CN104236483B - Device and method for measuring precision and friction force of rolling linear guide rail pair - Google Patents

Device and method for measuring precision and friction force of rolling linear guide rail pair Download PDF

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Publication number
CN104236483B
CN104236483B CN201410485826.1A CN201410485826A CN104236483B CN 104236483 B CN104236483 B CN 104236483B CN 201410485826 A CN201410485826 A CN 201410485826A CN 104236483 B CN104236483 B CN 104236483B
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China
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guide rail
lathe bed
measurement
measuring
line slideway
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CN104236483A (en
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欧屹
冯虎田
怀乾宏
张怡雯
连宇臣
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LIANYUNGANG SCREWS ROBOT TECHNOLOGY Co.,Ltd.
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ZHANGJIAGANG SIKESI PRECISION MACHINERY TECHNOLOGY Co Ltd
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Abstract

The invention discloses a device and method for measuring the precision and the friction force of a rolling linear guide rail pair. The device is mainly composed of a lathe bed part, a worktable part, a driving part and a measuring part and is characterized in that a motor drives a pin gear to move on a rack in the direction of a lathe bed so that the worktable can be driven, a laser displacement sensor and a force sensor installed on a worktable measuring frame are used for measuring parameters of all positions of the measured guide rail pair supported by a supporting mechanism, relevant data are obtained through analysis, and thus the precision and the friction force of the measured guide rail pair are analyzed. According to the device and method for measuring the precision and the friction force of the rolling linear guide rail pair, loading force does not exist, the driving force is small, rolling linear guide rail pairs of the 35 mm type and the 45 mm type within 3 m can be measured, dynamic measuring is conduced, installation is convenient, the test efficiency is high, and measuring data are true and reliable.

Description

Linear rolling guide precision and friction measurement device and method
Technical field
The invention belongs to machinery precision and friction testing technical field, particularly a kind of linear rolling guide essence Degree and friction measurement device and method.
Background technology
Rolling linear guide has the advantages that simple structure, static and dynamic friction coefficient be little, precision stability is good, in machine driving In play moving component carrying and motion guide effect.When linear rolling guide is applied to lathe, the vibration of slide block will The precision of workpiece to be machined can be affected.Frictional force between guideway can cause guideway to generate heat, and this can directly affect guideway Service life.Linear rolling guide carries out detection tool as a kind of precision optical machinery product to frictional behaviour and kinematic accuracy There is larger engineering significance.With rolling linear guide manufacturing technology improve constantly and application it is more and more extensive, and roll How correctly, quickly dynamic line slideway auxiliary test specification is high, precision and frictional force inspection are carried out to linear rolling guide Survey has become the common difficulty faced in industry.Thus wish to develop a testing stand, it is expected to be applied to national rolling linear The formulation of guideway acceptance criteria, the ranking of precision and frictional behaviour for domestic linear rolling guide and examination are provided With reference to the also development for domestic similar combined test stand provides the experience of preciousness.
At present, domestic research work is concentrated mainly on theoretical research and structural research aspect, to rolling linear guide The research of Aulomatizeted Detect then relatively lags behind.The main manufacturer of domestic several line slideways adopts manual measurement mode, The stability of measurement result depends on the operation level of coroner with accuracy, and efficiency is very low.And static off-line measurement, it is impossible to The multidate information loss of reflection guideway precision in motor process.
The content of the invention
Technical problem solved by the invention is to provide a kind of linear rolling guide precision and friction measurement device And method.
