CN111487153A - Bidirectional variable-speed variable-load contact lubrication abrasion integrated tester - Google Patents
Bidirectional variable-speed variable-load contact lubrication abrasion integrated tester Download PDFInfo
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- CN111487153A CN111487153A CN202010380377.XA CN202010380377A CN111487153A CN 111487153 A CN111487153 A CN 111487153A CN 202010380377 A CN202010380377 A CN 202010380377A CN 111487153 A CN111487153 A CN 111487153A
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
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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
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Abstract
The invention relates to a bidirectional variable-speed variable-load contact lubrication wear integrated tester, and belongs to the technical field of load contact lubrication wear. The device comprises a frame, a loading device, a steel ball driving device, a glass disc driving device, a cam driving device and an optical acquisition system; the steel ball and the glass disc form point contact under the condition of variable load, the glass disc (or the metal disc), the steel ball and the cam are driven by the motor to be in contact and move relatively under the condition of a certain regular load, an optical microscope and a CCD (charge coupled device) camera are used for acquiring an oil film image of a contact area and transmitting the oil film image to a computer, so that the thickness and the appearance of an elastic hydrodynamic lubrication oil film formed by the steel ball and the glass disc can be observed and stored in real time, or the abrasion condition between the steel ball and the metal disc can be researched. The invention has simple structure, strong practicability and reliable work, and provides a reliable experimental device for researching the lubrication or abrasion problem of bidirectional (axial and circumferential) speed change point contact under the condition of variable load.
Description
Technical Field
The invention relates to a bidirectional variable-speed variable-load contact lubrication wear integrated tester, and belongs to the technical field of load contact lubrication wear.
Background
Bearings, gears and industrial chains in machines generate lateral vibrations perpendicular to the main direction of motion during operation for various reasons, resulting in speed variations of the machine elements in both directions of the working plane. In the existing optical elastic fluid dynamic lubrication abrasion test machine, only the speed change in one direction can be simulated, so that the actual working condition cannot be accurately and effectively simulated. In addition, because mechanical motion may be under variable load conditions, prior elastohydrodynamic lubrication testing machines have not been able to test for point contact in the presence of both directional speed changes and variable load conditions.
In summary, no experimental machine for studying the point contact lubrication or wear problem of bidirectional (axial and circumferential) speed change under variable load condition exists. Therefore, the technical field needs to design a bidirectional speed-changing variable-load contact lubrication abrasion integrated experimental device so as to better simulate the actual working condition, so that the lubrication and abrasion characteristics of the bidirectional (axial and circumferential) speed-changing point contact of mechanical elements such as bearings under the variable load condition can be better researched, and the shape and thickness of an oil film and the abrasion condition of a test piece can be measured.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the prior art can not effectively and accurately simulate the actual working condition of point contact bidirectional (axial and circumferential) speed change under the variable load condition in the field of optical elastic fluid dynamic lubrication, and can not accurately carry out lubrication and wear experiments.
In order to solve the technical problem, the technical scheme of the invention is to provide a bidirectional variable-speed variable-load contact lubrication wear integrated testing machine, which is characterized in that: including frame, loading device, steel ball drive arrangement, glass dish drive arrangement, cam drive arrangement and optical acquisition system, wherein:
the steel ball driving device, the glass disc driving device and the cam driving device are arranged on the frame;
the steel ball driving device is used for driving the steel ball; when a lubrication experiment is carried out, the glass disc driving device is used for driving the glass disc, and when a wear experiment is carried out, the glass disc driving device is used for driving the metal disc;
the loading device is used for enabling the upper end of the steel ball to be in contact connection with the lower surface of the glass disc or the metal disc and applying variable load to the steel ball;
the cam driving device is used for changing the speed of the steel ball in the axial direction;
the steel ball is contacted with the glass disc or the metal disc under the action of the ball driving device, the glass disc driving device, the cam driving device and the loading device and moves relatively under a certain regular pressure;
and the optical acquisition system is used for acquiring an oil film image or abrasion condition generated after the steel ball and the glass move relatively.
