CN207961439U - A kind of ball-screw recycled on axis - Google Patents
A kind of ball-screw recycled on axis Download PDFInfo
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- CN207961439U CN207961439U CN201721880261.2U CN201721880261U CN207961439U CN 207961439 U CN207961439 U CN 207961439U CN 201721880261 U CN201721880261 U CN 201721880261U CN 207961439 U CN207961439 U CN 207961439U
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- ball
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- recirculation device
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Abstract
The utility model discloses the ball-screws recycled on a kind of axis, and ball-recirculation device is directly positioned in the lead screw shaft of ball-screw.This programme realizes that by innovative change cycle on feed screw nut of the endless form of the ball in ball-screw be to be recycled in lead screw shaft, so that the outer diameter of ball-screw nut be can be made smaller, and the requirement to client's installation space is reduced；So that the cyclic curve of ball is reasonable, and there is no the risks fallen for ball-recirculation device；Furthermore the integrated level higher for making ball-screw and other components such as bearing, further decreases the requirement to client's installation space.
Description
Technical field
The utility model is related to leading screw technologies, and in particular to ball-screw technology.
Background technology
Ball-screw is to convert rotary motion to linear motion, or by transform linear motion is the ideal of rotary motion
Product.
Ball-screw is actuated element most-often used on machine tool and precision machinery, and major function is will to rotate fortune
Turn changes linear movement into, or torque is converted into axial repeated action power, while having both high-precision, invertibity and efficient
Feature.Due to the frictional resistance with very little, ball-screw is widely used in various industrial equipments and precision instrument.
The predominantly interior cycle 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, and structure is as schemed
1, include mainly：A piece lead screw shaft (1), several ball-recirculation devices (2), multiple balls (3), a feed screw nut (4) etc., cycle
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
It rolls, one returns round robin start bit along ball-recirculation device (2) after circulation terminates.Simultaneously 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 interior circulation ball-screw shown in FIG. 1, using process, there is always following problems actual：
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, the movement to move in circles is realized by ball-recirculation device (2), ball (3) is from the one of lead screw shaft (1)
When channel groove is turned back to another channel groove by ball-recirculation device (2), be need it is past along the side shaft shoulder of lead screw shaft (1)
On crawl into ball-recirculation device (2), moved down along the other side shaft shoulder.It is affected by this, the rolling of existing inner circulation structure
Ballscrew can not accomplish minimum dimension in radial directions, and stringenter occasion is required not to ball-screw radial dimension certain
It is applicable in.
Second, need the groove of processing ball-recirculation device (2) installation on feed screw nut (4) outer diameter, jagged influence appearance,
And other accessories, such as bearing, belt wheel can not be integrated or installed on feed screw nut outer diameter.With the development of technology, now right
Higher and higher in the requirement of the Highgrade integration of parts, in many occasions, ball-screw is required for using client in ball
Bearing arrangement or installation drive pulley, gear etc. are directly integrated on feed screw nut outer diameter.And existing inner circulation structure, because needing
Ball-recirculation device (2) to be installed on nut outer diameter, so being not to be suitable for requiring parts integrated level high occasion.
Third, feed screw nut (4) are not easy to observe in process and detect.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, the two
It is to be not easy to directly observe the position relationship in processing, is also very difficult to accurately confirm phase relation in subsequent detection
Accuracy.
4th, fixed structure of the ball-recirculation device (2) on feed screw nut (4) is more complex.The rolling of some inner circulation structures
Its ball-recirculation device (2) of ballscrew be carried out on feed screw nut (4) outer diameter it is fixed, in addition to need to be in feed screw nut (4) outer diameter
Except the groove of upper processing ball-recirculation device (2) installation, the part and screw thread of processing fixed ball-recirculation device (2) are also needed
Hole, has more a kind of part and processing is also more complex.In addition, the ball-recirculation device (2) of certain structures is to be directly installed on leading screw spiral shell
It on female (4) outer diameter, is only fixed by filler, exists and impacted the risk fallen by ball (3).
5th, ball (3) is cumbersome when fitting between lead screw shaft (1) and nut (4).Because interior cycle is individual pen one
Cycle, therefore ball (3) is one to enclose placement in assembly, discharges a circle and fixes a ball-recirculation device (2), such as circulating ring
Assembly is relatively complicated when number is more.
Utility model content
For the problems of existing interior circulation ball-screw, a kind of new interior circulation ball-screw scheme is needed.
For this purpose, problem to be solved in the utility model is to provide the ball-screw recycled on a kind of axis, it is existing to overcome
Defect present in technology.
To solve the above-mentioned problems, the ball-screw recycled on axis provided by the utility model, ball-recirculation device is direct
It is placed in the lead screw shaft of ball-screw.
Further, it is provided with placement groove in 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, bearing inner race groove and belt wheel positioning spline are provided directly in the feed screw nut outer circle.
Wound scheme provided by the utility model is realized to be recycled in lead screw shaft, ball-recirculation curve more rationally, ball-recirculation device
There is no the risk fallen, processing and assembling be more preferable, raw material loss less, appearance and size is small, integrated levels and structure
Intensity is high.
Description of the drawings
The utility model is further illustrated below in conjunction with the drawings and specific embodiments.
