How machines learned precision
2 days ago
- The Industrial Revolution required precise machine parts like cylinders, flat surfaces, and screws for engines and machinery.
- John Wilkinson's boring mill improved cylinder accuracy by supporting the boring bar at both ends, reducing errors.
- The slide rest clamped the cutting tool to reduce chatter and improve accuracy in lathes.
- Flat surfaces were achieved using a scraper and a three-plate method to create a reference without a pre-existing flat surface.
- Henry Maudslay developed methods to make precise screws using geometry and averaging techniques without copying.
- Change gears allowed a single lead screw to cut multiple thread pitches.
- Measurement advanced from Maudslay's bench micrometer (Lord Chancellor) to Whitworth's machine that detected a millionth of an inch.
- Whitworth's measuring machine used a gravity piece and worm drive to eliminate backlash and detect tiny differences.
- Standards and gauges enabled consistent manufacturing, transferring precision to everyday work.