CN211852536U - High-precision centering connecting shaft structure - Google Patents
High-precision centering connecting shaft structure Download PDFInfo
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- CN211852536U CN211852536U CN201922461908.3U CN201922461908U CN211852536U CN 211852536 U CN211852536 U CN 211852536U CN 201922461908 U CN201922461908 U CN 201922461908U CN 211852536 U CN211852536 U CN 211852536U
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- spline
- shaft
- spline housing
- end part
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Abstract
The utility model discloses a high-precision centering coupling structure, which comprises a shaft and a spline housing combined and connected with the shaft; the inner part of the spline sleeve is processed into an internal spline by a broach; the end part of the shaft is provided with a central hole; the end part of the spline housing is provided with a round hole. The processing diameter of the shaft end part is consistent with that of the spline sleeve, and a round hole is adopted for positioning; the round hole in the spline sleeve is coaxial with the inner spline, and the diameter of the round hole is in interference fit with the diameter of the inner spline. The broach has the beneficial effects that through test verification and practical use, the spline housing internal spline is processed by the broach, so that the broach is high in precision, high in processing efficiency and low in cost. After the shaft and the spline housing are assembled, the precision requirement can be improved in the subsequent processing.
Description
Technical Field
The utility model relates to a high accuracy centering shaft coupling structure belongs to shaft coupling structure's mechanical coupling technical field.
Background
The prior two-shaft connection has more extensive application: the two-shaft connection which requires higher connection precision, large bearing capacity and good centering performance and guiding performance is mainly connected by the spline. The two-shaft connection which requires higher connection precision, large bearing capacity and good centering performance and guiding performance is mainly connected by a spline. In the connection requiring high precision, the involute spline has the advantages of more teeth, thick tooth root, strong bearing capacity, easy automatic centering, high mounting precision, high shaft rigidity and the like, and is widely used. However, the spline connection, especially the internal spline, is difficult to process and complicated in process, and the precision and the qualification rate of the spline connection are often not up to the requirements
The existing processing of the internal spline shaft at the end part of the shaft generally adopts the following steps: slotting and extruding. The slotting machining process comprises the following steps: the efficiency is lower, processing equipment is complicated, equipment precision requirement is higher, and the processing cost of the internal spline at the end part of the shaft is higher. The extrusion processing technology comprises the following steps: high efficiency, simple processing equipment and suitability for mass production. However, the stress of the extrusion die is large during extrusion, and the center hole is generally an R-shaped center hole due to the strength of the extrusion die. As shown in fig. 1, since the R-shaped center hole is in line contact with the stress surface of the ejector pin, the stress surface is small, and when the subsequent process of fixing the machining shaft by the ejector pin, the machining precision of the subsequent process is affected, and the form and position tolerance of the size of the subsequent process relative to the R-shaped center hole is increased, that is, the form and position tolerance of the subsequent process of the internal spline shaft relative to the internal spline is increased, which results in the reduction of the precision of the internal spline in use.
SUMMERY OF THE UTILITY MODEL
To the problem that above-mentioned prior art exists, the utility model provides a high accuracy centering axle structure even can make the processing technology simple change, reduces the processing degree of difficulty, improves qualification rate and hookup precision.
In order to realize the purpose, the utility model discloses a technical scheme is: a high-precision centering coupling structure comprises a shaft and a spline sleeve which is connected with the shaft in a combined manner; the inner part of the spline sleeve is processed into an internal spline by a broach; the end part of the shaft is provided with a central hole; the end part of the spline housing is provided with a round hole.
Further, the processing diameter of the shaft end part is consistent with that of the spline sleeve, and a round hole is adopted for positioning; the round hole in the spline sleeve is coaxial with the inner spline, and the diameter of the round hole is in interference fit with the diameter of the inner spline.
Further, the end part of the shaft is processed into an external spline; the inner part of the spline sleeve is processed into an internal spline by a broach; an inner circle is processed at the end part of the spline sleeve; the external spline of the shaft end and the internal spline of the spline sleeve are positioned by spline teeth.
Further, the end part of the shaft is processed into an external spline; the inner part of the spline sleeve is processed into an internal spline by a broach; a round through hole is formed in the spline housing; an arc-shaped groove is formed in the middle of the shaft; the processing diameter of the shaft end part is consistent with that of the round through hole of the spline housing, and the shaft end part is fixedly inserted into the round through hole formed in the spline housing through matching connection.
