Manufacturing Engineering & Technology
7th Edition
ISBN: 9780133128741
Author: Serope Kalpakjian, Steven Schmid
Publisher: Prentice Hall
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Chapter 38, Problem 14RQ
Describe what is meant by the term manufacturing system. What are its benefits?
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2 A metal block of mass m = 10 kg is sliding along a frictionless surface with an initial speed
Vo, as indicated below. The block then slides above an electromagnetic brake that applies a
force FEB to the block, opposing its motion. The magnitude of the electromagnetic force
varies quadratically with the distance moved along the brake (x):
10
FEB = kx²,
with k
= 5
N
m²
V₁ = 8 m/s
m = 10 kg
FEB
Frictionless surface
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⇒x
Determine how far the block slides along the electromagnetic brake before stopping, in m.
Q1: Determine the length, angle of contact, and width of a 9.75 mm thick
leather belt required to transmit 15 kW from a motor running at 900 r.p.m. The
diameter of the driving pulley of the motor is 300 mm. The driven pulley runs at
300 r.p.m. and the distance between the centers of two pulleys is 3 meters. The
density of the leather is 1000 kg/m³. The maximum allowable stress in the
leather is 2.5 MPa. The coefficient of friction between the leather and pulley is
0.3. Assume open belt drive.
5. A 15 kW and 1200 r.p.m. motor drives a compressor at 300 r.p.m. through a pair of spur gears having
20° stub teeth. The centre to centre distance between the shafts is 400 mm. The motor pinion is made
of forged steel having an allowable static stress as 210 MPa, while the gear is made of cast steel
having allowable static stress as 140 MPa. Assuming that the drive operates 8 to 10 hours per day
under light shock conditions, find from the standpoint of strength,
1. Module; 2. Face width and 3. Number of teeth and pitch circle diameter of each gear.
Check the gears thus designed from the consideration of wear. The surface endurance limit may be
taken as 700 MPa. [Ans. m = 6 mm; b= 60 mm; Tp=24; T=96; Dp = 144mm; DG = 576 mm]
Chapter 38 Solutions
Manufacturing Engineering & Technology
Ch. 38 - In what ways have computers had an impact on...Ch. 38 - Describe the benefits of computer-integrated...Ch. 38 - What is a database? Why is it necessary?Ch. 38 - What is an STL file? What is it popularly used...Ch. 38 - What are the differences between the terms...Ch. 38 - Prob. 6RQCh. 38 - What do the following abbreviations mean:...Ch. 38 - Prob. 8RQCh. 38 - Describe the purposes of process planning. How...Ch. 38 - Describe the features of a routing sheet. Why is...
Ch. 38 - What are the advantages of simulation of...Ch. 38 - What is group technology? Why was it...Ch. 38 - Explain the three types of GT coding:...Ch. 38 - Describe what is meant by the term...Ch. 38 - What does classification and coding mean in...Ch. 38 - Prob. 16RQCh. 38 - Describe your observations regarding Figs. 38.1...Ch. 38 - Prob. 19QLPCh. 38 - Give examples of primitives of solids other than...Ch. 38 - Describe your understanding of the octree...Ch. 38 - Explain the logic behind the arrangements shown...Ch. 38 - Prob. 23QLPCh. 38 - What is the difference between a variant system...Ch. 38 - Referring to Fig. 38.3, explain the advantages ofa...Ch. 38 - Prob. 26QLPCh. 38 - Describe situations that would require a design...Ch. 38 - Prob. 28QLPCh. 38 - How would you describe the principle of...Ch. 38 - Review various manufactured parts illustrated in...Ch. 38 - Think of a simple part and make a decision-tree...Ch. 38 - Review the machine arrangements in Fig. 38.12...Ch. 38 - Think of a simple product and make a routing...Ch. 38 - Review Fig. 38.9, and prepare a routing sheet for...
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- Q2. Determine the safety factors for the bracket rod shown in Figure 2 based on both the distortion-energy theory and the maximum shear theory and compare them. Given: The material is 2024-T4 aluminum with a yield strength of 47 000 psi. The rod length /= 6 in. and arm a = 8 in. The rod outside diameter od 1.5 in., id = 1 in, h=2 in., t=0.5 in., Load F= 1000 lb. Assumptions: The load is static and the assembly is at room temperature. Consider shear due to transverse loading as well as other stresses. (Note: solve in SI units) wall tube Figure 2 armarrow_forwardThe question has been set up with all the cuts needed to accurately derive expressions for V(x) and M(x). Using the cuts free body diagrams set up below, derive expressions for V(x) and M(x). If you use the method of cuts then validate your answers using calculus or vice versa.arrow_forwardIt is required to treat 130 kmol/hr of chloroform-air feed gas mixture that contains 12% chloroform. It is required to remove 93% of chloroform using 150 kmol/hr of solvent that contains 99.6% water and 0.4% chloroform. The cross sectional area of the column is 0.8 m². Calculate the column height using the following data; kx'.a = 1.35 (kmol/m³.s (Ax)), and ky'.a = 0.06 (kmol/m³.s (Ay)), kx/ky = 1.35, and the equilibrium data are: X 0 0.0133 0.033 y 0 0.01 0.0266 0.049 0.064 0.0747 0.0933 0.1053 0.0433 0.06 0.0733 0.111 0.1 0.12 0.14arrow_forward
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