The technical solution for realizing the object of the invention is:A kind of linear rolling guide precision is filled with friction measurement Put, including lathe bed part, worktable part, driver part and measurement part, its medial bed part top arranges a pair of parallel Main guide rail pair, is equipped with worktable part in main guide rail pair, the side above worktable part is equipped with driver part, measurement part bag Rigid measurement bay and tested guide rail bracing frame are included, rigid measurement bay is arranged on worktable part, tested guide rail bracing frame is arranged On lathe bed part;
The worktable part include workbench, lathe bed part include lathe bed, main guide rail pair, limit switch, photoswitch, Beam, long grating, tooth bar and drag chain, the upper surface of lathe bed arranges the supporting guide pair that a pair is parallel to each other, the side of lathe bed Equipped with limit switch and photoswitch, the two ends of lathe bed are respectively arranged with beam, and lathe bed upper surface arranges secondary with main guide rail parallel Long grating, grating reading head and the workbench of the long grating link together, and can move back and forth with workbench, on lathe bed Tooth bar is also set up, the tooth bar is parallel with main guide rail pair, lathe bed top is also provided with the groove parallel with main guide rail parafacies, sets in groove Put drag chain;
The driver part includes gear shaft stool, mangle gear, gear shaft, decelerator and servomotor, gear shaft For propping up whole driver part, the inside of gear shaft stool arranges gear shaft, mangle gear, pin tooth is arranged on gear shaft seat Wheel passes through the mechanical caging device for carrying and gear shaft locking, is provided with what is be engaged with decelerator projecting shaft inside gear shaft upper end Hole, is provided with keyway inside hole, the keyway is engaged with the key on decelerator projecting shaft surface, and one end of decelerator is by key and axle phase Even, the other end connects the output shaft of motor by hole;
Rigid measurement bay is used for measurement data, and four laser displacement sensors are fixed inside the rigid measurement bay, and rigidity is surveyed The both sides of amount frame are respectively provided with a force transducer pinboard, and pulling-pressing force sensing is respectively arranged with each force transducer pinboard Device, the upper surface of tested guide rail bracing frame arranges tested line slideway auxiliary, and the two ends of tested guide rail bracing frame respectively arrange a gear Plate.
A kind of measuring method of the line slideway auxiliary precision based on said apparatus, specifically includes following steps:
While step 1, drive mechanism drive workbench and measurement bay to move to other end by lathe bed one end, laser position Displacement sensor moves to the other end by tested line slideway one end;The long grating installed on lathe bed is used to control the reality of workbench Position, that is, control the physical location of laser displacement sensor;
Step 2, measured using upper and lower two laser displacement sensors guide rail to install bottom surface relative to tested guide rail secondary Slide block top surface parallel misalignment data;
Step 3, parallel misalignment of the reference side relative to slide block side that guide rail is measured using laser displacement sensor Data;
Step 4, control national standardIn franchise, evaluate precision of the line slideway auxiliary etc. Level, so as to complete the measurement of line slideway auxiliary precision.
A kind of measuring method of the linear guide friction force of utilization said apparatus, specifically includes following steps:
Step 1, drive mechanism drive workbench and measurement bay to move to other end by lathe bed one end, on force transducer Push rod promotes the slide block uniform motion on line slideway auxiliary;
Step 2, go out the thrust data equal with linear guide friction force using force sensor measuring;
Step 3, the thrust data to measuring are averaged, so as to measure linear rolling guide rubbing in motor process Power numerical value is wiped, the measurement of linear guide friction force is completed.
Compared with prior art, its remarkable advantage is the present invention:1)The device of the present invention is when measuring, without the need for multiple Bolt is fixed, and is directly placed, and test efficiency is high;2)The present invention adopts the actuating device of mangle gear tooth bar, with high-precision Degree, low noise and low vibration feature, and the high-speed motion of long range can be realized, can preferably meet the service requirement of testing stand; 3)The workbench of the present invention utilizes in the process of walking the fabulous support of rigidity and multiple sensor measurement datas and Treatment Analysis, It is dynamic accuracy measurement, more meets actual condition;4)Metering system is in line with international standards, more advanced;5)The present invention is being tested It is constantly simple to operate, and beneficial to popularization;6)It is anti-in real time by laser displacement sensor, the on-line testing of pulling-pressing force sensor Performance change of the linear rolling guide during precision and friction test is reflected, test data is continuously reliable.
