CN110579418A - lever loading type friction wear testing machine capable of controlling magnetic field environment - Google Patents
lever loading type friction wear testing machine capable of controlling magnetic field environment Download PDFInfo
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- CN110579418A CN110579418A CN201911074341.2A CN201911074341A CN110579418A CN 110579418 A CN110579418 A CN 110579418A CN 201911074341 A CN201911074341 A CN 201911074341A CN 110579418 A CN110579418 A CN 110579418A
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- lever
- magnetic field
- loading
- steel ball
- lower sample
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/027—Test-benches with force-applying means, e.g. loading of drive shafts along several directions
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
Abstract
The invention relates to a lever loading type friction and wear testing machine capable of controlling a magnetic field environment, which comprises a magnetic field device, wherein a lower sample piece is arranged in the magnetic field device, a driving mechanism drives the magnetic field device to reciprocate in the horizontal direction, a loading rod is arranged above the lower sample piece, a test steel ball is vertically arranged at the lower end of the loading rod and is abutted against the upper plate surface of the lower sample piece, the loading rod is arranged at one end of a lever, a lever body is hinged on an adjusting base, two ends of the lever are respectively provided with a counterweight, one side of the lever in the length direction is provided with a strain gauge sensor which is used for collecting the torsion of lever deformation and transmitting the torsion to a computer, the friction and wear testing machine applies a magnetic field in a contact area of a friction pair through an electromagnetic coil, the loading stability is improved through lever loading, the load, the, And a plurality of experimental parameters such as magnetic field intensity and the like are used for carrying out experimental analysis on tribological characteristics of different friction pairs.
Description
Technical Field
The invention relates to the technical field of testing equipment, in particular to a lever loading type friction wear testing machine capable of controlling a magnetic field environment.
Background
Friction is ubiquitous in life, and tribology also exists as a fundamental science of theory and practice of the action of a mechanical system, and is the study of the frictional behavior between interacting surfaces in relative motion. The existence of friction is sometimes beneficial and sometimes harmful, friction is generated when any two workpieces moving relative to each other contact, abrasion is inevitably generated due to friction, and in order to reduce abrasion between the friction pairs, a mode of adding a lubricant is often adopted to reduce friction resistance, so that the friction pairs are protected. The kind of lubricant is also various, and among them, solid lubricant, liquid lubricant, and gas lubricant can be classified according to the existence state. The method is characterized in that a friction tester simulating working conditions is adopted to test the lubricant, so that the friction wear simulation tester is designed according to the actual working conditions as much as possible, and factors such as the motion form, the structure and the like of the tester for the friction wear test play a critical role in the test result.
As tribology research progresses and advances, new wear, friction materials and lubricants need to be continually evaluated, friction, wear and lubrication mechanisms explored, and factors influencing friction and wear analyzed. The requirements for the function, accuracy and reliability of friction testing devices are also increasing. With the development of industrialization, the actual working conditions of machine tool work become more and more complex, resulting in complex and various friction and wear conditions. Friction testing apparatus and methods are also gradually updated with experimental conditions. However, few researches are made on the friction and wear testing machine designed for the working environment with the existence of the magnetic field, and the invention takes the research as the starting point, develops the reciprocating friction and wear testing machine capable of applying the controllable magnetic field aiming at the existing experimental conditions of the existence of the magnetic field, has the functions of realizing variable load, variable speed and the like, and simulates various magnetic field conditions.
Disclosure of Invention
The purpose of the invention is: a lever loading type friction wear testing machine capable of controlling a magnetic field environment applies a magnetic field to a contact area of a friction pair through an electromagnetic coil, loading stability is improved through lever loading, a plurality of experimental parameters such as load, relative movement speed of the friction pair and magnetic field intensity can be changed simultaneously, and experimental analysis on tribological characteristics of different friction pairs is achieved.
In order to achieve the purpose, the invention adopts the technical scheme that:
The lever loading type friction wear testing machine comprises a magnetic field device, wherein a lower sample piece is arranged in the magnetic field device, a driving mechanism drives the magnetic field device to reciprocate in the horizontal direction, a loading rod is arranged above the lower sample piece, a test steel ball is arranged at the vertical lower end of the loading rod, the test steel ball is abutted against the upper plate surface of the lower sample piece, the loading rod is arranged at one end of a lever, the lever body is hinged to an adjusting base, the hinged shaft of the lever is horizontal and perpendicular to the length direction of the lever, balance weights are arranged at two ends of the lever respectively, a strain gauge sensor is arranged on one side of the lever in the length direction and used for collecting torsion of lever deformation and transmitting the torsion to a computer.
