CN103244628A - Tangent external circulating ball screw - Google Patents
Tangent external circulating ball screw Download PDFInfo
- Publication number
- CN103244628A CN103244628A CN2012100312589A CN201210031258A CN103244628A CN 103244628 A CN103244628 A CN 103244628A CN 2012100312589 A CN2012100312589 A CN 2012100312589A CN 201210031258 A CN201210031258 A CN 201210031258A CN 103244628 A CN103244628 A CN 103244628A
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- China
- Prior art keywords
- hole
- class
- tangent line
- circulation type
- type ball
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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 tangent external circulating ball screw which comprises a screw and a screw cap. The screw cap is provided with a through hole allowing the screw to penetrate through, a plurality of mounting holes communicated with the through hole is arranged on the outer surface of the screw cap, the mounting holes comprises first holding holes and second holding holes which are mutually communicated, and the first holding holes are larger than the second holding holes in width and smaller than the same in depth. Due to the first holding holes and the second holding holes are different in hole diameter size, limited space of the screw cap is effectively utilized; and due to the mounting holes and multi-step design, interference between the mounting holes and a rolling groove is generated.
Description
Technical field
The present invention relates to a kind of linear transmission component, refer in particular to a kind of tangent line external circulation type ball bolt.
Background technique
See also Fig. 1 to shown in Figure 5, be present known employed tangent line external circulation type ball bolt, 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 that supplies this screw rod 4 to wear, 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 constitutes a load path with rolling groove 111, outer surface in this nut 1 is provided with a plurality of mounting holes 12 that are communicated with this through hole 11, and a plurality of screw holes 13, this mounting hole 12 is connected mutually with this rolling groove 111, and is provided with a breasting face 121 in this joining place neighbour; At least one back-flow component 2, this back-flow component 2 is the ㄇ font, the two ends of this ㄇ font are defined as the A of foot, and be defined as convergence part B between two A of foot, two A of foot 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, this backflow road 23 connects two A of foot and convergence part B, and two ends that should backflow road 23 are connected with this load path and be 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 members 22,21 form, and two-piece main is convenient makes two members 22 if be divided into, 21 are respectively equipped with half backflow road 222,211, two halves backflow road 222,211 constitute this backflow road 23, in addition, this back-flow component 2 is provided with the perforation 221 of this screw hole 13 relatively, after this perforation 221 wears for a plurality of screws 3, this screw 3 screws togather locking with this screw hole 13, makes this back-flow component 2 be fixed in this nut 1.
So, the structural design of this kind tangent line external circulation type ball bolt also can't be applicable to the load path (being made of sliding channel 41 and rolling groove 111) that hangs down helical pitch, [annotate: the meaning of so-called low helical pitch is that the spacing of load path is little, in other words, (industry is commonly called as usually: the axle direction X thickness tooth peak) is less at position between adjacent sliding channel 41 or rolling groove 111 exactly, and the axle direction X thickness at low helical pitch tooth peak will be littler 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 (seeing also Fig. 2 and Fig. 3), and make rolling groove 111 both sides that are connected with this mounting hole 12 produce damaged R, the broken tooth that is commonly called as of industry just, cause this nut 1 to use and must scrap, this also is the difficult problem that present industry runs in the tangent line external circulation type ball bolt of making low helical pitch, if buy the tangent line external circulation type ball bolt of low helical pitch so client's desire is arranged, the endless form that suggestion client in capital selects other for use (for example: interior circulation etc.), but because the tangent line outer circulation has the interior no impact type return flow path advantage that is beyond one's reach that circulates, the running noise of ball screw is reduced, allow the interior circulation of running rotating speed significantly to promote, therefore some client just can select the use of tangent line external circulation type ball bolt because value its advantage, so how to make the tangent line external circulation type ball bolt be applied to the specification of low helical pitch, for industry is at present actively improved the emphasis of exploitation.