The present invention is described in further detail below in conjunction with the accompanying drawings.
Description of the drawings
Fig. 1 is the population structure component diagram of linear rolling guide precision of the present invention and friction measurement device.
Fig. 2 is the general structure schematic diagram of linear rolling guide precision of the present invention and friction measurement device.
Fig. 3 is linear rolling guide precision of the present invention and friction measurement device lathe bed component diagram.
Fig. 4 is linear rolling guide precision of the present invention and friction measurement device worktable part figure.
Fig. 5 is linear rolling guide precision of the present invention and friction measurement device driver part figure.
Fig. 6 is linear rolling guide precision of the present invention and friction measurement device measurement part figure.
Fig. 7 is linear rolling guide precision of the present invention and friction measurement device accuracy measurement method schematic diagram.
Fig. 8 is that linear rolling guide precision of the present invention is illustrated with friction measurement device friction measurement method.
Specific embodiment
With reference to Fig. 1 and Fig. 2, a kind of linear rolling guide precision and friction measurement device of the present invention, including lathe bed Part I, worktable part II, driver part III and measurement part IV, its top of medial bed part I arranges a pair of parallel dominating Rail pair, is equipped with worktable part II in main guide rail pair, the side of the top of worktable part II is equipped with driver part III, measurement part IV includes rigid measurement bay 13 and tested guide rail bracing frame 21, and rigid measurement bay is arranged on worktable part II, tested guide rail Bracing frame is arranged on lathe bed part I;
With reference to Fig. 3 and Fig. 4, the worktable part II includes workbench 10, and lathe bed part I includes lathe bed 1, main guide rail pair 4th, limit switch 17, photoswitch 18, beam 2, long grating 5, tooth bar 6 and drag chain 3, the upper surface of lathe bed 1 arranges a parafacies Mutual parallel supporting guide pair 4, equipped with limit switch 17 and photoswitch 18, the two ends of lathe bed 1 are respectively arranged with anti-for the side of lathe bed 1 Device 2 is hit, the upper surface of lathe bed 1 is arranged and main guide rail 4 parallel long gratings 5 of pair, grating reading head and the workbench 10 of the long grating Link together, and can move back and forth with workbench 10, tooth bar 6 is also set up on lathe bed 1, the tooth bar 6 is secondary with main guide rail flat OK, the top of lathe bed 1 is also provided with and main guide rail 4 parallel grooves of pair, and drag chain 3 is arranged in groove;
With reference to Fig. 5, the driver part III includes gear shaft stool 7, mangle gear 8, gear shaft 9, decelerator 11 and watches Motor 12 is taken, gear shaft stool 7 is used to prop up whole driver part, and the inside of gear shaft stool 7 arranges gear shaft 9, gear shaft 9 Upper setting mangle gear 8, mangle gear 8 is locked by the mechanical caging device for carrying with gear shaft 9, and gear shaft is provided with inside upper end The hole being engaged with the projecting shaft of decelerator 11, is provided with keyway inside hole, the keyway matches with the key on the projecting shaft surface of decelerator 11 Close, one end of decelerator 11 is connected by key with axle, the other end connects the output shaft of motor 12 by hole;
With reference to Fig. 6, rigid measurement bay 13 is used for measurement data, four laser displacements is fixed inside the rigid measurement bay 13 and is passed Sensor 14, the both sides of rigid measurement bay 13 are respectively provided with a force transducer pinboard 15, on each force transducer pinboard 15 Pulling-pressing force sensor 16 is respectively arranged with, the upper surface of tested guide rail bracing frame 21 arranges tested line slideway auxiliary 20, tested guide rail The two ends of bracing frame 21 respectively arrange a baffle plate 19.
The quantity of the limit switch 17 is two, and two limit switches are located at the two ends of lathe bed side, photoswitch 18 quantity is two, and two photoswitches 18 are located at the two ends of lathe bed side.
