CN109425303A - A kind of ball-screw stress axial deformation detection system - Google Patents
A kind of ball-screw stress axial deformation detection system Download PDFInfo
- Publication number
- CN109425303A CN109425303A CN201710760014.7A CN201710760014A CN109425303A CN 109425303 A CN109425303 A CN 109425303A CN 201710760014 A CN201710760014 A CN 201710760014A CN 109425303 A CN109425303 A CN 109425303A
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- Prior art keywords
- ball
- screw
- nut
- fixed
- fixed station
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
Abstract
The invention discloses a kind of ball-screw stress axial deformation detection systems, including fixed station, fixture nut fixed frame on fixed station, the nut of ball-screw is fixed on the nut fixed frame, ball-screw passes through the nut, and the fixture of ball-screw rotation is fixed on fixed station one end, and the fixed station other end is equipped with hydraulic loaded machine, hydraulic loaded machine acts on the end of the ball-screw, axially applies pressure along ball-screw；Fixed laser displacement sensor on ball-screw, laser displacement sensor are directed to the end of the nut.A kind of ball-screw stress axial deformation detection system of the invention, nut is fixed on fixed station, and the rotation of ball-screw is limited by fixture, then pressure is applied to the axial of ball-screw by hydraulic loaded machine, the deformation that roll structure may occur under ball screw assembly, load condition is accurately detected by the pressure sensor on ball screw.
Description
Technical field
The present invention relates to a kind of ball-screw stress axial deformation detection systems.
Background technique
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.
Ball-screw is made of screw rod, nut, steel ball, pre- tabletting, reverser, dust excluder.Ball-screw bearing is to adapt to
Various uses provides the miscellaneous product of standardization.It is widely used in lathe, the endless form of ball has circulation conduit
Formula, circulator formula, end cover type.Precompressed mode has positioning precompressed, level pressure precompressed.Appropriate type can be selected depending on the application.Screw rod has
The precision ball screw of high-precision attrition process and cold rolling ball-screw bearing through High Precision Cold machine-shaping.
There are two types of common endless form: outer circulation and interior circulation.Ball connects with lead screw disengaging sometimes in cyclic process
Touching is known as outer circulation；Always what is be kept in contact with lead screw is known as interior circulation.Each circulation of ball is closed circuit to be known as arranging, each rolling
The closed circuit interior contained lead number of pearl circulation is known as enclosing number.Each nut of interior circular rolling ball screw pair has 2 column, 3 column, 4 column, 5 column etc.
Several, each column only has a circle；It is several that 1.5 circles, 2.5 circles and 3.5 circles etc. are often shown in outer circulation.
1) outer circulation: outer circulation is that ball is returned after cyclic process by the helicla flute of nut outer surfaces or intubation
Circulation is reentered between feed screw nut.Echo plex mode when outer circulation ball guide screw nat is by ball-recirculation mainly has end cap
Formula, cannula type and spiral groove type.Common outer circulation mode end cover type；Cannula type；Spiral groove type.End cover type is processed on nut
One longitudinal hole is provided with the backhaul mouth of ball as the return pass of ball on the cover board at nut both ends, thus ball enters backhaul
Pipe forms circulation.Cannula type, it uses bend pipe as return duct, and this processability of product structure is good, but due to the prominent nut of pipeline
In vitro, radial dimension is larger.Spiral groove type, it is that helicla flute is milled out in nut outer circle, and the both ends of slot drill out through-hole and and spiral shell
Line raceway is tangent, forms backward channel, and this structure is smaller than cannula type structure radial dimension, but manufactures more complex.Outer circulation rolling
Ballscrew outer circulation structure and manufacturing process are simple, using extensive.The disadvantage is that raceway seam crossing is difficult to be made smooth, influence to roll
The stationarity of pearl raceway.
2) circulation in: interior circulation is all made of reverser and realizes ball-recirculation, and there are two types of types for reverser.Cylinder convex key is reversed
Device, in its column part inserted num, end is provided with opposing slot.Round key of the opposing slot by cylinder periphery and the upper end is fixed
Position, to guarantee to be directed at screw thread direction.Oblate insert reverser, reverser are general round end flat key insert, and insert is embedded in spiral shell
In female grooving, end is provided with opposing slot, is positioned with the outer profile of insert.Two kinds of reversers compare, and latter dimensions are smaller, from
And it reduces the radial dimension of nut and shortens axial dimension.But the grooving size on the outer profile and nut of this reverser
Required precision is higher.
Summary of the invention
Goal of the invention: being directed to the above-mentioned prior art, proposes a kind of ball-screw stress axial deformation detection system, realizes rolling
The accurate detection of ballscrew stress axial deformation.
Technical solution: a kind of ball-screw stress axial deformation detection system, including fixed station, it is fixed on the fixed station
Nut fixed frame, the nut of ball-screw are fixed on the nut fixed frame, and the ball-screw passes through the nut, described
The fixture of ball-screw rotation is fixed on fixed station one end, the fixed station other end is equipped with hydraulic loaded machine, described hydraulic
Load machine acts on the end of the ball-screw, axially applies pressure along the ball-screw；It is fixed on the ball-screw
Laser displacement sensor, the laser displacement sensor are directed to the end of the nut.
