CN103674504A - Main shaft performance testing platform - Google Patents
Main shaft performance testing platform Download PDFInfo
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- CN103674504A CN103674504A CN201210317303.7A CN201210317303A CN103674504A CN 103674504 A CN103674504 A CN 103674504A CN 201210317303 A CN201210317303 A CN 201210317303A CN 103674504 A CN103674504 A CN 103674504A
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Abstract
The invention discloses a main shaft performance testing platform, and relates to a main shaft performance detecting device of a machine tool. The structure of the main shaft performance testing platform is as follows: a main shaft rigidity measuring module, a main shaft heating thermal deformation measuring module, an output torque measuring module and a belt tension measuring module are respectively arranged on a platform base; a tested main shaft box is mounted on the platform base through a main shaft box mat. The testing platform not only can accurately test such indexes of the main shaft as precision, rigidity, force, dynamic balance and overall performance, but also can simulate the influence on all performances of the main shaft under different assembly conditions to finger out reasonable assembly relationship so as to provide a certain experimental proof to the real production and assembly of the main shaft.
Description
Technical field
The invention relates to a kind of platform for testing performance of main shaft of machine tool, especially a kind ofly can carry out for important performance indexes such as ETC series main shaft precision, rigidity, power, transient equilibrium, combination properties the intensive Testing Platform of height of comprehensive detection.
Background technology
Along with the continuous progress of scientific and technical development and manufacturing technology, also more and more strong as the demand of the numerically-controlled machine of manufacturing industry machine tool.Numerically controlled lathe is one of the technical foundation of equipment manufacture and developing direction, and main shaft is the Core Feature parts in numerically controlled lathe, and its performance has directly determined the correlated performance index of numerically controlled lathe, is the critical component that represents numerical control machine tool technique level.The domestic experience that has a plurality of producers to there are research and development and produce main shaft, the entablement gulf rising sun is safe, general gloomy, and Tai great Deng enterprise just starts the development of main shaft very many years ago, but compares with same kind of products at abroad, and at aspects such as design, processing and assemblings, all there is a certain distance in it.The domestic test of carrying out for main shaft is at present relatively single, mostly is test and the check of precision and quiet rigidity, can not comprehensively to the various aspects of performance of main shaft, evaluate, and according to test result, spindle mounted rationality not assessed.
Summary of the invention
In order to solve the technical matters of above-mentioned existence, the invention provides a kind of can be carried out comprehensively for ETC series main shaft performance, accurately, the main shaft Testing Platform of the evaluation of system.This test platform carries the test platform of multiple surveying instrument and sensor, can evaluate and test the multinomial performance indexs such as ETC series main shaft precision, rigidity, power, transient equilibrium, combination property.
The object of the invention is to adopt following technical scheme to realize: a kind of main shaft Testing Platform, comprise platform base, tested main spindle box, Hydraulic Station, control system, it is characterized in that: main shaft rigidity measurement module, main shaft temperature rise thermal deformation measurement module, output torque measurement module, belt tension measurement module are set respectively on platform base; Tested main spindle box is arranged on platform base by main spindle box pad.
Described platform base is provided with for fixing T-shaped groove, and main shaft rigidity measurement module, main shaft temperature rise thermal deformation measurement module, output torque measurement module, belt tension measurement module are bolted on platform base by T-shaped.
Described main shaft rigidity measurement module consists of L-type measurement bay, LOAD CELLS, adjustment rack, adjustment block, adjustment block is installed in horizontal segment side at L-type measurement bay, in adjustment block, be provided with jackscrew, on vertical section of L-type measurement bay, be provided with several T-shaped grooves, adjustment rack can be fixedly mounted in arbitrary T-shaped groove, fixedly mounts LOAD CELLS on adjustment rack.
Described main shaft temperature rise thermal deformation measurement module comprises L-type measurement bay, adjustment block, link, several laser triangulation instrument, main shaft inspection rod, adjustment block is installed in horizontal segment side at L-type measurement bay, in adjustment block, be provided with jackscrew, on vertical section of L-type measurement bay, be provided with several T-shaped grooves, link is fixed on T-shaped groove, laser triangulation instrument, main shaft inspection rod are placed on link, are equipped with limited block axially and radially on link.
Described output torque measurement module comprises eddy-current brake, torque speed sensor, and eddy-current brake and the torque speed sensor respectively base by are separately fixed on platform base, are respectively equipped with adjusting pad and adjustment block on described base.
