Manufacturer? The gap between brands, advantages
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 for single tooth difference), the volume ratio of two is a harmonic reducer (i.e. the 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 reducer.
The diameter difference of sub reducer and planetary reducer is less than the efficiency of harmonic reducer and RV reducer, so a lot of harmonic reducer transmission efficiency is lower than 0.8, the diameter difference of sub reducer planetary reducer meshing tooth number is more than five times less than the harmonic reducer and RV reducer, thus the diameter difference sub reducer theoretical accuracy only the higher harmonic reducer reducer is difficult to surpass RV.
At present, only the emperor of Japan, the Japanese in China called RV reducer. Zhejiang Hengfeng developed a few years ago, and then seemed to have tried to Chery, the performance can not meet the requirements. In the 863 plan is this topic, Shanghai Jiaotong University Robotics Institute, has developed the Qinchuan machine more than 10 years, but still not qualified products. Similar products, in the same torque, the Japanese RV reducer volume to do small
