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Indexing and Dividing Head
Machinist Apprenticeship 2- Manual Theory
11
Other
Not Applicable
11/24/2019

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Cards

Term
Meaning of Indexing?
Definition
Act of rotating a part by a specific amount.
Term
Meaning of Dividing?
Definition
Breaking up of the circumference of a work piece into equal segments.
Term
3 Styles of dividing heads?
Definition
Direct/Rapid indexing head
Universal Dividing Head
Wide Range Dividing heads.
Term
What style of dividing head would you use for a one off part in a jobbing shop?
Definition
Universal
Term
How would you accomplish indexing the part on a direct/rapid dividing head?
Definition
Rotate the chuck itself by hand
Term
One revolution on a universal indexing head equals?
Definition
1/40 of a turn(40:1)
(Sometimes can be 50:1 or 60:1)
Term
What types of dividing heads can do direct indexing?
Definition
Universal(Disengage Worm) and Direct/Rapid Dividing Heads
Term
What are 3 companies which produce dividing heads?
Definition
Brown and Sharpe, Cincinnati Milacron, Elliot Machine tool company
Term
What is the limit which the body of the dividing head can swivel(Degrees)
Definition
105 Degrees: From 5 Deg. from below horizontal to 10 degrees beyond vertical.
Term
A worm Gear engages with what?
Definition
Worm shaft
Term
What is the number of holes or slots on most direct indexing plates?
Definition
24,30,36
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