Rr321403-advanced-manufacturing-technology

Set No. 1

Code No: RR321403

III B.Tech II Semester Supplimentary Examinations, Aug/Sep 2008 ADVANCED MANUFACTURING TECHNOLOGY (Mechatronics) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. (a) Enumerate the differences between orthogonal cutting and oblique cutting. (b) Write a brief note on tool signature.

[6+10]

2. (a) Describe the different attachments used for performing different operations on lathe. (b) What is the function of lead screw in thread cutting operation? With the help of neat sketch explain how it achieves this function. [10+6] 3. (a) How are the tools held in a shaper? Explain briefly. (b) Describe the operation of cutting T - slots on a planer.

[8+8]

4. (a) What are the operations that can be performed on drilling machines? Explain. (b) Explain briefly the significance of the following parts in a twist drill i. ii. iii. iv.

Margin Point Flutes Lips

[8+8]

5. Explain the following with the help of neat sketches. (a) Key way milling (b) Gang milling.

[8+8]

6. (a) What is cylindrical grinding and what are its advantages? (b) In order to have right type of grinding wheel, one should check many points. What are those points? [8+8] 7. (a) Define tools, jigs and fixtures. What are their applications? (b) Distinguish between simple, compound and differential indexing.

[8+8]

8. (a) Explain the various limitations and industrial applications of Electro Chemical Machining. (b) Enumerate the advantages and limitations of Laser Beam Machining over other non-traditional machining processes. [8+8] ⋆⋆⋆⋆⋆

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Set No. 2

Code No: RR321403

III B.Tech II Semester Supplimentary Examinations, Aug/Sep 2008 ADVANCED MANUFACTURING TECHNOLOGY (Mechatronics) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. (a) Discuss the desirable factors that improve the efficiency of metal cutting. (b) Discuss the significance of various rake angles in metal cutting.

[8+8]

2. (a) Discuss the classification of lathes that cover most of the lathes used today. (b) List and explain in detail commonly used attachments on lathe

[8+8]

3. (a) Describe the operation of cutting square holes on shaper. (b) Explain the principle parts of a planer.

[6+10]

4. (a) What are the various types of drilling machines? Explain their relative merits and demerits. (b) Distinguish between boring and drilling.

[10+6]

5. Explain the following with the help of neat sketches. (a) Key way milling (b) Gang milling.

[8+8]

6. (a) What is the classification method that could be used for grinding machines? Give the applications of each variety of grinding machines. (b) Why is a soft wheel used on hard materials and vice versa? Explain briefly. [10+6] 7. (a) What is “Degree of movement of a free body” with reference to jigs and fixtures? Explain briefly ′

(b) Calculate the indexing requirement for 150 30 divisions on a milling machine equipped with an angular indexing head. The index plates available are Plate No.1: 15 16 17 18 19 20 holes Plate No.2: 21 23 27 19 31 33 holes [8+8] Plate No.3: 37 39 41 43 47 49 holes 8. (a) Discuss the various process parameters to be considered to control metal removal rate in Electro Chemical Machining. (b) Discuss the applications and limitations of Electron Beam Machining. [8+8] ⋆⋆⋆⋆⋆

1 of 1

Set No. 3

Code No: RR321403

III B.Tech II Semester Supplimentary Examinations, Aug/Sep 2008 ADVANCED MANUFACTURING TECHNOLOGY (Mechatronics) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. (a) Explain commonly used popular tool designation systems. (b) Define the following terms i. Cutting speed ii. Cutting feed iii. Depth of cut. [10+6] 2. (a) How a centre lathe is specified? Discuss. (b) What are constructional features of tail stock? Explain with the help of neat sketch. [6+10] 3. (a) Explain the differences in the construction and operation between a slotter and planer. (b) Discuss the important tools used in shaping operations and draw the neat sketches of tool forms. [6+10] 4. (a) Enumerate the differences between boring and drilling operations. (b) Discuss the operations that can be performed on a drill press but not on a lathe. [6+10] 5. (a) Briefly discuss the classification of milling machines. (b) Draw the neat sketches of any five side milling cutters and explain briefly. [6+10] 6. (a) What is the marking systems followed in case of grinding wheels? Explain the individual elements of the marking system from the stand point of the functioning of the wheel. (b) Define grinding ratio. Explain the effect of the following factors on the grinding ratio: i. ii. iii. iv.

Grinding wheel type Hardness of the work piece Depth of cut Wheel and work piece speeds

7. (a) How is the gearing ratio calculated for differential indexing. 1 of 2

[8+8]

Set No. 3

Code No: RR321403

(b) Explain the following jigs with the help of neat skectches. i. ii. iii. iv.

Plate drill jigs Shaft drill jigs Indexing jigs Box drill jigs.

[6+10]

8. (a) Explain the applications of Ultrasonic Machining process. (b) Discuss the following terms with respect to Electron Beam Machining. i. ii. iii. iv.

Surface tension. Back pressure of evaporating atoms Electron pressure Hydrostatic pressure of molten metal. ⋆⋆⋆⋆⋆

2 of 2

[8+8]

Set No. 4

Code No: RR321403

III B.Tech II Semester Supplimentary Examinations, Aug/Sep 2008 ADVANCED MANUFACTURING TECHNOLOGY (Mechatronics) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. (a) Discuss the importance of different tool angles and other parameters associated with the geometry of a single point cutting tool. (b) In an orthogonal cutting operation, the orthogonal rake is100 while the principal cutting edge angle is 600 . Calculate i. Back rake angle ii. Side rake angle. [8+8] 2. (a) Describe the different types of work holders used in a lathe. (b) Discuss the various turning operation. Draw the necessary sketches.

[8+8]

3. (a) Explain the differences in the construction and operation between a slotter and planer. (b) Discuss the important tools used in shaping operations and draw the neat sketches of tool forms. [6+10] 4. (a) Sketch the designation of twist drill as per Indian standard and enumerate the various elements of it. (b) What are the fields of application and the operating advantages of a radial drill press? [8+8] 5. (a) Classify the milling cutters and discuss their functions. (b) Discuss the applications of Gang milling

[8+8]

6. What are the various types of surface grinding machines? Describe their principle, advantages and limitations [16] 7. (a) How is the gearing ratio calculated for differential indexing. (b) Explain the following jigs with the help of neat skectches. i. ii. iii. iv.

Plate drill jigs Shaft drill jigs Indexing jigs Box drill jigs.

[6+10]

8. (a) What are the reactions that takes place near anode and cathode in Electro Chemical Machining? Explain. 1 of 2

Set No. 4

Code No: RR321403

(b) State the applications, advantages and limitations of Laser Beam Machining. [8+8] ⋆⋆⋆⋆⋆

2 of 2