Described belt tension measurement module comprises base, and support is fixed on base top, is provided with some T-shaped grooves on support, and round power sensor is fixed in T-shaped groove, and adjustment block is fixed on support by T-shaped groove, is provided with adjusting pad on support.
Also comprise noise-measuring module, described noise measurement module consists of two columns that are used for arranging net and sound intensity probe instrument.
The chuck hub placement force sensor of described tested main spindle box, by regulating oil cylinder to regulate pressure.
On described tested main spindle box, acceleration transducer is installed.
On described tested main spindle box, dynamic balance instrument is installed.
The beneficial effect of the invention: the other adjustment block of installing of measurement bay at main shaft rigidity measurement module, can by the jackscrew in adjustment block, realize adjustment laterally and radially according to headstock, guarantee the accuracy of measuring.Adjustment rack above measurement bay can be adjusted according to main shaft height, is useful on fixing T-shaped groove on measurement bay, and fixing LOAD CELLS on adjustment rack can be measured the quiet rigidity axially and radially of main shaft.
The other same adjustment block of installing of measurement bay in main shaft temperature rise thermal deformation measurement module, can realize adjustment laterally and radially by the jackscrew in adjustment block according to headstock.Rice iridium laser triangulation instrument is fixed on link, and link is fixed by the T-shaped groove on measurement bay.Because the measurement piece range of rice iridium laser triangulation instrument is limited, on link, be equipped with limited block axially and radially, guarantee to measure the useful range of piece.
Eddy-current brake in output torque measurement module and torque speed sensor are all fixed on platform base by corresponding base.Owing in this test, the right alignment of eddy-current brake, torque speed sensor and main spindle box to be measured being had relatively high expectations, so these two instruments are all equipped with adjustment structure.By the bolt on adjusting pad, according to true altitude, position locking, and the adjustment block of both sides can be adjusted direction, thereby guarantee that instrument positions locking in horizontal and vertical direction.
In belt tension measurement module, be provided with adjustment block, be used for adjusting angle, can rotate circular power sensor according to the angle of actual belt and measure, make measurement result more accurate, adjustment block is fixed on support by T-shaped groove, can adjust according to actual height.
Compare with existing principal axe test equipment and method, the detection of the multiple performance index of main shaft that main shaft Testing Platform described in the invention is integrated, can also evaluate the actual usabilities such as efficiency factor of the locking chuck power of main shaft, belt tension, main shaft, content measurement is contained the many aspects such as precision, rigidity, power, transient equilibrium and combination property, can be comprehensive the overall performance of reflection ETC series main shaft.
Instrument gathers correlation test data and carries out data processing by experiment; Add adjustment link simultaneously, investigate the impact of different assembly relations on main shaft performance; Automatic Fitting main shaft precision, rigidity, transient equilibrium as required, vibration, the curves such as temperature rise, noise, reflection ETC series main shaft performance that can be directly perceived, accurate and effective.
This test platform not only can carry out the indexs such as precision, rigidity, power, transient equilibrium and combination property to be tested accurately main shaft, and can also simulate the impact on main shaft various aspects of performance under different assembled conditions, point out rational assembly relation, for the reality of main shaft, produce assembling certain experimental basis is provided.
Accompanying drawing explanation
Fig. 1 is the invention main shaft Testing Platform one-piece construction schematic diagram.
Fig. 2 is the structural representation of main shaft rigidity measurement module.
Fig. 3 is the structural representation of main shaft temperature rise thermal deformation measurement module.
Fig. 4 is the structural representation of output torque measurement module.
Fig. 5 is the structural representation of belt tension measurement module.
Fig. 6 is the constitutional diagram while measuring chuck coupling mechanism force.
Fig. 7 is the constitutional diagram of carrying out transient equilibrium and vibration survey.
Fig. 8 is the fundamental diagram of the invention main shaft Testing Platform.
Embodiment
For a Testing Platform for ETC series main shaft, Fig. 1 can consult in its integral structure layout.Comparatively single for current domestic spindle of numerical control lathe Performance Detection content, the present situation that the performance index that much can exert an influence to main shaft result of use are not carried out dependence test, the invention is integrated platform base I, tested main spindle box II, main shaft rigidity measurement module III, main shaft temperature rise thermal deformation measurement module IV, output torque measurement module V, belt tension measurement module VI, noise measurement module VII, Hydraulic Station VIII, control system IX ingredient.Wherein, platform base I is as the carrier of physical construction, be designed with thereon for fixing T-shaped groove, main shaft rigidity measurement module III, main shaft temperature rise thermal deformation measurement module IV, output torque measurement module V, belt tension measurement module VI are by the T-shaped table top that is bolted to platform base I, tested main spindle box II is fixed on corresponding main spindle box pad, then is bolted on table top by T-shaped.
