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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Chapter 27, Problem 2P
The pitch of the teeth on a simple surface broach can be determined by equation 27.1. If a broach is to remove 0.25 in. of material from a gray iron casting that is 3 in. wide and 17-75 in. long, and if each tooth has a rise per tooth of 0.004 in., what will be the length of the roughing section of the broach?
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Chapter 27 Solutions
Degarmo's Materials And Processes In Manufacturing
Ch. 27 - Why is sawing one of the most efficient of the...Ch. 27 - Explain why tooth spacing (pitch) is important in...Ch. 27 - What is the tooth gullet used for on a saw blade?Ch. 27 - Explain what is meant by the set of the teeth on a...Ch. 27 - How is tooth set related to saw kerf?Ch. 27 - Why can a bandsaw blade not be hardened throughout...Ch. 27 - What are the advantages of using circular saws?Ch. 27 - Why have bandsawing machines largely replaced...Ch. 27 - Explain how the hole in Figure 27.7 is made on a...Ch. 27 - How would you calculate or estimate Tm for a...
Ch. 27 - What is the disadvantage of using gravity to feed...Ch. 27 - What is unique about the broaching process...Ch. 27 - Can a thick saw blade be used as a broach? Why or...Ch. 27 - Broaching machines are simpler in a basic design...Ch. 27 - Why is broaching particularly well-suited for mass...Ch. 27 - In designing a broach, what would be the first...Ch. 27 - Why is it necessary to relate the design of a...Ch. 27 - What two methods can be utilized to reduce the...Ch. 27 - For a given job, how would a broach having...Ch. 27 - Why are the pitch and radius of the gullet between...Ch. 27 - Why are broaching speeds usually relatively low,...Ch. 27 - What are the advantages of shell-type broach...Ch. 27 - Why are most broaches made from alloy or...Ch. 27 - What are the advantages of TiN-coated broaching...Ch. 27 - For mass-production operations, which process is...Ch. 27 - What is the difference between the roughing teeth...Ch. 27 - The sides of a square, blind hole must be machined...Ch. 27 - The interior, flat surfaces of socket wrenches,...Ch. 27 - Prob. 29RQCh. 27 - What are some ways to improve the efficiency of a...Ch. 27 - To what extent is filing different from sawing?Ch. 27 - Prob. 32RQCh. 27 - Prob. 33RQCh. 27 - Prob. 34RQCh. 27 - A surface 12 in. long is to be machined with a...Ch. 27 - The pitch of the teeth on a simple surface broach...Ch. 27 - Estimate the (approximate maximum) horsepower...Ch. 27 - Estimate the approximate force acting in the...Ch. 27 - In cutting a 6-in.-long slot in a piece of AISI...Ch. 27 - The strength of a pull broach is determined by its...Ch. 27 - Suppose you want to shape a block of metal 7 in....Ch. 27 - Could you have saved any time in Problem 7 by...Ch. 27 - Derive the equation for shaping cutting speed.Ch. 27 - How many strokes per minute would be required to...Ch. 27 - How much time would be required to shape a flat...Ch. 27 - What is the metal removal rate in Problem 11 if...Ch. 27 - Suppose you decide to mill the flat surface...Ch. 27 - A planer has a 10-hp motor, and 75% of the motor...