The invention also has the following technical characteristics:
The rod body of the loading rod and one end of the lever form vertical direction thread fit, the counterweight comprises a loading weight sleeved at the upper end of the loading rod, and the other end of the lever is provided with a counterweight.
The magnetic field device comprises an electromagnetic coil which surrounds the lower sample piece.
The magnetic field device comprises a seat body used for installing a lower sample piece, a groove is formed in the middle of the seat body, the lower sample piece is arranged at the bottom of the groove, a lower sample clamp is arranged at the position of a groove opening of the groove, the lower sample clamp is in a flange disc shape, a pipe end of the lower sample clamp abuts against the upper plate surface of the lower sample piece, and the flange installation surface of the lower sample clamp is connected with the seat body through a locking bolt.
The lower end of the loading rod is provided with a steel ball clamp which is of a closed tubular structure, the test steel ball is arranged in a tube cavity of the steel ball clamp, the lower ball body of the test steel ball is exposed out of the tube opening, a clamping bolt is arranged in the steel ball clamp, and the vertical end part of the clamping bolt is abutted against the test steel ball.
The steel ball clamp is fixedly connected with the lower end of the loading rod through a screw.
The base body is arranged on a horizontal rail in a sliding mode, the horizontal rail is fixed on the base, the base body is hinged to one end of an eccentric connecting rod, the other end of the eccentric connecting rod is hinged to the lower end of an eccentric shaft, hinged shafts at two ends of the eccentric connecting rod are vertically arranged, and the eccentric shaft is connected with a driving shaft of a motor.
Be provided with lever bracket on the lever, lever bracket rotary type sets up on the axle, axle level and both ends set up on sliding bottom.
the adjusting base is arranged on the guide rod in a sliding mode, the guide rod is horizontally provided with two groups, and two ends of the guide rod are fixed on the sliding support respectively.
The sliding support rotary type is provided with the threaded rod, the threaded rod level just is parallel with the guide bar, the threaded rod constitutes the threaded connection cooperation with adjusting the base, the one end of threaded rod is provided with shaft coupling and knob.
compared with the prior art, the invention has the beneficial effects that: the lower sample piece is assembled in the magnetic field device to simulate a magnetic field environment, a driving mechanism drives the magnetic field device to reciprocate in the horizontal direction and abuts against a test steel ball at the lower end of a loading rod, the loading rod is arranged at one end of a lever, a lever body is hinged on an adjusting base, the two ends of the lever reach gravity balance by adjusting counterweight objects at the two ends of the lever, then the counterweight object is loaded at one end of the loading rod, the gravity can be accurately obtained, a strain gauge sensor is arranged at one side of the lever in the length direction, the strain gauge sensor collects torsion of lever deformation and transmits the torsion to a computer, and friction force data can be obtained And a plurality of experimental parameters such as magnetic field intensity and the like are used for carrying out experimental analysis on tribological characteristics of different friction pairs.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a lever loading type friction wear testing machine with a controllable magnetic field environment;
FIG. 2 is a schematic diagram of an eccentric structure of a lever loading type friction wear testing machine capable of controlling a magnetic field environment to realize reciprocating motion;
FIG. 3 is a schematic view of a loading lever rotating joint structure in a lever loading type friction wear testing machine with a controllable magnetic field environment;
FIG. 4 is a schematic diagram of the movement of an adjusting base in a lever loading type friction wear testing machine with a controllable magnetic field environment;
Fig. 5 is a sectional view of a magnetic field device and a friction pair jig in a lever loading type friction wear testing machine with a controllable magnetic field environment.
