CN104406873A - Friction wear testing machine for coating of shaft component - Google Patents
Friction wear testing machine for coating of shaft component Download PDFInfo
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- CN104406873A CN104406873A CN201410663763.4A CN201410663763A CN104406873A CN 104406873 A CN104406873 A CN 104406873A CN 201410663763 A CN201410663763 A CN 201410663763A CN 104406873 A CN104406873 A CN 104406873A
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Abstract
The invention discloses a friction wear testing machine for a coating of a shaft component. The friction wear testing machine comprises a mounting frame, a motor, a lever loading testing device, an information acquisition and processing module, a computer and a power switch, wherein the lever loading testing device comprises a loading lever, a friction contact piece, a levelling unit, a loading unit and a friction sensing unit. A sample is mounted on the output shaft of the motor; the friction contact piece is enabled to be near to the testing position of the sample by adjusting the left and right position of the loading lever; horizontal balance of the loading lever is adjusted by utilizing the levelling unit; the up and down position of the friction contact piece is adjusted to enable the friction contact piece to be in contact with the sample; the friction sensing unit is adjusted to enable the friction sensing unit to be near to the friction contact piece, and clung to the loading lever; load is applied by utilizing the loading unit, and is enabled to vertically act on the sample through the friction contact piece; the friction sensing unit, the information acquisition and processing module, and the computer are utilized to collect and analyze the friction data.
Description
Technical field
The present invention relates to the technical field of coating friction and wear behavior test, particularly relate to a kind of shaft element coating friction wear testing machine.
Background technology
Axle is a kind of common Typical Components, is widely used in various mechanical hook-up.There is friction in various degree in shaft element in use general and its support component, therefore, in order to improve the serviceable life of shaft element, generally will carry out surface treatment to improve its anti-wear performance.At present, surface-coating technology is the surface treatment method generally adopted, generally deposit at piece surface the wear-resistant coating that one deck has higher hardness, as Cr, CrN, TiN, diamond film and diamond-film-like (DLC) etc. by technological means such as plating, spraying, physical vapour deposition (PVD) (PVD) and chemical vapor depositions (CVD).The quality of the anti-wear performance of these coatings, the test mainly through its friction and wear behavior is evaluated; Wherein friction factor and rate of wear are the of paramount importance anti-wear performance indexs of coating two-phase, generally carry out test by friction wear testing machine and obtain.
At present according to the geometric configuration of friction pair and the difference of friction mode, mainly can be divided into that ball (pin) disc type, ball (pin) are board-like, lock ring formula, ring block type, ring ring type etc." Developing Application of pin ring friction wear testing machine " (Gao Caiqiao, Liu Xinming. the Developing Application of lock ring formula friction wear testing machine. solid lubrication .1982 (01): 49-53) describe a kind of lock ring formula friction wear testing machine in a literary composition, its technical scheme is: be that the test ring of 10mm is arranged on working shaft by fixture by external diameter 32mm, internal diameter 16mm, thickness, working shaft is arranged on motor by a pair shaft coupling; Pin is 20 × 10 × 4mm
3rectangular block, sell and be arranged on by fixture the position loading and keep left in the middle of lever, load lever left end hinge, loading lever freely can rotate around left end point.During work, sell and apply forward load p by loading lever to test ring, test ring is rotated with motor by the parts such as working shaft, shaft coupling, pin and test ring generation Relative friction, and friction force is F; Friction torque sensor is housed between a pair shaft coupling, friction torque M can be measured
f, M
f=F (D/2)=(FD)/2 (D is test ring external diameter), then having friction formula F=μ P can calculate friction factor is μ=(2M
f)/(PD).
Although this lock ring formula friction wear testing machine can carry out the friction and wear test on the face of cylinder, sample is necessary for the very little and Both ring sam of central aperture of length-diameter ratio, is not suitable for the friction and wear test of the larger axle class sample of length-diameter ratio; And lock ring formula adopt to mill pair be pin, the way of contact be face contact, in practical operation sell and test ring setting angle slightly deviation will cause the change of contact area; In addition, the abrasive dust produced in friction process or the friction media etc. added all can have an impact to contact area, and the change of contact area can cause the fluctuation of friction force, friction factor also can be affected thereupon, therefore, this way of contact is adopted can to cause the reliability of test result and repeatable poor.
Therefore, be necessary to provide a kind of technological means to address the aforementioned drawbacks.
