CN103047384B - Dustproof assembly of ball screw - Google Patents
Dustproof assembly of ball screw Download PDFInfo
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- CN103047384B CN103047384B CN201110310276.6A CN201110310276A CN103047384B CN 103047384 B CN103047384 B CN 103047384B CN 201110310276 A CN201110310276 A CN 201110310276A CN 103047384 B CN103047384 B CN 103047384B
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- preventing component
- dust preventing
- dust
- screw thread
- ball screw
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Abstract
A dustproof assembly of a ball screw is arranged on the ball screw and is provided with a through hole. A dustproof lip portion matched with a first threaded groove protrudes at the inner edge of the through hole. The dustproof lip portion is provided with an axial first end and an axial second end which respectively form a first dustproof surface and a second dustproof surface, the first dustproof surface and a second dustproof surface are reversely arranged, and a first gap is arranged between the first dustproof surface and the first threaded groove and is in gradual shrinking distribution from the first end to the second end. A second gap is arranged between the second dustproof surface and the first threaded groove and is in gradual expanding distribution from the first end to the second end. Therefore, the dustproof assembly of the ball screw is simple in structure and easy to manufacture, and can improve the assembling efficiency of screws and nuts.
Description
Technical field
The present invention is relevant with dust preventing component, refers to a kind of dust preventing component of ball screw especially.
Background technique
Press, traditional ball screw, there is a screw rod and a nut.This screw rod outer surface has one first screw thread ditch.This nut internal surface then has the one second screw thread ditch corresponding with this first screw thread ditch, and this second screw thread ditch and this first screw thread ditch form a thread path jointly.Plural number rolling element, is restricted to and rolls in this thread path.By those rolling elements and between this screw rod and this nut in the mode of point cantact, reduce the frictional force between this screw rod and this nut, run on this screw rod in order to this nut.
Because ball screw is in various machine during driver part, often run on this screw rod and stick together the situation such as foreign matter or dust, if do not removed, but allow this nut and those rolling elements directly together with foreign matter or dust this motion relatively, probably can make shorten the working life of this screw rod, this nut and those rolling elements, and operationally also very not smooth and easy.To this, can be used in time getting rid of the foreign matter of position on screw rod and dust just like No. US5722294th, the U.S. and US6931955 patent, maintain the start of ball screw smooth and easy and working life.
Only, above-mentioned U.S. US5722294 patent is that scraping brushing device is divided into two sections, and must the keyway of shaping combination in advance and key portion, this kind of scraping brushing device complex process and assembling convenience and validity enjoy test.Moreover be U.S. US6931955 patent, it uses the scraping brushing device of multistage and different scraping brushing devices adopts different materials to make each other, and this also produces suitable difficulty in making and assembling.
Summary of the invention
Main purpose of the present invention is the dust preventing component providing a kind of ball screw, and it is making simple and is assembling facility, therefore can increase the packaging efficiency of threaded spindle cap nut.
For achieving the above object, the dust preventing component of ball screw provided by the invention, for a ball screw, this ball screw has a screw rod and a nut, this screw rod outer surface has one first screw thread ditch, and this nut internal surface has the one second screw thread ditch corresponding with this first screw thread ditch, and this second screw thread ditch and this first screw thread ditch form a thread path jointly, plural number rolling element, is restricted to and rolls in this thread path; This dust preventing component is located on this nut, it is characterized in that:
This dust preventing component has the through hole worn for this screw rod, and coordinate this first screw thread ditch to give prominence to a dirt lip in this through hole inner edge, this dirt lip has a first end in axis and one second end, this first end and this second end form one first dust-proof and one second dust-proof of opposing setting separately from each other, between this first dust-proof and this first screw thread ditch, there is one first gap, and this first gap is tapered profile by this first end to the second end; Between this second dust-proof and this first screw thread ditch, there is one second gap, and this second gap is that flaring distributes by this first end to the second end.
The dust preventing component of described ball screw, wherein: this nut forms a location indentations and a pair tooth recess at end face; This dust preventing component then coordinates this location indentations and this to form a positioning convex portion and a pair tooth protuberance to tooth recess in its outer rim respectively, to be combined by this positioning convex portion and this location indentations and this combines tooth recess tooth protuberance and this, limit the relative position of this dust preventing component and this nut.
The dust preventing component of described ball screw, wherein: this dust preventing component makes with ejection formation.
The dust preventing component of described ball screw, wherein: this dust preventing component penetrates shaping making to turn.
The dust preventing component of described ball screw, wherein: between this dust preventing component and this nut, be provided with a packing ring.
The dust preventing component of described ball screw, wherein: the end face of this Dustproof accessory has a teething point, in order to contrast the first screw thread ditch of this screw rod.
