DeGarmo's Materials and Processes in Manufacturing
12th Edition
ISBN: 9781118987674
Author: J. T. Black, Ronald A. Kohser
Publisher: WILEY
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Chapter 24, Problem 11RQ
What is the advantage of a helical-tooth cutter over a straight-tooth cutter for slab milling?
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A shaft groove with a length of 250 mm and a depth of 12 mm is cut by a 20 mm diameter slot cutter. What is the processing time if the cutting depth is to be 4 mm. The feed is 25 mm/min. Over run is 1/2 the cutter diameter.
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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- (d) List down three types of milling cutters used in machining process and sketch their cutting process. (e) Find the cutting speed of a 15 mm diameter bar being turned with a spindle of 955 rev/min.arrow_forwardWhat is the feed speed (mm/min) of an end milling cutter if it mills a distance of 300 mm in ten minutes? What is the feed per tooth if it is rotating at 800 rpm?arrow_forwardAn 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_forward
- Nonearrow_forwardE Expert Q&A 1. Shaper (#X) Machine function and design requirements: The main function of this machine is to make surface more smooth; The required movements are: Reciprocating movement of planer knife and feed movement of the bow. It is required that the cutting speed is uniform, while the quirkily return is included. The basic data is: principal axis rotation speed is 60 r/min, the max length is less than 450 mm, the distance between working surface and the floor is 800 mm. Travel speed ratio co-efficient is 1.5, allowable pressure angle 15°, cutting quantity is 0.1~0.5 mm. Requirements: 1. Freedom calculations; 2. Force analysis; 3. Make this machine, and display; please give a solution with given condition.arrow_forwardPlease solve fast its urgentarrow_forward
- 1. Differentiate Die Sinker, Wire EDM and Hole Drilling EDM ?arrow_forwardWhats the answer for this please ?arrow_forwardTurning Operation In a production turning operation, the foreman has decreed that a single pass must be completed on the cylindrical workpiece in 4.8 min. The piece is 400 mm long and 150 mm in diameter. Using a feed = 0.43 mm/rev and a depth of cut = 4.0 mm, what cutting speed must be used to meet this machining time requirement? Hint: Re-arrange the Tm equation to find v in m/min Tm= T.DO.L v.f 1.522arrow_forward
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