Summary of the invention
The object of the invention is to the defect overcoming prior art, the shaft element coating friction wear testing machine provided, can only for sample for the very little and Both ring sam of central aperture of length-diameter ratio carries out testing and can not the axle class sample larger to the length-diameter ratio problem of testing with the shaft element coating friction wear testing machine solving prior art, and the shaft element coating friction wear testing machine solving prior art carries out testing so that the reliability of test result and the poor problem of repeatability because of mode that employing face contact.
The present invention is achieved in that shaft element coating friction wear testing machine, comprising:
The mounting bracket arranged is installed for parts;
In order to be connected and fixed with shaft element and to drive the motor that this shaft element rotates, described motor level is located on described mounting bracket, the output shaft of described motor connects described shaft element, and the dead in line of the axis of the output shaft of described motor and described shaft element;
In order to test the lever load proving installation of the anti-wear performance of the coating on described shaft element outside surface, described lever load proving installation comprises loading lever, with the rubbing contact part of described shaft element rubbing contact, in order to adjust the leveling unit of described loading lever horizontal equilibrium, for the loading unit to described shaft element imposed load, and in order to respond to the friction sensing unit of the andfrictional conditions between described rubbing contact part and described shaft element, described loading lever freely rotates to be located on described mounting bracket, described rubbing contact part is located on the first end of described loading lever, described leveling unit is located on the second end relative to the first end of described loading lever, described loading unit is located at the upper end of described rubbing contact part, described friction sensing unit is installed on described mounting bracket,
In order to receive transmitted by described friction sensing unit this information is carried out information acquisition and the processing module of A/D conversion process about the andfrictional conditions information between described rubbing contact part and described shaft element, described information acquisition and processing module are installed on described mounting bracket, and described information acquisition and processing module are electrically connected with described friction sensing unit;
In order to receive the numerical information that transmitted by described information acquisition and processing module and this numerical information to be carried out the computing machine of analyzing and processing, described computing machine is electrically connected with described information acquisition and processing module; And
In order to control the power switch of described motor, described friction sensing unit, described information acquisition and processing module and described computer switch, described power switch is located on described mounting bracket, and described power switch is electrically connected with described motor, described friction sensing unit, described information acquisition and processing module and described computing machine respectively.
Particularly, described lever load proving installation also comprises with being connected and fixed for described loading lever and can making the lever connecting seat that the activity of described loading lever is arranged, and described lever connecting seat comprises:
Be located at the sliding block on described mounting bracket;
Slide and be located at the top shoe coordinated on described sliding block and with described sliding block;
Be inserted between described top shoe and described sliding block, in order to limit the slip limited part of the relative sliding between described top shoe and described sliding block; And
Vertical rotation is located at the levers support part on described top shoe;
Wherein, described loading lever passes described levers support part and is articulated with on described levers support part.
Further, the lower end of described top shoe is provided with slide bumping, the upper end of described sliding block is provided with can the sliding recess of accommodating described slide bumping, described slide bumping is provided with the first sliding part, be provided with the second sliding part with described first sliding part corresponding matching in described sliding recess, described top shoe to be slided with described second coordinating of sliding part by described first sliding part and is located on described sliding block.
Further, described first sliding part is to be located on described slide bumping and towards the tooth bar on the end face of described sliding recess, and described tooth bar is extended and be positioned at described slide bumping towards on the end face of described sliding recess along the glide direction of described slide bumping, described second sliding part is meshed gears axle corresponding to described tooth bar.
Particularly, the upper end of described top shoe is provided with support member mounting groove, the lower end of described levers support part is arranged with at least one clutch shaft bearing, and described levers support part by clutch shaft bearing described in each and described support member mounting groove interference fit, be located on described top shoe by vertical rotation.
Particularly, the upper end of described levers support part is provided with construction opening, and described loading lever is provided with the rotating pin that a rotation is arranged, and described loading lever is located on described construction opening by described rotating pin and is articulated with on described levers support part.
Further, described loading lever is provided with a bearing pin mounting hole, and described rotating pin is arranged with at least one second bearing, and described rotating pin is rotated by the second bearing described in each and described bearing pin mounting hole interference fit and is located on described loading lever.
Particularly, described friction sensing unit comprises:
Induction installing plate, described induction installing plate is located on described mounting bracket;
Friction sensor, described friction sensor to be located on described induction installing plate by a cantilever and to be opposite in described rubbing contact part, the first end of described cantilever moves to be located on described induction installing plate, is connected to described friction sensor relative to the second end of the first end of described cantilever; And
Sensor mobile restriction part, described sensor mobile restriction part to be arranged on described induction installing plate and to be removablely contacted with described cantilever.
