Gear pair comprising a gear with a surface structure, transmission comprising gear pair, and method for producing a gear
A gear and microstructure technology, applied in the field of gear pairs, can solve problems such as loss of power and reduction in transmission efficiency
Active Publication Date: 2019-04-26
BAYERISCHE MOTOREN WERKE AG
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- Description
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- Application Information
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Problems solved by technology
As a result of the axis offset, longitudinal sliding of the tooth flanks towards each other occurs during operation, which leads to loss of power and thus to a reduction in the efficiency of the transmission
Method used
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Embodiment Construction
[0051] in figure 1 A perspective partial cross-sectional view of the first gear is shown in. The teeth 4 of the gear extend along the longitudinal direction 11 and have tooth height extensions along the tooth height direction 12, and the recesses of the microstructure 2 basically extend along the tooth depth direction 13. The first gear includes a first tooth 4 having a first tooth surface 1. A microstructure 2 is applied to the first tooth surface 1, which is shown by structured lines. For the sake of clarity, only one microstructure 2 is shown, in fact the first tooth surface 1 has a plurality of such microstructures 2. The microstructure 2 has an extension of the structure tangent 3 at the contact point 9. Here, the structural tangent line 3 lies in the tangent plane 8 at the contact point 9 and intersects not only with the first tooth flank 1, but also with the tooth flank of another gear not shown which intersects the first tooth flank at the contact point 9 cut.
[0052...
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Abstract
The invention relates to a gear pair comprising at least one first gear with a microstructure (2) and comprising at least one additional gear. The first gear has first teeth (4) with first tooth flanks (1) and the additional gear has additional teeth with additional tooth flanks. In order to transfer power from the first gear to the additional gear, a first tooth flank (1) contacts an additional tooth flank on an imaginary tangential plane (8) which touches both tooth flanks in a contact point (9). The addition of the speeds of the two tooth flanks in the contact point (9) on the tangential plane (8) produces a sum speed (7). The microstructure (2) is designed as a depression on the first tooth flank (1) and runs at least partly along a structure line on the first tooth flank (1), and thestructure line is touched by a structure tangent (3) in the contact point (9), said structure tangent lying on the tangential plane (8). The invention is characterized in that the structure tangent (3) and the sum speed (7) form an angle y, and the angle y is selected from a range between more than 25 degrees and less than or equal to 90 degrees.
Description
Technical field [0001] The present invention relates to a gear pair including gears with a plurality of teeth, wherein each tooth includes at least one tooth surface with a microstructure for transmitting power, and the present invention relates to a transmission device with such a gear pair And a method for manufacturing the gear. A gear pair with a gear according to the preamble of claim 1 is known from DE 10 2010 038 438 A1. Background technique [0002] Gears are used to transmit rotational movement and torque from the drive shaft to the driven shaft (power transmission), wherein the gears can be configured as cylindrical gears, bevel gears, hypoid gears, crown gears, helical gears or worm gears, for example. [0003] Hypoid meshing (bevel gear transmission with positive axis offset) is a special structure type of bevel gear transmission that allows the drive axis and the driven axis to be oriented at an angle to each other, wherein the axis additionally Stagger each other. ...
Claims
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IPC IPC(8): F16H1/14F16H55/08F16H1/00
CPCF16H1/003F16H1/145F16H55/0853B23F19/00B24C1/04F16H1/10F16H1/14F16H55/06F16H55/17F16H2055/176
Inventor H·沙欣T·赫托
Owner BAYERISCHE MOTOREN WERKE AG