Precision Machining Technology (MindTap Course List)
2nd Edition
ISBN: 9781285444543
Author: Peter J. Hoffman, Eric S. Hopewell, Brian Janes
Publisher: Cengage Learning
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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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Students have asked these similar questions
What is called the fit?
1) the difference between the maximum and minimum limits of size,
2) the assembly of an external and an internal feature of size of the same type,
3) the algebraic difference between the limit size and the nominal size.
5. Name 3 types of fits?
state of two kinds of basic system of fits. which system of fit is preferred in normal application ?why?
Chapter 5 Solutions
Precision Machining Technology (MindTap Course List)
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 - 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
- The denomination for a force or shrink fit in the US system is ?arrow_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_forwardWhat feature of mating threads determines the class of fit?arrow_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_forwardSTATICS : METHOD OF SECTIONS - GET THE GIVEN, WHAT IS ASKED, AND THE ANSWER. - MAKE A PROPER FREE BODY DIAGRAM. (IT DOES HAVE THE GREATER POINTS IN THIS ACTIVITY) - YOUR SUB ANSWERS MUST BE IN 6 DECIMAL PLACES. - YOUR FINAL ANSWER MUST BE IN 4 DECIMAL PLACES. - TELL THE DIRECTION AND WHETHER IT IS TENSILE OR COMPRESSION. - WRITE YOUR SOLUTION PROPERLY (EASY TO UNDERSTAND). - I PROVIDED A SAMPLE PROBLEM SO THAT YOU WILL KNOW HOW TO SOLVE IT. THANK YOU IN ADVANCE! Solve the forces in PQ, FL, QG, and QM. Hint: Identify all zero-force members and remove them from the structure. In the summation of moments, look for a point where member forces at the supports converge so that their moment arm is zero. From here you will be able to solve PQ. Solve FL using summation of moments from the other half of the section. Solve QG and QM using Method of Joints.arrow_forwarduse 3 sig figs plsarrow_forward
- What material is being specified by this section line pattern? (Refer to Figure 6-2.)arrow_forwardWhat can you do to make parts fit without having to recut or regrind them?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
- Please could you provide me with More details. and different answer if is that possible?arrow_forwardStatics; workingarrow_forwardB ot general use from particular areas of the Nomenclature. Question 6 Classify the following parts, giving reasons for your answers: (a) A speed indicator for a motor vehicle. (b) A metal reinforced rubber conveyor belt. (c) A set of drumsticks that are imported with a base drum. (d) A sail for a yacht. (e) A plastic cover for an illuminated sign plate. () A pair of hinges for a pair of spectacles. (g) A textile sleeve for a men's woven coat. (h) A steel registration plate for a motor vehicle. )A drawer for an office metal filing cabinet. U) A spark plug for a motor vehicle engine. (k) A copper spring that is used to sedure a battery within a portable flashlight. (1) A gas compressor for a refrigerator. 18:13arrow_forward
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