CN102588542B - The ball screw of tool reflux assembly - Google Patents
The ball screw of tool reflux assembly Download PDFInfo
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- CN102588542B CN102588542B CN201110001007.1A CN201110001007A CN102588542B CN 102588542 B CN102588542 B CN 102588542B CN 201110001007 A CN201110001007 A CN 201110001007A CN 102588542 B CN102588542 B CN 102588542B
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- face
- return block
- parting plane
- reflux assembly
- ball screw
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Abstract
The invention discloses a kind of ball screw of tool reflux assembly, reflux assembly is mainly divided into first return block and second return block by it, assemble time can sectional in ball screw, avoid thread to interfere, no longer by the restriction of teething design, be applicable to the screw rod of not teething, using scope obviously expands.The bottom surface of the second return block of reflux assembly of the present invention and the second parting plane form the angle of 18 ° ~ 25 °, and the maximum height of the first return block is less than the maximum height of the second return block, make the present invention be applicable to the less nut of external diameter, meet the nut of new, old form.
Description
Technical field
The present invention relates to ball screw, refer to a kind of ball screw of tool reflux assembly especially.
Background technique
Consult Fig. 1, for the schematic diagram of the U.S. US4357838 patent No., a kind of ball screw of tool reflux assembly is mainly provided, its reflux assembly 11 installs from the end face axial of nut 12, reflux assembly 11 has a nail 111, described nail 111 is convex and to be located at the external spiral conduit 131 of screw rod 13 inner, to be connected screw rod 13 external spiral conduit 131 and reflux assembly 11, each ball 14 is guided by reflux assembly 11 and enters the return port (not shown on figure) of nut 12, ball 14 between screw rod 13 and nut 12 can constantly be circulated and eliminate ball 14 reflux impact force.But, because the external spiral conduit 131 of screw rod 13 and the nail 111 of reflux assembly 11 are a kind of male-female engagement, make wherein one end of the external spiral conduit 131 of screw rod 13 must be open (general industry is called teething design), therefore the shoulder of screw rod 13 also must adopt teething design, thus reduces the working life of ball screw.
Consult Fig. 2, for the schematic diagram of U.S. US2008/0110284A1 publication number, a kind of ball screw of tool reflux assembly is mainly provided, although its reflux assembly adopts the design of segmentation, namely be made up of an interior return block 16 and an exteenal reflux block 17, solved the restriction that screw rod 18 in the past itself must be teethed.But, because the end face 171 of exteenal reflux block 17 is all plane with bottom surface 172 and is parallel to each other, formed without angle, therefore this structural design must coordinate the nut 19 that external diameter is larger, inapplicable for the nut of special specification, such as the nut external diameter of European industrial standard (DIN) institute specification, therefore lacks applicability.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of ball screw of tool reflux assembly, can be applicable to the screw rod of the less nut of external diameter and not teething structure simultaneously.
For solving the problems of the technologies described above, the ball screw of a kind of tool reflux assembly provided by the invention, comprises: a screw rod, has an axis and and is arranged at outside external spiral conduit around described axis spiral, a nut, be sheathed on outside screw rod along described axial direction, and comprise one and be arranged at inner internal spiral conduit around axis spiral, described internal spiral conduit and external spiral conduit form the load path of an accommodating multiple ball, a return port communicated with internal spiral conduit and a containing groove offered along this axial direction by nut end face, and described containing groove comprises groove bottom and the trough wall surface being refluxed hole and wearing of a corresponding external spiral conduit, a reflux assembly, be located in containing groove along described axial direction, and be divided into first return block and second return block along this axial direction, described first return block comprises an end face, first parting plane being in reverse to end face, described second return block comprises one and is plane and the second parting plane being posted by the first parting plane, one is plane and is posted by the bottom surface of described groove bottom, and this bottom surface and the second parting plane shape are in an angle, described first parting plane is HC1 to the ultimate range of end face, second parting plane is HC2 to the ultimate range of bottom surface, and meet relation HC2 > HC1.
Reflux assembly design is divided into first return block and second return block by the present invention, assemble time can sectional in ball screw, make to have and easily cause the first return block of the nail of interference to be first placed between screw rod and nut, again the second return block is axially assembled in nut subsequently, efficiently solves the restriction that screw rod itself is in the past necessary for teething design.