Preferably, the steel ball driving device comprises a motor bracket I, a motor I, a coupling I, a steel ball connecting rod and a steel ball; the first motor support is arranged on the frame, the first motor is arranged on the first motor support, the first motor is connected with one end of the roller connecting rod through the coupling, and the other end of the roller connecting rod is provided with a steel ball.
Preferably, the glass disc driving device comprises a glass disc or a metal disc, a glass disc sleeve end cover, a glass disc gland, a self-aligning roller bearing, a second coupling, a second motor bracket and a second motor; the second motor support is arranged on the frame, the second motor is arranged on the second motor support, the second motor is connected with one end of the glass disc rotating rod through the second coupler, and the other end of the glass disc rotating rod is provided with the glass disc or the metal disc and the glass disc gland; the glass plate sleeve is arranged on the frame, a self-aligning roller bearing is arranged in the glass plate sleeve, a glass plate sleeve end cover is arranged above the glass plate sleeve, and the middle part of the glass plate rotating rod penetrates through the glass plate sleeve end cover and then is sleeved in the self-aligning roller bearing.
Preferably, rubber pads are respectively arranged between the glass disc rotating rod and the glass disc or the metal disc and between the glass disc or the metal disc and the glass disc pressing cover.
Preferably, the loading device comprises a steel ball clamp, a loading supporting plate, a bearing seat, a loading sleeve, a thimble, a third coupling, a third motor support, a reducer and a third motor; a motor bracket III is arranged on a lower table surface arranged on the frame; a loading sleeve is arranged below an upper table top arranged on the frame; a speed reducer is arranged on the motor bracket III, one end of the speed reducer is connected with the motor bracket III, and the other end of the speed reducer is connected with a loading rod arranged at one end of a loading sleeve through a coupling III; a thimble arranged at the other end of the loading sleeve penetrates through the upper table top to be in contact connection with a lower plate surface of a loading supporting plate arranged on the upper table top; and the upper plate surface of the loading supporting plate is provided with a steel ball clamp which is connected with the steel ball in a supporting way.
Preferably, the loading supporting plate is connected to the upper table top through a bearing seat, the thimble penetrates through the upper table top to support and connect one end of the lower plate surface of the loading supporting plate, and the upper plate surface in the middle of the loading supporting plate is provided with a steel ball clamp.
Preferably, the steel ball clamp comprises a clamp shell with a concave structure, and the bottom of the concave structure is arranged on the loading supporting plate; the inside of anchor clamps shell is equipped with two sets of bearings side by side, and the bearing is connected with the anchor clamps shell through running through in the bearing axle of anchor clamps shell, the steel ball is located the top of two sets of bearings side by side.
Preferably, one end of a thimble arranged on the loading sleeve penetrates through the upper table-board, and the other end of the thimble is connected with the loading rod through a cylinder core arranged in the loading sleeve; one end of the cylinder core is connected with the thimble, the other end of the cylinder core is tubular, and one end of the loading rod is arranged in the end part of the tubular cylinder core; springs are sleeved on the periphery of the tube core and the outer circumference of the loading rod; and a loading disc for enabling the spring to be in a compressed state is further sleeved on the outer circumference of the loading rod, and a limiting structure for preventing the loading rod from sliding off from the loading sleeve is arranged between the loading rod and the loading sleeve.
Preferably, the limiting structure comprises a loading barrel end cover arranged at the bottom end of the loading barrel, a self-aligning ball bearing is arranged on the loading barrel end cover, and the other end of the loading rod penetrates through the self-aligning ball bearing and the loading barrel end cover to be connected with the speed reducer; a pressure sensor for measuring the stress of the thimble in real time is arranged between the thimble and the cylinder core; and an open slot for adjusting the position of the loading disc is arranged on the side wall of the loading sleeve in the axial direction parallel to the central axis of the loading sleeve.
Preferably, the cam driving device comprises a motor support IV arranged on the frame, a motor IV is arranged on the motor support IV, the motor IV is connected with one end of a cam connecting rod through a coupler IV, and a cam is arranged at the other end of the cam connecting rod.
