Quality Magazine

Techniques to improve quality on the shop floor and in manufacturing planning.

Desktop Engineering

Design, simulation, test, prototyping and high performance computing.

3D Scanners

A white paper to assist in the evaluation of 3D scanning hardware solutions.

Power Transmission

Gear drives, bearings, motors, clutches, couplings, machine controls, sensors and components.

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Twist Drill Bit
The figure below labels the important angles for a typical twist drill bit.
 

 


 
Drill Bit Variety
The figures below illustrate various drill bits and their cut hole configurations.


 


 
    


 
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Drill Chucks
Drill chucks can be of several types, but are typically three-jaw since three points on the circumference define a circle in two dimensions. A standard three-jaw and a multi-jaw chuck are shown in the figures below.

For a look at the mechanism of a three-jaw chuck, see the lathe section. The drill bit and chuck assembly can be mounted on a drill press, discussed in the drill press section.

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Glossary