Mo-bi synergistic lubrication experiment friction pair test tool matched with ti-o-n coating

Abstract

The utility model discloses a molybdenum - bismuth collaborative lubrication experiment friction pair test frock matched with Ti O N coating, including the box, the front end hinged of box has the protective door, and the inside upper and lower sides of box are equipped with placing platform and workstation respectively still include installing mechanism, installing mechanism: it includes cross bar, connecting plate, adjusting plate, adjusting lever and fixed assembly, the cross bar is arranged respectively in the downside inside workbench and placing platform, and the sliding hole sliding connection of corresponding setting of the left end of two cross bars with a connecting plate is arranged respectively, and the left end of two connecting plates all is equipped with adjusting plate, and the middle part of adjusting plate front end all is equipped with adjusting groove, and the inside workbench and placing platform all are equipped with adjusting lever, and this molybdenum - bismuth collaborative lubrication experiment friction pair test frock matched with Ti O N coating, when fixing coating test piece, the pressure and impact force that coating test piece generates are relatively smaller, guarantee the integrity of coating test piece while also improved the accuracy of experiment.

Description

Technical Field

[0001] This utility model relates to the field of friction testing technology, specifically to a testing fixture for a molybdenum-bismuth synergistic lubrication friction pair that is compatible with Ti-ON coating. Background Technology

[0002] Ti-ON coating is a high-performance ceramic coating with good wear resistance, corrosion resistance, and a low coefficient of friction. Molybdenum-bismuth synergistic lubricant is a composite lubricant that typically exhibits good lubrication performance and friction reduction. The experimental friction pair test fixture for molybdenum-bismuth synergistic lubrication, used in conjunction with the Ti-ON coating, can simulate the reciprocating friction between the molybdenum-bismuth synergistic lubricant and the Ti-ON coating under actual working conditions. Subsequent observation of the wear condition of the Ti-ON coating can evaluate its wear resistance and friction reduction effect; similarly, observing the wear condition of the molybdenum-bismuth synergistic lubricant can evaluate its lubrication performance and friction reduction effect. (Prior art: Authorization publication number CN 208767276) U's patent discloses a fixing fixture for chip bonding, including a housing. A miniature vacuum pump is fixedly installed on the bottom inner wall of the housing. Two fixing plates are fixedly installed on the bottom inner wall of the housing to the right of the miniature vacuum pump. A box penetrating the right side of the housing is inserted into the right side of the fixing plates. A dustproof net is fixedly installed on the bottom left side of the box. Although this device can fix the chip by vacuum adsorption, when the vacuum system is started, the air is rapidly extracted, forming a negative pressure. This process is very rapid and may generate instantaneous high pressure on the chip. Instantaneous high pressure can cause local high stress on the chip surface, especially at the chip edges and contact points. These high stress areas may cause local deformation or damage to the chip, thus reducing the chip's integrity. To address this, we propose a molybdenum-bismuth synergistic lubrication experimental friction pair test fixture that is compatible with Ti-ON coating. Utility Model Content

[0003] The technical problem this invention aims to solve is to overcome existing defects and provide a testing fixture for a molybdenum-bismuth synergistic lubrication experimental friction pair that is compatible with Ti-ON coatings. Through the coordinated arrangement of an adjusting plate and an adjusting rod, the fixture can move fixed plate one and fixed plate two, thereby fixing the coating sample one and coating sample two. This replaces the traditional method of fixing the coating sample through vacuum adsorption, resulting in relatively less pressure and impact on the coating sample. This ensures the integrity of the coating sample while improving the accuracy of the experiment, effectively solving the problems in the background technology.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a test fixture for molybdenum-bismuth synergistic lubrication experimental friction pair that is compatible with Ti-ON coating, including a box, a protective door hinged to the front end of the box, a placement platform and a worktable respectively on the upper and lower sides inside the box, and an installation mechanism.

[0005] The installation mechanism includes a crossbar, a connecting plate, an adjusting plate, an adjusting rod, and a fixing component. The crossbars are respectively located on the lower side inside the workbench and the placement platform. Two longitudinally adjacent crossbars are slidably connected to sliding holes corresponding to the left ends of a connecting plate. Adjusting plates are provided at the left ends of both connecting plates, and adjusting grooves are provided in the middle of the front end of each adjusting plate. Adjusting rods are provided inside the workbench and the placement platform, with two adjusting rods located inside vertically adjacent adjusting grooves. The fixing component is respectively located inside the workbench and the placement platform. Through the cooperation of the adjusting plate and the adjusting rod, it can drive the fixing plate one and the fixing plate two to move, thereby fixing the coating sample one and the coating sample two. This replaces the traditional method of fixing the coating sample by vacuum adsorption, resulting in relatively less pressure and impact on the coating sample, ensuring the integrity of the coating sample while improving the accuracy of the experiment.

[0006] Furthermore, a controller is provided at the right end of the enclosure. The input terminal of the controller is electrically connected to an external power source, enabling it to regulate the electrical components inside the device.

