CN103244628B - Tangent line external circulation type ball bolt - Google Patents
Tangent line external circulation type ball bolt Download PDFInfo
- Publication number
- CN103244628B CN103244628B CN201210031258.9A CN201210031258A CN103244628B CN 103244628 B CN103244628 B CN 103244628B CN 201210031258 A CN201210031258 A CN 201210031258A CN 103244628 B CN103244628 B CN 103244628B
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- China
- Prior art keywords
- hole
- class
- component
- tangent line
- circulation type
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
- F16H25/2204—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C29/00—Bearings for parts moving only linearly
- F16C29/04—Ball or roller bearings
- F16C29/06—Ball or roller bearings in which the rolling bodies circulate partly without carrying load
- F16C29/0633—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides
- F16C29/0635—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end
- F16C29/0638—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end with balls
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a kind of tangent line external circulation type ball bolt, comprise: a screw rod; One nut, it is provided with a through hole worn for this screw rod, and the outer surface in this nut is provided with multiple mounting hole be communicated with this through hole, and this mounting hole comprises: first holds hole and second holds hole; This first appearance hole and second holds hole and is connected, this the first width holding hole is greater than the width in the second appearance hole, this first degree of depth holding hole is less than the degree of depth in this second appearance hole, and the aperture size holding hole by this first appearance hole and second is different, effectively to apply the confined space of this nut; By this mounting hole with the design of multistage level, this mounting hole can not be produced with rolling groove and interfere.
Description
Technical field
The present invention relates to a kind of Linear transmission element, refer in particular to a kind of tangent line external circulation type ball bolt.
Background technique
Refer to shown in Fig. 1 to Fig. 5, for known used tangent line external circulation type ball bolt at present, this tangent line external circulation type ball bolt comprises: a screw rod 4, its outer edge surface is provided with spiral helicine sliding channel 41, one nut 1, it is provided with a through hole 11 worn for this screw rod 4, the inner edge surface of this through hole 11 is provided with the rolling groove 111 of this sliding channel 41 relatively, this sliding channel 41 forms a load path with rolling groove 111, outer surface in this nut 1 is provided with multiple mounting hole 12 be communicated with this through hole 11, and multiple screw hole 13, this mounting hole 12 is connected mutually with this rolling groove 111, and be provided with a breasting face 121 in this joining place neighbour, at least one back-flow component 2, this back-flow component 2 is ㄇ font, the two ends of this ㄇ font are defined as foot A, and between two foot A, be defined as convergence part B, two foot A are inserted in this mounting hole 12 respectively, and this convergence part B is by being located at the outer edge surface of this nut 1, this back-flow component 2 is provided with a backflow road 23, the through two foot A and convergence part B in this backflow road 23, and the two ends in this backflow road 23 are connected with this load path and are the design of tangent-type return flow path, and can be learnt by Fig. 1 and Fig. 2, this back-flow component is by two pieces component 22, 21 compositions, if be divided into, two-piece main is convenient to be manufactured, two components 22, 21 are respectively equipped with half backflow road 222, 211, two halves backflow road 222, 211 form this backflow road 23, separately, this back-flow component 2 is provided with the perforation 221 of this screw hole 13 relatively, after this perforation 221 wears for multiple screw 3, this screw 3 screws togather locking with this screw hole 13, this back-flow component 2 is made to be fixed on this nut 1.
