Stepper motor slowdown stepper motor in many places are used, everybody know it also from the previous article know some small make up. Today, small make up to you about on role in gear deceleration in stepper motor? Let everybody can better understand the slow step motor matters. 1, step motor reducer, gear manufacturing process tooth to tooth profile error, deviation of base pitch, and error and gear ring radial runout error is the main error of machine of decelerate of planet of transmission noise. Planetary reduction and control stepping motor transmission efficiency of a problem. 2, the processing precision of parts before assembly and matching method of components (Completely interchangeable, group matching, single matching, etc. ), will affect the precision of the system after the assembly level, their level of noise is in the range of influence, therefore, the indicators system for verification after assembly (Or calibration)Noise is key to control system. 3, the assembly different heart will cause the imbalance of shaft system is running and loose half close, because the theory of gear meshing side to cause noise. High precision gear transmission assembly when the imbalance will seriously affect the precision drive system. This is because the tooth profile error is small, small gear tooth surface roughness, under the same test conditions, the noise is smaller than the ordinary gear 10 db. Small gear pitch error, at the same experimental conditions, the noise level is smaller than the ordinary gear 6 ~ 12 db. Error will cause the transmission power is not the whole tooth width, contact area of the steering gear this end or the end, because of the local stress increase tooth deflection, cause the noise level. From the above we can see the influence of gears for stepper motor is very important, so we must especially pay attention to the quality of the gear and installation, make it better, that is helpful to slow down the step motor development and use.