[0007] Furthermore, the installation mechanism also includes sealing plates and adjusting bolts. The sealing plates are all connected to the right end of the workbench and the placement platform by screws. The right end of each of the two longitudinally adjacent crossbars contacts the left end of a sealing plate. Adjusting bolts are threaded into the threaded holes on the lower side of the right end of the two sealing plates. The left ends of the two adjusting bolts contact the right end of the transversely adjacent connecting plates, which can adjust the position of the connecting plates.

[0008] Furthermore, the mounting mechanism also includes springs, which are respectively disposed between the right end of the connecting plate and the left end of the sealing plate. The springs are all sleeved on the outside of the right side of the crossbar, and the tension generated by the spring contraction can drive the connecting plate to move and reset.

[0009] Furthermore, the fixing assembly includes a sliding column one, a fixing plate one, a mounting rod one, a sliding column two, a fixing plate two, and a mounting rod two. The sliding column one is slidably connected to the clearance sliding holes one opened on the left and right sides of the lower end of the placement platform. The two upper horizontal bars are located between the outer arc surfaces of the two sliding columns one. The lower ends of the two longitudinally adjacent sliding columns one are fixedly connected to the upper end of a fixing plate one. A mounting rod one is provided between the outer arc surfaces of the two laterally adjacent sliding columns one. The sliding column two is slidably connected to the clearance sliding holes two opened on the left and right sides of the upper end of the worktable. The two lower horizontal bars are located between the outer arc surfaces of the two sliding columns two. The upper ends of the two longitudinally adjacent sliding columns two are fixedly connected to the lower end of a fixing plate two. A mounting rod two is provided between the outer arc surfaces of the two laterally adjacent sliding columns two. Adjusting rods are provided between the outer arc surfaces of the two mounting rods one and between the outer arc surfaces of the two mounting rods two, which can fix the coating test piece one and the coating test piece two.

[0010] Furthermore, a fixed frame is slidably connected to the front side of the upper end of the placement platform. The lower end of the fixed frame is fixedly connected to the outer arc surface of the front mounting rod. A laser rangefinder is installed on the front side of the top wall of the fixed frame. The laser rangefinder corresponds to the upper and lower positions of the front fixed plate. The laser rangefinder is bidirectionally electrically connected to the controller and can detect the position of the fixed plate.

[0011] Furthermore, an electric push rod is provided in the middle of the top wall of the box. The lower end of the telescopic end of the electric push rod is fixedly connected to the upper end of the placement platform. A laser rangefinder is provided on the right side of the top wall of the box. The laser rangefinder corresponds to the vertical position of the placement platform. The input end of the electric push rod is electrically connected to the output end of the controller. The laser rangefinder is bidirectionally electrically connected to the controller, which can adjust the height of the placement platform.

[0012] Furthermore, two fixing rods are respectively provided on the lower side of the box body. The two fixing rods are slidably connected to the connecting sliding holes opened on the lower side of the left end of the worktable. An electric push rod II is provided on the lower side of the left wall of the box body. The right end of the telescopic end of the electric push rod II is fixedly connected to the lower side of the left end of the worktable. A laser rangefinder III is provided on the lower side of the right wall of the box body. The laser rangefinder III corresponds to the left and right positions of the worktable. The input end of the electric push rod II is electrically connected to the output end of the controller. The laser rangefinder III is bidirectionally electrically connected to the controller, which can drive the worktable to move.

[0013] Furthermore, a hot air inlet duct is installed inside the hot air inlet on the upper left side of the box, and a hot air inlet valve is connected in series on the left side of the hot air inlet duct. A cold air inlet duct is installed inside the cold air inlet in the middle of the left side of the box, and a cold air inlet valve is connected in series on the left side of the cold air inlet duct. An exhaust pipe is installed inside the exhaust outlet in the middle of the right side of the box, and an exhaust valve is connected in series on the right side of the exhaust pipe. Temperature detectors are installed on the upper sides of both the left and right ends of the box. The probes of the two temperature detectors, located near the center of the box, are both inside the box. The temperature detectors are bidirectionally electrically connected to the controller, enabling the adjustment of the temperature inside the box.

[0014] Furthermore, a connecting pipe is installed in the connecting groove on the lower left side of the box, and a connecting valve is connected in series on the left side of the connecting pipe. Humidity detectors are installed on the lower left and right sides of the box. The probes of the two humidity detectors, located near the center of the box, are both inside the box. The humidity detectors are bidirectionally electrically connected to the controller, enabling them to adjust the humidity inside the box.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This molybdenum-bismuth synergistic lubrication experimental friction pair test fixture, which is compatible with Ti-ON coating, has the following advantages:

[0016] By adjusting the plate and the rod, the first and second fixed plates can be moved to fix the first and second coating samples, replacing the traditional method of fixing the coating samples by vacuum adsorption. This method generates less pressure and impact on the coating samples, ensuring the integrity of the coating samples while improving the accuracy of the experiment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the front sectional structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the top structure of the box body of this utility model;

[0020] Figure 4 This is a schematic diagram of the installation mechanism of this utility model;

[0021] Figure 5 This is a schematic diagram of the bottom structure of the box body of this utility model;

[0022] Figure 6 This is a schematic diagram of the internal structure of the workbench of this utility model;

[0023] Figure 7 This is a schematic diagram of the structure of the adjustment plate of this utility model.

