CN210106413U - Rotation type ball spline - Google Patents
Rotation type ball spline Download PDFInfo
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- CN210106413U CN210106413U CN201920356586.3U CN201920356586U CN210106413U CN 210106413 U CN210106413 U CN 210106413U CN 201920356586 U CN201920356586 U CN 201920356586U CN 210106413 U CN210106413 U CN 210106413U
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Abstract
The utility model discloses a rotation type ball spline, including the smooth cap of screw thread spline, the smooth cap of linear spline, and the screw rod integral key shaft, the smooth cap of screw thread spline includes the thread spline bearing overcoat, the thread spline bearing overcoat includes that the thread spline bushing body and thread spline follow outward, the smooth cap of linear spline includes the linear spline bearing overcoat, the linear spline bearing overcoat includes that the linear spline bushing body and linear spline follow outward, the thread spline bushing body sets up with the linear spline bushing body relatively, and, the external diameter of the thread spline bushing body is unanimous with the external diameter of the linear spline bushing body. The utility model discloses be convenient for outside lock solid mechanism carries out synchronous lock solid to the overcoat of the smooth cap of screw thread spline and the overcoat of the smooth cap of linear spline, need not to carry out the lock solid assembly alone, has reduced the whole degree of difficulty that carries on the assembly, has improved loading efficiency. The relative position degree of the threaded spline sliding cap and the linear spline sliding cap after being fixed is stable, and the running precision is improved. The outer sleeves of the two sliding caps are of a universal structure.
Description
Technical Field
The utility model relates to a rotation type ball spline belongs to the technical field of combination formula ball spline.
Background
The ball spline is a linear motion system that can transmit torque when the spline housing is moved linearly on a precisely ground screw spline shaft using steel balls therein. The spline has a compact structure, can transmit excessive load and power, and has a long service life.
The ball spline generally comprises a shaft rod, a spline outer cylinder and a bearing outer cylinder, wherein the bearing outer cylinder and the spline outer cylinder are in rotatable fit, and the shaft rod and the spline outer cylinder are in linear sliding fit or threaded fit.
In general, ball splines are used independently or in combination, and when they are used in combination, a shaft needs to be designed into a composite track, that is, a screw spline shaft needs to have both a thread slideway and an axial linear slideway.
When the traditional combination type carried ball spline is used, the matching performance of the spline nuts needs to be set independently, especially when the bearing outer cylinders of two spline nuts are locked, the independent locking is complex, when any one bearing outer cylinder has axial deviation, the stroke adjustment is difficult to realize, and the carrying is needed again, so that the carrying is very troublesome.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the not enough of above-mentioned prior art, provide a rotation type ball spline.
In order to achieve the above purpose, the utility model discloses the technical scheme who adopts is:
a rotary ball spline comprises a threaded spline sliding cap, a linear spline sliding cap and a screw spline shaft for slidably loading the threaded spline sliding cap and the linear spline sliding cap,
wherein the screw spline shaft is provided with a thread slide way matched with the thread spline slide cap and a linear slide way matched with the linear spline slide cap,
the thread spline sliding cap comprises a thread spline bearing outer sleeve, the thread spline bearing outer sleeve comprises a thread spline pipe sleeve body and a thread spline outer edge, the linear spline sliding cap comprises a linear spline bearing outer sleeve, the linear spline bearing outer sleeve comprises a linear spline pipe sleeve body and a linear spline outer edge,
the threaded spline pipe sleeve body and the linear spline pipe sleeve body are arranged oppositely, and the outer diameter of the threaded spline pipe sleeve body is consistent with that of the linear spline pipe sleeve body.
Preferably, the linear spline sliding cap comprises a linear spline inner core which is in sliding fit with the screw spline shaft, a linear spline retainer carrying balls is arranged between an outer cylinder of the linear spline inner core and the linear spline bearing outer sleeve, and linear spline oil seal rings are respectively arranged on two sides of an annular cavity formed by the linear spline bearing outer sleeve and the linear spline inner core,
the linear spline inner core is provided with a linear spline inner core driving end axially extending out of the outer edge of the linear spline.