Dust preventing component structure of the present invention makes merely simply, and because this first gap between this first dust-proof and this first screw thread ditch is in tapered profile, therefore in assembling, there is higher assembling nargin, thus, dust preventing component provided by the present invention makes simple and assembling is convenient, can increase the packaging efficiency of threaded spindle cap nut.
Accompanying drawing explanation
Fig. 1 is the exploded view of present pre-ferred embodiments;
Fig. 2 is the sectional view of present pre-ferred embodiments;
Fig. 3 is the dust preventing component plan view of present pre-ferred embodiments;
Fig. 4 is the dust preventing component stereogram of present pre-ferred embodiments;
Fig. 5 is the dust preventing component sectional view of present pre-ferred embodiments;
Fig. 6 is the phantom of present pre-ferred embodiments, display screw rod and dust preventing component;
Fig. 7 is the partial enlarged drawing in Fig. 6, display screw rod and dust preventing component
Fig. 8 is the phantom of present pre-ferred embodiments, display screw rod and dust preventing component; And
Fig. 9 is the partial enlarged drawing in Fig. 8, display screw rod and dust preventing component.
Primary clustering symbol description in accompanying drawing:
10 dust preventing component;
11 through holes;
12 dirt lip; 121 first ends; 122 second ends; 123 first dust-proof; 124 second dust-proof;
13 positioning convex portion;
14 pairs of tooth protuberances;
15 packing rings;
16 teething points;
80 ball screws; 81 screw rods; 811 first screw thread ditches;
82 nuts; 821 second screw thread ditches;
83 thread path;
84 rolling elements;
852 location indentations; 853 pairs of tooth recesses;
D1 first gap; D2 second gap.
Embodiment
The dust preventing component of a kind of ball screw provided by the present invention, for a ball screw, this ball screw has a screw rod and a nut, this screw rod, outer surface has one first screw thread ditch, this nut, internal surface has the one second screw thread ditch corresponding with this first screw thread ditch, and this second screw thread ditch and this first screw thread ditch form a thread path, plural rolling element jointly, are restricted to and roll in this thread path; This dust preventing component, be provided on this nut, it is characterized in that: this dust preventing component has the through hole worn for this screw rod, and coordinate this first screw thread ditch to give prominence to a dirt lip in this through hole inner edge, this dirt lip has a first end in axis and one second end, this first end and this second end form one first dust-proof and one second dust-proof of opposing setting separately from each other, between this first dust-proof and this first screw thread ditch, there is one first gap, and this first gap is tapered profile by this first end to the second end system; Between this second dust-proof and this first screw thread ditch, there is one second gap, and this second gap is that flaring distributes by this first end to the second end system.
In order to describe technical characterstic place of the present invention in detail, hereby lift a following preferred embodiment and coordinate accompanying drawing illustrate as after, wherein:
As shown in Fig. 1-Fig. 7, the dust preventing component 10 of a kind of ball screw that present pre-ferred embodiments provides, for a ball screw 80, this ball screw 80 has screw rod 81 and a nut 82, this screw rod 81 outer surface has one first screw thread ditch 811, this nut 82 internal surface has the one second screw thread ditch 821 corresponding with this first screw thread ditch 811, and this second screw thread ditch 821 forms a thread path 83 jointly with this first screw thread ditch 811, plural rolling element 84 is restricted to and rolls in this thread path 83.
This dust preventing component 10, be provided on this nut 82, it is characterized in that: this dust preventing component 10 has the through hole 11 worn for this screw rod 81, and the outstanding dirt lip 12 of this first screw thread ditch 811 is coordinated in this through hole 11 inner edge, this dirt lip 12 has first end 121 and one second end 122 in axis, this first end 121 and this second end 122 form one first dust-proof face 123 and one second dust-proof face 124 of opposing setting separately from each other, between this first dust-proof face 123 and this first screw thread ditch 811, there is one first clearance D 1, and this first clearance D 1 is tapered profile by this first end 121 to the second end 122, between this second dust-proof face 124 and this first screw thread ditch 811, there is one second clearance D 2, and this second clearance D 2 is distributed in flaring by this first end 121 to the second end 122.
It is worth mentioning that, in this preferred embodiment, this nut 82 forms a location indentations 852 and a pair tooth recess 853 at end face.This dust preventing component 10 coordinates this location indentations 852 to form a positioning convex portion 13 and a pair tooth protuberance 14 with this to tooth recess 853 in its outer rim respectively, to be combined by this positioning convex portion 13 and this location indentations 852 and this combines tooth recess 853 tooth protuberance 14 and this, limit the relative position of this dust preventing component 10 and this nut 82, in this dust preventing component 10 of assembling, only need this convex 13 and this to be located at this location indentations 852 respectively to tooth protuberance 14 and this is in tooth recess 853, this dust preventing component 10 device can be completed, need not aim at separately and correct.
