CN106017959A - Lead screw guide rail reliability testing stand based on electro-hydraulic servo loading - Google Patents
Lead screw guide rail reliability testing stand based on electro-hydraulic servo loading Download PDFInfo
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- CN106017959A CN106017959A CN201610380856.5A CN201610380856A CN106017959A CN 106017959 A CN106017959 A CN 106017959A CN 201610380856 A CN201610380856 A CN 201610380856A CN 106017959 A CN106017959 A CN 106017959A
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- lead screw
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- guide rail
- guide rails
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/414—Structure of the control system, e.g. common controller or multiprocessor systems, interface to servo, programmable interface controller
- G05B19/4147—Structure of the control system, e.g. common controller or multiprocessor systems, interface to servo, programmable interface controller characterised by using a programmable interface controller [PIC]
Abstract
The invention relates to a lead screw guide rail reliability testing stand based on electro-hydraulic servo loading. The lead screw guide rail reliability testing stand comprises a lead screw guide rail part, a load applying part, and an automatic control part. The lead screw guide rail part comprises an upper sliding saddle, a lower sliding saddle, and a lead screw nut pair. Guide rails, which are cooperated with each other, are disposed between the upper sliding saddle and the lower sliding saddle. The upper sliding saddle is provided with a grinding wheel force bearing simulation device, and the lower sliding saddle is fixedly disposed on horizon iron by T-shaped screw threads. The lead screw nut pair is constituted by a lead screw nut and a lead screw, which are in a threaded cooperation. A lead screw is connected with a servo motor by a coupling. The load applying part comprises a base, which is fixedly connected with the horizon iron. The base is provided with a direction adjusting mechanism, and the upper surface of the direction adjusting mechanism is fixedly connected with a left support and a right support by supporting plates. A rotating shaft is fixedly connected between the left support and the right support, and is connected with an electro-hydraulic servo loading device. The automatic control part is connected with the lead screw guide rail part and the load applying part in a communicated manner.
Description
Technical field
The present invention relates to a kind of lead screw guide rails reliability test bench based on electro-hydraulic loading, be primarily adapted for use in grinding-carriage feed system of numerical control grinder reliability field.
Background technology
Numerically control grinder is the machine-tool of equipment manufacture, and its level of development and production capacity directly reflect the comprehensive strength of National Industrial, play vital effect in the national economic development.The performance of grinding machine decides the level of equipment manufacture, and China's numerically control grinder and world advanced person's numerically control grinder also exist bigger gap,
Being mainly reflected in reliability aspect, particularly precision to keep and dependability aspect, feed system is one of critical system affecting numerically control grinder reliability.
Numerically control grinder is used widely in machining manufacturing industry, utilizes numerical control program to control driven by servomotor wheel grinding axle class, plane, curved surface etc..Numerically control grinder is usually last procedure of precision component processing, so the efficiency of the height of the quality of numerically control grinder performance and the reliability precision of processing part and processing has important impact.
Either axle class numerically control grinder, or plane numerical controlled grinding machine and curved surface numerically control grinder all include feed system, the Main Function of feed system is to drive grinding carriage to realize straight-line feed, so the height of feed system reliability will directly affect the machining accuracy of numerically control grinder by lead screw pair under the drive of servomotor.
There is the problems such as leading screw positioning precision is not enough, lead screw pair moment of friction is not enough, leading screw temperature rise is too high, workbench excessive, the damage of components of vibration in feed system in numerically control grinder running, these problems once occur, the part processed is likely to waste product, have a strong impact on production efficiency, result even in serious security incident.
In order to improve the reliability of feed system, it usually needs gather the fault data of this system, propose to improve the measure of feed system reliability further according to fault data.Under routine work load, feed system fault is less, it is thus achieved that the cycle of reliability data is longer, therefore wants to obtain more data and is necessary for carrying out reliability test.