Preferably, the threaded spline sliding cap comprises a threaded spline inner core spirally and slidably engaged with the screw spline shaft, a threaded spline retainer carrying balls is arranged between the outer cylinder of the threaded spline inner core and the threaded spline bearing outer sleeve, and threaded spline oil seal rings are respectively arranged on two sides of an annular cavity formed by the threaded spline bearing outer sleeve and the threaded spline inner core,
the threaded spline inner core is provided with a threaded spline inner core driving end axially extending out of the outer edge of the threaded spline.
Preferably, a plurality of axial locking holes which are circumferentially distributed are respectively arranged on the outer edge of the threaded spline and the outer edge of the linear spline.
Preferably, the axial locking holes on the outer edge of the threaded spline are matched with the axial locking holes on the outer edge of the linear spline in a one-to-one correspondence manner.
Preferably, the threaded spline bearing outer sleeve and the linear spline bearing outer sleeve are the same universal sleeve body.
The beneficial effects of the utility model are mainly embodied in that:
1. the outer sleeve of the threaded spline sliding cap and the outer sleeve of the linear spline sliding cap are conveniently and synchronously locked by the external locking mechanism, independent locking assembly is not needed, the difficulty of integral carrying and assembling is reduced, and the loading efficiency is improved.
2. The relative position degree of the threaded spline sliding cap and the linear spline sliding cap after being fixed is stable, and the running precision is improved.
3. The overcoat of two slip caps is general type structure, possesses the slow-witted effect of preventing slow-witted, has reduced equipment input cost simultaneously.
Drawings
Fig. 1 is a schematic view of the overall structure of a rotary ball spline according to the present invention.
Fig. 2 is a partial cross-sectional view of the threaded spline slip cap of the present invention.
Fig. 3 is a partial cross-sectional view of a linear spline slip cap of the present invention.
Detailed Description
The utility model provides a rotation type ball spline. The technical solution of the present invention will be described in detail below with reference to the accompanying drawings so as to be easier to understand and grasp.
A rotary ball spline, as shown in FIGS. 1 to 3, comprises a threaded spline slip cap 1, a linear spline slip cap 2, and a screw spline shaft 3 for slidably loading the threaded spline slip cap 1 and the linear spline slip cap 2. Wherein, the screw spline shaft 3 is provided with a thread slideway 31 matched with the thread spline sliding cap and a linear slideway 32 matched with the linear spline sliding cap 2.
As shown in fig. 2, the threaded spline sliding cap 1 includes a threaded spline bearing outer sleeve, the threaded spline bearing outer sleeve includes a threaded spline pipe sleeve body 11 and a threaded spline outer edge 12, the linear spline sliding cap 2 includes a linear spline bearing outer sleeve, and the linear spline bearing outer sleeve includes a linear spline pipe sleeve body 21 and a linear spline outer edge 22.
The threaded spline tube sleeve body 11 is arranged opposite to the linear spline tube sleeve body 21, and the outer diameter of the threaded spline tube sleeve body 11 is consistent with that of the linear spline tube sleeve body 21.
Specifically, the screw spline shaft 3 carries the threaded spline sliding cap 1 and the linear spline sliding cap 2 at the same time, and the threaded spline tube sleeve body 11 and the linear spline tube sleeve body 21 are arranged oppositely and have the same outer diameter, so that the threaded spline tube sleeve body 11 and the linear spline tube sleeve body 21 are integrally fixed, the threaded spline tube sleeve body and the linear spline tube sleeve body can be directly locked by a tubular locking sleeve without being fixed independently, and the relative positions of the threaded spline sliding cap 1 and the linear spline sliding cap 2 are relatively stable.