Compared with the prior art, the invention has the following beneficial effects:
(1) the device can clamp the steel ball, the glass disc or the metal disc, the steel ball and the glass disc or the metal disc can form point contact under certain load through the loading device, the steel ball can move in a variable speed manner in the axial direction and the circumferential direction through the steel ball driving device and the cam driving device, and the glass disc is provided with the own driving device, so that the practicability and the reliability of the test are improved;
(2) the steel ball can be in contact connection with the glass disc or the metal disc to form point contact, and variable load is applied to the steel ball by the loading device according to a certain rule;
(3) the elastic hydrodynamic lubrication oil film image formed by the steel ball and the glass disc or the metal disc can be observed and stored in real time, and the shape and the thickness of the oil film can be measured.
Drawings
FIG. 1 is a schematic structural diagram of a main body of a bidirectional variable-speed variable-load contact lubrication wear integrated testing machine provided by the invention;
FIG. 2 is a structure diagram of the upper table top of a bidirectional variable load contact lubrication wear integrated testing machine provided by the present invention;
FIG. 3 is a top view of a main structure of a bi-directional variable-speed variable-load contact lubrication wear integrated testing machine provided by the present invention;
fig. 4A and 4B are a front view and a top view of a steel ball clamp of a bidirectional variable-speed variable-load contact lubrication wear integrated testing machine provided by the invention.
Reference numerals: 1. an upper table top; 2. a glass disk sleeve; 3. a glass plate; 4. a self-aligning roller bearing; 5. a glass disk sleeve end cap; 6. a rubber pad; 7. a glass disc gland; 8. a glass disk rotation lever; 9. a cam; 10. a steel ball connecting rod; 11. a first double nut; 12. a steel ball; 13. a steel ball clamp; 14. loading a supporting plate; 15. a bearing seat; 16. a first coupler; 17. a first motor bracket; 18. a first motor; 19. a loading sleeve; 20. a thimble; 21. a pressure sensor; 22. a barrel core; 23. a spring; 24. a loading tray; 25. a loading rod; 26. a self-aligning ball bearing; 27. loading a cylinder end cover; 28. a third coupler; 29. a motor bracket III; 30. a speed reducer; 31. a third motor; 32. a lower table top; 33. a pillar; 34. a second motor; 35. a second motor bracket; 36. a second coupler; 37. a second double nut; 38. a cam link; 39. a motor bracket IV; 40. a fourth motor; 41. and a fourth coupler.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
As shown in fig. 1 to fig. 3 and fig. 4A and fig. 4B, the bidirectional variable speed and variable load contact lubrication wear integrated testing machine provided by the present invention comprises a frame, a loading device, a steel ball driving device, a glass disc driving device, a cam driving device and an optical acquisition system. For ease of illustration, only the cam 9 of the cam drive is shown in figure 1. The upper table-board 1 arranged on the frame is provided with a steel ball driving device, a glass disc driving device and a cam driving device. The upper part of the steel ball 12 driven by the steel ball driving device is in point contact connection with the lower surface of the glass disc 3 driven by the glass disc driving device. A loading device for applying variable load to the steel ball is arranged below the steel ball 12 driven by the steel ball driving device. An optical acquisition system for acquiring an oil film image is arranged above the position where the steel ball 12 driven by the steel ball driving device is contacted with the glass disc 3 driven by the glass disc driving device.
In the present embodiment, the frame is configured such that: four supporting columns 33 are respectively connected with the upper table top 1 and the lower table top 32 through screws to form the frame of the experiment machine.
The steel ball driving device comprises a motor bracket I17, a motor I18, a coupling I16, a double nut I11, a steel ball connecting rod 10 and a steel ball 12. A first motor support 17 is arranged on an upper table top 1 arranged on the frame, a first motor 18 is arranged on the first motor support 17, the first motor 18 is connected with one end of a steel ball connecting rod 10 through a first coupling 16, and a steel ball 12 is arranged at the other end of the steel ball connecting rod 10.
In this embodiment, the first motor bracket 17 is an L-shaped plate structure, the lower side plate of the first motor bracket is provided with two strip-shaped through holes for being screwed with the upper table board 1, the side plate is provided with a circular through hole and four small threaded through holes for being screwed with the first motor 18, a through hole is processed in the center of the steel ball 12, and the steel ball connecting rod 10 is fastened by a double nut 11 after penetrating the through hole.
