CN203717818U - Ball spline housing - Google Patents
Ball spline housing Download PDFInfo
- Publication number
- CN203717818U CN203717818U CN201320892018.8U CN201320892018U CN203717818U CN 203717818 U CN203717818 U CN 203717818U CN 201320892018 U CN201320892018 U CN 201320892018U CN 203717818 U CN203717818 U CN 203717818U
- Authority
- CN
- China
- Prior art keywords
- way
- round platform
- spacing
- cylindrical cavity
- spline
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Bearings For Parts Moving Linearly (AREA)
Abstract
The utility model discloses a ball spline housing. The ball spline housing comprises a spline nut and a retainer housing in the spline nut. At least two annular rails are distributed on the retainer housing in the peripheral direction. At least two ball moving portions corresponding to the annular rails in a one-to-one mode are formed in the inner wall of the spline nut, and a plurality of rolling bodies which are sequentially arranged along the extension tracks of the annular rails and can roll along the extension tracks are arranged between the annular rails and the corresponding ball moving portions in a clamping mode. At least two ball filling holes corresponding to the ball moving portions in a one-to-one mode are formed in the outer wall of the spline nut and penetrate through the corresponding ball moving portions in the radial direction. End caps are installed in the ball filling holes. According to the ball spline housing, the annular rails are integrally formed on the retainer housing so that the phenomenon that rolling of the rolling bodies is not smooth can be reduced; the ball filling holes are formed in the spline nut, in the assembly process, the rolling bodies can fill the ball filling holes, and therefore filling of the rolling bodies can be achieved easily and conveniently.
Description
Technical field
The utility model relates to a kind of ball spline cover.
Background technique
In mechanical field, ball spline cover is combined to form ball spline pair with splined shaft, is usually used in automation equipment and has in the straight line motion of high sensitivity high reliability the system of transmitting torque with other.Existing ball spline cover is generally comprised of spline mother, ball, ball-returning device, retainer and dust cover etc., but in this ball spline cover, the annular of ball is led the way and plugged into and formed by spline mother and ball-returning device, easily occurs the not smooth situation of ball rolling.In order to improve this situation, there is on the market a kind of improvement ball spline cover, it can reduce the smooth phenomenon of ball rolling, but in assembly process, this ball spline cover is not easy to fill ball, easily occurs filling out the problem of pearl difficulty.
Model utility content
In order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of ball spline cover, and it is by putting at retainer ring track is one-body molded, can reduce the rolling element smooth phenomenon of rolling; And, be also convenient to fill rolling element.
For addressing the above problem, the technological scheme that the utility model adopts is as follows:
A ball spline cover, comprises the retainer cover that spline is female, be positioned at spline mother; Described retainer puts circumferential row and shows at least two ring tracks, on described spline mother's inwall, be formed with and each ring track at least two ballpoint positions one to one, between described ring track and corresponding ballpoint position, clamp and along this ring track, extend that track is arranged in order and can extend a plurality of rolling elements that track rolls along this; On described spline mother's outer wall, be formed with each ballpoint position one to one at least two fill out the hole of bead, this is filled out the hole of bead and radially runs through corresponding ballpoint position, described in fill out plug be installed in the hole of bead.
Described ring track comprises that load leads the way, and the extension track that described load is led the way is parallel with spline mother's axis; This load is formed with the opening that runs through retainer cover inwall on leading the way.
Described ring track also comprises that successively the First Transition connecting leads the way, and first time pearl lead the way, mainly lead the way, second time pearl led the way, the second transition is led the way; Described load is led the way and is led the way and between the second transition leads the way at First Transition; Described ballpoint position comprise lead the way with First Transition the spacing face of the first round platform relative, lead the way the spacing face of the first cylinder relative with first time pearl, with the main relative main raceway of leading the way, lead the way the spacing face of the second cylinder relative with second time pearl, lead the way the spacing face of the second round platform relative with the second transition, lead the way load raceway relative with load.
The spacing face of described the first round platform is connected with the spacing face of the first cylinder, and the spacing face of the second round platform is connected with the spacing face of the second cylinder; Main raceway is between the spacing face of the first cylinder and the spacing face of the second cylinder, and load raceway is between the spacing face of the first round platform and the spacing face of the second round platform.
From the one end of leading the way near load to the other end of leading the way near first time pearl, described First Transition is led the way and is increased gradually with the distance of the inwall of retainer cover; From the one end of leading the way near load to the other end of leading the way near second time pearl, described the second transition is led the way and is increased gradually with the distance of the inwall of retainer cover.
