EBK MANUFACTURING ENGINEERING & TECHNOL
7th Edition
ISBN: 8220100793431
Author: KALPAKJIAN
Publisher: PEARSON
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Textbook Question
Chapter 26, Problem 6RQ
What causes grinding sparks in grinding? Is it useful to observe them? Explain.
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Manufacturers are designing grinding spindles to turn at higher and higher speeds.
What is the main reason for this, and what is one drawback of increasing speed?
Name 2 reasons why cost increases as finish allowances decrease.
Tool temperatures are low at low cutting speeds and high at high cutting speeds,
but low again at even higher cutting speeds. Explain why.
Describe and explain the difficulties involved in grinding parts made of (a) thermoplastics; (b) thermosets; (c) ceramics.
Chapter 26 Solutions
EBK MANUFACTURING ENGINEERING & TECHNOL
Ch. 26 - What is an abrasive? What are superabrasives?Ch. 26 - How is the size of an abrasive grain related to...Ch. 26 - Why are most abrasives made synthetically?Ch. 26 - Describe the structure of a grinding wheel and its...Ch. 26 - Explain the characteristics of each type of bond...Ch. 26 - What causes grinding sparks in grinding? Is it...Ch. 26 - Define metallurgical burn.Ch. 26 - Define (a) friability, (b) wear flat, (c) grinding...Ch. 26 - What is creep-feed grinding and what are its...Ch. 26 - How is centerless grinding different from...
Ch. 26 - What are the differences between coated and bonded...Ch. 26 - What is the purpose of the slurry in...Ch. 26 - Explain why grinding operations may be necessary...Ch. 26 - Why is there such a wide variety of types, shapes,...Ch. 26 - Prob. 15QLPCh. 26 - The grinding ratio, G, depends on the type of...Ch. 26 - What are the consequences of allowing the...Ch. 26 - Explain why speeds are much higher in grinding...Ch. 26 - Prob. 19QLPCh. 26 - Prob. 20QLPCh. 26 - Prob. 21QLPCh. 26 - Referring to the preceding chapters on processing...Ch. 26 - Explain the reasons that so many deburring...Ch. 26 - What precautions should you take when grinding...Ch. 26 - Prob. 25QLPCh. 26 - What factors could contribute to chatter in...Ch. 26 - Prob. 27QLPCh. 26 - Prob. 28QLPCh. 26 - Describe the effects of a wear flat on the overall...Ch. 26 - What difficulties, if any, could you encounter in...Ch. 26 - Prob. 31QLPCh. 26 - Prob. 32QLPCh. 26 - Prob. 33QLPCh. 26 - Jewelry applications require the grinding of...Ch. 26 - List and explain factors that contribute to poor...Ch. 26 - Calculate the chip dimensions in surface grinding...Ch. 26 - If the strength of the workpiece material is...Ch. 26 - Assume that a surface-grinding operation is being...Ch. 26 - Estimate the percent increase in the cost of the...Ch. 26 - Assume that the energy cost for grinding an...Ch. 26 - It is known that, in grinding, heat checking...Ch. 26 - Prob. 45QTPCh. 26 - With appropriate sketches, describe the principles...Ch. 26 - Prob. 47SDPCh. 26 - Vitrified grinding wheels (also called ceramic...Ch. 26 - Conduct a literature search, and explain how...Ch. 26 - Visit a large hardware store and inspect the...Ch. 26 - Obtain a small grinding wheel or a piece of a...Ch. 26 - In reviewing the abrasive machining processes in...Ch. 26 - Obtain pieces of sandpaper and emery cloth of...Ch. 26 - On the basis of the contents of this chapter,...
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- Make a list about the process of Mechanical Grinding and another of Reactive Grinding, please be clear in your writing (preferably in digital format) and consider all the corresponding stepsarrow_forwardExplain why the same grinding wheel may act soft or hard.arrow_forward“Small grains are used for grinding hard work materials and large grains are used for grinding soft work materials”. Explain the reason(s) behind this statementarrow_forward
- What is a grinding lathe tool bits? Explain elaborately.arrow_forward(a) Describe four (4) functions of cutting fluid. (b) Explain four (4) consequences of allowing the temperature to rise during grinding. (c) Discuss five (5) design considerations that must be taken by the machinist in order to obtain good surface finish in the grinding process.arrow_forwardWhy dressing is required for a continuously used wheel? and how can we dress a grinding wheel?arrow_forward
- 1. Using a horizontal axis surface grinder, a flat surface of high strength steel sizing 150 mm× 300 mm is to be ground. A grinding wheel with 200 mm diameter and 20 mm thickness is used. Assume a table speed, wheel speed and in-feed rate of 10 m/min, 20 m/s, and 5mm/pass, respectively. Please estimate the grinding time required.arrow_forwardEstimate the relative cost of grinding a steel part to a tolerance of ±0.0005 in versus turning it to a tolerance of +0.003 in.arrow_forwardWhy Centerless Grinding machine uses two grinding wheels during grinding? Type your Answer here:-arrow_forward
- In grinding certain tools the linear velocity of the grinding surface should not exceed 6000fts/s. Find the maximum number of revolutions per second (a) 12 in (diameter) (b) 8-in wheel.arrow_forwardIn machining a mild steel work piece with carbide tool, the life of the tool was found to be 1 hour and 40 minutes, at a spindle speed of 30 m/min. Calculate the tool life if it has to be operated at a speed of 40% higher than the initial cutting speed. Also calculate the cutting speed if the tool is required to have a life of 2 hours and 45 minutes. Assume Taylor's exponent valuen is 0.28.arrow_forward27) (a) Grinding wheel manufacturer has written the following information"W A 46 B 5 E 17" on the grinding wheel. Explain (b) Sketch and explain the centerless grinding. (c) Neatly sketch and define reaming and countersinking operationarrow_forward
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