CN108006183A - A kind of ball-screw circulated on axis - Google Patents
A kind of ball-screw circulated on axis Download PDFInfo
- Publication number
- CN108006183A CN108006183A CN201711466873.1A CN201711466873A CN108006183A CN 108006183 A CN108006183 A CN 108006183A CN 201711466873 A CN201711466873 A CN 201711466873A CN 108006183 A CN108006183 A CN 108006183A
- Authority
- CN
- China
- Prior art keywords
- ball
- screw
- recirculation device
- circulated
- lead screw
- Prior art date
- 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.)
- Pending
Links
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
-
- 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
-
- 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
- F16H25/2214—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls with elements for guiding the circulating balls
- F16H25/2228—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls with elements for guiding the circulating balls the device for circulation forming a part of the screw member
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses the ball-screw circulated on a kind of axis, ball-recirculation device is directly positioned in the lead screw shaft of ball-screw.This programme realizes that by innovative change circulation on feed screw nut of the endless form of the ball in ball-screw be to be circulated in lead screw shaft, so that the outer diameter of ball-screw nut be can be made smaller, and reduce the requirement to client's installation space；So that the cyclic curve of ball is reasonable, and ball-recirculation device is not in the risk to drop；Furthermore cause the integrated level higher of ball-screw and other components such as bearing, further reduce the requirement to client's installation space.
Description
Technical field
The present invention relates to leading screw technology, and in particular to ball-screw technology.
Background technology
Ball-screw is that rotary motion is converted into linear motion, or by transform linear motion is the preferable of rotary motion
Product.
Ball-screw is actuated element most-often used on machine tool and precision optical machinery, its major function is to transport rotation
Turn changes linear movement into, or moment of torsion is converted into axial repeated action power, while has high accuracy, invertibity and efficient concurrently
Feature.Due to the frictional resistance with very little, ball-screw is widely used in various industrial equipments and precision instrument.
The predominantly interior circulation of its endless form of existing ball-screw, conduit outer circulation, end cover type follow outer shroud and end plug type
Outer circulation etc. is several, and device is significantly characterized in that no matter how how endless form changes, and changes ten thousand times without leaving the original aim or stand, is all done on feed screw nut
The design of loop structure.
The existing medium and small ball-screw more demanding to outer diameter generally uses inner circulation structure, its structure is as schemed
1, mainly include：A piece lead screw shaft (1), several ball-recirculation devices (2), multiple balls (3), feed screw nut (4) etc., circulation
Portion is mainly made of ball-recirculation device (2), ball (3), feed screw nut (4), and ball (3) is in feed screw nut (4) along channel groove
Roll, one returns round robin start bit along ball-recirculation device (2) after circulation terminates.At the same time in the skill of interior Cyclic Rings ball-screw
In art evolution, all always using the scheme being placed in ball-recirculation device in feed screw nut.
And the interior circulation ball-screw shown in Fig. 1, its actual use process always there are it is following the problem of：
First, ball-screw radial dimension can not accomplish minimum.Ball (3) be feed screw nut (4) and lead screw shaft (1) it
Between rolling movement, it realizes the movement to move in circles by ball-recirculation device (2), and ball (3) is from lead screw shaft (1)
It is the side shaft shoulder needed along lead screw shaft (1) when one channel groove is turned back to another channel groove by ball-recirculation device (2)
Up crawl into ball-recirculation device (2), down moved along the opposite side shaft shoulder.Suffer from this, existing inner circulation structure
Ball-screw can not accomplish minimum dimension in radial directions, and stringenter occasion is required ball-screw radial dimension some
It is inapplicable.
Second, need the groove of processing ball-recirculation device (2) installation on feed screw nut (4) outside diameter, jagged influence appearance,
And other accessories, such as bearing, belt wheel can not be integrated or installed on feed screw nut outside diameter.It is now right with the development of technology
Higher and higher in the requirement of the Highgrade integration of parts, in many occasions, ball-screw is required in ball using client
Bearing arrangement or installation drive pulley, gear etc. are directly integrated on feed screw nut outside diameter.And existing inner circulation structure, because needing
Ball-recirculation device (2) to be installed on nut outside diameter, so being not to be suitable for requiring parts integrated level high occasion.
3rd, feed screw nut (4) is not easy to observe and detect in process.Ball-recirculation device as can be seen from Figure 1
(2) groove of installation directly processes on feed screw nut (4) outer surface, this groove is interior with feed screw nut (4)
Channel groove have phase relation requirement.And because channel groove including, ball-recirculation device (2) installation groove outside, both
It is the position relationship being not easy in directly observation processing, is also very difficult to accurately confirm phase relation in follow-up detection
Accuracy.