Detailed Description
The invention will be further explained with reference to fig. 1 to 5:
A lever loading type friction wear testing machine capable of controlling a magnetic field environment comprises a magnetic field device 50, wherein a lower sample piece 56 is arranged in the magnetic field device 50, a driving mechanism drives the magnetic field device 50 to reciprocate horizontally, a loading rod 43 is arranged above the lower sample piece 56, a test steel ball 55 is arranged at the vertical lower end of the loading rod 43, the test steel ball 55 abuts against the upper plate surface of the lower sample piece 56, the loading rod 43 is arranged at one end of a lever 40, the rod body of the lever 40 is hinged on an adjusting base 31, the hinge shaft of the lever 40 is horizontal and vertical to the length direction of the lever 40, two ends of the lever 40 are respectively provided with a counterweight, one side of the lever 40 in the length direction is provided with a strain gauge sensor 42, and the strain gauge sensor 42 is used for collecting torsion of the deformation of the lever 40 and transmitting the torsion to a computer;
the lower sample piece 56 is assembled in the magnetic field device 50 to simulate a magnetic field environment, a driving mechanism drives the magnetic field device 50 to reciprocate horizontally and abuts against a test steel ball 55 at the lower end of a loading rod 43, the loading rod 43 is arranged at one end of a lever 40, the lever 40 is hinged on an adjusting base 31, the two ends of the lever 40 reach gravity balance by adjusting counterweight objects at the two ends of the lever 40, then the counterweight object is loaded at one end of the loading rod 43, the gravity balance can be accurately obtained, a strain gauge sensor 42 is arranged at one side of the lever 40 in the length direction, the strain gauge sensor 42 collects the torsion of the lever 40 deformation and transmits the torsion to a computer, and friction force data can be obtained The tribology characteristics of different friction pairs are tested and analyzed by a plurality of experimental parameters such as the relative motion speed of the friction pairs and the magnetic field intensity.
as a preferable scheme of the present invention, the shaft of the loading rod 43 forms a vertical thread fit with one end of the lever 40, the counterweight includes a loading weight 44 sleeved on the upper end of the loading rod 43, and the other end of the lever 40 is provided with a counterweight 41;
The loading rod 43 and one end of the lever 40 are in threaded connection and fit in the vertical direction, the loading rod 43 is screwed, so that the lower end test steel ball 55 of the loading rod 43 is almost in contact with the lower sample piece 56, the balance correction of the lever 40 is adjusted through the loading weight 44 and the counterweight 41, and different numbers of recording weights 44 are placed according to different loading requirements, so that the loading force is conveniently acquired.
Specifically, the magnetic field device 50 includes an electromagnetic coil 58, the electromagnetic coil 58 surrounding the lower sample piece 56;
In order to fix the disc-shaped lower sample 56, the magnetic field device 50 includes a seat body for mounting the lower sample 56, a groove is provided at a middle position of the seat body, the lower sample 56 is disposed at a groove bottom position of the groove, a lower sample clamp 51 is disposed at a notch position of the groove, the lower sample clamp 51 is in a flange disc shape, a tube end abuts against an upper plate surface of the lower sample 56, and a flange mounting surface of the lower sample clamp 51 is connected with the seat body through a locking bolt 57.
in order to fix the steel ball clamp 52 and effectively abut against the lower sample piece 56, the lower end of the loading rod 43 is provided with the steel ball clamp 52, the steel ball clamp 52 is of a closed tubular structure, the test steel ball 55 is arranged in a tube cavity of the steel ball clamp 52, a tube opening is exposed out of a lower ball body, a clamping bolt 53 is arranged in the steel ball clamp 52, and the clamping bolt 53 is vertical and the end of the clamping bolt 53 abuts against the test steel ball 55.
In order to fix the steel ball clamp 52 and the loading rod 43, the steel ball clamp 52 is tightly connected with the lower end of the loading rod 43 through a screw 54.