In view of this, the inventor is not at attaining perfect many disappearances and the inconvenience that causes on the above-mentioned tangent line external circulation type ball bolt structural design, and deeply design, and the 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 produced with rolling groove interfere, to reach the purpose that the tangent line external circulation type ball bolt is applied to the specification of 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 that wears 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 constitute a load path, are provided with a plurality of mounting holes that are communicated with this through hole in the outer surface of this nut;
One back-flow component, this back-flow component is provided with two foots, be to be connected by the 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, and this backflow road connects two this foot and convergence parts, and two ends that should the backflow road are connected with this load path;
This mounting hole comprises: first holds hole and second holds the hole; This first appearance hole and second holds the hole and is connected, and this first width that holds the hole holds the width in hole greater than second, and the degree of depth in this first appearance hole is less than the degree of depth in this second appearance hole.
Above-mentioned two foot sections first do not hold first portion of class in hole and are located in this second second portion of class that holds the hole and constituted by being located in this relatively.
The external form profile of above-mentioned first portion of class is the interior profile setting in this first appearance hole relatively, and the external form profile of this portion of second class is the interior profile setting in this second appearance hole relatively.
Above-mentioned back-flow component is made up of first member and second member, and this first member and second member are respectively equipped with half backflow road, and two halves backflow road constitutes the backflow road, and this portion of first class and second portion of class are arranged at this first member.
Above-mentioned first holds the hole is provided with at least one breasting face, this first member is provided with first abutment facing of this this breasting face relatively, this portion of first class is provided with second abutment facing of this breasting face relatively, this first abutment facing is connected formation one abutment facing mutually with second abutment facing, and this abutment facing is resisted against this breasting face.
Above-mentioned first member is provided with two foots.
After adopting said structure, the foot of the back-flow component of tangent line external circulation type ball bolt of the present invention is made as first portion of class and second portion of class, hold the width in hole so design this first width that holds the hole greater than second, the degree of depth in this first appearance hole is less than the degree of depth in this second appearance hole, (present embodiment is two classes with the design of multistage level by this mounting hole, but also can be designed as mounting hole more than two classes in response to the restriction on the space) match with second portion of class with first portion of class of the foot of this back-flow component, this mounting hole can not produced with rolling groove interfere, to reach the purpose that the tangent line external circulation type ball bolt is applied to the specification of low helical pitch.And when this mounting hole of processing, only need can finish processing by the facing cutter of two kinds of different-diameters, larger-diameter facing cutter is used for processing this first appearance hole, then is used for processing second than minor diameter and holds the hole.
Description of drawings
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 among Fig. 3;
Fig. 4 is the footpath direction side cross sectional view of the nut of known techniques, is to see it with top view;
Fig. 5 is combined in nut for the back-flow component of known techniques, and with footpath direction side cross sectional view, is to 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 footpath direction side cross sectional view of nut of the present invention, see it with top view, mainly representing first, to hold the hole different with the degree of depth in the second appearance hole;
Figure 10 is combined in nut for back-flow component of the present invention, and with footpath direction side cross sectional view, is to see it with top view;
Figure 11 is combined in nut for back-flow component of the present invention, and with footpath direction side cross sectional view, is to see it with top view, and the breasting face that mainly shows mounting hole cooperates with the abutment facing of back-flow component;
Figure 11 A is the enlarged view at J place among Figure 11;
Figure 12 is the axle direction side cross sectional view of nut of the present invention, and the breasting face that mainly shows mounting hole cooperates with the abutment facing of back-flow component;
Figure 12 A is the enlarged view at K place among Figure 12.
The primary component symbol description
Known techniques
1 nut, 11 through holes, 111 rolling grooves
12 mounting holes, 121 breasting faces, 13 screw holes
2 back-flow components 22,221 perforation of 21 members
222,211 half backflow roads, 3 screws
4 screw rods, 41 sliding channel A foots
The damaged X-axis direction of B convergence part R
The present invention
1 nut, 11 through holes, 111 rolling grooves
12 mounting holes 121 first hold hole 122 second and hold the hole
123 breasting faces, 13 screw holes, 2 back-flow components
22 first members, 211 half backflow roads, 212 first abutment facings
21 second members, 221 perforation, 222 first portions of class
223 second portions of class, 224 second abutment facings, 225 half backflow roads
23 backflow roads, 24 guide portions, 3 screws
4 screw rods, 41 sliding channel H, the h degree of depth
D, d width X-axis direction A foot
B convergence part Y abutment facing.
