Thin-wall cup type flexible gear structure

Abstract

The utility model discloses a thin-wall cup type flexible gear structure which comprises a thin-wall cup body, the opening end of the thin-wall cup body is an input end, an opening of the input end is a wave generator installation opening, and a transmission gear is arranged on the outer circle of the wave generator installation opening. The cup bottom of the thin-wall cup body is an output end, an output connecting flange is arranged at the output end, the output connecting flange is connected with the thin-wall cup body through a semicircular arc to form a semicircular cup bottom, and the semicircular cup bottom protrudes out of the cup and is basically flush with the outer side of the output connecting flange. The utility model has the advantages that: under the condition that the gear parameters, the cup diameter and the rated load are the same, the axial length and the volume of the gear are greatly reduced, and can be reduced to be about 45 percent of the original axial length and volume or even smaller than 45 percent of the original axial length and volume. Under the condition that the gear parameters, the cup diameter, the axial size and the volume are the same, the bearing capacity of the gear is improved by 60-80% or even higher on the original basis, and therefore the service life is greatly prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of thin-walled cup type flexible wheel structures, belong to harmonic reducer technical field. BACKGROUND

[0002] Harmonic reducer is a kind of thin-walled flexible wheel elastic deformation for motion or power transmission reducer, with its simple structure, few parts, small volume, high transmission precision, large transmission ratio and other characteristics and is widely applied.

[0003] Harmonic reducer is mainly composed of thin-walled flexible wheel, rigid wheel and wave generator three basic components. The transmission of motion or power of harmonic reducer is under the action of wave generator, forces thin-walled flexible wheel to produce elastic deformation constantly, and achieves the purpose of transmission by interacting with rigid wheel. Thin-walled flexible wheel is the lowest strength part in harmonic reducer, and the volume and carrying capacity of harmonic reducer are mainly determined by the volume and carrying capacity of thin-walled flexible wheel.

[0004] In the current harmonic reducer, thin-walled cup type flexible wheel is very common. However, since the cup bottom of the current thin-walled cup type flexible wheel is mostly ordinary flat bottom structure, the inner side of cup bottom output connecting flange is flush with thin-walled cup bottom, and the outer side protrudes towards cup bottom. This kind of thin-walled cup type flexible wheel has the disadvantages of smaller carrying capacity, larger axial size and volume. Specifically, under the condition of certain gear parameters, cup diameter, axial size and volume, its carrying capacity is smaller. And under the condition of certain gear parameters and cup diameter, in order to improve its carrying capacity and service life, its axial size and volume must be increased.

[0005] Therefore, the prior art still has deficiencies and needs to be further improved. SUMMARY

[0006] The utility model discloses a kind of thin-walled cup type flexible wheel structures. Under the condition of same gear parameters, cup diameter and carrying capacity, it has smaller axial size and volume, or under the condition of completely same gear parameters, cup diameter, axial size and volume, it has higher carrying capacity and service life, so as to overcome the deficiencies of prior art.

[0007] The technical scheme of the utility model discloses a kind of thin-walled cup type flexible wheel structures, including thin-walled cup body, the opening end of the thin-walled cup body is input end, the opening of input end is wave generator installation mouth, and the outer circle of wave generator installation mouth is equipped with transmission gear;The cup bottom of the thin-walled cup body is output end, and output end is equipped with output connecting flange, and output connecting flange is connected with thin-walled cup body by "semicircular" arc, forms "semicircular" cup bottom, and "semicircular" cup bottom protrudes towards cup outside, and is substantially flush with the outer side of output connecting flange.

[0008] In the thin-wall cup type flexspline structure, the depth B of the wave generator mounting port and the tooth width b of the transmission gear have a relationship of B=(1.05-1.12)b.

[0009] In the thin-wall cup type flexspline structure, the diameter d of the output connecting flange and the diameter D of the wave generator mounting port have a relationship of d=(0.56-0.64)D.

[0010] In the thin-wall cup type flexspline structure, the radius r of the semicircular cup bottom and the tooth width b of the transmission gear have a relationship of r=(0.38-0.46)b.