The glass disc driving device comprises a glass disc 3, a self-aligning roller bearing 4, a glass disc sleeve end cover 5, a rubber pad 6, a glass disc gland 7, a glass disc rotating rod 8, a second coupling 36, a second motor support 35 and a second motor 34. The lower surface of the upper table board 1 arranged on the frame is provided with a second motor support 35, and the side wall of the second motor support 35 is provided with an open slot for adjusting the tightness of the second coupler 36. A second motor 34 is arranged on the second motor support 35, the second motor 34 is connected with one end of the glass disc rotating rod 8 through a second coupler 36, the other end of the glass disc rotating rod 8 is provided with a glass disc 3, a glass disc pressing cover 7 is arranged above the glass disc 3, and the glass disc pressing cover 7 is in threaded connection with the glass disc rotating rod. The upper table top 1 arranged on the frame is provided with a glass disc sleeve 2, and a self-aligning roller bearing 4 is arranged in the glass disc sleeve 2. The outer circumference of the lower end of the glass disc rotating rod 8 is sleeved in the self-aligning roller bearing 4. Rubber pads 6 are respectively arranged between the glass disc 3 and the glass disc rotating rod 8 and between the glass disc 3 and the glass disc gland 7.
In this embodiment, a glass plate 3 or a metal plate may be used according to experimental needs. One end of the second motor bracket 35 is connected with the lower part of the upper table board 1 of the frame through a screw, and the other end of the second motor bracket is connected with the second motor 34 through a screw. One end of the glass disc rotating rod 8 is connected with a motor 34 through a coupling 36 by a screw. The glass disk press cover 7 is screw-coupled with the glass disk rotating rod 8 to fix the glass disk 3. The glass disc sleeve 2 is connected on the upper surface of the upper table-board 1 of the frame through screws, and a self-aligning roller bearing 4 is arranged in the glass disc sleeve. The upper end of the glass disc sleeve 2 is in screw connection with a glass disc sleeve end cover 5.
The loading device comprises a steel ball clamp 13, a loading supporting plate 14, a bearing seat 15, a loading sleeve 19, a thimble 20, a third coupling 28, a third motor support 29, a speed reducer 30 and a third motor 31. The frame is provided with a reducer bracket 29 on a lower table 32. The loading sleeve 19 is arranged below the upper table-board 1 arranged on the frame. A speed reducer 30 is arranged on the motor support III 29, one end of the speed reducer 30 is connected with a motor III 31, and the other end of the speed reducer 30 is connected with a loading rod 25 arranged at one end of the loading sleeve 19 through a coupling III 28. The thimble 20 arranged at the other end of the loading sleeve 19 passes through the upper table top 1 to be in contact connection with the lower plate surface of the loading supporting plate 14 arranged on the upper table top 1. The upper plate surface of the loading supporting plate 14 is provided with a steel ball clamp 13, and the steel ball clamp 13 supports a steel ball 12 driven by a steel ball driving device. The load pallet 14 is attached to the upper deck surface 1 by means of a bearing block 15. The steel ball clamp 13 comprises a clamp housing of a concave structure, and the bottom of the concave structure is arranged on the loading support plate 14. Two groups of bearings are arranged in the shell of the steel ball clamp 13 side by side, the bearings are connected with the shell of the clamp through bearing shafts penetrating through the shell of the clamp, and the steel ball 12 driven by the roller driving device is arranged above the two groups of bearings side by side. In the embodiment, the clamp shell is of a concave structure, the upper parts of two sides of the clamp shell are respectively provided with a strip-shaped pressing strip, and the strip-shaped pressing strips are connected with the main body of the clamp shell through screws; each bearing shaft is provided with 1 group of bearings, and then the bearing shaft provided with the bearings is arranged on the clamp shell; in the experiment, the steel ball 12 is placed between two sets of bearings in the steel ball fixture 13 so that the loading device applies a load to the steel ball 12 through the steel ball fixture 13. The loading sleeve 19 is provided with a thimble 20, one end of which passes through the upper table-board 1, and the other end of which is connected with a loading rod 25 through a cylinder