By control system IX and Hydraulic Station VIII, the electrical system of test platform and hydraulic system are controlled.
Described main shaft rigidity measurement module III: formed by L-type measurement bay 31, LOAD CELLS 32, adjustment rack 33, adjustment block 34, adjustment block 34 is installed in horizontal segment side at L-type measurement bay 31, in adjustment block 34, be provided with jackscrew 35, on vertical section of L-type measurement bay 31, be provided with several T-shaped grooves 36, adjustment rack 33 can be fixedly mounted in arbitrary T-shaped groove 36, fixedly mounts LOAD CELLS 32 on adjustment rack 33.
Described main shaft temperature rise thermal deformation measurement module IV: comprise L-type measurement bay 41, adjustment block 42, link 43, some meters of iridium laser triangulation instrument 44, main shafts inspection rod 45, adjustment block 42 is installed in horizontal segment side at L-type measurement bay 41, in adjustment block 42, be provided with jackscrew 46, on vertical section of L-type measurement bay 41, be provided with several T-shaped grooves 47, link 43 is fixed on T-shaped groove 47, rice iridium laser triangulation instrument 44, main shaft inspection rod 45 are placed on link 43, are equipped with limited block 48 axially and radially on link 43.
Described output torque measurement module V comprises eddy-current brake 51, torque speed sensor 52, eddy-current brake 51 and the torque speed sensor 52 respectively base 53 by are separately fixed in platform base I, are respectively equipped with adjusting pad 54 and adjustment block 55 on base 53.
Described belt tension measurement module VI comprises base 61, support 62, support 62 is fixed on base 61 tops, on support 62, be provided with some T-shaped grooves 63, in the round power sensor 64 of the interior installation of T-shaped groove 63, adjustment block 65, by T-shaped groove 63, be fixed on support 62, on support 62, be provided with adjusting pad 66.
Described noise measurement module VII consists of two columns of arranging net 71 and sound intensity probe instrument 72, and sound intensity probe instrument 72 is arranged in base platform by support.
The angular contact ball bearing that described tested main spindle box II can be installed different pretensions changes pretension; The pretension of adjusting shellfish cap pretension and bearing gland changes bearing rigidity; By test different main case, realize the variation of front and back bearings of main shaft right alignment.
By this test platform, ETC series main shaft is carried out to the test of a plurality of projects of combination property such as noise, vibration, temperature rise, peak power and moment of torsion that comprise conventional main shaft geometric accuracy, the precision of belt pulley root, the static rigidity of the speed conditions of main shaft, main shaft, locking chuck power, belt tension, transient equilibrium and main shaft; In all-round property testing, add adjustment link, investigate the impact of different assembly relations on main shaft combination property; Can show test results intuitively, and evaluate accurately.
The course of work of the invention is as follows:
Before testing, by the adjustment parallels of platform base I bottom, adjust table-surface level, tested ETC main shaft is fixed on main spindle box pad, adjusts motor pad simultaneously, adjusts the relative position of main spindle box and motor.
While carrying out the detection of precision project, consult Fig. 1, when for the main shaft that detects main spindle box II to be measured, periodically axial float, chuck are located beating of end face and the conical surface, main shaft is applied to the axial force of big or small F, with clock gauge 01, vertically touch end face to be measured, make main shaft rotation, measure corresponding max value of error.Measured hole axis diameter run-out time, main shaft inspection rod 45 relative main shaft 90-degree rotations should be reinserted to check, can check four times, get the mean value of four measurements.When measurement belt wheel root is beated, make indicator vertically touch belt wheel root, belt wheel is rotated, measure.Scrambler is surveyed the precision of rotating speed and is measured by Shen gram spot dynamic balance instrument 03.The measured value of above-mentioned every precision can, by importing host computer into after the conversion of A/D card, by interface software be shown after being processed and recorded by internal algorithm.
