Controllable profile modification method of tooth surface of arc-tooth cylindrical worm
A worm tooth surface and arc-shaped tooth technology, which is applied to components with teeth, belts/chains/gears, portable lifting devices, etc., can solve the problem of increasing the transmission noise of arc-shaped cylindrical worm pairs, affecting transmission accuracy, and affecting The bearing capacity and service life of the arc-shaped cylindrical worm pair transmission can eliminate installation errors, expand the contact area, and achieve the effects of good lubrication performance
Inactive Publication Date: 2018-06-26
HAIAN COUNTY SHENLING ELECTRICAL APPLIANCE MFG +1
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Problems solved by technology
[0002] In the application of heavy-duty transmission transmission equipment, the meshing point between the tooth root and the tooth top of the arc-shaped cylindrical worm pair usually produces a strong impact, which seriously affects the load-carrying capacity and life of the arc-shaped cylindrical worm pair transmission, and also increases the arc. The transmission noise of the toothed cylindrical worm pair affects the transmission accuracy
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[0028] like figure 1 As shown in the schematic diagram of curvature correction of the tooth surface, the tooth surface of the arc-shaped cylindrical worm and the tooth surface of the worm gear are recorded as Σ 1 and Σ 2. According to the principle of meshing, in order to achieve the requirement of continuous transmission of the worm pair, the normal direction of the two tooth surfaces of the worm pair must coincide at the contact surface, and the normal direction and the direction of the relative speed are perpendicular to each other. The tooth surface of the worm is Σ 1, order P The point is a controllable contact point on any surface Γ, and the surface Γ exist P The tangent to the point is τ. at the point of contact P opposite to the tooth surface of the worm Σ 1 along the surface Γ exist P Point arc length direction (tooth length direction) s and surfaces Γ exist P Tangent direction of point (tooth height direction) t Make curvature correction and get a ne...
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The invention provides a controllable profile modification method of a tooth surface of an arc-tooth cylindrical worm, and belongs to the technical field of self-adaptive heavy-load conveying and driving equipment. The method is characterized in that the curvature of the tooth surface of the arc-tooth worm is corrected to realize consistent change of the tooth surface profile modifying rules and the normal curvature radius in opposite moving direction of secondary tooth surfaces of the worm; the main curvature of a worm grinding wheel is analyzed and a mathematic model for profile modifying isbuilt based on the worm pair engaging theory and the induced curvature concept; then the induced curvature and the geodesic torsion of a contact point of the tooth surface of the worm are solved, andthe microscopic shape of the tooth surface of the worm is analyzed; and finally a curvature correction equation and a tooth surface profile modifying equation are solved based on the analyzing result, thus realizing the curvature based profile modification of the tooth surface of the worm; after the worm is subjected to tooth surface curvature correction, the tooth surface engaging is replaced byarc-surface contact, thus the mounting error can be removed, and the normal direction of the tooth surface of the worm pair is vertical to the relative speed direction of the tooth surfaces of a wormgear and the worm, and as a result, the worm gear and the worm which are engaged with each other can be lubricated.
Description
technical field [0001] The invention is applied in the technical field of self-adaptive heavy-duty conveying and transmission equipment, and in particular relates to the modification technology of the tooth surface of the arc-shaped cylindrical worm. Background technique [0002] In the application of heavy-duty transmission transmission equipment, the meshing point between the tooth root and the tooth top of the arc-shaped cylindrical worm pair usually produces a strong impact, which seriously affects the load-carrying capacity and life of the arc-shaped cylindrical worm pair transmission, and also increases the arc. The transmission noise of the toothed cylindrical worm pair affects the transmission accuracy. In actual production, in order to improve the assembly and meshing performance of the arc-shaped cylindrical worm pair and make the tooth surface mesh into arc-shaped surface contact, it is necessary to modify the worm pair to increase the meshing area. Currently, mos...
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IPC IPC(8): F16H55/22F16H55/08
CPCF16H55/22F16H55/088
Inventor 吉卫喜范小斌李申李春涛周涛
Owner HAIAN COUNTY SHENLING ELECTRICAL APPLIANCE MFG
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