CN211501546U - Conical uniform-thickness flexible gear for harmonic gear transmission - Google Patents
Conical uniform-thickness flexible gear for harmonic gear transmission Download PDFInfo
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- CN211501546U CN211501546U CN201921646599.0U CN201921646599U CN211501546U CN 211501546 U CN211501546 U CN 211501546U CN 201921646599 U CN201921646599 U CN 201921646599U CN 211501546 U CN211501546 U CN 211501546U
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Abstract
The utility model discloses a be used for harmonic gear driven conical uniform thickness flexbile gear, including flexible ring gear (1), flexible ring gear (1) outer wall is equipped with conical gear (2). An included angle is formed between a gear pitch circle line of the conical gear (2) and the rotary central axis of the flexible gear ring (1); the included angle is the same as the deformation inclination angle of the flexible gear ring (1) in the long axis direction of the cam after the wave generator is installed. The tooth thickness Sa of the conical gear (2) is identical on different cross sections perpendicular to the pitch circle of the teeth of the conical gear (2). The utility model discloses can make the flexible gear teeth of a cogwheel all can keep good engaged state with the rigid wheel teeth of a cogwheel in all cross-sections of axial in the tooth width within range to prior art's not enough has been overcome.
Description
Technical Field
The utility model relates to a be used for harmonic gear driven conical uniform thickness flexbile gear belongs to harmonic gear drive technical field.
Background
The harmonic gear transmission is a gear transmission mode for transmitting motion or power by using controllable elastic deformation waves generated by a flexible gear, mainly comprises three basic components of a flexible gear, a rigid gear and a wave generator, and has the working principle that: when the wave generator rotates continuously, the wave generator forces the flexible gear to deform and shift continuously, the teeth of the flexible gear are sequentially engaged and shifted from the engaged direction to the disengaged direction, and then disengaged from the disengaged direction and engaged from the disengaged direction to the engaged direction, so that the flexible gear rotates along the opposite direction of the wave generator.
In the prior art, a flexible gear in harmonic gear transmission generally adopts a cylindrical gear, a pitch circle line of a gear tooth of the flexible gear is parallel to a rotary central axis of the flexible gear, and the gear tooth thicknesses of the gear teeth are completely the same on different sections vertical to the pitch circle of the gear tooth, and the flexible gear has the following defects that: when a cam wave generator with a flexible bearing is installed in a flexible gear, because the flexible gear can generate an outward-expanding deformation inclination angle beta in the long axis direction, under the influence of the deformation inclination angle beta, the gear teeth of the flexible gear generate different deformation amounts along different axial sections, so that the position of the meshing point of the gear teeth of the flexible gear and the gear teeth of a rigid gear changes, although the flexible gear and the rigid gear keep a good meshing state in a certain section, the rest axial sections can generate the phenomenon of meshing interference or no meshing, finally, the contact area between the gear teeth of the flexible gear and the gear teeth of the rigid gear is reduced, the stress of the flexible gear is increased sharply, and the bearing capacity and the service life are greatly reduced. Therefore, the prior art has shortcomings and needs to be further improved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a conical uniform thickness flexbile gear for harmonic gear drive, after the flexbile gear is packed into to the cam wave generator that has flexible bearing, the flexbile gear is under the effect of the flaring deformation inclination beta that major axis direction produced, and the teeth of a cogwheel produces different deflection along the different cross-sections of axial, and the flexbile gear teeth and the rigid wheel teeth of a cogwheel after the deformation all keep good engaged state in all cross-sections of axial to overcome prior art's not enough.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model discloses a conical uniform thickness flexible gear for harmonic gear drive, including being used for installing the flexible ring gear who uses together with cam wave generator, be equipped with conical gear on flexible ring gear outer wall.
In the conical uniform-thickness flexible gear, an included angle is formed between a gear tooth pitch circle line of the conical gear and a rotary central axis of the flexible gear ring; the included angle is the same as the outwards-expanded deformation inclination angle generated by the flexible gear ring in the long axis direction after the cam wave generator is installed.
In the conical uniform-thickness flexible gear, the tooth thicknesses of the gear teeth are completely the same on different sections perpendicular to the pitch circle of the gear teeth of the conical gear.