[0024] In the figures: 1 Box body, 2 Controller, 3 Protective door, 4 Workbench, 5 Placing table, 6 Mounting mechanism, 61 Cross bar, 62 Connecting plate, 63 Adjusting plate, 64 Sealing plate, 65 Spring, 66 Adjusting rod, 67 Fixing assembly, 671 First sliding column, 672 First fixing plate, 673 First mounting rod, 674 Second sliding column, 675 Second fixing plate, 676 Second mounting rod, 68 Adjusting bolt, 7 First electric push rod, 8 First laser range finder, 9 Fixing frame, 10 Second laser range finder, 11 Fixing rod, 12 Second electric push rod, 13 Third laser range finder, 14 Hot air inlet duct, 15 Cold air inlet duct, 16 Connecting pipe, 17 Discharge pipe, 18 Temperature detector, 19 Humidity detector. Detailed Description of the Embodiments

[0025] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0026] See Figure 1-7 , this embodiment provides a technical solution: A molybdenum-bismuth synergistic lubrication test friction pair testing tool matched with Ti-O-N coating, comprising a box body 1, the front end of the box body 1 is hinged with a protective door 3 (the locking manner when the protective door 3 is closed adopts the common conventional technology of connecting a door lock with the box body in the prior art), the upper and lower sides inside the box body 1 are respectively provided with a placing table 5 and a workbench 4, and the testing tool further comprises a mounting mechanism 6; the mounting mechanism 6 comprises cross bars 61, connecting plates 62, adjusting plates 63, adjusting rods 66 and fixing assemblies 67, the cross bars 61 are respectively arranged on the lower sides inside the workbench 4 and the placing table 5, two longitudinally adjacent cross bars 61 are respectively slidably connected with sliding holes correspondingly formed at the left end of one connecting plate 62, the left ends of the two connecting plates 62 are both provided with the adjusting plates 63, the middle parts of the front ends of the adjusting plates 63 are both provided with adjusting grooves, the insides of the workbench 4 and the placing table 5 are both provided with the adjusting rods 66, the two adjusting rods 66 are respectively located inside the vertically adjacent adjusting grooves, the fixing assemblies 67 are respectively arranged inside the workbench 4 and the placing table 5, the mounting mechanism 6 further comprises sealing plates 64 and adjusting bolts 68, the sealing plates 64 are all connected to the right ends of the workbench 4 and the placing table 5 by screws, the right ends of the two longitudinally adjacent cross bars 61 are all in contact with the left end of one sealing plate 64, the threaded holes formed on the lower sides of the right ends of the two sealing plates 64 are all in threaded connection with the adjusting bolts 68, the left ends of the two adjusting bolts 68 are respectively in contact with the right ends of the transversely adjacent connecting plates 62, the mounting mechanism 6 further comprises springs 65, the springs 65 are respectively arranged between the right ends of the connecting plates 62 and the left ends of the sealing plates 64, and the springs 65 are all sleeved on the outer portions of the right sides of the cross bars 61.

[0027] The fixing assembly 67 includes a sliding column 671, a fixing plate 672, a mounting rod 673, a second sliding column 674, a second fixing plate 675, and a second mounting rod 676. The sliding column 671 is slidably connected to the clearance sliding holes 1 opened on the left and right sides of the lower end of the placement platform 5. The two horizontal bars 61 on the upper side are located between the outer arc surfaces of the two sliding columns 671. The lower ends of two longitudinally adjacent sliding columns 671 are fixedly connected to the upper end of a fixing plate 672. A mounting rod 673 is provided between the outer arc surfaces of two laterally adjacent sliding columns 671. Sliding column 674 is slidably connected to the clearance sliding holes 2 opened on the left and right sides of the upper end of the worktable 4. The two horizontal bars 61 on the lower side are located between the outer arc surfaces of the two sliding columns 674. The upper ends of the two longitudinally adjacent sliding columns 674 are fixedly connected to the lower end of a fixing plate 675. A mounting rod 676 is provided between the outer arc surfaces of the two transversely adjacent sliding columns 674. Adjusting rods 66 are provided between the outer arc surfaces of the two mounting rods 673 and between the outer arc surfaces of the two mounting rods 676. The operator can rotate the two adjusting bolts simultaneously. 68. During rotation, adjusting bolt 68 moves to the left, causing connecting plate 62 to move to the left. Connecting plate 62 then moves adjusting plate 63 to the left, causing spring 65 to contract. At this time, adjusting rod 66 slides within the adjusting groove and rotates relative to it. This causes adjusting plate 63 to move mounting rod 673 and mounting rod 676 via adjusting rod 66. Mounting rod 673 and mounting rod 676 then move fixing plate 672 and fixing plate 674 via sliding pins 671 and 674. The fixed plate 675 moves, and when the distance between the laser rangefinder 10 and the upper end of the fixed plate 675 on the front side is equal to c, it means that the fixed plate 672 and the fixed plate 675 are in contact with the coating sample 1 and the coating sample 2 respectively, thereby fixing the coating sample 1 and the coating sample 2. This fixes the coating sample 1 and the coating sample 2, replacing the traditional method of fixing the coating sample by vacuum adsorption. It will not damage the coating sample, ensuring the integrity of the coating sample and improving the accuracy of the experiment.

