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Quiet gear wheel and method for producing such a gear wheel

A technology of gears and gear bodies, applied in additive manufacturing, components with teeth, belts/chains/gears, etc., can solve the problems of increased manufacturing costs, high cost of semi-finished products, etc., and achieve the effect of improving vibration characteristics

Inactive Publication Date: 2017-11-28
GKN POWDER METALLURGY ENG GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These known methods have the disadvantage that the necessary force transmission can only be achieved conditionally
In addition, semi-finished products sometimes have to be produced at high cost and subsequently joined
Although the force transmission can be improved by designing the individual components with an optimized form fit, this increases the manufacturing costs

Method used

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  • Quiet gear wheel and method for producing such a gear wheel
  • Quiet gear wheel and method for producing such a gear wheel
  • Quiet gear wheel and method for producing such a gear wheel

Examples

Experimental program
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Effect test

Embodiment Construction

[0066] figure 1 and figure 2 Different embodiments of a closed density profile 3 arranged around an axis of rotation 2 of a gear wheel 1 are shown. The corresponding geometry of regions of different densities can have smooth transitions 4 or also jumpy density differences. They can have a transitional, wave-like or also sawtooth-like design.

[0067] image 3 It is shown that the individual components 5 with different densities 3 can change shape in the axial direction. Along the axial extension, these density differences can run parallel to the axis of rotation 2 and at an angle 6 relative to the axis of rotation.

[0068] Figures 4 to 6 A local, preferably asymmetrically arranged density change 8 is shown not only in the radial direction 7 but also in the axial direction 2 . For this purpose, on the one hand the stiffness and thus the natural frequency of the gear wheel 1 can be influenced. On the other hand, bulk sound can be absorbed, deflected or also redirected ...

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PUM

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Abstract

The present invention relates to a gear wheel containing at least one sintered material having a porosity, the gear wheel having, in addition to the porosity, another noise-reducing means.

Description

technical field [0001] The invention relates to a toothed wheel comprising at least one sintered material with porosity, wherein the toothed wheel has additional sound-reducing properties in addition to the porosity. Furthermore, a method for producing such gears is proposed. Background technique [0002] With increasing electrification in the vehicle drive train, the noise characteristics of the gearbox are becoming more and more important when examining the overall noise characteristics of the vehicle. In the literature, noise reduction measures are differentiated into primary and secondary, ie active and passive measures. In the case of active measures, the excitation mechanism, ie eg the microgeometry of the toothing, is changed directly. On the other hand, in the case of passive measures, the sound conduction is modified in such a way that the bulk sound can be transmitted to a reduced extent. [0003] Possibilities for passive measures are found, for example, in Die...

Claims

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Application Information

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IPC IPC(8): F16H55/17F16H55/14F16H55/06B22F3/11B22F5/08B22F7/08
CPCB22F3/1109B22F3/1112B22F3/1118B22F5/08B22F7/002B22F7/08F16H55/06F16H55/14F16H55/17B22F10/28Y02P10/25G10L21/0208B33Y10/00B33Y80/00F16H57/0006
Inventor B.洛伊波尔德S.赫格斯M.施奈德T.舒普V.延森G.科特霍夫E.恩斯特
Owner GKN POWDER METALLURGY ENG GMBH
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