CN102588542A - Ball screw with backflow assembly - Google Patents
Ball screw with backflow assembly Download PDFInfo
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- CN102588542A CN102588542A CN2011100010071A CN201110001007A CN102588542A CN 102588542 A CN102588542 A CN 102588542A CN 2011100010071 A CN2011100010071 A CN 2011100010071A CN 201110001007 A CN201110001007 A CN 201110001007A CN 102588542 A CN102588542 A CN 102588542A
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- backflow
- face
- ball screw
- parting plane
- reflux assembly
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Abstract
The invention discloses a ball screw with a backflow assembly. The backflow assembly is mainly divided into a first backflow block and a second backflow block, when assembled, the first backflow block and the second backflow block can be assembled in the ball screw in a segmentation mode so that thread interference is avoided, the backflow assembly is not limited by a thread generation design, is suitable for screws without thread generation, and the application range is obviously enlarged. An included angle of 18-25 degrees is formed between the bottom surface of the second backflow block of the backflow assembly and a second partition surface, and the maximum height of the first backflow block is less than that of the second backflow block so that the ball screw with the backflow assembly is suitable for caps with smaller outer diameters and caps in new and old forms.
Description
Technical field
The present invention relates to ball screw, be meant a kind of ball screw of tool reflux assembly especially.
Background technique
Consult Fig. 1; Schematic representation for the U.S. US4357838 patent No.; A kind of ball screw of tool reflux assembly mainly is provided, and its reflux assembly 11 is to install from the end face axial of nut 12, and reflux assembly 11 has a nail 111; Said nail 111 is convex and is located at external spiral conduit 131 inside of screw rod 13; To be connected screw rod 13 external spiral conduits 131 and reflux assembly 11, each ball 14 is guided the return port (not shown on the figure) that gets into nut 12 through reflux assembly 11, makes the ball 14 between screw rod 13 and the nut 12 can constantly circulate and eliminate the impact force that ball 14 refluxes.Yet; Because the external spiral conduit 131 of screw rod 13 is a kind of concavo-convex cooperations with the nail 111 of reflux assembly 11; Make the wherein end of external spiral conduit 131 of screw rod 13 must be open (general industry is called the teething design); Therefore the shoulder of screw rod 13 also must adopt the teething design, thereby the working life of having reduced ball screw.
Consult Fig. 2; Schematic representation for U.S. US2008/0110284A1 publication number; A kind of ball screw of tool reflux assembly mainly is provided; Though its reflux assembly adopts the design of segmentation, promptly form by backflow piece 16 in and 17 of an exteenal reflux piece, solved the restrictions that screw rod in the past 18 itself must teething.Yet; Because the end face 171 and the bottom surface 172 of exteenal reflux piece 17 are all the plane and are parallel to each other; No angle forms, and therefore this structural design must cooperate the bigger nut of external diameter 19, and is also inapplicable for the nut of special standard; Therefore the nut external diameter of for example European industrial standard (DIN) institute standard lacks applicability.
Summary of the invention
The technical problem that the present invention will solve provides a kind of ball screw of tool reflux assembly, can be applicable to nut that external diameter is less and the screw rod that does not go out dental 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 said axis spiral; A nut; Be sheathed on outside the screw rod along said axial direction; And comprise one and be arranged at inner internal spiral conduit around the axis spiral; Said internal spiral conduit and external spiral conduit form load path, a return port that communicates with the internal spiral conduit and containing groove of being offered along this axial direction by the nut end face of ccontaining a plurality of balls, and said containing groove comprises groove bottom and a trough wall surface that is worn by return port of a corresponding external spiral conduit; A reflux assembly; Be located in the containing groove along said axial direction; And be divided into one first backflow piece and one second backflow piece along this axial direction, and the said first backflow piece comprises an end face, first parting plane that is in reverse to end face, and the said second backflow piece comprises second parting plane that is the plane and is posted by first parting plane, a bottom surface that is the plane and is posted by said groove bottom; And this bottom surface and the second parting plane shape are in an angle; The ultimate range of said first parting plane to end face is HC1, and the ultimate range of second parting plane to bottom surface is HC2, and satisfies relation HC2＞HC1.
The present invention is divided into one first backflow piece and one second backflow piece with the reflux assembly design; When assembling, can segment group be contained in the ball screw; Make the first backflow piece place earlier between screw rod and the nut with the nail that causes interference easily; Again the second backflow piece axially is assembled in the nut subsequently and gets final product, efficiently solve the restriction that screw rod itself in the past is necessary for the teething design.
In addition, the design that the present invention also adopts reflux assembly to have angle, and limit HC1 and HC2 satisfies HC2＞HC1 makes the present invention can be useful in the less nut of external diameter, the nut of, old form new to meet.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is done further detailed explanation:
Fig. 1 is the schematic representation of the U.S. US4357838 patent No.;
Fig. 2 is the schematic representation of U.S. US2008/0110284A1 publication number;
Fig. 3 is a 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 backflow piece of the embodiment of the invention is axially inserted schematic representation;
Fig. 9 is that the first backflow piece of the embodiment of the invention is radially inserted schematic representation;
Figure 10 is that the second backflow piece of the embodiment of the invention is axially inserted schematic representation.