Particularly, described rubbing contact part comprises vertical rod, in order to the abrading-ball that contacts with described shaft element and the abrading-ball chuck in order to clamp described abrading-ball, described abrading-ball collet sleeve is connected to the lower end of described vertical rod and is held on described abrading-ball, and described abrading-ball part is exposed to the lower end of described abrading-ball chuck;
The first end of described loading lever is provided with installation axle sleeve, and described installation axle sleeve is socketed on described vertical rod.
Particularly, described leveling unit comprises the balancing weight on the second end being socketed on described loading lever;
Described loading unit comprises pallet, loads counterweight and counterweight fixture, described pallet movable sleeving is connected to the upper end of described rubbing contact part, described loading counterweight is placed on described rubbing contact part and presses on described pallet, and described counterweight fixture is connected with described rubbing contact part and moves the upper surface being pressed on described loading counterweight.
The technique effect of shaft element coating friction wear testing machine of the present invention is: when testing, be first arranged on the output shaft of motor by shaft element, and ensures the axis of the output shaft of motor and the dead in line of shaft element; Then, the right position of lever is loaded by adjustment, with the test position making rubbing contact part be close to shaft element, then leveling unit adjustment is utilized to load the horizontal equilibrium of lever, and by regulating the upper-lower position of rubbing contact part to make it just contact with shaft element, then adjustment friction sensing unit is to make it near rubbing contact part, and be just close to loading lever, again then, utilize loading unit imposed load, and by rubbing contact part, load is vertically acted on shaft element; After complete, just power switch can be started, the related test parameters of shaft element is set on computers, afterwards, just can starter motor, and the output shaft meeting rotary work of motor, and drive shaft element together to rotate, when the output shaft rubbing contact of rubbing contact part and motor, friction sensing unit can be responded to its relevant andfrictional conditions and the information of correspondence is sent to information acquisition and processing module, information acquisition and processing module can send it to computing machine by after this information processing, then to be performed an analysis process to this information by computing machine.Whole operating process, simple and convenient, and by each parts of adjustment lever load proving installation testing by the axle class sample larger to length-diameter ratio, simultaneously, utilize the point cantact mode between rubbing contact part and shaft element, effectively ensure reliability and the repeatability of test result.
Accompanying drawing explanation
Fig. 1 is the stereographic map of the shaft element coating friction wear testing machine of the embodiment of the present invention;
Fig. 2 is the schematic diagram of the lever connecting seat of the shaft element coating friction wear testing machine of the embodiment of the present invention;
Fig. 3 be in Fig. 2 A-A to sectional view;
Fig. 4 is the structural representation of the levers support part of the shaft element coating friction wear testing machine of the embodiment of the present invention;
Fig. 5 is the schematic diagram that the rubbing contact part of the shaft element coating friction wear testing machine of the embodiment of the present invention is contacted with shaft element;
Fig. 6 is the structural representation of the rubbing contact part of the shaft element coating friction wear testing machine of the embodiment of the present invention;
Fig. 7 is the structural representation of the friction sensing unit of the shaft element coating friction wear testing machine of the embodiment of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Refer to Fig. 1 to Fig. 7, below the most preferred embodiment of shaft element coating friction wear testing machine of the present invention is set forth.