So, the structural design of this kind of tangent line external circulation type ball bolt also cannot be applicable to the load path (be made up of sliding channel 41 and rolling groove 111) of low helical pitch, [note: the spacing being meant to load path of so-called low helical pitch is little, in other words, the axle direction X thickness at the position (industry is commonly called as usually: tooth peak) exactly between adjacent sliding channel 41 or rolling groove 111 is less, and the axle direction X thickness at low helical pitch tooth peak will be less than the axle direction X thickness at high helical pitch tooth peak], because this mounting hole 12 is designed to a slotted eye at present, can produce with rolling groove 111 after machining and interfere (referring to Fig. 2 and Fig. 3), and make rolling groove 111 both sides be connected with this mounting hole 12 produce damaged R, the namely broken tooth that is commonly called as of industry, this nut 1 is caused to use and must scrap, this is also the difficult problem that current industry runs in the tangent line external circulation type ball bolt manufacturing low helical pitch, if therefore have client for buying the tangent line external circulation type ball bolt of low helical pitch, capital suggestion client selects other endless form (such as: Inner eycle etc.), but because tangent line outer circulation has Inner eycle and is beyond one's reach without impact type return flow path advantage, the running noise of ball screw can be made to reduce, permission running rotating speed comparatively Inner eycle significantly promotes, therefore some client is also because value its advantage just can select the use of tangent line external circulation type ball bolt, therefore how to make tangent line external circulation type ball bolt be applied to the specification of low helical pitch, for current industry actively improves the emphasis of exploitation.
In view of this, the present inventor does not attain perfect caused many disappearances and inconvenience in above-mentioned tangent line external circulation type ball bolt structural design, and deeply conceives, and active research improvement has a fling at and development and Design goes out this case.
Summary of the invention
The object of the present invention is to provide a kind of tangent line external circulation type ball bolt of low helical pitch, this mounting hole can not be produced with rolling groove and interfere, to reach the object of specification tangent line external circulation type ball bolt being applied to low helical pitch.
In order to reach above-mentioned purpose, solution of the present invention is:
A kind of tangent line external circulation type ball bolt, comprises:
One screw rod, its outer edge surface is provided with spiral helicine sliding channel;
One nut, it is provided with a through hole worn for this screw rod, and the inner edge surface of this through hole is provided with the rolling groove of this sliding channel relatively, and this sliding channel and rolling groove form a load path, and the outer surface in this nut is provided with multiple mounting hole be communicated with this through hole;
One back-flow component, this back-flow component is provided with two foots, be connected by convergence part between two these foots, two these foots are inserted in this mounting hole respectively, this convergence part is by being located at the outer edge surface of this nut, this back-flow component is provided with a backflow road, this backflow road through two this foot and convergence part, and the two ends in this backflow road are connected with this load path;
This mounting hole comprises: first holds hole and second holds hole; This first appearance hole and second holds hole and is connected, and this first width holding hole is greater than the width in the second appearance hole, and this first degree of depth holding hole is less than the degree of depth in this second appearance hole.
Above-mentioned each foot first holds first portion of class in hole by being relatively located in this and is located in this and second holds second portion of class in hole and formed respectively.
External form profile this first Internal periphery holding hole relative in above-mentioned first portion of class is arranged, Internal periphery setting in external form profile this second appearance hole relative in this portion of the second class.
Above-mentioned back-flow component is made up of the first component and second component, and this first component and second component are respectively equipped with half backflow road, and two halves backflow road forms backflow road, and this portion of the first class and the second portion of class are arranged at this first component.
Above-mentioned first holds hole is provided with at least one breasting face, this first component is provided with first abutment facing in this breasting face relatively, this portion of the first class is provided with second abutment facing in this breasting face relatively, this first abutment facing and the second abutment facing are connected formation one abutment facing mutually, and this abutment facing is resisted against this breasting face.
After adopting said structure, the foot of the back-flow component of tangent line external circulation type ball bolt of the present invention is set to the first portion of class and the second portion of class, therefore the width designing this first appearance hole is greater than the width in the second appearance hole, this first degree of depth holding hole is less than the degree of depth in this second appearance hole, by this mounting hole, with the design of multistage level, (the present embodiment is two classes, but the mounting hole of more than two classes is also can be designed as in response to restriction spatially) match with the second portion of class with the first portion of class of the foot of this back-flow component, this mounting hole can not be produced with rolling groove interfere, to reach the object of specification tangent line external circulation type ball bolt being applied to low helical pitch.And in time processing this mounting hole, only need can complete processing by the facing cutter of two kinds of different-diameters, larger-diameter facing cutter is used for processing this and first holds hole, and small diameter is then used for processing second and holds hole.
