Student Workbook and Project Manual for Hoffman/Hopewell's Precision Machining Technology
3rd Edition
ISBN: 9798214105710
Author: Peter J. Hoffman and Eric S. Hopewell
Publisher: Cengage Learning US
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Textbook Question
Chapter 5.4, Problem 3RQ
How many classes of fit are there in the Unified National system?
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Chapter 5 Solutions
Student Workbook and Project Manual for Hoffman/Hopewell's Precision Machining Technology
Ch. 5.1 - List the four main parts of the engine lathe.Ch. 5.1 - What are the two main purposes of the lathe...Ch. 5.1 - What part of the lathe is used to set the feed...Ch. 5.1 - Prob. 4RQCh. 5.1 - Prob. 5RQCh. 5.1 - What is the purpose of the leads crew of a lathe?Ch. 5.1 - What two functions can the lathe tailstock...Ch. 5.1 - The standard taper in most lathe tailstocks is the...Ch. 5.1 - Define the swing and the bed length of a lathe.Ch. 5.2 - What is the special name for the type of jaw-type...
Ch. 5.2 - The most common variation of the above chuck has...Ch. 5.2 - Name two material shapes that can be properly held...Ch. 5.2 - List two advantages of using a self-centering...Ch. 5.2 - Name two material shapes that can be properly held...Ch. 5.2 - List three benefits of holding a workpiece between...Ch. 5.2 - List three potential advantages of using an...Ch. 5.2 - List three characteristics of a workpiece that...Ch. 5.2 - What type of mandrel would be ideal for gripping a...Ch. 5.2 - Name the type of tailstock center that raid be...Ch. 5.2 - What two auxiliary devices can be used to...Ch. 5.2 - Explain the differences between the two auxiliary...Ch. 5.2 - Name the device that is used to transmit the...Ch. 5.2 - Which two tool posts are the most efficient if...Ch. 5.2 - What is the major advantage of using...Ch. 5.2 - What direction is a right-hand turning tool...Ch. 5.2 - What is an inscribed circle related to carbide...Ch. 5.2 - Would a 0.010 or 0.031 tool nose radius be...Ch. 5.2 - Which device may be used for either toolholding or...Ch. 5.3 - If a 0.050" depth of cut is taken on the diameter...Ch. 5.3 - A lathe cross slide uses a diameter-reading...Ch. 5.3 - In what units are feed rates measured for lathe...Ch. 5.3 - Are deeper cuts used for roughing or finishing...Ch. 5.3 - Calculate spindle RPM and machining time for...Ch. 5.3 - List three safety precautions related to clothing...Ch. 5.3 - What two materials are most commonly used for...Ch. 5.3 - What feature of a lathe cutting tool has a direct...Ch. 5.3 - Is a left-hand or right-hand tool normally used...Ch. 5.3 - What part of the lathe is used to feed the tool...Ch. 5.3 - When facing, why should the tool not be fed past...Ch. 5.3 - Should a left-hand or right-hand tool be used when...Ch. 5.3 - When and how should chips he removed from the work...Ch. 5.3 - What are two reasons for center drilling on the...Ch. 5.3 - When drilling and reaming on the lathe, how are...Ch. 5.3 - How can hole depth be controlled during drilling...Ch. 5.3 - What are two reasons boring may be selected to...Ch. 5.3 - Why must extra care be taken when performing...Ch. 5.3 - How can a tap be aligned when threading a hole on...Ch. 5.3 - Briefly define form cutting.Ch. 5.3 - How do grooving and cutoff speeds compare to...Ch. 5.3 - How can tool binding be overcome when cutting deep...Ch. 5.3 - List the two basic knurl patterns.Ch. 5.3 - How is knurling different from other lathe...Ch. 5.3 - List and briefly describe the two different types...Ch. 5.4 - The distance of actual contact of two mating...Ch. 5.4 - What feature of mating threads determines the...Ch. 5.4 - How many classes of fit are there in the Unified...Ch. 5.4 - Determine the major diameter limits for the...Ch. 5.4 - Determine the minor diameter limits for the...Ch. 5.4 - Determine the pitch diameter limits for the...Ch. 5.4 - Determine the approximate compound-rest in-feed...Ch. 5.4 - What is the name for the rotating device that...Ch. 5.4 - When threading, what is the