Every main guide rail pair 4 includes two slide blocks, and workbench 10 is fixed on the slide block of main guide rail pair 4.
A kind of measuring method of the line slideway auxiliary precision based on said apparatus, specifically includes following steps:
It is other end of same that step 1, drive mechanism III drive workbench 10 and measurement bay 13 to be moved to by the one end of lathe bed 1 When, laser displacement sensor 14 moves to the other end by the one end of tested line slideway 20;The long grating 5 installed on lathe bed 1 is used for The physical location of control workbench 10, that is, control the physical location of laser displacement sensor 14;
Step 2, using upper and lower two laser displacement sensors measure guide rail 20 installation bottom surface relative to tested guide rail pair 20 slide block top surface parallel misalignment data;
Step 3, using laser displacement sensor measure guide rail 20 reference side it is inclined relative to the depth of parallelism of slide block side Difference data;
Step 4, control national standardIn franchise, evaluate precision of the line slideway auxiliary etc. Level, so as to complete the measurement of line slideway auxiliary precision.
A kind of measuring method of the linear guide friction force of utilization said apparatus, specifically includes following steps:
Step 1, drive mechanism III drive workbench 10 and measurement bay 13 to move to other end by the one end of lathe bed 1, and power is passed Push rod on sensor 16 promotes the slide block uniform motion on line slideway auxiliary 20;
Step 2, go out the thrust data equal with the frictional force of line slideway auxiliary 20 using force sensor measuring;
Step 3, the thrust data to measuring are averaged, so as to measure linear rolling guide 20 in motor process Friction value, completes the measurement of linear guide friction force.
The description for more being refined below:
As shown in figure 3, several grooves are provided with lathe bed 1, for installing Locating driver part III and miscellaneous part.Lathe bed 1 18 fot screw mounting grooves are formed around for installing fixation.The side of lathe bed 1 is installed by limit switches 17 and photoswitch 18, it can slide along in the T-slot being provided with of lathe bed 1 side.Long grating 5 is also equipped with lathe bed 1, work is controlled Laser displacement sensor 14 on platform 10 measures the physical location of tested line slideway auxiliary 20;Read head on grating 5 and work Platform 10 links together, and can move back and forth with workbench 10.
As shown in Figure 2, Figure 4 shows, the upper surface of workbench 10 is used for the measurement bay 13 of tested guide rail;Side is used for fixation test platform Drive mechanism III;Lower surface is used to be installed with four slide blocks of supporting guide pair 4.Install in the side of workbench 10 and drive Motivation structure III, when the output of motor 12 drives roller 8 to do straight reciprocating motion on the tooth bar 6 being fixed on lathe bed 1, when tooth bar 6 While transmission 12 driving force of motor, whole drive mechanism III is also driven to advance, because drive mechanism III is fixed on workbench 10 On side, then workbench 10 drives measurement bay 13 also to move along a straight line.
As shown in figure 5, employing the decelerator 11 of APEX AER050-020 type right-angle types in driver part III so that drive Galvanic electricity machine 12 is able to horizontal positioned, and a part for whole drive mechanism III is arranged on workbench 10, and another part is in work The side of platform 10 and the engaged transmission of tooth bar 6 being fixed on lathe bed 1.Gear shaft stool 7 is used to supporting and positioning whole drive Motivation structure III, general shape is cylindrical, there is location-plate thereon, can be attached and adjust between the side of workbench 10. Connect each mechanism inside drive mechanism III by gear shaft 9, the lower part connection mangle gear 8 of axle 9 is carried by gear 8 Mechanical caging device lock with gear shaft 9, the upper end Nei You holes of gear shaft 9 and keyway are engaged with AER decelerators 11.
