CN105486603B - A kind of impact/tangential compound motion abrasion test device a little - Google Patents

A kind of impact/tangential compound motion abrasion test device a little Download PDF

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Publication number
CN105486603B
CN105486603B CN201610041396.3A CN201610041396A CN105486603B CN 105486603 B CN105486603 B CN 105486603B CN 201610041396 A CN201610041396 A CN 201610041396A CN 105486603 B CN105486603 B CN 105486603B
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China
Prior art keywords
sealing
straight
motor
bar
impact
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CN201610041396.3A
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Chinese (zh)
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CN105486603A (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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Southwest Jiaotong University
Shanghai Nuclear Engineering Research and Design Institute Co Ltd
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Southwest Jiaotong University
Shanghai Nuclear Engineering Research and Design Institute Co Ltd
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Priority to CN201610041396.3A priority Critical patent/CN105486603B/en
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 kind of impact/tangential compound motion abrasion test devices a little.The present invention includes rack, the sealing device being set in rack;The rack is equipped with the first motor being located above sealing device, is sequentially connected first pressure sensor and the first straight-bar for installing specimen holder in the first motor, the bottom end of first straight-bar is stretched into sealing device;It is additionally provided with the second motor positioned at sealing device side in the rack, is connected with second pressure sensor, the second straight-bar on second motor in turn, the described one end of second straight-bar far from second pressure sensor is stretched into sealing device;The tangential motion device being connected with the second straight-bar is equipped in the sealing device.The combined type abrasion that the present invention is realized impact wear and tangentially worn using the motion mode for rushing-cutting coupling.

Description

A kind of impact/tangential compound motion abrasion test device a little
Technical field
The present invention relates to fretting wear experimental rigs, and in particular to a kind of to carry out the multi-functional of compound motion from both direction The experimental rig worn a little.
Background technology
Impact wear is the surface damage to hesitate repeatedly caused by dynamic Contact, shock between two surfaces of solids.Each In class machinery, many parts all subject different degrees of impact wear, and the machinery zero caused by impact fretting wear Component failure is widely present in the fields such as electric power, petrochemical industry, mining machinery, ocean machinery, aerospace, from bringing larger energy Source wastes, and huge loss is brought to people's property safety and national economy.Shock loading can cause contact surface to destroy, sternly Component of machine will be caused to fail when weight.In the type of wear out failure, impact wear may be the most unfavorable to material, understand Minimum a kind of abrasion.In order to study this abrasion, up to the present, the testing machine of polymorphic type is had been developed that both at home and abroad.
In actual condition, component structural is while as tangential not only only by the impact force in a direction Small motion and unstable wear process.Currently, existing impact wear testing machine the degree of automation is low, typically just apply single The impact force in direction, and most impact wears are a multi-direction Coupling Damage processes, therefore, existing such device is not Impact wear behavior can comprehensively be studied.In addition, the Service Environment of parts is complicated in actual condition, such as high temperature, height Pressure and vacuum environment etc., and the experimental condition of existing testing machine is effective.
Invention content
In order to improve the above problem, the present invention provides a kind of examinations of abrasion a little of achievable impact/tangential compound motion Experiment device.
To achieve the goals above, the technical solution adopted by the present invention is as follows:
A kind of impact/tangential compound motion abrasion test device, including rack a little, the sealing dress being set in rack It sets;The rack is equipped with the first motor being located above sealing device, and first pressure biography is sequentially connected in the first motor Sensor and the first straight-bar for installing specimen holder, the bottom end of first straight-bar is stretched into sealing device;In the rack It is additionally provided with the second motor positioned at sealing device side, second pressure sensor, second are connected in turn on second motor Straight-bar, the described one end of second straight-bar far from second pressure sensor are stretched into sealing device;Be equipped in the sealing device with The tangential motion device that second straight-bar is in contact.
Specifically, the first motor and the second motor are all made of voice coil motor.
Specifically, first straight-bar and the second straight-bar are cylindric.