In addition, the present invention also adopts the angled design of reflux assembly tool, and restriction HC1 and HC2 meets HC2 > HC1, makes the present invention can be useful in the less nut of external diameter, to meet the nut of new, old form.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and embodiment, the present invention is further detailed explanation:
The schematic diagram of the Tu1Shi U.S. US4357838 patent No.;
The schematic diagram of Tu2Shi U.S. US2008/0110284A1 publication number;
Fig. 3 is three-dimensional exploded view of the present invention;
Fig. 4 is the stereogram of nut of the present invention;
Fig. 5 is the three-dimensional combination figure of reflux assembly of the present invention;
Fig. 6 is the three-dimensional exploded view of reflux assembly of the present invention;
Fig. 7 is the combination of side view of reflux assembly of the present invention;
Fig. 8 is that the first return block of the embodiment of the present invention axially inserts schematic diagram;
Fig. 9 is that the first return block radial direction of the embodiment of the present invention inserts schematic diagram;
Figure 10 is that the second return block of the embodiment of the present invention axially inserts schematic diagram.
Wherein description of reference numerals is as follows:
Reflux assembly 11 nail 111
Nut 12 screw rod 13
External spiral conduit 131 ball 14
Interior return block 16 exteenal reflux block 17
End face 171 bottom surface 172
Screw rod 18 nut 19
Screw rod 20 axis 21
External spiral conduit 22
Nut 30 internal spiral conduit 31
Return port 32 containing groove 33
Groove bottom 331 trough wall surface 332
First return block 40 end face 41
First parting plane 42 first breasting face 43
First end face 44 positioning part 45
First backflow road 46 nail 47
First surface 48
Second return block 50 second parting plane 51
Breasting face 53, bottom surface 52 second
Second end face 54 locates recessed 55
Second backflow road 56 second curved surface 57
Lug 58
Locked groove 581 screw 59
Ball 91 return flow line 92
Angle A
Embodiment
Consult shown in Fig. 3 to 7, the ball screw of a kind of tool reflux assembly that the embodiment of the present invention provides, primarily of a screw rod 20, nut 30 and a reflux assembly composition.
Screw rod 20 has an axis 21 and and is arranged at outside external spiral conduit 22 around this axis 21 spiral, the two ends of external spiral conduit 22 are closed shape (design of not teething) or open shape (teething design), and the present embodiment is for closed shape.
Nut 30 is sheathed on outside screw rod 20 along axis 21 direction, and comprise one and be arranged at inner internal spiral conduit 31 around axis 21 spiral, and internal spiral conduit 31 and external spiral conduit 22 formed an accommodating multiple ball 91 load path, one to be offered along axis 21 direction by nut 30 end face with the return port 32 that internal spiral conduit 31 communicates and one and the containing groove 33 of corresponding external spiral conduit 22 and return port 32, containing groove 33 comprises groove bottom 331 and the trough wall surface 332 being refluxed hole 32 and wearing of a corresponding external spiral conduit 22.
Reflux assembly is located in the containing groove 33 of nut 30 along axis 21 direction, and first return block 40 and second return block 50 is divided into along axis 21 direction, wherein be divided into along axis 21 direction and refer to that reflux assembly is posted by containing groove 33 trough wall surface 332 for breasting face, and the breasting face of being in reverse to is end face, split to end face by breasting face, be divided into first and second return block 40,50.
First return block 40 comprises an end face 41, and is in reverse to the first parting plane 42 of end face 41 and connects the first surface 48 of end face 41 and the first parting plane 42, second return block 50 comprises one in plane and the second parting plane 51, being posted by the first parting plane 42 is posted by the bottom surface 52 of groove bottom 331 in plane, and bottom surface 52 and the second parting plane 51 shape are in an angle, this included angle A is between 18 ° ~ 25 °.The ultimate range of the first parting plane 42 to end face 41 is HC1, and the ultimate range of the second parting plane 51 to bottom surface 52 is HC2, and the two meets relation HC2 > HC1.
In addition, the bottom surface 52 of the second return block 50 reclines the groove bottom 331 of containing groove 33, and there is between the second parting plane 51 and bottom surface 52 the second breasting face 53 that is posted by containing groove 33 trough wall surface 332, have one between the first parting plane 42 of the first return block 40 and end face 41 and be posted by the first breasting face 43 of trough wall surface 332 with the second breasting face 53 at same plane, this first and second breasting face 43,53 forms the breasting face of reflux assembly.And the first return block 40 has the first end face 44 that is in reverse to the first breasting face 43, second return block 50 has one and is in reverse to the second breasting face 53 and with the first end face 44 at conplane second end face 54, and this first and second end face 44,54 forms the end face of reflux assembly.