In spline mother, be formed with for retainer and overlap interspersed installation cavity, described installation cavity comprises along the female axially extended main cylindrical cavity of spline; The two ends of described main cylindrical cavity are all connected with spacing cylindrical cavity by round platform chamber; Described main cylindrical cavity, round platform chamber, the coaxial setting of spacing cylindrical cavity; The small end in this two round platforms chamber is connected with main cylindrical cavity, and the internal diameter of round platform chamber small end equates with the internal diameter of main cylindrical cavity, and the internal diameter of the large end in round platform chamber equates with the internal diameter of spacing cylindrical cavity; The spacing face of described the first cylinder, the second cylinder confined planes portion are formed on respectively on the cylndrical surface of this two spacing cylindrical cavity accordingly, and the spacing face of the first round platform, the second round platform confined planes portion are formed on respectively in the round table surface in this two round platforms chamber accordingly.
Load raceway is molded on the inwall of main cylindrical cavity, and the two ends of this load raceway all extend outwardly, and extends in the place, inside edge in corresponding round platform chamber or the round table surface in corresponding round platform chamber; Main raceway is molded on the inwall of main cylindrical cavity, and the two ends of this main raceway all extend outwardly, and extends on the place, inside edge of corresponding spacing cylindrical cavity or the cylndrical surface of corresponding spacing cylindrical cavity.
Main extension track of leading the way is parallel with spline mother's axis.
The described hole of bead of filling out is led the way relative with master.
Described rolling element is steel ball, or roller.
Compared to existing technology, the beneficial effects of the utility model are:
The utility model is by putting at retainer ring track is one-body molded, can reduce the smooth phenomenon of rolling element rolling, and, also by adopt the design of filling out the hole of bead on spline mother, when assembling, can utilize and fill out the hole of bead and fill rolling element, thereby make to fill rolling element, can realize simply and easily; And the utility model only utilizes the mating reaction of spline mother and retainer, just can be for rolling element circulating rolling, structure is comparatively simple, and reliable working performance; And, of the present utility model simple in structure, to manufacture and assemble easily, cost of production is low, is conducive to promote.
Accompanying drawing explanation
Fig. 1 is cut-away view of the present utility model;
Fig. 2 is the structural representation of the spline mother in the utility model;
Fig. 3 be spline mother in the utility model partly cut open stereogram;
Fig. 4 is the structural representation of the retainer cover in the utility model;
Wherein, 1, retainer cover; 11, load is led the way; 12, main leading the way; 13, first time pearl led the way; 14, second time pearl led the way; 15, First Transition is led the way; 16, the second transition is led the way; 2, spline is female; 21, fill out the hole of bead; 22, the spacing face of the first round platform; 23, the spacing face of the first cylinder; 25, main raceway; 26, load raceway; 27, the spacing face of the second round platform; 28, the spacing face of the second cylinder; 3, rolling element; 4, block piece; 5, plug.
Embodiment
Below, by reference to the accompanying drawings and embodiment, the utility model is described further, so that clearer, understand the utility model technical thought required for protection.
As shown in Figure 1,2,3, 4, be a kind of ball spline cover of the utility model, comprise spline mother 2, be positioned at spline mother 2 retainer cover 1; On described retainer cover 1, circumferential row is shown at least two ring tracks, on described spline mother's 2 inwall, be formed with and each ring track at least two ballpoint positions one to one, between described ring track and corresponding ballpoint position, clamp and along this ring track, extend that track is arranged in order and can extend a plurality of rolling elements 3 that track rolls along this; On described spline mother's 2 outer wall, be formed with each ballpoint position one to one at least two fill out the hole of bead 21, this is filled out the hole of bead 21 and radially runs through corresponding ballpoint position; Described filling out is provided with plug 5 in the hole of bead 21.
Concrete, described ring track comprises that load leads the way 11, and lead the way 11 extension track of described load is parallel with spline mother 2 axis; This load is led the way and is formed with and runs through the opening that retainer overlaps 1 inwall on 11.Wherein, this opening can extend to the other end from lead the way one end of 11 of load, also can only be arranged on load lead the way 11 middle part or other positions.Preferably, described ring track also comprises successively and to lead the way the First Transition connecting 15, the first times pearls lead the way 13, main 12, the second times pearls of leading the way are led the way, and the 14, second transition leads the way 16; Described load is led the way and 11 in First Transition 15 and second transition of leading the way, is led the way between 16; Described ballpoint position comprise with First Transition lead the way 15 relative first round platform spacing facial 22, with first time pearl lead the way 13 relative first cylinder spacing facial 23, with the main 12 relative main raceways 25 of leading the way, with second time pearl lead the way 14 relative second cylinder spacing facial 28, with the second transition lead the way 16 relative second round platform spacing facial 27, with the load 11 relative load raceways 26 of leading the way.
