【 Synchronous belt wheel. Pay more attention to the problem of application! ! !

by:Uliflex     2020-11-27
【 Synchronous belt wheel. Pay more attention to the problem of application! ! ! Application of synchronous belt wheel we should pay attention to some problems: 1, when the belt wheel speed is greater than the limit speed of dynamic balancing need less than the limit speed, just as a static balance, the balance after testing, the residual amount of unbalance of pulley should not be greater than the allowable values. 2, pulley installation deflection, with lateral compression on the baffle plate, intensifying with flank wear. Therefore, installation time need to pay attention to the belt wheel axis parallelism, make each pulley drive center plane is located in the same plane. 3, with overload, or when the loads will result in a pitch is poor, resulting in a meshing interference and the tooth surface abrasion, overload, the bearing capacity decrease. Therefore, application of synchronous cog belt must prevent overload, and choose the appropriate pre-tightening force. 4, the service life of the pulley and the tooth profile accuracy has important effect on synchronous belt transmission. More than life, tooth profile shape change, toothed with pulleys tooth mesh can not correctly, can cause synchronous cog belt failure in a short time. 5, the material of belt wheel, tooth surface hardness, etc have important influence on the quality of the transmission. Pulley is zui common failure forms of gear tooth surface pitting and wear, therefore with tooth surface should have enough abrasion resistance and contact strength. Research has shown that generally in the pulley material can choose medium carbon steel or carbon alloy structural steel, 45 #, for example, 40 cr, 35 simn, normalizing or conditioning treatment, the tooth surface hardness of 200-260 - HB. Higher strength and surface hardness, good toughness, can meet the requirements of practical engineering, because of the hardness is moderate, it can extract teeth profile after heat treatment. Six, synchronous toothed belt drive, to avoid synchronous belt from the belt wheel side slip, pulley needs a baffle plate and baffle plate should be higher than the belt on the back of the 1 to 2 mm.
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