The shaft element coating friction wear testing machine 100 of the present embodiment, comprise mounting bracket 10, motor 20, lever load proving installation 30, information acquisition and processing module 40, computing machine (not indicating in figure), power switch 50 and motor servo driver 60, below each parts of this shaft element coating friction wear testing machine 100 be further described:
Mounting bracket 10 is mainly used in installing for parts arranging;
Motor 20 is in order to be connected and fixed with shaft element and to drive this shaft element to rotate, wherein, this motor 20 level is located on mounting bracket 10, the output shaft coupling shaft type component P of motor 20, and the axis of the output shaft of motor 20 and the dead in line of shaft element, to ensure that the output shaft of shaft element and motor 20 rotates around same axis, for avoiding occurring eccentric rotary, preferably, this motor 20, for adopting servomotor, is furnished with the motor servo driver 60 be located on mounting bracket 10 accordingly; In addition, the output shaft of this motor 20 is connected to shaft element P by a sample clamp cover 21, and the first end of sample clamp cover 21 is socketed on shaft element P, is socketed on the output shaft of motor 20 relative to the second end of the first end of sample clamp cover 21;
Lever load proving installation 30 is the anti-wear performance in order to test the coating on shaft element P outside surface, particularly, this lever load proving installation 30 comprises loading lever 31, with the rubbing contact part 32 of shaft element P rubbing contact, the leveling unit 33 of lever 31 horizontal equilibrium is loaded in order to adjustment, in order to the loading unit 34 by rubbing contact part 32 imposed load, and in order to the friction sensing unit 35 of the andfrictional conditions between induction friction contact element 32 and shaft element P, loading lever 31 freely rotates to be located on mounting bracket 10, rubbing contact part 32 is located on the first end of loading lever 31, leveling unit 33 is located on the second end relative to the first end loading lever 31, loading unit 34 is located at the upper end of rubbing contact part 32, friction sensing unit 35 is installed on mounting bracket 10,
Information acquisition and processing module 40 are in order to receive by the friction information about the andfrictional conditions between rubbing contact part and shaft element P that transmits of sensing unit 35 and this information is carried out A/D conversion process, wherein, this information acquisition and processing module 40 are installed on mounting bracket 10, and information acquisition and processing module 40 are electrically connected with friction sensing unit 35;
Computing machine is in order to receive the numerical information that transmitted by information acquisition and processing module 40 and this numerical information is carried out analyzing and processing, and this computing machine is electrically connected with information acquisition and processing module 40;
Power switch 50 is the switch in order to control motor 20, friction sensing unit 35, information acquisition and processing module 40 and computing machine, power switch 50 is located on mounting bracket 10, and power switch 50 is electrically connected with motor 20, the sensing unit 35 that rubs, information acquisition and processing module 40 and computing machine respectively.
When testing, first shaft element P is arranged on the output shaft of motor 20, and ensures the axis of the output shaft of motor 20 and the dead in line of shaft element P, then, the right position of lever 31 is loaded by adjustment, with the test position making rubbing contact part 32 be close to shaft element P, then leveling unit 33 adjustment is utilized to load the horizontal equilibrium of lever 31, and by regulating the upper-lower position of rubbing contact part 32 to make it just contact with shaft element P, then adjustment friction sensing unit 35 is to make it near rubbing contact part 32, and be just close to the axle sleeve 314 be located at and loaded lever first end, again then, utilize loading unit 34 imposed load, and by rubbing contact part 32, load is vertically acted on shaft element P, after complete, just power switch 50 can be started, the related test parameters of shaft element P is set on computers, as the rotating speed of shaft element P, diameter, test duration, and the quality of loading unit 34, afterwards, just can starter motor 20, and the output shaft meeting rotary work of motor 20, and drive shaft element P together to rotate, when output shaft rubbing contact with motor 20 of rubbing contact part 32, friction sensing unit 35 can be responded to its relevant andfrictional conditions and the information of correspondence is sent to information acquisition and processing module 40, information acquisition and processing module 40 can send it to computing machine by after this information processing, by computing machine, this information is performed an analysis process again, obtain the friction force of the coating of shaft element P and the real time data of friction factor thus, and go out friction force and friction factor change curve in time by computer drawing simultaneously.Whole operating process, simple and convenient, and by each parts of adjustment lever load proving installation 30 testing by the axle class sample larger to length-diameter ratio, simultaneously, utilize the point cantact mode between rubbing contact part 32 and shaft element P, effectively ensure reliability and the repeatability of test result.
Refer to Fig. 2 and Fig. 3, and composition graphs 1, the lever load proving installation 30 of the present embodiment also comprises with being connected and fixed for loading lever 31 and can making the lever connecting seat 36 that loading lever 31 activity is arranged, lever connecting seat 36 comprises sliding block 361, top shoe 362, slip limited part 363 and levers support part 364, and the concrete structure of each parts of lever connecting seat 36 is:
Sliding block 361 is located on mounting bracket 10;
Top shoe 362 slides and is located on sliding block 361 and coordinates with sliding block 361;
Slip limited part 363 is inserted between top shoe 362 and sliding block 361, and it is in order to limit relative sliding between top shoe 362 and sliding block 361, and preferably, for the ease of drawing materials and installing setting, this slip limited part 363 is a bolt;
Levers support part 364 vertical rotation is located on top shoe 362, wherein, loads lever 31 and passes levers support part 364 and be articulated with on levers support part 364.