Wherein description of reference numerals is following:
External spiral conduit 131 balls 14
End face 171 bottom surfaces 172
Screw rod 20 axis 21
External spiral conduit 22
Return port 32 containing grooves 33
The first backflow piece, 40 end faces 41
First parting plane, 42 first breasting faces 43
First end face, 44 positioning parts 45
The first backflow road, 46 nails 47
The second backflow piece, 50 second parting planes 51
Second end face, 54 location recessed 55
The second backflow road, 56 lugs 58
Locked groove 581 screws 59
Ball 91 return flow lines 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 invention provided mainly is made up of a screw rod 20, a nut 30 and a reflux assembly.
Reflux assembly is located in the containing groove 33 of nut 30 along axis 21 directions; And be divided into one first backflow piece 40 and one second backflow piece 50 along axis 21 directions; Wherein be divided into and be meant that reflux assembly is posted by containing groove 33 trough wall surfaces 332 and is breasting face along axis 21 directions; And the breasting face of being in reverse to is an end face, is cut apart by breasting face to end face, is divided into first and second backflow piece 40,50.
The first backflow piece 40 comprises an end face 41, first parting plane 42 that is in reverse to end face 41; The second backflow piece 50 comprises second parting plane 51 that is the plane and is posted by first parting plane 42, a bottom surface 52 that is the plane and is posted by groove bottom 331; And bottom surface 52 and second parting plane, 51 shapes are in an angle, and this included angle A is between 18 °～25 °.The ultimate range of first parting plane 42 to the end face 41 is HC1, and the ultimate range of second parting plane 51 to the bottom surface 52 is HC2, and the two satisfies relation HC2＞HC1.
In addition; The recline groove bottom 331 of containing groove 33 of the bottom surface 52 of the second backflow piece 50; And 52 of second parting plane 51 and bottom surfaces have second a breasting face 53 that is posted by containing groove 33 trough wall surfaces 332; First parting plane 42 of the first backflow piece 40 and 41 of end faces have one with the second breasting face 53 on same plane and be posted by the first breasting face 43 of trough wall surface 332, this first and second breasting face 43,53 constitutes the breasting face of reflux assemblies.And the first backflow piece 40 has first end face 44 that is in reverse to the first breasting face 43; The second backflow piece 50 have one be in reverse to the second breasting face 53 and with first end face 44 at conplane second end face 54, this first and second end face 44,54 constitutes the end face of reflux assemblies.
Secondly; The first backflow piece 40 convexes with a positioning part 45 at first parting plane 42; 52 directions are concaved with a location recessed 55 that supplies 45 location, positioning part to the second backflow piece 40 towards the bottom surface at second parting plane 51; And conversion can be carried out according to actual needs with the design of location recessed 55 in positioning part 45, and this positioning part 45 is respectively dovetail block and the dowetailed housing joint that matches with location recessed 55 in the present embodiment.
Moreover; The first backflow piece 40 also comprise one at first parting plane 42 towards the first backflow road 46 and a nail 47 of being located at screw rod 30 external spiral conduits 22 that end face 41 directions are arranged with; The second backflow piece 50 also comprises one in second parting plane 51, the second backflow road 56 that 52 directions are arranged with towards the bottom surface, and this second backflow road 56 forms a return flow line 92 that is communicated with return port 32 and load path with the first backflow road 46.
At last, the second backflow piece 50 more includes a lug 58, and this lug 58 has the sealed locked groove 581 of a corresponding nut 30, and locked groove 581 and nut 59 through screw 59 fit lugs 58 are locked.
The above is the structure and the configuration explanation thereof of embodiment of the invention main member.As for the effect of the embodiment of the invention, do following explanation.
One, the present invention is applicable at the screw rod of design of not teething.
Consult shown in Figure 8; Ball screw of the present invention is when assembling; Earlier nut 30 is sheathed on the screw rod 20, secondly will the divided first backflow piece 40 slightly radial deflection make nail 47 positions can with screw rod 20 interference, be able to axially insert in the containing groove 33 of nut 30.Consult shown in Figure 9ly, when the first breasting face 43 of treating the first backflow piece 40 is posted by the trough wall surface 332 of containing groove 33,, make nail 47 be located at external spiral conduit 22 inside of screw rod 20 again with angle of the first backflow piece, 40 radial deflections.Consult shown in Figure 10ly, and then again the second backflow piece 50 is axially inserted the containing groove 33 of nut 30, and utilize the location recessed 55 of the second backflow piece 50 and the 45 mutual scarves location, positioning part of the first backflow piece 40.At last, cooperate the locked groove 581 of the second backflow piece, 50 lugs 58 to lock, make reflux assembly stablize and be locked in the containing groove 33 of nut 30 with nut 30 by screw 59.The present invention has avoided the thread interference, thus screw rod 20 no longer teethed the design restriction, the using scope of ball screw obviously enlarges.
Two, the present invention is applicable at the less nut of external diameter.
