The Age of Direct Drive - Replacing a traditional motion control system with direct-drive technology improves efficiency and design flexibility - (PPT)

摘要

Let's face it - under trying economic times, you look for any competitive advantage that improves your margins and adds money to the bottom line. A good place to investigate is with machine design. Simplified mechanical designs, enabled by direct drive motors with fewer components that run more efficiently, are gaining positive reviews. Better yet - they require less labor to build. With a lower total cost of ownership and a quicker return on investment, these innovative, flexible machines are crucial investments. Mechanical power transmission devices, such as ballscrews and belt drives (used in linear motion applications) or precision gearheads (used in rotary motion applications) are constructed with components that wear. This can lead to performance degradation and eventual system failure. These components might demand frequent adjustment, lubrication, and tensioning, resulting in production downtime. These systems also introduce backlash (clearances between mating components) and compliance (component deflection) into the servo system, making it more difficult to tune and measurably slower in achieving the desired positioning.