Specifically, the tangential motion device includes two the linear guides for being set to sealing device bottom, is set to straight Above line guide rail and be capable of the fixture mounting seat of relative rectilinear guide rail sliding, and be set to fixture mounting seat top and with The connected water container of fixture mounting seat;Second straight-bar is in contact with fixture mounting seat side.
Specifically, it is additionally provided with through-hole in the fixture mounting seat, the through-hole is for installing heating rod.
Specifically, the fixture mounting seat is connected by sliding block with the linear guide.
Specifically, damping punch is additionally provided between the first motor and first pressure sensor.
Specifically, the lifting gear of control first motor lifting is additionally provided in the rack.
Specifically, the lifting gear includes the servo motor being fixed in rack, the ripple connection being connected with servo motor Axis device, the ball wire bar pair being connected with ripple shaft coupling, and two straight trip guide rails being set in rack, the first motor It is slidably connected on two straight trip guide rails by first motor mounting plate;The first motor mounting plate also with ball wire bar pair phase Even.
Specifically, the servo motor is installed on by servo motor fixed plate in rack.
Specifically, the ball wire bar pair is made of nut and lead screw;The lead screw passes through two-way bearing and ripple shaft coupling Device is connected, and the two-way bearing is connected by bearing fixed seat with rack;The nut passes through nut fixed seat and the first electricity Machine mounting plate is connected.
Specifically, the first dynamic sealing flange passed through for the first straight-bar, the sealing dress are equipped at the top of the sealing device It sets side wall and is equipped with the second dynamic sealing flange passed through for the second straight-bar.
Specifically, it is additionally provided with the ring flange passed through for the first cylinder straight-bar at the top of the sealing device.
Specifically, the sealing device includes seal box, and be installed on seal box othermohygrometer table, first disengaging Air valve, the second air valve.
Specifically, the seal box side is equipped with opening, is provided in the opening with sealed container door, and be additionally provided with rubber in opening Cushion rubber, effect are the sealing effects improved between sealed container door and seal box.It is additionally provided with observation window on the sealed container door.Institute The locking for stating sealed container door uses typical handwheel lead screw device.
The principle of the present invention:Two straight-bar vertical directions for stretching into sealing device are driven to rush respectively by two motors Hit movement and the tangential motion of horizontal direction, realization rushes-cut coupled motions.In experiment, impact force can be controlled in 1~300 newton, The tangential amplitude minimum that moves back and forth can reach 5 μm.Both direction running frequency can reach 50Hz or more.
Compared with prior art, the present invention haing the following advantages and advantageous effect:
The combined type abrasion that the present invention is realized impact wear and tangentially worn using the motion mode for rushing-cutting coupling.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the front view of the present invention.
Fig. 3 is the side view of the present invention.
Fig. 4 is the structural schematic diagram of lifting gear in the present invention.
Fig. 5 is the structural schematic diagram of tangential motion device in the present invention.
Wherein, the corresponding parts title is marked to be in attached drawing:1- servo motors, 2- servo motor fixed plates, 3- dampings Punch, 4- first motor mounting plates, 5- first pressure sensors, the first straight-bars of 6-, 7- othermohygrometer tables, 8- seal boxs, 9- Two motors, the second straight-bars of 10-, 11- the second dynamic sealing flanges, 12- handwheels, 13- the first dynamic sealing flanges, 14- observation windows, 15- Sealed container door, the first air valves of 16-, the second air valves of 17-, 18- ring flanges, 19- first motors, 20- racks, 21- Two pressure sensors, 22- rubber rings, 23- ripple shaft couplings, 24- straight trip tracks, 25- bearing fixed seats, 26- nuts, 27- spiral shells Female fixed seat, 28- lead screws, 29- water containers, 30- fixture mounting seats, 31- through-holes, 32- the linear guides.
Specific implementation mode
The invention will be further described with reference to the accompanying drawings and examples, 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, including rack 20 a little is set to Sealing device in rack;The rack is equipped with the first motor 19 being located above sealing device, in the first motor according to Sealing is stretched into secondary connection first pressure sensor 5 and the first straight-bar 6 for installing specimen holder, the bottom end of first straight-bar In device;It is additionally provided with the second motor 9 positioned at sealing device side in the rack, is connected on second motor in turn Sealing device is stretched into two pressure sensors 21 and the second straight-bar 10, the described one end of second straight-bar far from second pressure sensor It is interior;The tangential motion device being connected with the second straight-bar is equipped in the sealing device.
