Diploma in Tool and Die making GTTC

1. Government Tool Room & Training Centre, Chikodi
Diploma in Tool and Die Making
“Jigs and Fixture”
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GTTC,CHIKODI SANTOSH MALIPATIL
Unit-4 Guiding Elements

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Unit-4 Guiding Elements
What is drill bushes
bushes are used in drill jig to guide drills, Reamers & other cutting tools to
the work piece.

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1. Press fit bushes
a) Headed press fit bush
b) Headless press fit bush
c) Extended drill bush
2. Renewable bushes
a) Fixed renewable bushes
b) Slip bushes
3. Threaded clamping bushes
Drill bushes are classified as
4. Special bushes

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Headed bushes are better than headless because collar in headed bushes stops
Correctly to drill bit
It wont get loose in jig plate

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