What are the features of a harmonic reducer? If I need a speed ratio. When the torque is constant. Require smooth mechanical operation, no inertia.
I know a little bit more about the planet. I can understand the harmonics. I hope I can do it.The utility model has the advantages of light weight, large reduction ratio, high position precision and repeated positioning precision, small volume, high torque output, no empty return, high transmission efficiency and low noise. In general, the original principle of meshing is completely different from the ordinary gear meshing, so it can achieve no backlash, micro feed and high repeatability positioning accuracy.
And because each moment in the 180 degree alignment position, there are about thirty percent teeth in the meshing state, so it can bear a great torque, steel is better. But I heard that it is more expensive than planetary gear reducer. Select the reducer, you need to put forward the final output torque and final speed, etc., and then determine what the deceleration ratio.
The robot reducer usually uses harmonic reducer and RV reducer (that is cycloid pin gear reducer). At present, the best is the radial differential reducer (it is evolved from the automobile differential). The process of harmonic reducer, including Japan, has also been improved; RV reducer technology is mature, the crankshaft process is difficult, the diameter difference reducer is sub RV deceleration device is modified to cancel the crankshaft, excellent technology and more mature and superior, the diameter difference of sub transmission ratio can reach infinity (practical single differential gear and ring gear tooth number ratio number), volume ratio is two of a harmonic reducer (i.e. volume modulus is two times harmonic reducer), harmonic reducer and flexible transmission, the diameter difference of sub rigid reducer drive, rigid robot drive buffer stroke in place shorter and small RV deceleration for sub diameter difference decelerator torque small size for each joint of the robot