The utility model has the advantages that: the spline sleeve inner spline is processed by the broach, so that the precision is high, the processing efficiency is high, and the cost is low. After the shaft and the spline housing are assembled, the precision requirement can be improved in the subsequent processing.
Drawings
Fig. 1 is a schematic structural diagram of the background art of the present invention;
FIG. 2 is a schematic view of the circle positioning structure of the present invention;
FIG. 3 is a schematic view of the round positioning shaft of the present invention;
FIG. 4 is a schematic structural view of the round positioning spline housing of the present invention;
FIG. 5 is a schematic view of the spline housing of the present invention showing the positioning structure of the round hole;
FIG. 6 is a schematic view of the spline housing with a round hole positioning shaft according to the present invention;
FIG. 7 is a schematic structural view of the round hole positioning spline housing of the present invention;
FIG. 8 is a schematic view of the spline housing of the present invention showing a positioning structure for preventing round holes;
FIG. 9 is a schematic view of the spline housing of the present invention showing the structure of the round hole positioning shaft;
fig. 10 is a schematic structural view of the spline housing of the present invention without a round hole positioning spline housing.
In the figure: 1. the shaft comprises a shaft body 1-1, a central hole 2, a spline housing 2-1 and a circular hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail through the accompanying drawings and embodiments. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein in the specification of the present invention are for the purpose of describing particular embodiments only and are not intended to limit the present invention.
As shown in fig. 2, 3 and 4, a high-precision centering coupling structure comprises a shaft 1 and a spline housing 2 connected with the shaft 1 in a combined manner; the inner part of the spline housing 2 is processed into an internal spline by a broach; the end part of the shaft 1 is provided with a central hole 1-1; the end part of the spline housing 2 is provided with a round hole 2-1.
The processing diameter of the end part of the shaft 1 is consistent with that of the spline housing 2, and a round hole is adopted for positioning; the round hole in the spline housing 2 is coaxial with the internal spline, and the diameter of the round hole is in interference fit with the diameter of the internal spline.
As shown in fig. 5, 6 and 7, the end of the shaft 1 is processed into an external spline; the inner part of the spline housing 2 is processed into an internal spline by a broach; an inner circle is processed at the end part of the spline housing 2; and the external spline at the end of the shaft 1 and the internal spline of the spline housing 2 are positioned by spline teeth.
As shown in fig. 8, 9 and 10, the end of the shaft 1 is processed into an external spline; the inner part of the spline housing 2 is processed into an internal spline by a broach; a round through hole is arranged in the spline housing 2; an arc-shaped groove is formed in the middle of the shaft 1; the processing diameter of the end part of the shaft 1 is consistent with that of the round through hole of the spline housing 2, and the end part of the shaft 1 is fixedly inserted into the round through hole formed in the spline housing 2 through matching connection.
The utility model provides a high accuracy centering involute spline structure, this structure has improved the hookup precision of hookup between the diaxon, and this high accuracy centering axle structure mainly includes axle 1 and spline housing 2 and constitutes.
This patent is processed into axle 1 and spline housing 2 respectively with the integral key shaft, and spline housing 2 is inside to be processed into internal spline with the broach. The patent has the following three connection modes:
1. circle location
The end of the shaft 1 is machined to a diameter phi and the spline housing 2 is machined to a diameter phi as shown in figure 2. The round hole phi of the spline housing is coaxial relative to the spline housing inner spline, and the two diameters are in interference fit.
When the spline housing 2 is interference-assembled to the shaft 1, the shaft 1 can be highly accurately fitted with respect to the spline housing 2, as shown in fig. 3. And because the end of the shaft 1 can use an A-type or B-type center hole in the subsequent processing of the spline shaft, the processing precision and the processing precision of the subsequent process can be guaranteed, the form and position tolerance of the process size relative to the internal spline can also be guaranteed, and the precision of the internal spline in use is improved.
2. Spline positioning
The spline positioning can be two types
2.1 spline housing round hole
The end part of the shaft 1 is processed into an external spline, the spline housing 2 is processed into an internal spline, and the end part of the spline housing 2 is processed into an internal circle phi, as shown in figure 4.