Secondly, first return block 40 is convexly equipped with a positioning part 45 at the first parting plane 42, second return block 40 is arranged with a location recessed 55 of locating for positioning part 45 at the second parting plane 51 towards direction, bottom surface 52, and positioning part 45 can convert according to actual needs with the design of location recessed 55, in the present embodiment, this positioning part 45 is respectively with location recessed 55 dovetail block and dowetailed housing joint that match.
Moreover, first return block 40 also comprises one at the first parting plane 42 first backflow road 46 recessed towards end face 41 direction and a nail 47 being located at screw rod 30 external spiral conduit 22, and nail 47 is located on first surface 48, second return block 50 also comprises one in the second parting plane 51 second backflow road 56 recessed towards direction, bottom surface 52, and this road 46 that refluxes, second backflow road 56 and first forms a return flow line 92 be communicated with return port 32 and load path.
Finally, the second return block 50 more includes a lug 58, and this lug 58 has the sealed locked groove 581 of a corresponding nut 30, is locked by locked groove 581 and the nut 59 of screw 59 fit lugs 58.
The above is structure and the configuration explanation thereof of embodiment of the present invention main member.As for effect of the embodiment of the present invention, do following explanation.
One, the present invention is applicable at the screw rod of design of not teething.
Consult shown in Fig. 8, ball screw of the present invention is when assembling, first nut 30 is sheathed on screw rod 20, secondly by divided first return block 40 slightly radial deflection nail 47 position can not be interfered with screw rod 20, be able to axially insert in the containing groove 33 of nut 30.Consult shown in Fig. 9, when the first breasting face 43 of the first return block 40 is posted by the trough wall surface 332 of containing groove 33, then by the first return block 40 radial deflection angle, make nail 47 be located at external spiral conduit 22 inside of screw rod 20.Consult shown in Figure 10, and then again the second return block 50 is axially inserted the containing groove 33 of nut 30, and utilize the mutual scarf in the positioning part 45 of the location recessed 55 of the second return block 50 and the first return block 40 to locate.Finally, coordinate the locked groove 581 of the second return block 50 lug 58 to lock with nut 30 by screw 59, reflux assembly is stablized and is locked in the containing groove 33 of nut 30.Present invention, avoiding thread to interfere, therefore screw rod 20 is no longer by the restriction of teething design, and the using scope of ball screw obviously expands.
Two, the applicable nut less at external diameter of the present invention.
The present invention carries out angle design to reflux assembly, limit between included angle A that the bottom surface 52 of the second return block 50 and the second parting plane 51 formed spends between 18 ° ~ 25 °, in addition also height restriction is carried out to first and second return block 40,50, namely the HC1 of the first return block 40 and HC2 of the second return block 50 meets HC2 > HC1, the present invention is made to be applicable to the less nut of external diameter 30, meet the nut 30 of new, old form, refer to nut 30 external diameter meeting European industrial standard (DIN) specification especially.
In sum, the ball screw of tool reflux assembly provided by the invention, the screw rod being applicable to the less nut of external diameter simultaneously and not teething, embodiment in above-mentioned embodiment is preferred embodiment of the present invention, and be not used to limit the present invention, anyly know above operator, when not departing from know-why of the present invention and spirit, the equalization change do above-described embodiment and modification, all belong to the scope that patent of the present invention contains.