[0028] Among them, the right end of the housing 1 is equipped with a controller 2. The input end of the controller 2 is electrically connected to an external power supply and can regulate the electrical components inside the equipment.

[0029] The platform 5 has a fixed frame 9 slidably connected to the front side of the upper end. The lower end of the fixed frame 9 is fixedly connected to the outer arc surface of the mounting rod 673 on the front side. A laser rangefinder 10 is installed on the front side of the top wall of the fixed frame 9. The laser rangefinder 10 corresponds to the upper and lower positions of the fixed plate 675 on the front side. The laser rangefinder 10 is bidirectionally electrically connected to the controller 2. During use, the built-in light source of the laser rangefinder 10 emits a laser beam to the upper end of the fixed plate 675 on the front side. When the laser comes into contact with the upper end of the fixed plate 675 on the front side, it is reflected. Then the laser rangefinder 10 receives the reflected light. The laser rangefinder 10 calculates the distance between the laser rangefinder 10 and the upper end of the fixed plate 675 on the front side by measuring the time to return (TOF) or phase difference of the laser.

[0030] The top wall of the housing 1 is equipped with an electric push rod 7 in the middle. The lower end of the telescopic end of the electric push rod 7 is fixedly connected to the upper end of the placement platform 5. A laser rangefinder 8 is installed on the right side of the top wall of the housing 1. The laser rangefinder 8 corresponds to the upper and lower positions of the placement platform 5. The input end of the electric push rod 7 is electrically connected to the output end of the controller 2. The laser rangefinder 8 is bidirectionally electrically connected to the controller 2. The laser rangefinder 8 first measures the distance between its lower end and the upper end of the placement platform 5. Through the control of the controller 2, the electric push rod 7 starts to run. The telescopic end of the electric push rod 7 extends, so that the electric push rod 7 drives the coating sample 2 to move downward through the placement platform 5. When the distance between the lower end of the laser rangefinder 8 and the upper end of the placement platform 5 is equal to h, it means that the molybdenum-bismuth synergistic lubricating material at the upper end of the coating sample 1 will contact the Ti-ON coating at the lower end of the coating sample 2.

[0031] Specifically: Two fixing rods 11 are installed on the lower side of the interior of housing 1, and are slidably connected to connecting sliding holes on the lower left side of workbench 4. An electric push rod 12 is installed on the lower left wall of housing 1, with its right end fixedly connected to the lower left side of workbench 4. A laser rangefinder 13 is installed on the lower right wall of housing 1, corresponding to the left and right positions of workbench 4. The input end of the electric push rod 12 is electrically connected to the output end of controller 2, and the laser rangefinder 13 is bidirectionally electrically connected to controller 2. The laser rangefinder 13 measures the distance between its left end and the right end of workbench 4, and the distance is recorded by controller 2. The electric push rod 12 is activated, extending its telescopic end. This causes the electric push rod 12 to move the coating sample 1 to the right via the worktable 4. When the distance between the left end of the laser rangefinder 13 and the right end of the worktable 4 is equal to l, it means that the right end of the worktable 4 is in contact with the left end of the right-side fixed plate 672. Subsequently, the electric push rod 12 is retracted via the controller 2, causing the electric push rod 12 to move the coating sample 1 to the left via the worktable 4. When the distance between the left end of the laser rangefinder 13 and the right end of the worktable 4 is equal to m, it means that the right end of the worktable 4 is in contact with the left end of the right-side fixed plate 672.

[0032] The enclosure consists of: a hot air inlet duct 14 located inside the hot air inlet on the upper left side of the enclosure 1, with a hot air inlet valve connected in series on the left side of the hot air inlet duct 14; a cold air inlet duct 15 located inside the cold air inlet in the middle of the left side of the enclosure 1, with a cold air inlet valve connected in series on the left side of the cold air inlet duct 15; and an exhaust pipe 17 located inside the exhaust outlet in the middle of the right side of the enclosure 1, with an exhaust valve connected in series on the right side of the exhaust pipe 17. Temperature sensors 18 are installed on the upper sides of both ends of the enclosure 1. The probes of both temperature sensors 18, located near the center of the enclosure 1, are positioned inside the enclosure 1. Both temperature sensors 18 are bidirectionally electrically connected to the controller 2. When it is necessary to increase the temperature inside the enclosure 1, the hot air inlet valve is opened, and an external hot air blower injects hot air into the enclosure 1 through the hot air inlet duct 14, thereby increasing the temperature inside the enclosure 1. The temperature inside the chamber 1 is lowered by the air inside the chamber 1, while the air inside the chamber 1 is discharged through the exhaust pipe 17. When it is necessary to lower the temperature inside the chamber 1, the cold air inlet valve is opened, and the external air cooler injects cold air into the chamber 1 through the cold air inlet pipe 15, thereby lowering the temperature inside the chamber 1. The air inside the chamber 1 is discharged through the exhaust pipe 17. During the operation of the hot air inlet pipe 14 or the cold air inlet pipe 15, the two sets of temperature detectors 18 collect the temperature signal inside the chamber 1 through the thermal resistance sensor. The thermal resistance sensor converts the temperature change into the resistance value change. Then, the temperature detector 18 converts the resistance value into the temperature value through the built-in algorithm. After that, the data calculated by the temperature detector 18 is transmitted to the controller 2. Then, the controller 2 takes an intermediate value based on the data provided by the two sets of temperature detectors 18. This intermediate value is the temperature inside the chamber 1.

