Surface leveling device for large-size wet-type friction plate base material

Abstract

The invention relates to the technical field of wet-type friction plates, and discloses a large-size wet-type friction plate base material surface flattening device which comprises a supporting mechanism and further comprises a detection mechanism, a grinding mechanism and a moving mechanism. The side face of the supporting mechanism is connected with the side face of the detection mechanism; the inner side of the supporting mechanism is fixedly connected with the bottom end of the moving mechanism, the detection mechanism comprises a placement rod, a high limiting lamp and a low limiting lamp, the side face of the placement rod is fixedly connected with the side face of the high limiting lamp, and the flatness of the friction plate is displayed through the compression amount of a suction cup under the action of the suction cup and an air cylinder. The situation that the brake performance is affected due to local excessive abrasion of the friction plate in the using process is avoided; the thickness uniformity of the friction plate is more accurately guaranteed through the combination of the limiting lamps, and when the thickness of a base material of the friction plate exceeds a standard range, timely thickness detection can help to avoid material waste.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wet friction plate, more particularly to a surface flattening device for large-size wet friction plate substrate. BACKGROUND

[0002] The friction plate is a component composed of a core plate and a friction lining or a friction material layer, mainly applied in the fields of mechanical engineering, mechanical parts and clutches, as one of the core components of the clutch three-piece set (pressure plate, friction plate, separation bearing), the friction plate realizes power transmission or cut-off through combination or separation, and under the condition of the friction plate substrate, the thickness and the flatness of the surface thereof need to be ensured, as follows:

[0003] I. When the surface of the friction plate substrate is uneven, the contact between the friction plate and the contact surface will be uneven, thereby causing the fluctuation of the friction force and affecting the stability of the friction performance, which may cause the brake effect to be poor, especially at high speed or under high load; the uneven surface will accelerate the local wear of the friction plate, and uneven friction may cause some areas to be under excessive stress, resulting in local excessive wear and reducing the service life of the friction plate;

[0004] II. Moreover, the selection of the thickness of the friction plate is also relatively strict, when the friction plate is too thin, the friction force thereof will be reduced, resulting in weakened brake effect, the friction plate cannot provide sufficient friction force, and the braking distance may be increased; the friction plate that is too thick may provide excessive friction force, which may cause the vehicle to stop abruptly during braking, affecting the driving experience and stability.

[0005] Therefore, the present application needs to provide a surface flattening device for large-size wet friction plate substrate. SUMMARY

[0006] In order to overcome the above-mentioned defects of the prior art, the present application provides a surface flattening device for large-size wet friction plate substrate to solve the problems existing in the above background art.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical solution: a surface flattening device for large-size wet friction plate substrate, comprising a supporting mechanism, further comprising a detection mechanism, a polishing mechanism and a moving mechanism, the side surface of the supporting mechanism is connected with the side surface of the detection mechanism, the inner side of the supporting mechanism is fixedly connected with the bottom end of the moving mechanism, the side surface of the polishing mechanism is fixedly connected with the side surface of the moving mechanism, and the top end of the supporting mechanism is connected with the material to be detected.

[0008] The detection mechanism includes a mounting rod, a high limit light, and a low limit light. The side of the mounting rod is fixedly connected to the side of the high limit light, and the side of the mounting rod is fixedly connected to the side of the low limit light. A first fixing plate is connected to the side of the mounting rod, and the bottom end of the first fixing plate is fixedly connected to the top end of the support mechanism.

[0009] The grinding mechanism includes an abrasive disc and a cylinder. An air guide pipe is fixedly connected to the bottom end of the cylinder, and a buffer disc is fixedly connected to the bottom end of the air guide pipe. An indicator light is fixedly connected to the top end of the buffer disc. A rotating motor is fixedly connected to the bottom end of the abrasive disc, and the top end of the abrasive disc is connected to the side of the material to be tested.

