2017年11月7日星期二

Merits and demerits

The helical gear box are used in both high power gear reducer and small power gear reducer, and the helical gear box has an irreplaceable role on some occasions. Let's analyze the advantages and disadvantages of the lower helical gears:
The advantages of the Helical Bevel Geared Motors: the minimum number of teeth is not produced. The high degree of recombination reduces the load of each gear and improves the bearing capacity of the gear. Good meshing is stable, low noise.
Rack of helical gear faults: compact structure, in shape cutter cutting helical cylindrical gear, its no root cutting standard gear, the minimum number of teeth is less than the spur gears, thus can get a more compact structure; Contact ratio is big, under the same conditions, the helical gear meshing process is longer than straight gear, the contact ratio is bigger, this reduces the load capacity of each pair of gear, so as to improve the bearing capacity of the gear, prolong the service life of the gear, and smooth transmission; Human type gear manufacturing is troublesome, manufacturing process is complicated, cost is high.

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