CN212389670U - Flexible gapless spline transmission device - Google Patents
Flexible gapless spline transmission device Download PDFInfo
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- CN212389670U CN212389670U CN202020318906.9U CN202020318906U CN212389670U CN 212389670 U CN212389670 U CN 212389670U CN 202020318906 U CN202020318906 U CN 202020318906U CN 212389670 U CN212389670 U CN 212389670U
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Abstract
The utility model discloses a flexible gapless spline transmission device, which comprises a group of spline shafts and spline sleeves, wherein movable spline sleeves are sleeved on the spline shafts; the movable spline sleeve is provided with a plurality of adjusting sleeve teeth, the adjusting sleeve teeth are formed by extending inner spline teeth of the movable spline sleeve out of the end surface of the movable spline sleeve, the tooth ends of the extending adjusting sleeve teeth are processed with curved surfaces, the outer walls of the plurality of adjusting sleeve teeth are in the same cylindrical surface, and the diameter of the cylindrical surface is the same as that of the tooth grooves of the spline sleeve; the spline sleeve teeth on the inner wall of one end of the corresponding spline sleeve are cut, the cut end faces are curved surfaces corresponding to the adjusting sleeve teeth, and the shape and the size of the curved surfaces are matched with those of the adjusting sleeve teeth. The utility model discloses can effectually eliminate or alleviate the drunkenness in the spline transmission process to eliminate or alleviate the drunkenness, improve the ride comfort, effectively reduce unnecessary mechanical wear, and alleviate the noise.
Description
Technical Field
The utility model relates to a design, the assembly field of spline, specific flexible zero clearance spline transmission.
Background
In the prior art, the spline is applied to the occasions of coaxial torque transmission of rotating machinery, the spline sleeve is matched with the teeth of the spline shaft, and the spline is simple in structure, mature in process and low in cost. However, as the spline pair needs a certain length for effective matching, for the convenience of assembly, a certain gap is reserved between the spline shaft and the spline housing on the tooth side, and when the spline shaft is used as a driving part for driving in a normal state, the spline shaft and the spline housing are matched to form a tooth surface; when the spline housing is used as a driving part for driving, the spline housing needs to rotate for an angle relative to the spline shaft, and after the clearance between the tooth sides is eliminated, the spline shaft is driven by matching the other tooth side. In the process of active and passive relative conversion of the spline shaft and the spline sleeve, tooth side gaps need to be eliminated and then contact is carried out, and discontinuous torque transmission exists, so that impact and noise are generated in the power transmission process, the smoothness of the whole mechanism is affected, and the fast abrasion and noise are caused. This increases the backlash of the spline, and the situation is further worsened over a long period of time.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the not enough of prior art, provide a flexible zero clearance spline transmission.
The utility model adopts the technical proposal that:
a flexible gapless spline transmission device comprises a group of spline shafts and spline sleeves, wherein the spline shafts and the spline sleeves are matched, movable spline sleeves are further sleeved on the spline shafts, supporting table tops are arranged on the spline shafts, and the spline shafts, the spline sleeves and the movable spline sleeves are in transmission fit through common splines;
the movable spline sleeve is provided with a plurality of adjusting sleeve teeth, the adjusting sleeve teeth are formed by extending inner spline teeth of the movable spline sleeve out of the end surface of the movable spline sleeve, the tooth ends of the extending adjusting sleeve teeth are processed with curved surfaces, the outer walls of the plurality of adjusting sleeve teeth are in the same cylindrical surface, and the diameter of the cylindrical surface is the same as that of the tooth grooves of the spline sleeve;
cutting spline sleeve teeth on the inner wall of one end of the corresponding spline sleeve, wherein the cut end surface is a curved surface corresponding to the adjusting sleeve teeth, and the shape and the size of the curved surface are matched with those of the adjusting sleeve teeth;
when the adjustable spline sleeve is installed, the spline shaft is sleeved with the return spring, the return spring is in a compressed state, and two ends of the return spring are respectively in contact with the supporting table surface of the spline shaft and the end surface of the movable spline sleeve without the adjusting sleeve teeth.
