Question 19Which of the following machine tools is the most suitable one for machining of relatively large batches with several operations?Answers:a. Toolroom latheb. Turret lathec. Vertical turret lathed. Engine lathee. Speed latheConsider the following statements on milling machines1.2.Facing cutters have a tapered or straight shanksEnd mills usually are bolted at the end of a stub arbor3Plain milling cutters are used for profilling as wellAnswers:a. Only 2 and 3 are correctb.Only 1 and 2 are correctc. Only 1 and 3 are conectd. None of them is correcte Only 1 is correctQuestion 21Find the incorrect statement about center type cylindrical grinding. (If you cannot find an incorrect statement among items a, b, c and d then code "e" for this question)Answers: & Workpiece rotatesb. Grinding wheel rotatesUsually workpiece traversesd, Depth of cut is usually determined by infeed of the grinding wheele. All are correctConsider the following statements about finishing operations1. Honing is used to size and finish bored holes, removing common errors left by lapping2- Superfinishing generates very uniform and repeatable smoothness with a slight change in dimension3- In lapping, abrasive stones are rubbed against a surface and remove scratch marks left by besically grindingAnswers a Only 2 and 3 are correctb. Only 1 and 3 are correctOnly 1 is correctd. None of them is correct.4. Only 1 and 2 are correctQuestion 20Question 22

Which of the following machine tools is the most suitable one for machining of relatively large batches with several operations? Answers: a. Toolroom lathe b. Turret lathe c. Vertical turret lathe d. Engine lathe e. Speed lathe

Which of the following machine tools is the most suitable one for machining of relatively large batches with several operations? Answers: a. Toolroom lathe b. Turret lathe c. Vertical turret lathe d. Engine lathe e. Speed lathe

