What are the functions of worm gear sets and conical gears?
Conical gear: the input shaft and output shaft are generally 90 degrees, and their axes intersect, when the work of the gear by axial force, high transmission efficiency
Worm gear set: This is a problem of Oh, you say should be a worm, great reduction rate, the input shaft and the output shaft angle of 90 degrees is generally high. Since the work with unequal tooth surface friction is serious, the work efficiency is low and the transmission is not reversible, much need for large reduction ratio place
First of all, tell me about the worm1., a large transmission ratio can be obtained, which is more compact than an interlaced helical gear mechanismThe line contact between the 2. pairs of meshing teeth is much higher than that of the crossed helical gear mechanism3. worm drive is equivalent to screw drive, which is multi gear meshing drive, so it has stable transmission and little noise4. self locking. When the guide angle of the worm is less than the equivalent friction angle between the meshing teeth, the mechanism has self-locking property and can realize reverse self locking, that is, the worm wheel can only be driven by the worm, and the worm wheel can not be driven by the worm wheel. If the self-locking worm mechanism is used in hoisting machinery, its reverse self-locking can act as a safety guard.5., the transmission efficiency is low, wear more serious. When the worm and worm gears engage in the transmission, the relative sliding speed between the meshing teeth is large, so the friction loss is large and the efficiency is low. On the other hand, the relative sliding speed, tooth wear serious, serious heat to heat and reduce wear, often using expensive antifriction and good wear resistance materials and good lubrication device, so the cost is high
