Split wave generator and harmonic reduction device

Abstract

The utility model discloses a kind of split wave generator harmonic reducer devices, comprising: mandrel, the radial of the mandrel has protruding installation part, the first guide rail slot is on the installation part;Input shaft, the input shaft clearance sleeve is set outside mandrel, the end surface of the input shaft has second guide rail slot;Cross slider, the first slider and second slider are on the cross slider, the cross slider is sleeved on mandrel, and first slider is loaded into first guide rail slot, and second slider is loaded into second guide rail slot;The input shaft is provided with screw hole along radial, screw is screwed into the screw hole, and the end surface of screw and cross slider is contacted to fasten cross slider.Harmonic reducer device includes the split wave generator described above, the outer ring of the input shaft is connected with the bearing of harmonic reducer the utility model split wave generator and harmonic reduction device, can be separately more worn cross slider or mandrel, without overall disassembly, reduce maintenance cost, can better transmission movement and power, simultaneously can also reduce wear and tear and improve accuracy.

Description

Technical Field

[0001] This utility model relates to the field of precision transmission technology, specifically to wave generators, and more particularly to a split-type wave generator and a harmonic deceleration device. Background Technology

[0002] The core principle of a harmonic reducer is to achieve interlocking gear motion between the rigid and flexible gears through the elastic deformation of the flexible gear, thus forming a precision transmission. A typical structure consists of three parts: a wave generator, a flexible gear, and a rigid gear. As the core component of the harmonic reducer, the accuracy of the wave generator directly determines the reducer's transmission efficiency, hysteresis control, and service life. Traditional harmonic reducers use an integral wave generator design. Over long-term operation, excessive local stress on the flexible gear can easily lead to micro-cracks, affecting rigidity and accuracy, thus reducing lifespan. Furthermore, the integral wave generator requires complete replacement, resulting in high maintenance costs and inconvenient disassembly and assembly. Utility Model Content

[0003] The technical problem to be solved by this utility model is: in order to solve the technical problems of the integral wave generator in the prior art, this utility model provides a split wave generator and a harmonic deceleration device, which can independently reduce the wear of the cross slider or spindle without the need for overall disassembly, reduce maintenance costs, better transmit motion and power, and at the same time reduce wear and improve accuracy.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a split-type wave generator, comprising: a spindle, the spindle having a protruding mounting portion in the radial direction, the mounting portion having a first guide groove; an input shaft, the input shaft being sleeved on the outside of the spindle, the end face of the input shaft having a second guide groove; a cross slider, the cross slider having a first slider and a second slider, the cross slider being sleeved on the spindle, the first slider being inserted into the first guide groove, and the second slider being inserted into the second guide groove; the input shaft having a screw hole in the radial direction, a screw being screwed into the screw hole, the screw contacting the end face of the cross slider to secure the cross slider.

[0005] This utility model features a body-type wave generator with a detachable connection between the input shaft and the cross slider via screws. This allows for better transmission of motion and power, while also reducing wear and improving accuracy. Radial adaptive adjustment is achieved through pre-tightening screws, and it also facilitates the replacement of worn cross sliders or spindles.

[0006] Furthermore, in order to reduce stress concentration during transmission, the inner ring of the cross slider and the outer ring of the mandrel are fitted with a clearance.

[0007] Furthermore, in order to reduce stress concentration during transmission, the left side wall of the cross slider and the right side wall of the input shaft are fitted with a clearance.

[0008] Furthermore, to avoid transmission lag, the gap between the first slider and the first guide groove and the second slider and the second guide groove is ≤5 micrometers.

[0009] Furthermore, the number of the first slider, the second slider, the first guide rail groove, and the second guide rail groove are all two. Thus, by connecting the input shaft and the spindle through two sets of mutually perpendicular keyways, an automatic self-aligning mechanism is formed, which can compensate for the coaxiality deviation between the motor shaft and the wave generator, resulting in smooth and precise transmission.

