The PWU type plane double enveloping toroidal worm reducer is based on a plane as the mother surface, through the phase circular motion,
The tooth surface of the toroidal worm is enveloped, and then the tooth surface of the worm is used as the mother surface, and the tooth surface of the worm wheel is enveloped through relative motion.
Compared with ordinary cylindrical worms and straight profile toroidal worms, the planar double-envelope toroidal worm has the following characteristics:
1. The worm is a toroidal worm, and the number of teeth meshing with the worm wheel at the same time increases;
2. The tooth surface of the worm is precisely ground after hardening treatment. The hardness of the tooth surface and the surface roughness level are improved, which can achieve a high tooth profile accuracy.
3. The tooth surface contact area is large, and there is instantaneous double-line contact, the total length of the contact line is lengthened.
4. The tooth surface has a large lubrication angle, and it is easy to form dynamic pressure oil during meshing.