The flexible gapless spline transmission device is characterized in that:
when the return spring is in a compressed state, two ends of the return spring are in contact with the supporting platform surface of the spline shaft and the end surface of the movable spline sleeve, meanwhile, the other end surface of the movable spline sleeve is not in contact with the adjacent end surface of the spline sleeve, a gap is reserved between the other end surface of the movable spline sleeve and the adjacent end surface of the spline sleeve, and at the moment, the curved surface of the adjusting sleeve tooth is in contact with the curved surface of the.
Preferably, the gap is set to 0.5-5 mm.
Preferably, the tooth wall of the movable spline housing is in sliding fit with the tooth wall of the spline shaft.
Preferably, when the return spring is in a compressed state, a tooth end curved surface of each of the plurality of adjusting sleeve teeth is in contact with a tooth end curved surface corresponding to the spline sleeve to form a matching surface C, a tooth side of each of the adjusting sleeve teeth is in contact with a tooth side of the corresponding spline shaft to form a matching surface a, a tooth side of each of the spline sleeve is in contact with a tooth side of the corresponding spline shaft to form a matching surface B, and the three matching surfaces A, B, C are in direct contact and have no gap under the action of the return spring.
Preferably, the tooth end curved surface of the adjusting sleeve tooth is contacted with the curved surface of the spline sleeve tooth end to form a matching surface C which is a plane, and the plane forms an included angle of 15-45 degrees with the axial lead of the spline shaft.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model belongs to a flexible zero clearance spline structure, on the basis of traditional spline, add a movable spline housing, make integral key shaft and movable spline housing, integral key shaft and spline housing and movable spline housing and spline housing form the cooperation respectively, can eliminate the fit clearance between the whole spline mechanism when carrying out power transmission, make the moment of torsion transmission go on in succession under initiative or passive condition, eliminate or alleviate the drunkenness of spline transmission in-process, thereby eliminate or alleviate the drunkenness, improve the ride comfort, effectively reduce unnecessary mechanical wear, and alleviate the noise.
Description of the drawings:
FIG. 1 is a schematic view of the overall fitting structure of the present invention;
FIG. 2 is a schematic view of the spline shaft of the present invention;
FIG. 3 is a schematic structural view of the movable spline housing of the present invention;
FIG. 4 is a schematic structural view of the spline housing of the present invention;
FIG. 5 is a schematic view showing the turning and force application of the spline shaft as the driving member in the embodiment of the present invention;
FIG. 6 is a schematic view of the spline housing as a driving member for turning and applying force in the embodiment of the present invention;
in the drawings: 1-spline shaft 2-spline housing 3-movable spline housing 4-adjusting sleeve teeth 5-return spring 101-supporting table surface A-matching surface A B-matching surface B C-matching surface C.
The specific implementation mode is as follows:
the invention will be described in further detail by way of example with reference to the accompanying drawings:
a flexible gapless spline transmission device comprises a group of spline shafts 1 and spline sleeves 2 which are matched, movable spline sleeves 3 are further sleeved on the spline shafts 1, supporting table boards 101 are arranged on the spline shafts 1, when the flexible gapless spline transmission device is actually installed and used, the supporting table boards 101 can be replaced by other adjacent parts which are installed at the same time (such as parts for installing the spline shafts 1), and the spline shafts 1, the spline sleeves 2 and the movable spline sleeves 3 are in transmission fit through common splines;
a plurality of adjusting sleeve teeth 4 are arranged on the movable spline housing 3, the adjusting sleeve teeth 4 are formed by extending inner spline teeth of the movable spline housing 3 out of the end surface of the movable spline housing 3, the tooth ends of the extending adjusting sleeve teeth 4 are processed with curved surfaces (the special shape of the curved surfaces is a plane), the outer walls of the plurality of adjusting sleeve teeth 4 are in the same cylindrical surface, and the diameter of the cylindrical surface is the same as that of a spline housing tooth groove, as shown in fig. 3;
the spline sleeve teeth on the inner wall of one end of the corresponding spline sleeve 2 are cut, the cut end faces are curved surfaces (the special shape of the curved surfaces is a plane) corresponding to the adjusting sleeve teeth 4, and the shape and the size of the curved surfaces are matched with those of the adjusting sleeve teeth 4, as shown in fig. 4;
during installation, the spline shaft 1 is sleeved with the return spring 5, the return spring 5 is in a compressed state, and two ends of the return spring 5 are respectively contacted with the supporting table surface 101 of the spline shaft 1 and the end surface of the movable spline sleeve 3 without the adjusting sleeve teeth.
