Flexible gear connecting flange structure of harmonic reducer

Abstract

A flexible gear connecting flange structure of a harmonic reducer comprises a flexible gear, an output flange and a connecting flange, a center hole is formed in the bottom of the flexible gear, a shaft step is arranged in the center of the connecting flange, and the length of the shaft step is larger than the thickness of the center hole in the bottom of the flexible gear. The outer ring of the shaft step penetrates through the bottom center hole of the flexible gear, enters the center through hole of the output flange and is tightly attached to the inner wall of the output flange. According to the flexible gear connecting flange structure of the harmonic reducer, the shaft step of the connecting flange is long, the shaft step outer ring of the connecting flange can penetrate through the bottom of the flexible gear to enter the center through hole of the output flange and be tightly attached to the inner wall of the center through hole, and therefore the flexible gear connecting flange structure of the harmonic reducer can rapidly achieve concentricity of the flexible gear and the connecting flange, and the service life of the flexible gear is prolonged. The flexible gear and the output flange are convenient to assemble, the assembling difficulty is reduced, the concentricity of the flexible gear and the output flange is greatly improved, and therefore the service life of the flexible gear and the output flange is prolonged.

Description

Technical Field

[0001] The invention relates to a harmonic reducer component, in particular to a flexible wheel connecting flange structure of a harmonic reducer. Background Art

[0002] The existing flexible wheel connection flange structure of the harmonic reducer is as follows: Figure 1 As shown, it includes a flexible wheel 11, an existing connection flange 14', and an output flange 12, and the existing connection flange 14', the flexible wheel 11, and the output flange 12 are fixed together. Because the existing connection flange 14' does not contact the output flange 12, it only fits the bottom of the flexible wheel 11 with the output flange 12. Therefore, the connection flange 14' only plays the role of tightening the flexible wheel. When assembling the flexible wheel and the output flange, it is necessary to first use a special tooling fixture to achieve the initial concentricity requirements of the two. After the basic installation, an experienced master craftsman is required to fine-tune the two by using a meter to ensure the higher concentricity requirements of the two. Therefore, the entire assembly process of the bottom of the flexible wheel 11 and the output flange 12 is complex and has a long process. It has high requirements for the assembly personnel and is prone to unqualified concentricity, which can seriously reduce the product life. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the above-mentioned defects of the prior art and provide a flexible wheel connecting flange structure of a harmonic reducer, so that the flexible wheel and the output flange can be kept concentric more easily.

[0004] The technical solution adopted by the present invention to solve the above technical problems is: a flexible wheel connecting flange structure of a harmonic reducer, including a flexible wheel, an output flange, and a connecting flange. A center hole is set at the bottom of the flexible wheel, and an axial step is set at the center of the connecting flange, and its length is greater than the thickness of the center hole at the bottom of the flexible wheel. Therefore, the outer ring of the axial step passes through the center hole at the bottom of the flexible wheel and enters the center through hole of the output flange and is tightly attached to its inner wall.

[0005] Preferably, the flexible wheel, the output flange and the connecting flange are fixed together by fixing screws.

[0006] Compared with the prior art, the advantages of the present invention are as follows: the axial step of the connecting flange in the flexible wheel connecting flange structure of the harmonic reducer of the present invention is longer, and the outer ring of the axial step can pass through the bottom of the flexible wheel into the central through hole of the output flange and cling to the inner wall of the central through hole. Therefore, the flexible wheel connecting flange structure of the harmonic reducer can quickly achieve concentricity between the flexible wheel and the connecting flange. Therefore, the flexible wheel and the output flange are easy to assemble, the difficulty of assembly is reduced, and the concentricity of the flexible wheel and the output flange is greatly improved, thereby increasing their service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 The utility model is a structural schematic diagram of the flexible wheel connection flange structure of the existing harmonic reducer.

[0008] Figure 2 Schematic diagram of the flexible wheel connection flange structure of the harmonic reducer according to an embodiment of the present invention.

[0009] Figure 3 1 is a schematic structural diagram of a flange of a flexible wheel connection flange structure of a harmonic reducer according to an embodiment of the present invention.

[0010] Figure 4 It is a three-dimensional schematic diagram of the flexible wheel connection flange structure of the harmonic reducer according to an embodiment of the present invention.

[0011] The numbers in the figure are as follows: 11, flexible wheel; 12, output flange; 13, fixing screw; 14, connecting flange; 141, shaft step; 14', existing connecting flange. DETAILED DESCRIPTION

[0012] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0013] like Figure 2-4 As shown, a flexible wheel connecting flange structure of a harmonic reducer includes a flexible wheel 11, an output flange 12, fixing screws 13 and a connecting flange 14.

[0014] A central hole 111 is disposed at the bottom of the flexible wheel 11 .

[0015] An output flange 12 is disposed at the bottom of the flexible wheel 11 , and the output flange 12 can be connected to an external mechanism of the flexible wheel 11 .

[0016] The connecting flange 14 is provided with an axial step 141, the length of which is greater than the thickness of the center hole 111 at the bottom of the flexible wheel 11. When the bottom of the flexible wheel 11 is connected to the output flange 112, the outer ring of the axial step 141 passes through the center hole 111 at the bottom of the flexible wheel and enters the center through hole 121 of the output flange 12 and is tightly attached to the inner wall thereof, so that the flexible wheel 11 and the output flange 12 are kept concentric, and then the connecting flange 14, the bottom of the flexible wheel 11 and the output flange 12 are fixed together by fixing screws 13.

[0017] The fixing screws 13 are arranged at intervals along the circumference, so as to provide a more stable fixation.

Claims

1. A flexible wheel connection flange structure of a harmonic reducer, characterized in that: It includes a flexible wheel, an output flange, and a connecting flange. A center hole is set at the bottom of the flexible wheel, and an axial step is set at the center of the connecting flange. The length of the axial step is greater than the thickness of the center hole at the bottom of the flexible wheel. Therefore, the outer ring of the axial step passes through the center hole at the bottom of the flexible wheel and enters the center through hole of the output flange and is tightly attached to the inner wall thereof.

2. The flexible wheel connection flange structure of the harmonic reducer according to claim 1 is characterized in that: The flexible wheel, the output flange and the connecting flange are fixed together by fixing screws.

3. The flexible wheel connection flange structure of the harmonic reducer according to claim 2 is characterized in that: The fixing screws are arranged at intervals along the circumference.

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