DeGarmo's Materials and Processes in Manufacturing
12th Edition
ISBN: 9781118987674
Author: J. T. Black, Ronald A. Kohser
Publisher: WILEY
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Textbook Question
Chapter 24, Problem 9RQ
What parameters do you need to specify in order to calculate MRR in milling?
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Chapter 24 Solutions
DeGarmo's Materials and Processes in Manufacturing
Ch. 24 - Suppose that you wanted to machine cast iron with...Ch. 24 - How is the feed per tooth related to the feed rate...Ch. 24 - Why must the number of teeth on the cutter be...Ch. 24 - Why is the question of up or down milling more...Ch. 24 - For producing flat surfaces in mass-production...Ch. 24 - Milling has a higher metal removal rate than...Ch. 24 - Which type of milling (up or down) is being done...Ch. 24 - Why does down milling dull the cutter more rapidly...Ch. 24 - What parameters do you need to specify in order to...Ch. 24 - In Figure 24.2b, the tool material is carbide....
Ch. 24 - What is the advantage of a helical-tooth cutter...Ch. 24 - What would the cutting force diagram for Fc look...Ch. 24 - Could the stub arbor-mounted face mill shown in...Ch. 24 - In a typical solid arbor milling cutter shown in...Ch. 24 - Make some sketches to show how you would you set...Ch. 24 - Make some sketches to show how you would set up a...Ch. 24 - Explain how controlled movements of the work m...Ch. 24 - Prob. 18RQCh. 24 - What is the purpose of the hole-circle plate on a...Ch. 24 - You have selected a feed per tooth and a cutting...Ch. 24 - How much time will be required for a milling...Ch. 24 - If the depth of cut is 0.35 in., what is the metal...Ch. 24 - Prob. 4PCh. 24 - Calculate the spindle rpm and table feed (ipm) for...Ch. 24 - A gray cast iron surface 6 in. wide and 18 in....Ch. 24 - Prob. 7PCh. 24 - In Figure 24.12, the feed is 0.006 in. per tooth....Ch. 24 - Suppose you want to do the job described in...Ch. 24 - The Bridgeport vertical-spindle milling machine is...Ch. 24 - The KC Machine Works, which does job shop...
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- Consider a profile milling operation, where the initial (stock) geometry has (X,Y,Z) dimensions of 100 mm x 75 mm x 50 mm. The target part has dimensions of 95 mm x 70 mm x 50 mm. The target part is located in the centre of the stock part, i.e. the stock to be removed from all sides is equal. The operation has a cutting time of 1 minute. The tool axis is along the Z direction and the tool diameter is 12 mm having 6 cutting edges. The takes place at 54m/min feed rate of 0.2 mm/rev/tooth. Calculate the axial depth of cut ? process at aarrow_forwardd) A face milling operation is used to machine 6.0 mm from the top surface of a rectangular piece of aluminum 300 mm long by 125 mm wide in a single pass. The cutter has four teeth (cemented carbide inserts) and is 150 mm in diameter. The cutting speed = 2.8 m/s, and chipload = 0.27 mm/tooth. Assuming that the cutter enters the workpiece from its short side and follows a path that is centered over the workpiece, determine: i) the actual machining time to make the pass across the surface and, ii) the maximum metal removal rate during cutting.arrow_forwardBriefly explain peripheral milling and its types with the help of diagrams?arrow_forward
- An end milling operation is carried out along a straight line path that is 325 mm long. The cut is in a direction parallel to the x‑axis on a CNC machining center. Cutting speed = 30 m/min, and chip load = 0.06 mm. The end milling cutter has two teeth and its diameter = 16.0 mm. The x‑axis uses a DC servomotor connected directly to a leadscrew whose pitch = 6.0 mm. The optical encoder emits 400 pulses per revolution of the screw. Determine (a) feed rate during the cut, (b) rotational speed of the motor, and (c) pulse rate of the encoder at the feed rate indicated.arrow_forwardWhat is a benefit of using a DRO instead of micrometer collars for positioning on a vertical milling machine?arrow_forwardDepth-of-cut range for surface grinding is: a. 0.010"0.100" b. 0.0001"0.0002" c. 0.0001"0.003" d. 0.00001"0.00005"arrow_forward
- 4. Explain the differences between the up milling and down milling?arrow_forwardWhat are Commercial-Scale and Small-Scale Milling Systems? Give examples for each.arrow_forwardExpert Q&A Done The top surface of a rectangular workpart is machined using a peripheral milling operation. The workpart is 735 mm long by 50 mm wide by 95 mm thick. The milling cutter, which is 60 mm in diameter and has five teeth, overhangs the width of the part equally on both sides. Cutting speed = 80 m/min, chip load = 0.30 mm/tooth, and depth of cut = 7.5 mm. (a) Determine the time required to make one pass across the surface, given that the setup and machine settings provide an approach distance of 5 mm before actual cutting begins and an overtravel distance of 25 mm after 1.2 9. 20 65 73 actual cutting has finished v in seconds. (b) What is the maximum material 3.9 239 removal rate during the cut v in mm3/sec? 0.127 5arrow_forward
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