While carrying out the detection of stiffness term object, by regulating adjustment rack 33 positions to make LOAD CELLS 32 in appropriate location.Utilize the bolt in LOAD CELLS 32 to load main shaft, at tested main shaft, axially, radially apply respectively a plurality of load that varies in size, by the value of LOAD CELLS 32 and clock gauge 01 collection power and distortion, and import host computer into by after A/D card conversion, by internal algorithm, process after simulating rigidity (power-distortion) curve and shown by interface software.
While carrying out the test of transient equilibrium project, consult Fig. 7, adopt test mass method, front-end of spindle face place in main spindle box II to be measured arranges vibration-testing point, setting under rotating speed, utilizing Shen gram spot dynamic balance instrument 03 its vibration velocity of test, obtaining initial vibration speed and phase value, then carry out counterweight, through after counterweight several times, the vibration velocity of main shaft test point is obviously reduced, measuring numerical value can be shown by interface software.
While carrying out the noise testing of combination property project, consult Fig. 1, in main spindle box II to be measured side, suitably two columns 71 of distance placement are arranged net, test noise that can be three-dimensional with sound intensity probe instrument 72, in the transmission of surrounding, is measured the noise of main shaft under each frequency domain.
During vibration-testing, consult Fig. 7, make the speed of mainshaft progressively measure from low speed to high speed main spindle box, response signal adopts acceleration transducer 02 to obtain, and by hyperchannel dynamic signal acquisition analyser record analysis data, measuring numerical value can be shown by interface software.
While carrying out the temperature rise thermal deformation test of combination property project, main shaft inspection rod 45 is directly held on main shaft, in experimentation, with main shaft, rotate, by rice iridium laser triangulation instrument 44 acquisition and recording main shaft inspection rods 45 change in displacement value in an opposite direction, by five rice iridium laser triangulation instrument 44, be divided into X, Y, tri-directions of Z the main shaft inspection rod 45 being arranged on main shaft is measured, detect on the point on main shaft inspection rod 45 because the change in displacement value that main shaft temperature rise causes.
While carrying out the output torque test of combination property project, by eddy-current brake 51 and torque speed sensor 52, base 53, the adjusting pad 54 by is separately fixed in platform base I respectively, adjusts the right alignment that adjusting pad 54 meets eddy-current brake 51, torque speed sensor 52 and tested main shaft.51 pairs of main shafts of eddy-current brake carry out moment of torsion loading, and torque speed sensor 52 records variation and the numerical value of moment of torsion, and measurement result and the efficiency factor calculating can be shown by interface software.
While carrying out the detection of power project, consult Fig. 6, for the detection of locking chuck power, placement force sensor 04 in the middle of chuck 05, by regulating oil cylinder 06 pressure, the variation of measuring chuck coupling mechanism force, pressure transducer 04 records the variation of measurement data.
When belt tension is measured, circular power sensor 64 is rigidly connected on platform base by adjustment block 65 and base 61, support 62, adjustment block 65 can make circular power sensor 64 adjust according to the angle of inclination of belt, makes probe can vertically touch belt surface.Bolt tension force by support 62 upper setting blocks 65 loads, power and distortion that circular power sensor record belt bears.Above-mentioned measurement data can be imported host computer into by A/D card, by internal algorithm, is processed and is simulated endurance curves, after curve, by interface software, is shown.
The principle of work of the invention is consulted Fig. 8, utilize digital control system or industrial computer etc. as host computer, the PLC of usining controls Hydraulic Station as slave computer, after being changed by A/D, the signals such as the power producing in test process, distortion, rotating speed, precision, moment of torsion pass host computer back, by internal algorithm, process indexs such as drawing accurately rational precision, rigidity, power, combination property, and shown by interface software.
Claims (10)
1. a main shaft Testing Platform, comprise platform base, tested main spindle box, Hydraulic Station, control system, it is characterized in that: main shaft rigidity measurement module, main shaft temperature rise thermal deformation measurement module, output torque measurement module, belt tension measurement module are set respectively on platform base; Tested main spindle box is arranged on platform base by main spindle box pad.
2. a kind of main shaft Testing Platform according to claim 1, it is characterized in that: described platform base is provided with for fixing T-shaped groove, and main shaft rigidity measurement module, main shaft temperature rise thermal deformation measurement module, output torque measurement module, belt tension measurement module are bolted on platform base by T-shaped.
