CN104034522B - Experiment table for detecting static rigidity of rolling linear guide rail pair - Google Patents
Experiment table for detecting static rigidity of rolling linear guide rail pair Download PDFInfo
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- CN104034522B CN104034522B CN201410270145.3A CN201410270145A CN104034522B CN 104034522 B CN104034522 B CN 104034522B CN 201410270145 A CN201410270145 A CN 201410270145A CN 104034522 B CN104034522 B CN 104034522B
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Abstract
The invention discloses an experiment table for detecting static rigidity of a rolling linear guide rail pair. The experiment table comprises a guide rail pair installation plate, left and right support seats, and a test guide rail, wherein the guide rail pair installation plate and the left and right support seats are installed on a T-shaped groove platform, the test guide rail is installed on the guide rail pair installation plate, a pressing plate is fixed on a sliding block of the test guide rail to avoid crushing the sliding block during direct loading, a force application beam stretches across and is fixed on the left and right support seats and is loaded through a loading bolt, a loading force is controlled and measured by a weighing sensor, and the deformation is measured by an inductance measuring head. Three screw holes are formed in the force application beam and the left support seat and can apply a vertical load, a rolling moment and a horizontal load respectively, and the sliding block and the pressing plate of the mobile test guide rail can apply a capsizing moment and a rotation moment. By means of the experiment table, detection of static rigidity of the rolling linear guide rail pair under five kinds of loading actions is achieved, meanwhile, practical installation working conditions of the guide rail are met, and the loading manner is simple and reliable.
Description
Technical field
The present invention relates to detection linear rolling guide performance devices are and in particular to a kind of detection linear rolling guide is quiet
The device of rigidity.
Background technology
Digit Control Machine Tool is high-end equipment manufacturing industry " machine-tool ".The gathering around of the upper national Digit Control Machine Tool in the world today
The amount of having and development level, are the important guarantees of its modernization of industry and overall national strength.In the properties of Digit Control Machine Tool, quiet firm
Degree is an important technical indicator, refers to the ability of lathe resistance to deformation when bearing load.The static deformation of lathe not only can
Cause certain mismachining tolerance, vibration resistance, abrasion, heating and working life of lathe etc. can be affected simultaneously.Therefore, set in lathe
The meter stage is detected to its Static stiffness, and then carries out structure optimization, and this has realistic meaning to Machine Tool design.
Linear rolling guide is typically made up of guide rail, slide block, rolling element, reverser and retainer, and it is a kind of new
The rolling support making relatively linear reciprocating motion, can replace directly sliding with the steel ball rolling between slide block and guide rail connects
Touch, and rolling element can realize Infinite Cyclic by reverser in guide rail and slide block.Linear rolling guide has friction
Coefficient is little, running precision is high, no creep, the advantages of rigidity is high, be widely used as leading of high-precision numerical control machine and machining center
To functional part.
In order to accurately be predicted to machine static rigidity, it is necessary for first the Static stiffness of linear rolling guide being carried out
Detection and analysis.At present, the THK company of the guide rail manufacturer of foreign well-known such as Japan, NSK company, Aktiebolaget SKF of Sweden etc.
All there is advanced linear rolling guide specialty testing equipment, but due to blockade on new techniques it is impossible to obtain particulars.Domestic right
Research in linear rolling guide Static stiffness has mainly obtained some computing formula by theoretical modeling, and rare people is carried out
The experiment of guideway Static stiffness.It is still living and in good health in the side of the Central China University of Science and Technology《Linear rolling guide performance evaluation and Static stiffness testing machine
Develop》In describe a kind of linear rolling guide Static stiffness testing machine of computer controls, this testing machine passes through hydraulic cylinder pair
Guideway is loaded, and measures loading force and deformation respectively with force snesor and inductive displacement transducer, and then obtains guide rail
Secondary Static stiffness curve.Existing Static stiffness computing formula is provided with some assumed conditions, thus result of calculation have can with actual
Can there is larger error, and the Static stiffness testing machine that Fang Jian develops can only apply the load of vertical direction to guideway, therefore
The Static stiffness obtaining is also the Static stiffness under vertical load effect.