reason for feeding the...Ch. 5.4 - Prob. 10RQCh. 5.4 - Why should the depth of cut be reduced for each...Ch. 5.4 - What dimension of the thread is measured by using...Ch. 5.4 - What measuring tool is used to visually inspect...Ch. 5.4 - List two applications of Acme threads.Ch. 5.4 - What type of thread is machined on a tapered...Ch. 5.5 - Briefly define a taper.Ch. 5.5 - What is the difference between an included angle...Ch. 5.5 - What does TPI stand for in relation to tapers?Ch. 5.5 - What are the TPI and TPF of a part with end...Ch. 5.5 - What are the corresponding centerline and included...Ch. 5.5 - What is the corresponding centerline angle of a...Ch. 5.5 - What is the limitation of the tool bit taper...Ch. 5.5 - What must be known to use the compound-rest taper...Ch. 5.5 - What taper turning methods allow use of the lathes...Ch. 5.5 - What two steps can be taken to eliminate backlash...Ch. 5.5 - The TPI specified on a print is 0.030". If...Ch. 5.5 - If TPF is 0.42", how much movement should register...Ch. 5.5 - What is the benefit of using the offset tailstock...Ch. 5.5 - What are two ways to reduce uneven pressure on...Ch. 5.5 - Calculate tailstock setover for a 13.5" part with...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- Full steps round 3 significant figures and use correct units plzarrow_forward1) What does the specification "8.8" in the standard designation of a bolt mean? Specify values including units. 2) Name two groups of standards in addition to national, industry-wide standards and where they are valid. 3) Which three options exist for defining dimensional tolerances in a technical drawing?arrow_forwardThread Fits and 7. Define fit, allowance, tolerance, and limits. 8. How are external UNC threads classified? 9. Name and describe three classifications of UNC fits. 10. How are thread fits designated for the ISO threads? Classifications 11. Why was the ISO metric system of threads adopted? 12. Describe a thread designated as M 56 X 5.5. 13. Name five thread forms used in North America and state the included angle of each. 14. What are the principal differences between the American and Unified threads?arrow_forward
- What feature of mating threads determines the class of fit?arrow_forwardPLease answer this correctly ASAP. Note:Tolereance is ± 1 in the 3rd significant digit. Exact answer please. This is a step by step question and I font have enough time to answer this so please can you answer all the necessary information/joints/points? I will rate you based on your answer. Thank you so mucharrow_forwardDefine the various types of fits? Also define fits in terms of shaft and hole basis systemarrow_forward
- 1. AISI steel designation for plain carbon steel. 2. In GD&T, what does this indicate | |? 3. A fit wherein the size of the diameter of the internal member is greater than the external member. 4. Brass is an alloy of copper and 5. A type of tolerance where the size of a part is permitted to be either larger or smaller than the given or specified dimension.arrow_forwarduse 3 sig figs plsarrow_forwardWhat is the class of fit of a ½-20 UNF-2B thread?arrow_forward
- The toleranced diameter of a hole is given as 0.990"/1.010" and the size of the mating pin is given as 0.985"/0.980 37. What is the maximum clearance for this fit? 0.030" 0.020" 0.025" c) 0.010" (P 38. What type of fit is this? transition b. clearance interference d. none of the above 39. A fit can be determined by specifying: upper limit b. allowance max. clearance b& c all the above TE d. 40. A fit is specified as 60H1109 in Metric unit. What is the tolerance grade for the shaft? 60 a. b. 9 11 d. none abovearrow_forwardKindly put correct FBD and units.Pls show complete solution.arrow_forward6. This is in a form of box wherein the needed data for dimensioning is placed. 7. AISI steel designation for chromium. 8. The minimum allowance between two mating parts. 9. In GD&T, what does this indicate 10. is an alloy of copper and tin.arrow_forward
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