As a preferred embodiment, the rack is " L " type, the sealing device and the second motor are set to the transverse plate of rack On, the first motor is set in the vertical plate of rack.And rack uses ductile cast iron integral cast, and intensity is high, to It can guarantee the dimensional stability in optimal damper performance and wide temperature range under high-frequency test.
Specifically, in actual use, the load frequency of electric machine control system control first motor and the second motor can be used Rate, load amplitude and loading curve type;First pressure sensor and second pressure sensor rub to impact force and tangentially respectively It wipes power to measure, the simulation that the present invention collects first pressure sensor using acquisition system and second pressure sensor is acquired Data.
In the actual production process, first pressure sensor and the first straight-bar are using threaded connection, second pressure sensor With the second straight-bar using being threadedly coupled, setting in this way can be easy for installation and removal.As a preferred embodiment, the first straight-bar and second Straight-bar uses columned straight-bar.
, can be rectangular by the processing of the bottom end of the first straight-bar in order to more convenient the first straight-bar of installation and removal, just It dismantles or installs in being clamped with nut spanner.
Specimen holder is mounted on the first straight-bar in order to more convenient, so it is equipped with interior spiral shell in the first straight-bar bottom end Line, such installing and dismounting specimen holder and its conveniently.
In order to reduce the deformation of the second straight-bar during tangential motion, the second straight-bar is manufactured using high strength steel.
In use, the present invention is to drive two straight-bars for stretching into sealing device to do respectively by first motor and the second motor The ballistic motion of vertical direction and the tangential motion of horizontal direction, realization rush-cut coupled motions.
As a preferred embodiment, the first motor and the second motor are all made of voice coil motor, there is high frequency sound, high-precision Feature can preferably realize that punching-coupling cuts coupled motions.First pressure sensor and second pressure sensor use pcb pressure Sensor, frequency acquisition and precision are high, and the accuracy of data of the present invention can be further improved.
Specifically, the tangential motion device includes two the linear guides 32 for being set to sealing device bottom, is set to Above the linear guide and it is capable of the fixture mounting seat 30 that relative rectilinear guide rail slides, and is set to above fixture mounting seat And the water container 29 being connected with fixture mounting seat;Second straight-bar is in contact with fixture mounting seat side.Wherein, fixture Mounting seat is connected by sliding block with the linear guide, and sliding block can be whole so as to realize in the cofree sliding of rectilinear orbit A fixture mounting seat and water container slide in sealing device.
As a preferred method, through-hole 31 is additionally provided in the fixture mounting seat.The through-hole number can be according to reality Border situation is configured, and is mainly used for installing heating rod, be heated up to seal box to realize, to meet working condition requirement.
The measurement of corresponding pressure sensor is influenced in order to reduce inertia force, fixture mounting seat and water container are all made of Light material manufactures, as a preferred embodiment, the present invention is made using aluminium alloy.
Damping punch 3 is additionally provided between the first motor and first pressure sensor as a preferred method,.It should Damping punch is made of components such as spring and sleeves, and effect is damage of the rigid shock power to first motor in order to prevent, separately Outside, additionally it is possible to realize constant impingement power.
The lifting gear of control first motor lifting is additionally provided in the rack as a preferred method,.The lifting fills The lifting of achievable first motor is set, that is, can realize the lifting of the first straight-bar, by the way that the lifting gear is arranged, is being installed When specimen holder, the first straight-bar can be lifted up a part, after specimen holder is mounted on the first straight-bar, then by first Straight-bar is moved downward to setting position, can proceed by experiment later, easy to operate.
