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 34, Problem 1RQ
To determine
The first five level of automation obtained by replacing the human attribute.
Expert Solution & Answer
Explanation of Solution
The first five-level of automation which is obtained from the human attribute,
- The first level of automation is represented as which replaces the effort of the human joint with the use of lever, screw, and pulley is used in the machine.
- The second level of automation is represented as which replaces the energy of the human muscle with electrical power.
- The third level of automation is represented as which replaces the human dexterity with the use of the self-feeding or automatic machine.
- The fourth level of automation is represented as which replaces the diligence of humans with the open-loop feedback numeric control.
- The fifth level of automation is represented which replaces the human capability of judgment with the use of closed-loop feedback numeric control.
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3. A steel bar is pinned to a vertical support column by a 10 mm diameter hardened dowel pin,
Figure 1. For P = 7500 N, find:
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c. the minimum value of d to prevent tearout failure if the steel bar has a shear strength of
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A press that delivers 115 strokes per minute, each stroke providing a force of 7826 N throughout a distance of 18 mm. The press efficiency is 90% and is driven by a 1749-rpm motor.
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10cm
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2) P=1956.5 N
25cm
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الفترة أو الحجم تمر بالتي عثر
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Chapter 34 Solutions
DeGarmo's Materials and Processes in Manufacturing
Ch. 34 - Prob. 1RQCh. 34 - Give an everyday example of a household device or...Ch. 34 - Prob. 3RQCh. 34 - Prob. 4RQCh. 34 - Prob. 5RQCh. 34 - Prob. 6RQCh. 34 - How is a machining center different from a milling...Ch. 34 - Prob. 8RQCh. 34 - What makes an NC machine a machining center?Ch. 34 - At what level of automation is your typical...
Ch. 34 - Figure 24.6 shows tool paths to rough and finish...Ch. 34 - In Figure 34.6. what is a G70 finish cycle (see...Ch. 34 - Prob. 13RQCh. 34 - Prob. 14RQCh. 34 - Prob. 15RQCh. 34 - Prob. 16RQCh. 34 - What is the difference between an FMS and an FMC?Ch. 34 - What does the A(5) level of automation require...Ch. 34 - Prob. 19RQCh. 34 - Prob. 20RQCh. 34 - Prob. 21RQCh. 34 - Prob. 22RQCh. 34 - Prob. 23RQCh. 34 - FMSs use CNC machines for processing and AGVs,...Ch. 34 - Why are transfer lines replacing relay logic with...Ch. 34 - Prob. 26RQCh. 34 - Prob. 27RQCh. 34 - Prob. 28RQCh. 34 - Prob. 29RQCh. 34 - Prob. 30RQCh. 34 - Prob. 31RQCh. 34 - Compare a human worker in a manned cell to the...Ch. 34 - Prob. 33RQCh. 34 - What is a teach pendant?Ch. 34 - Prob. 35RQCh. 34 - Prob. 1PCh. 34 - Prob. 2PCh. 34 - Prob. 3P
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