Servomotor rotating speed in feed system is different, grinding force is different, centripetal force is different, so assay device allows for simulating different operating modes, exposes the operating fault of numerically control grinder feed system, and the reliability for assessment numerically control grinder feed system provides data.
At present numerically control grinder test to feed system when design is mainly no-load test, and seldom carry out reliability load test, the reliability basic data causing numerically control grinder feed system is little, and designer cannot the reliability level of accurate evaluation numerically control grinder feed system.
Summary of the invention
In order to overcome the drawbacks described above under prior art, it is an object of the invention to provide a kind of lead screw guide rails reliability test bench based on electro-hydraulic loading, the defect of experimental provision under prior art is solved, it is possible to the real working condition in simulation grinding process carries out dynamic and static loading and gathers the reliability that related data calculates, evaluates numerically control grinder feed system by the design of rational structure.
The technical scheme is that a kind of lead screw guide rails reliability test bench based on electro-hydraulic loading, including lead screw guide rails part, load applying portion and automatically control part, described lead screw guide rails part includes, lower saddle and screw pair, on described, it is provided with, between lower saddle, the guide rail cooperated, described upper saddle is provided with simulation emery wheel stressing device, described lower saddle is fixed on ground black iron by T-bolt, described screw pair is made up of feed screw nut and the leading screw of threaded engagement, described feed screw nut is connected with described upper saddle by feed screw nut seat, described leading screw by bearings in described lower saddle, one end of described leading screw connects servomotor by shaft coupling, described servomotor is connected with described lower saddle；Described load applying portion includes base, electro-hydraulic servo loading device and direction adjustment organization, described base is connected with described Horizon ferropexy, described base is provided with described direction adjustment organization, the upper surface of described direction adjustment organization is fixed with left and right support by gripper shoe, being fixed with rotating shaft between described left and right support, described rotating shaft connects described electro-hydraulic servo loading device；Described automatically control part include switch board and hydraulic power unit, described in automatically control part be connected by communication with described lead screw guide rails part and described load applying portion.
Preferably, cannelure is had in the middle of described rotating shaft, the through hole of multiple correspondence is offered on the slide plate of described electro-hydraulic servo loading device, bolt position in cannelure can be fixed between the two by adjustment thus adjust the setting angle of electro-hydraulic servo loading device and rotating shaft, to be adapted to different loading directions.
Preferably, described rotating shaft is connected with left and right support by expansion sleeve and screw, the two ends of described rotating shaft are round platform, and it is machined with internal thread hole at axle head, the outer wall of described expansion sleeve is provided with axial groove, described expansion sleeve inner ring connection rotating shaft, outer ring contacts the endoporus of left and right support, expansion sleeve is pressed between rotating shaft and left and right support by tightening the bolt coordinated with rotating shaft, thus make rotating shaft and left and right support be connected by frictional force, can arbitrarily regulate the rotating shaft setting angle relative to left and right support.
Preferably, described guide rail is the flat composite guideway of V-, V-type rail oil storage performance is got well and play the guiding role, the good manufacturability of level gauge, the effect supporting and keeping machine tool accuracy can be played, therefore the flat composite guideway of V-can be good at meeting because grinding machine carriage weight and movement velocity are high, thus it requires the condition preferably lubricated so that guide rail is more safe and reliable.
Preferably, described upper saddle is provided with the counterweight for simulating inertia load, and to replace due weight in the middle of the actual courses of processing of grinding carriage such as motor, belt and main shaft, counterbalance mass can be adjusted correspondingly according to the difference of actual condition.
Preferably, described simulation emery wheel stressing device is connected with described upper saddle by bolt, the stress side of described simulation emery wheel stressing device is disc, the outer face of disk is provided with four equally distributed force rods, the end face of described force rod is sphere, and the spherical design of force rod makes to simulate emery wheel stressing device can meet multi-faceted, the stress demand of multi-angle.
