Robot Harmonic Drive Gear Strain Wave Gear Zero Backlash Worm Gear Motion Control

Industrial Robot Harmonic Drive Gear Strain Wave Gear Zero Backlash For Precision Motion Control

The harmonic drive gear, also known as a strain wave gear, is a type of gear mechanism used in industrial robots for precision motion control, compact design, and high gear reduction ratios. Here's an overview of the harmonic drive gear and its applications in industrial robots:

• Principle of Operation: A harmonic drive gear consists of three main components: a circular spline, a flexspline, and a wave generator. The flexspline, which has internal teeth, is preloaded against the circular spline, which has external teeth. The wave generator is connected to the input shaft and deforms the flexspline, causing it to engage with the circular spline. This deformation creates a wave-like motion that transfers torque from the input to the output.
• High Gear Reduction Ratio: Harmonic drive gears provide high gear reduction ratios in a compact design. The reduction ratio is determined by the number of teeth on the flexspline and the circular spline. This makes them suitable for applications in industrial robots that require high torque output and precise motion control.
• Zero Backlash: Harmonic drive gears are known for their zero-backlash operation. The preloading of the flexspline against the circular spline ensures direct and immediate response to input motion without any clearance or backlash. This characteristic is crucial for applications that demand accurate positioning and repeatability.
• High Precision and Repeatability: The zero-backlash nature of harmonic drive gears allows for precise and repeatable motion control. This makes them suitable for tasks such as pick-and-place operations, assembly, and other high-precision applications in industrial robots.
• Compact Design: Harmonic drive gears offer a compact and lightweight design compared to other gear systems with similar gear reduction ratios. This compactness is valuable in industrial robots where space and weight constraints are critical considerations.
• High Torque Transmission: Harmonic drive gears can transmit high torque due to the large contact area between the flexspline and the circular spline. This makes them suitable for applications in industrial robots that require high force output and torque transmission, such as lifting heavy loads or exerting significant pressure.
• Smooth Operation: Harmonic drive gears provide smooth and continuous motion due to the wave-like engagement between the flexspline and the circular spline. This smooth operation minimizes vibration and noise, enhancing the overall performance of the robot.

Our company was formerly known as Changsha Double Star Gear Industrial Co., Ltd, which was established in 1994. It is a directly affiliated university-run enterprise founded by Central South University Professor Zeng Tao, the leading expert on spiral bevel gears in China. It was later renamed as Changsha Senjie Gear Co., Ltd (abbreviated as "CSG") in 2016. CSG is a production R&D base specializing in professional design, reserch, manufacture and sales of high-quality small module spiral bevel gears and high reduction hypoid gears and cylindrical gears. In 2023, Hunan Dinghan New Material Technology Co., Ltd. was established as a specialized international export business department. CSG has strong scientific research and development capabilities and is also equipped a full set of advanced equipment including seven-axis five-linkage CNC spiral bevel gear grinding machines and gear milling machines. By making the best use of the scientific and technological achievements and equipment of the Gear Research Institute of Central South University, machanical processing, heat treatment and testing. We have developed high-quality products featuring high reduction, high speed, heavy load, low noise and less teeth for users.

With the quality policy of "scientific and technological innovation, quality first, being first-class firm and customer‘s satisfaction", we have won the trust of well-known domestic and abroad enterprises with stable and excellent quality. It is committed to be a pioneer of the industry of China's small-module spiral bevel gears, and is dedicated to providing service for any related industry requiring industrial robots, CNC turning and milling compound power tool turrets, industrial sewing machines, reducers, bicycles, power tools and aeromodelling. We sincerely look forward to your cooperation!