3. according to the main shaft Testing Platform described in right 1 or 2, it is characterized in that: described main shaft rigidity measurement module consists of L-type measurement bay, LOAD CELLS, adjustment rack, adjustment block, adjustment block is installed in horizontal segment side at L-type measurement bay, in adjustment block, be provided with jackscrew, on vertical section of L-type measurement bay, be provided with several T-shaped grooves, adjustment rack can be fixedly mounted in arbitrary T-shaped groove, fixedly mounts LOAD CELLS on adjustment rack.
4. according to the main shaft Testing Platform described in right 1 or 2, it is characterized in that: described main shaft temperature rise thermal deformation measurement module comprises L-type measurement bay, adjustment block, link, several laser triangulation instrument, main shaft inspection rod, adjustment block is installed in horizontal segment side at L-type measurement bay, in adjustment block, be provided with jackscrew, on vertical section of L-type measurement bay, be provided with several T-shaped grooves, link is fixed on T-shaped groove, laser triangulation instrument, main shaft inspection rod are placed on link, are equipped with limited block axially and radially on link.
5. according to the main shaft Testing Platform described in right 1 or 2, it is characterized in that: described output torque measurement module comprises eddy-current brake, torque speed sensor, eddy-current brake and the torque speed sensor respectively base by are separately fixed on platform base, are respectively equipped with adjusting pad and adjustment block on described base.
6. according to the main shaft Testing Platform described in right 1 or 2, it is characterized in that: described belt tension measurement module comprises base, support is fixed on base top, on support, be provided with some T-shaped grooves, round power sensor is fixed in T-shaped groove, adjustment block is fixed on support by T-shaped groove, is provided with adjusting pad on support.
7. according to the main shaft Testing Platform described in right 1 or 2, it is characterized in that: also comprise noise-measuring module, described noise measurement module consists of two columns that are used for arranging net and sound intensity probe instrument.
8. main shaft Testing Platform according to claim 1 and 2, is characterized in that: the chuck hub placement force sensor of described tested main spindle box, regulates pressure by adjusting oil cylinder.
9. main shaft Testing Platform according to claim 1 and 2, is characterized in that: described tested main spindle box is installed acceleration transducer.
10. main shaft Testing Platform according to claim 1 and 2, is characterized in that: on described tested main spindle box, dynamic balance instrument is installed.
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| CN106181575A (en) * | 2015-04-29 | 2016-12-07 | 武汉重型机床集团有限公司 | A kind of heavy duty high-speed electric main shaft on-line loaded platform and using method thereof |
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| CN106181575B (en) * | 2015-04-29 | 2018-08-31 | 武汉重型机床集团有限公司 | A kind of heavy duty high-speed electric main shaft on-line loaded platform and its application method |
| CN109605125A (en) * | 2019-02-22 | 2019-04-12 | 宝鸡西力精密机械有限公司 | The program-controlled temperature rise test bench of automatic detection high speed and precision main shaft |
| CN115056036A (en) * | 2022-07-13 | 2022-09-16 | 浙江金火科技实业有限公司 | Spindle box part detection device on numerical control lathe |
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| CN103900439A (en) * | 2014-04-18 | 2014-07-02 | 齐重数控装备股份有限公司 | Device for detecting radial runout of tip of main shaft of tailstock of lathe and axial endplay of main shaft |
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| CN104776987A (en) * | 2015-03-20 | 2015-07-15 | 浙江大学 | Main shaft performance testing platform and testing method of testing platform |
| CN106181575A (en) * | 2015-04-29 | 2016-12-07 | 武汉重型机床集团有限公司 | A kind of heavy duty high-speed electric main shaft on-line loaded platform and using method thereof |
| CN106181575B (en) * | 2015-04-29 | 2018-08-31 | 武汉重型机床集团有限公司 | A kind of heavy duty high-speed electric main shaft on-line loaded platform and its application method |
| CN106840626A (en) * | 2017-01-18 | 2017-06-13 | 北京工研精机股份有限公司 | A kind of integrated form main shaft performance testing equipment |
| CN109605125A (en) * | 2019-02-22 | 2019-04-12 | 宝鸡西力精密机械有限公司 | The program-controlled temperature rise test bench of automatic detection high speed and precision main shaft |
| CN115056036A (en) * | 2022-07-13 | 2022-09-16 | 浙江金火科技实业有限公司 | Spindle box part detection device on numerical control lathe |
| CN115056036B (en) * | 2022-07-13 | 2024-05-07 | 浙江金火科技实业有限公司 | Main spindle box part detection device on numerical control lathe |
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