Accompanying drawing explanation
Fig. 1 is the exploded view of the tangent line external circulation type ball bolt of known techniques;
Fig. 2 is another visual angle exploded view of the tangent line external circulation type ball bolt of known techniques;
Fig. 3 is the constitutional diagram of the tangent line external circulation type ball bolt of known techniques;
Fig. 3 A is the enlarged view at I place in Fig. 3;
Fig. 4 is the sectional view of direction, the footpath cutting of the nut of known techniques, is see it with top view;
Fig. 5 is that the back-flow component of known techniques is combined in nut, and with the sectional view of direction, footpath cutting, is see it with top view;
Fig. 6 is the exploded view of tangent line external circulation type ball bolt of the present invention;
Fig. 7 is another visual angle exploded view of tangent line external circulation type ball bolt of the present invention;
Fig. 8 is the constitutional diagram of tangent line external circulation type ball bolt of the present invention;
Fig. 9 is the sectional view of direction, the footpath cutting of nut of the present invention, see it with top view, main represent that first holds hole and second to hold the degree of depth in hole different;
Figure 10 is that back-flow component of the present invention is combined in nut, and with the sectional view of direction, footpath cutting, is see it with top view;
Figure 11 is that back-flow component of the present invention is combined in nut, and with the sectional view of direction, footpath cutting, is see it with top view, and the main display breasting face of mounting hole coordinates with the abutment facing of back-flow component;
Figure 11 A is the enlarged view at J place in Figure 11;
Figure 12 is the sectional view of the axle direction cutting of nut of the present invention, and the main display breasting face of mounting hole coordinates with the abutment facing of back-flow component;
Figure 12 A is the enlarged view at K place in Figure 12.
Primary component symbol description
Known techniques
1 nut 11 through hole 111 rolling groove
12 mounting hole 121 breasting face 13 screw holes
2 back-flow component 22,21 components 221 are bored a hole
222,211 half backflow road 3 screws
4 screw rod 41 sliding channel A foots
The damaged X-axis direction of B convergence part R
The present invention
1 nut 11 through hole 111 rolling groove
12 mounting holes 121 first hold hole 122 second and hold hole
123 breasting face 13 screw hole 2 back-flow components
22 first components 211 half backflow road 212 first abutment facings
21 second components 221 are bored a hole 222 first portions of class
223 second abutment facings 225 half backflow road, portions of class 224 second
23 backflow road 24 guide portion 3 screws
4 screw rod 41 sliding channel H, h degree of depth
D, d width X-axis direction A foot
B convergence part Y abutment facing.
Embodiment
In order to explain technological scheme of the present invention further, below by specific embodiment, the present invention will be described in detail.
Referring to shown in Fig. 6 to Figure 12, is a preferred embodiment of the present invention, and the present invention is a kind of tangent line external circulation type ball bolt, comprises:
One screw rod 4, its outer edge surface is provided with spiral helicine sliding channel 41;
One nut 1, it is provided with a through hole 11 worn for this screw rod 4, the inner edge surface of this through hole 11 is provided with the rolling groove 111 of this sliding channel 41 relatively, this sliding channel 41 forms a load path with rolling groove 111, this load path is installed with multiple rolling element (not shown), outer surface in this nut 1 is provided with multiple mounting hole 12 be communicated with this through hole 11, and multiple screw hole 13, and this mounting hole 12 comprises: first holds hole 121 and second holds hole 122; This first appearance hole 121 and the second appearance hole 122 are connected, and this first width D holding hole 121 is greater than the width d in the second appearance hole 122, and this first depth H holding hole 121 is less than the degree of depth h in this second appearance hole 122, as shown in figs. 6 and 9; And this first appearance hole 121 is provided with at least one breasting face 123, the present embodiment is two breasting faces 123;
One back-flow component 2, this back-flow component 2 is provided with two foot A, and be connected by convergence part B between two foot A, two foot A are inserted in this mounting hole 12 respectively, and two foot A first hold first portion of class 222 in hole 121 by being relatively located in this and are located in this and second hold second portion of class 223 in hole 122 and formed respectively, the external form profile in this portion of the first class 222 is arranged in the present embodiment this first Internal periphery holding hole 121 relative, the external form profile in this portion of the second class 223 is arranged in the present embodiment this second Internal periphery holding hole 122 relative, closely sealed and the second portion of class 223 and second so by the first portion of class 222 and the first appearance hole 121 holds the closely sealed to prevent foreign matter dust from