Degarmo's Materials And Processes In Manufacturing
13th Edition
ISBN: 9781119492825
Author: Black, J. Temple, Kohser, Ronald A., Author.
Publisher: Wiley,
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Textbook Question
Chapter 24, Problem 2RQ
How is the feed per tooth related to the feed rate of the table in in/sec?
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Identify the true statement from the following
a. Unit of cutting speed in millimetre per minute
b. Unit of feed is in meter per tooth
c. Unit of cutting speed is in meter per second d. Unit of feed is millimetre per tooth
1.) On a lathe, a cylindrical work piece of 100mm diameter is being turned. The RPM is 100. The cutting speed is _________?(m/min)
How long will it take to mill a ¾ inch by 2 inches long keyway in a 3 inches diameter shafting with a 24 tooth cutter turning at 100 rpm and 0.005 inch feed/tooth?
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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- A o 20 mm through hole is to be drilled in a 30 mm thick plate using a double fluted, 120° lip angle drill The drill tip is at a distance of 3 mm from the plate surface when cutting is started and an over travel of 2 mm is recommended as a margin to ensure drilling through the full thickness of the plate. If the drill rotates at 500 rev/min and the feed per tooth is 0.01 mm,find the machining time of the operation.arrow_forwardA 0.4-inch diameter bit is used in a vertical or vertical drill that operates at 300 rpm. If the feed is 0.005 in / rev, what is the MRR? What is the MRR if the drill diameter is doubled? What is the power required in the drill if the material is an annealed AISI 1080?arrow_forwardHow do grooving and cutoff speeds compare to turning speeds?arrow_forward
- If a fairing operation is executed at a rotational speed of 40.0 rev / min, the feed is 0.015 in / rev and the depth of cut is 0.180 in, it determines: a) cutting time to complete the fairing operation; and b) the cutting speed; and c) The speed of metal removal at the beginning and end of the cut d) The power dissipated.arrow_forwardA drilling operation is to be performed with a 12.7 mm diameter twist drill in a steelwork part. The hole is a blind hole at a depth of 60 mm and the point angle is 118 ̊. The cutting speed is 25 m/min and the feed is 0.3 mm/rev. determine The cutting time to complete the drilling operation,arrow_forwardA part to be turned in an engine lathe must have asurface finish of 1.6 mm. The part is made of a freemachining aluminum alloy. Cutting speed = 150 m/min,and depth of cut = 4.0 mm. The nose radius on the tool =0.75 mm. Determine the feed that will achieve thespecified surface finish.arrow_forward
- Identify and explain the method of milling process in which the stresses on the teeth is maximum at the end of the cut with neat diagram.arrow_forwardUsing the formula (below), calculate the revolutions per minute (rpm) a drill press spindle should rotate using a Ø1⁄2 HSS twist drill if the cutting speed will be 90 surface feet per minute, SPM?N~[4xV]÷DN = _____________________________________________ RPM’sarrow_forwardA two-spindle drill cuts two holes at the same time, one 1/2 inch and one 3/4 inch. The workpiece is 1.0 inches thick. Both drills have point angles of 118 degrees and the cutting speed for the material is 300 ft/min. The rotational speed of each drill can be set individually but the feed rate for both holes must be set to the same value because they move together into the material. The feed rate is set so that the total metal removal rate of both drills combined does not exceed 1.50 in3/min. Determine (a) maximum feed rate (in/min) that can be used, (b) individual feeds (in/rev) for each hole, and (c) cutting time for the operation.arrow_forward
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