Thus, when loading lever 31 will be moved to adjust the setting position between rubbing contact part 32 and shaft element P, first can pass through the relative sliding between sliding block 361 and top shoe 362, to adjust the right position loading lever 31; Then, the rotation by levers support part 364 is arranged, to adjust the front and back position loading lever 31; Again then, by moving up and down of rubbing contact part 32, to adjust its upper-lower position, and whereby, just can make omnibearing adjustment setting to being located at the rubbing contact part 32 loaded on lever 31, effectively ensureing the rubbing contact between rubbing contact part 32 and shaft element P.
The relative sliding between sliding block 361 and top shoe 362 is controlled for the ease of user, the lower end of top shoe 362 is provided with slide bumping 3621, the upper end of sliding block 361 is provided with can the sliding recess 3611 of accommodating slide bumping 3621, slide bumping 3621 is provided with the first sliding part 3622, be provided with the second sliding part 3612 with the first sliding part 3622 corresponding matching in sliding recess 3611, top shoe 362 to be slided with the second coordinating of sliding part 3612 by the first sliding part 3622 and is located on sliding block 361.Preferably, first sliding part 3622 is for be located on slide bumping 3621 and towards the tooth bar on the end face of sliding recess 3611, wherein, this tooth bar is spur rack, and tooth bar is extended and be positioned at slide bumping 3621 towards on the end face of sliding recess 3611 along the glide direction of slide bumping 3621, and the second sliding part 3612 is meshed gears axle corresponding to tooth bar, when the relative sliding between sliding block 361 and top shoe 362 will be made, as long as utilize engaging between gear shaft with tooth bar, just institute syllabus can be reached, simultaneously, rack and pinion axle is drawn materials more for convenience, and smooth sliding between sliding block 361 and top shoe 362 can be made preferably.In addition, this slide bumping 3621 is trapezoidal projection, and sliding recess 3611 is the trapezoidal groove corresponding with trapezoidal projection.
Refer to Fig. 3 and Fig. 4, preferably, the rotational structure of the levers support part 364 of the present embodiment is: the upper end of top shoe 362 is provided with support member mounting groove 3623, the lower end of levers support part 364 is arranged with at least one clutch shaft bearing 3641, levers support part 364 by each clutch shaft bearing 3641 and support member mounting groove 3623 interference fit, be located on top shoe 362 by vertical rotation, and make levers support part 364 vertical rotation by clutch shaft bearing 3641, not only effectively simple, and it is easy for installation, side by side, for the ease of drawing materials, this clutch shaft bearing 3641 is rolling bearing, and this rolling bearing is provided with two, certainly the bearing of other type can also be adopted.
Refer to Fig. 2 and Fig. 4, and the rotational structure of the loading lever 31 of the present embodiment is: the upper end of levers support part 364 is provided with construction opening 3642, load the rotating pin 311 that lever 31 is provided with a rotation setting, load lever 31 and be located on construction opening 3642 by rotating pin 311 and be articulated with on levers support part 364.Wherein, load lever 31 and be provided with a bearing pin mounting hole 312, rotating pin 311 is arranged with at least one second bearing 313, rotating pin 311 rotates to be located at by each second bearing 313 and bearing pin mounting hole 312 interference fit and loads on lever 31, and make rotating pin 311 rotate setting by the second bearing 313, not only effectively simple, and it is easy for installation, side by side, for the ease of drawing materials, this second bearing 313 is rolling bearing, and this rolling bearing is provided with two, certainly also can adopt the bearing of other type.
Refer to Fig. 7, the friction sensing unit 35 of the present embodiment comprises induction installing plate 351, friction sensor 352 and sensor mobile restriction part 353, and the concrete structure of each parts of this friction sensing unit 35 is:
Induction installing plate 351 is located on mounting bracket 10;
Friction sensor 352 is located at by a cantilever 354 and is responded on installing plate 351 and be opposite in rubbing contact part 32, and the first end of cantilever 354 moves to be located on induction installing plate 351, is connected to friction sensor 352 relative to the second end of the first end of cantilever 354;
Sensor mobile restriction part 353 to be arranged on induction installing plate 351 and to be removablely contacted with cantilever 354, preferably, this sensor mobile restriction part 353 is bolt, so that draw materials and reduce production cost, meanwhile, this bolt is provided with two, is divided into the both sides of induction installing plate 351, be beneficial to the cantilever 354 screwing in location desired location preferably, then ensure that the location of friction sensor 352 is arranged.
When friction sensing unit 35 will be made to be close to rubbing contact part 32, sensor mobile restriction part 353 is first made to move away from cantilever 354, can move forward and backward to make cantilever 354, then by adjustment cantilever 354, to adjust the distance be located between friction sensor 352 on cantilever 354 and rubbing contact part 32, after adjusting, just sensor mobile restriction part 353 moving contact can be made in cantilever 354, with cantilever mounted 354, thus, adjustment operation is just completed.