[0033] The enclosure 1 has a connecting slot on the lower left side, with a connecting pipe 16 and a connecting valve connected in series on the left side. Humidity detectors 19 are installed on the lower left and right sides of the enclosure 1. The probes of the two humidity detectors 19, located near the center of the enclosure 1, are inside the enclosure. Both humidity detectors 19 are bidirectionally electrically connected to the controller 2. When the humidity inside the enclosure 1 needs to be increased, the connecting valve is opened, and an external humidifier injects water vapor into the enclosure 1 through the connecting pipe 6, thus increasing the humidity inside the enclosure 1. The air inside the enclosure 1 is then discharged through the exhaust pipe 17. At this time, the conductive material of the two humidity detectors 19 absorbs the water vapor, causing a decrease in resistance. The humidity detectors 19 then determine the humidity by measuring the change in resistance. The humidity detectors 19 then transmit the detected information to the controller 2 through their built-in data transmission module. The controller 2 receives the detected data through its built-in serial communication port and then takes an intermediate value based on the data provided by the two humidity detectors 19. This intermediate value is the humidity inside the enclosure 1.

[0034] The working principle of the molybdenum-bismuth synergistic lubrication experimental friction pair testing fixture provided by this utility model, which is matched with Ti-ON coating, is as follows: Before operation, the distance between the upper end of the workbench 4 and the lower end of the placement platform 5, the thickness of the first coating sample, the distance between the two fixing plates 672, the width of the workbench, and the distance between the right end of the workbench and the left end of the right fixing plate 672 are measured (e.g., d, e, f, i, and j). Then, the protective door 3 is opened. Subsequently, the first coating sample containing the molybdenum-bismuth synergistic lubricating material is placed in the middle of the upper end of the workbench 4. Then, the second coating sample containing the Ti-ON coating is placed in the middle of the lower end of the placement platform 5. The thicknesses of the first and second coating samples are equal, so the distance between the upper end of the fixing plate 672 and the lower end of the second coating sample is equal to that between the two fixing plates. The distance between the lower end of 675 and the upper end of the coating sample 1 (this distance is set as a), then the distance between the lower end of the laser rangefinder 2 10 and the upper end of the front fixed plate 2 675 is measured. During the use of the laser rangefinder 2 10, the built-in light source of the laser rangefinder 2 10 will emit a laser beam to the upper end of the front fixed plate 2 675. When the laser comes into contact with the upper end of the front fixed plate 2 675, it will be reflected. Then the laser rangefinder 2 10 will receive the reflected light. The laser rangefinder 2 10 calculates the distance between the laser rangefinder 2 10 and the upper end of the front fixed plate 2 675 by measuring the round-trip time (TOF) or phase difference of the laser (e.g., set as b). Then the laser rangefinder 2 10 transmits the detected information to the controller 2 through the built-in data transmission module.

[0035] The controller 2 receives the detected data through its built-in serial communication port. The distance between the laser rangefinder 2 10 and the upper end of the front fixed plate 2 675, plus the distance between the upper end of the fixed plate 1 672 and the lower end of the coating sample 2, equals the distance between the lower end of the fixed plate 2 675 and the upper end of the coating sample 1. Therefore, the distance between the laser rangefinder 2 10 and the upper end of the front fixed plate 2 675 when the fixed plate 1 672 and the fixed plate 2 675 are in contact with the coating sample 2 and the coating sample 1 respectively (e.g., c, c = b + a × 2) can be calculated. Then, one operator holds the Ti-ON coating sample while the other operator simultaneously rotates the two adjusting bolts 68. During rotation, the adjusting bolts 68 move to the left, causing the connecting plate 62 to move to the left. The connecting plate 62 then causes the adjusting plate 63 to move to the left, and the spring 65 contracts. At this time, the adjusting rod 66 will... The interior of the adjustment groove slides and rotates relative to the adjustment groove, thereby causing the adjustment plate 63 to move the mounting rod 673 and the mounting rod 676 via the adjustment rod 66. The mounting rod 673 and the mounting rod 676 will move the fixing plate 672 and the fixing plate 675 via the sliding column 671 and the sliding column 674. At the same time, the front mounting rod 673 will move the laser rangefinder 10 via the fixing frame 9. When the distance between the laser rangefinder 10 and the upper end of the front fixing plate 675 is equal to c, it means that the fixing plate 672 and the fixing plate 675 are in contact with the coating test piece 2 and the coating test piece 1 respectively, thereby fixing the coating test piece 1 and the coating test piece 2. Then, the protective door 3 is closed (the locking method of the protective door 3 when closed is the commonly used technology of connecting the door lock to the box 1 in the prior art). Then, the temperature and humidity inside the box 1 are adjusted to simulate the environmental conditions under actual working conditions.