Described first time pearl leads the way 13, main 12, the second times pearls of leading the way are led the way 14 grooves that are on the outer wall that is formed on retainer cover 1, and described main raceway 25, load raceway 26 are the groove on the inwall that is formed on spline mother 2.By adopting said structure, can be convenient to processing, and guarantee its performance.
And preferred, main 12 the extension track of leading the way is parallel with spline mother 2 axis.Wherein, described in fill out on any section that the hole of bead 21 can be applied in corresponding ballpoint position, as long as can meet, fill out pearl.Preferably, described in fill out the hole of bead 21 and lead the way 12 relatively with main, and because main 12 the path comparison of leading the way is straight, long, when rolling element 3, precipitate to main and while leading the way on 12, can have enough distances for rolling element 3 bufferings, thereby effectively reduce the shock to ring track.Described fill out the hole of bead 21 and can, according to actual demand, be set to the various shapes such as circle, ellipse.
Described the first round platform spacing facial 22 is connected with the first cylinder spacing facial 23, and the second round platform spacing facial 27 is connected with the second cylinder spacing facial 28; Main raceway 25 is between the first cylinder spacing facial 23 and the second cylinder spacing facial 28, and load raceway 26 is between the first round platform spacing facial 22 and the second round platform spacing facial 27.
Preferably, from 11 the one end of leading the way near load to lead the way 13 the other end near first time pearl, described First Transition is led the way and 15 is increased gradually with the distance of the inwall of retainer cover 1 so that rolling element 3 from load lead the way 11 to first times pearls lead the way 13(or from first time pearl, lead the way and 13 lead the way 11 to load) can smooth and easyly roll; From 11 the one end of leading the way near load to lead the way 14 the other end near second time pearl, described the second transition lead the way 16 increase gradually with the distance of the inwall of retainer cover 1 so that rolling element 3 from load lead the way 11 to second times pearls lead the way 14(or from second time pearl, lead the way and 14 lead the way 11 to load) can smooth and easyly roll.And now, the first round platform spacing facial 22 matches with it with spacing facial 27 the structure of the second round platform.
Preferably, be formed with for retainer and overlap 1 interspersed installation cavity in spline mother 2, described installation cavity comprises along the female 2 axially extended main cylindrical cavities of spline; The two ends of described main cylindrical cavity are all connected with spacing cylindrical cavity by round platform chamber; Described main cylindrical cavity, round platform chamber, the coaxial setting of spacing cylindrical cavity; The small end in this two round platforms chamber is connected with main cylindrical cavity, and the internal diameter of round platform chamber small end equates with the internal diameter of main cylindrical cavity, and the internal diameter of the large end in round platform chamber equates with the internal diameter of spacing cylindrical cavity; Spacing facial the 23, second cylinder spacing facial 28 of described the first cylinder is formed on respectively on the cylndrical surface of this two spacing cylindrical cavity accordingly, and spacing facial the 22, second round platform spacing facial 27 of the first round platform is formed on respectively in the round table surface in this two round platforms chamber accordingly.By adopting said structure, no matter the quantity of ballpoint position is set to many or few, as long as adopt two round platform chambeies and two spacing cylindrical cavities in installation cavity, just can meet the demand of spacing facial 27 the quantity of spacing facial the 23, second cylinder spacing facial the 22, second round platform of spacing facial the 28, first round platform of the first cylinder, can reduce process time, improve work efficiency.
Load raceway 26 is molded on the inwall of main cylindrical cavity, and the two ends of this load raceway 26 all extend outwardly, and extends in the place, inside edge in corresponding round platform chamber or the round table surface in corresponding round platform chamber; Main raceway 25 is molded on the inwall of main cylindrical cavity, and the two ends of this main raceway 25 all extend outwardly, and extends on the place, inside edge of corresponding spacing cylindrical cavity or the cylndrical surface of corresponding spacing cylindrical cavity.
Described retainer cover 1 is arranged in overcoat by fixed block; Described fixed block comprises two block pieces 4 that are arranged in female 2 two ends of spline; The two ends of retainer cover 1 are resisted against respectively on this two block piece 4, to utilize these two block pieces, 4 restriction retainer covers 1 to move axially, thereby retainer cover 1 are arranged in spline mother 2.Concrete, described block piece 4 includes back-up ring, is positioned at the dust cover in back-up ring outside.Preferably, described block piece 4 is arranged on spline mother 2 draw-in groove in the mode clamping.