Embodiment
In order further to explain technological scheme of the present invention, the present invention will be described in detail below by specific embodiment.
See also Fig. 6 to shown in Figure 12, be a preferred embodiment of the present invention, the present invention is a kind of tangent line external circulation type ball bolt, comprises:
One screw rod 4, its outer edge surface are provided with spiral helicine sliding channel 41;
One nut 1, it is provided with a through hole 11 that supplies this screw rod 4 to wear, 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 constitutes a load path with rolling groove 111, this load path is installed with a plurality of rolling element (not shown)s, outer surface in this nut 1 is provided with a plurality of mounting holes 12 that are communicated with this through hole 11, and a plurality of screw holes 13, and this mounting hole 12 comprises: first holds hole 121 and second holds hole 122; This first appearance hole 121 and second holds hole 122 and is connected, and this first width D of holding hole 121 is held the width d in hole 122 greater than second, and the depth H in this first appearance hole 121 is less than the degree of depth h in this second appearance hole 122, as Fig. 6 and shown in Figure 9; And this first appearance hole 121 is provided with at least one breasting face 123, and present embodiment is two breasting faces 123;
One back-flow component 2, this back-flow component 2 is provided with two A of foot, and be to be connected by convergence part B between two A of foot, two A of foot are inserted in this mounting hole 12 respectively, and two A of foot first hold first portion of class 222 in hole 121 and are located in this second second portion of class 223 that holds hole 122 and constituted by being located in this relatively respectively, the external form profile of this portion of first class 222 is in the present embodiment interior profile setting in this first appearance hole 121 relatively, the external form profile of this portion of second class 223 so enters this through hole by the driving fit in first portion of class 222 and the first appearance hole 121 and the driving fit in second portion of class 223 and the second appearance hole 122 to prevent the foreign matter dust in the present embodiment interior profile setting in this second appearance hole 122 relatively; And the back-flow component 2 of present embodiment is made up of first member 22 and second member 21, two-piece main is convenient to be made if be divided into, this first member 22 and second member 21 are respectively equipped with half backflow road 225,211, two halves backflow road 225,211 constitute a backflow road 23, this backflow road 23 connects two A of foot and convergence part B, and two ends that should 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, in order to guide a plurality of rolling elements to enter this backflow road 23, this second member 21 is provided with first abutment facing 212 of this breasting face 123 relatively, this portion of first class 222 is provided with second abutment facing 224 of this breasting face 123 relatively, this first abutment facing 212 is connected formation one abutment facing Y with second abutment facing 224 mutually in present embodiment, and this abutment facing Y is resisted against this breasting face 123, by contact (see also Figure 11 and shown in Figure 12) of this breasting face 123 with abutment facing Y, make this mounting hole 12 that is arranged at that two A of foot can be more firm, and this convergence part B is by being located at the outer edge surface of this nut 1; In addition, this back-flow component 2 is provided with the perforation 221 of this screw hole 13 relatively, and after this perforation 221 wore for a plurality of screws 3, this screw 3 screwed togather locking with this screw hole 13, makes this back-flow component 2 be fixed in this nut 1; And the aforementioned A of this two foot, perforation 221 and this portion of first class 222 and this portion of second class 223 are located at this first member 22.
