Code No: R05420304

SET-1

JAWAHARLAL NEHRU TECHNOLOGY UNIVERSITY, HYDERABAD R05 IV B.Tech. II Semester Regular Exams, April/May – 2009 AUTOMATION IN MANUFACTURING (Automobile Engineering) Max. Marks.80 Answer any Five questions All questions carry equal marks --1. (a) Describe the application of hydraulic and pneumatic control systems for automation. (b) Explain tool changing and mechanical feeding.

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Time: 3 hours

[8+8]

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2. (a) Describe the concept of automation in Machine Tools with examples. (b) Explain with sketches work part transport.

[8+8]

3. (a) Describe the use of Material Handling Equipment in Machine Tools. (b) Explain different types of assembly lines.

[8+8]

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4. (a) Explain adaptive control and give examples of its application. (b) Describe sensors and actuators used in adaptive control.

[8+8]

5. (a) Describe the design and fabrication of automated flow lines. (b) Describe ways and means of improving line balance.

[8+8]

6. (a) Give the general terminology of transfer lines.

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(b) Describe different types of buffer systems and compare these.

[8+8]

7. (a) Explain Business process Re-engineering and application.

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(b) Describe MRP and ERP.

8. a) b)

[8+8]

Explain the important modules in a Enterprise Resource Planning software?

Explain software configuration of BPE. x-x-x

[8+8]

Code No: R05420304

SET-2

JAWAHARLAL NEHRU TECHNOLOGY UNIVERSITY, HYDERABAD R05 IV B.Tech. II Semester Regular Exams, April/May – 2009 AUTOMATION IN MANUFACTURING (Automobile Engineering) Max. Marks.80 Answer any Five questions All questions carry equal marks ---

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Time: 3 hours

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1. (a) Discuss the following automation strategies: i. Combined Operations ii. On-line inspection iii. Plant Operation Control iv. Process Control and Optimization (b) List out the various hydraulic components that can be used in automated manufacturing systems. Explain them briefly. [8+8]

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2. (a) Explain the following rotary transfer mechanisms with the help of neat sketches: i. Geneva Mechanism ii. Ratchet and Pawl Mechanism (b) Explain the differences between intermittent transfer mechanism and power-and-free transfer mechanism. [10+6] 3. (a) Discuss the analysis of the performance of a partially automated flow line without buffer storage. (b) What are the reasons for the implementation of automated flow lines in the production units? Explain briefly. [8+8] 4.(a)

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(b)

What are the different manual methods for solving the line balancing problems? Briefly discuss any one method. Discuss the following ways for improving the performance of the line balance: i. Dividing work elements ii. Pre assembly of components iii. Inventory Buffers between stations [8+8]

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5. (a) Explain the advantages of implementing various principles of material handling. (b) Describe the following conveyors used in material transport systems: i. In-floor tow-line conveyor ii. Overhead trolley conveyor. [8+8]

Set-2 6.(a)

(b)

Draw the block diagram of Adaptive Control with Optimization system for milling and explain each block in detail. [16]

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7.

Explain the following components of an AS/RS: i. Storage/Retrieval machine ii. Storage modules. “The work-in-process storage systems are a systematic method for managing work-in-process in batch production factories”-Explain the reasons. [8+8]

Which type of Rapid Prototyping systems use a liquid as starting material? Discuss any one such RP system. (b) Define ‘Business Process Reengineering’. Discuss how the Business Process Reengineering tool will enhance the performance of companies to survive in the emerging competitive environment. [8+8]

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8.(a)

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x-x-x

SET-3

Code No: R05420304

JAWAHARLAL NEHRU TECHNOLOGY UNIVERSITY, HYDERABAD R05 IV B.Tech. II Semester Regular Exams, April/May – 2009 AUTOMATION IN MANUFACTURING (Automobile Engineering) Max. Marks.80