As shown in fig. 3, the linear spline sliding cap 2 is described in detail, and includes a linear spline inner core 23 slidably fitted on the screw spline shaft 3, a linear spline retainer 24 for carrying the balls 5 is provided between an outer cylinder of the linear spline inner core 23 and a linear spline bearing outer sleeve, linear spline oil seal rings 25 are respectively provided on both sides of an annular cavity formed by the linear spline bearing outer sleeve and the linear spline inner core 23, and the linear spline inner core 23 is provided with a linear spline inner core driving end 26 axially extending out of the linear spline outer rim 22.
More finely, the driving end 26 of the linear spline inner core can be carried with a ferrule body, so that the connection with an external driving source is facilitated.
As shown in fig. 2, the threaded spline sliding cap 1 is described in detail, and includes a threaded spline inner core 13 spirally and slidably engaged with the screw spline shaft 3, a threaded spline retainer 14 for carrying the balls 5 is provided between an outer cylinder of the threaded spline inner core 13 and the threaded spline bearing outer sleeve, threaded spline oil seal rings 15 are respectively provided on two sides of an annular cavity formed by the threaded spline bearing outer sleeve and the threaded spline inner core 13, and the threaded spline inner core 13 is provided with a threaded spline inner core 16 driving end axially extending out of the threaded spline outer edge 12.
More thinly, the driving end 16 of the threaded spline inner core can be carried with the ferrule body, so that the connection with an external driving source is facilitated.
The implementation process and principle of the scheme are explained in detail:
the threaded spline tube sleeve body 11 and the linear spline tube sleeve body 21 are integrally sleeved and locked by an external tubular locking sleeve, and the threaded spline inner core driving end 16 and the linear spline inner core driving end 26 are respectively connected with a rotary driving source.
Axial displacement drive of the screw spline shaft 3 can be achieved by rotational drive of the threaded spline inner core drive end 16, while axial rotational drive of the screw spline shaft 3 can be achieved by rotational drive of the linear spline inner core drive end 26. The axial displacement control and circumferential rotation control of the carrier carried on the screw spline shaft 3 can be realized.
In one embodiment, the threaded spline outer rim 12 and the linear spline outer rim 22 are respectively provided with a plurality of circumferentially arranged axial locking holes 4. The axial locking hole 4 can be axially locked with an external tubular locking sleeve, and the locking is firm.
In one embodiment, the axial locking holes 4 of the threaded splined outer rim 12 match the axial locking holes 4 of the linear splined outer rim 22 in a one-to-one correspondence.
By adopting the design, the locking rod can be used for linkage locking of the threaded spline outer edge 12 and the linear spline outer edge 22. When the six-hole embodiment is shown in fig. 1, six interlocking lock rods can be adopted for cross-linking and locking.
Finally, the threaded spline bearing outer sleeve and the linear spline bearing outer sleeve are the same general sleeve body, and the outer peripheral surface of the outer cylinder of the linear spline inner core 23 is the same as that of the outer cylinder of the threaded spline inner core 13. The production manufacturing and processing are convenient, the assembling fool-proofing is realized, and the situation that the sleeve body is wrongly assembled in the assembling mode of the threaded spline sliding cap 1 and the linear spline sliding cap 2 is prevented. In addition, only one production line is needed in production and processing, the manufacturing of the threaded spline bearing outer sleeve and the linear spline bearing outer sleeve can be met, and the equipment cost is reduced.
Can discover through the above description, the utility model relates to a rotation type ball spline, the external lock solid mechanism of being convenient for carries out synchronous lock solid to the overcoat of the smooth cap of screw thread spline and the overcoat of the smooth cap of linear spline, need not to carry out the lock solid assembly alone, has reduced the whole degree of difficulty that carries on the assembly, has improved loading efficiency. The relative position degree of the threaded spline sliding cap and the linear spline sliding cap after being fixed is stable, and the running precision is improved. The overcoat of two slip caps is general type structure, possesses the slow-witted effect of preventing slow-witted, has reduced equipment input cost simultaneously.
