CN102466013A - Nut rotation type ball screw with prepressing structure - Google Patents
Nut rotation type ball screw with prepressing structure Download PDFInfo
- Publication number
- CN102466013A CN102466013A CN2010105427325A CN201010542732A CN102466013A CN 102466013 A CN102466013 A CN 102466013A CN 2010105427325 A CN2010105427325 A CN 2010105427325A CN 201010542732 A CN201010542732 A CN 201010542732A CN 102466013 A CN102466013 A CN 102466013A
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- rolling groove
- screw rod
- nut
- piece
- ball screw
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Abstract
The invention discloses a nut rotation type ball screw with a prepressing structure. The prepressing structure spirally moves to make a prepressing adjusting device displace axially, so that prepressure is respectively generated among a first inner rolling slot, an outer rolling slot and a first rolling member, as well as among a second inner rolling slot, an outer rolling channel and the first rolling member. According to the invention, the traditional procedure for adjusting the complex prepressure is improved, a most time-consuming grinding procedure and a bolt detachment or assembly step are removed, the process for adjusting the prepressure is greatly shortened, and thus, the production cost is reduced.
Description
Technical field
The present invention is a kind of linear actuator, refers to a kind of prepressing structure of screw cap rotating-type ball screw rod especially.
Background technique
See also the screw cap rotating-type ball screw rod 90 of Fig. 1 for existing tool prepressing structure; It comprises: be provided with the nut 91 that through hole supplies screw rod to wear; Said nut 91 outer rims are provided with two sliding channels 911,912; And supply clutch shaft bearing cover 92, precompressed sheet 95 and second bearing housing 93 to be sheathed on outer rim in regular turn; And said clutch shaft bearing cover 92 and second bearing housing 93 is provided with first sliding channel 921 and second sliding channel 931 with respect to the sliding channel 911,912 of nut 91, is respectively equipped with a plurality of roll pieces 94 between said first sliding channel 921 and sliding channel 911 and second sliding channel 931 and the sliding channel 912, and said roll piece 94 provides the driving medium between clutch shaft bearing cover 92, second bearing housing 93 and the nut 91; And said clutch shaft bearing cover 92 and second bearing housing 93 is respectively equipped with first flange 922 and second flange 932; Be respectively equipped with a plurality of first fish eyelets 923 and second fish eyelet 933 on said first flange 922 and second flange 932, said precompressed sheet 95 is arranged between said clutch shaft bearing cover 92 and second bearing housing 93, and is provided with the through hole 951 of said relatively first fish eyelet 923 and second fish eyelet 933; And said first fish eyelet 923, second fish eyelet 933 and through hole 951 supply bolts to wear; Said clutch shaft bearing cover 92 can produce precompression X left when the locking of said bolt, and said second bearing housing 93 can produce precompression Y to the right, produces pressure between roll piece 94 and first sliding channel 921 and the sliding channel 911, reaches and produce pressure between roll piece 94 and second sliding channel 931 and the sliding channel 911 and make; Thus; Can promote precision and the Location accuracy of ball screw when operation, right, the adjustment mode of this precompressed still has following problem points:
1. need be because of the size of precompression through grinding the thickness adjustment of precompressed sheet, so adjustment process needs repeated removal, erection bolt (and bolt is at least more than three groups), so assembly program is numerous and diverse and time-consuming, relative cost is also very high.
2. ball screw is installed on the board major part and all need fixes through flange and board; So some user can require the thickness of flange; But therefore the flange of existing technology is to be made up of precompressed sheet, first flange and second flange, so the thickness of flange is big than the thickness of the flange of integral type, certainly will will grind the plane that contacts between precompressed sheet, first flange and second flange as dwindling flange thickness; But the thickness of first fish eyelet and second fish eyelet is dwindled; The rigidity at said position is reduced, also can draw and ring whole rigidity, produce so cause easily to damage to bolt locking back.
Summary of the invention
Main purpose of the present invention is that the prepressing structure of developing a kind of easy adjustment supplies screw cap rotating-type ball screw rod to use.
Secondary objective of the present invention is, the flange of the ball screw of cap rotating-type is one of the forming.
