Shigley's Mechanical Engineering Design (McGraw-Hill Series in Mechanical Engineering)
10th Edition
ISBN: 9780073398204
Author: Richard G Budynas, Keith J Nisbett
Publisher: McGraw-Hill Education
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Chapter 1, Problem 7P
Estimate how many times more expensive it is to grind a steel part to a tolerance of ±0.0005 in versus turning it to a tolerance of ±0.003 in.
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1. Calculate the tolerances and allowances for a shaft with a diameter of 40 mm with a tolerance area k and a tolerance quality number 6, paired with a hole of the same diameter as the shaft and a tolerance area H with a tolerance quality 7. Also draw these tolerances schematically. ( answer in 20 minutes very needed thank u )
Would a flatness tolerance of .010 for the part in the drawing below be appropriate?
Yes
O No
3.000
1.000
XXX = +.005
ANGLES ± 1°
A machine part to be machined may be made either from an alloy of aluminum or steel. There is an order for 8000 units. Steel costs P3.80 per kg. while aluminum costs P8.70 per kg. If steel is used, the steel per unit weighs 110grams, for aluminum, 30 grams. When steel is used, 50 units can be produced per hour, for aluminum, 80 units per hour with aid of tool costing P640, which will be useless after the 8,000 units are finished. The cost of the machine and the operator is P10.80 per hour. How much is the cost per unit if aluminum is used?
Chapter 1 Solutions
Shigley's Mechanical Engineering Design (McGraw-Hill Series in Mechanical Engineering)
Ch. 1 - Select a mechanical component from Part 3 of this...Ch. 1 - Select a mechanical component from Part 3 of this...Ch. 1 - Select an organization listed in Sec. 16, go to...Ch. 1 - Go to the Internet and connect to the NSPE website...Ch. 1 - Go to the Internet and connect to the NSPE website...Ch. 1 - Estimate how many times more expensive it is to...Ch. 1 - The costs to manufacture a part using methods A...Ch. 1 - A cylindrical part of diameter d is loaded by an...Ch. 1 - When one knows the true values x1 and x2 and has...Ch. 1 - Use the true values x1 = 7 and x2 = 8 (a)...
Ch. 1 - A solid circular rod of diameter d undergoes a...Ch. 1 - A fatigue test is performed on rotating beam...Ch. 1 - Determinations of the ultimate tensile strength...Ch. 1 - The lives of parts are often expressed as the...Ch. 1 - The tensile 0.2 percent offset yield strength of...Ch. 1 - A mechanical system comprises three subsystems in...Ch. 1 - From See. 3-12, the maximum shear stress in a...Ch. 1 - A round cold-drawn 1045 steel rod has a mean...Ch. 1 - A beam subjected to axial loading will experience...Ch. 1 - Three blocks A, B, and C and a grooved block D...Ch. 1 - The volume of a rectangular parallelepiped is...Ch. 1 - A pivot in a linkage has a pin in the figure whose...Ch. 1 - A circular cross section O ring has the dimensions...Ch. 1 - Prob. 25PCh. 1 - Prob. 26PCh. 1 - Prob. 27PCh. 1 - Prob. 28PCh. 1 - Convert the following to appropriate ips units:...Ch. 1 - Convert the following to appropriate SI units: (a)...Ch. 1 - Generally, final design results are rounded to or...Ch. 1 - Repeal Prob. 1-31 for the following: (a) = F/wt,...Ch. 1 - Repeat Prob. 131 for: (a) = F/A, where A = d2/4, F...
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- Estimate the relative cost of grinding a steel part to a tolerance of ±0.0005 in versus turning it to a tolerance of +0.003 in.arrow_forwardDynamics of Rigid Bodies Please help ASAP. Rate will be given accordingly. Please answer correctly this is my last chance. Please write your answer on paper. Thank you so much. Note: The tolerance is ±1 in the third significant digit. this is only one question :)arrow_forwardIndicate the following technical tolerance requirements in Fig.3. a) The diameter of the middle cylinder is Odh7, use Envelope requirement; b) Cylindricity tolerance of d is 0.009mm, straightness of axis of od is $0.012mm; c) Total run-out tolerance of right end surfaces related to axis of Pd is 0.01 mm; d) The surface of od cylinder is obtained by the method of removing material, and the maximum allowable value of Rz is 0.4µm. All surfaces are obtained by the method of removing material, and all the roughness Ra allowable value is 6.4 pm.arrow_forward
- A number of through holes with 10-mm-diameter have been drilled through 30-mm thick cast iron plate. At a cutting speed of 25 m/min, the high-speed steel drill tool lasted for 44 holes. But, when the cutting speed increased to 35 m/min, the drill tool lasted for only five holes. The feed used in the both cases is 0.08 mm/rev. Determine the values of n and Cin the Taylor tool life equation for the data, where cutting speed v is expressed in m/min, and tool life T is expressed in min.arrow_forwardPlease help me answer this correctly ASAP. Please write the solution on paper. Thank you. Note: The tolerance is ± 1 in the third significant digit.arrow_forwardA GO/NO-GO snap gage is required to inspect the diameter of a shaft that is 1.000 ± 0.020. A wear allowance of 2% of the entire tolerance band is applied to the GO side. Determine (a) the nominal sizes of (a) the GO gage and (b) the NO-GO gagearrow_forward
- A shaft of 0.5 m in length and 100cm in diameter is to be machined. What operation will you utilize on lathe to bring the specimen of size 50 cm diameter and 0.25 m length?arrow_forwardIn a lathe machine, the maximum torque transmitted by a shaft exceeds the mean torque by 19 %. A power of 2 kW has to be transmitted to another shaft at a speed of 625 rpm. What should be the value of Maximum torque ? The maximum torque transmitted in N-m,arrow_forwardEstimate the manufacturing cost for a simple machined component: a. Compare the costs for manufacturing volumes of 1, 10, 100, 1000, and 10,000 pieces with an intermediate tolerance and surface finish. Explain why there is a great change between 1 and 10 and a small change between 1000 and 10,000 pieces. b. Compare the costs for fit, intermediate, and rough tolerances with a volume of 100 pieces. c. Compare the costs of manufacturing the component out of various materials.arrow_forward
- In a lathe machine, the maximum torque transmitted by a shaft exceeds the mean torque by 11 %. A power of 3 kW has to be transmitted to another shaft at a speed of 625 rpm. What should be the value of Maximum torque ? The maximum torque transmitted in N-m, Answerarrow_forwardچ ۷۲٪۱ ... A Q LIMITS.pdf HOME WORK 1. Calculate the maximum and minimum limits for both the shaft and hole in the following; using the tables for tolerances and name the type of fit obtained: (a) 45H8/d7 (b) 180H7/n6 (c) 120H7/s6 (d) 40G7/h6 (e) 35 C11/h10 2. A schematic representation of basic size and its deviations are given in Fig. below Calculate the following in each case for a shaft of 50 mm basic size: (a) Upper deviation (b) Lower deviation (c) Tolerance (d) Upper limit size (e) Lower limit size +40 +30 +24 +10 0 0 -7 (a) (b) (c) (d) -20 -40 (e) ۸:۰۸ ص الجمعة ٢٧ أيار تم S SE - Sma LANKA COME T DEVEN= P 11 www Larrow_forwardlathe machine has a constant failure rate and a mean time to failure of 10 years. What is the probability that the lathe machine will fail between 5 and 12 years after being installed?arrow_forward
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