The above technical solutions of the present invention have been fully described, and it should be noted that the present invention is not limited by the above description, and all technical solutions formed by equivalent transformation or equivalent transformation adopted by the spirit of the present invention in the aspects of structure, method or function by those of ordinary skill in the art all fall within the protection scope of the present invention.
Claims (6)
1. A rotary ball spline, comprising:
comprises a thread spline sliding cap, a linear spline sliding cap and a screw spline shaft for slidably loading the thread spline sliding cap and the linear spline sliding cap,
wherein the screw spline shaft is provided with a thread slide way matched with the thread spline slide cap and a linear slide way matched with the linear spline slide cap,
the thread spline sliding cap comprises a thread spline bearing outer sleeve, the thread spline bearing outer sleeve comprises a thread spline pipe sleeve body and a thread spline outer edge, the linear spline sliding cap comprises a linear spline bearing outer sleeve, the linear spline bearing outer sleeve comprises a linear spline pipe sleeve body and a linear spline outer edge,
the threaded spline pipe sleeve body and the linear spline pipe sleeve body are arranged oppositely, and the outer diameter of the threaded spline pipe sleeve body is consistent with that of the linear spline pipe sleeve body.
2. The rotary ball spline of claim 1, wherein:
the linear spline sliding cap comprises a linear spline inner core which is matched on the screw spline shaft in a sliding way, a linear spline retainer for carrying balls is arranged between an outer cylinder of the linear spline inner core and the linear spline bearing outer sleeve, linear spline oil sealing rings are respectively arranged on two sides of an annular cavity formed by the linear spline bearing outer sleeve and the linear spline inner core,
the linear spline inner core is provided with a linear spline inner core driving end axially extending out of the outer edge of the linear spline.
3. The rotary ball spline of claim 1, wherein:
the thread spline sliding cap comprises a thread spline inner core which is spirally and slidably matched and connected on the screw rod spline shaft, a thread spline retainer for carrying balls is arranged between an outer cylinder of the thread spline inner core and the thread spline bearing outer sleeve, thread spline oil seal rings are respectively arranged on two sides of an annular cavity formed by the thread spline bearing outer sleeve and the thread spline inner core,
the threaded spline inner core is provided with a threaded spline inner core driving end axially extending out of the outer edge of the threaded spline.
4. A rotary ball spline according to any one of claims 1 to 3, wherein:
and a plurality of axial locking holes which are circumferentially distributed are respectively arranged on the outer edge of the threaded spline and the outer edge of the linear spline.
5. The rotary ball spline of claim 4, wherein:
and the axial locking holes on the outer edge of the threaded spline are matched with the axial locking holes on the outer edge of the linear spline in a one-to-one correspondence manner.
6. The rotary ball spline of claim 1, wherein:
the thread spline bearing outer sleeve and the linear spline bearing outer sleeve are consistent universal sleeve bodies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920356586.3U CN210106413U (en) | 2019-03-20 | 2019-03-20 | Rotation type ball spline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920356586.3U CN210106413U (en) | 2019-03-20 | 2019-03-20 | Rotation type ball spline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210106413U true CN210106413U (en) | 2020-02-21 |
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ID=69532871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920356586.3U Active CN210106413U (en) | 2019-03-20 | 2019-03-20 | Rotation type ball spline |
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| Country | Link |
|---|---|
| CN (1) | CN210106413U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102021121644A1 (en) | 2021-08-20 | 2023-02-23 | Dietz Gmbh | Swivel roller bearing sleeve or chassis or rollator with such a bearing sleeve |
-
2019
- 2019-03-20 CN CN201920356586.3U patent/CN210106413U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102021121644A1 (en) | 2021-08-20 | 2023-02-23 | Dietz Gmbh | Swivel roller bearing sleeve or chassis or rollator with such a bearing sleeve |
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