[0036] At this point, first connect the hot air inlet pipe 14 to the external hot air blower, the cold air inlet pipe 15 to the external cold air blower, the connecting pipe 16 to the external humidifier, and the exhaust pipe 17 to the external delivery pipeline. (The flanges of the hot air inlet pipe 14, cold air inlet pipe 15, connecting pipe 16, and exhaust pipe 17 are connected to the flange of the external equipment via screws.) Next, open the exhaust valve. When it is necessary to increase the temperature inside the housing 1, open the hot air inlet valve, and the external hot air blower will deliver hot air through the hot air inlet pipe. 14 is injected into the interior of chamber 1, thereby increasing the internal temperature of chamber 1, while the air inside chamber 1 is discharged through exhaust pipe 17; when it is necessary to lower the internal temperature of chamber 1, the cold air inlet valve is opened, and the external air cooler injects cold air into the interior of chamber 1 through cold air inlet pipe 15, thereby lowering the internal temperature of chamber 1, while the air inside chamber 1 is discharged through exhaust pipe 17. During the operation of hot air inlet pipe 14 or cold air inlet pipe 15, two sets of temperature detectors 18 collect the internal temperature of chamber 1 through thermistor sensors. The temperature signal is generated by a resistance temperature sensor (RTS) which converts temperature changes into resistance changes. Temperature detector 18 then converts the resistance value back into a temperature value using a built-in algorithm. The calculated data from temperature detector 18 is transmitted to controller 2. Controller 2 then takes an intermediate value based on the data from the two temperature detectors 18; this intermediate value is the temperature inside the chamber 1. When it's necessary to increase the humidity inside the chamber 1, the connection valve is opened, and an external humidifier injects water vapor into the chamber 1 through connection pipe 6, thus increasing the humidity inside the chamber 1. The air inside the chamber 1 is then discharged through exhaust pipe 17. At this time, the conductive materials of the two humidity detectors 19 absorb the water vapor, causing a decrease in resistance. Humidity detector 19 then determines the humidity by measuring the change in resistance. The humidity detector 19 then transmits the detected information to controller 2 through its built-in data transmission module. Controller 2 receives the detected data through its built-in serial communication port and takes an intermediate value based on the data from the two humidity detectors 19; this intermediate value is the humidity inside the chamber 1.

[0037] When the temperature and humidity inside chamber 1 reach the set values, laser rangefinder 8 measures the distance between its lower end and the upper end of the placement platform 5 (e.g., denoted as g). The working principle of laser rangefinder 8 is the same as that of laser rangefinder 10. Laser rangefinder 8 transmits the detected information to controller 2 through its built-in data transmission module. Controller 2 receives the detected data through its built-in serial communication port. Then, it subtracts the thickness of coating sample 1 and coating sample 2 from the distance between the upper end of the worktable 4 and the lower end of the placement platform 5, and then adds the distance between the lower end of laser rangefinder 8 and the upper end of the placement platform 5. This gives the result of the molybdenum-bismuth synergistic lubricant on the upper end of coating sample 1. When the material comes into contact with the Ti-ON coating at the lower end of the second coated sample, the distance between the lower end of the laser rangefinder 8 and the upper end of the placement stage 5 (e.g., h, h = de × 2 + g) is measured. Then, through the control of the controller 2, the electric push rod 7 starts to operate, extending its telescopic end, thereby causing the electric push rod 7 to move the second coated sample downwards via the placement stage 5. When the distance between the lower end of the laser rangefinder 8 and the upper end of the placement stage 5 equals h, this indicates that the molybdenum-bismuth synergistic lubricant at the upper end of the first coated sample will come into contact with the Ti-ON coating at the lower end of the second coated sample. Then, the laser rangefinder 3 measures the distance between its left end and the right end of the worktable 4 (e.g., k). The working principle of laser rangefinder 313 is the same as that of laser rangefinder 210. Laser rangefinder 313 transmits the detected information to controller 2 through its built-in data transmission module. Controller 2 receives the detected data through its built-in serial communication port. By subtracting the distance between the right end of worktable 4 and the left end of the right fixed plate 672 from the distance between the left end of laser rangefinder 313 and the right end of worktable 4, we can obtain the distance between the left end of laser rangefinder 313 and the right end of worktable 4 when the right end of worktable 4 contacts the left end of right fixed plate 672 (e.g., let's say l, l = j + k). Then, through the control of controller 2, electric push rod 21... 2. Upon startup, the telescopic end of electric actuator 12 extends, causing it to move the coating sample 1 to the right via the worktable 4. When the distance between the left end of laser rangefinder 13 and the right end of worktable 4 is equal to l, this indicates that the right end of worktable 4 is in contact with the left end of the right-side fixed plate 672. Subtracting the width of worktable 4 from the distance between the two fixed plates 672, and adding this distance to the distance between the left end of laser rangefinder 13 and the right end of worktable 4, we can determine the distance between the left end of laser rangefinder 13 and the right end of worktable 4 when the left end of worktable 4 is in contact with the right end of the left-side fixed plate 672 (if m, m = f - i + l).Subsequently, through the control of controller 2, the telescopic end of electric push rod 12 shortens, thereby causing electric push rod 12 to drive the coating sample 1 to move to the left via worktable 4. When the distance between the left end of laser rangefinder 3 13 and the right end of worktable 4 is equal to m, this means that the right end of worktable 4 is in contact with the left end of the right-side fixed plate 672. Through the extension and shortening of the telescopic end of electric push rod 12 (since worktable 4 is slidably connected to fixed rod 11, fixed rod 11 provides a guide support, which reduces the radial force applied by worktable 4 to electric push rod 12 and prevents the telescopic end of electric push rod 12 from bending and deforming. The radial force of electric push rod 12 is slidably borne by fixed rod 11, and electric push rod 12 is only subjected to left and right axial forces), the coating sample is moved. During the transverse reciprocating motion of the first coated specimen, the molybdenum-bismuth synergistic lubricant at the upper end of the first coated specimen will generate relative motion with the Ti-ON coating at the lower end of the second coated specimen (Ti-ON coating is a high-performance ceramic coating with good wear resistance, corrosion resistance, and low coefficient of friction; molybdenum-bismuth synergistic lubricant is a composite lubricant material, typically with good lubrication performance and friction reduction effect). This simulates reciprocating friction under actual working conditions. The required friction time is then determined according to the experimental purpose. If the purpose is to preliminarily evaluate the material's performance, the test time can be shorter, typically 1-2 hours; if the purpose is to study the long-term performance of the material in detail, the test time can be longer, typically 8-24 hours or longer.