Content of the invention
It is an object of the invention to provide the simple and reliable experiment dress of a kind of actual installation operating mode meeting guide rail, load mode
Put, be capable of the Static stiffness detection under following five kinds of load effects to linear rolling guide：With reference to Fig. 1, rolling linear
Guideway only moves in the X direction, and the movement in other both directions and the rotation around three reference axis are restricted, suffered
Power and moment be respectively horizontal load FY, turning moment MZ, rolling moment MX, vertical load FZ, tilting moment MY, corresponding inclined
Move and deflect the offset alpha being respectively horizontal direction1, deflection α about the z axis2, around the deflection α of X-axis3, the offset alpha of vertical direction4, around
The deflection α of Y-axis5.
For reaching object above, the present invention adopts the following technical scheme that and is achieved：
A kind of experimental bench of detection linear rolling guide Static stiffness, fixed including the guideway being arranged on T-slot platform
Position clamping device, charger and device for detecting deformation are it is characterised in that described guideway positioning clamping device includes a guide rail
Secondary installing plate, it is vertically fixed on the horizontal centre of this T-slot platform upper surface along T-slot platform, on this guideway installing plate
It is provided with two laterally stepped planes and a vertically oriented datum level, install with slide block wherein on high bit-planes
Test guide rail, low level Plane Installation fastening blend stop abuts against on the vertically oriented datum level on high bit-planes by testing guide rail, institute
State slide block and be provided with pressing plate；Described charger includes being fixed on by left and right bearing on T-slot platform and across pressing plate
Force crossbeam, this crossbeam is provided with two screws, is connected with the LOAD CELLS below crossbeam by loading bolt and applies respectively
The vertical load point of application on pressing plate for the power, the rolling moment point of application；Described left support abutment is provided with a screw to be passed through to load spiral shell
Bolt forces in the horizontal load point of application on pressing plate；Described device for detecting deformation includes two and is arranged on T-slot platform
Indicator bracket, each indicator bracket is respectively provided with an inductance probe and is contacted with the deformation measuring point on pressing plate.
In such scheme, described loading bolt and LOAD CELLS junction are provided with loading head, are positioned by a block.
Described fastening blend stop is to be kept off by fastening by testing guide rail and abutting against on the vertically oriented datum level on high bit-planes
Holding screw on bar holds out against test guide rail from side and realizes.
The T-slot of described T-slot platform is the laterally and longitudinally vertical latticed T-slot of some planes, when carrying out lead more
During the Static stiffness test of rail, described guideway installing plate relative set is polylith, can install many test guide rails simultaneously.
Compared with prior art, its advantage is the present invention：
(1) it is capable of linear rolling guide and (include horizontal load F in five kinds of loadY, turning moment MZ, rolling moment
MX, vertical load FZWith tilting moment MY) effect under Static stiffness detection；
(2) guideway positioning clamping meet reality installation operating mode, load mode simple and reliable it is easy to operation；
(3) this experimental provision is somewhat reequiped, the Static stiffness inspection of double guide rail Four-slider workbench can be done further
Survey experiment.
Brief description
Fig. 1 is linear rolling guide stress and deformation relationship schematic diagram.
Fig. 2 is present configuration stereogram.
Fig. 3 is front portion of the present invention perspective view.
Fig. 4 is the point of application and deformation point layout figure on Fig. 2 center platen.
Reference in Fig. 2 and Fig. 3：1.T shape groove platform, 2. left support abutment, 3. exert a force crossbeam, 4. guideway installing plate,
5. loading bolt, 6. loading head, 7. block, 8. pressing plate, 9. right support abutment, 10. inductance probe, 11. indicator brackets, 12. tests are led
Rail, 13. fastening blend stops, 14. LOAD CELLSs, 15. holding screws.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment is described in further detail to the present invention.
With reference to Fig. 2 and Fig. 3, a kind of experimental bench of detection linear rolling guide Static stiffness, position clamping including guideway
Device, charger and three parts of device for detecting deformation.Guideway positioning clamping device, charger and device for detecting deformation
All it is fixed on T-slot platform 1.
Wherein guideway positioning clamping device includes guideway installing plate 4, fastening blend stop 13, test guide rail 12 and pressing plate 8.