Further, the nut fixed frame is the annulus set that center is equipped with through-hole, the end of annulus set with it is described
The bottom of nut end connection, the annulus set is fixed on the fixed station.
It further, further include the pressure sensing that hydraulic loaded machine effect end and the ball-screw end is set
Device and cylindrical support module, cylindrical support module section is greater than the ball-screw diameter, and is coaxially disposed, described
The preparation of cylindrical support module iron cobalt nickel alloy.
The utility model has the advantages that a kind of ball-screw stress axial deformation detection system of the invention, nut are fixed on fixed station,
And the rotation of ball-screw is limited by fixture, pressure is then applied to the axial of ball-screw by hydraulic loaded machine, is passed through
Pressure sensor on ball screw accurately detects the deformation that roll structure may occur under ball screw assembly, load condition.
Specific embodiment
Further explanation is done to the present invention below.
A kind of ball-screw stress axial deformation detection system, including fixed station, fixture nut fixed frame on fixed station, rolling
The nut of ballscrew is fixed on the nut fixed frame, and ball-screw passes through the nut, is fixed with rolling on fixed station one end
The fixture of ballscrew rotation, the fixed station other end are equipped with hydraulic loaded machine, and hydraulic loaded machine acts on the end of ball-screw, edge
Ball-screw axially applies pressure；Fixed laser displacement sensor on the ball-screw, the laser displacement sensor are directed to
The end of the nut.
Wherein, nut fixed frame is the annulus set that center is equipped with through-hole, and the end of annulus set is connect with nut end, annulus
The bottom of set is fixed on the fixed station.It further include the pressure biography that hydraulic loaded machine effect end and ball-screw end are set
Sensor and cylindrical support module, cylindrical support module section is greater than the ball-screw diameter, and is coaxially disposed, cylindrical
The preparation of supporting module iron cobalt nickel alloy.Hydraulic loaded machine real-time display and can record its pressure being applied on ball-screw,
Acting on setting pressure sensor between end and ball-screw at it is and to pass through circle to further detect and apply stressed size
Pillar support module increases receptor area.In testing engineering, the output valve of laser displacement sensor is sent out by data collecting card
Host computer is sent to record deformation size.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (3)
1. a kind of ball-screw stress axial deformation detection system, it is characterised in that: fixed on the fixed station including fixed station
Nut fixed frame, the nut of ball-screw are fixed on the nut fixed frame, and the ball-screw passes through the nut, described
The fixture of ball-screw rotation is fixed on fixed station one end, the fixed station other end is equipped with hydraulic loaded machine, described hydraulic
Load machine acts on the end of the ball-screw, axially applies pressure along the ball-screw；It is fixed on the ball-screw
Laser displacement sensor, the laser displacement sensor are directed to the end of the nut.
2. ball-screw stress axial deformation detection system according to claim 1, it is characterised in that: the nut is fixed
Frame is the annulus set that center is equipped with through-hole, and the end of the annulus set is connect with the nut end, the bottom of the annulus set
It is fixed on the fixed station.
3. ball-screw stress axial deformation detection system according to claim 1, it is characterised in that: further include that setting exists
The pressure sensor and cylindrical support module at the hydraulic loaded machine effect end and the ball-screw end, the cylinder
Supporting module section is greater than the ball-screw diameter, and is coaxially disposed, the cylindrical support module iron cobalt nickel alloy preparation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710760014.7A CN109425303A (en) | 2017-08-30 | 2017-08-30 | A kind of ball-screw stress axial deformation detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710760014.7A CN109425303A (en) | 2017-08-30 | 2017-08-30 | A kind of ball-screw stress axial deformation detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109425303A true CN109425303A (en) | 2019-03-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710760014.7A Pending CN109425303A (en) | 2017-08-30 | 2017-08-30 | A kind of ball-screw stress axial deformation detection system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113532854A (en) * | 2021-06-25 | 2021-10-22 | 北京机械设备研究所 | Axial loading testing device for ball screw pair |
| CN113532854B (en) * | 2021-06-25 | 2024-04-26 | 北京机械设备研究所 | Axial loading testing device for ball screw pair |
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2017
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| CN102620929A (en) * | 2012-03-15 | 2012-08-01 | 南京理工大学 | Device and method for testing precision retaining ability of ball screw assembly |
| CN103017992A (en) * | 2012-12-15 | 2013-04-03 | 南京理工大学 | Device and method for measuring static rigidity of rolling linear guide rail pair |
| CN103018104A (en) * | 2012-12-26 | 2013-04-03 | 南京理工大学 | Horizontal measuring device for axial static rigidity of ball screw pair and method thereof |
| CN103913384A (en) * | 2013-01-08 | 2014-07-09 | 陕西汉江机床有限公司 | Axial rigidity measuring apparatus of ball screw assembly |
| CN203616122U (en) * | 2013-11-28 | 2014-05-28 | 上海理工大学 | Static stiffness measuring device of ball screw pair |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113532854A (en) * | 2021-06-25 | 2021-10-22 | 北京机械设备研究所 | Axial loading testing device for ball screw pair |
| CN113532854B (en) * | 2021-06-25 | 2024-04-26 | 北京机械设备研究所 | Axial loading testing device for ball screw pair |
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Application publication date: 20190305 |
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