Offset worm and wormwheel transmission designing and manufacturing method

Abstract

The invention discloses an offset worm and wormwheel transmission designing and manufacturing method. The offset worm and wormwheel transmission designing and manufacturing method comprises the following steps: a. determining a gear face equation of the worm according to an actual machining parameter and a worm design principle; b. obtaining a gear face equation of the wormwheel according to the gear face equation of the worm and a gear face meshing principle and according to the installing position of the worm and wormwheel; and c. carrying out tooth direction and tooth profile shaping to the wormwheel so as to drive the worm and the wormwheel to form point contact that the contact area is elliptically shaped, and the long axis direction of the contact area is perpendicular to the relative movement direction of the gear face of the worm and the wormwheel so as to form a beneficial contact condition of extreme pressure lubrication. According to the method, after the worm and the wormweel which are meshed mutually are designed, the worm is shaped, so that the gear face is meshed to be point contact; the meshing moulage is adjusted conveniently; the installation error is absorbed; and at the same time the contact area of the worm and the wormwheel is elliptically shaped and the long axis of the contact area is perpendicular to the direction that the gear faces of the worm and the wormwheel move relatively, so that the worm and the wormwheel which are meshed mutually are under lubrication in a good state.

Description

technical field [0001] The invention belongs to the technical field of worm gear transmission, and mainly relates to a design and manufacturing method of an offset worm gear transmission. Background technique [0002] Offset worm drive is a new type of worm drive used for motion transmission between two staggered shafts. The worm of offset worm drive can be conical or cylindrical, which are called conical worm or cylindrical worm respectively. The axis of the worm and the worm There is an included angle, so this transmission form is called offset worm transmission. [0003] Offset worm transmission has the advantages of light weight, large coincidence, strong bearing capacity, and high efficiency. It is especially suitable for occasions with large reduction ratio, small volume, high power, strong impact, smooth operation and active control of backlash. In addition, when the offset worm is driven, the angle between the tangent direction of the instantaneous contact line and ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a design and manufacturing method of offset worm and worm gears to solve the problem in the prior art that the transmission lubrication effect is not good due to the inability to control the shape and position of the contact area when designing the offset worm and worm gears

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