Guideway installing plate 4 is vertically fixed in the centre in T-slot platform 1 upper surface width direction (Fig. 3 front) along T-slot platform, surveys
Examination guide rail 12 is separately mounted to the going up or down stairway position on guideway installing plate with fastening blend stop 13, by holding screw 15 from side
Face holds out against test guide rail 12 against the positioning reference plane on guideway installing plate 4, and pressing plate 8 is fixed on the cunning of test guide rail 12
On block, it is to avoid damage slide block by pressure when directly test guide rail being loaded.
Charger includes left support abutment 2, force crossbeam 3, loading bolt 5, LOAD CELLS 14 and right support abutment 9.Left support abutment 2
Symmetrically it is fixed on the both sides of guideway installing plate 4 with right support abutment 9, force crossbeam 3 across pressing plate 8 and is fixed on left support abutment 2 and the right side
Bearing 9 upper end, is loaded by loading bolt 5, and the size of loading force to be controlled and measured by LOAD CELLS 14.In force
Two screws are had on crossbeam 3, applies vertical load F respectivelyZWith rolling moment MX, and a screw is had on left support abutment 2, permissible
Apply horizontal load FY, the slide block of mobile test guide rail 12 and pressing plate 8, tilting moment M can be appliedYWith turning moment MZ.
If loading bolt 5 is directly afterburning to LOAD CELLS 14, a moment of friction can be produced, therefore done one with
The loading head 6 of loading bolt 5 gap cooperation, in order to prevent loading head 6 in loading procedure from rotating, is done squarely, is used in combination
Block 7 is constraining.
Device for detecting deformation includes two indicator brackets 11 and two inductance probes 10.Indicator bracket 11 is inhaled by magnetic force
It is attached on T-slot platform 1, inductance probe 10 is fixed on indicator bracket 11, (correspond in Fig. 4 with the deformation measuring point on pressing plate 8
B class deformation measuring point under five kinds of load effects) contact.
With reference to Fig. 4, arrow represents the position of the point of application, and circle represents the position of deformation measuring point.Vertical load FZUnder effect
Static stiffness test the point of application be arrow a1, deformation measuring point be circle b1 and circle b2；Rolling moment MXThe point of application under effect
For arrow a2, deformation measuring point is circle b1 and circle b2；Tilting moment MYThe point of application under effect is arrow a3, and deformation measuring point is
Circle b2 and circle b3；Horizontal load FYThe point of application under effect is arrow a4, and deformation measuring point is circle b4 and circle b5；Rotation
Moment MZThe point of application under effect is arrow a5, and deformation measuring point is circle b4 and circle b5.The size of moment is equal to loading force
Size is multiplied by the arm of force.Vertical load FZWith horizontal load FYThe deformation recording is the mean value of two inductance probe measured values, other
Under three kinds of moment loadings deformation for two inductance probe measured values difference divided by measuring point between distance.
Some laterally and longitudinally perpendicular T-slots of plane are opened on T-slot platform 1, can easily device have been carried out
Dismounting, as double guide rail Four-slider workbench Static stiffness test when, need two pieces of guideway installing plates 4, install two test
Guide rail 12.
The invention provides a kind of Static stiffness under five kinds of load act on can be detected to linear rolling guide
Device, meets the actual installation operating mode of guide rail simultaneously, and load mode is simple and reliable, is easy to be extended and applied.
