Let's first talk about ordinary gear reducer, ordinary gear reducer is used in straight gear, straight gear shortcomings are mainly in the process of operation will produce vibration, the vibration can not be eliminated, whether it is to change the design, manufacturing materials and other measures can not be avoided. Some changes in involute shape may occur along the entire tooth surface at the same time. This leads to a regular and unsolvable puzzle, one contact per tooth.
       So the vibration of the gear causes a large load, and will cause noise. Another disadvantage is that sometimes the additional strength obtained by two pairs of teeth meshing during tooth to tooth contact time cannot be utilized because the stress is limited by the condition of single tooth meshing in the cycle, thus resulting in a waste of energy. This problem is hoped to be improved in the future.
In turn, the helical gear planetary reducer is not the same, as the name implies, the internal use of helical gear reducer is helical gear, helical gear has higher transmission efficiency, better performance in transmission accuracy, especially in the high-power planetary reducer, with higher torque and more stable transmission.
      We can regard the helical planetary reducer as a set of cylindrical gears made of thin slices and gears dislocated, so that when the gear is running, each piece of gear is in contact with different tooth lines, which can effectively compensate for the error of each thin slice of gear. This compensation is very effective for the elasticity of gear teeth, so as to obtain such results. Any gear with an error of less than 10mm can average the error, thus greatly reducing the vibration and thus running as smoothly under load as the gear with an error of less than 1mm.
Because at any given time, about half the time (assuming a degree of contact of about 1.5) there are two teeth in contact with each other, there is an added benefit in terms of strength. Thus can be built at 1.5 times the tooth width instead of