CN206280451U - Ball guide screw nat - Google Patents
Ball guide screw nat Download PDFInfo
- Publication number
- CN206280451U CN206280451U CN201621168104.4U CN201621168104U CN206280451U CN 206280451 U CN206280451 U CN 206280451U CN 201621168104 U CN201621168104 U CN 201621168104U CN 206280451 U CN206280451 U CN 206280451U
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- CN
- China
- Prior art keywords
- ball guide
- piezoelectric
- guide screw
- ball
- pad
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Abstract
The utility model discloses a kind of ball guide screw nat.Ball guide screw nat, including leading screw (1), ball (5), two nuts (3), two nuts (3) are screwed onto on leading screw (1), ball (5) is arranged between nut (3) and leading screw (1), and precompressed is provided with the piezoelectric pad (6) that thickness can be adjusted according to external voltage size and/or direction between two nuts (3).The utility model overcomes the shortcomings of adjustment of existing double nut pretension ball guide screw nat pretightning force is difficult, adjust pad difficulty of processing is big and the pretightning force of specific ball guide screw nat can not be changed according to the difference of operating mode, the ball guide screw nat uses double nut pretension and using piezoelectric as adjust pad, by the deformation for controlling the voltage difference at piezoelectric the two poles of the earth to control piezoelectric, so as to realize the regulation of ball guide screw nat pretightning force, its pretension for being primarily adapted for use in middle-size and small-size or miniature ultra-precision ball screw pair of nut.
Description
Technical field
The utility model belongs to the technical field of transmission device, and in particular to a kind of ball guide screw nat.
Background technology
Ball-screw and its nut are the drive disk assemblies of most engineering machinery, loaded onto on leading screw nut, ball with
And the fastener of correlation, seal are to constitute a ball guide screw nat.Ball guide screw nat can transport the rotation of leading screw
It is dynamic to be converted to straight reciprocating motion of the nut along leading screw axis direction.In the case where nut bears axial load, nut it is past
Can there is hysterisis error, i.e. nut and one section of air line distance is moved under the promotion of leading screw in linear motion, when leading screw reversion and band
When dynamic nut is returned, nut can not accurately return to initial position, can exist between home position and initial position one section it is small away from
From.To eliminate the hysterisis error of ball guide screw nat transmission and improving its dynamic characteristics, it usually needs to ball-screw nut
Pair carries out pretension, i.e., nut is remained close contact with leading screw or even produce small deformation by pretension, so as to eliminate
Gap between nut and leading screw, reaches that hysterisis error is reduced or eliminated, transmission accuracy is improved and strengthens ball-screw-transmission and moves
The purpose of force characteristic.And ball guide screw nat has various pre-tension methods, one of which is with double nut plus adjust pad
Firmly beforehand meanses carry out pretension to ball guide screw nat, and in this kind of firmly beforehand meanses, a leading screw is provided with two nuts, by
The mode that adjust pad is added between two nuts extrudes two nuts to leading screw two ends so that the gap between leading screw and nut becomes
It is zero, so no matter nut advances or returns, and the gap between nut and leading screw remains zero.But, rolling at present
Have that adjustment is difficult, adjust pad difficulty of processing is big, specific ball-screw spiral shell in the secondary double nut firmly beforehand meanses of screw nut
The shortcomings of female secondary pretightning force can not be changed.
Above-mentioned discussion content purpose is may be with the utility model being described below and/or advocate to reader's introduction
The related technology of various aspects various aspects, it is believed that the discussion content helps to be reader with background's information, with favourable
In more fully understanding various aspects of the present utility model, it is therefore to be understood that be that these discussions are read with this angle, rather than
Recognize prior art.
Utility model content
The purpose of this utility model is to overcome existing double nut pretension ball guide screw nat pretightning force adjustment difficulty, adjust
Whole pad difficulty of processing is big and pretightning force of specific ball guide screw nat can not be changed etc. according to the difference of operating mode
A kind of shortcoming, there is provided ball guide screw nat, the ball guide screw nat uses double nut pretension and using piezoelectric as tune
Whole pad, by the deformation for controlling the voltage difference at piezoelectric the two poles of the earth to control piezoelectric, so as to realize ball-screw nut
The regulation of secondary pretightning force.
The purpose of this utility model is achieved through the following technical solutions：
A kind of ball guide screw nat, including leading screw, ball, two nuts are provided, described two nuts are screwed onto leading screw
On, the ball is arranged between nut and leading screw, and be provided with can be according to external voltage size for precompressed between described two nuts
And/or direction adjusts the piezoelectric pad of thickness.
As a further improvement, the piezoelectric pad both sides are connected with electrode, and electrode is connected with adjustable voltage
Size and/or the power supply in direction.
As a further improvement, the voltage of the power supply is analog quantity voltage or digital quantity voltage.
