CN106402309A - Solid-lubricated ball screw - Google Patents
Solid-lubricated ball screw Download PDFInfo
- Publication number
- CN106402309A CN106402309A CN201610989368.4A CN201610989368A CN106402309A CN 106402309 A CN106402309 A CN 106402309A CN 201610989368 A CN201610989368 A CN 201610989368A CN 106402309 A CN106402309 A CN 106402309A
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- China
- Prior art keywords
- ball
- ball screw
- graphite
- solid lubrication
- micron graphite
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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
-
- 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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a solid-lubricated ball screw which is majorly composed of a screw body, a nut, balls, a fixing base, a scraper and a return tube. The surfaces of the ball are provided with plasma-sprayed Ni-coated micron graphite and grapheme coatings which are 20-30 [mu]m. By adoption of the composite cladding layers, the friction coefficient and the abrasion rate are lowered simultaneously, the friction coefficient is low, and meanwhile, the abrasion resistance is more excellent than that of a Cr-cladding layer. The abrasion rate is lowered by 50% or over compared with a base body under all load conditions.
Description
Technical field
The present invention relates to technical field of automobile, more particularly, to a kind of ball screw of solid lubrication and its preparation side
Method.
Background technology
Ball screw (Ballscrew), another name ball screw rod, driving screw, are that a kind of steel ball does between nut and screw rod
Motion, the sliding contact of classic screw is converted into being in rolling contact and then again the steel ball gyration in nut is switched to straight line fortune
Dynamic gearing assembly.Ball screw have positioning precision height, high life, low stain and can do at a high speed just reverse transmission and
The characteristics such as conversion transmission, because having above-mentioned characteristic, ball screw has become determining of accurate scientific and technological industry and precision optical machinery industry recently
One of important spare part on position and measuring system.
Ball screw is mainly what screw rod, nut, steel ball, fixed seat, scraping brushing device and return duct were constituted, according to its cyclic system
The difference of system is more divided into the circulating ball screw of outer circulation type, internal-circulation type, end plug.
The structure tradition of ball screw be divided into inner circulation structure (with circular reverser and oval reverser as representative) and
Two kinds of outer circulation structure (with intubation as representative).Both structures are also the most frequently used structure.Both structural behaviours are not originally
Matter is distinguished, and simply inner circulation structure installation size for connection is little；It is big that outer circulation structure installs size for connection.At present, ball screw assembly,
The existing kind more than 10 of structure, but the more commonly used mainly having：Inner circulation structure；Outer circulation structure；End cover structure；Covering plate structure..
Content of the invention
It is an object of the invention to proposing a kind of ball screw of solid lubrication and preparation method thereof, enable to ball spiral shell
Bar friction reduces.
For reaching this purpose, the present invention employs the following technical solutions：
A kind of ball screw of solid lubrication, it is mainly screw rod, nut, ball, fixed seat, scraping brushing device and return duct institute
Constitute, described ball surface there are plasma spraying Ni cladding micron graphite and the graphite ene coatings of 20-30 μ m thick.
Coating of the present invention is that Ni cladding micron graphite is mixed with graphite ene coatings.Preferably, described weight ratio
For (3-5):1, preferably 4:1.
Described mixing is using planetary ball mill and centrifugal spraying granulator, coating to be dusted.Its technique includes：
(1) by Ni cladding micron graphite granule and Graphene ball milling at least 5 minutes on planetary ball mill；
(2), when ball milling stops first 5 minutes, add organic binder ball milling, obtain suspension；
(3) suspension is carried out mist projection granulating, obtain Ni cladding micron graphite and Graphene agglomerated particle.
Ni is coated micron graphite by plasma spraying and is sprayed on ball with Graphene agglomerated particle by the present invention.Described
Plasma spraying, its electric current is 400-700A, and voltage is 30-70V, main gas argon flow amount 50-140L/min, powder feed rate 25-
60g/min.Preferably, electric current is 550A, voltage 30V, argon flow amount 50L/min.