entering this through hole of hole 122, and the back-flow component 2 of the present embodiment is made up of the first component 22 and second component 21, if be divided into, two-piece main is convenient to be manufactured, this first component 22 and second component 21 are respectively equipped with half backflow road 225, 211, two halves backflow road 225, 211 form a backflow road 23, the through two foot A and convergence part B in this backflow road 23, and the two ends in this backflow road 23 are connected mutually with the tangent direction of this load path along load path, and this back-flow component 2 is respectively equipped with a guide portion 24 in the two ends in this backflow road 23, this guide portion 24 protrudes out setting towards this sliding channel, and be located in this sliding channel, this backflow road 23 is entered in order to guide multiple rolling element, this first component 22 is provided with first abutment facing 212 in this breasting face 123 relatively, this portion of the first class 222 is provided with second abutment facing 224 in this breasting face 123 relatively, this first abutment facing 212 is connected formation one abutment facing Y with the second abutment facing 224 mutually in the present embodiment, and this abutment facing Y is resisted against this breasting face 123, contact (referring to shown in Figure 11 and Figure 12) by this breasting face 123 with abutment facing Y, Shi Liang foot A can be more firm be arranged at this mounting hole 12, and this convergence part B is by being located at the outer edge surface of this nut 1, separately, this back-flow component 2 is provided with the perforation 221 of this screw hole 13 relatively, and after this perforation 221 wears for multiple screw 3, this screw 3 screws togather locking with this screw hole 13, makes this back-flow component 2 be fixed on this nut 1, and aforementioned this two foot A, perforation 221 and this portion of the first class 222 and this portion of the second class 223 are located at this first component 22.
The structure of each element and mutual configuration are more than described, the design principle that nut of the present invention and back-flow component are below described and the effect reached:
Refer to shown in Fig. 6 to Figure 12, the mounting hole commonly used at present is designed to the aperture of same size, therefore mounting hole and rolling groove can produce interference, and the foot A of back-flow component 2 of the present invention is set to the first portion of class 222 and the second portion of class 223, therefore the width D designing this first appearance hole 121 is greater than the width d in the second appearance hole 122, this first depth H holding hole 121 is less than the degree of depth h in this second appearance hole 122, by this mounting hole 12, with the design of multistage level, (the present embodiment is two classes, but the mounting hole of more than two classes is also can be designed as in response to restriction spatially) match with the second portion of class 223 with first portion of class 222 of the foot A of this back-flow component 2, this mounting hole 12 can not be produced with rolling groove 11 interfere, to reach the object of specification tangent line external circulation type ball bolt being applied to low helical pitch.And in time processing this mounting hole 12, only need can complete processing by the facing cutter of two kinds of different-diameters, larger-diameter facing cutter is used for processing this and first holds hole 121, and small diameter is then used for processing second and holds hole 122.
Above-described embodiment and accompanying drawing non-limiting product form of the present invention and style, any person of an ordinary skill in the technical field, to its suitable change done or modification, all should be considered as not departing from patent category of the present invention.
Claims (5)
1. a tangent line external circulation type ball bolt, comprises:
One screw rod, its outer edge surface is provided with spiral helicine sliding channel;
One nut, it is provided with a through hole worn for this screw rod, and the inner edge surface of this through hole is provided with the rolling groove of this sliding channel relatively, and this sliding channel and rolling groove form a load path, and the outer surface in this nut is provided with multiple mounting hole be communicated with this through hole;
One back-flow component, this back-flow component is provided with two foots, be connected by convergence part between two these foots, two these foots are inserted in this mounting hole respectively, this convergence part is by being located at the outer edge surface of this nut, this back-flow component is provided with a backflow road, this backflow road through two this foot and convergence part, and the two ends in this backflow road are connected with this load path;
It is characterized in that: this mounting hole comprises: first holds hole and second holds hole; This first appearance hole and second holds hole and is connected, and this first width holding hole is greater than the width in the second appearance hole, and this first degree of depth holding hole is less than the degree of depth in this second appearance hole.