Claims (1)
1. a kind of experimental bench of detection linear rolling guide Static stiffness, including the guideway positioning being arranged on T-slot platform
Clamping device, charger and device for detecting deformation are it is characterised in that described guideway positioning clamping device includes a guideway
Installing plate, it is vertically fixed on the horizontal centre of this T-slot platform upper surface along T-slot platform, and this guideway installing plate sets
It is equipped with two laterally stepped planes and a vertically oriented datum level, the survey with slide block is installed wherein on high bit-planes
Examination guide rail, low level Plane Installation fastening blend stop abuts against on the vertically oriented datum level on high bit-planes by testing guide rail, described
Slide block is provided with pressing plate；Described charger includes being fixed on by left and right bearing on T-slot platform and across pressing plate
Force crossbeam, this crossbeam is provided with two screws, is connected with the LOAD CELLS below crossbeam by loading bolt and exerts a force respectively
The vertical load point of application on pressing plate, the rolling moment point of application；Described left support abutment is provided with a screw and passes through loading bolt
Force in the horizontal load point of application on pressing plate；By slide block and the pressing plate of mobile test guide rail, apply tilting moment and rotation
Moment；Described device for detecting deformation includes two indicator brackets being arranged on T-slot platform, and each indicator bracket is respectively provided with
One inductance probe is contacted with the deformation measuring point on pressing plate；
Described fastening blend stop is by fastening on blend stop by testing guide rail and abutting against on the vertically oriented datum level on high bit-planes
Holding screw from side hold out against test guide rail and realize；
The T-slot of described T-slot platform is the laterally and longitudinally vertical latticed T-slot of some planes, when carrying out many guide rails
During Static stiffness test, described guideway installing plate relative set is polylith, and installs many test guide rails simultaneously；
Described loading bolt and LOAD CELLS junction are provided with square loading head, are positioned by a block.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410270145.3A CN104034522B (en) | 2014-06-17 | 2014-06-17 | Experiment table for detecting static rigidity of rolling linear guide rail pair |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410270145.3A CN104034522B (en) | 2014-06-17 | 2014-06-17 | Experiment table for detecting static rigidity of rolling linear guide rail pair |
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| CN104034522A CN104034522A (en) | 2014-09-10 |
| CN104034522B true CN104034522B (en) | 2017-02-22 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105651509A (en) * | 2016-03-30 | 2016-06-08 | 吉林大学 | Hydrostatic-pressure guide rail performance quick-detecting device of heavy-duty machine tool |
| CN105973550B (en) * | 2016-05-26 | 2019-02-22 | 南京理工大学 | Five kinds of Static stiffness comprehensive measurement devices of line slideway auxiliary and its method |
| CN108000236B (en) * | 2018-01-08 | 2020-11-27 | 内蒙古科技大学 | Device for detecting accelerated wear degradation rule of machine tool linear guide rail pair |
| CN109000903B (en) * | 2018-05-31 | 2020-03-31 | 东北大学 | Rolling linear guide rail and ball screw system reliability test loading device and method |
| CN110120257B (en) * | 2019-05-20 | 2020-05-22 | 哈尔滨理工大学 | T-shaped curve correcting force prediction model establishing method |
| CN112264837B (en) * | 2020-09-16 | 2022-09-02 | 天津大学 | Cradle type five-axis numerical control machine tool swing table static rigidity detection device and method thereof |
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| CN2881598Y (en) * | 2006-03-09 | 2007-03-21 | 中国船舶重工集团公司第七一一研究所 | Screw type load shelf |
| CN101419143A (en) * | 2008-11-21 | 2009-04-29 | 同济大学 | Bidirectional composite force loading test device for masonry test piece |
| CN102607757A (en) * | 2012-03-21 | 2012-07-25 | 重庆长安汽车股份有限公司 | Experimental device for static pressure of automobile parts |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3331755B2 (en) * | 1994-07-19 | 2002-10-07 | 日本精工株式会社 | High-precision mounting method of linear guide rail |
| CN201037803Y (en) * | 2007-03-28 | 2008-03-19 | 清华大学 | Rolling line guide rail accessory static rigidity experiment platform |
| CN102262025A (en) * | 2011-04-28 | 2011-11-30 | 清华大学 | Experimental platform for linear rolling guide rail pair |
| CN103017992B (en) * | 2012-12-15 | 2014-12-24 | 南京理工大学 | Device and method for measuring static rigidity of rolling linear guide rail pair |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2881598Y (en) * | 2006-03-09 | 2007-03-21 | 中国船舶重工集团公司第七一一研究所 | Screw type load shelf |
| CN101419143A (en) * | 2008-11-21 | 2009-04-29 | 同济大学 | Bidirectional composite force loading test device for masonry test piece |
| CN102607757A (en) * | 2012-03-21 | 2012-07-25 | 重庆长安汽车股份有限公司 | Experimental device for static pressure of automobile parts |
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