core 22 arranged in the loading sleeve 19. One end of the cylinder core 22 is connected with the thimble 20, the other end of the cylinder core 22 is tubular, and one end of the loading rod 25 is arranged in the tube. The spring 23 is fitted around the outer circumference of the tube of the core 22 and the outer circumference of the loading rod 25. The outer circumference of the loading rod 25 is also sleeved with a loading disc 24 for putting the spring 23 in a compressed state. A limit structure for preventing the loading rod 25 from sliding from the loading sleeve 19 is arranged between the loading rod 25 and the loading sleeve 19. The limiting structure comprises a loading barrel end cover 27 arranged at the barrel bottom end of the loading sleeve 19, a self-aligning ball bearing 26 is arranged on the loading barrel end cover 27, and the other end of the loading rod 25 penetrates through the self-aligning ball bearing 26 and the loading barrel end cover 27 to be connected with a speed reducer 30. A pressure sensor 21 for measuring the stress of the thimble 20 in real time is arranged between the thimble 20 and the cylinder core 22. An open slot for adjusting the position of the loading disc 24 is arranged on the side wall of the loading sleeve 19 in the axial direction parallel to the central axis of the loading sleeve 19.
In this embodiment, the thimble 20, the pressure sensor 21 and the cylinder core 22 are connected in sequence by using a strong glue, so that the pressure sensor 21 can measure the force applied to the thimble 20 in real time. A tube for connecting one end of a loading rod 25 is processed at one end of the cylinder core 22, a spring 23 is sleeved on the tube, then the loading rod 25 provided with a loading disc 24 is installed in the cylinder core 22, wherein the loading disc 24 is sleeved on the periphery of the loading rod 25, and the position of the loading disc 24 on the loading rod 25 is adjusted until two ends of the spring 23 are contacted with the base of the cylinder core 22 and the loading disc 24 and are in a pressed state. After the lower end of the loading rod 25 is installed into the self-aligning ball bearing 26, the assembled part from the thimble 20 to the self-aligning ball bearing 26 is integrally installed into the loading sleeve 19, then the loading cylinder end cover 27 is installed at the bottom of the loading sleeve 19, and the loading sleeve 19 is in screw connection with the loading cylinder end cover 27. The loading sleeve 19 is screwed to the upper deck 1 in order to fix the loading device and to support the load. The right side wall of the loading sleeve 19 is axially provided with a strip-shaped hole, and after the loading disc 24 is positioned, a screw is used for penetrating and screwing the strip-shaped hole from outside to inside into a threaded hole on the loading disc 24 so as to fix the circumference of the loading disc 24. The motor bracket III 29 is of a C-shaped plate structure, and the upper surface of the motor bracket III is provided with a large circular through hole and four small threaded through holes so as to be in screw connection with the speed reducer 30; the lower surface has two through holes in the form of strips for screw-fastening to the lower deck 32. The speed reducer 30 is connected with a motor III 31 through screws and is connected with the loading rod 25 through a coupling III 28.
The cam driving device comprises a motor support IV 39 on the upper table board 1, a motor 40 is arranged on the motor support IV 39, the motor 40 is connected with one end of a cam connecting rod 41 through a coupler 41, a cam 9 is arranged at the other end of the cam connecting rod 41, and the cam 9 is fastened on the cam connecting rod through a double nut II 37.
In this embodiment, the motor bracket four 39 is an L-type plate structure, and two strip-shaped through holes are formed in the bottom plate of the motor bracket four 39, so that the motor bracket four can be connected with the upper table board 1 through screws, and a circular through hole and four small threaded through holes are formed in the side plate of the motor bracket four 39, so that the motor bracket four 40 can be connected with the motor bracket four 40 through screws.
In this embodiment, the optical acquisition system is composed of a light source, a CCD camera and an optical microscope, and the CCD camera and the optical microscope are connected to a computer. The tester mainly comprises a frame, a loading device, a steel ball driving device, a glass disc or metal disc driving device, a cam driving device and a steel ball clamp 13.
