EBK MANUFACTURING ENGINEERING & TECHNOL
7th Edition
ISBN: 9780100793439
Author: KALPAKJIAN
Publisher: YUZU
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Chapter 14, Problem 47SDP
Review the sequence of operations in the production of the stepped pin shown in Fig. 14.14. If the conical-upsetting step is not performed, how would the final part be affected?
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In a sheet metal forming press, the shape to be formed is hemispherical cup of radius 15 cm in 2mm thick mild
steel sheet. The force required to deform sheet is 8 kN. The forming hammer should approach job from a distance
of 30 cm. The production rate required is 240 components/hr.
Calculate and suggest the following specifications of the various hydraulic components used:
a. Hydraulic cylinder (bore & length);
b. Pump pressure and flow rate;
c. Electric motor HP considering 75% pump efficiency;
d. Reservoir size; and
e. Size of pump inlet and discharge tubing.
• In a sheet metal forming press the shape to be formed is
hemispherical cup of radius 15 cm in 2mm thick mild steel sheet.
The force required to deform sheet is 8 kN. The forming hammer
should approach job from a distance of 30 cm. The production rate
required is 240 components/hr. Calculate and suggest the
following specifications of the various hydraulic components used:
a) Hydraulic cylinder (bore & length)
b) Pump pressure and flow rate
c) Electric motor HP considering 75% pump efficiency
d) Reservoir size
e) Size of pump inlet and discharge tubing
Chapter 14 Solutions
EBK MANUFACTURING ENGINEERING & TECHNOL
Ch. 14 - What is the difference between cold, warm, and hot...Ch. 14 - Explain the difference between open-die and...Ch. 14 - Explain the difference between fullering, edging,...Ch. 14 - What is flash? What is its function?Ch. 14 - Why is the intermediate shape of a part important...Ch. 14 - Describe the features of a typical forging die.Ch. 14 - Explain what is meant by load limited, energy...Ch. 14 - What type of parts can be produced by rotary...Ch. 14 - Why is hubbing an attractive alternative to...Ch. 14 - What is the difference between piercing and...
Ch. 14 - What is a hammer? What are the different kinds of...Ch. 14 - Why is there barreling in upsetting?Ch. 14 - What are the advantages and disadvantages of...Ch. 14 - Why are draft angles required in forging dies?Ch. 14 - Is a mandrel needed in swaging?Ch. 14 - Describe and explain the factors that influence...Ch. 14 - How can you tell whether a certain part is forged...Ch. 14 - Identify casting design rules, described in...Ch. 14 - Describe the factors involved in precision...Ch. 14 - Why is control of the volume of the blank...Ch. 14 - Why are there so many types of forging machines...Ch. 14 - What are the advantages and limitations of cogging...Ch. 14 - What are the advantages and limitations of using...Ch. 14 - Review Fig. 14.6e and explain why internal draft...Ch. 14 - Comment on your observations regarding the...Ch. 14 - Describe your observations concerning the control...Ch. 14 - Prob. 27QLPCh. 14 - Describe the difficulties involved in defining the...Ch. 14 - Describe the advantages of servo presses for...Ch. 14 - List the general recommendations you would make...Ch. 14 - Which would you recommend, (a) hot forging and...Ch. 14 - Take two solid, cylindrical specimens of equal...Ch. 14 - Calculate the room-temperature forging force for a...Ch. 14 - Using Eq. (14.2), estimate the forging force for...Ch. 14 - To what thickness can a solid cylinder of 1020...Ch. 14 - In Example 14.1, calculate the forging force,...Ch. 14 - Using Eq. (14.1), make a plot of the forging...Ch. 14 - How would you go about estimating the punch force...Ch. 14 - A mechanical press is powered by a 30-hp motor and...Ch. 14 - A solid cylindrical specimen, made of a perfectly...Ch. 14 - Devise an experimental method whereby you can...Ch. 14 - Assume that you represent the forging industry and...Ch. 14 - Figure P14.44 shows a round impression-die forging...Ch. 14 - Prob. 45SDPCh. 14 - Prob. 46SDPCh. 14 - Review the sequence of operations in the...Ch. 14 - Prob. 48SDPCh. 14 - Discuss the possible environmental concerns...Ch. 14 - List the advantages and disadvantages in using a...
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