CN106812795A - A kind of skid composite straight line guide rail auxiliary structure - Google Patents

A kind of skid composite straight line guide rail auxiliary structure Download PDF

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Publication number
CN106812795A
CN106812795A CN201710019306.5A CN201710019306A CN106812795A CN 106812795 A CN106812795 A CN 106812795A CN 201710019306 A CN201710019306 A CN 201710019306A CN 106812795 A CN106812795 A CN 106812795A
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CN
China
Prior art keywords
guide rail
pair
sliding pair
block
rail bar
Prior art date
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Pending
Application number
CN201710019306.5A
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Chinese (zh)
Inventor
张广鹏
王佳丽
吕斌
王妮娜
王立宇
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Xian University of Technology
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Xian University of Technology
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Filing date
Publication date
Application filed by Xian University of Technology filed Critical Xian University of Technology
Priority to CN201710019306.5A priority Critical patent/CN106812795A/en
Publication of CN106812795A publication Critical patent/CN106812795A/en
Pending legal-status Critical Current

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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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/007—Hybrid linear bearings, i.e. including more than one bearing type, e.g. sliding contact bearings as well as rolling contact bearings
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/02—Sliding-contact bearings
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/04—Ball or roller bearings
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/04—Ball or roller bearings
    • F16C29/06—Ball or roller bearings in which the rolling bodies circulate partly without carrying load
    • F16C29/0633—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides
    • F16C29/0635—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end
    • F16C29/0638—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end with balls
    • F16C29/0642—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end with balls with four rows of balls
    • F16C29/0647—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end with balls with four rows of balls with load directions in X-arrangement
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/04—Ball or roller bearings
    • F16C29/06—Ball or roller bearings in which the rolling bodies circulate partly without carrying load
    • F16C29/0633—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides
    • F16C29/0635—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end
    • F16C29/065—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end with rollers
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/08—Arrangements for covering or protecting the ways
    • F16C29/082—Arrangements for covering or protecting the ways fixed to the way

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bearings For Parts Moving Linearly (AREA)

Abstract

The invention discloses a kind of skid composite straight line guide rail auxiliary structure, roller support is passed through between roller guide rail block and guide rail bar；Bottom surface is bonded one layer of resin sliding pair in the middle part of roller guide rail block so that sliding contact between resin sliding pair and guide rail bar top surface, the composite construction of composition rolling pair and sliding pair；Or, supported by ball between spherical guide block and guide rail bar；Bottom surface is bonded one layer of resin sliding pair in the middle part of spherical guide block so that the composite construction of sliding contact between spherical guide block middle part bottom surface and guide rail bar top surface, composition rolling pair and sliding pair.Crossing position constraint elastic deformation amount and can distributing rationally for resin sliding pair of the invention, makes the composite guide rails have the advantage of rolling pair and sliding pair concurrently, both with rigidity is high, precision is good, and with big damping；, low cost good with assembly process process is not only processed, it is significant to lifting rolling linear guide product dynamic property.