For reaching above-mentioned purpose, the present invention has taked following technological scheme:
A kind of screw cap rotating-type ball screw rod of tool prepressing structure comprises:
Screw rod is strip structure, and outer rim is provided with spiral helicine sliding channel;
Nut; Have the through hole that supplies said screw rod to wear, said through hole inner edge is provided with the rolling groove of said relatively sliding channel, and said sliding channel and rolling groove form load path; And said nut outer rim is provided with outer rolling groove and outside thread, is provided with the return port that runs through two ends in axle direction in addition;
Reflux assembly is installed on the said nut, and said reflux assembly is provided with the backflow road that connects said load path and return port, and said load path, return port and backflow road form circulating path, and said circulating path is provided with a plurality of second roll pieces;
Bearing housing, it is the structure of ring-type, is provided with in first rolling groove in the rolling groove and second in inner ring surface, and rolling groove forms the path with said outer rolling groove and supplies a plurality of first roll pieces to be installed with in said first, and other is provided with flange in outer ring surface;
The precompressed regulating device; It is the structure of ring-type, is provided with the outer rolling ditch in outer ring surface, and rolling groove formation path supplies a plurality of first roll pieces to be installed with in the said outer rolling ditch and said second; Be provided with internal thread in inner ring surface in addition; Said internal thread and said external thread spiro fastening are arranged on the said nut said precompressed regulating device, and drive said precompressed regulating device with spiral motion and do the axle direction displacement; When said precompressed regulating device during to the first roll piece direction packing; Can make in first between the rolling groove and the outer rolling groove and first roll piece, and the second interior rolling groove and the outer rolling ditch and first roll piece between produce precompression, as be that the reverse displacement of first roll piece then can make said precompression diminish, adjust the precompression size to make things convenient for the user.
As above-mentioned; Said precompressed regulating device is made up of body and adjustment piece; Said outer rolling ditch is arranged at said body, and said internal thread is arranged at said adjustment piece, and said body is sheathed on said nut outer rim and can carries out the axle direction displacement; Said adjustment piece is with internal thread and said external thread spiro fastening; And drive said adjustment piece with spiral motion and do the axle direction displacement, and the said body of said adjustment piece packing, and make in said first between the rolling groove and said outer rolling groove and said first roll piece, and the said second interior rolling groove and said outer rolling ditch and said first roll piece between produce precompression.
As above-mentioned; For the locating effect that increases the precompressed regulating device is provided with the directly fixed hole of direction in the precompressed regulating device, said fixed hole provides the locating piece spiral shell to establish wherein, when said precompression is adjusted to desired value; Be located at said fixed hole through said locating piece spiral shell again; And making an end of said locating piece and said outside thread produce interference and then generation frictional force, generation is become flexible in the time of just can making the precompressed regulating device be difficult for because of running thus, and precompression is disappeared.
The present invention has following beneficial effect than existing technology:
The present invention has improved the adjustment processing procedure of existing complicated precompression; With the most time-consuming grinding processing procedure, and dismounting or the step of erection bolt remove; Significantly shorten the time-histories of precompression adjustment; And flange of the present invention is made as the integrally formed bearing housing that is arranged at, thus can reflect the flange demand of all thickness, to promote the versatility of screw cap rotating-type ball screw rod.
Description of drawings
Understand characteristic of the present invention and technology contents in order more to advance one one, see also following relevant mode of execution explanation of the present invention and graphic, however this mode of execution and graphicly only supply explanation and with reference to usefulness, but not in order to the present invention is done any restriction.
