DeGarmo's Materials and Processes in Manufacturing
12th Edition
ISBN: 9781118987674
Author: J. T. Black, Ronald A. Kohser
Publisher: WILEY
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Chapter 22, Problem 1P
Suppose you have a turning operation using a tool with a zero back rake and
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A job has to be machined in shaping and the process parameters are given below:
a. Length of the job=120 mm
b. Speed of the motor=640 rpm
c. Cutting speed=264 m/min
d. Tool allowance before cutting =30 mm
e. Tool allowance after cutting=15mm
Determine the cutting to return stroke ratio for the above operation and draw the arrangement of machining with tool head and allowances.
In an orthogonal machining with a tool of 9 degree orthogonal rake angle, the uncut chip thickness is 0.2mm.
The chip thickness fluctuates between 0.25 mm and 0.4 mm. The ratio of the maximum shear angle to the
minimum shear angle during machining is
In an orthogonal cutting operation an 8 mm deep groove is to be turned on a 50 mm diameter steel bar. Spindle speed is 300 rpm and a feed rate of 0.25 mm/rev is given to the tool. Produced chips have a width of 2 mm. Calculate the material removal rate at the beginning and at the end of the cut.
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Chapter 22 Solutions
DeGarmo's Materials and Processes in Manufacturing
Ch. 22 - For metal-cutting tools, what is the most...Ch. 22 - What is hot hardness compared to hardness?Ch. 22 - Prob. 3RQCh. 22 - Why is impact strength an important property in...Ch. 22 - Cemented carbide tools are made by a powder...Ch. 22 - What are the primary considerations in tool...Ch. 22 - What is the general strategy behind coated tools?Ch. 22 - Prob. 8RQCh. 22 - How is a CBN tool manufactured?Ch. 22 - Prob. 10RQ
Ch. 22 - Prob. 11RQCh. 22 - Discuss the constraints in the selection of a...Ch. 22 - What does cemented mean in the manufacture of...Ch. 22 - What advantage do ground carbide inserts have over...Ch. 22 - What is a chip groove?Ch. 22 - What is the DCL?Ch. 22 - Suppose you made four beams out of carbide, HSS,...Ch. 22 - Multiple coats or layers are put on the carbide...Ch. 22 - What tool material would you recommend for...Ch. 22 - What makes the process that makes TiC coatings for...Ch. 22 - Why does a TiN-coated tool consume less power than...Ch. 22 - For what work material are CBN tools more commonly...Ch. 22 - Why is CBN better for machining steel than...Ch. 22 - What is the typical coefficient of variation for...Ch. 22 - What is meant by the statement Tool life is a...Ch. 22 - The typical value of a coefficient of variation in...Ch. 22 - Machinability is defined in many ways. Explain how...Ch. 22 - What are the chief functions of cutting fluids?Ch. 22 - Prob. 29RQCh. 22 - Why is the PVD process used to coat HSS tools?Ch. 22 - Why is there no universal cutting tool material?Ch. 22 - What is an 18-4-1 HSS composed of?Ch. 22 - Over the years, tool materials have been developed...Ch. 22 - Why is the rigidity of the machine tool an...Ch. 22 - Explain how it can be that the tool wears when it...Ch. 22 - What is a honed edge on a cutting tool and why is...Ch. 22 - Suppose you have a turning operation using a tool...Ch. 22 - A 2 in.-diameter bar of steel was turned at 284...Ch. 22 - Prob. 3PCh. 22 - The following data have been obtained for...Ch. 22 - In the insert is set with a 0 side cutting-edge...Ch. 22 - Prob. 6PCh. 22 - Here is a single point tool. Identify angles A...Ch. 22 - Figure 22.B gives data for cutting speed and tool...
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- Q1. A job of diameter 30 mm is being machined at feed of s = 1.0 mm/rev and spindle speed of n = 500 rpm, with a tool of orthogonal rake angle ? = 5° and primary cutting edge angle ? = 60°. Determine the height at which the tool tip should be set to achieve actual rake angle of 0°.arrow_forwardQ1) Explain the four types of chips formation with sketches? What is tool life in Lathe?arrow_forwardto perform a rough cut single point facing operation in a lathe of 5 mm diameter cylinder workpiece made of bronce . Feed rate is 0.5 mm/rev , depth of cut of 4.5mm, and Specific Energy of 3 W-s/mm^3. What is the Material Removal Rate in mm^3/s?arrow_forward
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