Claims (7)
1. a ball screw for tool reflux assembly, is characterized in that, includes:
A screw rod, has an axis and and is arranged at outside external spiral conduit around described axis spiral;
A nut, be sheathed on outside screw rod along described axial direction, and comprise one and be arranged at inner internal spiral conduit around axis spiral, described internal spiral conduit and external spiral conduit form the load path of an accommodating multiple ball, a return port communicated with internal spiral conduit and a containing groove offered along this axial direction by nut end face, and described containing groove comprises groove bottom and the trough wall surface being refluxed hole and wearing of a corresponding external spiral conduit;
A reflux assembly, be located in containing groove along described axial direction, and be divided into first return block and second return block along this axial direction, described first return block comprises an end face, one is in reverse to the first parting plane of end face and connects the first surface of described end face and the first parting plane, described first return block more comprises one at the first parting plane first backflow road recessed towards end face direction and a nail being located at external spiral conduit, and described nail is located on first surface, described second return block comprises one and is plane and the second parting plane being posted by the first parting plane, one is plane and is posted by the bottom surface of described groove bottom, and this bottom surface and the second parting plane shape are in an angle, and described angle is between 18 ° ~ 25 °, described second return block more comprise one the second parting plane recessed towards direction, bottom surface second backflow road, and the second backflow road and first refluxes, road forms a return flow line be communicated with return port and load path, described first parting plane is HC1 to the ultimate range of end face, second parting plane is HC2 to the ultimate range of bottom surface, and meet HC2 > HC1.
2. the ball screw of tool reflux assembly as claimed in claim 1, it is characterized in that: there is between the second parting plane of described second return block and bottom surface the second breasting face that is posted by trough wall surface there is between the first parting plane of described first return block and end face one and be positioned at same plane with the second breasting face and the first breasting face being posted by trough wall surface.
3. the ball screw of tool reflux assembly as claimed in claim 2, it is characterized in that: described first return block has the first end face that is in reverse to the first breasting face, the second return block has one and is in reverse to the second breasting face and with the first end face at conplane second end face.
4. the ball screw of tool reflux assembly as claimed in claim 1, is characterized in that: described first return block is convexly equipped with a positioning part at the first parting plane, and the second return block is arranged with one at the second parting plane towards direction, bottom surface and supplies the location of location, positioning part recessed.
5. the ball screw of tool reflux assembly as claimed in claim 4, is characterized in that: described positioning part is respectively with location is recessed the dovetail block and dowetailed housing joint that match.
6. the ball screw of tool reflux assembly as claimed in claim 1, it is characterized in that: described second return block also includes a lug, this lug has the sealed locked groove of a corresponding nut, and locked groove and the nut lock of a screw fit lugs fasten.
7. the ball screw of tool reflux assembly as claimed in claim 1, is characterized in that: the two ends of the external spiral conduit of described screw rod are closed shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110001007.1A CN102588542B (en) | 2011-01-05 | 2011-01-05 | The ball screw of tool reflux assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110001007.1A CN102588542B (en) | 2011-01-05 | 2011-01-05 | The ball screw of tool reflux assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102588542A CN102588542A (en) | 2012-07-18 |
| CN102588542B true CN102588542B (en) | 2015-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110001007.1A Active CN102588542B (en) | 2011-01-05 | 2011-01-05 | The ball screw of tool reflux assembly |
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| Country | Link |
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| CN (1) | CN102588542B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455274B (en) * | 2013-09-17 | 2017-03-01 | 上银科技股份有限公司 | The ball screw of tool clad type reflux |
| TWI509171B (en) * | 2014-06-16 | 2015-11-21 | Hiwin Tech Corp | Tunnel ball screw |
| CN106969110B (en) * | 2016-01-14 | 2019-03-19 | 上银科技股份有限公司 | The circulating ball screw of axis |
| CN106979293A (en) * | 2017-05-05 | 2017-07-25 | 大连高金数控集团有限公司 | Ball screw assembly, with disome separate type back unit |
| CN109869453B (en) * | 2017-12-04 | 2020-11-13 | 上银科技股份有限公司 | Ball screw |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1699791A (en) * | 2004-05-21 | 2005-11-23 | 上银科技股份有限公司 | General purpose combined end plug |
| CN2830793Y (en) * | 2005-10-19 | 2006-10-25 | 上银科技股份有限公司 | End plug fixture structure of ball nut |
| CN101182876A (en) * | 2006-11-13 | 2008-05-21 | 上银科技股份有限公司 | Return-flow system of ball screw rod |
-
2011
- 2011-01-05 CN CN201110001007.1A patent/CN102588542B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1699791A (en) * | 2004-05-21 | 2005-11-23 | 上银科技股份有限公司 | General purpose combined end plug |
| CN2830793Y (en) * | 2005-10-19 | 2006-10-25 | 上银科技股份有限公司 | End plug fixture structure of ball nut |
| CN101182876A (en) * | 2006-11-13 | 2008-05-21 | 上银科技股份有限公司 | Return-flow system of ball screw rod |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102588542A (en) | 2012-07-18 |
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