Fig. 1 is the screw cap rotating-type ball screw rod sectional view of existing tool prepressing structure;
Fig. 2 is the screw cap rotating-type ball screw rod exploded view of first embodiment of the invention tool prepressing structure;
Fig. 2 A is the partial enlarged drawing of Fig. 2;
Fig. 3 is the upright figure of the screw cap rotating-type ball screw rod group of first embodiment of the invention tool prepressing structure;
Fig. 4 is Fig. 3 A-A sectional view;
Fig. 4 A is the partial enlarged drawing of Fig. 4;
Fig. 5 is Fig. 3 B-B sectional view;
Fig. 5 A is the partial enlarged drawing of Fig. 5;
Fig. 6 is the screw cap rotating-type ball screw rod exploded view of second embodiment of the invention tool prepressing structure;
Fig. 7 is the upright figure of the screw cap rotating-type ball screw rod group of second embodiment of the invention tool prepressing structure;
Fig. 8 is Fig. 7 C-C sectional view;
Fig. 8 A is the partial enlarged drawing of Fig. 8;
Reference character: 90, screw cap rotating-type ball screw rod; 91, nut; 911,912, sliding channel; 92, clutch shaft bearing cover; 921, first sliding channel; 922, first flange; 923, first fish eyelet; 94, roll piece; 95, precompressed sheet; 951, through hole; 93, second bearing housing; 931, second sliding channel; 932, second flange; 933, second fish eyelet; X, Y, precompression; 1, screw rod; 11, sliding channel; 2, nut; 21, rolling groove; 22, outer rolling groove; 23, return port; 24, outside thread; 3, bearing housing; 3A, outer ring surface; 3B, inner ring surface; 31, the first interior rolling groove; 32, the second interior rolling groove; 33, flange; 4, reflux assembly; 41, backflow road; 5, first roll piece; 6, precompressed regulating device; 61,61B, outer ring surface; 611,611B, outer rolling ditch; 62,61A, internal thread; 63,62A, fixed hole; 6A, adjustment piece; 6B, body; 7, locating piece; 8, second roll piece; Z, precompression; H, axle direction.
Embodiment
See also Fig. 2 to Fig. 5 and be first embodiment of the invention, the present invention is a kind of screw cap rotating-type ball screw rod of tool prepressing structure, comprises:
Screw rod 1 is strip structure, and outer rim is provided with spiral helicine sliding channel 11;
Reflux assembly 4; Be installed on the said nut 2; Said reflux assembly 4 is provided with the backflow road 41 that connects said load path and return port 23, and said load path, return port 23 and backflow road 41 form a circulating path, and said circulating path is provided with a plurality of second roll pieces 8;
Bearing housing 3, it is the structure of ring-type, is provided with in first rolling groove 32 in the rolling groove 31 and second in inner ring surface 3B, rolling groove 31 supplies a plurality of first roll pieces 5 to be installed with said outer rolling groove 22 formation paths in said first, is provided with flange 33 in outer ring surface 3A in addition;
Precompressed regulating device 6; It is the structure of ring-type; Be provided with outer rolling ditch 611 in outer ring surface 61; Rolling groove 32 formation paths supply a plurality of first roll pieces 5 to be installed with in the said outer rolling ditch 611 and said second, are provided with internal thread 62 in inner ring surface in addition, and said internal thread 62 screws togather with said outside thread 24; Said precompressed regulating device 6 is arranged on the said nut 2; And drive said precompressed regulating device 6 with spiral motion and do axle direction H displacement, when said precompressed regulating device 6 during, can make in first between the rolling groove 31 and the outer rolling groove 22 and first roll piece 5 to the 5 direction packings of first roll piece, and second in generation precompression Z between rolling groove 32 and the outer rolling ditch 611 and first roll piece 5; Said precompressed regulating device 6 is as being that the reverse displacement of first roll piece 5 then can make said precompression Z diminish, thus, as long as the said precompressed regulating device 6 of turn can be adjusted precompression Z size.
Moreover; For the locating effect that increases precompressed regulating device 6 is provided with the directly fixed hole 63 of direction in precompressed regulating device 6, said fixed hole 63 provides locating piece 7 spiral shells to establish wherein, when said precompression Z is adjusted to desired value; Be located at said fixed hole 63 through said locating piece 7 spiral shells again; And making an end of said locating piece 7 and said outside thread 24 produce interference and then generation frictional force, generation is become flexible in the time of just can making precompressed regulating device 6 be difficult for because of running thus, and precompression is disappeared.
See also Fig. 6 to Fig. 8 and be the second embodiment of the present invention; Itself and first embodiment's difference are: said precompressed regulating device 6 is made up of body 6B and adjustment piece 6A; The outer ring surface 61B of said body 6B is provided with outer rolling ditch 611B; Rolling groove 32 formation paths supply a plurality of first roll pieces 5 to be installed with in the said outer rolling ditch 611B and said second; And said body 6B is sheathed on said nut 2 outer rims and can carries out the axle direction displacement; The inner ring surface of said adjustment piece 6A is provided with internal thread 61A, and said adjustment piece 6A screws togather with said internal thread 61A and said outside thread 24, and drives said adjustment piece 6A with spiral motion and do axle direction H displacement; And the said body 6B of said adjustment piece 6A packing, and make in first between the rolling groove 31 and the outer rolling groove 22 and first roll piece 5, and second in generation precompression Z between rolling groove 32 and the outer rolling ditch 611B and first roll piece 5.