[0011] The thin-wall cup type flexspline structure has the advantages that, compared with the prior art, according to the flexible gear thin shell theory and finite element simulation analysis and calculation, the axial length and volume of the thin-wall cup type flexspline are greatly reduced, and can be reduced to about 45% of the original axial length and volume or even smaller.

[0012] 1. In the case of the same gear parameters, cup diameter and rated load, the axial length and volume of the thin-wall cup type flexspline are greatly reduced, and can be reduced to about 45% of the original axial length and volume or even smaller.

[0013] 2. In the case of the same gear parameters, cup diameter, axial size and volume, the carrying capacity of the thin-wall cup type flexspline is increased by 60-80% or even higher than the original, and the service life is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The utility model discloses a structure schematic view.

[0015] Mark explanation: 1 - thin-wall cup, 2 - wave generator mounting port, 3 - transmission gear, 4 - output connecting flange, 5 - "semicircular" cup bottom. DETAILED DESCRIPTION

[0016] The utility model will be further described in connection with the drawings and examples, but not as the basis for the limitation of the utility model.

[0017] The utility model discloses a thin-wall cup type flexspline structure, including thin-wall cup 1, the opening end of thin-wall cup 1 is input, and the opening of input is wave generator mounting port 2, and the outer circle of wave generator mounting port 2 is equipped with transmission gear 3;The cup bottom of thin-wall cup 1 is output, and output is equipped with output connecting flange 4, and output connecting flange 4 is connected with thin-wall cup 1 through "semicircular" circular arc, forms "semicircular" cup bottom 5, and "semicircular" cup bottom 5 protrudes to the cup outside, and is basically flush with the outside of output connecting flange 4.

[0018] The depth B of the wave generator mounting port 2 and the tooth width b of the transmission gear 3 have a relationship of B=(1.05-1.12)b.

[0019] The diameter d of the output connecting flange 4 and the diameter D of the wave generator mounting port 2 have a relationship of d=(0.56-0.64)D.

[0020] The radius r of the "semicircular" cup bottom 4 and the tooth width b of the transmission gear 3 have a relationship of r=(0.38-0.46)b.

[0021] The utility model discloses a thin -walled cup type flexible wheel is improved to the structure, and the size relation of each component between each other is limited simultaneously, makes the thin -walled cup type flexible wheel of the utility model discloses, under the condition of same gear parameter, cup diameter and carrying capacity, makes the thin -walled cup type flexible wheel of the utility model discloses have smaller axial dimension and volume, or under the condition of same gear parameter, cup diameter, axial dimension and volume, make it have higher carrying capacity and service life.

Claims

1. A thin-walled cup-shaped flexible wheel structure, comprising a thin-walled cup body (1), characterized in that: The open end of the thin-walled cup (1) is the input end, and the opening of the input end is the wave generator mounting port (2). The outer circle of the wave generator mounting port (2) is provided with a transmission gear (3). The bottom of the thin-walled cup (1) is the output end, and the output end is provided with an output connection flange (4). The output connection flange (4) is connected to the thin-walled cup (1) through a semi-circular arc to form a semi-circular cup bottom (5). The semi-circular cup bottom (5) protrudes outward and is basically flush with the outer side of the output connection flange (4).

2. The thin-walled cup-shaped flexible wheel structure according to claim 1, characterized in that: The depth B of the wave generator mounting port (2) and the tooth width b of the transmission gear (3) have the relationship B = (1.05 ~ 1.12)b.

3. The thin-walled cup-shaped flexible wheel structure according to claim 1, characterized in that: The diameter d of the output connection flange (4) and the diameter D of the wave generator mounting port (2) have the relationship d = (0.56 ~ 0.64)D.

4. The thin-walled cup-shaped flexible wheel structure according to claim 1, characterized in that: The radius r of the semi-circular cup bottom (5) and the tooth width b of the transmission gear (3) have the relationship r = (0.38 ~ 0.46)b.

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