Drill Jig and Fixtures

Definition of Drill Jig:

Drill Jig defined as a device which is ensuring that a hole to be reamed, tapped or drilled in a workpiece will be machine in the proper phase.

In this work place should lighting as soon as possible.

Should be large enough for holding.

Eliminates the sharp center’s for operator safety.

Mention the Advantages of the Drill Jigs:

It make possible to drill room or tap holes at much greater speeds and with greater accuracy.
When Drill Jigs are used skill workers no need to operate it.
The path of cutting tool control by Drill Jigs.

Difference between the Drill Jigs and Fixtures:

Drill Jig may be remedy around on the table and is not so fast with machine table. But Fixture always fastened with machine bed.
Drill Jigs are physically limited and control the path of cutting tool. But fixtures do not guide by cutting tool generally.
Drill Jigs applications is drilling, tapping and reaming holes. But Fixtures application is turning, milling, shaping, planning operation.
In drill jig machine skill operators are not required. But Fixtures skill operators must be required.

Types of Jigs:

Leaf Jig
Template Jig
Box Jig
Tumble Jig
Plate Jig
Indexing Jig
Universal Jig
Vise Jig

Comments

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Packing, Seals and Gaskets

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Why a dc generator fails to build up voltage?

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what is the difference between long shunt and short shunt dc generator?

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Therbligs and Basic 17 motion name of therblig

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Various Methods of Drawing Flow Nets

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Which type of Battery connection Series or Parallel Connection is used for Diesel Generator?

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what is PIV drive? Why is PIV drive more effective than any other system of drive?

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What are the main components of Automobile?

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“Equalizer connection is needed in lap winding armature but not in wave winding “ why ?

The equivalent circuit of a four point – pole dynamo with a simplex winding. The voltage induced in each path is assumed to both to be same and should be if the reluctance of each magnetic path is the same, so that the lines of flux cut by each inductor of each path are the same. However wear of the bearings or deflection of the armature shaft may cause the armature to be closer to some poles and farther from others, thus changing the length of the air gap, and therefore the reluctance of the magnetic circuits of the poles is not identical. This factors cause the voltage in the materials making up the magnetic circuit. These factors cause the voltage in each parallel path differ, and the unequal voltages in turn cause flow of a circulating current through the windings and brushes , undue heating of the armature and waste the power. To reduce the circulating current, points on the winding which should be at the same potentials are brought to the same potentials by connecting

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