Mechanical bevel gear is a very important part in the operation of mechanical equipment, and some equipment wears out the mechanical bevel gear all at once during operation. What is the situation?The wear of mechanical bevel gears is comprehensive, and the reasons can be found roughly from the links of structure, installation, and working environment.
Why does the bevel gear break
When meshing correctly, that is, when the center distance is correct and the meshing gap is appropriate, the position of the transmission contact surface must be evenly distributed above and below the index line. If the center distance is too large, the meshing gap of the mechanical bevel gear will increase. The meshing contact surface is biased toward the tooth tip, the force on the gear increases, and the gear wear accelerates. At this time, gear tooth impact and uneven rotation are also prone to occur, resulting in unstable transmission, such as too small center distance. Then the gear meshing gap is reduced.
Generally, the gear top clearance is reduced according to industry technical standards, which affects the normal transmission and lubrication of the gear, and causes the meshing surface to deviate to the tooth root, which causes the wear of the tooth surface above the pitch line of the driving gear and below the pitch line of the driven gear.In addition, the cantilever beam structure should be avoided as much as possible, because this structure is easy to cause instantaneous bending and deformation of the transmission shaft, which makes the gear mesh bad and causes tooth surface wear.
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