Ni of the present invention coats micron graphite granule, is existing product, those skilled in the art can pass through market
It is commercially available it is also possible to prepare according to the method for prior art.The present invention no longer limits with regard to it.
The coating of the present invention, in process of friction and wear, graphite constantly separates out from nickel bag graphite granule, in tangential masterpiece
Use lower flowing, the effect of filling and leading up can be played to ditch dug with a plow, thus the wearability of main shaft can be improved.And the Graphene adding, more suitable
Sliding, it is attached to main shaft surface, reduce its frictional resistance.
The composite coating thickness of the present invention is about 20-30 μm, and its hardness significantly improves, more than 500HV compared with matrix0.2.With
When, composite coating adds Graphene crystal grain refined, average grain size drops to 20nm.
The composite coating of the present invention makes coefficient of friction and wear rate reduce simultaneously, has relatively low coefficient of friction, each
Under individual load, wear rate reduces by more than 50% than matrix.
Specific embodiment
To further illustrate technical scheme below by specific embodiment.
Embodiment 1
Using planetary ball mill and centrifugal spraying granulator, coating material is dusted.Its technique includes：
(1) by Ni cladding micron graphite granule and Graphene ball milling at least 5 minutes on planetary ball mill；
(2), when ball milling stops first 5 minutes, add organic binder ball milling, obtain suspension；
(3) suspension is carried out mist projection granulating, obtain Ni cladding micron graphite and Graphene agglomerated particle.
By plasma spraying, described Ni is coated micron graphite to spray on ball surface with Graphene agglomerated particle.Institute
State plasma spraying, its electric current is 550A, voltage 30V, argon flow amount 50L/min.
Coating on described ball, it plays self-lubricating solid effect.
By screw rod, nut, ball, fixed seat, scraping brushing device and the constituted solid lubrication of return duct ball screw.
Comparative example 1
Omit the Graphene of embodiment 1, remaining is same as Example 1.
Comparative example 2
Ni cladding micron graphite is replaced with micron graphite, remaining is same as Example 1.
The coating of comparative example 1-2, equally can play lubrication, but described lubricant effect is slightly worse, simply compared to not containing
The ball of coating, improves.The lubricant effect of embodiment 1 will be substantially better than comparative example 1-2, and wear time is long, plays profit
The sliding time is also significantly longer.That is, 2 kinds of material mixing of the present invention, play synergism.
Claims (5)
1. a kind of ball screw of solid lubrication, it is mainly screw rod, nut, ball, fixed seat, scraping brushing device and return duct institute structure
Become, described ball surface has plasma spraying Ni cladding micron graphite and the graphite ene coatings of 20-30 μ m thick.
2. the ball screw of solid lubrication as claimed in claim 1 is it is characterised in that described coating is Ni cladding micron graphite
Mix with graphite ene coatings, its weight ratio is (3-5):1, preferably 4:1.
3. the ball screw of solid lubrication as claimed in claim 1 or 2 is it is characterised in that described mixing is using planet ball
Coating is dusted by grinding machine and centrifugal spraying granulator, and its technique includes：
(1) by Ni cladding micron graphite granule and Graphene ball milling at least 5 minutes on planetary ball mill；
(2), when ball milling stops first 5 minutes, add organic binder ball milling, obtain suspension；
(3) suspension is carried out mist projection granulating, obtain Ni cladding micron graphite and Graphene agglomerated particle.
4. the ball screw of the solid lubrication as described in one of claim 1-3 is it is characterised in that by plasma spraying by institute
State Ni cladding micron graphite and spray to Graphene agglomerated particle and described coating is obtained on blower fan main shaft.
