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Cone envelope cylindrical worm (ZK worm) this is a kind of nonlinear worm screw surface. It cannot be in the lathe processing, can be in only the milling machine in the grinder milling system and grinding. Processing, except for the spiral movement outside, cutting tool and at the same time around its own axis for rotary motion. At this time, milling cutter (or grinding wheel) rotary surface of envelope surface, as the worm gear tooth surface for spiral (figure < cone envelope cylindrical worm >), in the I-I and N-N section tooth profile are curve (FIG. < cone envelope cylindrical worm >). This worm facilitate grinding, the worm high accuracy, application is extensive.
As for the above all kinds of worm and the pairing of worm gear tooth profile is completely with the tooth profile modification of worm and different. Worm gear is generally in the hob or fly knife with gear hobbing machines. In order to guarantee the worm and worm gear can correct meshing, cutting of worm gear hob tooth profile, and the worm shall be the tooth profile modification consistently; When the center distance of the deep, also should and worm drive the center distance of the same.
Reproduced, please indicate http://www.screw-rod.com/