Description

A kind of skid composite straight line guide rail auxiliary structure
Technical field
The invention belongs to mechanical equipment technical field, it is related to a kind of skid composite straight line guide rail auxiliary structure.
Background technology
Linear rolling guide be between way block and guide rail bar (support rails) place rolling element (including ball, rolling Post), so as to realize roll friction transmission extremely low between way block and guide rail bar, overcome rubbing existing for existing rail plate The problems such as wiping that power is big, easily creep, has the advantages that movement sensitive, guiding accuracy are high, in numerical control equipments such as Digit Control Machine Tool, robots In be widely used, be that moving component realizes low friction, the main function components of sensitive feeding in numerical control equipment.However, exactly by Rolling transmission in linear rolling guide, also causes its damping very small, compared with existing rail plate, its vibration resistance It is poor, directly affects the dynamic property of numerical control equipment.
German INA companies are directed to roller guide auxiliary structure, by between two roller guide rail blocks in a guide rail bar One slide block structure more long with oil-film damping is set, the damping characteristic of guide track system is improve to a certain extent, but Which not only needs to increase a damping slide block structure more long, and causes the guide rail structure system complex；And the damping Clearance requirement between sliding block and guide rail bar is extremely strict, could form effective oil-film damping, and this is to the damping slide block structure Processing with guide rail bar proposes requirements at the higher level with assembly precision, causes the processing of the guide track system poor with assembly process process. In addition, the damping slide block is only applicable to roller guide structure, because having depositing for ball road on spherical guide auxiliary structure middle guide bar , therefore be difficult to be applied in spherical guide pair.
Therefore a kind of simple structure, technique simplicity are developed and the new-type rolling linear guide rail structure of damping characteristic can be improved, To lifting rolling linear guide product dynamic property, promote the development of motor function part significant.
The content of the invention
It is an object of the invention to provide a kind of skid composite straight line guide rail auxiliary structure, rolling under the conditions of prior art is solved It is poor that linear guide rail structure damps small, vibration resistance；And asked in the presence of processing is poor with assembly technology using oil-film damping slide block structure Topic.
The technical solution adopted by the present invention is, a kind of skid composite straight line guide rail auxiliary structure, in roller guide rail block and guide rail By roller support between bar, rolling pair is formed；Bottom surface is bonded one layer of resin sliding pair in the middle part of roller guide rail block so that resin Sliding contact between sliding pair and guide rail bar top surface, forms the composite construction of sliding pair, composition rolling pair and sliding pair；
Or, supported by ball between spherical guide block and guide rail bar, form rolling pair；In the middle part of spherical guide block Bottom surface is bonded one layer of resin sliding pair so that sliding contact between spherical guide block middle part bottom surface and guide rail bar top surface, is formed and slided The composite construction of dynamic pair, composition rolling pair and sliding pair.
Skid composite straight line guide rail auxiliary structure of the invention, is further characterized in that：
Described resin sliding pair is provided with scraping or is carved with oil storage tank with the sliding contact surface of guide rail bar.
The top surface of described guide rail bar posts one layer of buffer zone.
Tack plug is set in the screw hole of described guide rail bar top surface.
The beneficial effects of the invention are as follows the characteristics of the guideway has rolling pair and sliding pair concurrently, by rolling guide block Increase resin rail plate pair between guide rail bar to increase damping, improve the vibration resistance of rolling guide, to developing new rolling Dynamic guide rail product is significant.
Brief description of the drawings
Fig. 1 is existing German INA bands oil-film damping rolling guide system structure diagram；
Fig. 2 is existing German INA bands oil-film damping rolling guide system cross section structure schematic diagram；
Fig. 3 is roller-type skid composite straight line guideway structural representation of the invention；
Fig. 4 is ball-type skid composite straight line guideway structural representation of the invention；
Fig. 5 is the structural representation of the skid composite guide rails of use buffer zone of the invention；
Fig. 6 is the structural representation of the skid composite guide rails of use tack plug of the invention.
In figure, 1. guide rail bar, 2. roller guide rail block, 3. oil-film damping sliding block, 4. roller, 5. resin sliding pair, 6. ball, 7. spherical guide block, 8. screw, 9. buffer zone, 10. tack plug.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and detailed description.
Reference picture 1, Fig. 2, is a kind of existing roller guide auxiliary structure of German INA companies, by a guide rail bar 1 Two roller guide rail blocks 2 between set an oil-film damping sliding block 3 more long, guide track system is improve to a certain extent Damping characteristic, but which not only needs one oil-film damping sliding block 3 more long of increase, causes the guide rail structure system complex, And structure owes compact；And clearance requirement between the oil-film damping sliding block 3 and guide rail bar 1 is extremely strict, such as Fig. 2 gaps will Ask small and uniform, effective oil-film damping could be formed, this is to the processing between oil-film damping sliding block 3 and guide rail bar 1 and assembling Precision proposes requirements at the higher level, causes the processing of the guide track system poor with assembly process process.