Moreover said adjustment piece is provided with the described fixed hole 62A like first embodiment, and said fixed hole 62A provides locating piece 7 spiral shells to establish wherein, because produce during running looseningly, and precompression is disappeared to prevent precompressed regulating device 6.All the other structures and configuration all coexist with first embodiment mutually, and much more no longer this give unnecessary details.
In sum; The present invention improves the adjustment processing procedure of existing complicated precompression; With the most time-consuming grinding processing procedure, and dismounting or the step of erection bolt remove, significantly shorten the time-histories of precompression adjustment, and flange of the present invention is made as the integrally formed bearing housing that is arranged at; So the flange demand that can reflect all thickness is to promote the versatility of screw cap rotating-type ball screw rod.
The above embodiment's announcement is not in order to restriction the present invention in order to explanation the present invention, so the displacement of the variation of numerical value and equivalent elements such as must be subordinate to category of the present invention.
Claims (6)
1. the screw cap rotating-type ball screw rod of a tool prepressing structure is characterized in that, comprises:
Screw rod is strip structure, and outer rim is provided with spiral helicine sliding channel;
Nut has the through hole that supplies said screw rod to wear, and said through hole inner edge is provided with the rolling groove of said relatively sliding channel, and said sliding channel and rolling groove form load path, and said nut outer rim is provided with outer rolling groove and outside thread;
Reflux assembly is installed in said nut;
Bearing housing, it is the structure of ring-type, is provided with in first rolling groove in the rolling groove and second in inner ring surface, rolling groove supplies a plurality of first roll pieces to be installed with said outer rolling groove formation path in said first;
The precompressed regulating device; It is the structure of ring-type; Be provided with the outer rolling ditch in outer ring surface, rolling groove formation path supplies a plurality of first roll pieces to be installed with in the said outer rolling ditch and said second, is provided with internal thread in inner ring surface in addition; Said internal thread and said external thread spiro fastening; Said precompressed regulating device is arranged on the said nut, and drives said precompressed regulating device with spiral motion and do the axle direction displacement, make in said first between the rolling groove and said outer rolling groove and said first roll piece, and the said second interior rolling groove and said outer rolling ditch and said first roll piece between produce precompression.
2. the screw cap rotating-type ball screw rod of a tool prepressing structure is characterized in that, comprises:
Screw rod is strip structure, and outer rim is provided with spiral helicine sliding channel;
Nut has the through hole that supplies said screw rod to wear, and said through hole inner edge is provided with the rolling groove of said relatively sliding channel, and said sliding channel and rolling groove form load path, and said nut outer rim is provided with outer rolling groove and outside thread;
Reflux assembly is installed in said nut;
Bearing housing, it is the structure of ring-type, is provided with in first rolling groove in the rolling groove and second in inner ring surface, rolling groove supplies a plurality of first roll pieces to be installed with said outer rolling groove formation path in said first;
The precompressed regulating device is made up of body and adjustment piece; The outer ring surface of said body is provided with the outer rolling ditch; Rolling groove formation path supplies a plurality of first roll pieces to be installed with in the said outer rolling ditch and said second; And said body series is sheathed on said nut outer rim and can carries out the axle direction displacement; The inner ring surface of said adjustment piece is provided with internal thread, and said adjustment piece is with said internal thread and said external thread spiro fastening, and drives said adjustment piece with spiral motion and do the axle direction displacement; And the said body of said adjustment piece packing, make in said first between the rolling groove and said outer rolling groove and said first roll piece, and the said second interior rolling groove and said outer rolling ditch and said first roll piece between produce precompression.
3. according to claim 1 or claim 2 the screw cap rotating-type ball screw rod of tool prepressing structure is characterized in that said nut is provided with the return port that runs through two ends in axle direction.
