Articles About planetary gearheads
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Approximately one quarter of all servo motors around the world require some type of gear reduction in their applications. From large satellite dishes to precision medical devices, gearboxes boost torque and reduce speed for servos in order for them to be sized more efficiently. While gearbox fundamentals haven't changed much over the past 20 years, their effectiveness has improved significantly, driven mostly by the need to accommodate advancements in servo technology.
A Practical Comparison of Planetary and Orbitless Gear-Heads.
The load carrying capacity of gear transmissions depends strongly on design, material and operation conditions. Modern analysis methods, e.g. finite element analysis (FEA), consider the above parameters with more or less sufficient accuracy. Yet it remains an ongoing challenge to account for backlash and manufacturing errors, despite a definite need to do so.
In the general context of the reduction of energy consumption and polluting emissions, gearbox efficiency has become a major issue.
This paper presents a joint project conducted by Ashwoods Electric Motors and Oerlikon Fairfield that uses planetary drives with an integrated electric motor. Current solutions used in production of off-highway vehicles rely upon large, heavy and inefficient brushed DC or induction motors, coupled to a planetary gearbox. This presents a number of challenges to the vehicle designers such as: limited vehicle range, limited space around the motor/drivetrain, and motor durability. The proposed integrated system utilizes an Oerlikon Fairfield Torque Hub, widely used in off-highway vehicles, and the Ashwoods first-to-market, interior permanent magnet motor. How these products are integrated, i.e. incorporating a brake solution, represents a market-changing product. Using interior permanent magnet (IPM) technology in the motor design means the motor can be up to 70% lighter, 70% smaller and 20% more efficient than traditional motors used in off-highway traction applications.
Brevini Power Transmission helps spectators enjoy stadium sights and sounds.
Standardized calculation methods such as ISO 6336 and DIN 3990 already exist to determine the load distributions on gears inside a planetary gearbox, but by their very universal nature, these methods offer varying results depending on the gearbox design. Double helical gears, in particular, can benefit from more specific, complex algorithms to reach a maximum level of efficiency. Double helical gears interact with the rest of the gearbox differently than helical or spur gears, and thus benefit from different analytical models outside the standardized methods. The present research project describes the algorithm to determine the load distribution of planetary gearboxes with double helical gears.
News Items About planetary gearheads
1 Danaher Motion Planetary Gearheads Require No Maintenance (April 1, 2006)
[photo]Danaher Motion's Micron ValueTRUE planetary gearheads are a more economical extension to Danaher Motion's family of Micron...
2 Drive Lines Examines Advantages of Planetary Gearheads (April 18, 2016)
Machinery and systems such as robots, packaging machines, pick and place units, tool changers in machine tools, printing presses and weld...
3 Applied Motion Introduces PE Planetary Gearheads (May 30, 2017)
PE Planetary Gearheads maintain maximum efficiency at the highest speeds. They are notably light and extremely powerful, yet suitable for...