Fig. 1 is the structural schematic diagram of existing interior circulation ball-screw；
Fig. 2 is the cut away view of the ball-screw recycled on the example of the utility model axis.
Specific implementation mode
In order to make the technical means, creative features, achievement of purpose, and effectiveness of the utility model be easy to understand, under
Face combines and is specifically illustrating, and the utility model is expanded on further.
For inner circulation structure ball-screw, during its entire technology is sent out, 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, and ball-recirculation device needs to be placed in feed screw nut
Technology prejudice.
In the case, by the research to existing inner circulation structure ball-screw composed structure, knot is recycled in reservation
In the case of structure ball-screw advantage, ball-recirculation device is mounted directly in lead screw shaft by innovation, thus will be in ball-screw
Ball endless form it is innovative will cycle be changed on feed screw nut is to be recycled in lead screw shaft, so that ball-screw spiral shell
Female outer diameter be can be made smaller, and the requirement to client's installation space is reduced；So that the cyclic curve of ball is reasonable, and
There is no the risks fallen for ball-recirculation device；Furthermore the integrated level higher for making 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 recycled on the axis that this example is provided based on above-mentioned principle.
As seen from the figure, the ball-screw recycled on this axis mainly by lead screw shaft (11), feed screw nut (12), ball (13) with
And ball-recirculation device (14) cooperation is constituted.
This example is processing groove in the lead screw shaft of ball-screw (11), can be used for installing 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 simultaneously
Ring device (14) cycle operation in lead screw shaft (11) realizes torque being converted into axial repeated action power, at the same have both high-precision,
Inner circulation structure on the axis of invertibity and high efficiency feature.
It, can be depending on actual demand, only for specific installation position of the ball-recirculation device (14) in lead screw shaft (11)
Guarantee to realize that torque is converted in the cycle operation in lead screw shaft (11), realization to ball (13) by ball-recirculation device (14)
At axial repeated action power.
On this basis, this example further directly processes bearing (15) inner ring groove in feed screw nut (12) outer circle
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 constituted accordingly in circulation ball-screw scheme
Slot makes ball (13) be recycled in lead screw shaft (11) by ball-recirculation device (14) to be mounted directly upper ball-recirculation device (14)
Operating；Bearing (15) inner ring groove and belt wheel positioning spline are directly processed in feed screw nut (13) outer circle so that by torque
Be converted into axial repeated action power, realize have both simultaneously in high precision, inner circulation structure on the axis of invertibity and high efficiency feature；Make
The outer diameter for obtaining ball-screw nut (12) be can be made smaller, and the requirement to client's installation space is reduced；Make ball
(13) cyclic curve is reasonable, and structural strength and machinability are high, and there is no the risks fallen for ball-recirculation device (14)；
So that the integrated level higher of ball-screw and other components such as bearing (15), further decreases the requirement to client's installation space.
The ball-screw scheme recycled on the realization axis that this example provides 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：
1, ball-screw radial dimension can accomplish minimum, reduce processing raw material loss, save client's installation space.
2, do not have to processing groove on feed screw nut outer diameter, without notch, bearing can be integrated on nut outer 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.
3, processing groove is not had on feed screw nut outer 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.
4, ball-recirculation device is directly installed in lead screw shaft, and there is no the risks that ball-recirculation device is fallen, and do not need volume
Outer retaining element and fixing screwed hole, it is concise in technology, easy for installation.
5, ball is easily and efficiently assembled between lead screw shaft and nut, and reduction assembly time, reduction assembly work are strong
Degree improves whole assembly work efficiency.
Basic principles, main features, and advantages of the present invention has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the present utility model is not limited to the above embodiments, described in above embodiments and description
Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (3)
1. the ball-screw recycled on axis, which is characterized in that ball-recirculation device to be directly positioned in the lead screw shaft of ball-screw.
2. the ball-screw recycled on axis according to claim 1, which is characterized in that in the lead screw shaft of the ball-screw
It is provided with placement groove, installing ball-recirculation device makes ball pass through ball-recirculation device cycle operation in lead screw shaft.
3. the ball-screw recycled on axis according to claim 1, which is characterized in that the leading screw spiral shell in the ball-screw
Bearing inner race groove and belt wheel positioning spline are provided directly in female outer circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721880261.2U CN207961439U (en) | 2017-12-28 | 2017-12-28 | A kind of ball-screw recycled on axis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721880261.2U CN207961439U (en) | 2017-12-28 | 2017-12-28 | A kind of ball-screw recycled on axis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207961439U true CN207961439U (en) | 2018-10-12 |
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ID=63730695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721880261.2U Active CN207961439U (en) | 2017-12-28 | 2017-12-28 | A kind of ball-screw recycled on axis |
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| Country | Link |
|---|---|
| CN (1) | CN207961439U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108006183A (en) * | 2017-12-28 | 2018-05-08 | 上海莱恩精密机床附件有限公司 | A kind of ball-screw circulated on axis |
-
2017
- 2017-12-28 CN CN201721880261.2U patent/CN207961439U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108006183A (en) * | 2017-12-28 | 2018-05-08 | 上海莱恩精密机床附件有限公司 | A kind of ball-screw circulated on axis |
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