Described rolling element 3 is steel ball, or roller.
Assembly process of the present utility model is as follows:
(a) first spline mother 2, wherein on the draw-in groove of one end, block piece 4 is installed;
(b) then retainer cover 1 is packed in spline mother 2;
(c) in the draw-in groove of female 2 the other ends of spline, install block piece 4 again;
(d) by filling out the hole of bead 21, in the ring track of retainer cover 1, fill rolling element 3;
(e) finally load onto plug 5, the hole of bead 21 is filled out in sealing.
Working procedure of the present utility model is as follows: in use, when rolling element 3 is rolled into load, lead the way 11 time, this rolling element 3 contacts with load raceway 26; When rolling element 3 is rolled into First Transition, lead the way 15 time, rolling element 3 contacts with the first round platform spacing facial 22; When rolling element 3 is rolled into first time pearl, lead the way 13 time, rolling element 3 contacts with the first cylinder spacing facial 23; When rolling element 3 is rolled into main leading the way 12 time, rolling element 3 contacts with main raceway 25; When rolling element 3 is rolled into second time pearl, lead the way 14 time, rolling element 3 contacts with the second cylinder spacing facial 28; When being rolled into the second transition, rolling element 3 leads the way 16 time, rolling element 3 contacts with the second round platform spacing facial 27, therefore, the utility model is by rationally arranging the structure of ballpoint position, can utilize ballpoint position to limit rolling element 3, avoid rolling element 3 to depart from ring track, improve the reliability of its work; And under the common leading role and effect of contraction of ring track and ballpoint position, the extension track that this rolling element 3 can be led the way along annular is done circulation pure rolling, roll flexibly, and friction is less.
The utility model is by one-body molded on retainer cover 1 by ring track, can reduce rolling element 3 rolling resistance, reduce the smooth phenomenon of rolling element 3 rollings, and, also by adopt the design of filling out the hole of bead 21 on spline mother 2, in when assembling, can utilize and fill out the hole of bead 21 and fill rolling element 3, thereby make to fill rolling element 3, can realize simply and easily; And the utility model only utilizes the mating reaction of spline female 2 and retainer, just can be for rolling element 3 circulating rollings, structure is comparatively simple, and reliable working performance; Of the present utility model simple in structure, to manufacture and assemble easily, cost of production is low.
Above-mentioned mode of execution is only preferred implementation of the present utility model; can not limit with this scope of the utility model protection, the variation of any unsubstantiality that those skilled in the art does on basis of the present utility model and replacement all belong to the utility model scope required for protection.
Claims (10)
1. a ball spline cover, is characterized in that: comprise the retainer cover that spline is female, be positioned at spline mother; Described retainer puts circumferential row and shows at least two ring tracks, on described spline mother's inwall, be formed with and each ring track at least two ballpoint positions one to one, between described ring track and corresponding ballpoint position, clamp and along this ring track, extend that track is arranged in order and can extend a plurality of rolling elements that track rolls along this; On described spline mother's outer wall, be formed with each ballpoint position one to one at least two fill out the hole of bead, this is filled out the hole of bead and radially runs through corresponding ballpoint position, described in fill out plug be installed in the hole of bead.
2. ball spline cover as claimed in claim 1, is characterized in that: described ring track comprises that load leads the way, and the extension track that described load is led the way is parallel with spline mother's axis; This load is formed with the opening that runs through retainer cover inwall on leading the way.
3. ball spline cover as claimed in claim 2, is characterized in that: described ring track also comprises that the First Transition connecting successively leads the way, and first time pearl lead the way, mainly lead the way, second time pearl led the way, the second transition is led the way; Described load is led the way and is led the way and between the second transition leads the way at First Transition; Described ballpoint position comprise lead the way with First Transition the spacing face of the first round platform relative, lead the way the spacing face of the first cylinder relative with first time pearl, with the main relative main raceway of leading the way, lead the way the spacing face of the second cylinder relative with second time pearl, lead the way the spacing face of the second round platform relative with the second transition, lead the way load raceway relative with load.
4. ball spline cover as claimed in claim 3, is characterized in that: the spacing face of described the first round platform is connected with the spacing face of the first cylinder, and the spacing face of the second round platform is connected with the spacing face of the second cylinder; Main raceway is between the spacing face of the first cylinder and the spacing face of the second cylinder, and load raceway is between the spacing face of the first round platform and the spacing face of the second round platform.