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

See similar textbooks

Similar questions

Match column A with Column B (Return this page with your answer sheet) No Column A These are machine tools in which components are Column B No Multi-Spindle A machined. Automatics Several tools are used so that the turning is Broaching B completed in one cycle. 3 Designed for high production rate machining of screws and similar threaded parts, Job Production 4 These lathes have four to eight spindles arranged Flow Production in a circle on a large drum. This operation is like shaping with multiple teeth E Batch Production and is used to machine internal and external surfaces such as holes of circular. 6 The workpiece is supported on its OD and rotated F Auto Lathe around an axis created by this reference surface. The workpiece is free to shift, and if the support surface is the one being ground, the axis of rotation also shifts. Manufacturing of single, or few products to a Electrical copying System G customer's individual specification. 8 Parts are manufactured in fixed quantities H…
Question 1. The shaping machine is used to machine flat metal surfaces especially where a large amount of metal has to be removed. The shaper machine is a reciprocating type of machine basically used for producing the horizontal, vertical or flat surfaces. The shaper holds the single point cutting tool in ram and workpiece is fixed in the table. A shaper mechanism is designed to give a slow cutting stroke and a quick return to a blade attached to the slider at C. Determine the velocity of the slider block C at the instant 0= 60°, if link AB is rotating at 4 rad/s. 125 mm C 45 B WAR =4 rad/s 300 mm
INo Spac.Heading Heading 2 Title Subtitle Subtle Em... Emphasis Intense E. Intense Q. Subtle Ref.. = Strong Quote Paragraph Styles 3 6. . .7 I The mill project will have a vertical miller (with a set of collets). There will be several end mills 2", 5/8", and 7/8" in diameter. The same drill bits that were available for the lathe project will be available for the miller project ((sizes 1/16"to ½" diameter), as will the measuring tools (micrometer and a Vernier caliper). There will also be thread form tools 10-32 and "-20. 2.108 1500 1.750 Ø 0.875 #7 Drill Thru to 7/8 Dia. -3/8 Dia. x .25 Deep R 0.467 9.5' 0.625 1.500 REF 0.937 0.867 0.617 0.937 31 0.305 0.750 0.250 0.121 t0.541 1.438 3x 0 0.180 Thru Threadform 10-32 UNFX.50 Deep 1.063 2.250 0.219 2.750 All Units in Inches Tolerance on Dimensions X or Fractional +/-1/32" XX +/- .01 „XXX +/- .005 Please Describe in detail all the steps in chronological order and dimensions to machine this piece A Focus
Expert 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 5
3) Turning: A turning operation is to be adopted under the following machining conditions: Cutting speed: V = 75 m/min Feed rate: f= 0.25 mm/rev Depth of cut: a = 1.75 mm External workpiece diameter: Do = 50 mm Determine: a. The final workpiece diameter b. The rotational speed of the workpiece c. The tool feed rate expressed in m/min d. The material removal rate mm³/min e. The specific energy of the material assuming that the measured cutting force is F= 750 N. Knowing the specific energy, which of materials from the table below could the workpiece be composed? Approximate Specific-Energy Requirements in Cutting Operations SPECIFIC ENERGY* MATERIAL Aluminum alloys Cast irons Copper alloys High-temperature alloys W-s/mm³ 0.4-1.1 1.6-5.5 1.4-3.3 3.3-8.5 0.4-0.6 4.9-6.8 3.8-9.6 3.0-5.2 2.7-9.3 3.0-4.1 hp-min/in³ 0.15-0.4 0.6-2.0 0.5-1.2 1.2-3.1 0.15-0.2 1.8-2.5 1.1-3.5 1.1-1.9 1.0-3.4 1.1-1.5 Magnesium alloys Nickel alloys Refractory alloys Stainless steels Steels Titanium alloys * At…
18. are used for clamping irregularly shaped workpieces. A. Three-jaw chucks C. Mandrels B. Face plates D. Follow rests 19. In bending operation of a piece of flat metal sheet. The final bend angle after springback is than the angle to which the part was bent. A. larger B. smaller C. not sure 20. Machining is a general term describing a group of processes that consist of the of material and modification of the surfaces of a workpiece after it has been produced by various methods. A. addition B. deformation C. changing D. removal
1. In Figure 1, the feed is 0.006 in. per tooth. The cutter is rotating at an rpm that will produce the desired surface cutting speed of 125 fpm. The cutter diameter is 3 in. The depth of cut is 0.15 in and width of the cut is 2 in. The block is 5 in. wide and 12in long. Determine a. The feed, in inches per minute. b. Approach distance for this type of milling c. Cutting time to make one pass across the surface d. If an additional approach distance of 0.5 in is provided at the beginning of pass and an over travel distance is provided at the end of pass equal to the cutter radius plus 0.5 in, what is the duration of the feed motion? Speesi neten Cite Citter praiten t staof cit Solld hellcal plain milling cuttar Wout Helical teeth TUp w Figure: 01
Question 1 By using a labelled diagram describe the function of a horizontal milling machine. Describe two methods of producing screw threads in the workshop. Describe the various tool life criteria that are used to estimate the life of a cutting tool. Describe the various milling cutters that are used on a vertical and horizontal milling machine and state for what purpose they are used. Describe 2 methods of producing tapers on a lathe machine. Your answers to each question should be supported by suitable diagrams for clarity.
Answer the following questions by circling True or False. 1. Capstan and turret lathes utilise many tools simultaneously to improve the productivity. ... 2. Lead screws in the machine tools can convert linear motion to rotary motion. 3. Automatic lathes are used for medium batch production. 4. Arithmetic progression is preferred for higher spindle speeds. 5. Tool layouts can be converted into a cam profile that is used for the control of the tool. () () 6. Higher the rake angle, less the cutting forces. 7. A very large clearance angle increases the strength of the tool tip. 8. The continuous chip causes poor surface finish and low tool life. 9. Ceramics are the hardest tool materials in the world. 10. The smaller the cutting ratio, the larger the cutting deformation. 11. A shaper can be used for maching flat surfaces in horizontal and angular directions. 12. During the return stroke of the shaper, the cutting tool will simply be sliding... 13. The cutting speed of the hydraulic shaper…
Name the milling machine operation in which the milling cutter axis is perpendicular to the flat surface of the workpiece surface to be machined. Face milling Form milling Angular milling Slab milling
Answer the following questions by circling True or False. 5. Tool layouts can be converted into a cam profile that is used for the control of the tool. .... () 6. Higher the rake angle, less the cutting forces. 7. A very large clearance angle increases the strength of the tool tip. 8. The continuous chip causes poor surface finish and low tool life. 9. Ceramics are the hardest tool materials in the world. 10. The smaller the cutting ratio, the larger the cutting deformation. 11. A shaper can be used for maching flat surfaces in horizontal and angular directions. 12. During the return stroke of the shaper, the cutting tool will simply be sliding... 13. The cutting speed of the hydraulic shaper changes throughout most of the cutting stroke. 14. Arbour-mounted cutters are used in vertical axis machines to generate flat surfaces... 15. Dividing head is an important attachment that is used to divide the periphery of the workpiece into a number of divisions to machine surfaces.. () () ()
ME 408 - Machine Shop Theory and Practice How do you center a workpiece in a lathe machine with a four-jaw independent chuck?