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Cycloidal gear tooth profile linear modification method and cycloidal pin gear transmission device

A cycloid gear and tooth profile curve technology, applied in the field of linear modification of cycloid gears, can solve the problems of large amount of modification of cycloid gear tooth profile, increased transmission error, large tooth profile deviation, etc.

Pending Publication Date: 2019-01-11
CRRC QISHUYAN INSTITUTE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the modification amount of the cycloidal gear tooth profile modified by these methods is too large, and the backlash is not taken into account. The deviation between the modified tooth profile and the theoretical tooth profile is large, which will lead to an increase in the transmission error.

Method used

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  • Cycloidal gear tooth profile linear modification method and cycloidal pin gear transmission device
  • Cycloidal gear tooth profile linear modification method and cycloidal pin gear transmission device
  • Cycloidal gear tooth profile linear modification method and cycloidal pin gear transmission device

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no. 1 example

[0085] An embodiment of the present invention provides a method for linearly modifying the tooth profile of a cycloidal gear, comprising the following steps:

[0086] S1. Set the parameters of the cycloidal gear tooth profile curve: the radius of the needle tooth distribution circle is R z , the radius of the pin wheel is r z , the eccentricity is The center O of the rolling circle revolves around the center O of the base circle a The rotated angle is ψ, and the number of cycloid gear teeth is Z a , Number of pins Z b , the short amplitude coefficient is K 1 = AZ b / R z , the absolute rotation angle of the rounded r is θ a , The angle between the public normal of point M and the X axis is γ.

[0087] S2. Derivation of cycloidal gear tooth profile curve equation and radius of curvature formula:

[0088]

[0089]

[0090] Among them, ψ is the angle that the center of the rolling circle turns around the center of the base circle;

[0091] S3. Deduce the equation ...

no. 2 example

[0179] The present invention also provides a cycloidal pinwheel transmission, including a gear, pin teeth, and the cycloidal gear tooth profile linear modification method described in the first aspect, and the gear and the pin teeth are based on the first embodiment The cycloidal gear tooth profile linear modification method, the cycloidal gear tooth profile linear modification method includes all the optional technical solutions in the first embodiment, at least has all the technical solutions brought by the first embodiment Beneficial effects are not repeated here.

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Abstract

The invention provides a cycloidal gear tooth profile linear modification method and a cycloidal pin gear transmission device, the method comprising the following steps: S1, setting cycloidal gear tooth profile curve parameters; S2, deducing the equation of the tooth profile curve and the formula of the curvature radius of a cycloidal gear; S3, deriving the equation of pressure angle alpha with respect to psi; S4, deducing the equation of the meshing angle alpha' of the cycloidal gear tooth profile; S5, deducing the relation equation between the pressure angle alpha of the cycloid gear tooth profile and the meshing angle alpha'; S6, modifying the pin tooth radius rz=rz (psi), wherein rz (psi) is a linear function of the rotation angle psi, and solving the linear function rz (psi). At the same time of ensuring the required backlash of installation, lubrication and the like, the invention can obtain small cultivation amount and higher transmission accuracy.

Description

technical field [0001] The invention relates to the technical field of linear modification of cycloidal gears, in particular to a method for linear modification of a cycloidal gear tooth profile and a cycloidal pinwheel transmission device. Background technique [0002] Cycloidal pinwheel planetary transmission, referred to as cycloidal pinwheel transmission, the cycloidal pinwheel mechanism is a key part of the entire transmission, and its meshing state plays a decisive role in the transmission accuracy. [0003] Cycloidal pin wheel planetary transmission theoretically belongs to backlash-free meshing, but due to actual manufacturing and installation errors, the actual tooth profile of the cycloidal gear does not exactly match the theoretical tooth profile, which makes the cycloidal gear mesh with the pin teeth Interference and jamming will occur. The traditional way to deal with this problem is to solve this problem by using cycloidal gear modification methods such as equ...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/20Y02T90/00
Inventor 陈馨雯王起梁张永升
Owner CRRC QISHUYAN INSTITUTE CO LTD
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