Which of the following statements is true for climb milling? O used for milling small and intricate shapes O known as "speed" milling O used for milling workpiece with a rough surface O largest chips at the tool exit lowest milling forces upon tool entry Question 2 Broaching processes are least suitable for: small material removal with simple geometries O large material removal with large energy requirements large material removal with complex geometries large material removal with simple geometries all of the above

Which of the following statements is true for climb milling? O used for milling small and intricate shapes O known as "speed" milling O used for milling workpiece with a rough surface O largest chips at the tool exit lowest milling forces upon tool entry Question 2 Broaching processes are least suitable for: small material removal with simple geometries O large material removal with large energy requirements large material removal with complex geometries large material removal with simple geometries all of the above

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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In the horizontal milling machine, plain milling is accomplished on the top surface of a rectangular workpiece with dimensions (length 600 mm and width 50 mm). The cutter milling protrudes on both sides of the part. A cutter diameter is 60 mm; the number of teeth is 6. Cutting condition are 60 m/min, 0.25 mm/tooth, and 6.5 mm. Determine :- (a) machining time of the operation. (b) material removal rate during the cut.
A slab milling operation is performed on the top surface of a tool-steel workpiece 450 mm long by 7.5 cm wide. The helical milling cutter, which has an 80 mm diameter and seven teeth, is set up to overhang the width of the part on both sides. Cutting speed is 4000 mm/min, feed is 0.015 cm/tooth, and depth of cut = 0.60 cm. Determine (a) the actual machining time to make one pass across the surface and (b) the maximum metal removal rate during the cut. (c) If an additional approach distance of 0.05 m is added at the beginning of the pass, and an overtravel distance at the end of the pass equal to the cutter radius plus 0.0115 cm, what is the duration of the feed motion
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a. What is the ideal mechanical advantage of this system? The inclined plane dimensions are 7.2 meters length and 1.8 meters height.b. What effort force is required to move the 600N create? c. In practice, you need to supply an effort force of 75 N to lift the crate. What is the efficiency?d. How could you redesign this compound machine so that the effort force needed was 50 N in practice? Assume the efficiency is your response from part C no matter what changes you make. Be specific with the changes you propose (if you add pulleys state how many, if you change the inclined plane dimensions state the new dimensions, etc.).
In a turning operation of stainless-steel work part having shear strength = 378 MPa and tensile strength = 420 MPa, a coated carbide tool with a rake angle of 5 degrees is used to reduce its diameter from 100 mm to 93.2 mm with a cutting ratio of 0.45. During this process, a cutting speed of 2.4 m/s and feed of 0.24 mm/rev is used. Using the orthogonal model to approximate the turning process, how much power (W) will the lathe draw in performing this operation if its mechanical efficiency = 90%.
Why is ideal mechanical advantage used when calculating the mechanical advantage of a compound machine? How is the actual mechanical advantage determined for a compound machine?
1.) A.) A cutting operation is performed on a piece of metal. The rake angle of the tool, α, is eight degrees. The tool penetrates the work to a depth of 8mm. The chips generated from this cut are 20mm thick. Calculate the shear plane angle, Φ, in the orthogonal model for this operation. Give your answer in degrees B.) For the same cutting operation, the cutting and thrust forces are measured. The cutting force is measured as 1600N, and the thrust force is measured as 1300N. The width of the cut is 4mm. What is the shear stress applied by the tool? Give your answer in MPa.
What is the difference between the actual mechanical advantage and the theoretical mechanical advantage of any machine? Which of them is greater?
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Slots on the outer surface of work piece. (O ocrinding process. (O Planning process. (O Drilling process. Smooth finishing on surfaces of work piece. (O Turning process. O Milling process. O Grinding process.