Oil-film damping sliding block 3 in Fig. 2 is only applicable in roller guide auxiliary structure, because of spherical guide auxiliary structure middle guide bar On have the presence of ball road, cause small between way block 2 and guide rail bar 1 and uniform gap is difficult to ensure that, therefore be difficult in rolling Applied in pearl guideway.
Reference picture 3, structure of the skid composite straight line guideway of the present invention in roller-type guide rail is, in roller guide rail block 2 Supported by roller 4 between guide rail bar 1, realize rolling movement, form rolling pair, bear main external applied load；In roller guide The middle part bottom surface of block 2 is bonded one layer of resin sliding pair 5 of coefficient of friction very little so that between resin sliding pair 5 and the top surface of guide rail bar 1 Sliding contact, damping is slided so as to be formed between the middle part bottom surface of roller guide rail block 2 and the top surface of guide rail bar 1, forms sliding pair, group Into rolling pair and the composite construction of sliding pair, the vibration resistance of whole skid composite straight line guideway is improved.
Reference picture 4, structure of the skid composite straight line guideway of the present invention in ball-type guide rail is, in spherical guide block 7 Supported by ball 6 between guide rail bar 1, realize rolling movement, form rolling pair, bear main external applied load；In spherical guide The middle part bottom surface of block 7 is bonded one layer of resin sliding pair 5 of coefficient of friction very little so that the middle part bottom surface of spherical guide block 7 and guide rail bar 1 Sliding contact between top surface, damping is slided so as to be formed between the middle part bottom surface of spherical guide block 7 and the top surface of guide rail bar 1, is formed Sliding pair, composition rolling pair and the composite construction of sliding pair, improve the vibration resistance of whole skid composite straight line guideway.
Scraping can be also carried out on the contact surface of resin sliding pair 5 and the top surface of guide rail bar 1 or oil storage tank is carved, to increase slip The damping characteristic and wearability of guideway.
The position constraint elastic deformation amount that crosses of resin sliding pair 5 should not be too big, and otherwise frictional force is too big, easily causes guide rail to be climbed OK, while also losing rail plate increases the effect of damping, it is therefore desirable to which rationally determine resin sliding pair 5 crosses position constraint bullet Property deflection size, its determination principle is as follows with method：
If the elastic deformation amount in the case where position constraint effect is crossed of resin sliding pair 5 is δ, the rolling of skid composite straight line guideway Secondary stiffness matrix is [Kg], when external applied load { F } is acted on skid composite straight line guideway, the position produced by whole guideway Move array { XjRepresent, at this moment rolling pair and sliding pair respectively bear a part of load, and wherein rolling guide-rail pairs bear main load Lotus.
Rolling pair rigidity and the approximately linear relation of guideway displacement, therefore the drag matrix { F of rolling pairR1It is expressed as following formula (1)：
{FR1}=[Kg] { Xj(1) wherein { FRjAnd { XjIt is 6 × 1 arrays；[Kg] is 6 × 6 square formations.
Sliding pair rigidity have it is non-linear, it is relevant with position constraint elastic deformation amount δ is crossed, therefore the drag matrix of sliding pair {FR2It is represented by following formula (2)：
{FR2}=f (δ, Xj) (2) wherein { FR2It is 6 × 1 arrays；Nonlinear function f (δ, Xj) have with structural material etc. Close, can be determined by experiment out.
From force balance type：
{FR1}+{FR2}={ F } (3)
In above-mentioned force balance type, wherein the counter-force for moving along the rail direction is total frictional force Fz, i.e.,
Fz=FR1z+(N+FR2y)μ (4)
Wherein, FR1zIt is force of rolling friction, the pretension degree with rolling pair is relevant, can be by experiment test out；μ is slided Secondary coefficient of friction, can be determined by experiment；N is the internal force size of the elastic deformation amount δ for producing sliding pair, with position constraint bullet excessively δ is relevant for property deflection, can be determined by experiment out；FR2yFor external force is applied to sliding pair normal force.
Corresponding guideway under the conditions of different loads { F } corresponding with δ is can determine by above-mentioned formula (1), (2), (3) Displacement { Xj, then calculate on rail plate secondary surface displacement array { λ at any point using following formula (5)j}：
{λj}=T { Xj} (5)
Wherein, T is coordinate conversion matrix.
Normal Displacement λ on rail plate secondary surface at any point can be obtained by formula (5)n.Due to Normal Displacement λnWith Normal direction face pressure PnIn nonlinear function, and due to the damping value c in sliding pair contact surface unit areanIt is normal direction face pressure PnNonlinear function, therefore according to Normal Displacement λ at any point on the foregoing rail plate secondary surface derivednBy to cunning Dynamic face is integrated obtains the secondary damping value C of rail platen：
Cn=∫ cnds (6)
According to above-mentioned formula (4), (6), the elasticity of position constraint excessively of rational resin sliding pair is determined using optimization method Deflection δ, it is ensured that the existing larger damping value of sliding pair, is unlikely to frictional force excessive again.
Reference picture 5, Fig. 6, the mounting means of guide rail bar 1 is to be provided with multiple screw holes vertically in the top surface of guide rail bar 1, each Screw 8 is installed, it is firm that guide rail bar 1 is fixedly connected by multiple screws 8 with basic part, however, to ensure that sliding in screw hole The validity of guideway, in addition it is also necessary to which the top surface to guide rail bar 1 carries out corresponding smooth treatment.In Fig. 5, in the top surface of guide rail bar 1 One layer of buffer zone 9 is posted, the top surface of guide rail bar 1 is kept smooth along longitudinal direction；In Fig. 6, set in the screw hole of the top surface of guide rail bar 1 Horizontalization head plug 10, is filled and led up so that the top surface of guide rail bar 1 is smooth such as one.

