Code No.410302 IV /IV B.Tech. I-Semester Examination November 2002

Set No.

1

.in

CAD/CAM (Common to Mechanical Engineering, Mechatronics ,Production Engineering) Time: 3 hours Max.Marks:80 Answer any Five questions All questions carry equal Marks --1.a) With a suitable example, explain the various steps involved in design process? b) Explain with the help of a neat sketch, how an image is generated on a computer terminal. What is meant by a concatenation matrix? Demonstrate how translation, scaling and rotation operations can be performed simultaneously on a graphic element using concatenation matrix

3.a)

Discuss the modeling guidelines to be followed by the user while constructing a surface model on a CAD/CAM system. Why the sweep representation is useful in creating solid models of 2 ½ D objects? Explain.

b)

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2.

What is an FMS? Explain in detail the basic components of FMS.

5.a) b)

Explain Opitz classification system. Discuss the basic code structures used in group technology.

6.a) b)

Explain the computerized business functions of CIM. With a block diagram explain the computerized elements of CIM system

7.a)

Write short notes on the following. (i) Computerized inventory management system. (ii) Use of computers in cost planning and control. Outline the objectives of computer-aided quality control.

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b)

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4.a) b)

8.a)

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b)

What is adaptive control system? Discuss its applications. Mention its advantages to the manufacturing technology. Mention some of the important applications of NC-machine tools in manufacturing.

**********

Code No.410302 IV /IV B.Tech. I-Semester Examination November 2002

Set No.

2

.in

CAD/CAM (Common to Mechanical Engineering, Mechatronics and Production Engineering) Time: 3 hours Max.Marks:80 Answer any Five questions All questions carry equal Marks --1.a) Define CAD? Explain the applications of computers in design process. b) Explain how an image is generated and maintained in a direct beam refresh terminal. Explain the model structure used in data base organization. Distinguish between C-rep and 2-rep models.

3.a) b)

Discuss various FMS layout configurations. What are the functions performed by FMS computer control system.

4.a) b)

What are part families? What are the methods used for grouping of parts? Explain the part design and manufacturing attributes giving examples.

5.a)

Describe with the help of neat sketches the major surface entities provided by CAD/CAM systems. Discuss the most commonly used solid entities with the help of neat sketches.

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b)

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2.a) b)

6.a) b)

Discuss the role of Computer networks in CIM. Explain the applications of Computer Integrated Manufacturing systems.

7.a)

What are the disadvantages and limitations of traditional Quality control systems and explain how they are overcome by computers and automation. Explain how the inspection sensor technologies are classified.

b)

Discuss the salient features of machining centers. State some of its advantages over the conventional NC-machine tool. Mention some of the important applications of NC-machine tools in manufacturing.

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8.a)

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b)

*******

Code No.410302 IV /IV B.Tech. I-Semester Examination November 2002

Set No.

3

.in

CAD/CAM (Common to Mechanical Engineering, Mechatronics and Production Engineering) Time: 3 hours Max.Marks:80 Answer any Five questions All questions carry equal Marks --Explain the benefits of CAD over conventional design process. What are the functions of an interactive graphic design workstation?

2.

Explain how the curves are represented in a) Generic form b) Parametric form.

3.a) b)

Discuss the applications of FMS. Explain the different types of machines used in FMS workstations

4.a) b)

Compare FMS with other types of manufacturing approaches. What is group technology? Classify a component using any one type of coding system

5.a)

Explain the step by step procedure to create the surface model of the connecting rod. Describe the scheme of Boundary Representation to create solid models of physical objects.

6.a) b)

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b)

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1.a) b)

Distinguish between manufacturing planning and manufacturing control as two broad categories of computer applications in manufacturing. Discuss the possible computer applications in Manufacturing Planning activities. Explain the applications of machine vision in computer aided inspection Explain general types of non-optical, non-contact inspection methods.

8.a)

Define NC-programming. Why computer aided programmes are preferred for NC-machine tools. NC system consists of three basic elements. Explain them in the light of role played by each in accomplishing the job of NC system.

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7.a) b)

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b)

**********

Code No.410302 IV /IV B.Tech. I-Semester Examination November 2002

Set No.

4

.in

CAD/CAM (Common to Mechanical Engineering, Mechatronics and Production Engineering) Time: 3 hours Max.Marks:80 Answer any Five questions All questions carry equal Marks --List the benefits of CAD./CAM systems. Explain how productivity increases by using CAD/CAM systems.

2.a)

Distinguish between interpolation and approximation approaches used in design of curves. Explain the basic curve fitting techniques.

b)

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1.a) b)

Classify and discuss various flexible manufacturing systems. Discuss the data files and system reports generated by the computer control systems of an FMS.

4.a) b)

Explain the composite part concept in group technology with an example. Explain the benefits of a well designed classification and coding system for group technology.

5.a) b)

Briefly discuss about the composite surface and Bezier surface. Describe the scheme of Constructive Solid Geometry to create solid models of physical objects.

6.a)

What are the two approaches to computer aided process planning? Explain any one of them. Outline the benefits of using computer-automated process planning systems.

b)

Explain the important benefits of application of computer-aided quality control systems. Explain the application and advantages of integration of CAQC with CAD/CAM systems.

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7.a)

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3.a) b)

b)

Differentiate between: a) Absolute and incremental positioning system. b) Fixed and floating zero methods for specifying zero points. c) CNC and DNC.

Aj

8.

******

Code No.410302 IV /IV B.Tech. I-Semester Examination November ...

b) Explain with the help of a neat sketch, how an image is generated on a computer · terminal. 2. What is meant by a concatenation matrix? ... surface model on a CAD/CAM system. b) Why the sweep representation is useful in creating solid models of 2 ½ D objects? Explain. 4.a) What is an FMS? b) Explain in detail the ...

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