Refer to Fig. 5 and Fig. 6, the rubbing contact part 32 of the present embodiment comprises vertical rod 321, in order to the abrading-ball 322 that contacts with shaft element P and the abrading-ball chuck 323 in order to clamp abrading-ball 322, abrading-ball chuck 323 is socketed on the lower end of vertical rod 321 and is held on abrading-ball 322, abrading-ball 322 part is exposed to the lower end of abrading-ball chuck 323, so, if when making rubbing contact part be contacted with shaft element P, as long as make vertical rod 321 perpendicular to shaft element P, and abrading-ball 322 is tangential on shaft element P; The first end of this loading lever 31 is provided with installs axle sleeve 314, axle sleeve 314 is installed and is socketed on vertical rod 321, particularly, the outside of vertical rod 321 is provided with external thread, and axle sleeve 314 is installed with the cavity end wall that vertical rod 321 is socketed and is provided with the internal thread be threaded with this external thread, thus, user both can have been facilitated to adjust the distance up and down of vertical rod 321, the position of vertical rod 321 can also have been fixed.
Refer to Fig. 1, the leveling unit 33 of the present embodiment comprises the balancing weight 330 be socketed on the second end loading lever 31, be specially, the second end loading lever 31 is provided with external thread, and the hollow hole end wall that balancing weight 330 and the second end loading lever 31 are socketed is provided with the internal thread be threaded with this external thread, thus, user both can be facilitated to adjust the left and right distance of balancing weight 330, can also the position of fixed weight block 330; Side by side, in order to adjust the horizontal equilibrium loading lever 31 preferably, balancing weight 330 is provided with two, and sized by these two balancing weights 330, quality is different.
Refer to Fig. 6, and composition graphs 1, this loading unit 34 comprises pallet 341, loads counterweight 342 and counterweight fixture 343, and the concrete structure of each parts of this loading unit 34 is:
Pallet 341 movable sleeving is connected to the upper end of rubbing contact part 32, be specially, pallet 341 movable sleeving is connected to vertical rod 321 upper end of rubbing contact part 32, wherein, because vertical rod 321 is provided with external thread, and the end wall of the hollow hole that pallet 341 is socketed with vertical rod 321 is provided with the internal thread be threaded with this external thread, thus, both user can have been facilitated to adjust the distance up and down of pallet 341, can also the position of fixed tray 341;
Load counterweight 342 be placed on rubbing contact part 32 and press on pallet 341, be specially, this loading counterweight 342 is placed on the vertical rod 321 of rubbing contact part 32 and presses on pallet 341;
Counterweight fixture 343 is connected with rubbing contact part 32 and moves the upper surface being pressed on and loading counterweight 342, be specially, this counterweight fixture 343 is threaded with the vertical rod 321 of rubbing contact part 32 and moves the upper surface being pressed on and loading counterweight 342, wherein, this counterweight fixture 343 is hold-down nut, so that draw materials.
Referring again to Fig. 1, the mounting bracket 10 of the present embodiment comprises lower shoe 11, mounting plate 12 and support post 13, mounting plate 12 and lower shoe 11 interval are arranged, support post 13 is located between mounting plate 12 and lower shoe 11, wherein, lower shoe 11, mounting plate 12 are square plate, and support post 13 is provided with four, and these four support posts 13 are divided into the surrounding between mounting plate 12 and lower shoe 11; And, this mounting bracket 10 correspondence is equipped with the hexagon socket head cap screw in order to fixing mounting plate 12, lower shoe 11, support post 13 three, be specially, the position at four angles of mounting plate 12, lower shoe 11 has step through-hole, and the upper/lower terminal of four support posts 13 all offers the blind hole corresponding with this step through-hole, and this blind hole has attacked internal thread; During installation, adopt four hexagon socket head cap screws through four stepped holes of mounting plate 12, and make blind threaded connection of these four hexagon socket head cap screws and four support post 13 upper ends; Then, in lower shoe 11 bottom, the position of its four stepped holes corresponding is equipped with the pin nail 14 in order to support, adopt four hexagon socket head cap screws successively through four stepped holes of pin nail 14, lower shoe 11, and make these four hexagon socket head cap screws and blind threaded connection of four support post 13 lower ends, just complete the assembling of mounting bracket 10 thus.Preferably, motor 20, lever load proving installation 30 are located on mounting plate 12, and information acquisition and processing module 40, power switch 50, motor servo driver 60 are located on lower shoe 11, because this mounting bracket 10 is divided into two-layer by lower shoe 11 and mounting plate 12, be conducive to the mounting arrangements of each parts.