About the production method of this dust preventing component 10, then according to the selection of user, this dust preventing component 10 can be penetrated shaping making with ejection formation making or this dust preventing component to turn.
For adjusting the position between this dust preventing component 10 and nut 85, between this dust preventing component 10 and this nut 85, being provided with a packing ring 15, adjusting the position between this dust preventing component 10 and nut 85 by the thickness changing this packing ring 15.
What also should be specified is, in this preferred embodiment, to predict the teething position of the first screw thread ditch 811 in this through hole 11 of this screw rod 81, this this dust preventing component 10 also can allow the end face of this dust preventing component 10 have a teething point 16, in order to contrast the first screw thread ditch 811 of this screw rod 81.
Thus, this dust preventing component 10 structure makes merely simply, and because this first clearance D 1 between this first dust-proof face 123 and this first screw thread ditch 811 is in tapered profile, therefore there is higher assembling nargin in assembling and ease of assembly, thus, dust preventing component 10 provided by the present invention makes simple and assembling is convenient, can increase the packaging efficiency of threaded spindle cap nut.
Claims (6)
1. the dust preventing component of a ball screw, for a ball screw, this ball screw has a screw rod and a nut, this screw rod outer surface has one first screw thread ditch, this nut internal surface has the one second screw thread ditch corresponding with this first screw thread ditch, and this second screw thread ditch and this first screw thread ditch form a thread path, plural rolling element jointly, are restricted to and roll in this thread path; This dust preventing component is located on this nut, it is characterized in that:
This dust preventing component has the through hole worn for this screw rod, and coordinate this first screw thread ditch to give prominence to a dirt lip in this through hole inner edge, this dirt lip has a first end in axis and one second end, this first end and this second end form one first dust-proof and one second dust-proof of opposing setting separately from each other, between this first dust-proof and this first screw thread ditch, there is one first gap, and this first gap is tapered profile by this first end to the second end; Between this second dust-proof and this first screw thread ditch, there is one second gap, and this second gap is that flaring distributes by this first end to the second end.
2. the dust preventing component of ball screw according to claim 1, wherein: this nut forms a location indentations and a pair tooth recess at end face; This dust preventing component then coordinates this location indentations and this to form a positioning convex portion and a pair tooth protuberance to tooth recess in its outer rim respectively, to be combined by this positioning convex portion and this location indentations and this combines tooth recess tooth protuberance and this, limit the relative position of this dust preventing component and this nut.
3. the dust preventing component of ball screw according to claim 1, wherein: this dust preventing component makes with ejection formation.
4. the dust preventing component of ball screw according to claim 1, wherein: this dust preventing component penetrates shaping making to turn.
5. the dust preventing component of ball screw according to claim 1, wherein: between this dust preventing component and this nut, be provided with a packing ring.
6. the dust preventing component of ball screw according to claim 1, wherein: the end face of this dust preventing component has a teething point, in order to contrast the first screw thread ditch of this screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110310276.6A CN103047384B (en) | 2011-10-14 | 2011-10-14 | Dustproof assembly of ball screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110310276.6A CN103047384B (en) | 2011-10-14 | 2011-10-14 | Dustproof assembly of ball screw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103047384A CN103047384A (en) | 2013-04-17 |
| CN103047384B true CN103047384B (en) | 2015-07-15 |
Family
ID=48060152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110310276.6A Active CN103047384B (en) | 2011-10-14 | 2011-10-14 | Dustproof assembly of ball screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103047384B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109268463B (en) * | 2017-07-18 | 2020-07-17 | 上银科技股份有限公司 | Ball screw with dustproof element |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101025223A (en) * | 2006-02-24 | 2007-08-29 | 上银科技股份有限公司 | Positioning dust-proof mechanism of ball screw-bar return-flow assembly |
| CN101230903A (en) * | 2007-01-23 | 2008-07-30 | 上银科技股份有限公司 | Ball screw anti-dust device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080196523A1 (en) * | 2007-02-16 | 2008-08-21 | Chia-Min Liu | Dustproof Device for a Ball Screw |
| JP4834067B2 (en) * | 2008-12-26 | 2011-12-07 | 上銀科技股▲分▼有限公司 | Ball screw |
| US8096201B2 (en) * | 2009-05-14 | 2012-01-17 | Hiwin Technologies Corp. | Dustproof device for ball screw apparatus |
-
2011
- 2011-10-14 CN CN201110310276.6A patent/CN103047384B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101025223A (en) * | 2006-02-24 | 2007-08-29 | 上银科技股份有限公司 | Positioning dust-proof mechanism of ball screw-bar return-flow assembly |
| CN101230903A (en) * | 2007-01-23 | 2008-07-30 | 上银科技股份有限公司 | Ball screw anti-dust device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103047384A (en) | 2013-04-17 |
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