4th, fixed structure of the ball-recirculation device (2) on feed screw nut (4) is more complicated.The rolling of some inner circulation structures
Its ball-recirculation device (2) of ballscrew is fixed on feed screw nut (4) outside diameter, except need to be in feed screw nut (4) outside diameter
Outside the groove of upper processing ball-recirculation device (2) installation, also need to process the part and screw thread of fixed ball-recirculation device (2)
Hole, has more a kind of part and processing is also more complicated.In addition, the ball-recirculation device (2) of certain structures is to be directly installed on leading screw spiral shell
On female (4) outside diameter, only fixed by filler, there is the risk to be dropped by ball (3) impact.
5th, ball (3) is cumbersome when fitting between lead screw shaft (1) and nut (4).Because interior circulation is individual pen one
Circulation, therefore ball (3) is one to enclose placement in assembling, discharges a circle and fixes a ball-recirculation device (2), such as circulating ring
Assembling is relatively complicated when number is more.
The content of the invention
For the problems of existing interior circulation ball-screw, it is necessary to a kind of new interior circulation ball-screw scheme.
For this reason, problem to be solved by this invention is to provide the ball-screw circulated on a kind of axis, to overcome the prior art
The defects of existing.
To solve the above-mentioned problems, the ball-screw circulated on axis provided by the invention, ball-recirculation device is directly disposed
In the lead screw shaft of ball-screw.
Further, placement groove is provided with the lead screw shaft of the ball-screw, installing ball-recirculation device makes ball
By ball-recirculation device in lead screw shaft cycle operation.
Further, the feed screw nut it is cylindrical on be provided directly with bearing inner race groove and belt wheel positioning spline.
Wound scheme provided by the invention is realized to be circulated in lead screw shaft, ball-recirculation curve more rationally, ball-recirculation device will not
In the presence of risk, processing and the assembling to drop be more preferable, raw material loss less, appearance and size is small, integrated levels and structural strength
It is high.
Brief description of the drawings
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
Fig. 1 is the structure diagram of existing interior circulation ball-screw；
Fig. 2 is the cut away view of the ball-screw circulated on present example axis.
Embodiment
In order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention easy to understand, tie below
Conjunction is specifically illustrating, and the present invention is further explained.
For inner circulation structure ball-screw, during its whole technology hair, all use ball-recirculation always
Device is placed in the scheme in feed screw nut.Then it will be apparent to those skilled in the art that based on inner circulation structure ball-screw
Technology development path, forms in inner circulation structure ball-screw scheme, ball-recirculation device needs to be placed in feed screw nut
Technology prejudice.
In the case, by forming the research of structure to existing inner circulation structure ball-screw, knot is circulated in reservation
In the case of structure ball-screw advantage, innovation to be mounted directly to ball-recirculation device in lead screw shaft, so that by ball-screw
The endless form of ball innovative circulation will be changed on feed screw nut to be circulated in lead screw shaft, so that ball-screw spiral shell
Female outer diameter be can be made smaller, and reduce the requirement to client's installation space；So that the cyclic curve of ball is reasonable, and
Ball-recirculation device is not in the risk to drop；Furthermore cause the integrated level higher of ball-screw and other components such as bearing, into
One step reduces the requirement to client's installation space.
Referring to Fig. 2 which shows the exemplary construction of the ball-screw circulated on the axis that this example is provided based on above-mentioned principle.
As seen from the figure, the ball-screw circulated on this axis mainly by lead screw shaft (11), feed screw nut (12), ball (13) with
And ball-recirculation device (14) coordinates composition.
This example is processing groove in the lead screw shaft of ball-screw (11), available for installation ball-recirculation device
(14)；And ball-recirculation device (14) is then directly mounted in the groove in lead screw shaft (11)；Ball (13) is followed by ball at the same time
Ring device (14) cycle operation in lead screw shaft (11), realizes moment of torsion being converted into axial repeated action power, at the same have concurrently high accuracy,
Inner circulation structure on the axis of invertibity and high efficiency feature.
For specific installation position of the ball-recirculation device (14) in lead screw shaft (11), can according to the actual requirements depending on, only
Guarantee to realize ball (13) by ball-recirculation device (14) cycle operation in lead screw shaft (11), realize and change moment of torsion
Into axial repeated action power.
On this basis, this example further upper directly processes bearing (15) inner ring groove feed screw nut (12) is cylindrical
And belt wheel positioning spline so that ball-screw and other integrated levels are high, and overall dimension is small, structural strength and can process
Property it is high.