2. tangent line external circulation type ball bolt as claimed in claim 1, is characterized in that: each foot first holds first portion of class in hole by being relatively located in this and is located in this second second portion of class holding hole and forms respectively.
3. tangent line external circulation type ball bolt as claimed in claim 2, is characterized in that: the external form profile in this portion of the first class relatively this first Internal periphery holding hole is arranged, and the external form profile in this portion of the second class relatively this second Internal periphery holding hole is arranged.
4. tangent line external circulation type ball bolt as claimed in claim 2, it is characterized in that: back-flow component is made up of the first component and second component, this first component and second component are respectively equipped with half backflow road, two halves backflow road forms backflow road, and this portion of the first class and the second portion of class are arranged at this first component.
5. tangent line external circulation type ball bolt as claimed in claim 4, it is characterized in that: this first appearance hole is provided with at least one breasting face, this first component is provided with first abutment facing in this breasting face relatively, this portion of the first class is provided with second abutment facing in this breasting face relatively, this first abutment facing and the second abutment facing are connected formation one abutment facing mutually, and this abutment facing is resisted against this breasting face.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210031258.9A CN103244628B (en) | 2012-02-13 | 2012-02-13 | Tangent line external circulation type ball bolt |
| KR1020120035951A KR101273802B1 (en) | 2012-02-13 | 2012-04-06 | Tangentially directed outer-circulating ball screw |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210031258.9A CN103244628B (en) | 2012-02-13 | 2012-02-13 | Tangent line external circulation type ball bolt |
| KR1020120035951A KR101273802B1 (en) | 2012-02-13 | 2012-04-06 | Tangentially directed outer-circulating ball screw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103244628A CN103244628A (en) | 2013-08-14 |
| CN103244628B true CN103244628B (en) | 2015-12-09 |
Family
ID=67477328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210031258.9A Active CN103244628B (en) | 2012-02-13 | 2012-02-13 | Tangent line external circulation type ball bolt |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR101273802B1 (en) |
| CN (1) | CN103244628B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909745B (en) * | 2016-06-13 | 2018-05-11 | 宁波海迈克精密机械制造有限公司 | A kind of ball screw assembly, |
| CN113028016B (en) * | 2019-12-24 | 2022-09-27 | 银泰科技股份有限公司 | External circulation ball screw with return pipe structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2396239Y (en) * | 1999-10-29 | 2000-09-13 | 上银科技股份有限公司 | External circulation type ball bolt |
| CN1807933A (en) * | 2005-01-19 | 2006-07-26 | 李茂碷 | High speed muting structure for ball screw |
| CN101182875A (en) * | 2006-11-13 | 2008-05-21 | 上银科技股份有限公司 | Roller screw rod system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5023550B2 (en) * | 2006-05-12 | 2012-09-12 | 日本精工株式会社 | Ball screw |
| JP2009097532A (en) | 2007-10-12 | 2009-05-07 | Shangyin Sci & Technol Co Ltd | Externally circulating ball screw |
| US20100170359A1 (en) * | 2009-01-06 | 2010-07-08 | Hiwin Technologies Corp. | Ball return device for ball screw device |
-
2012
- 2012-02-13 CN CN201210031258.9A patent/CN103244628B/en active Active
- 2012-04-06 KR KR1020120035951A patent/KR101273802B1/en active IP Right Grant
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2396239Y (en) * | 1999-10-29 | 2000-09-13 | 上银科技股份有限公司 | External circulation type ball bolt |
| CN1807933A (en) * | 2005-01-19 | 2006-07-26 | 李茂碷 | High speed muting structure for ball screw |
| CN101182875A (en) * | 2006-11-13 | 2008-05-21 | 上银科技股份有限公司 | Roller screw rod system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103244628A (en) | 2013-08-14 |
| KR101273802B1 (en) | 2013-06-11 |
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