[0010] Furthermore, the first and second sliders, as well as the first and second guide rail grooves, are arranged in a cross shape. Thus, the orthogonally distributed sliders constrain each other during movement, automatically adjusting the contact pressure and preventing overload damage to the input shaft.

[0011] Furthermore, the opposing end faces of the first slider and the first guide groove, as well as the second slider and the second guide groove, are all arc-shaped surfaces.

[0012] The technical solution adopted by this utility model to solve its technical problem is: a harmonic reducer device, including the above-mentioned split wave generator, wherein the outer ring of the input shaft is connected to the bearing of the harmonic reducer.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The present invention relates to a split-type wave generator and a harmonic deceleration device. The wave generator is composed of a cross slider, a spindle, and an input shaft. The cross slider and the input shaft are connected by screws to form a detachable structure, which facilitates the replacement of worn parts, reduces maintenance costs, and can better transmit motion and power, while also reducing wear and improving accuracy.

[0015] 2. The split wave generator and harmonic deceleration device of this utility model reduce stress concentration during motion transmission by fitting the cross slider with the inner wall of the input shaft and the side wall of the spindle through gaps, and achieves radial adaptive adjustment by using pre-tightening screws.

[0016] 3. The split wave generator and harmonic deceleration device of this utility model have orthogonally distributed sliders that constrain each other during movement, automatically adjust the contact pressure, avoid overload and damage to the input shaft, significantly improve the assembly portability, transmission accuracy and service life of the harmonic reducer, and can compensate for the coaxiality deviation between the motor shaft and the wave generator, so that the transmission is smooth and precise. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1This is a schematic diagram of the split-type wave generator and harmonic deceleration device of this utility model;

[0019] Figure 2 for Figure 1 A sectional view;

[0020] Figure 3 This is a schematic diagram of the cross-shaped slider.

[0021] Figure 4 This is a schematic diagram of the input shaft structure;

[0022] Figure 5 This is a schematic diagram of the mandrel structure;

[0023] Figure 6 This is a cross-sectional view of a harmonic deceleration device.

[0024] In the picture:

[0025] 1. Mandrel; 11. Mounting part; 12. First guide rail groove;

[0026] 2. Input shaft; 21. Second guide rail groove; 22. Screw hole;

[0027] 3. Cross slider; 31. First slider; 32. Second slider;

[0028] 4. Harmonic reducer; 41. Bearing. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0030] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] like Figures 1 to 5 As shown, a split-type wave generator includes: a spindle 1, an input shaft 2, and a cross slider 3. In this embodiment, the spindle 1, input shaft 2, and cross slider 3 are connected separately, which allows for easy replacement and disassembly.

[0033] Specifically, the mandrel 1 has a protruding mounting portion 11 in the radial direction, and the mounting portion 11 has a first guide groove 12. The input shaft 2 is fitted onto the outside of the mandrel 1 with clearance, and the end face of the input shaft 2 has a second guide groove 21. The cross slider 3 has a first slider 31 and a second slider 32. The cross slider 3 is fitted onto the mandrel 1, and the first slider 31 is inserted into the first guide groove 12, and the second slider 32 is inserted into the second guide groove 21. The input shaft 2 has a screw hole 22 in the radial direction, and a screw is screwed into the screw hole 22. The screw contacts the end face of the cross slider 3 to secure the cross slider 3. The input shaft 2 and the cross slider 3 are detachably assembled using screws, which can better transmit motion and power, while also reducing wear and improving accuracy.

[0034] Specifically, the inner ring of the cross slider 3 and the outer ring of the spindle 1 are in clearance fit, as are the left side wall of the cross slider 3 and the right side wall of the input shaft 2. Preferably, the opposing end faces of the first slider 31 and the first guide groove 12, as well as the second slider 32 and the second guide groove 21, are all arc-shaped surfaces. The first slider 31 and the second slider 32 are respectively embedded in the first guide groove 12 and the second guide groove 21. The cross slider 3 is in clearance fit with the inner wall of the input shaft 2 and the outer wall of the spindle 1, reducing stress concentration during motion transmission. Furthermore, the radial adaptive adjustment of the cross slider 3 is achieved through the pre-tightening screw.