4. the screw cap rotating-type ball screw rod of tool prepressing structure as claimed in claim 3; It is characterized in that; Said reflux assembly is provided with the backflow road that connects said load path and return port; Said load path, return port and backflow road form circulating path, and said circulating path is provided with a plurality of second roll pieces.
5. the screw cap rotating-type ball screw rod of tool prepressing structure as claimed in claim 1; It is characterized in that; Said precompressed regulating device is provided with the fixed hole of footpath direction, and said fixed hole provides the locating piece spiral shell to establish wherein, and an end of said locating piece and said outside thread generation interference.
6. the screw cap rotating-type ball screw rod of tool prepressing structure as claimed in claim 2 is characterized in that, said adjustment piece is provided with the fixed hole of footpath direction, and said fixed hole provides the locating piece spiral shell to establish wherein, and an end of said locating piece and said outside thread generation interference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105427325A CN102466013A (en) | 2010-11-11 | 2010-11-11 | Nut rotation type ball screw with prepressing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105427325A CN102466013A (en) | 2010-11-11 | 2010-11-11 | Nut rotation type ball screw with prepressing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102466013A true CN102466013A (en) | 2012-05-23 |
Family
ID=46069992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105427325A Pending CN102466013A (en) | 2010-11-11 | 2010-11-11 | Nut rotation type ball screw with prepressing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102466013A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103962932A (en) * | 2013-02-06 | 2014-08-06 | 全球传动科技股份有限公司 | Manufacturing method of ball screw assembly and grinding method of unit of ball screw assembly |
| CN103962931A (en) * | 2013-02-06 | 2014-08-06 | 全球传动科技股份有限公司 | Manufacturing method of ball screw assembly and grinding method of unit of ball screw assembly |
| CN105065596A (en) * | 2015-07-28 | 2015-11-18 | 南京工艺装备制造有限公司 | Nut rotation type ball screw pair with anti-loosening device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58109757A (en) * | 1981-12-24 | 1983-06-30 | Hiroshi Teramachi | Ball screw with support bearing |
| US6406188B1 (en) * | 2000-09-15 | 2002-06-18 | Hiwin Technologies Corp. | Ball bushed bearing screw bolt and nut |
| TW572153U (en) * | 2003-04-08 | 2004-01-11 | Chung-Ching Li | Structure of ball screw |
| CN1654852A (en) * | 2005-03-08 | 2005-08-17 | 南京工艺装备制造厂 | Inner loop end block type ball screw pair |
| US20100220950A1 (en) * | 2006-01-20 | 2010-09-02 | Jtekt Corporation | Method for manufacturing hub unit and hub unit |
-
2010
- 2010-11-11 CN CN2010105427325A patent/CN102466013A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58109757A (en) * | 1981-12-24 | 1983-06-30 | Hiroshi Teramachi | Ball screw with support bearing |
| US6406188B1 (en) * | 2000-09-15 | 2002-06-18 | Hiwin Technologies Corp. | Ball bushed bearing screw bolt and nut |
| TW572153U (en) * | 2003-04-08 | 2004-01-11 | Chung-Ching Li | Structure of ball screw |
| CN1654852A (en) * | 2005-03-08 | 2005-08-17 | 南京工艺装备制造厂 | Inner loop end block type ball screw pair |
| US20100220950A1 (en) * | 2006-01-20 | 2010-09-02 | Jtekt Corporation | Method for manufacturing hub unit and hub unit |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103962932A (en) * | 2013-02-06 | 2014-08-06 | 全球传动科技股份有限公司 | Manufacturing method of ball screw assembly and grinding method of unit of ball screw assembly |
| CN103962931A (en) * | 2013-02-06 | 2014-08-06 | 全球传动科技股份有限公司 | Manufacturing method of ball screw assembly and grinding method of unit of ball screw assembly |
| CN103962932B (en) * | 2013-02-06 | 2016-08-10 | 全球传动科技股份有限公司 | The manufacture method of ball screw device and the grinding method of assembly thereof |
| CN103962931B (en) * | 2013-02-06 | 2016-12-28 | 全球传动科技股份有限公司 | The manufacture method of ball screw device and the grinding method of assembly thereof |
| CN105065596A (en) * | 2015-07-28 | 2015-11-18 | 南京工艺装备制造有限公司 | Nut rotation type ball screw pair with anti-loosening device |
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Application publication date: 20120523 |