Preferably, described direction adjustment organization includes two pairs of orthogonal guide rail mechanisms of moving direction, the guide rail of described guide rail mechanism is rectangular slide guide rail, described guide rail mechanism is additionally provided with the screw pair for regulating displacement, in described screw pair, one end of leading screw is provided with manual adjustment knob so that electro-hydraulic servo loading device can arbitrarily move and be maintained at locking during fixed position in horizontal plane.
nullPreferably，Described electro-hydraulic servo loading device includes hydraulic cylinder、Upper end cover、No. 1 axle、Linear bearing、Pull pressure sensor and displacement transducer，Described hydraulic cylinder is double-piston rod-type hydraulic jack，Two piston rods stretch out from the two ends of described hydraulic cylinder respectively，The upper surface of described hydraulic cylinder has been bolted described upper end cover，Described upper end cover is connected with hydraulic cylinder bracing frame by oscillating bearing，Described No. 1 axle it is fixed with between the upper surface of described upper end cover and described hydraulic cylinder，The axis of described No. 1 axle is parallel with the axis of the upper piston rod of described hydraulic cylinder，The described linear bearing that can slide on No. 1 axle it is set with on described No. 1 axle，One end of described linear bearing and the end of described upper piston rod are connected，The other end connects displacement sensors，The end of the lower piston rod of described hydraulic cylinder is threaded connection one end of described pull pressure sensor，The other end of described pull pressure sensor connects load bar by elastic device，Described elastic device can absorb partial dislocation，The natural frequency of elastic device should be greater than more than the twice of excited frequency，Institute's displacement sensors and described pull pressure sensor are connected by communication with described switch board，The signal detected can be passed to switch board by institute's displacement sensors and described pull pressure sensor，Realize double-closed-loop control.
Preferably, described elastic device is by being connected above plate, lower section connecting plate, sleeve that two structures are identical and the identical bolt of two specifications and nut composition, wherein it is connected above plate identical with lower section connecting board structure, the described plate that is connected above is respectively a rectangular flat plate with lower section connecting plate, its center position is provided with tapped through hole, the both sides of tapped through hole are respectively arranged with a through hole, the external diameter of the sleeve that 2 structures are identical is more than being connected above plate and the diameter of two side through hole on the connecting plate of lower section, the bolt that 2 specifications are identical insert be connected above plate with in the through hole of connecting plate both sides, lower section, on 2 structures identical sleeve set bolt between two connecting plates, last being fixed by the nut that 2 structures are identical the most again is linked together.
Preferably, described hydraulic cylinder is provided with electrohydraulic servo valve, described electrohydraulic servo valve is connected by communication with described hydraulic power unit, described electrohydraulic servo valve can export flow and the pressure of modulation accordingly after accepting analog electrical signal, there is the advantages such as dynamic response is fast, control accuracy is high, length in service life, it is fast that hydraulic power unit controls hydraulic cylinder response speed by electrohydraulic servo valve, and control accuracy is high so that experimental data is more accurately reliable.
Preferably, the outer face of described load bar is the sphere of indent, described load bar and described force rod sphere-contact, it is ensured that load bar in any direction, the arbitrarily angled accuracy of power size and Orientation when loading.
Preferably, described switch board includes upper industrial computer, the next programmable controller PLC and signal conversion module, described upper industrial computer is by signal amplifier and described signal conversion module and institute's displacement sensors, pull pressure sensor and electrohydraulic servo valve are connected by communication, the up direction of described the next programmable controller PLC is connected with described upper industrial computer communication, the down direction of described the next programmable controller PLC is connected to servo-driver and solenoid directional control valve, the outfan of described servo-driver is connected with the power interface of servomotor and encoder interfaces, described solenoid directional control valve is connected with described hydraulic power unit.
Preferably, described switch board is provided with display screen and operating board, with the mode of operation of set device and test parameters, and result of the test can be presented intuitively by display screen by operating board.