As a further improvement, it is provided with insulation spacer between described two nuts and piezoelectric pad.
As a further improvement, the piezoelectric pad is annular.
As a further improvement, the piezoelectric gasket material is piezo-electric crystal or piezoelectric ceramics or piezo-polymeric
Thing.
As a further improvement, the piezoelectric gasket material is crystal.
As a further improvement, the piezoelectric gasket material is barium titanate.
As a further improvement, the piezoelectric gasket material is segregation PVF.
The beneficial effects of the utility model：Double nut pretension is used and using piezoelectric as adjust pad, by control
The voltage difference at piezoelectric the two poles of the earth controls the deformation of piezoelectric, so as to realize the regulation of ball guide screw nat pretightning force,
Fine setting real-time is very strong.The utility model is primarily adapted for use in the pretension of middle-size and small-size or miniature ultra-precision ball screw pair of nut.
Brief description of the drawings
Using accompanying drawing, the utility model is described in further detail, but embodiment in accompanying drawing is not constituted to of the present utility model
Any limitation, for one of ordinary skill in the art, on the premise of not paying creative work, can also be according to following attached
Figure obtains other accompanying drawings.
Fig. 1 is the three-dimensional installation diagram of ball guide screw nat.
Fig. 2 is the profile of ball guide screw nat.
Fig. 3 is the pretension schematic diagram of ball guide screw nat.
Fig. 4 is the deformation principle figure of piezoelectric.
Specific embodiment
In order that those skilled in the art more fully understands the technical solution of the utility model, below in conjunction with the accompanying drawings and tool
The utility model is described in further detail body embodiment, it is necessary to explanation is, in the case where not conflicting, the application's
Feature in embodiment and embodiment can be mutually combined.
Core of the present utility model is to provide a kind of ball guide screw nat, and it uses double nut pretension and with piezoresistive material
Expect as adjust pad, by the deformation for controlling the voltage difference at piezoelectric the two poles of the earth to control piezoelectric, so as to realize ball
The regulation of screw pair pretightning force, its pretension for being primarily adapted for use in middle-size and small-size or miniature ultra-precision ball screw pair of nut.
As shown in Figures 1 to 4, ball guide screw nat described in the utility model, including leading screw 1, ball 5, two spiral shells
Female 3, described two nuts 3 are screwed onto on leading screw 1, and wherein the nut 3 on the left side carries flange, and flange is provided with bolt hole 10, left
The nut 3 of side is connected by bolt hole 10 with the execution unit of outside.The ball 5 is arranged between nut 3 and leading screw 1,
In Fig. 2, ball road 2 is equipped with leading screw 1 and nut 3, ball 5 is provided with ball road 2, reversely rolling is additionally provided with nut 3
Road 4, the circulating rolling in ball road 2 and reverse raceway 4 of ball 5, so as to the rotary motion of leading screw 1 is converted into nut 3
Axial linear movement, precompressed is provided between described two nuts 3 can adjust thickness according to external voltage size and/or direction
Piezoelectric pad 6, between two nuts 3 on ball guide screw nat using piezoelectric pad 6 as adjust pad come
Pretension is carried out to ball guide screw nat.The both sides of piezoelectric pad 6 are connected with electrode 7, described two nuts 3 and piezoelectricity
Insulation spacer 8 is provided between material pad 6, insulation spacer 8, electrode 7 and piezoelectric pad 6 are into circular and are arranged on
Between two nuts 3.Gap, nut are left between leading screw 1 and nut 3, piezoelectric pad 6, electrode 7 and insulation spacer 8
3rd, it is tight fit between piezoelectric pad 6, electrode 7 and insulation spacer 8, it is very close to each other between each end face for contacting with each other, two
3, two, the individual nut electrode 7 of insulation spacer 8, two and piezoelectric pad 6 keep synchronous axial system.Described two electrodes 7 lead to
Cross the power supply 9 that wire is connected with adjustable voltage size and/or direction.The voltage of the power supply 9 be analog quantity voltage or
Digital quantity voltage.The form deformed by the direction controlling piezoelectric pad 6 for changing voltage, that is, control piezoelectric pad 6
Compression or stretcher strain are produced, the size of the deformation of piezoelectric pad 6, piezoelectric are controlled by the size for changing voltage
The stretching or compression of pad 6 increase or reduce the distance between two nuts 3 on leading screw 1 respectively, so as to adjust ball-screw
The pretightning force of pair of nut.The material of piezoelectric pad 6 is piezo-electric crystal such as crystal, or is piezoelectric ceramics such as barium titanate,
Or piezopolymer such as segregation PVF, insulation spacer 8 uses non-conducting material.
