Precision Machining Technology
3rd Edition
ISBN: 9781337795302
Author: Peter, Hoffman.
Publisher: Cengage Learning,
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Question
Chapter 4.3, Problem 14RQ
To determine
The number of turns a tap must turn to produce
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1. Name some uses of threads. Give an example of each.
NOTE: Screw Thread – A screw thread may be visualized as a flexible form, like a piece of string that has been wrapped around a cylinder, or the sides of the cylindrical hole, at a uniform rate of advance, producing a form known as a helix. It may also be considered as a raised form produced on the outside of a cylinder, or on the inside walls of a cylindrical hole after a thread-cutting operation has been completed.
What is the lead of a double cut thread when the pitch is 2.5 mm?
What is the mechanical advantage of a 1/4" diameter screw with 20 threads per inch?
Chapter 4 Solutions
Precision Machining Technology
Ch. 4.1 - Upright drill presses are available in _______ and...Ch. 4.1 - List two general types of upright drill press...Ch. 4.1 - Explain how the size of an upright drill press is...Ch. 4.1 - Briefly describe the term sensitive drill press.Ch. 4.1 - Briefly describe a gang drill press and its...Ch. 4.1 - When would a radial-arm drill press most likely be...Ch. 4.1 - Briefly describe a micro drill press and its...Ch. 4.2 - What are the two main materials used to make...Ch. 4.2 - What two types of shanks are commonly found on...Ch. 4.2 - Name three functions of the flutes on a twist...
Ch. 4.2 - Name two types of flute styles for machine...Ch. 4.2 - Prob. 5RQCh. 4.2 - What is the major difference between counterboring...Ch. 4.2 - What must be used to secure a workpiece to an...Ch. 4.2 - What devices are used to elevate a workpiece to...Ch. 4.2 - If 50 parts measuring 1" I" 3" each needed a...Ch. 4.2 - Which would be the best workholding device for...Ch. 4.2 - Which would be the best workholding device for...Ch. 4.2 - Which would be the best workholding device for...Ch. 4.3 - List five drill press safety guidelines.Ch. 4.3 - Briefly define the term cutting speed.Ch. 4.3 - What unit of measure is used to define cutting...Ch. 4.3 - What is feed, and how is feed stated for drill...Ch. 4.3 - Briefly describe two methods for locating hole...Ch. 4.3 - What is spotting and why is it performed?Ch. 4.3 - What is pecking, or peck drilling?Ch. 4.3 - Briefly contrast the speed and feed differences...Ch. 4.3 - What drill press component can be used to control...Ch. 4.3 - Calculate feed depth for a 90-degree countersink...Ch. 4.3 - Calculate feed depth for an 82-degree countersink...Ch. 4.3 - What benefit does tapping on the drill press offer...Ch. 4.3 - How many turns must a 1/4-20 tap be turned into a...Ch. 4.3 - Prob. 14RQ
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Similar questions
- What is the pitch of a M10 x 1.25 thread?arrow_forwardConsider a thread callout of Dia 0.375-10 UNF-2B. How far will the thread travel if it is subjected to 3 full rotations? (Assume infinite thread lengths for simplicity)? Units are in Inches List your answer in a decimal format.arrow_forwardConsider a thread callout of Dia 0.375-10 UNF-2B. How far will the thread travel if it is subjected to 3 full rotations? (Assume infinite thread lengths for simplicity)? Units are in Inches please answer quicklyarrow_forward
- Refer to drawing 21A044, How many full threads will the extra fine tapped hole contain? (Disregard chamfer) All abbreviations are standardarrow_forwardClear my chóice In a tap set, a plug tap is used for final cutting the thread throughout its length after using two other taps before. Select one: O True O False fjoiner (8).pdf Type here to search TCL Carrow_forwardRefer to drawing 21A044, How many full threads will the fine tapped hole contain at minimum depth (disregard chamfer)? All abbreviations are standardarrow_forward
- Consider following thread call-out 3/4-10 UNC-2B, what does the 2B mean? is the standard quality for a bulk of internal threads average quality, internal threads average quality external threads, but not as good as 3B quality average quality internal threads, but not as good as a 3B quality average quality, external threadsarrow_forward7) In a tap set, an intermediate tap is used to start a thread form in a drilled hole Select one: True Falsearrow_forwardWhat is the major diameter of the thread? 16mm?arrow_forward
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