Hydraulic cylinder or pneumatic linear actuator can be used in the lifting gear of the present invention, is then specifically that a hydraulic pressure is fixed in rack Cylinder or pneumatic linear actuator, and the piston rod of hydraulic cylinder and pneumatic linear actuator is connected with first motor, to push first motor to rise, under Drop.Certainly other existing lifting gears can also be used, as long as it can realize the up and down of first motor.
However, the present invention provides a kind of preferred embodiment of lifting gear, specific ground structure is as follows:
The lifting gear includes the servo motor 1 being fixed in rack, the ripple shaft coupling 23 being connected with servo motor, The ball wire bar pair being connected with ripple shaft coupling, and two straight trip guide rails 24 being set in rack, the first motor are logical First motor mounting plate 4 is crossed to be slidably connected on two straight trip guide rails;The first motor mounting plate also with ball wire bar pair phase Even.
Wherein, the servo motor is installed on by servo motor fixed plate 2 in rack.
The present invention realizes the lifting and decline of first motor by ball screw assembly, and provided with straight trip guide rail, passes through Setting straight trip guide rail, can reduce frictional resistance, so that first motor can easily realize up and down.
The ball wire bar pair is made of nut 15 and lead screw 28 as a preferred method,;The lead screw passes through two-way Bearing is connected with ripple shaft coupling, and the two-way bearing is connected by bearing fixed seat 25 with rack;The nut passes through spiral shell Female fixed seat 27 is connected with first motor mounting plate.Wherein, the operation principle of ball screw assembly, is servo motor rotary motion band What dynamic leading screw rotation was then converted into the nut of ball screw assembly, rises or falls linear motion, due to nut and first motor peace Loading board is connected, and just drives the up and down therewith of first motor mounting plate, finally realizes the lifting of first motor.
Worth explanation is that leading screw of the invention is connected by two-way bearing with ripple shaft coupling, can effectively prevent backwashing, To preferably realize the lifting of the present invention.And the two-way bearing of the present invention preloads two-way bearing for rigidity.
As a preferred method, the first dynamic sealing flange passed through for the first straight-bar is equipped at the top of the sealing device 13, the sealing device side wall is equipped with the second dynamic sealing flange 12 passed through for the second straight-bar.First straight-bar and the second straight-bar are logical It crosses corresponding dynamic sealing flange to extend into sealing device, linear reciprocating motion a little can not only be made in dynamic sealing flange, And can ensure the leakproofness of junction, so as to ensure that pre-set environment is not changed in sealing device.
As a preferred method, the ring flange passed through for the first cylinder straight-bar is additionally provided at the top of the sealing device 18.Wherein, installation can effectively prevent by the way that the ring flange is arranged there are one straight line flange bearing and rush-cut in the ring flange In coupling test, since the presence of tangential force causes to damage to first pressure sensor.
The sealing device includes seal box 8 as a preferred method, and the othermohygrometer being installed on seal box Table 7, the first air valve 16, the second air valve 17.By the way that above-mentioned apparatus is arranged, it can realize that the experiment under different operating modes is wanted It asks, such as:High temperature, high pressure, vacuum, humidity, aqueous medium and gas with various environment etc..
The seal box side is equipped with opening as a preferred method, is provided in the opening with sealed container door 15, and opening Rubber ring 22 is additionally provided at mouthful, effect is the sealing effect improved between sealed container door and seal box.On the sealed container door It is additionally provided with observation window 14, which be made by high-pressure glass.The locking of the sealed container door uses typical handwheel 12 lead screw device.To meet high pressure and vacuum environment, seal box is made of high strength steel, and wall thickness dimension is big as possible, Reinforcing rib can be welded in its outer surface if needed.
The optimal case of the present invention is then above-mentioned preferred embodiment to be carried out whole combinations, however the experiment of final solution is real It is as follows to apply process:It before specimen holder is installed, is rotated in the forward direction by control servomotor, lifting gear is risen into certain altitude, First motor is lifted to certain altitude to realize, specimen holder is then mounted on the first straight-bar bottom end, while specimen holder Tool is located inside seal box, and subsequent control servomotor reversely rotates, and first motor is dropped to predetermined altitude, closes and locks Sealed container door can be heated up, vacuumized, be pressurized or be filled the processing such as atmosphere according to actual requirement.After all are ready to, The motion amplitude and frequency that impact force, frequency and the amplitude and the second motor of first motor are controlled according to test requirements document, are rushed Hit/tangentially Compound Fretting Wear experiment.It is worth noting that during the test, tangentially being rubbed by the acquisition of second pressure sensor Wipe power.