5. the ball screw of the solid lubrication as described in one of claim 1-4 is it is characterised in that described plasma spraying, its
Electric current is 400-700A, and voltage is 30-70V, main gas argon flow amount 50-140L/min, powder feed rate 25-60g/min；Preferably
, electric current is 550A, voltage 30V, argon flow amount 50L/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610989368.4A CN106402309A (en) | 2016-11-10 | 2016-11-10 | Solid-lubricated ball screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610989368.4A CN106402309A (en) | 2016-11-10 | 2016-11-10 | Solid-lubricated ball screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106402309A true CN106402309A (en) | 2017-02-15 |
Family
ID=59230388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610989368.4A Pending CN106402309A (en) | 2016-11-10 | 2016-11-10 | Solid-lubricated ball screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106402309A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591394A (en) * | 2018-04-22 | 2018-09-28 | 北京工业大学 | A kind of high-speed ball screw pair thermal deformation suppressing method based on graphene heat radiation coating |
Citations (8)
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|---|---|---|---|---|
| CN101634338A (en) * | 2009-07-30 | 2010-01-27 | 哈尔滨工业大学 | Method for preparing self-lubricating film on surface of roll ball |
| CN101724803A (en) * | 2008-10-16 | 2010-06-09 | 北京有色金属研究总院 | Preparation method of composite powder for high-temperature wear-resisting self-lubricating coating |
| CN102168239A (en) * | 2011-03-29 | 2011-08-31 | 北京矿冶研究总院 | Composite powder for abradable seal, coating and preparation method |
| EP2745738A1 (en) * | 2011-08-18 | 2014-06-25 | Segos Co., Ltd. | Rail |
| CN104846418A (en) * | 2015-04-10 | 2015-08-19 | 南京理工大学 | Preparation technology for dual-pulse electrodeposition based graphene/nickel based composite coating |
| CN104928611A (en) * | 2015-07-13 | 2015-09-23 | 中国人民解放军第二炮兵工程大学 | Wide temperature region viscosity corrosion resisting solid self-lubricating coating and preparation method thereof |
| WO2016055409A1 (en) * | 2014-10-08 | 2016-04-14 | The Swatch Group Research And Development Ltd | Self-lubricating composite coating |
| CN105543762A (en) * | 2015-12-28 | 2016-05-04 | 韩功篑 | High-strength environment-friendly wear-resistant coating for inner wall of internal combustion engine cylinder and preparation method of coating |
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2016
- 2016-11-10 CN CN201610989368.4A patent/CN106402309A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101724803A (en) * | 2008-10-16 | 2010-06-09 | 北京有色金属研究总院 | Preparation method of composite powder for high-temperature wear-resisting self-lubricating coating |
| CN101634338A (en) * | 2009-07-30 | 2010-01-27 | 哈尔滨工业大学 | Method for preparing self-lubricating film on surface of roll ball |
| CN102168239A (en) * | 2011-03-29 | 2011-08-31 | 北京矿冶研究总院 | Composite powder for abradable seal, coating and preparation method |
| EP2745738A1 (en) * | 2011-08-18 | 2014-06-25 | Segos Co., Ltd. | Rail |
| WO2016055409A1 (en) * | 2014-10-08 | 2016-04-14 | The Swatch Group Research And Development Ltd | Self-lubricating composite coating |
| CN104846418A (en) * | 2015-04-10 | 2015-08-19 | 南京理工大学 | Preparation technology for dual-pulse electrodeposition based graphene/nickel based composite coating |
| CN104928611A (en) * | 2015-07-13 | 2015-09-23 | 中国人民解放军第二炮兵工程大学 | Wide temperature region viscosity corrosion resisting solid self-lubricating coating and preparation method thereof |
| CN105543762A (en) * | 2015-12-28 | 2016-05-04 | 韩功篑 | High-strength environment-friendly wear-resistant coating for inner wall of internal combustion engine cylinder and preparation method of coating |
Non-Patent Citations (1)
| Title |
|---|
| 互动百科: "《互动百科》", 12 June 2016 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591394A (en) * | 2018-04-22 | 2018-09-28 | 北京工业大学 | A kind of high-speed ball screw pair thermal deformation suppressing method based on graphene heat radiation coating |
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| PB01 | Publication | ||
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Application publication date: 20170215 |