User:Wm Seán Glen

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)