Manufacturing Engineering & Technology
7th Edition
ISBN: 9780133128741
Author: Serope Kalpakjian, Steven Schmid
Publisher: Prentice Hall
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Chapter 16, Problem 3RQ
To determine
Explain the difference between punching and blanking.
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Explain the difference between deep drawing and redrawing.
A blanking operation is to be performed on 2.0 mm thick
cold-rolled steel (half hard). The part is circular with diameter 75.0 mm. Calculate the appropriate punch and die sizes for this operation. (Take Allowance coefficient A. = 0.075)
please answer to both of these parts of the question, thanks
(a) Explain the advantage of corner radii of punch and die in Sheet Metal Drawing Process.
(b) Explain the disadvantages of Tube Drawing process in which mandrel is not used.
Chapter 16 Solutions
Manufacturing Engineering & Technology
Ch. 16 - How does sheet-metal forming differ from rolling,...Ch. 16 - What causes burrs? How can they be reduced or...Ch. 16 - Prob. 3RQCh. 16 - Describe the difference between compound,...Ch. 16 - Describe the characteristics of sheet metals that...Ch. 16 - Describe the features of forming-limit diagrams...Ch. 16 - List the properties of materials that influence...Ch. 16 - Give one specific application for each of the...Ch. 16 - Why do tubes buckle when bent? What is the effect...Ch. 16 - Define normal anisotropy, and explain why it is...
Ch. 16 - Describe earing and why it occurs.Ch. 16 - What are the advantages of rubber forming? Which...Ch. 16 - Explain the difference between deep drawing and...Ch. 16 - How is roll forming fundamentally different from...Ch. 16 - What is nesting? What is its significance?Ch. 16 - Describe the differences between compound,...Ch. 16 - What is microforming?Ch. 16 - Explain the advantages of superplastic forming.Ch. 16 - What is hot stamping? For what materials is it...Ch. 16 - What is springback? What is negative springback?Ch. 16 - Explain the differences that you have observed...Ch. 16 - Take any three topics from Chapter 2, and, with...Ch. 16 - Do the same as for Problem 16.22, but for Chapter...Ch. 16 - Identify the material and process variables that...Ch. 16 - Explain why springback in bending depends on yield...Ch. 16 - Explain why cupping tests may not predict well the...Ch. 16 - Identify the factors that influence the...Ch. 16 - Why are the beads in Fig. 16.36b placed in those...Ch. 16 - A general rule for dimensional relationships for...Ch. 16 - Section 16.2 stated that the punch stripping force...Ch. 16 - Is it possible to have ironing take place in an...Ch. 16 - Note the roughness of the periphery of the flanged...Ch. 16 - What recommendations would you make in order to...Ch. 16 - It has been stated that the quality of the sheared...Ch. 16 - Give several specific examples from this chapter...Ch. 16 - As you can see, some of the operations described...Ch. 16 - Through changes in clamping or die design, it is...Ch. 16 - How would you produce the part shown in Fig....Ch. 16 - It has been stated that the thicker the sheet...Ch. 16 - Prob. 41QTPCh. 16 - Calculate the value of R in Problem 16.41. Will...Ch. 16 - Estimate the limiting drawing ratio for the...Ch. 16 - Using Eq. (16.15) and the K value for TNT, plot...Ch. 16 - Section 16.5 states that the k values in bend...Ch. 16 - For explosive forming, calculate the peak pressure...Ch. 16 - Measure the respective areas of the solid outlines...Ch. 16 - Plot Eq. (16.6) in terms of the elastic modulus,...Ch. 16 - What is the minimum bend radius for a 1.0-mm-thick...Ch. 16 - Survey the technical literature and explain the...Ch. 16 - Using the data in Table 16.3 and referring to Eq....Ch. 16 - What is the force required to punch a square hole...Ch. 16 - In Case Study 16.2, it was stated that the reason...Ch. 16 - A cup is being drawn from a sheet metal that has a...Ch. 16 - Prob. 55QTPCh. 16 - Figure P16.57 shows a parabolic profile that will...Ch. 16 - Prob. 59SDPCh. 16 - Consider several shapes to be blanked from a large...Ch. 16 - Prob. 61SDPCh. 16 - Many axisymmetric missile bodies are made by...Ch. 16 - Metal cans are either two-piece (in which the...Ch. 16 - The design shown in Fig. P16.65 is proposed for a...Ch. 16 - Suggest consumer-product designs that could...Ch. 16 - How would you produce the part shown in Fig. 16.44...Ch. 16 - Using a ball-peen hammer, strike the surface of...Ch. 16 - Inspect a common paper punch and observe the shape...Ch. 16 - Obtain an aluminum beverage can and slit it in...Ch. 16 - Prob. 71SDPCh. 16 - Prob. 73SDPCh. 16 - On the basis of experiments, it has been suggested...Ch. 16 - Design a box that will contain a 4-in. 6-in. ...Ch. 16 - Repeat Problem 16.77, but design the box from a...
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- Explain the principles of metal rolling in not more than 10 sentences.arrow_forwardA blank workpiece with 200 mm diameter is to be blanked from 3.2- mm-thick half-hard stainless steel (ultimate tensile strength of 650 MPa). Find (a) the diameters of blank die and punch, and (b) blanking force.arrow_forwardDescribe with the aid of a neat sketches two forging processes and briefly discuss their relative merits and limitations:arrow_forward
- 3) What are the reasons for developing forming limit diagrams (FLD)? Explain its use.arrow_forward4) What is forging? One way to classify forging operations is by the degree to which the work is constrained in the die. By this classification, explain the three basic types. (with using figures also).arrow_forwardWhat are the main advantages of forging and explain forgeability.arrow_forward
- A blanking operation is to be performed on 3.0 mm thick cold-rolled steel (half hard). The part is circular with diameter = 80.0 mm. Determine the appropriate punch and die sizes for this operation.arrow_forwardDescribe the advantages of servo punch-presses for forging and stamping sheet metal parts.arrow_forwardFind the process tolerance for blanking o 40 piece from 2 mm thick mild steel Sheet. (Take minimum die clearance of 2% per side)arrow_forward
- What are the three most common grips for drawing? Explain each type of grip, along with their advantages and shortcomings in different drawings. Provide some examples.arrow_forwardCorrect and complete solution please don't copyarrow_forwardExplain briefly the relationship between the load-stroke in open die forging as illustrated in the figures bellow. Take in consideration the effect of coefficient of friction.arrow_forward
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