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.8, Problem 5ST
Why do dies have a chamfer on the cutting end?
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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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- wing (3) You are to produce a machine part (a shaft) with different diameters S0mm.35mm and 30mm with thread and keyway at the end of the shaft (a) How many machines and cutting tools will you use to produce this part 1arrow_forwardBriefly describe the meaning of spark gap in wire cut machining by drawing a sketch.arrow_forwardWhich of the following is the example of cutting shaping process? O Pressing O Forging O Knurling O Drawingarrow_forward
- Cold Circular saws are capable of making cuts accurate to what tolerance?arrow_forward.cutting speed is 9m/min. The return time to cutting time is 1:4 and the feed is 3mm Q.4 (i) Find the time required for taking a cemplete cut on a plate 600 × 900 mm", if the cutting speed is 9m/min. The return time to cutting time is 1:4 and the feed is 3mm for the shaper. The clearance at each end is 75 mm. (11) A hole of 30 mm diameter and 75 mm depth is to be drilled. The feed is 1.3 mm/rev and the cutting speed is 62 m/min. Assuming tool approach and tool over travel as 6 mm. Calculate : (a) Cutting time and (b) Material removal rate Q.5 Write short note on the following - (i) Up milling and down milling processes (ii) Balancing of grinding wheels (iii) Gear hobbing ittp3.7 w w w.ItuommC.comarrow_forwardMain advantage of the Forming taps is: Evacuates the chips along the shank (for blind holes Creates the thread without cutting Pushes the chips forward through the hole (for through holes)arrow_forward
- Puanlar) 16 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. V vT" = C. %3D Ce Tm 1. %3D 19 fv 25 31 37 43 49 187.9 m/min b) 325.8 m /min 275.8 m/min d) 226.6 m/minarrow_forward3) The following data are available from orthogonal cutting experiment, Depth of cut t, = 0.13 mm, width of cut w = 2.5 mm, rake angle a = -5°, cutting speed v = 2 m/s, Chip thickness, t= 0.23 mm, cutting force, F. = 430 N, thrust force, F = 280 N. Determine the following: Shear angle Friction Coefficient u (using F= µ N) Shear Stress t,S Shear strain y on the shear plane. Power required to perform the operation. Gross power required if the efficiency of the machine is 85%. Specific Energy, Utarrow_forward34 - 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_forward
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