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Time: 3 hours

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Answer any Five questions All questions carry equal marks --1. (a) Describe the principle and working of the following automated machine tools: i. Trunion Machine ii. Centre Column Machine. (b) Define ‘Fixed Automation’ and ‘Flexible Automation’. Enumerate the differences between them. [8+8]

3.(a)

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2. (a) Explain the salient factors on which the most appropriate type of transport system for a given application depends. (b) A Geneva with eight slots is used to operate the worktable of a dial indexing machine. The slowest workstation on the dial indexing machine has an operation time of 2.5 seconds, so the table must be in a dwell position for this length of time. i. At what rotational speed must the driven member of the Geneva mechanism be turned to provide this dwell time? ii. What is the indexing time each cycle? [6+10] Define ‘Lower bound approach’ used in the analysis of transfer lines without storage buffer and explain with suitable example. (b) Briefly discuss the following related to the efficiency of an automated flowlines: i. Efficiency of line with storage buffer ii. Efficiency of line without storage buffer [8+8]

Discuss various mechanical fastening processes used to accomplish the assembly of the components. (b) Explain the following ways to improve the line balance: i. Changing work head speeds at automatic stations ii. Parallel stations iii. Methods Analysis. [8+8] 5.(a) Discuss the following factors in material handling equipment: i. Scheduling of the moves ii. Material flow rates. (b) Explain how the charting techniques are helpful for visualizing the movement of materials. [8+8]

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4.(a)

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6. (a) Discuss the advantages of using Automated storage systems in a warehouse. (b) What are the various problems encountered in interfacing handling and storage systems with manufacturing units? Discuss them briefly. [8+8] Draw the block diagram of Adaptive Control with Optimization system for drilling and explain each block in detail. [16]

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7.

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8. (a) Define ‘Concurrent Engineering and discuss the goals of Concurrent Engineering. (b) Draw the block diagram of ERP and explain briefly. [8+8]

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x-x-x

SET-4

Code No: R05420304 JAWAHARLAL NEHRU TECHNOLOGY UNIVERSITY, HYDERABAD R05 IV B.Tech. II Semester Regular Exams, April/May – 2009 AUTOMATION IN MANUFACTURING (Automobile Engineering)

Max. Marks.80 Answer any Five questions All questions carry equal marks --1. (a) Discuss the following automation strategies that can be employed to improve productivity in manufacturing operations: i. Specialization of Operations ii. Increased Flexibility iii. On-Line inspection iv. Computer Integrated Manufacturing. (b) Explain the following types of Automation: i. Hard Automation ii. Soft Automation [8+8] 2. a) b)

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Time: 3 hours

What are the methods of transporting work pieces on flow lines? Explain them. Briefly explain the use of pallet fixtures. [8+8]

Explain the efficiency of flow line when flow line is having storage buffers with infinite capacity. (b) In a 10 station transfer line, the probability that a station break down will occur for a given work part is equal to 0.01. This probability is the same for all 10 stations. Determine the frequency of line stops per cycle on this flow line using the lower bound approach and also calculate the production rate. [8+8]

4.(a)

What is ranked positional weight value? Explain its importance in solving line balancing problems by using Ranked Positional Weights Method. Discuss any four methods that should be considered by the designer of a flow line for improving the efficiency of the assembly line. [4+12]

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(b)

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3.(a)

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5. (a) Discuss the following factors in material handling equipment: i. Flow rate of materials ii. Routing factors. (b) When the cranes are used in manufacturing industries? Describe the different types of Cranes used for material handling. [8+8] 6.(a)

(b)

What are the problems encountered in interfacing AS/RS units to the manufacturing function? How these can be overcome? Define ‘work-in-process’ and discuss use of automated work-in-process Storage systems. [8+8]

Set-4

7.

Draw the block diagram of Adaptive Control machining with Optimization system and explain each block in detail. [16]

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8. (a) Describe the liquid based Rapid Prototyping system with the help of neat sketch. (b) State the applications of Concurrent Engineering. [8+8]

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