The invention have the benefit that
Compared with prior art, lead screw guide rails reliability test bench based on electro-hydraulic loading of the present invention uses hydraulic-driven to load grinder wheel frame, i.e. indirectly drive system is simulated the loading of dynamic and static power load, thus simulate the load that drive system is born in actual grinding process, by installing related sensor, measuring guide rail normal pressure, tilting moment, by guide rail is carried out power loading, its load is converted into the moment of torsion of leading screw.By tested leading screw and guide rail are simulated the reliability test of real working condition, exposing and excite its fault, reliability growth and assessment for product provide basic data；
Lead screw guide rails reliability test bench based on electro-hydraulic loading of the present invention, it is capable of the moment of torsion acted on simulation emery wheel stressing device and the dynamic and static simulation of power, and it is the most adjustable under different operating modes with due weight in the middle of the actual courses of processing of grinding carriage such as simulated machine, belt and main shaft, the amplitude of simulation grinding force and loading frequency and moment size by arranging counterweight；
Lead screw guide rails reliability test bench based on electro-hydraulic loading of the present invention, its load applying portion makes electro-hydraulic servo loading device realize 5DOF flexible by direction adjustment organization and rotating shaft, load bar and force rod can be better contacted with, thus more enough sizes better controling over added load and Impact direction；
Lead screw guide rails reliability test bench based on electro-hydraulic loading of the present invention, its load applying portion is provided with pull pressure sensor and displacement transducer, can detect the size of the analog force of loading in real time, it is achieved monitoring and closed loop control and feedback in real time；It is simultaneously installed with torque sensor and speed probe, also can realize the moment of torsion loaded monitoring in real time and closed loop control, make charger have higher loading accuracy；
Lead screw guide rails reliability test bench based on electro-hydraulic loading of the present invention, grinding carriage lead screw guide rails feed system for different model, only need to change the machine tool functional component of different model and a small amount of transition piece of installing can carry out reliability load test, embody motility and the versatility of this laboratory table.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the control principle block diagram of the present invention；
Fig. 3 is the explosive view of load applying portion of the present invention.
Detailed description of the invention
See Fig. 1-3, the invention discloses a kind of lead screw guide rails reliability test bench based on electro-hydraulic loading, including lead screw guide rails part, load applying portion with automatically control part.
Described lead screw guide rails part includes upper and lower saddle and screw pair, is provided with the guide rail cooperated between described upper and lower saddle, and generally, described guide rail is good for lubrication, steering capability, the flat composite guideway of V-that precision is high.Described upper saddle 6 is provided with the counterweight 7 for simulating inertia load and simulation emery wheel stressing device 8, described simulation emery wheel stressing device is connected with described upper saddle by bolt, the stress side of described simulation emery wheel stressing device is disc, being provided with four equally distributed force rods on the outer face of disk, the end face of described force rod is sphere.Described lower saddle 22 is fixed on ground black iron 3 by T-bolt, described screw pair is made up of feed screw nut and the leading screw of threaded engagement, described feed screw nut is connected with described upper saddle by feed screw nut seat, described leading screw by bearings in described lower saddle, one end of described leading screw connects servomotor 5 by shaft coupling 4, and described servomotor is connected with described lower saddle.