Since the technical scheme is used, the utility model is compared with the prior art, the utility model discloses owing to adopt conical uniform thickness flexbile gear, the shape of flexbile gear is the thin wall taper shape, flexbile gear pitch circle line becomes a contained angle with flexbile gear rotary central axis, the size of value is the same with the flare deformation inclination that wave generator installation back flexbile gear produced in the major axis direction, and on the different cross-sections of perpendicular to flexbile gear teeth pitch circle, flexbile gear teeth tooth thickness Sa is identical completely, therefore, after the cam wave generator who has flexible bearing packs into the flexbile gear, the flexbile gear is under the influence at the flare deformation inclination that the major axis direction produced, conical uniform thickness flexbile gear has become cylindrical uniform thickness flexbile gear, in the tooth width within range, the flexbile gear teeth all can keep good meshing state with the flexbile gear teeth in all cross-sections of axial, thereby the not enough of the prior art has been overcome.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a front view of FIG. 1;
fig. 3 is a top view of fig. 1.
The labels in the figures are: 1-flexible gear ring, 2-conical gear.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
The utility model discloses a conical uniform-thickness flexible gear for harmonic gear transmission, as shown in figures 1-3, which comprises a flexible gear ring 1 used for being installed with a cam wave generator in the prior art, and a conical gear 2 is manufactured on the outer wall of the flexible gear ring 1 during manufacturing; an included angle is formed between a gear tooth pitch circle line of the conical gear 2 and the rotary central axis of the flexible gear ring 1, so that the included angle is the same as an outwards-expanded deformation inclination angle generated by the flexible gear ring 1 in the long axis direction after the cam wave generator is installed; the tooth thickness Sa of the conical gear 2 is identical on different cross sections perpendicular to the pitch circle of the teeth of the conical gear 2.
Examples
The cone-shaped uniform-thickness flexible gear used for harmonic gear transmission is in the shape of a thin-wall cone, the pitch circle line of the flexible gear forms an included angle with the rotation central axis of the flexible gear, the included angle is the same as the flare deformation inclination angle of the flexible gear generated in the long axis direction after a cam wave generator is installed, and the gear tooth thickness Sa of the cone-shaped gear 2 on the outer wall of the flexible gear ring 1 is completely the same on different sections vertical to the pitch circle of the gear teeth of the flexible gear.
Claims (2)
1. A conical iso-thick flexspline for a harmonic gear drive, comprising a flexible ring gear (1) for mounting with a cam-wave generator for use, characterised in that: the outer wall of the flexible gear ring (1) is provided with a conical gear (2); an included angle is formed between a gear pitch circle line of the conical gear (2) and the rotary central axis of the flexible gear ring (1); the included angle is the same as the camber deformation dip angle generated by the flexible gear ring (1) in the long axis direction after the cam wave generator is installed.
2. The conical uniform thickness flexspline for a harmonic gear drive of claim 1, wherein: the tooth thickness (Sa) of the gear teeth is identical on different cross sections perpendicular to the pitch circle of the gear teeth of the conical gear (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921646599.0U CN211501546U (en) | 2019-09-27 | 2019-09-27 | Conical uniform-thickness flexible gear for harmonic gear transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921646599.0U CN211501546U (en) | 2019-09-27 | 2019-09-27 | Conical uniform-thickness flexible gear for harmonic gear transmission |
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| Publication Number | Publication Date |
|---|---|
| CN211501546U true CN211501546U (en) | 2020-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921646599.0U Active CN211501546U (en) | 2019-09-27 | 2019-09-27 | Conical uniform-thickness flexible gear for harmonic gear transmission |
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| Country | Link |
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| CN (1) | CN211501546U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594387A (en) * | 2019-09-27 | 2019-12-20 | 贵州群建精密机械有限公司 | A conical equal-thickness flex wheel for harmonic gear transmission |
| CN112145651A (en) * | 2020-10-20 | 2020-12-29 | 贵州群建精密机械有限公司 | A method for improving the meshing performance of ultra-short cup harmonic flex wheel through tooth modification |
-
2019
- 2019-09-27 CN CN201921646599.0U patent/CN211501546U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594387A (en) * | 2019-09-27 | 2019-12-20 | 贵州群建精密机械有限公司 | A conical equal-thickness flex wheel for harmonic gear transmission |
| CN112145651A (en) * | 2020-10-20 | 2020-12-29 | 贵州群建精密机械有限公司 | A method for improving the meshing performance of ultra-short cup harmonic flex wheel through tooth modification |
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