Below in conjunction with each graphic, the principle of work of the shaft element coating friction wear testing machine 100 of the present embodiment is further described:
When testing, first shaft element P is arranged on the output shaft of motor 20, and ensures the axis of the output shaft of motor 20 and the dead in line of shaft element P, then, lever 31 right position is loaded by adjustment, to make rubbing contact part 32 near the test position of shaft element P, then leveling unit 33 adjustment is utilized to load the horizontal equilibrium of lever 31, and by regulating the upper-lower position of rubbing contact part 32, rubbing contact part is just contacted with shaft element P, then adjustment friction sensing unit 35 is to make it near rubbing contact part 32, and be just close to the axle sleeve 314 be located at and loaded lever first end, again then, utilize loading unit 34 imposed load, and by rubbing contact part 32, load is vertically acted on shaft element P, after complete, just power switch 50 can be started, the related test parameters of shaft element P is set on computers, as the rotating speed of shaft element P, diameter, test duration, and the quality of loading unit 34, afterwards, just can starter motor 20, and the output shaft meeting rotary work of motor 20, and drive shaft element P together to rotate, when output shaft rubbing contact with motor 20 of rubbing contact part 32, friction sensing unit 35 can be responded to its relevant andfrictional conditions and the information of correspondence is sent to information acquisition and processing module 40, information acquisition and processing module 40 can send it to computing machine by after this information processing, by computing machine, this information is performed an analysis process again, obtain the friction force of the coating of shaft element P and the real time data of friction factor thus, and go out friction force and friction factor change curve in time by computer drawing simultaneously.
The foregoing is only preferred embodiment of the present invention, its structure is not limited to the above-mentioned shape enumerated, and all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. shaft element coating friction wear testing machine, is characterized in that, comprising:
The mounting bracket arranged is installed for parts;
In order to be connected and fixed with shaft element and to drive the motor that this shaft element rotates, described motor level is located on described mounting bracket, the output shaft of described motor connects described shaft element, and the dead in line of the axis of the output shaft of described motor and described shaft element;
In order to test the lever load proving installation of the anti-wear performance of the coating on described shaft element outside surface, described lever load proving installation comprises loading lever, with the rubbing contact part of described shaft element rubbing contact, in order to adjust the leveling unit of described loading lever horizontal equilibrium, for the loading unit to described shaft element imposed load, and in order to respond to the friction sensing unit of the andfrictional conditions between described rubbing contact part and described shaft element, described loading lever freely rotates to be located on described mounting bracket, described rubbing contact part is located on the first end of described loading lever, described leveling unit is located on the second end relative to the first end of described loading lever, described loading unit is located at the upper end of described rubbing contact part, described friction sensing unit is installed on described mounting bracket,
In order to receive transmitted by described friction sensing unit this information is carried out information acquisition and the processing module of A/D conversion process about the andfrictional conditions information between described rubbing contact part and described shaft element, described information acquisition and processing module are installed on described mounting bracket, and described information acquisition and processing module are electrically connected with described friction sensing unit;
In order to receive the numerical information that transmitted by described information acquisition and processing module and this numerical information to be carried out the computing machine of analyzing and processing, described computing machine is electrically connected with described information acquisition and processing module; And
In order to control the power switch of switch of described motor, described friction sensing unit, described information acquisition and processing module and described computing machine, described power switch is located on described mounting bracket, and described power switch is electrically connected with described motor, described friction sensing unit, described information acquisition and processing module and described computing machine respectively.
2. shaft element coating friction wear testing machine as claimed in claim 1, it is characterized in that: described lever load proving installation also comprises with being connected and fixed for described loading lever and can making the lever connecting seat that the activity of described loading lever is arranged, and described lever connecting seat comprises:
Be located at the sliding block on described mounting bracket;
Slide and be located at the top shoe coordinated on described sliding block and with described sliding block;
Be inserted between described top shoe and described sliding block, in order to limit the slip limited part of the relative sliding between described top shoe and described sliding block; And
Vertical rotation is located at the levers support part on described top shoe;
Wherein, described loading lever passes described levers support part and is articulated with on described levers support part.
