 - What are the four different cuts found on files?Ch. B.4 - Name four coarseness designations for files.Ch. B.4 - Which of the two kinds of files-single cut or...Ch. B.4 - What are the coarseness designations for needle...Ch. B.4 - Prob. 5STCh. B.4 - What causes a file to get dull?Ch. B.4 - Why should a handle be used on a file?Ch. B.4 - How does the hardness of a workpiece affect the...Ch. B.4 - Should pressure be applied to a file on the return...Ch. B.4 - Why is a round file rotated while it is being...Ch. B.5 - Prob. 1STCh. B.5 - What is the purpose of a starting taper on a...Ch. B.5 - What is the advantage of a spiral flute reamer...Ch. B.5 - How does the shank diameter of a hand reamer...Ch. B.5 - Prob. 5STCh. B.5 - Prob. 6STCh. B.5 - What is the purpose of cutting fluid in reaming?Ch. B.5 - Prob. 8STCh. B.5 - How much reaming allowance is left for hand...Ch. B.5 - If you were repairing the lathe tailstock taper,...Ch. B.6 - What type of tap is used to produce threads that...Ch. B.6 - Prob. 2STCh. B.6 - Prob. 3STCh. B.6 - When is a spiral fluted tap used?Ch. B.6 - How are thread-forming taps different from...Ch. B.6 - How are taper pipe taps identified?Ch. B.6 - Why are finishing and roughing Acme taps used?Ch. B.6 - Why are rake angles varied on taps for different...Ch. B.7 - What kind of tools are used to drive taps when...Ch. B.7 - What is a hand tapper?Ch. B.7 - What is a tapping attachment?Ch. B.7 - Which three factors affect the strength of a...Ch. B.7 - How deep should the usable threads be in a tapped...Ch. B.7 - What causes taps to break while tapping?Ch. B.7 - What causes rough and tom threads?Ch. B.7 - Give three methods of removing broken taps from...Ch. B.8 - What is a die?Ch. B.8 - What tool is used to drive a die?Ch. B.8 - How much adjustment is possible with a round split...Ch. B.8 - What are important points to watch when assembling...Ch. B.8 - Why do dies have a chamfer on the cutting end?Ch. B.8 - Why are cutting fluids used?Ch. B.8 - What diameter should a rod be before being...Ch. B.8 - Why should a rod be chamfered before being...Ch. B.9 - Prob. 1STCh. B.9 - Why should a tool grinder never be used for rough...Ch. B.9 - Prob. 3STCh. B.9 - Prob. 4STCh. B.9 - Prob. 5STCh. B.9 - Prob. 6STCh. B.9 - Prob. 7STCh. B.9 - What is the purpose of the wheel blotter?Ch. B.9 - Prob. 9STCh. B.9 - What does the wheel ring test do?
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- The vertical band saw is particularly useful, as it can be used to make straight cuts as well as ______________.arrow_forwardWhy is it important to make good-quality cuts?arrow_forwardGenerally, to decrease or eliminate built-up edge, _______________________________________. Group of answer choices the cutting speed needs to be decreased tip radius of the tool need to be increased depth of cutting needs to be increased rake angle needs to be increased PreviousNextarrow_forward
- A tool with zero rake angle used in orthogonal cutting when its clearance angle a is changed from 10 to 7 deg, Calculate the approximate % change in the life of the tool.arrow_forwardChoose TWO (2) types of cutting processes that are suitable for cutting thick materials (>20mm thick plate).arrow_forward21.52 Using trigonometric relationships, derive an expression for the ratio of shear energy to frictional energy in orthogonal cutting, in terms of angles α , β , and Φ only.arrow_forward
- Calculate the time required for completing a 5mm deep finishing cut on a 150mm wide, 600mmlong face of a 25mm thick steel block using a face milling cutter of 150mm diameter with 6teeth. The cutting condition are Vc =1.5m/sec and fz = 0.1mm.arrow_forwardAn orthogonal cutting operation is being carried out under the following conditions: t0=0.38 mm, tc=0.65 mm, width of the cut= 2.5 mm, V=3.5 m/s, rake angle=6°, Fc= 515 N, and Ft=210 N. Calculate the percentage of the total energy that is dissipated in the shear plane.arrow_forward21.28 What are the effects of performing a cutting operation with a dull tool? A very sharp tool?arrow_forward
- 21.3 What is the cutting ratio? Is it always less than 1?explainarrow_forward22.8 Is the elastic modulus im portant for cutting-tool materials? Explainarrow_forwardA bar of 70 mm diameter is being cut orthogonally and is reduced to 68 mm by cutting tool in case mean length of the chip is 68.9 mm. find the cutting ratio determine shear angle also if the rake angle is 10 degree.arrow_forward
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