In figure 3, no applied voltage between two electrodes 7 at the two ends of piezoelectric pad 6, two nuts 3 are in pretension shape
State, i.e. nut 3, between insulation spacer 8, electrode 7 and piezoelectric pad 6 be close-fitting conjunction state, between mating surface without between
Gap, the moment of friction produced when being rotated more than any nut 3 of the moment of friction between each counterface in a circumferential direction, i.e.,
Frictional force between each part by part end face maintains each part synchronous axial system.Centered on piezoelectric pad 6, piezoelectric
The ball 5 of the left and right sides of pad 6 is close to the left side and right side of ball road 2 on leading screw 1 respectively, while ball 5 is close on nut 3
The right side and left side of ball road 2, when the thickness in the axial direction of piezoelectric pad 6 increases, piezoelectric pad 6 is by two spiral shells
Female 3 strut to both sides respectively, that is, increase the distance between two nuts, make to lean on tighter between ball 5 and ball road 2, so that
Increase the pretightning force of ball guide screw nat, conversely, when the thickness in the axial direction of piezoelectric pad 6 reduces, ball 5 with
Get Geng Song is depended between ball road 2, i.e., the pretightning force of ball guide screw nat is reduced on the basis of initial pretightning force；
In fig. 4, the deformation principle of piezoelectric pad 6 is carried out with the half-sectional view of piezoelectric pad 6 and electrode 7
Illustrate, a voltage difference, pressure are applied by connecting a power supply 9, i.e. the two poles of the earth to piezoelectric pad 6 between two electrodes 7
Electric material pad 6 will will produce small deformation in its axial direction, and the size of deflection is controlled by the size of voltage
System, the form of deformation is controlled by the direction of control voltage, as shown in phantom in figure 4, changes the direction of power supply 9, pressure
The deformation of electric material pad 6 will be changed into stretching or be changed into compression from stretching from compression, be applied by the two poles of the earth to piezoelectric pad 6
Power-up pressure difference, piezoelectric pad 6 produces micro-strain in its axial direction, so as to realize the micro- of ball guide screw nat pretightning force
Adjust, and it is very strong to finely tune real-time.
Many details are elaborated in above description in order to fully understand the utility model, but, this practicality is new
Type can also be different from other modes described here to implement using other, it is thus impossible to be interpreted as protecting the utility model
Protect the limitation of scope.
In a word, although the utility model lists above-mentioned preferred embodiment, although it should be noted that the skill of this area
Art personnel can carry out various change and remodeling, unless such change and remodeling deviate from scope of the present utility model, otherwise
Should be construed as being included in protection domain of the present utility model.
Claims (9)
1. a kind of ball guide screw nat, including leading screw (1), ball (5), two nuts (3), described two nuts (3) are spirally connected
On leading screw (1), the ball (5) is arranged between nut (3) and leading screw (1), it is characterised in that：Described two nuts (3)
Between precompressed be provided with the piezoelectric pad (6) that thickness can be adjusted according to external voltage size and/or direction.
2. ball guide screw nat according to claim 1, it is characterised in that：Piezoelectric pad (6) both sides connect
Electrode (7) is connected to, electrode (7) is connected with the power supply (9) in adjustable voltage size and/or direction.
3. ball guide screw nat according to claim 2, it is characterised in that：The voltage of the power supply (9) is analog quantity
Voltage or digital quantity voltage.
4. ball guide screw nat according to claim 2, it is characterised in that：Described two nuts (3) and piezoelectric
Insulation spacer (8) is provided between pad (6).
5. ball guide screw nat according to claim 2, it is characterised in that：The piezoelectric pad (6) is annulus
Shape.
6. ball guide screw nat according to any one of claim 1 to 5, it is characterised in that：The piezoresistive material backing strap
Piece (6) material is piezo-electric crystal or piezoelectric ceramics or piezopolymer.
7. ball guide screw nat according to claim 6, it is characterised in that：Piezoelectric pad (6) material is
Crystal.
8. ball guide screw nat according to claim 6, it is characterised in that：Piezoelectric pad (6) material is
Barium titanate.
9. ball guide screw nat according to claim 6, it is characterised in that：Piezoelectric pad (6) material is
Segregation PVF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621168104.4U CN206280451U (en) | 2016-11-02 | 2016-11-02 | Ball guide screw nat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621168104.4U CN206280451U (en) | 2016-11-02 | 2016-11-02 | Ball guide screw nat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206280451U true CN206280451U (en) | 2017-06-27 |
Family
ID=59085580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621168104.4U Expired - Fee Related CN206280451U (en) | 2016-11-02 | 2016-11-02 | Ball guide screw nat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206280451U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061655A (en) * | 2016-11-02 | 2017-08-18 | 广东理工学院 | Ball guide screw nat and pre-tension method |
-
2016
- 2016-11-02 CN CN201621168104.4U patent/CN206280451U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061655A (en) * | 2016-11-02 | 2017-08-18 | 广东理工学院 | Ball guide screw nat and pre-tension method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170627 Termination date: 20171102 |