Described load applying portion includes that base 21, described base have four U-lags, is connected with described Horizon ferropexy by T-bolt, can arbitrarily arrange the installation position of described base according to loading direction.Described base is provided with direction adjustment organization, described direction adjustment organization includes two pairs of orthogonal guide rail mechanisms of moving direction, the guide rail of described guide rail mechanism is rectangular slide guide rail, described guide rail mechanism is additionally provided with the screw pair for regulating displacement, in described screw pair, one end of leading screw is provided with manual adjustment knob so that electro-hydraulic servo loading device can arbitrarily move and be maintained at locking during fixed position in horizontal plane.The upper surface of described direction adjustment organization is fixed with left socle 18 and right support 19 by gripper shoe 20, a described left side, rotating shaft 17 it is fixed with between right support, described rotating shaft is by expansion sleeve and screw and a left side, right support is connected, the two ends of described rotating shaft are round platform, and it is machined with internal thread hole at axle head, the outer wall of described expansion sleeve is provided with axial groove, described expansion sleeve inner ring connection rotating shaft, a contact left side, outer ring, the endoporus of right support, by tightening the bolt coordinated with rotating shaft, expansion sleeve is pressed into rotating shaft and a left side, between right support, thus make rotating shaft and a left side by frictional force, right support is connected, can arbitrarily regulate rotating shaft relative to a left side, the setting angle of right support.Described rotating shaft is also associated with electro-hydraulic servo loading device, cannelure is had in the middle of described rotating shaft, the through hole of multiple correspondence is offered on the slide plate 16 of described electro-hydraulic servo loading device, bolt position in cannelure can be fixed between the two by adjustment thus adjust the setting angle of electro-hydraulic servo loading device and rotating shaft, to be adapted to different loading directions.nullDescribed electro-hydraulic servo loading device includes hydraulic cylinder 13，Described hydraulic cylinder is double-piston rod-type hydraulic jack and is provided with the electrohydraulic servo valve 12 being connected by communication with hydraulic power unit，Two piston rods stretch out from the two ends of described hydraulic cylinder respectively，The upper surface of described hydraulic cylinder has been bolted upper end cover，Described upper end cover is connected with hydraulic cylinder bracing frame 15 by oscillating bearing 14，No. 1 axle it is fixed with between the upper surface of described upper end cover and described hydraulic cylinder，The axis of described No. 1 axle is parallel with the axis of the upper piston rod of described hydraulic cylinder，The linear bearing that can slide on No. 1 axle it is set with on described No. 1 axle，One end of described linear bearing and the end of described upper piston rod are connected，The other end connects displacement transducer，The end of the lower piston rod of described hydraulic cylinder is threaded connection one end of pull pressure sensor 11，The other end of described pull pressure sensor connects load bar 9 by elastic device 10，The outer face of described load bar is the sphere of indent，Described load bar and described force rod sphere-contact.Described elastic device is by being connected above plate, lower section connecting plate, sleeve that two structures are identical and the identical bolt of two specifications and nut composition, wherein it is connected above plate identical with lower section connecting board structure, the described plate that is connected above is respectively a rectangular flat plate with lower section connecting plate, its center position is provided with tapped through hole, the both sides of tapped through hole are respectively arranged with a through hole, the external diameter of the sleeve that 2 structures are identical is more than being connected above plate and the diameter of two side through hole on the connecting plate of lower section, the bolt that 2 specifications are identical insert be connected above plate with in the through hole of connecting plate both sides, lower section, on 2 structures identical sleeve set bolt between two connecting plates, last being fixed by the nut that 2 structures are identical the most again is linked together.
nullThe described part that automatically controls includes switch board 2 and hydraulic power unit 1，Described switch board includes upper industrial computer、The next programmable controller PLC and signal conversion module，Described signal conversion module includes D/A card and A/D card，Described upper industrial computer is by signal amplifier and described signal conversion module and institute's displacement sensors、Pull pressure sensor and electrohydraulic servo valve are connected by communication，The up direction of described the next programmable controller PLC is connected with described upper industrial computer communication，The down direction of described the next programmable controller PLC is connected to servo-driver and solenoid directional control valve，The outfan of described servo-driver is connected with the power interface of servomotor and encoder interfaces，Described solenoid directional control valve is connected with described hydraulic power unit，Described switch board is additionally provided with display screen and operating board，Can be with the mode of operation of set device and test parameters by operating board，And by display screen, result of the test is presented intuitively.
See the flow chart of Fig. 2, when tested lead screw guide rails is carried out reliability test, first according to dynamic, the size of static cutting force and direction, adjust position and the angle of electro-hydraulic servo loading device, the axis enabling load bar is registered to simulate on the sphere of emery wheel stressing device, then the VB at switch board controls selected certain parameter on interface, upper industrial computer is made to carry out communication by RS-232C port and programmable controller PLC, programmable controller PLC passes through servo driver drives servomotor, obtain signal by torque sensor and speed probe simultaneously, and signal is returned to upper industrial computer by signal amplifier and A/D card, realize closed loop control.The true grinding machining working condition simultaneously simulated as required, by operating board, loading force is set, frequency of vibration, Loaded contact analysis, load time, load the parameters such as moment of torsion and rotating speed, after on-test, PLC control servomotor makes saddle sky enter and work is entered, upper industrial computer is received and is loaded simulation emery wheel stressing device by electrohydraulic servo valve control hydraulic cylinder after loading feedback signal, load is made indirectly to be added in lead screw guide rails, simultaneously, the signal detected is returned to upper industrial computer by signal amplifier and A/D card by the displacement transducer and the pull pressure sensor that are associated with hydraulic cylinder, realize double-closed-loop control.After loading procedure terminates, electrohydraulic servo valve controls the piston rod of hydraulic cylinder and retracts, and upper industrial computer continues to control the motion of driven by servomotor lead screw guide rails, and under the automatically controlling and detect of upper industrial computer, the circulation of whole process of the test is the most constantly carried out.
Enforcement described in patent of the present invention be for the ease of these those skilled in the art it will be appreciated that and application the present invention, the present invention is the embodiment of a kind of optimization, the most concrete a kind of technical scheme in other words conj.or perhaps, it is only applicable to a range of different model, various sizes of grinding carriage lead screw guide rails carries out reliability test, different model outside scope, the reliability test of various sizes of lead screw guide rails, basic technical scheme is constant, but the specifications and models of parts used by it will change therewith, such as pull pressure sensor, leading screw bearing and other standard component.Therefore patent of the present invention is not limited to implement the description of this kind of more specific technical scheme.If relevant technical staff makes in the case of adhering to patent basic technical scheme of the present invention and needs not move through the equivalent structure change of creative work or various amendment is the most within the scope of the present invention.
Claims (10)
1. a lead screw guide rails reliability test bench based on electro-hydraulic loading, it is characterized in that including lead screw guide rails part, load applying portion and automatically control part, described lead screw guide rails part includes, lower saddle and screw pair, on described, it is provided with, between lower saddle, the guide rail cooperated, described upper saddle is provided with simulation emery wheel stressing device, described lower saddle is fixed on ground black iron by T-bolt, described screw pair is made up of feed screw nut and the leading screw of threaded engagement, described feed screw nut is connected with described upper saddle by feed screw nut seat, described leading screw by bearings in described lower saddle, one end of described leading screw connects servomotor by shaft coupling, described servomotor is connected with described lower saddle；Described load applying portion includes base, electro-hydraulic servo loading device and direction adjustment organization, described base is connected with described Horizon ferropexy, described base is provided with described direction adjustment organization, the upper surface of described direction adjustment organization is fixed with left and right support by gripper shoe, being fixed with rotating shaft between described left and right support, described rotating shaft connects described electro-hydraulic servo loading device；Described automatically control part include switch board and hydraulic power unit, described in automatically control part be connected by communication with described lead screw guide rails part and described load applying portion.
2. lead screw guide rails reliability test bench based on electro-hydraulic loading as claimed in claim 1, it is characterised in that described guide rail is the flat composite guideway of V-.
3. lead screw guide rails reliability test bench based on electro-hydraulic loading as claimed in claim 2, it is characterised in that described upper saddle is provided with the counterweight for simulating inertia load.
4. lead screw guide rails reliability test bench based on electro-hydraulic loading as claimed in claim 3, it is characterized in that described simulation emery wheel stressing device is connected with described upper saddle by bolt, the stress side of described simulation emery wheel stressing device is disc, being provided with four equally distributed force rods on the outer face of disk, the end face of described force rod is sphere.
5. lead screw guide rails reliability test bench based on electro-hydraulic loading as claimed in claim 4, it is characterized in that described direction adjustment organization includes two pairs of orthogonal guide rail mechanisms of moving direction, the guide rail of described guide rail mechanism is rectangular slide guide rail, described guide rail mechanism is additionally provided with the screw pair for regulating displacement, and in described screw pair, one end of leading screw is provided with manual adjustment knob.
null6. lead screw guide rails reliability test bench based on electro-hydraulic loading as claimed in claim 5，It is characterized in that described electro-hydraulic servo loading device includes hydraulic cylinder、Upper end cover、No. 1 axle、Linear bearing、Pull pressure sensor and displacement transducer，Described hydraulic cylinder is double-piston rod-type hydraulic jack，Two piston rods stretch out from the two ends of described hydraulic cylinder respectively，The upper surface of described hydraulic cylinder has been bolted described upper end cover，Described upper end cover is connected with hydraulic cylinder bracing frame by oscillating bearing，Described No. 1 axle it is fixed with between the upper surface of described upper end cover and described hydraulic cylinder，The axis of described No. 1 axle is parallel with the axis of the upper piston rod of described hydraulic cylinder，The described linear bearing that can slide on No. 1 axle it is set with on described No. 1 axle，One end of described linear bearing and the end of described upper piston rod are connected，The other end connects displacement sensors，The end of the lower piston rod of described hydraulic cylinder is threaded connection one end of described pull pressure sensor，The other end of described pull pressure sensor connects load bar by elastic device，Institute's displacement sensors and described pull pressure sensor are connected by communication with described switch board.
7. lead screw guide rails reliability test bench based on electro-hydraulic loading as claimed in claim 6, it is characterised in that described hydraulic cylinder is provided with electrohydraulic servo valve, and described electrohydraulic servo valve is connected by communication with described hydraulic power unit.
8. lead screw guide rails reliability test bench based on electro-hydraulic loading as claimed in claim 7, it is characterised in that the outer face of described load bar is the sphere of indent, described load bar and described force rod sphere-contact.
9. lead screw guide rails reliability test bench based on electro-hydraulic loading as claimed in claim 8, it is characterized in that described switch board includes upper industrial computer, the next programmable controller PLC and signal conversion module, described upper industrial computer is by signal amplifier and described signal conversion module and institute's displacement sensors, pull pressure sensor and electrohydraulic servo valve are connected by communication, the up direction of described the next programmable controller PLC is connected with described upper industrial computer communication, the down direction of described the next programmable controller PLC is connected to servo-driver and solenoid directional control valve, the outfan of described servo-driver is connected with the power interface of servomotor and encoder interfaces, described solenoid directional control valve is connected with described hydraulic power unit.
10. lead screw guide rails reliability test bench based on electro-hydraulic loading as claimed in claim 9, it is characterised in that described switch board is provided with display screen and operating board.
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| CN106338969A (en) * | 2016-10-21 | 2017-01-18 | 吉林大学 | Reliability test apparatus and test method for electro-hydraulic servo feeding system |
| CN108398282A (en) * | 2018-05-31 | 2018-08-14 | 吉林大学 | Servo oscillating feed system reliability test and test method |
| CN108880140A (en) * | 2018-08-15 | 2018-11-23 | 湘潭顺程科技有限公司 | A kind of assembly machine of motor stator and rotor |
| CN109187243A (en) * | 2018-10-30 | 2019-01-11 | 万向钱潮股份有限公司 | A kind of fatigue test guiding device |
| CN110307976A (en) * | 2019-08-07 | 2019-10-08 | 烟台中宇航空液压有限公司 | Electro-hydraulic servo feed system reliability test |
| CN111157386A (en) * | 2020-01-17 | 2020-05-15 | 东华大学 | Variable-load contact lubrication abrasion integrated testing machine |
| CN112857852A (en) * | 2021-02-09 | 2021-05-28 | 吉林大学 | Reliability test bed and test method based on mixed loading numerical control machine tool feeding system |
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