It is recessed by being processed in the lead screw shaft of ball-screw (11) on the axis formed accordingly in circulation ball-screw scheme
Groove, to be mounted directly upper ball-recirculation device (14), makes ball (13) be circulated by ball-recirculation device (14) in lead screw shaft (11)
Operating；Upper bearing (15) inner ring groove and belt wheel positioning spline are directly processed feed screw nut (13) is cylindrical so that by moment of torsion
Axial repeated action power is converted into, realizes inner circulation structure on the axis for having high accuracy, invertibity and high efficiency feature concurrently at the same time；Make
The outer diameter for obtaining ball-screw nut (12) be can be made smaller, and reduce the requirement to client's installation space；So that ball
(13) cyclic curve is reasonable, and structural strength and machinability are high, and ball-recirculation device (14) is not in the risk to drop；
So that the integrated level higher of ball-screw and other components such as bearing (15), further reduces the requirement to client's installation space.
What this example provided realizes that the ball-screw scheme circulated on axis is placed in leading screw relative to existing ball-recirculation device
Inner circulation structure ball-screw in nut, has the following advantages that in actual use：
1st, ball-screw radial dimension can accomplish minimum, reduce processing raw material loss, save client's installation space.
2nd, do not have to processing groove on feed screw nut outside diameter, without notch, bearing can be integrated on nut outside diameter or is directly pacified
Drive pulley, gear are filled, component over all Integration degree is high, and installation dimension is small, the extremely suitable occasion stringenter to space requirement.
3rd, processing groove is not had on feed screw nut outside diameter, the groove of installation ball-recirculation device directly processes in lead screw shaft
Come, can easily observe in process, and the phase relation detection of follow-up channel groove and groove is also extremely convenient.
4th, ball-recirculation device is directly installed in lead screw shaft, is not in the risk that ball-recirculation device drops, it is not necessary to volume
Outer retaining element and fixing screwed hole, it is concise in technology, easy for installation.
5th, ball is easily and efficiently assembled between lead screw shaft and nut, and reduction installation time, reduction assembly work are strong
Degree, improves overall assembly work efficiency.
Basic principle, main feature and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (3)
1. the ball-screw circulated on axis, it is characterised in that ball-recirculation device is directly positioned in the lead screw shaft of ball-screw.
2. the ball-screw circulated on axis according to claim 1, it is characterised in that in the lead screw shaft of the ball-screw
Be provided with placement groove, install ball-recirculation device make ball by ball-recirculation device the cycle operation in lead screw shaft.
3. the ball-screw circulated on axis according to claim 1, it is characterised in that the feed screw nut is cylindrical direct
It is provided with bearing inner race groove and belt wheel positioning spline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711466873.1A CN108006183A (en) | 2017-12-28 | 2017-12-28 | A kind of ball-screw circulated on axis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711466873.1A CN108006183A (en) | 2017-12-28 | 2017-12-28 | A kind of ball-screw circulated on axis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108006183A true CN108006183A (en) | 2018-05-08 |
Family
ID=62048990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711466873.1A Pending CN108006183A (en) | 2017-12-28 | 2017-12-28 | A kind of ball-screw circulated on axis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108006183A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108930711A (en) * | 2018-09-19 | 2018-12-04 | 浙江雷尼摩申精密机械有限公司 | A kind of rolling bearing of high speed roller bearing screw pair |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101429999A (en) * | 2008-09-27 | 2009-05-13 | 南京工艺装备制造有限公司 | Ball screw pair with large lead inner circulation structure |
| CN101561033A (en) * | 2009-05-21 | 2009-10-21 | 南京工艺装备制造有限公司 | Ballscrew pair |
| CN105443661A (en) * | 2015-12-31 | 2016-03-30 | 刘国青 | Ball screw worm speed reducer |
| CN207961439U (en) * | 2017-12-28 | 2018-10-12 | 上海莱恩精密机床附件有限公司 | A kind of ball-screw recycled on axis |
-
2017
- 2017-12-28 CN CN201711466873.1A patent/CN108006183A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101429999A (en) * | 2008-09-27 | 2009-05-13 | 南京工艺装备制造有限公司 | Ball screw pair with large lead inner circulation structure |
| CN101561033A (en) * | 2009-05-21 | 2009-10-21 | 南京工艺装备制造有限公司 | Ballscrew pair |
| CN105443661A (en) * | 2015-12-31 | 2016-03-30 | 刘国青 | Ball screw worm speed reducer |
| CN207961439U (en) * | 2017-12-28 | 2018-10-12 | 上海莱恩精密机床附件有限公司 | A kind of ball-screw recycled on axis |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108930711A (en) * | 2018-09-19 | 2018-12-04 | 浙江雷尼摩申精密机械有限公司 | A kind of rolling bearing of high speed roller bearing screw pair |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180508 |
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| RJ01 | Rejection of invention patent application after publication |