3. shaft element coating friction wear testing machine as claimed in claim 2, it is characterized in that: the lower end of described top shoe is provided with slide bumping, the upper end of described sliding block is provided with can the sliding recess of accommodating described slide bumping, described slide bumping is provided with the first sliding part, be provided with the second sliding part with described first sliding part corresponding matching in described sliding recess, described top shoe to be slided with described second coordinating of sliding part by described first sliding part and is located on described sliding block.
4. shaft element coating friction wear testing machine as claimed in claim 3, it is characterized in that: described first sliding part is to be located on described slide bumping and towards the tooth bar on the end face of described sliding recess, described tooth bar is extended and be positioned at described slide bumping towards on the end face of described sliding recess along the glide direction of described slide bumping, and described second sliding part is meshed gears axle corresponding to described tooth bar.
5. shaft element coating friction wear testing machine as claimed in claim 2, it is characterized in that: the upper end of described top shoe is provided with support member mounting groove, the lower end of described levers support part is arranged with at least one clutch shaft bearing, and described levers support part by clutch shaft bearing described in each and described support member mounting groove interference fit, be located on described top shoe by vertical rotation.
6. shaft element coating friction wear testing machine as claimed in claim 2, it is characterized in that: the upper end of described levers support part is provided with construction opening, described loading lever is provided with the rotating pin that a rotation is arranged, and described loading lever is located on described construction opening by described rotating pin and is articulated with on described levers support part.
7. shaft element coating friction wear testing machine as claimed in claim 6, it is characterized in that: described loading lever is provided with a bearing pin mounting hole, described rotating pin is arranged with at least one second bearing, and described rotating pin is rotated by the second bearing described in each and described bearing pin mounting hole interference fit and is located on described loading lever.
8. the shaft element coating friction wear testing machine as described in any one of claim 1-7, is characterized in that: described friction sensing unit comprises:
Induction installing plate, described induction installing plate is located on described mounting bracket;
Friction sensor, described friction sensor to be located on described induction installing plate by a cantilever and to be opposite in described rubbing contact part, the first end of described cantilever moves to be located on described induction installing plate, is connected to described friction sensor relative to the second end of the first end of described cantilever; And
Sensor mobile restriction part, described sensor mobile restriction part to be arranged on described induction installing plate and to be removablely contacted with described cantilever.
9. the shaft element coating friction wear testing machine as described in any one of claim 1-7, it is characterized in that: described rubbing contact part comprises vertical rod, in order to the abrading-ball that contacts with described shaft element and the abrading-ball chuck in order to clamp described abrading-ball, described abrading-ball collet sleeve is connected to the lower end of described vertical rod and is held on described abrading-ball, and described abrading-ball part is exposed to the lower end of described abrading-ball chuck;
The first end of described loading lever is provided with installation axle sleeve, and described installation axle sleeve is socketed on described vertical rod.
10. the shaft element coating friction wear testing machine as described in any one of claim 1-7, is characterized in that: described leveling unit comprises the balancing weight on the second end being socketed on described loading lever;
Described loading unit comprises pallet, loads counterweight and counterweight fixture, described pallet movable sleeving is connected to the upper end of described rubbing contact part, described loading counterweight is placed on described rubbing contact part and presses on described pallet, and described counterweight fixture is connected with described rubbing contact part and moves the upper surface being pressed on described loading counterweight.
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| CN201410663763.4A CN104406873B (en) | 2014-11-19 | 2014-11-19 | Shaft element coating friction wear testing machine |
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| CN201410663763.4A CN104406873B (en) | 2014-11-19 | 2014-11-19 | Shaft element coating friction wear testing machine |
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| CN109556983A (en) * | 2019-01-22 | 2019-04-02 | 四川大学 | The secondary friction-wear test platform of one discharge plate disk friction |
| CN110320126A (en) * | 2019-08-16 | 2019-10-11 | 贵州大学 | A kind of vertical loading device for reciprocating corrosion fretting apparatus |
| CN110579418A (en) * | 2019-11-06 | 2019-12-17 | 合肥工业大学 | lever loading type friction wear testing machine capable of controlling magnetic field environment |
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| CN109556983A (en) * | 2019-01-22 | 2019-04-02 | 四川大学 | The secondary friction-wear test platform of one discharge plate disk friction |
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| CN110320126A (en) * | 2019-08-16 | 2019-10-11 | 贵州大学 | A kind of vertical loading device for reciprocating corrosion fretting apparatus |
| CN110579418A (en) * | 2019-11-06 | 2019-12-17 | 合肥工业大学 | lever loading type friction wear testing machine capable of controlling magnetic field environment |
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