Claims (4)

1. a kind of skid composite straight line guide rail auxiliary structure, it is characterised in that：Lead between roller guide rail block (2) and guide rail bar (1) Roller (4) support is crossed, rolling pair is formed；One layer of resin sliding pair (5) is bonded in roller guide rail block (2) middle part bottom surface so that tree Sliding contact between fat sliding pair (5) and guide rail bar (1) top surface, forms the composite junction of sliding pair, composition rolling pair and sliding pair Structure；
Or, supported by ball (6) between spherical guide block (7) and guide rail bar (1), form rolling pair；In spherical guide Block (7) middle part bottom surface is bonded one layer of resin sliding pair (5) so that spherical guide block (7) middle part bottom surface and guide rail bar (1) top surface it Between sliding contact, form sliding pair, the composite construction of composition rolling pair and sliding pair.
2. skid composite straight line guide rail auxiliary structure according to claim 1, it is characterised in that：Described resin sliding pair (5) scraping is carried out with the sliding contact surface of guide rail bar (1) or oil storage tank is carved.
3. skid composite straight line guide rail auxiliary structure according to claim 1, it is characterised in that：Described guide rail bar (1) Top surface posts one layer of buffer zone (9).
4. skid composite straight line guide rail auxiliary structure according to claim 1, it is characterised in that：Described guide rail bar (1) top Tack plug (10) is set in the screw hole in face.
CN201710019306.5A 2017-01-11 2017-01-11 A kind of skid composite straight line guide rail auxiliary structure Pending CN106812795A (en)

Priority Applications (1)

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CN201710019306.5A CN106812795A (en) 2017-01-11 2017-01-11 A kind of skid composite straight line guide rail auxiliary structure

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Application Number Priority Date Filing Date Title
CN201710019306.5A CN106812795A (en) 2017-01-11 2017-01-11 A kind of skid composite straight line guide rail auxiliary structure

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108468714A (en) * 2018-04-16 2018-08-31 盐城工学院 Skid composite guide rails
CN109973523A (en) * 2019-04-07 2019-07-05 苏州华正工业科技有限公司 A kind of narrow linear guide rail device of high linear precision lengthening

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4235569A1 (en) * 1992-10-22 1994-04-28 Schaeffler Waelzlager Kg Linear guide for guide of machine tool - has squeeze hydraulic film between surfaces as oscillation damper
CN1298476A (en) * 1998-03-18 2001-06-06 机械系统有限公司 Polymer linear guide
CN201448370U (en) * 2009-06-26 2010-05-05 广东高新凯特精密机械股份有限公司 Protective band plate used in linear rolling guide rail
CN103097752A (en) * 2011-09-07 2013-05-08 日本精工株式会社 Linear motion guide device
CN203696598U (en) * 2013-12-10 2014-07-09 江门市奥斯龙机械有限公司 Guide rail protecting mechanism of machining center
CN103921133A (en) * 2013-01-15 2014-07-16 南京理工大学 Novel linear rolling and sliding composite guide rail pair

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4235569A1 (en) * 1992-10-22 1994-04-28 Schaeffler Waelzlager Kg Linear guide for guide of machine tool - has squeeze hydraulic film between surfaces as oscillation damper
CN1298476A (en) * 1998-03-18 2001-06-06 机械系统有限公司 Polymer linear guide
CN201448370U (en) * 2009-06-26 2010-05-05 广东高新凯特精密机械股份有限公司 Protective band plate used in linear rolling guide rail
CN103097752A (en) * 2011-09-07 2013-05-08 日本精工株式会社 Linear motion guide device
CN103921133A (en) * 2013-01-15 2014-07-16 南京理工大学 Novel linear rolling and sliding composite guide rail pair
CN203696598U (en) * 2013-12-10 2014-07-09 江门市奥斯龙机械有限公司 Guide rail protecting mechanism of machining center

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108468714A (en) * 2018-04-16 2018-08-31 盐城工学院 Skid composite guide rails
CN109973523A (en) * 2019-04-07 2019-07-05 苏州华正工业科技有限公司 A kind of narrow linear guide rail device of high linear precision lengthening

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Application publication date: 20170609