When the return spring 5 is in a compressed state, two ends of the return spring 5 contact the supporting table 101 of the spline shaft 1 and the end face (the end without the adjusting sleeve teeth) of the movable spline housing 3, meanwhile, the other end face of the movable spline housing 3 is not in contact with the adjacent end face of the spline housing 2, a gap is reserved, the gap is set to be 0.5-5mm, and at the moment, the curved surface of the adjusting sleeve teeth 4 contacts the curved surface of the spline housing teeth.
The tooth wall of the movable spline housing 3 is in sliding fit with the tooth wall of the spline shaft 1.
When the return spring 5 is in a compressed state, a tooth end curved surface of each adjusting sleeve tooth 4 in the plurality of adjusting sleeve teeth 4 is in contact with a tooth end curved surface corresponding to the spline sleeve 2 to form a matching surface C, a tooth side of each adjusting sleeve tooth 4 is in contact with a tooth side of the corresponding spline shaft 1 to form a matching surface A, a tooth side of each spline sleeve 2 is in contact with a tooth side of the corresponding spline shaft 1 to form a matching surface B, and the three matching surfaces A, B, C are in direct contact and have no gap under the action of the return spring 5.
The curved surface of the tooth end of the adjusting sleeve tooth 4 is contacted with the curved surface of the tooth end of the spline sleeve 1 to form a matching surface C which is a plane, and the plane forms an included angle of 15-45 degrees with the axial lead of the spline shaft 1.
As shown in fig. 5, under normal conditions, when the spline shaft 1 is a driving part, the driving force is transmitted from the mating surface B, at this time, when the driving force is transmitted from the spline shaft 1 to the spline housing 2 through the mating surface B, the driving force continues to be transmitted backward through the spline housing 2, and the movable spline housing 3 does not undertake the power transmission task at this time;
as shown in fig. 6, when the spline housing 2 is an active member, the driving force is transmitted to the spline shaft 1 through the mating surfaces C and a, in which case the mating surface B may not be released from contact (the driving force is small); if the transmitted driving force is large, the matching surface B has the possibility of releasing the contact, at this time, the component force F3 of the positive pressure F on the matching surface C in the axial direction must overcome the acting force F1 of the return spring 5 at the rear end of the movable spline housing 3 to force the movable spline housing 3 to move backwards, and in the process that the movable spline housing 3 moves backwards, the potential accumulation capacity of the return spring 5 gradually increases F1, which is helpful for the utility model to recover the normal contact fit of each part of the spline pair, increase the flexible contact of the spline pair, and eliminate or reduce the impact and the noise. Meanwhile, the component force F2 of the positive pressure F on the mating surface C of the movable spline housing 3 and the tooth end of the spline housing 1 in the radial direction is also increased due to the potential accumulation capacity of the return spring 5, the component force F2 acts on the curved surface of the inner spline tooth end of the movable spline housing 3, then acts on the spline shaft 1 through the mating surface a of the spline shaft 1 and the movable spline housing 3, and the spline shaft 1 can obtain larger and larger acting force in the process that the spline housing 1 pushes the movable spline housing 3 to move backwards and eliminate the clearance with the tooth side of the spline shaft 1, so that the spline shaft 1 has an increased tendency of accelerating rotation, and the impact and noise of the spline housing 2 on the spline shaft 1 are eliminated or reduced.
No matter use integral key shaft 1 as the active piece or use spline housing 2 as the active piece, the utility model discloses a return spring 5 in the spline is vice all has certain potential energy at any time, can maintain or resume the mutually supporting relation between integral key shaft 1, movable spline housing 3, the spline housing 2 gradually, eliminates the clearance of the vice transmission in-process of spline.