When the shaft 1 and the spline housing 2 are assembled, the inner circle phi of the spline housing 2 gives way to the outer diameter of the end part of the shaft 1, and the outer spline of the end of the shaft 1 and the inner spline of the spline housing 2 are positioned by spline teeth, so that high precision can be obtained by utilizing the centering function of the splines, as shown in fig. 5. And because the end part of the shaft can use the A-type or B-type center hole in the subsequent processing of the spline shaft, the processing precision and the processing precision of the subsequent process can be guaranteed, the form and position tolerance of the process size relative to the internal spline can also be guaranteed, and the precision of the internal spline in use is improved.
2.2 spline housing does not let round hole
The end of the shaft 1 is machined into an external spline and the spline housing 2 is machined into an internal spline as shown in fig. 6.
When the shaft 1 and the spline housing 2 are assembled, the external spline at the end of the shaft 1 and the internal spline of the spline housing 2 are positioned by spline teeth, and high precision can be obtained by utilizing the centering function of the splines, as shown in fig. 7. And because the end part of the shaft can use the A-type or B-type center hole in the subsequent processing of the spline shaft, the processing precision and the processing precision of the subsequent process can be guaranteed, the form and position tolerance of the process size relative to the internal spline can also be guaranteed, and the precision of the internal spline in use is improved.
The utility model has the advantages that:
through test verification and practical use, the spline sleeve 2 is processed by the broach, so that the precision is high, the processing efficiency is high, and the cost is low. After the shaft 1 and the spline housing 2 are assembled, the precision requirement can be improved in the subsequent processing.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the present invention.
Claims (4)
1. A high-precision centering coupling structure is characterized by comprising a shaft (1) and a spline sleeve (2) combined and connected with the shaft (1); the inner part of the spline sleeve (2) is processed into an internal spline by a broach; the end part of the shaft (1) is provided with a central hole (1-1); the end part of the spline housing (2) is provided with a round hole (2-1).
2. A high-precision centering shaft coupling structure as claimed in claim 1, wherein the end of the shaft (1) is processed with a diameter consistent with that of the spline housing (2) and is positioned by a round hole; the round hole in the spline housing (2) is coaxial with the internal spline, and the diameter of the round hole is in interference fit with the diameter of the internal spline.
3. A high precision centering shaft coupling structure according to claim 1, characterized in that the end of the shaft (1) is processed into external splines; an inner circle is processed at the end part of the spline housing (2); and the external spline at the end of the shaft (1) and the internal spline of the spline housing (2) are positioned by spline teeth.
4. A high precision centering shaft coupling structure according to claim 1, characterized in that the end of the shaft (1) is processed into external splines; a round through hole is arranged in the spline housing (2); an arc-shaped groove is formed in the middle of the shaft (1); the processing diameter of the end part of the shaft (1) is consistent with that of a round through hole of the spline housing (2), and the end part of the shaft (1) is fixedly inserted into the round through hole formed in the spline housing (2) through matching connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922461908.3U CN211852536U (en) | 2019-12-31 | 2019-12-31 | High-precision centering connecting shaft structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922461908.3U CN211852536U (en) | 2019-12-31 | 2019-12-31 | High-precision centering connecting shaft structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211852536U true CN211852536U (en) | 2020-11-03 |
Family
ID=73208496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922461908.3U Active CN211852536U (en) | 2019-12-31 | 2019-12-31 | High-precision centering connecting shaft structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211852536U (en) |
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2019
- 2019-12-31 CN CN201922461908.3U patent/CN211852536U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 166, Beijing South Road, Tongshan New District, Xuzhou City, Jiangsu Province, 221000 (Yuanzhong Road East, Cuizhuang South Road North) Patentee after: Jiangsu Huaihai new energy Co.,Ltd. Address before: No. 166, Beijing South Road, Xuzhou High-tech Industrial Development Zone, Xuzhou City, Jiangsu Province, 221000 Patentee before: HUAIHAI MECHANICAL AND ELECTRONIC TECHNOLOGY CO.,LTD. |
|
| CP03 | Change of name, title or address | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A high-precision centering coupling structure Effective date of registration: 20230106 Granted publication date: 20201103 Pledgee: Bank of China Limited Xuzhou Yunlong sub branch Pledgor: Jiangsu Huaihai new energy Co.,Ltd. Registration number: Y2023320000012 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |