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One-tooth tangential comprehensive deviation calculation method based on actually measured tooth profile deviation

A technology of comprehensive deviation and calculation method, applied in design optimization/simulation, special data processing application, geometric CAD, etc., can solve problems that cannot be analyzed separately, require high precision of gear clamping, etc., and achieve the effect of reducing the difficulty of clamping

Pending Publication Date: 2021-01-22
BEIJING UNIV OF TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

However, the gear clamping accuracy required by this method is relatively high, and because the coincidence degree of the actual gear transmission is greater than 1, it is impossible to conduct a separate analysis for a certain tooth profile
The gear overall error measurement technology can obtain the tangential comprehensive deviation of one tooth, but requires special instruments

Method used

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  • One-tooth tangential comprehensive deviation calculation method based on actually measured tooth profile deviation
  • One-tooth tangential comprehensive deviation calculation method based on actually measured tooth profile deviation
  • One-tooth tangential comprehensive deviation calculation method based on actually measured tooth profile deviation

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Embodiment Construction

[0018] Below in conjunction with accompanying drawing, present embodiment is described further:

[0019] 1. Model the theoretical tooth profile based on information such as the number of teeth and the modulus

[0020] Take the coordinate origin O(0,0) as the center point of gear 1 (drive wheel). with O 2 (acosα, asinα) is the center point of gear 2 (passive gear, a is the center distance between the two gears, and α is the pressure angle), and the ideal tooth profile is established according to the parameters such as the number of teeth, modulus, pressure angle, and displacement coefficient of different gears Model, the theoretical involute tooth profile model is established through parametric equations. At the intersection point T of the base circle of gear 1 and the x-axis 1 (r b , 0) as the x-axis perpendicular line, the perpendicular line is the meshing line of the two gears. In this way of modeling, the meshing line of the two gears is perpendicular to the x-axis, an...

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Abstract

The invention discloses a method for calculating gear one-tooth tangential comprehensive deviation based on an actually measured tooth profile deviation curve. The method comprises the steps of idealtooth profile modeling, actual tooth profile deviation fitting, rotation and meshing of a tooth profile deviation curve and a tooth profile, one-tooth tangential comprehensive deviation calculation, how to divide the rotation angle and effectively shorten the calculation time on the premise that the calculation precision is guaranteed, and the like. The actual tooth profile is measured only through a gear measuring instrument, actual tooth profile information is obtained, and then the one-tooth tangential comprehensive deviation of a gear is calculated.

Description

technical field [0001] The invention belongs to the technical field of gear precision measurement, and specifically relates to a method for calculating a comprehensive tangential deviation of a tooth based on actually measured tooth profile deviations. The tooth profile is measured with a gear measuring instrument. And input the measured real tooth surface information into the computer to model the real tooth surface. Then, by processing the real tooth profile shape information through coordinate translation, coordinate rotation, etc., the tangential comprehensive deviation of one tooth of the gear is calculated. Background technique [0002] As a kind of transmission mechanism, gears, like shafts and bearings, have a long history in human history and are widely used in the mechanical field. The gear has many advantages such as constant transmission ratio and compact structure. Among them, the tangential comprehensive deviation of one tooth will have a great impact on the...

Claims

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Application Information

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IPC IPC(8): G06F30/17G06F30/20
CPCG06F30/17G06F30/20
Inventor 林家春李晗晓滕辰石照耀
Owner BEIJING UNIV OF TECH