ME2029 Design Of Jigs, Fixtures & Press Tools B.E Question Bank : dmice.ac.in

Name of the College : DMI College OF Engineering
Department : Mechanical Engineering
Subject Name : ME2029 – Design Of Jigs, Fixtures And Press Tools
Degree : B.E
Website : http://uou.ac.in/old-question-papers
Document Type : Question Bank

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DMICE Design Of Jigs, Fixtures Question Bank

ME2029 – Design Of Jigs, Fixtures And Press Tools Model Question Paper
(LOCATING AND CLAMPING PRINCIPLES)

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UNIT-I

PART-A :
** Differentiate between jigs and fixtures
** What is meant by 3-2-1 principle of location?
** Define fool proofing.
** Mention the locating methods.
** When is diamond-pin used for locations?
** Write any two requirements of clamping devices.

** Define jack pin locator.
** What is the use of dowel pins? Give one example?
** Sketch a latch clamp
** State the significance of clamping force in relation to cutting force.
** Define locating devices.
** Define clamping devices.
** Explain the importance of clamping force.

** Sketch a Bayonet clamp.
** What is the advantage of swing plate clamp?
** Sketch a Bayonet clamp.
** List out some the power clamping.
** List the standard parts used in jigs and fixtures fabrication.

** What is the primary function of a linear bushing?
** Name any two materials commonly used in jigs and fixture and their hardness range.

PART-B :
** Explain briefly materials used in jigs and fixtures.
** Describe the design principles for jigs and fixtures.
** Explain briefly 3-2-1 location of principle.
** Explain clearly the principle of location of work piece in jigs and fixtures.
** What is meant by clamping? Explain the principle involved in the design of clamp?
** With a neat sketch explain pneumatic and hydraulic clamping.
** Explain briefly non-conventional clamping.
** Explain briefly with neat sketch latch and wedge clamping.
** Explain briefly with neat sketch cylindrical and adjustable locators.
** What is meant by standard parts? Explain its short notes of standard parts.

UNIT-II

(JIGS AND FIXTURES)
PART-A :
** Define sandwich jig.
** What is the function of jig bushes?
** Distinguish between the channel and box jigs.
** Distinguish between a pot jig and a box jig.
** Sketch the channel jig.
** What are the advantages of trunnion jig?
** Define indexing device.
** Illustrate the working of an automatic drill jig.
** How can a lathe fixture be clamped to the lathe?
** Write the specific requirements of a turning fixture.
** What are the different types of jigs?
** What is the function of mandrels in turning fixture?
** Mention the application of turning fixture.
** Name any four essential features of a milling fixture.
** What are boring fixtures? How do you classify them?
** What are welding fixtures? State the general purpose of a welding fixture.
** What are various possibilities to operate automatic drill jigs?
** State the provision made on latch or leaf Jig.
** When will press fit bushes or fixed bushes be used?
** What devices are mainly used to assemble modular elements?

PART-B :
** Explain any four types of drill bushes with sketch
** What is a drill jig? What are the requirements of drill jigs?
** Describe the working of rack and pinion operated drill jig and compare with pneumatic jig.
** Explain briefly box jig and turnover jig.
** Sketch and explain air operated drilling jig components.
** What are factors to be considered while designing milling fixture?
** Write short notes on inspection and welding fixtures.
** Explain briefly universal jig and plastic jig.
** Design and draw a suitable drill jig to drill 4 holes of 5 mm diameter at 70 PCD an f 60mm thickness mild steel plate.
** Explain the importance accessories of jig and fixture.