In order to realize the reciprocating driving of the magnetic field device 50, the base body is slidably disposed on the horizontal rail 11, the horizontal rail 11 is fixed on the base 10, the base body is hinged to one end of the eccentric connecting rod 23, the other end of the eccentric connecting rod 23 is hinged to the lower end of the eccentric shaft 21, the hinge shafts at two ends of the eccentric connecting rod 23 are vertically arranged, and the eccentric shaft 21 is connected to the driving shaft of the motor 20.
for the realization to the rotation installation of lever 40, be provided with lever bracket 32 on the lever 40, lever bracket 32 rotary type sets up on axle 38, axle 38 level and both ends set up on adjusting base 31, the both ends of axle 38 are provided with antifriction bearing 37, antifriction bearing 37 rotary type sets up on adjusting base 31.
in order to conveniently realize the adjustment of the combined abutting position of the test steel ball 55 and the lower sample piece 56, the adjusting base 31 is arranged on the guide rod 33 in a sliding manner, two groups of guide rods 33 are horizontally arranged, and two ends of each guide rod 33 are respectively fixed on the sliding support 30;
the sliding support 30 is rotatably provided with a threaded rod 34, the threaded rod 34 is horizontal and parallel to the guide rod 33, the threaded rod 34 and the adjusting base 31 form threaded connection and matching, and one end of the threaded rod 34 is provided with a coupler 35 and a knob 36;
During adjustment, the knob 36 is screwed to adjust the position of the adjusting base 31 at different positions of the guide rod 33, so as to adjust the position of the lever 40 and the loading rod 43 on the lever.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The utility model provides a lever loading formula friction wear test machine of controllable magnetic field environment which characterized in that: comprises a magnetic field device (50), a lower sample piece (56) is arranged in the magnetic field device (50), a driving mechanism drives the magnetic field device (50) to reciprocate in the horizontal direction, a loading rod (43) is arranged above the lower sample piece (56), the loading rod (43) is vertical, a test steel ball (55) is arranged at the lower end of the loading rod (43), the test steel ball (55) is abutted against the upper plate surface of the lower sample piece (56), the loading rod (43) is arranged at one end of the lever (40), the shaft of the lever (40) is hinged on the adjusting base (31), the hinged shaft of the lever (40) is horizontal and vertical to the length direction of the lever (40), the two ends of the lever (40) are respectively provided with a counterweight, one side of the lever (40) in the length direction is provided with a strain gauge sensor (42), the strain gauge sensor (42) is used for acquiring the torsion of the deformation of the lever (40) and transmitting the torsion into the computer.
2. The lever-loaded friction wear tester with controllable magnetic field environment according to claim 1, characterized in that: the pole body of loading pole (43) constitutes vertical direction screw-thread fit with the one end of lever (40), the counter weight is established loading weight (44) in loading pole (43) upper end including the cover, the other end of lever (40) is provided with counter weight (41).
3. The lever-loaded friction wear tester with a controllable magnetic field environment according to claim 1 or 2, characterized in that: the magnetic field device (50) comprises an electromagnetic coil (58), and the electromagnetic coil (58) surrounds the lower sample piece (56).
4. The lever-loaded friction wear tester with a controllable magnetic field environment according to claim 3, characterized in that: the magnetic field device (50) comprises a seat body used for installing a lower sample piece (56), a groove is formed in the middle of the seat body, the lower sample piece (56) is arranged at the bottom of the groove, a lower sample clamp (51) is arranged at the position of a notch of the groove, the lower sample clamp (51) is in a flange disc shape, the pipe end of the lower sample clamp abuts against the upper plate surface of the lower sample piece (56), and the flange installation surface of the lower sample clamp (51) is connected with the seat body through a locking bolt (57).
5. The lever-loaded friction wear tester with controllable magnetic field environment according to claim 4, wherein: the lower end of the loading rod (43) is provided with a steel ball clamp (52), the steel ball clamp (52) is of a closed tubular structure, a test steel ball (55) is arranged in a tube cavity of the steel ball clamp (52) and a lower ball body of the test steel ball (52) exposes out of the tube opening, a clamping bolt (53) is arranged in the steel ball clamp (52), and the vertical end part of the clamping bolt (53) abuts against the test steel ball (55).
6. The lever-loaded friction wear tester with controllable magnetic field environment according to claim 5, characterized in that: the steel ball clamp (52) is fixedly connected with the lower end of the loading rod (43) through a screw (54).
7. The lever-loaded friction wear tester with controllable magnetic field environment according to claim 4, wherein: the base body is arranged on a horizontal rail (11) in a sliding mode, the horizontal rail (11) is fixed on a base (10), the base body is hinged to one end of an eccentric connecting rod (23), the other end of the eccentric connecting rod (23) is hinged to the lower end of an eccentric shaft (21), hinged shafts at two ends of the eccentric connecting rod (23) are vertically arranged, and the eccentric shaft (21) is connected with a driving shaft of a motor (20).
