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Novel continuous sine tooth profile and gear pair thereof

A gear pair, sinusoidal technology, applied in belt/chain/gear, components with teeth, portable lifting devices, etc., can solve the problem of not solving the impact of gear teeth meshing and meshing, difficult to ensure meshing accuracy, manufacturing and installation. High precision requirements, to achieve the effect of reducing tooth surface contact stress, improving bearing capacity, and high bending strength

Active Publication Date: 2021-01-15
YANSHAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the gears with all the above-mentioned tooth shapes, the tooth profile curves are discontinuous, and there is an impact of meshing in and out of the teeth, which seriously affects the stability of the transmission
A gear transmission and gear (CN200720090263.1) proposes a cylindrical gear tooth profile with continuous sine or cosine tooth profile, the tooth profile curve is completely composed of sine or cosine tooth profile, the tooth profile curve is continuous, but theoretically coincides If the degree is less than 1, it is impossible to achieve continuous and correct meshing. It is necessary to use multiple combined gears to improve the degree of coincidence. The manufacturing and installation precision requirements are high, and it is difficult to guarantee the meshing precision requirements.
[0005] In short, in all the above-mentioned gears with tooth shapes, the problem of continuous meshing of the gear pair is not solved, that is, the problem of the meshing in and out of the teeth is not solved.

Method used

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  • Novel continuous sine tooth profile and gear pair thereof
  • Novel continuous sine tooth profile and gear pair thereof
  • Novel continuous sine tooth profile and gear pair thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0056] like Figure 1-3 As shown, the present invention provides a novel continuous sinusoidal tooth profile, including: a reference sinusoidal tooth profile and a conjugate sinusoidal tooth profile, the reference sinusoidal tooth profile and the conjugate sinusoidal tooth profile have a conjugate relationship with each other; The tooth profile curve of the reference sine tooth profile is the reference sine curve 1, and the reference sine curve 1 is a continuous multi-wave closed curve that is periodically distributed in the plane, and its parameter equation is:

[0057]

[0058] According to the reference curve, the meshing line equation can be obtained from the principle of gear meshing:

[0059]

[0060] By further coordinate transformation, the parametric equation of the conjugate sinusoidal tooth profile can be obtained. After determining the number of teeth Z 2 , modulus m 2 , angular position coordinates center distance a 0 After that, the corresponding tooth...

Embodiment 2

[0080] like image 3 As shown, the gear pair II adopts internal meshing, and its parameters are shown in Table 2:

[0081] Table 2

[0082]

[0083] After substituting the above parameters into the above tooth profile equation, it can be obtained as follows image 3 As shown in the gear pair II, it can be seen that the novel sinusoidal profile gear in the present invention is multi-tooth meshing during meshing. The transmission ratio of the gear pair during fixed shaft transmission: i 12 =Z 2 / Z 1 = 25 / 12.

[0084] The invention is a novel continuous sinusoidal tooth profile and its gear pair, including the reference sinusoidal tooth profile, the conjugate sinusoidal tooth profile and the gear pair formed by the mutual meshing of the gears formed by the two tooth profiles. A series of parameters can be selected during design, such as: number of teeth, module, tooth height coefficient, tooth thickness influence coefficient, center distance, etc., in order to design the...

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Abstract

The invention provides a novel continuous sine tooth profile which comprises a reference sine tooth profile and a conjugate sine tooth profile, and a tooth profile curve of the conjugate sine tooth profile is derived from a tooth profile curve equation of the reference sine tooth profile; the two tooth profiles are meshed with each other to form a gear pair. According to the novel continuous sinetooth profile, the curve conjugated with the reference sine curve is solved by mainly utilizing the gear meshing principle, and the curve is the tooth profile curve of the conjugated sine tooth profile; the coincidence degree of a meshing pair composed of the two sine tooth profiles is much larger than 1, and continuous and correct meshing of the two continuous sine curves can be achieved; and meshing-in and meshing-out impact of gear teeth is greatly reduced; and the transmission is stable, and the novel continuous sine tooth profile is suitable for high-speed occasions requiring stable work.

Description

technical field [0001] The invention relates to the technical field of gear tooth profile design, in particular, to a novel continuous sinusoidal tooth profile and a gear pair thereof. Background technique [0002] At present, the most used gear tooth profile is involute. The involute gear is easy to design and manufacture, has stable transmission and good interchangeability, but also has the disadvantages of low strength and limited bearing capacity, which cannot meet the transmission needs of some occasions. In order to design and manufacture gears with better performance, people began to change the tooth profile curve, and designed arc gears, double arc gears and micro-segment gears. Arc gears and double arc gears have high tooth profile strength and strong bearing capacity, but the design and manufacture of gears are relatively difficult. Compared with traditional involute gears, the strength and efficiency of micro-segment gears are greatly improved, but the current th...

Claims

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Application Information

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IPC IPC(8): F16H55/17F16H55/08
CPCF16H55/08F16H55/17
Inventor 许立忠李佳怡
Owner YANSHAN UNIV
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