5. ball spline cover as claimed in claim 3, is characterized in that: from the one end of leading the way near load to the other end of leading the way near first time pearl, described First Transition is led the way and increased gradually with the distance of the inwall of retainer cover; From the one end of leading the way near load to the other end of leading the way near second time pearl, described the second transition is led the way and is increased gradually with the distance of the inwall of retainer cover.
6. ball spline cover as claimed in claim 3, is characterized in that: in spline mother, be formed with for retainer and overlap interspersed installation cavity, described installation cavity comprises along the female axially extended main cylindrical cavity of spline; The two ends of described main cylindrical cavity are all connected with spacing cylindrical cavity by round platform chamber; Described main cylindrical cavity, round platform chamber, the coaxial setting of spacing cylindrical cavity; The small end in this two round platforms chamber is connected with main cylindrical cavity, and the internal diameter of round platform chamber small end equates with the internal diameter of main cylindrical cavity, and the internal diameter of the large end in round platform chamber equates with the internal diameter of spacing cylindrical cavity; The spacing face of described the first cylinder, the second cylinder confined planes portion are formed on respectively on the cylndrical surface of this two spacing cylindrical cavity accordingly, and the spacing face of the first round platform, the second round platform confined planes portion are formed on respectively in the round table surface in this two round platforms chamber accordingly.
7. ball spline cover as claimed in claim 6, it is characterized in that: load raceway is molded on the inwall of main cylindrical cavity, and the two ends of this load raceway all extend outwardly, and extend in the round table surface in the place, inside edge in corresponding round platform chamber or the round platform chamber of correspondence; Main raceway is molded on the inwall of main cylindrical cavity, and the two ends of this main raceway all extend outwardly, and extends on the place, inside edge of corresponding spacing cylindrical cavity or the cylndrical surface of corresponding spacing cylindrical cavity.
8. ball spline cover as claimed in claim 3, is characterized in that: main extension track of leading the way is parallel with spline mother's axis.
9. ball spline cover as claimed in claim 3, is characterized in that: described in fill out the hole of bead with main lead the way relative.
10. ball spline cover as claimed in claim 1, is characterized in that: described rolling element is steel ball, or roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320892018.8U CN203717818U (en) | 2013-12-31 | 2013-12-31 | Ball spline housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320892018.8U CN203717818U (en) | 2013-12-31 | 2013-12-31 | Ball spline housing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203717818U true CN203717818U (en) | 2014-07-16 |
Family
ID=51156971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320892018.8U Expired - Fee Related CN203717818U (en) | 2013-12-31 | 2013-12-31 | Ball spline housing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203717818U (en) |
-
2013
- 2013-12-31 CN CN201320892018.8U patent/CN203717818U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201810666U (en) | Bidirectional angular contact thrust ball bearing assembly | |
| CN203717818U (en) | Ball spline housing | |
| CN103742532A (en) | Ball spline pair | |
| CN203717693U (en) | Ball spline housing | |
| CN201659147U (en) | Isolation ring for realizing falling prevention effect between bearings of roller system of rolling mill rollers | |
| CN105402255B (en) | Double-layer seal matches bearing | |
| CN203756736U (en) | Self-aligning roller gear bearing | |
| CN202165407U (en) | DGBB with rolling cross grain grooves | |
| CN203362814U (en) | Double-row angular contact ball bearing | |
| CN206458719U (en) | A kind of heavy screw bearing | |
| CN203702878U (en) | Tapered roller gear bearing | |
| CN203666259U (en) | Hub unit mandrel | |
| CN203641269U (en) | Novel bidirectional thrust angular contact ball bearing | |
| CN202484075U (en) | Rolling bearing without holding device | |
| CN203395010U (en) | Spherical roller bearing with open elastic snap rings | |
| CN202579279U (en) | Device for combining horizontal type multi-stage pump rolling bearing | |
| CN201925343U (en) | Linear bearing | |
| CN203637444U (en) | Third-generation tapered roller automobile hub unit with inner ring integrated on flange plate | |
| CN205371055U (en) | Decarbonization pump pump shaft axle sleeve structure | |
| CN203770399U (en) | Angular contact bearing outer ring structure of electric spindle | |
| CN202628798U (en) | Needle bearing capable of improving assembling efficiency | |
| CN204533183U (en) | A kind of double-side opening groove bearing | |
| CN204477078U (en) | A kind of convex surface taper roller bearing | |
| CN203906561U (en) | Linear bearing | |
| CN204312454U (en) | The fixed anti-loosening device of piston of easy care steel ball easy to process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140716 Termination date: 20191231 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |