CN105486603A - Testing device for micro-amplitude wear of impact and tangential combined motion - Google Patents

Testing device for micro-amplitude wear of impact and tangential combined motion Download PDF

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Publication number
CN105486603A
CN105486603A CN201610041396.3A CN201610041396A CN105486603A CN 105486603 A CN105486603 A CN 105486603A CN 201610041396 A CN201610041396 A CN 201610041396A CN 105486603 A CN105486603 A CN 105486603A
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CN
China
Prior art keywords
motor
bar
packoff
straight
tangential
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CN201610041396.3A
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Chinese (zh)
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CN105486603B (en
Inventor
朱旻昊
蔡振兵
陈志强
林映武
彭金方
周仲荣
钱浩
谢永诚
李晨
林绍萱
徐雪莲
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西南交通大学
上海核工程研究设计院
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Publication of CN105486603A publication Critical patent/CN105486603A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/56Investigating resistance to wear or abrasion
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02Details

Abstract

The invention discloses a testing device for micro-amplitude wear of impact and tangential combined motion. The testing device comprises a rack and a sealing device arranged on the rack, wherein a first motor located above the sealing device is arranged on the rack, a first pressure sensor and a first straight bar used for mounting a sample fixture are sequentially connected onto the first motor, and the bottom end of the first straight bar extends into the sealing device; a second motor located on one side of the sealing device is further arranged on the rack, a second pressure sensor and a second straight bar are sequentially connected onto the second motor, and one end, far away from the second pressure sensor, of the second straight bar extends into the sealing device; a tangential motion device connected with the second straight bar is arranged in the sealing device. The testing device for the micro-amplitude wear of the impact and tangential combined motion adopts an impact/tangential coupled motion mode to realize combined wear of impact wear and tangential wear.

Description

A kind of impact/tangential compound motion abrasion test device a little
Technical field
The present invention relates to fretting wear test unit, be specifically related to a kind of multi-functional test unit worn and torn a little carrying out compound motion from both direction.
Background technology
Impact wear be hesitate repeatedly between two solid surface dynamic Contact, clash into the surface damage that causes.In all kinds of machinery, many parts all subject impact wear in various degree, and the component of machine inefficacy caused by impact fretting wear is extensively present in the fields such as electric power, petrochemical industry, mining machinery, ocean machinery, Aero-Space, from bringing larger energy dissipation, bring huge loss to people's property safety and national economy.Shock load can cause surface in contact to destroy, and component of machine will be caused time serious to lose efficacy.In the type of wear out failure, impact wear may be the most unfavorable to material, understand minimum class wearing and tearing.In order to study this wearing and tearing, up to the present, eurypalynous testing machine has been developed both at home and abroad.
In actual condition, component structural not only only by the impulsive force in a direction, simultaneously also can because of tangential small motion unstable wear process.At present, existing impact wear testing machine automaticity is low, the general impulsive force just applying single direction, and most impact wear is a multi-direction Coupling Damage process, and therefore, existing such device comprehensively can not study impact wear behavior.In addition, in actual condition, the Service Environment of parts is complicated, and as high temperature, high pressure and vacuum environment etc., and the test condition of existing testing machine is effective.
Summary of the invention
In order to improve the problems referred to above, the invention provides a kind of abrasion test device a little realizing impact/tangential compound motion.
To achieve these goals, the technical solution used in the present invention is as follows:
A kind of impact/tangential compound motion abrasion test device a little, comprises frame, is arranged at the packoff in frame; Described frame is provided with the first motor be positioned at above packoff, and described first motor connects successively the first pressure transducer and the first straight-bar for installing specimen holder, the bottom of described first straight-bar is stretched in packoff; Described frame is also provided with the second motor being positioned at packoff side, described second motor is connected with the second pressure transducer, the second straight-bar in turn, described second straight-bar stretches in packoff away from one end of the second pressure transducer; The tangential motion device contacted with the second straight-bar is provided with in described packoff.
Particularly, described first motor and the second motor all adopt voice coil motor.
Particularly, described first straight-bar and the second straight-bar are cylindric.
Particularly, described tangential motion device comprises two line slideways be arranged at bottom packoff, to be arranged at above line slideway and can the fixture mounting seat of relative rectilinear slide, and to be arranged at the water receptacle be connected above fixture mounting seat and with fixture mounting seat; Described second straight-bar contacts with fixture mounting seat side.
Particularly, described fixture mounting seat is also provided with through hole, and this through hole is for installing heating rod.
Particularly, described fixture mounting seat is connected with line slideway by slide block.
Particularly, damping drift is also provided with between described first motor and the first pressure transducer.
Particularly, described frame is also provided with the jacking gear of control first motor lifting.
Particularly, described jacking gear comprises the servomotor be fixed in frame, the ripple shaft coupling be connected with servomotor, the ball wire bar pair be connected with ripple shaft coupling, and two the craspedodrome guide rails be arranged in frame, described first motor is slidably connected on two craspedodrome guide rails by the first motor mounting plate; Described first motor mounting plate is also connected with ball wire bar pair.
Particularly, described servomotor is installed in frame by servomotor fixed head.
Particularly, described ball screw assembly, is made up of nut and screw mandrel; Described leading screw is connected with ripple shaft coupling by two-way bearing, and described two-way bearing is connected with frame by bearing fixed seat; Described nut is connected with the first motor mounting plate by nut holder.
Particularly, described packoff top is provided with the first motive seal flange passed for the first straight-bar, and described packoff sidewall is provided with the second motive seal flange passed for the second straight-bar.
Particularly, described packoff top is also provided with the ring flange passed for the first right cylinder straight-bar.
Particularly, described packoff comprises seal box, and is installed on othermohygrometer table, the first air valve, the second air valve on seal box.
Particularly, described seal box side is provided with opening, is provided with sealed container door, and is also provided with rubber ring at opening part at opening part, and its effect improves the sealing effectiveness between sealed container door and seal box.Described sealed container door is also provided with view window.The locking of described sealed container door adopts typical handwheel lead screw device.
Principle of the present invention: drive two straight-bars stretching into packoff to do the ballistic motion of vertical direction and the tangential motion of horizontal direction respectively by two motors, realizes punching-Qie coupled motions.In test, impulsive force can be controlled in 1 ~ 300 newton, and the most I of tangential to-and-fro movement amplitude reaches 5 μm.Both direction running frequency can reach more than 50Hz.
The present invention compared with prior art, has the following advantages and beneficial effect:
The present invention adopts the mode of motion of punching-Qie coupling to realize the combined type wearing and tearing of impact wear and tangential wearing and tearing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is front elevation of the present invention.
Fig. 3 is side view of the present invention.
Fig. 4 is the structural representation of jacking gear in the present invention.
Fig. 5 is the structural representation of tangential motion device in the present invention.
Wherein, mark corresponding parts name in accompanying drawing to be called: 1-servomotor, 2-servomotor fixed head, 3-damping drift, 4-first motor mounting plate, 5-first pressure transducer, 6-first straight-bar, 7-othermohygrometer table, 8-seal box, 9-second motor, 10-second straight-bar, 11-second motive seal flange, 12-handwheel, 13-first motive seal flange, 14-view window, 15-sealed container door, 16-first air valve, 17-second air valve, 18-ring flange, 19-first motor, 20-frame, 21-second pressure transducer, 22-rubber ring, 23-ripple shaft coupling, 24-craspedodrome track, 25-bearing fixed seat, 26-nut, 27-nut holder, 28-screw mandrel, 29-water receptacle, 30-fixture mounting seat, 31-through hole, 32-line slideway.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described, and embodiments of the present invention include but not limited to the following example.
Embodiment
As shown in Fig. 1 ~ 5, a kind of impact/tangential compound motion abrasion test device a little, comprises frame 20, is arranged at the packoff in frame; Described frame is provided with the first motor 19 be positioned at above packoff, and described first motor connects successively the first pressure transducer 5 and the first straight-bar 6 for installing specimen holder, the bottom of described first straight-bar is stretched in packoff; Described frame is also provided with the second motor 9 being positioned at packoff side, described second motor is connected with the second pressure transducer 21 and the second straight-bar 10 in turn, described second straight-bar stretches in packoff away from one end of the second pressure transducer; The tangential motion device be connected with the second straight-bar is provided with in described packoff.
Preferred as one, described frame is " L " type, and described packoff and the second motor are arranged on the transverse plate of frame, and described first motor is arranged in the vertical plate of frame.And frame adopts ductile cast iron integral cast, intensity is high, thus the dimensional stability under high-frequency test can be ensured in optimal damper performance and wide temperature range.
Particularly, when reality uses, can adopt electric machine control system control the first motor and the second motor loading frequency, load amplitude and loading curve type; First pressure transducer and the second pressure transducer are measured impulsive force and tangential friction force respectively, the simulated data that the present invention adopts acquisition system to collect the first pressure transducer and the second pressure transducer to gather.
In actual production process, the first pressure transducer and the first straight-bar adopt and are threaded, and the second pressure transducer and the second straight-bar adopt and be threaded, and arrange like this and can be easy for installation and removal.Preferred as one, the first straight-bar and the second straight-bar adopt columned straight-bar.
In order to installation and removal first straight-bar that can be convenient, rectangle can be processed in the bottom of the first straight-bar, be convenient to nut wrench clamping dismounting or install.
In order to specimen holder is arranged on the first straight-bar by convenient, so be provided with internal thread in the first straight-bar bottom, such installing/dismounting specimen holder and convenience thereof.
In order to reduce the distortion of the second straight-bar in tangential motion process, the second straight-bar adopts plow-steel manufacture to form.
During use, the present invention drives two straight-bars stretching into packoff to do the ballistic motion of vertical direction and the tangential motion of horizontal direction by the first motor and the second motor respectively, realizes punching-Qie coupled motions.
Preferred as one, described first motor and the second motor all adopt voice coil motor, have high frequency sound, high-precision feature, can better realize punching-coupling and cut coupled motions.First pressure transducer and the second pressure transducer adopt pcb pressure transducer, its frequency acquisition and precision high, the accuracy of data of the present invention can be improved further.
Particularly, described tangential motion device comprises two line slideways 32 be arranged at bottom packoff, to be arranged at above line slideway and can the fixture mounting seat 30 of relative rectilinear slide, and to be arranged at the water receptacle 29 be connected above fixture mounting seat and with fixture mounting seat; Described second straight-bar contacts with fixture mounting seat side.Wherein, fixture mounting seat is connected with line slideway by slide block, and slide block can in the cofree slip of rectilinear orbit, thus can realize whole fixture mounting seat and water receptacle slides in packoff.
As a kind of optimal way, described fixture mounting seat is also provided with through hole 31.Described through hole number can be arranged according to actual conditions, is mainly used in installing heating rod, thus realizes heating up to seal box, to meet working condition requirement.
Affect the measurement of corresponding pressure transducer to reduce inertial force, fixture mounting seat and water receptacle all adopt light material manufacture, and preferred as one, the present invention adopts aluminium alloy to be made.
As a kind of optimal way, between described first motor and the first pressure transducer, be also provided with damping drift 3.This damping drift is made up of the assembly such as spring and sleeve, and its effect is to prevent rigid shock power to the damage of the first motor, in addition, can also realize constant impingement power.
As a kind of optimal way, described frame is also provided with the jacking gear of control first motor lifting.This jacking gear can realize the lifting of the first motor, namely can realize the lifting of the first straight-bar, by arranging this jacking gear, when installing specimen holder, first straight-bar upwards can be mentioned a part, specimen holder is arranged on after on the first straight-bar, then the first straight-bar is moved downward to desired location, can start afterwards to test, easy to operate.
Jacking gear of the present invention can adopt hydraulic cylinder or pneumatic linear actuator, specifically then, frame is fixed a hydraulic cylinder or pneumatic linear actuator, and by hydraulic cylinder and pneumatic linear actuator piston rod be connected with the first motor, thus promote the first motor and rise, decline.Certainly also can adopt other existing jacking gears, if its can realize the first motor rising, decline.
But the invention provides a kind of optimal way of jacking gear, structure is as follows particularly:
Described jacking gear comprises the servomotor 1 be fixed in frame, the ripple shaft coupling 23 be connected with servomotor, the ball wire bar pair be connected with ripple shaft coupling, and two the craspedodrome guide rails 24 be arranged in frame, described first motor is slidably connected on two craspedodrome guide rails by the first motor mounting plate 4; Described first motor mounting plate is also connected with ball wire bar pair.
Wherein, described servomotor is installed in frame by servomotor fixed head 2.
The present invention realizes lifting and the decline of the first motor by ball screw assembly, and is provided with craspedodrome guide rail, by arranging craspedodrome guide rail, can reduce frictional resistance, thus makes the first motor can realize easily rising, declining.
As a kind of optimal way, described ball screw assembly, is made up of nut 15 and screw mandrel 28; Described leading screw is connected with ripple shaft coupling by two-way bearing, and described two-way bearing is connected with frame by bearing fixed seat 25; Described nut is connected with the first motor mounting plate by nut holder 27.Wherein, the principle of work of ball screw assembly, is, servomotor rotational movement leading screw rotates the rising or the decline rectilinear motion that are then converted into the nut of ball screw assembly, because nut is connected with the first motor mounting plate, just drive the first motor mounting plate to rise thereupon, decline, finally realize the lifting of the first motor.
Worth explanation is, leading screw of the present invention is connected with ripple shaft coupling by two-way bearing, can effectively prevent from backwashing, thus better realize lifting of the present invention.And two-way bearing of the present invention be rigidity preload two-way bearing.
As a kind of optimal way, described packoff top is provided with the first motive seal flange 13 passed for the first straight-bar, and described packoff sidewall is provided with the second motive seal flange 12 passed for the second straight-bar.First straight-bar and the second straight-bar extend in packoff by corresponding motive seal flange, linear reciprocating motion a little can not only be made in motive seal flange, and the sealing of junction can be ensured, thus can guarantee that the environment pre-set in packoff is not changed.
As a kind of optimal way, described packoff top is also provided with the ring flange 18 passed for the first right cylinder straight-bar.Wherein, a straight line flange bearing being installed in this ring flange, by arranging this ring flange, can effectively preventing in punching-Qie coupling test, because the existence of tangential force causes damage to the first pressure transducer.
As a kind of optimal way, described packoff comprises seal box 8, and is installed on othermohygrometer table 7, the first air valve 16, second air valve 17 on seal box.By arranging said apparatus, the requirement of experiment under different operating mode can be realized, such as: high temperature, high pressure, vacuum, humidity, aqueous medium and gas with various environment etc.
As a kind of optimal way, described seal box side is provided with opening, is provided with sealed container door 15 at opening part, and is also provided with rubber ring 22 at opening part, and its effect improves the sealing effectiveness between sealed container door and seal box.Described sealed container door is also provided with view window 14, and this view window is made by high-pressure glass.The locking of described sealed container door adopts typical handwheel 12 lead screw device.For meeting high pressure and vacuum environment, seal box adopts plow-steel to make and forms, and its wall thickness dimension is as far as possible large, if needed can at its outside surface welding reinforcement.
Optimal case of the present invention is then all combined by above-mentioned preferred version, but the test implementation process of final solution is as follows: before installation specimen holder, rotate forward by controlling servomotor, jacking gear is risen to certain altitude, thus realize the first motor lifting to certain altitude, then specimen holder is arranged on the first straight-bar bottom, specimen holder is positioned at seal box inside simultaneously, control servomotor reverse rotation subsequently, first motor is dropped to predetermined altitude, close and lock sealing chamber door, can heat up according to actual requirement, vacuumize, the process such as supercharging or filling atmosphere.After all are ready to, control the impulsive force of the first motor, the motion amplitude of frequency and amplitude and the second motor and frequency according to testing requirements, carry out impacting/tangential Compound Fretting Wear test.What deserves to be explained is, in process of the test, gather tangential friction force by the second pressure transducer.
According to above-described embodiment, just the present invention can be realized well.What deserves to be explained is; under prerequisite based on said structure design, for solving same technical matters, even if some making on the invention are without substantial change or polishing; the essence of the technical scheme adopted is still the same with the present invention, therefore it also should in protection scope of the present invention.

