User:Wm Seán Glen

From Wikipedia, the free encyclopedia

My name is Seán Glen and I repair machine tools for Boeing. I work on CNC and conventional machine tools. I plan on starting or contributing to articles on machine tools. I realize that this is not a "how to" forum but there needs to be some background information on a technolgy that affects nearly every manufactured item in the world.

Machine Tool Concepts

What is and what is not a machine tool?
What is an axis? Why are axes perpendicular to each other?
Rigidity
Accuracy vs Tolerance
Repeatability
Feedback loops and nested feedback loops
rotating motion and force vs linear motion and force

Component parts

Bed
Ways
Leadscrew, acme, smooth and recirculating ball
CNC (computer numerical controller)
PLC (programmable logic controller)
Servo drives, spindle drives, variable speed electric motors (rotating and linear) stepper motors, indexers
Inputs, switches, sensors, logical inputs
Outputs, indicators, relays, motor contactors, logical outputs
Communication

Seán 04:55, 8 March 2006 (UTC)