Structure and the mutual configuration of each element more than are described, below explanation nut of the present invention and the design principle of back-flow component and the effect of reaching:
See also Fig. 6 to shown in Figure 12, the mounting hole of commonly using at present is designed to the aperture of same size, so mounting hole and rolling groove can produce interference; And the A of foot of back-flow component 2 of the present invention is made as first portion of class 222 and second portion of class 223, hold the width d in hole 122 so design this first width D of holding hole 121 greater than second, the depth H in this first appearance hole 121 is less than the degree of depth h in this second appearance hole 122, (present embodiment is two classes with the design of multistage level by this mounting hole 12, but also can be designed as mounting hole more than two classes in response to the restriction on the space) match with second portion of class 223 with first portion of class 222 of the A of foot of this back-flow component 2, this mounting hole 12 can not produced with rolling groove 11 interfere, to reach the purpose that the tangent line external circulation type ball bolt is applied to the specification of low helical pitch.And when this mounting hole 12 of processing, only need can finish processing by the facing cutter of two kinds of different-diameters, larger-diameter facing cutter is used for processing this first appearance hole 121, then is used for processing second than minor diameter and holds hole 122.
Above-described embodiment and accompanying drawing and non-limiting product form of the present invention and style, any person of an ordinary skill in the technical field all should be considered as not breaking away from patent category of the present invention to its suitable variation or modification of doing.
Claims (6)
1. 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 that wears 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 constitute a load path, are provided with a plurality of mounting holes that are communicated with this through hole in the outer surface of this nut;
One back-flow component, this back-flow component is provided with two foots, be to be connected by the 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, and this backflow road connects two this foot and convergence parts, and two ends that should the backflow road are connected with this load path;
It is characterized in that: this mounting hole comprises: first holds hole and second holds the hole; This first appearance hole and second holds the hole and is connected, and this first width that holds the hole holds the width in hole greater than second, and the degree of depth in this first appearance 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: two foot sections first do not hold first portion of class in hole and are located in this second second portion of class that holds the hole and constituted by being located in this relatively.
3. tangent line external circulation type ball bolt as claimed in claim 2 is characterized in that: the interior profile setting in relative this first appearance hole of the external form profile of this portion of first class, the interior profile setting in relative this second appearance hole of the external form profile of this portion of second class.
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 first member and second member, this first member and second member are respectively equipped with half backflow road, two halves backflow road constitutes the backflow road, and this portion of first class and second portion of class are arranged at this first member.
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 member is provided with first abutment facing of this this breasting face relatively, this portion of first class is provided with second abutment facing of this breasting face relatively, this first abutment facing is connected formation one abutment facing mutually with second abutment facing, and this abutment facing is resisted against this breasting face.
6. tangent line external circulation type ball bolt as claimed in claim 4, it is characterized in that: this first member is provided with two foots.
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 true CN103244628A (en) | 2013-08-14 |
| CN103244628B 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) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909745A (en) * | 2016-06-13 | 2016-08-31 | 宁波海迈克精密机械制造有限公司 | Ball screw pair |
| CN113028016A (en) * | 2019-12-24 | 2021-06-25 | 银泰科技股份有限公司 | External circulation ball screw with return pipe structure |
Citations (5)
| 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 |
| JP2007303590A (en) * | 2006-05-12 | 2007-11-22 | Nsk Ltd | Ball screw |
| CN101182875A (en) * | 2006-11-13 | 2008-05-21 | 上银科技股份有限公司 | Roller screw rod system |
| US20100170359A1 (en) * | 2009-01-06 | 2010-07-08 | Hiwin Technologies Corp. | Ball return device for ball screw device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009097532A (en) | 2007-10-12 | 2009-05-07 | Shangyin Sci & Technol Co Ltd | Externally circulating ball screw |
-
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 (5)
| 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 |
| JP2007303590A (en) * | 2006-05-12 | 2007-11-22 | Nsk Ltd | Ball screw |
| CN101182875A (en) * | 2006-11-13 | 2008-05-21 | 上银科技股份有限公司 | Roller screw rod system |
| US20100170359A1 (en) * | 2009-01-06 | 2010-07-08 | Hiwin Technologies Corp. | Ball return device for ball screw device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909745A (en) * | 2016-06-13 | 2016-08-31 | 宁波海迈克精密机械制造有限公司 | Ball screw pair |
| 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, |
| CN113028016A (en) * | 2019-12-24 | 2021-06-25 | 银泰科技股份有限公司 | External circulation ball screw with return pipe structure |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101273802B1 (en) | 2013-06-11 |
| CN103244628B (en) | 2015-12-09 |
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