According to the foregoing, when integral key shaft 1 and spline housing 2 provide the drive power of opposite direction, movable spline housing 3 can guarantee equally with return spring 5's setting the utility model discloses flexible zero clearance spline mechanism realizes flexible no tooth flank clearance transmission.
The above embodiments are merely preferred embodiments of the present invention, and in addition, other implementation manners of the present invention are also possible. It should be understood that any obvious modifications and adaptations thereof may be made without departing from the spirit of the present invention and are intended to be within the scope of the present invention.
Claims (6)
1. The utility model provides a flexible zero clearance spline transmission, includes a set of integral key shaft, spline housing, and the two cooperatees, its characterized in that:
the spline shaft is also sleeved with a movable spline housing, a support table board is arranged on the spline shaft, and the spline shaft, the spline housing and the movable spline housing are in transmission fit through a common spline;
the movable spline sleeve is provided with a plurality of adjusting sleeve teeth, the adjusting sleeve teeth are formed by extending inner spline teeth of the movable spline sleeve out of the end surface of the movable spline sleeve, the tooth ends of the extending adjusting sleeve teeth are processed with curved surfaces, the outer walls of the plurality of adjusting sleeve teeth are in the same cylindrical surface, and the diameter of the cylindrical surface is the same as that of the tooth grooves of the spline sleeve;
cutting spline sleeve teeth on the inner wall of one end of the corresponding spline sleeve, wherein the cut end surface is a curved surface corresponding to the adjusting sleeve teeth, and the shape and the size of the curved surface are matched with those of the adjusting sleeve teeth;
when the adjustable spline sleeve is installed, the spline shaft is sleeved with the return spring, the return spring is in a compressed state, and two ends of the return spring are respectively in contact with the supporting table surface of the spline shaft and the end surface of the movable spline sleeve without the adjusting sleeve teeth.
2. A flexible zero clearance spline drive according to claim 1, wherein:
when the return spring is in a compressed state, two ends of the return spring are in contact with the supporting platform surface of the spline shaft and the end surface of the movable spline sleeve, meanwhile, the other end surface of the movable spline sleeve is not in contact with the adjacent end surface of the spline sleeve, a gap is reserved between the other end surface of the movable spline sleeve and the adjacent end surface of the spline sleeve, and at the moment, the curved surface of the adjusting sleeve tooth is in contact with the curved surface of the.
3. A flexible zero clearance spline drive according to claim 2, wherein:
the gap is set to 0.5-5 mm.
4. A flexible zero clearance spline drive according to claim 1, wherein:
and the tooth wall of the movable spline sleeve is in sliding fit with the tooth wall of the spline shaft.
5. A flexible zero clearance spline drive according to claim 1, wherein:
when the return spring is in a compressed state, a tooth end curved surface of each adjusting sleeve tooth in the plurality of adjusting sleeve teeth is in contact with a curved surface of a tooth end corresponding to the spline sleeve to form a matching surface C, a tooth side of each adjusting sleeve tooth is in contact with a tooth side of the corresponding spline shaft to form a matching surface A, a tooth side of each spline sleeve is in contact with a tooth side of the corresponding spline shaft to form a matching surface B, and the three matching surfaces A, B, C are in direct contact and have no gap under the action of the return spring.
6. A flexible zero clearance spline drive according to claim 5, wherein:
the tooth end curved surface of the adjusting sleeve tooth is contacted with the curved surface of the spline sleeve tooth end to form a matching surface C which is a plane, and the plane and the axial lead of the spline shaft form an included angle of 15-45 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020318906.9U CN212389670U (en) | 2020-03-16 | 2020-03-16 | Flexible gapless spline transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020318906.9U CN212389670U (en) | 2020-03-16 | 2020-03-16 | Flexible gapless spline transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212389670U true CN212389670U (en) | 2021-01-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020318906.9U Active CN212389670U (en) | 2020-03-16 | 2020-03-16 | Flexible gapless spline transmission device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212389670U (en) |
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2020
- 2020-03-16 CN CN202020318906.9U patent/CN212389670U/en active Active
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