The working principle of the experimental machine is that a P L C and a servo motor relay are used for driving a motor III 31 to rotate, a reducer 30 and a coupling III 28 are used for driving a loading rod 23 to rotate, a loading disc 24 is circumferentially fixed, therefore, the loading rod can only move up and down along the loading rod 25, and is loaded or unloaded through a spring 23, so that a steel ball 12 is in contact with a glass disc 3 and can apply variable loads with a certain rule, a P L C and a servo motor driving motor I18 are used for driving the steel ball 12 to rotate through a coupling I16 and a steel ball connecting rod 10, a P L C and a servo motor driving motor II 34 are used for driving the glass disc 3 to rotate through a coupling II 36 and a glass disc connecting rod 8, a P L C and a servo motor driving motor IV 40 are used for driving a cam 9 through a coupling IV 41 and a cam connecting rod 38, when the cam 9 rotates, the steel ball connecting rod 10 in the steel ball driving device is periodically pushed, so that the steel ball 12 and the glass disc 3 are in contact with each other under the action of a driving device, the cam and the pressure of the coupling IV and the cam connecting device, the optical film motion is used for collecting images of a microscope, and the image collecting system is used for calculating the microscope and the image collecting system which is connected with the CCD and is connected with.
When the tester is used for testing, the P L C and the servo driver are used for driving the motor III 31 to slowly rotate, the steel ball 12 is loaded to be just in contact with the glass disc 3, the pressure sensor 21 is zeroed, then the P L C and the servo relay are used for driving the motor I18, the motor II 34 and the motor IV 40, so that the steel ball 12, the glass disc 3 and the cam 9 are driven to move, a microscope and a CCD camera which are positioned above a contact area of the steel ball 12 and the glass disc 3 collect contact oil film images in real time and transmit the contact oil film images to a computer, if the test under a variable load condition is needed, the motor III 31 is driven to move according to a certain rule, so that a variable load is applied to the contact area formed by the steel ball 12 and the glass disc 3 through the loading device, an optical collecting system consisting of a light source, the CCD camera and an optical microscope is used for obtaining the oil film images of the contact area, and the thickness.
When the abrasion test is carried out by using the abrasion test device, the glass disc in the test process is only replaced by the metal disc with the same specification, and the principle is approximately the same as the test method. After the wear test is completed, the wear conditions of the steel ball 12 and the metal disc are measured by using a surface topography instrument and the like.
Claims (10)
1. The utility model provides an integrative experimental machine of two-way variable speed variable load contact lubrication wearing and tearing which characterized in that: including frame, loading device, steel ball drive arrangement, glass dish drive arrangement, cam drive arrangement and optical acquisition system, wherein:
the steel ball driving device, the glass disc driving device and the cam driving device are arranged on the frame;
the steel ball driving device is used for driving the steel ball; when a lubrication experiment is carried out, the glass disc driving device is used for driving the glass disc, and when a wear experiment is carried out, the glass disc driving device is used for driving the metal disc;
the loading device is used for enabling the upper end of the steel ball to be in contact connection with the lower surface of the glass disc or the metal disc and applying variable load to the steel ball;
the cam driving device is used for changing the speed of the steel ball in the axial direction;
the steel ball is contacted with the glass disc or the metal disc under the action of the ball driving device, the glass disc driving device, the cam driving device and the loading device and moves relatively under a certain regular pressure;
and the optical acquisition system is used for acquiring an oil film image or abrasion condition generated after the steel ball and the glass move relatively.
2. The two-way speed-changing variable-load contact lubrication wear integrated testing machine as claimed in claim 1, wherein the steel ball driving device comprises a motor bracket I, a motor I, a coupling I, a steel ball connecting rod and a steel ball; the first motor support is arranged on the frame, the first motor is arranged on the first motor support, the first motor is connected with one end of the roller connecting rod through the coupling, and the other end of the roller connecting rod is provided with a steel ball.