[0038] The operator uses an external timing device (mobile phone or timer) to time the friction. Once the specified friction time is reached, the electric push rod 12 is stopped by the controller 2. Then, the operator rotates the two adjusting bolts 68. During rotation, the adjusting bolts 68 move to the right. At this time, the tension generated by the contraction of the spring 65 will drive the connecting plate 62 to move to the right. The connecting plate 62 will drive the adjusting plate 63 to move to the right. At this time, the adjusting rod 66 will slide inside the adjusting groove and rotate relative to the adjusting groove. This will cause the adjusting plate 63 to drive the mounting rod 673 and the mounting rod 676 to move through the adjusting rod 66. The mounting rod 673 and the mounting rod 676 will drive the fixing plate 672 and the fixing plate 675 through the sliding column 671 and the sliding column 674. The movement is performed until the fixing plates 672 and 675 are separated from the coating test pieces 1 and 2. Then, the coating test pieces 1 and 2 are removed, and the wear of the molybdenum-bismuth synergistic lubricant and the Ti-ON coating during friction is observed using an external optical microscope. This includes the wear depth, wear width, and surface morphology changes. By observing the wear of the Ti-ON coating, its wear resistance and friction reduction effect can be evaluated. Similarly, by observing the wear of the molybdenum-bismuth synergistic lubricant, its lubrication performance and friction reduction effect can be evaluated. The operator can periodically remove the screws and open the sealing plate 64 to separate it from the crossbar 61. The spring 65 is then replaced to prevent reduced elasticity from affecting the working performance.

[0039] It is worth noting that the controller 2 disclosed in the above embodiments can be an AT89C51, the electric actuator 7 and the electric actuator 12 can be dytp2000-550 / 50-x, the laser rangefinder 8, the laser rangefinder 10 and the laser rangefinder 13 can be HMLDM-UD100A, the temperature detector 18 can be OHR-E700, and the humidity detector 19 can be YF-WSD300B. The controller 2 controls the operation of the electric actuator 7, the laser rangefinder 8, the laser rangefinder 10, the electric actuator 12, the laser rangefinder 13, the temperature detector 18, and the humidity detector 19 using methods commonly used in the prior art.

[0040] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A test fixture for a molybdenum-bismuth synergistic lubrication experimental friction pair, compatible with a Ti-ON coating, comprising a housing (1), a protective door (3) hinged to the front end of the housing (1), and a placement platform (5) and a worktable (4) respectively provided on the upper and lower sides inside the housing (1), characterized in that: It also includes the installation mechanism (6); The installation mechanism (6) includes a crossbar (61), a connecting plate (62), an adjusting plate (63), an adjusting rod (66), and a fixing component (67). The crossbar (61) is respectively located on the lower side inside the workbench (4) and the placement platform (5). Two longitudinally adjacent crossbars (61) are slidably connected to the sliding holes corresponding to the left end of a connecting plate (62). The left end of both connecting plates (62) is provided with an adjusting plate (63). The middle part of the front end of the adjusting plate (63) is provided with an adjusting groove. The workbench (4) and the placement platform (5) are both provided with adjusting rods (66). The two adjusting rods (66) are respectively located inside the vertically adjacent adjusting grooves. The fixing component (67) is respectively located inside the workbench (4) and the placement platform (5).

2. The molybdenum-bismuth synergistic lubrication experimental friction pair test fixture for Ti-ON coating as described in claim 1, characterized in that: A controller (2) is provided at the right end of the housing (1), and the input end of the controller (2) is electrically connected to an external power source.

3. The molybdenum-bismuth synergistic lubrication experimental friction pair test fixture for Ti-ON coating as described in claim 1, characterized in that: The installation mechanism (6) also includes a sealing plate (64) and an adjusting bolt (68). The sealing plate (64) is connected to the right end of the workbench (4) and the placement platform (5) by screws. The right end of the two longitudinally adjacent crossbars (61) is in contact with the left end of one sealing plate (64). The threaded holes on the lower side of the right end of the two sealing plates (64) are threaded with adjusting bolts (68). The left end of the two adjusting bolts (68) is in contact with the right end of the transversely adjacent connecting plate (62).