The present invention carries out angle design to reflux assembly; Limit the bottom surface 52 of the second backflow piece 50 and included angle A that second parting plane 51 forms between 18 °～25 ° degree; In addition also first and second backflow piece 40,50 is carried out height restriction, promptly the HC2 of the HC1 of the first backflow piece 40 and the second backflow piece 50 satisfies HC2＞HC1, makes the present invention be applicable to the less nut of external diameter 30; Meet nut 30 new, old form, be meant nut 30 external diameters that meet European industrial standard (DIN) standard especially.
In sum, the ball screw of tool reflux assembly provided by the invention is applicable to nut that external diameter is less and the screw rod of not teething simultaneously; Embodiment in the above-mentioned embodiment is preferred embodiment of the present invention; Be not in order to limiting the present invention, anyly know above operator, under the situation that does not break away from know-why of the present invention and spirit; The equalization that the foregoing description is done changes and modification, all belongs to the scope that patent of the present invention contains.
Claims (9)
1. the ball screw of a tool reflux assembly is characterized in that, includes:
A screw rod has an axis and and is arranged at outside external spiral conduit around said axis spiral;
A nut; Be sheathed on outside the screw rod along said axial direction; And comprise one and be arranged at inner internal spiral conduit around the axis spiral; Said internal spiral conduit and external spiral conduit form load path, a return port that communicates with the internal spiral conduit and containing groove of being offered along this axial direction by the nut end face of ccontaining a plurality of balls, and said containing groove comprises groove bottom and a trough wall surface that is worn by return port of a corresponding external spiral conduit;
A reflux assembly; Be located in the containing groove along said axial direction; And be divided into one first backflow piece and one second backflow piece along this axial direction, and the said first backflow piece comprises an end face, first parting plane that is in reverse to end face, and the said second backflow piece comprises second parting plane that is the plane and is posted by first parting plane, a bottom surface that is the plane and is posted by said groove bottom; And this bottom surface and the second parting plane shape are in an angle; The ultimate range of said first parting plane to end face is HC1, and the ultimate range of second parting plane to bottom surface is HC2, and satisfies HC2＞HC1.
2. the ball screw of tool reflux assembly as claimed in claim 1 is characterized in that: said angle is between 18 °～25 °.
3. the ball screw of tool reflux assembly as claimed in claim 1; It is characterized in that: have second a breasting face that is posted by trough wall surface between second parting plane of the said second backflow piece and bottom surface, have first a breasting face that is positioned at same plane with the second breasting face and is posted by trough wall surface between first parting plane of the said first backflow piece and end face.
4. the ball screw of tool reflux assembly as claimed in claim 3; It is characterized in that: the said first backflow piece has first end face that is in reverse to the first breasting face, the second backflow piece have one be in reverse to the second breasting face and with first end face at conplane second end face.
5. the ball screw of tool reflux assembly as claimed in claim 1 is characterized in that: the said first backflow piece convexes with a positioning part at first parting plane, and direction is concaved with one and supplies the location of location, positioning part recessed the second backflow piece towards the bottom surface at second parting plane.
6. the ball screw of tool reflux assembly as claimed in claim 5 is characterized in that: said positioning part and recessed dovetail block and the dowetailed housing joint that matches that be respectively in location.
7. the ball screw of tool reflux assembly as claimed in claim 1; It is characterized in that: the said first backflow piece more comprise one at first parting plane towards the first backflow road and a nail of being located at the external spiral conduit that the end face direction is arranged with; The second backflow piece more comprises one in second parting plane, the second backflow road that direction is arranged with towards the bottom surface, and the second backflow road forms a return flow line that is communicated with return port and load path with the first backflow road.
8. the ball screw of tool reflux assembly as claimed in claim 1 is characterized in that: the said second backflow piece also includes a lug, and this lug has a locked groove that corresponding nut is sealed, and the locked groove and the nut of a screw fit lugs are locked.
9. 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 said 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 true CN102588542A (en) | 2012-07-18 |
| CN102588542B CN102588542B (en) | 2015-08-19 |
Family
ID=46477614
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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102588542B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455274A (en) * | 2013-09-17 | 2015-03-25 | 上银科技股份有限公司 | Ball screw with coated type reflux device |
| CN105276114A (en) * | 2014-06-16 | 2016-01-27 | 上银科技股份有限公司 | Tunnel type ball screw |
| CN106969110A (en) * | 2016-01-14 | 2017-07-21 | 上银科技股份有限公司 | The circulating ball screw of axle |
| 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 |
| CN109869453A (en) * | 2017-12-04 | 2019-06-11 | 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 |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455274A (en) * | 2013-09-17 | 2015-03-25 | 上银科技股份有限公司 | Ball screw with coated type reflux device |
| 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 |
| CN105276114A (en) * | 2014-06-16 | 2016-01-27 | 上银科技股份有限公司 | Tunnel type ball screw |
| CN106969110A (en) * | 2016-01-14 | 2017-07-21 | 上银科技股份有限公司 | The circulating ball screw of axle |
| 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 |
| CN109869453A (en) * | 2017-12-04 | 2019-06-11 | 上银科技股份有限公司 | Ball screw |
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| Publication number | Publication date |
|---|---|
| CN102588542B (en) | 2015-08-19 |
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