3. The two-way variable speed variable load contact lubrication wear integrated test machine according to claim 1, characterized in that: the glass disc driving device comprises a glass disc or a metal disc, a glass disc sleeve end cover, a glass disc gland, a self-aligning roller bearing, a second coupling, a second motor support and a second motor; the second motor support is arranged on the frame, the second motor is arranged on the second motor support, the second motor is connected with one end of the glass disc rotating rod through the second coupler, and the other end of the glass disc rotating rod is provided with the glass disc or the metal disc and the glass disc gland; the glass plate sleeve is arranged on the frame, a self-aligning roller bearing is arranged in the glass plate sleeve, a glass plate sleeve end cover is arranged above the glass plate sleeve, and the middle part of the glass plate rotating rod penetrates through the glass plate sleeve end cover and then is sleeved in the self-aligning roller bearing.
4. The two-way variable speed variable load contact lubrication wear integrated test machine according to claim 3, wherein: rubber pads are respectively arranged between the glass disc rotating rod and the glass disc or the metal disc and between the glass disc or the metal disc and the glass disc gland.
5. The two-way variable speed variable load contact lubrication wear integrated test machine according to claim 3, wherein: the loading device comprises a steel ball clamp, a loading supporting plate, a bearing seat, a loading sleeve, a thimble, a third coupling, a third motor support, a reducer and a third motor; a motor bracket III is arranged on a lower table surface arranged on the frame; a loading sleeve is arranged below an upper table top arranged on the frame; a speed reducer is arranged on the motor bracket III, one end of the speed reducer is connected with the motor bracket III, and the other end of the speed reducer is connected with a loading rod arranged at one end of a loading sleeve through a coupling III; a thimble arranged at the other end of the loading sleeve penetrates through the upper table top to be in contact connection with a lower plate surface of a loading supporting plate arranged on the upper table top; and the upper plate surface of the loading supporting plate is provided with a steel ball clamp which is connected with the steel ball in a supporting way.
6. The two-way variable speed variable load contact lubrication wear integrated test machine according to claim 5, wherein: the loading support plate is connected to the upper table top through a bearing seat, the ejector pin penetrates through the upper table top to support and connect one end of the lower plate surface of the loading support plate, and a steel ball clamp is arranged on the upper plate surface of the middle of the loading support plate.
7. The two-way variable speed variable load contact lubrication wear integrated test machine according to claim 6, wherein: the steel ball clamp comprises a clamp shell with a concave structure, and the bottom of the concave structure is arranged on the loading supporting plate; the inside of anchor clamps shell is equipped with two sets of bearings side by side, and the bearing is connected with the anchor clamps shell through running through in the bearing axle of anchor clamps shell, the steel ball is located the top of two sets of bearings side by side.
8. The two-way variable speed variable load contact lubrication wear integrated test machine according to claim 7, wherein: one end of a thimble arranged on the loading sleeve penetrates through the upper table-board, and the other end of the thimble is connected with the loading rod through a cylinder core arranged in the loading sleeve; one end of the cylinder core is connected with the thimble, the other end of the cylinder core is tubular, and one end of the loading rod is arranged in the end part of the tubular cylinder core; springs are sleeved on the periphery of the tube core and the outer circumference of the loading rod; and a loading disc for enabling the spring to be in a compressed state is further sleeved on the outer circumference of the loading rod, and a limiting structure for preventing the loading rod from sliding off from the loading sleeve is arranged between the loading rod and the loading sleeve.
9. The two-way variable speed variable load contact lubrication wear integrated test machine according to claim 8, wherein: the limiting structure comprises a loading barrel end cover arranged at the bottom end of the loading barrel, a self-aligning ball bearing is arranged on the loading barrel end cover, and the other end of the loading rod penetrates through the self-aligning ball bearing and the loading barrel end cover to be connected with the speed reducer; a pressure sensor for measuring the stress of the thimble in real time is arranged between the thimble and the cylinder core; and an open slot for adjusting the position of the loading disc is arranged on the side wall of the loading sleeve in the axial direction parallel to the central axis of the loading sleeve.
10. The two-way variable speed variable load contact lubrication wear integrated test machine of claim 9, wherein: the cam driving device comprises a motor support IV arranged on the frame, a motor IV is arranged on the motor support IV, the motor IV is connected with one end of a cam connecting rod through a coupler IV, and a cam is arranged at the other end of the cam connecting rod.
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