4. The molybdenum-bismuth synergistic lubrication experimental friction pair test fixture for Ti-ON coating as described in claim 3, characterized in that: The mounting mechanism (6) also includes springs (65), which are respectively disposed between the right end of the connecting plate (62) and the left end of the sealing plate (64), and are all sleeved on the outside of the right side of the crossbar (61).

5. The molybdenum-bismuth synergistic lubrication experimental friction pair test fixture for Ti-ON coating as described in claim 2, characterized in that: The fixing assembly (67) includes a sliding column one (671), a fixing plate one (672), a mounting rod one (673), a sliding column two (674), a fixing plate two (675), and a mounting rod two (676). The sliding column one (671) is slidably connected to the clearance sliding holes one opened on the left and right sides of the lower end of the placement platform (5). The two horizontal bars (61) on the upper side are located between the outer arc surfaces of the two sliding columns one (671). The lower ends of two longitudinally adjacent sliding columns one (671) are fixedly connected to the upper end of a fixing plate one (672). The outer arc surfaces of two laterally adjacent sliding columns one (671) are provided with There is a mounting rod 1 (673), and sliding rod 2 (674) is slidably connected to the clearance sliding holes 2 opened on the left and right sides of the upper end of the worktable (4). The two horizontal bars (61) on the lower side are located between the outer arc surfaces of the two sliding rods 2 (674). The upper ends of the two longitudinally adjacent sliding rods 2 (674) are fixedly connected to the lower end of a fixing plate 2 (675). A mounting rod 2 (676) is provided between the outer arc surfaces of the two transversely adjacent sliding rods 2 (674). An adjusting rod (66) is provided between the outer arc surfaces of the two mounting rods 1 (673) and between the outer arc surfaces of the two mounting rods 2 (676).

6. The molybdenum-bismuth synergistic lubrication experimental friction pair test fixture for Ti-ON coating as described in claim 5, characterized in that: A fixed frame (9) is slidably connected to the front side of the upper end of the placement platform (5). The lower end of the fixed frame (9) is fixedly connected to the outer arc surface of the front mounting rod (673). A laser rangefinder (10) is provided on the front side of the top wall of the fixed frame (9). The laser rangefinder (10) corresponds to the upper and lower positions of the front fixed plate (675). The laser rangefinder (10) is bidirectionally electrically connected to the controller (2).

7. The molybdenum-bismuth synergistic lubrication experimental friction pair test fixture for Ti-ON coating as described in claim 2, characterized in that: An electric push rod (7) is provided in the middle of the top wall of the box (1). The lower end of the telescopic end of the electric push rod (7) is fixedly connected to the upper end of the placement platform (5). A laser rangefinder (8) is provided on the right side of the top wall of the box (1). The laser rangefinder (8) corresponds to the upper and lower positions of the placement platform (5). The input end of the electric push rod (7) is electrically connected to the output end of the controller (2). The laser rangefinder (8) is bidirectionally electrically connected to the controller (2).

8. The molybdenum-bismuth synergistic lubrication experimental friction pair test fixture for Ti-ON coating as described in claim 2, characterized in that: The lower side of the box (1) is provided with two fixed rods (11). The two fixed rods (11) are slidably connected to the connecting sliding holes opened on the lower side of the left end of the workbench (4). The lower side of the left wall of the box (1) is provided with an electric push rod two (12). The right end of the extension end of the electric push rod two (12) is fixedly connected to the lower side of the left end of the workbench (4). The lower side of the right wall of the box (1) is provided with a laser rangefinder three (13). The laser rangefinder three (13) corresponds to the left and right positions of the workbench (4). The input end of the electric push rod two (12) is electrically connected to the output end of the controller (2). The laser rangefinder three (13) is bidirectionally electrically connected to the controller (2).

9. The molybdenum-bismuth synergistic lubrication experimental friction pair test fixture for Ti-ON coating as described in claim 2, characterized in that: A hot air inlet pipe (14) is installed in the hot air inlet on the upper side of the left end of the box (1). A hot air inlet valve is connected in series on the left side of the hot air inlet pipe (14). A cold air inlet pipe (15) is installed in the cold air inlet in the middle of the left end of the box (1). A cold air inlet valve is connected in series on the left side of the cold air inlet pipe (15). A discharge pipe (17) is installed in the discharge port in the middle of the right end of the box (1). A discharge valve is connected in series on the right side of the discharge pipe (17). Temperature detectors (18) are installed on the upper side of both the left and right ends of the box (1). The probes of the two sets of temperature detectors (18) are located inside the box (1) at the end closest to the center of the box (1). The temperature detectors (18) are bidirectionally electrically connected to the controller (2).

10. The molybdenum-bismuth synergistic lubrication experimental friction pair test fixture for Ti-ON coating as described in claim 2, characterized in that: A connecting pipe (16) is installed in the connecting groove on the lower left side of the box (1). A connecting valve is connected in series on the left side of the connecting pipe (16). A humidity detector (19) is installed on the lower left and right sides of the box (1). The probes of the two humidity detectors (19) are located inside the box (1) at the end closest to the center of the box (1). The humidity detectors (19) are bidirectionally electrically connected to the controller (2).

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