As shown in fig. 6, the measurement bay 13 of tested line slideway 20 is fixed on the upper surface of workbench 10, measurement bay 13 it is firm Property very well, four laser displacement sensors 14 are fixed in the inside, when workbench 10 is moved, for measuring tested line slideway 20 Upper bottom surface and the depth of parallelism difference of side.Install in the both sides of measurement bay 13 and two pressure formula sensings are connected with by pinboard Device 15, left and right is each one, and effect is that the slide block for promoting tested guide rail 20 runs and measure the frictional force of line slideway auxiliary 20.Quilt Surveying guide rail supporting frame 21 is used to place tested guide rail pair 20, is fixed on lathe bed 1 so that what tested guide rail 20 can be stable puts Put, there is the U-type groove for uniformly hollowing out on its bottom surface, the light for laser displacement sensor 14 can penetrate bracing frame 21, without hindrance What is hindered measures the bottom surface of measurement bay 21 to the distance of the bottom surface of line slideway 20.There is certain changeover mechanism thereon so that measurement type Number line slideway for differing 20 can be in the range ability of laser sensor 14.
As shown in fig. 7, above-mentioned measurement apparatus are to the measuring method of line slideway auxiliary precision:When the band of drive mechanism III is started building When making platform 10 and measurement bay 13 and moving to other end by the one end of lathe bed 1, laser displacement sensor 14 is by tested line slideway 20 One end moves to the other end.Long grating 5 is installed on lathe bed 1, the physical location of workbench 10 is controlled, that is, is controlled laser displacement and is passed The physical location of sensor 14.In measurement process, such as Fig. 7, using upper and lower two laser displacement sensors 14, measures guide rail 20 Slide block top surface parallel misalignment of the bottom surface relative to tested guide rail pair 20 is installed, is sensed using two laser displacements of left side side Device 14, measures the parallel misalignment of the reference side relative to slide block side of guide rail 20, and dynamic multipoint measurement is measured in total length Multi-group data, tries to achieve slide block movement to line slideway bottom surface and the average parallel degree franchise of side benchmark, then compares country's mark It is accurateIn franchise, so as to evaluate the accuracy class of the line slideway auxiliary.
As shown in figure 8, above-mentioned assay device is to the measuring method of linear guide friction force:When drive mechanism III drives When workbench 10 and measurement bay 13 move to other end by the one end of lathe bed 1, measurement bay 13 slides to the right(To left movement in the same manner), Push rod on force transducer 16 promotes the slide block movement on line slideway 20, and when the push rod of sensor 16 pushes slide block uniform rectilinear is During motion, driving forceThe kinetic force of friction secondary equal to tested guide rail.To now the change of sensing element in force transducer 16 be caused, Voltage signal is produced, its numerical value friction value is converted into into through subsequent treatment analysis, so as to measure linear rolling guide 20 in motor process frictional force dynamic value.
From the foregoing, it will be observed that the device of the present invention can test the precision and frictional force of linear rolling guide, kinetic measurement, examination Efficiency high is tested, measurement data is true and reliable.