[0035] Specifically, the first slider 31 and the second slider 32 are arranged in a cross shape between each other and between the first guide rail groove 12 and the second guide rail groove 21. The synergistic design of the split structure and the cross slider 3 allows the cross slider 3 to slide independently in orthogonal directions, which significantly improves the assembly portability, transmission accuracy and service life of the harmonic reducer.

[0036] Specifically, during the assembly process, the gap between the first slider 31 and the first guide rail groove 12 and the second slider 32 and the second guide rail groove 21 is ≤5 micrometers to avoid transmission lag.

[0037] Specifically, there are two of each of the following: the first slider 31, the second slider 32, the first guide groove 12, and the second guide groove 21. Thus, two sets of mutually perpendicular keyways connect to the input shaft 2 and the spindle 1, forming an automatic self-aligning mechanism. This compensates for coaxiality deviations between the motor shaft and the wave generator, resulting in smooth and precise transmission. The orthogonally distributed sliders constrain each other during movement, automatically adjusting the contact pressure to prevent overload and damage to the input shaft 2.

[0038] like Figure 6 As shown, a harmonic reducer device includes the aforementioned split-type wave generator, with the outer ring of the input shaft 2 connected to the bearing 41 of the harmonic reducer 4. The harmonic reducer 4 can be an existing harmonic reducer, which will not be described in detail here.

[0039] In summary, the split-type wave generator and harmonic reduction device can independently smooth the worn cross slider or spindle without overall disassembly, reducing maintenance costs. It can better transmit motion and power, while also reducing wear, improving accuracy, providing better stress distribution, reducing stress concentration, and extending overall lifespan. It is suitable for high-precision transmission applications such as industrial robots, aerospace, and four-axis rotary tables.

[0040] The above description is based on the preferred embodiments of this utility model. Through the above description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined by the scope of the claims.

Claims

1. A split-type wave generator, characterized in that, include: The mandrel (1) has a protruding mounting portion (11) in the radial direction, and the mounting portion (11) has a first guide groove (12). Input shaft (2), the input shaft (2) is fitted with a gap on the outside of the spindle (1), and the end face of the input shaft (2) has a second guide groove (21). A cross slider (3) has a first slider (31) and a second slider (32). The cross slider (3) is sleeved on the spindle (1), and the first slider (31) is installed in the first guide groove (12) and the second slider (32) is installed in the second guide groove (21). The input shaft (2) has a screw hole (22) in the radial direction. A screw is screwed into the screw hole (22) and the screw contacts the end face of the cross slider (3) to fasten the cross slider (3).

2. The split-type wave generator according to claim 1, characterized in that, The inner ring of the cross slider (3) and the outer ring of the mandrel (1) are in clearance fit.

3. The split-type wave generator according to claim 2, characterized in that, The left side wall of the cross slider (3) and the right side wall of the input shaft (2) are in clearance fit.

4. The split-type wave generator according to any one of claims 1-3, characterized in that, The gap between the first slider (31) and the first guide groove (12) and the second slider (32) and the second guide groove (21) is ≤5 micrometers.

5. The split-type wave generator according to claim 4, characterized in that, The number of the first slider (31), the second slider (32), the first guide rail groove (12), and the second guide rail groove (21) are all two.

6. The split-type wave generator according to claim 5, characterized in that, The first slider (31) and the second slider (32) are arranged in a cross shape between each other and between the first guide rail groove (12) and the second guide rail groove (21).

7. The split-type wave generator according to claim 6, characterized in that, The opposing end faces of the first slider (31) and the first guide rail groove (12), as well as the second slider (32) and the second guide rail groove (21), are all arc-shaped surfaces.

8. A harmonic deceleration device, characterized in that, The split wave generator according to any one of claims 1-7 is wherein the outer ring of the input shaft (2) is connected to the bearing (41) of the harmonic reducer (4).

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