Claims (10)

1. impact/tangential compound motion an abrasion test device a little, it is characterized in that, comprise frame (20), be arranged at the packoff in frame; Described frame is provided with the first motor (19) be positioned at above packoff, and described first motor connects successively the first pressure transducer (5) and the first straight-bar (6) for installing specimen holder, the bottom of described first straight-bar is stretched in packoff; Described frame is also provided with the second motor (9) being positioned at packoff side, described second motor is connected with the second pressure transducer (21) and the second straight-bar (10) in turn, described second straight-bar stretches in packoff away from one end of the second pressure transducer; The tangential motion device be connected with the second straight-bar is provided with in described packoff.
2. one according to claim 1 impacts/tangential compound motion abrasion test device a little, it is characterized in that, described tangential motion device comprises two line slideways (32) be arranged at bottom packoff, to be arranged at above line slideway and can the fixture mounting seat (30) of relative rectilinear slide, and to be arranged at the water receptacle (29) be connected above fixture mounting seat and with fixture mounting seat; Described second straight-bar contacts with fixture mounting seat side.
3. one according to claim 1 impacts/tangential compound motion abrasion test device a little, it is characterized in that, is also provided with damping drift (3) between described first motor and the first pressure transducer.
4. one according to claim 1 impacts/tangential compound motion abrasion test device a little, it is characterized in that, described frame is also provided with the jacking gear of control first motor lifting.
5. one according to claim 4 impacts/tangential compound motion abrasion test device a little, it is characterized in that, described jacking gear comprises the servomotor (1) be fixed in frame, the ripple shaft coupling (23) be connected with servomotor, the ball wire bar pair be connected with ripple shaft coupling, and two the craspedodrome guide rails (24) be arranged in frame, described first motor is slidably connected on two craspedodrome guide rails by the first motor mounting plate (4); Described first motor mounting plate is also connected with ball wire bar pair.
6. one according to claim 5 impacts/tangential compound motion abrasion test device a little, and it is characterized in that, described ball screw assembly, is made up of nut (15) and screw mandrel (28); Described leading screw is connected with ripple shaft coupling by two-way bearing, and described two-way bearing is connected with frame by bearing fixed seat (25); Described nut is connected with the first motor mounting plate by nut holder (27).
7. one according to claim 1 impacts/tangential compound motion abrasion test device a little, it is characterized in that, described packoff top is provided with the first motive seal flange (13) passed for the first straight-bar, and described packoff sidewall is provided with the second motive seal flange (12) passed for the second straight-bar.
8. one according to claim 1 impacts/tangential compound motion abrasion test device a little, and it is characterized in that, described packoff top is also provided with the ring flange (18) passed for the first right cylinder straight-bar.
9. one according to claim 1 impacts/tangential compound motion abrasion test device a little, it is characterized in that, described packoff comprises seal box (8), and is installed on othermohygrometer table (7), the first air valve (16), the second air valve (17) on seal box.
10. one according to claim 2 impacts/tangential compound motion abrasion test device a little, it is characterized in that, described fixture mounting seat is also provided with through hole (31).
CN201610041396.3A 2016-01-21 2016-01-21 A kind of impact/tangential compound motion abrasion test device a little Active CN105486603B (en)

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Cited By (8)

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CN105891036A (en) * 2016-05-23 2016-08-24 西南交通大学 Impacting-sliding composite frictional wear testing device and method thereof
CN106769584A (en) * 2017-01-23 2017-05-31 西南交通大学 A kind of impact wear test piece fixture, testing equipment and test method
CN108106926A (en) * 2017-12-15 2018-06-01 哈尔滨工业大学 A kind of bringing device of shock loading and the applying method of load
CN108204928A (en) * 2018-01-10 2018-06-26 中机试验装备股份有限公司 A kind of impact wear testing machine
CN110031351A (en) * 2019-03-21 2019-07-19 西南交通大学 A kind of punching abrasion test device based on control energy
CN110220810A (en) * 2019-06-27 2019-09-10 西南交通大学 Reciprocating sliding friction measures test platform
CN110346100A (en) * 2019-07-12 2019-10-18 成都宝利根自动化技术有限公司 A kind of shaking platform multiple degrees of freedom precision flexible linking device
CN111693243A (en) * 2020-06-24 2020-09-22 西南交通大学 High-temperature high-pressure multiphase flow impact fretting damage testing system and implementation method thereof

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Publication number Priority date Publication date Assignee Title
CN105891036A (en) * 2016-05-23 2016-08-24 西南交通大学 Impacting-sliding composite frictional wear testing device and method thereof
CN105891036B (en) * 2016-05-23 2018-08-17 西南交通大学 A kind of sliding compound friction abrasion test device of punching and its method
CN106769584A (en) * 2017-01-23 2017-05-31 西南交通大学 A kind of impact wear test piece fixture, testing equipment and test method
CN106769584B (en) * 2017-01-23 2019-04-30 西南交通大学 A kind of impact wear test piece fixture, testing equipment and test method
CN108106926A (en) * 2017-12-15 2018-06-01 哈尔滨工业大学 A kind of bringing device of shock loading and the applying method of load
CN108204928A (en) * 2018-01-10 2018-06-26 中机试验装备股份有限公司 A kind of impact wear testing machine
CN108204928B (en) * 2018-01-10 2020-08-18 中机试验装备股份有限公司 Impact wear testing machine
CN110031351A (en) * 2019-03-21 2019-07-19 西南交通大学 A kind of punching abrasion test device based on control energy
CN110220810A (en) * 2019-06-27 2019-09-10 西南交通大学 Reciprocating sliding friction measures test platform
CN110346100A (en) * 2019-07-12 2019-10-18 成都宝利根自动化技术有限公司 A kind of shaking platform multiple degrees of freedom precision flexible linking device
CN111693243A (en) * 2020-06-24 2020-09-22 西南交通大学 High-temperature high-pressure multiphase flow impact fretting damage testing system and implementation method thereof

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