According to above-described embodiment, the present invention can be realized well.It is worth noting that before based on said structure design It puts, to solve same technical problem, even if some made in the present invention are used without substantive change or polishing Technical solution essence still as the present invention, therefore it should also be as within the scope of the present invention.

Claims (9)

1. a kind of impact/tangential compound motion abrasion test device a little, which is characterized in that including rack (20), be set to machine Sealing device on frame;The rack is equipped with the first motor (19) being located above sealing device, in the first motor according to Secondary connection first pressure sensor (5) and the first straight-bar (6) for installing specimen holder, the bottom end of first straight-bar are stretched into In sealing device;It is additionally provided with the second motor (9) positioned at sealing device side in the rack, connects successively on second motor It is connected to second pressure sensor (21) and the second straight-bar (10), the described one end of second straight-bar far from second pressure sensor is stretched into In sealing device;The tangential motion device being connected with the second straight-bar is equipped in the sealing device;The tangential motion device packet Two the linear guides (32) for being set to sealing device bottom are included, are set to above the linear guide and being capable of relative rectilinear guide rail cunning Dynamic fixture mounting seat (30), and it is set to the water container being connected above fixture mounting seat and with fixture mounting seat (29);Second straight-bar is in contact with fixture mounting seat side.
2. a kind of impact/tangential compound motion according to claim 1 abrasion test device a little, which is characterized in that institute It states and is additionally provided with damping punch (3) between first motor and first pressure sensor.
3. a kind of impact/tangential compound motion according to claim 1 abrasion test device a little, which is characterized in that institute State the lifting gear that control first motor lifting is additionally provided in rack.
4. a kind of impact/tangential compound motion according to claim 3 abrasion test device a little, which is characterized in that institute It includes the servo motor (1) being fixed in rack, the ripple shaft coupling (23) being connected with servo motor, with ripple to state lifting gear The connected ball wire bar pair of shaft coupling, and two straight trip guide rails (24) being set in rack, the first motor pass through the One motor mounting plate (4) is slidably connected on two straight trip guide rails;The first motor mounting plate is also connected with ball wire bar pair.
5. a kind of impact/tangential compound motion according to claim 4 abrasion test device a little, which is characterized in that institute Ball wire bar pair is stated to be made of nut (15) and lead screw (28);The lead screw is connected by two-way bearing with ripple shaft coupling, The two-way bearing is connected by bearing fixed seat (25) with rack;The nut passes through nut fixed seat (27) and first motor Mounting plate is connected.
6. a kind of impact/tangential compound motion according to claim 1 abrasion test device a little, which is characterized in that institute State the first dynamic sealing flange (13) for being equipped at the top of sealing device and being passed through for the first straight-bar, the sealing device side wall is equipped with for the The second dynamic sealing flange (12) that two straight-bars pass through.
7. a kind of impact/tangential compound motion according to claim 1 abrasion test device a little, which is characterized in that institute It states and is additionally provided with the ring flange (18) passed through for the first cylinder straight-bar at the top of sealing device.
8. a kind of impact/tangential compound motion according to claim 1 abrasion test device a little, which is characterized in that institute It includes seal box (8) to state sealing device, and be installed on seal box othermohygrometer table (7), the first air valve (16), Two air valves (17).
9. a kind of impact/tangential compound motion according to claim 1 abrasion test device a little, which is characterized in that institute It states and is additionally provided with through-hole (31) in fixture mounting seat.
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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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
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
CN108204928B (en) * 2018-01-10 2020-08-18 中机试验装备股份有限公司 Impact wear testing machine
CN110031351B (en) * 2019-03-21 2020-06-09 西南交通大学 Die-cut wear 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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