Claims (5)

1. a kind of linear rolling guide precision and friction measurement device, it is characterised in that including lathe bed part [I], work Platform part [II], driver part [III] and measurement part [IV], its medial bed part [I] top arranges a pair of parallel main guide rail Pair, is equipped with worktable part [II] in main guide rail pair, the side above worktable part [II] is equipped with driver part [III], measurement Part [IV] includes rigid measurement bay [13] and tested guide rail bracing frame [21], and rigid measurement bay is arranged on worktable part [II] On, tested guide rail bracing frame is arranged on lathe bed part [I];
The worktable part [II] includes workbench [10], and lathe bed part [I] includes lathe bed [1], main guide rail pair [4], spacing Switch [17], photoswitch [18], beam [2], long grating [5], tooth bar [6] and drag chain [3], the upper surface of lathe bed [1] sets Supporting guide pair [4] that a pair is parallel to each other is put, the side of lathe bed [1] is equipped with limit switch [17] and photoswitch [18], bed The two ends of body [1] are respectively arranged with beam [2], and lathe bed [1] upper surface arranges the long grating [5] parallel with main guide rail pair [4], the length The grating reading head of grating links together with workbench [10], and can move back and forth with workbench [10], on lathe bed [1] Tooth bar [6] is also set up, the tooth bar [6] is parallel with main guide rail pair, lathe bed [1] top is also provided with parallel with main guide rail pair [4] Drag chain [3] is set in groove, groove;
The driver part [III] includes gear shaft stool [7], mangle gear [8], gear shaft [9], decelerator [11] and servo Motor [12], for propping up whole driver part, the inside of gear shaft stool [7] arranges gear shaft [9] to gear shaft stool [7], Mangle gear [8] is set on gear shaft [9], and mangle gear [8] is locked by the mechanical caging device for carrying with gear shaft [9], tooth The hole being engaged with decelerator [11] projecting shaft is provided with inside wheel shaft upper end, keyway is provided with inside hole, the keyway and decelerator [11] key on projecting shaft surface is engaged, and one end of decelerator [11] is connected by key with decelerator [11] projecting shaft, the other end The output shaft of motor [12] is connected by hole;
Rigid measurement bay [13] fixes four laser displacement sensors for measurement data inside the rigid measurement bay [13] [14], the both sides of rigid measurement bay [13] are respectively provided with a force transducer pinboard [15], each force transducer pinboard [15] pulling-pressing force sensor [16] is respectively arranged with, the upper surface of tested guide rail bracing frame [21] arranges tested line slideway auxiliary [20], the two ends of tested guide rail bracing frame [21] respectively arrange a baffle plate [19].
2. linear rolling guide precision according to claim 1 and friction measurement device, it is characterised in that spacing to open The quantity for closing [17] is two, and two limit switches are located at the two ends of lathe bed side, and the quantity of photoswitch [18] is two, Two ends of two photoswitches [18] positioned at lathe bed side.
3. linear rolling guide precision according to claim 1 and friction measurement device, it is characterised in that per root master Guideway [4] includes two slide blocks, and workbench [10] is fixed on the slide block of main guide rail pair [4].
4. a kind of measuring method of the line slideway auxiliary precision based on claim 1 described device, it is characterised in that specifically include Following steps:
It is other end of that step 1, drive mechanism [III] drive workbench [10] and measurement bay [13] to be moved to by lathe bed [1] one end Meanwhile, laser displacement sensor [14] moves to the other end by tested line slideway auxiliary [20] one end;The length installed on lathe bed [1] Grating [5] controls the physical location of laser displacement sensor [14] for controlling the physical location of workbench [10];
Step 2, the installation bottom surface for measuring line slideway auxiliary [20] using upper and lower two laser displacement sensors are led relative to tested The slide block top surface parallel misalignment data of rail pair [20];
Step 3, using laser displacement sensor measure line slideway auxiliary [20] reference side relative to the parallel of slide block side Degree deviation data;
Franchise in step 4, control national standard JB/T 7175.4-2006, evaluates the accuracy class of the line slideway auxiliary, from And complete the measurement of line slideway auxiliary precision.
5. a kind of measuring method of the linear guide friction force of utilization claim 1 described device, it is characterised in that concrete bag Include following steps:
Step 1, drive mechanism [III] drive workbench [10] and measurement bay [13] to move to other end by lathe bed [1] one end, Push rod on force transducer [16] promotes the slide block uniform motion on line slideway auxiliary [20];
Step 2, go out the thrust data equal with line slideway auxiliary [20] frictional force using force sensor measuring;
Step 3, the thrust data to measuring are averaged, so as to measure linear rolling guide [20] rubbing in motor process Power numerical value is wiped, the measurement of linear guide friction force is completed.
CN201410485826.1A 2014-09-22 2014-09-22 Device and method for measuring precision and friction force of rolling linear guide rail pair Active CN104236483B (en)

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