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- QUESTION 5 Determine the spindle speed (rpm), the feed rate (in/min) and the cutting power required for turning a 1º diameter copper rod with a depth of cut of 0.1" using a cemented carbide tool. O N=287 RPM, F-25.8 in/min, P=9.7 hp ON=2866 RPM, F=258 in/min, P=97 hp ON=1146 RPM, F-25.8 in/min, P=97 hp O N= 11460 RPM, F-340 in/min, P=130 hp ON= 1146 RPM, F-34 inimin, P= 13 hp ON= 115 RPM, F-3.4 in/min, P=1.3 hp QUESTION 6 It is required to face mill an aluminum block to size it down from 2" to 1.5" thick using a 3" diameter 2-toothed carbide cutting tool. The block is 6.0" wide and 6" long. The entire tool diameter engages the workpiece during the cut. Calculate the recommended spindle speed in revolutions per minute, feed per tooth, and cutting power required. O N=1529 RPM, f= 0.026 in/rev/tooth, P = 36 hp O N-3820 RPM, f= 26 in/revitooth, P=27 hp O N-3820 RPM, f= 0.052 in/rew/tooth, P=27 hp ON-382 RPM, F= 0.026 in/revitooth, P = 0.027 hp O N-3820 RPM, f= 0.052 in/rev/tooth, P=2.7 hp…arrow_forwardHandwritten solution recommended. (1) A twist drill bit is used to drill a hole of diameter 2.0 at 4578.1 rpm at a feed rate of 2.5 in/min. Calculate the MRR in in^3/min. Take "pi" = 3.14. Round your answer to the nearest tenth.arrow_forwardWhat is the cutting speed of turning in the unit of m/min, when main axis spindle speed is 2,409 rpm and external diameter is 86mm ? Answer in 2 decimal points. Calculate the theoretical spindle rotational speed in rpm required to drill a 1 mm hole in copper using high speed steel drill. The recommende cutting speed is as following. The thickness of the copper plate is 24. (Leave the answer in numerical value, no need to key in 'rpm') Typical cutting speeds (m/min) High speed steel Material Tungsten carbide Aluminum 100 500 60 330 Copper Hard brass 45 230 Bronze 35 180 Mild steel 28 250 Cast iron 20 160arrow_forward
- Please solve it correctly , Don't Use Ai tool. (1) A twist drill bit is used to drill a hole of diameter 2.0 at 4578.1 rpm at a feed rate of 2.5 in/min. Calculate the MRR in in^3/min. Take "pi" = 3.14. Round your answer to the nearest tenth.arrow_forwardWrite TRUE is the statement/s is True. If the statement is false, identify the word/s that makes the sentence incorrect and write its corresponding correct answer. 16. since the thickness of chips is always greater than the depth of cut, chip compression ratio is àways less than 1.0. 17. Inserts have multiple cutting points. 18. Free Machining steels are non-ferrous metals which contain sulfur and phosphorus.arrow_forward1. What type of milling machine can be used to make the groove in the shaft?2. The diameter of the shaft is d = 25 mm. Find the width and depth of the groove (use the table below).3. Find the diameter of the tool.4. Find the speed of rotation (RPM N) of the tool during roughing and finishing.The material of the shaft is Stainless Steel (C45) with CARBIDE TOOL.arrow_forward
- A drilling operation is performed to create a through hole on a steel plate that is 20 mm thick. Cutting speed = 0.4 m/s, and feed = 0.20 mm/rev. The 18-mm-diameter twist drill has a point angle of 120°. Determine the following once the drill reaches full diameter: a. the machining time and, b. the metal removal rate Equation used Tm TD₂L fvarrow_forwardQuestion 3. A cemented carbide tool is used to turn a part with length = 18.0 in and diameter = 3.0 in. The parameters in the Taylor equation are: n= 0.27 and C = 1200. The rate for the operator and machine tool = $33.00/hr, and the tooling cost per cutting edge = $2.00. It takes 3.0 min to load and unload the workpart and 1.50 min to change tools. The feed = 0.013 in/rev. Determine: a) Cutting speed for maximum production rate, b) Tool life in min of cutting, and c) Cycle time and cost per unit of product.arrow_forwardDont keep asking for a clear pic. This is what i have. And the data is conplete. Solve it using given data itself.arrow_forward
- solve correctlyarrow_forwardsolvearrow_forward22 - Which of the following information about broaching is wrong?(Broşlama ile ilgili aşağıd The heights of the front teeth are made sccording to the exact size of the surfsce to be process ed. (Öndeki diş lerin yükseklik leri, iş lenecek yüzeyin tam boyutuna göre yapılmsktadır) Brooches (cutting toob) can be in the form of a oy lindrical ber or a prismstic bar called a arochet (Broş lar kesici tak mlar) silindirik çubuk veya tığ da denilen prizmatik çubuk şelinde olabilirler) The height of the teeth inaresses fom the head to the end of the brooch (Diş lerin yük seklik leri broşun baş kısmından s onuna doğru büyümek tedir) The rough and fine stock removal process is completed in one pess, resulting in a very s mooth and high quality surface. D) (Bir pes oda kaba ve inoe talaş k aldırma iş lemi tamamlanmakta ve çok düzgün ve yüks ek kalitede bir yüzey meydana gelmektedir) Broaching method ensures chespness, s peed and quality. (Broş lama yöntemi ucuz luk, sūrst ve kalite temin eder)arrow_forward
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