8. The lever-loaded friction wear tester with controllable magnetic field environment according to claim 2, characterized in that: be provided with lever bracket (32) on lever (40), lever bracket (32) rotary type sets up on axle (38), axle (38) level and both ends set up on adjusting base (31).
9. the lever-loaded friction wear tester with controllable magnetic field environment according to claim 8, wherein: the adjusting base (31) is arranged on the guide rod (33) in a sliding mode, the guide rod (33) is horizontally provided with two groups, and two ends of the two groups are respectively fixed on the sliding support (30).
10. The lever-loaded friction wear tester with controllable magnetic field environment according to claim 9, wherein: sliding bracket (30) rotary type is provided with threaded rod (34), threaded rod (34) level and parallel with guide bar (33), threaded rod (34) constitute the threaded connection cooperation with regulation base (31), the one end of threaded rod (34) is provided with shaft coupling (35) and knob (36).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911074341.2A CN110579418A (en) | 2019-11-06 | 2019-11-06 | lever loading type friction wear testing machine capable of controlling magnetic field environment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911074341.2A CN110579418A (en) | 2019-11-06 | 2019-11-06 | lever loading type friction wear testing machine capable of controlling magnetic field environment |
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| CN110579418A true CN110579418A (en) | 2019-12-17 |
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| CN201911074341.2A Pending CN110579418A (en) | 2019-11-06 | 2019-11-06 | lever loading type friction wear testing machine capable of controlling magnetic field environment |
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Cited By (9)
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| CN111141600A (en) * | 2019-12-31 | 2020-05-12 | 宁波大学 | Compact pipeline test piece fatigue test system |
| CN111830121A (en) * | 2020-07-26 | 2020-10-27 | 吉林大学 | Device and method for testing magnetic deformation material under controllable magnetic field environment |
| CN112033651A (en) * | 2020-07-08 | 2020-12-04 | 人本股份有限公司 | Lever assembly for counterweight test |
| CN112198075A (en) * | 2020-10-14 | 2021-01-08 | 江苏科技大学 | Thin-wall bearing and cross beam electric brush current-carrying friction experiment device |
| CN112540019A (en) * | 2020-12-04 | 2021-03-23 | 合肥工业大学 | High-speed friction interface optical in-situ observation precision friction and wear testing machine |
| CN113176166A (en) * | 2021-04-26 | 2021-07-27 | 安徽工程大学 | Magnetic fluid sample magnetic field intensity adjusting device and using method |
| CN113310787A (en) * | 2021-07-08 | 2021-08-27 | 济南大学 | Multifunctional friction wear test device under controllable stable magnetic field environment |
| CN113358509A (en) * | 2021-05-07 | 2021-09-07 | 上海交通大学 | Full-automatic glass surface abrasion resistance testing device and method |
| CN114088398A (en) * | 2021-09-26 | 2022-02-25 | 武汉晶泰科技股份有限公司 | Test method for evaluating performance of bearing rolling body |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112198075A (en) * | 2020-10-14 | 2021-01-08 | 江苏科技大学 | Thin-wall bearing and cross beam electric brush current-carrying friction experiment device |
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| CN113176166A (en) * | 2021-04-26 | 2021-07-27 | 安徽工程大学 | Magnetic fluid sample magnetic field intensity adjusting device and using method |
| CN113358509A (en) * | 2021-05-07 | 2021-09-07 | 上海交通大学 | Full-automatic glass surface abrasion resistance testing device and method |
| CN113310787A (en) * | 2021-07-08 | 2021-08-27 | 济南大学 | Multifunctional friction wear test device under controllable stable magnetic field environment |
| CN113310787B (en) * | 2021-07-08 | 2022-11-01 | 济南大学 | Multifunctional friction wear test device under controllable stable magnetic field environment |
| CN114088398A (en) * | 2021-09-26 | 2022-02-25 | 武汉晶泰科技股份有限公司 | Test method for evaluating performance of bearing rolling body |
| CN114088398B (en) * | 2021-09-26 | 2023-11-17 | 武汉晶泰科技股份有限公司 | Test method for evaluating performance of bearing rolling body |
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