[0010] Furthermore, the support mechanism includes a load-bearing plate and a conveyor belt. A support plate is fixedly connected to the top of the load-bearing plate, a roller is connected to the side of the conveyor belt, a support rod is fixedly connected to the inner side of the roller, the side of the support rod is connected to the side of the load-bearing plate, a support box is fixedly connected to the side of the support rod, and a through groove is opened on the side of the support box. The inner side of the through groove is connected to the side of the detection mechanism.

[0011] Furthermore, a fixing groove is provided at the top of the support plate, and the inner side of the fixing groove is connected to the side of the moving mechanism. A moving groove is provided at the bottom of the fixing groove, and the inner side of the moving groove is connected to the side of the moving mechanism. A drive motor is fixedly connected to the top of the support rod, and the side of the drive motor is fixedly connected to the side of the load-bearing plate.

[0012] Furthermore, the detection mechanism includes a clamping plate and a spiral rod. A connecting rod is fixedly connected to the side of the clamping plate, and a moving plate is fixedly connected to the top of the connecting rod. The bottom end of the moving plate is threadedly connected to the side of the spiral rod. A rotary motor is fixedly connected to the top of the spiral rod, and a protective plate is fixedly connected to the bottom of the spiral rod. The side of the spiral rod is connected to the inner side of the through groove, and the side of the rotary motor is fixedly connected to the top of the load-bearing plate. A rotating ring is threadedly connected to the side of the spiral rod, and a pressure rod is fixedly connected to the side of the rotating ring. A pressure block is fixedly connected to the top of the pressure rod.

[0013] Furthermore, a force-bearing plate is fixedly connected to the side of the mounting rod, the top of the force-bearing plate is connected to the bottom of the pressure block, a rotating tooth is fixedly connected to the side of the mounting rod, an I-shaped shaft is connected to the side of the mounting rod, a second fixing plate is connected to the top of the I-shaped shaft, a fixing tooth is connected to the inner side of the second fixing plate, the top of the fixing tooth meshes with the side of the rotating tooth, and the bottom of the second fixing plate is fixedly connected to the top of the load-bearing plate.

[0014] Furthermore, a platform is fixedly connected to the bottom of the rotating motor, a control rod is fixedly connected to the side of the platform, a reciprocating motor is fixedly connected to the top of the control rod, the side of the reciprocating motor is fixedly connected to the side of the moving mechanism, and a connecting groove is provided at the bottom of the buffer plate.

[0015] Furthermore, an exhaust pipe is fixedly connected to the inner side of the connecting groove, a buffer cavity is opened at the top of the connecting groove, a suction cup is fixedly connected to the bottom end of the exhaust pipe, a pressure sensor is fixedly connected to the top end of the suction cup, and the bottom end of the suction cup is connected to the side of the material to be tested.

[0016] Furthermore, the moving mechanism includes an L-shaped carrying plate, a rotating groove is provided on the side of the L-shaped carrying plate, a control rod is connected to the inner side of the rotating groove, a slider is fixedly connected to the side of the L-shaped carrying plate, the side of the slider is connected to the inner side of the moving groove, a solenoid is threadedly connected to the top of the L-shaped carrying plate, and an adjusting motor is fixedly connected to the top of the solenoid.

[0017] The technical effects and advantages of this invention are as follows:

[0018] 1. This invention incorporates a flatness detection mechanism. Through the action of a suction cup and a cylinder, the flatness of the friction pad is displayed by the compression of the suction cup. This helps to prevent excessive local wear of the friction pad during use, which would affect braking performance. Friction pads with uneven surfaces are prone to generating noise and vibration during braking, affecting driving comfort. After detection, uneven friction pads can be rubbed again, which helps to reduce the unevenness of the friction pad surface and avoid noise and vibration during braking.

[0019] 2. This invention, by incorporating a thickness detection mechanism and a combination of limit lights, more accurately ensures the uniformity of the friction pad thickness. This facilitates timely thickness detection when the thickness of the friction pad substrate exceeds the standard range, helping to avoid material waste. Precise detection reduces rework or scrap caused by substandard processing. The thickness detection mechanism can provide real-time feedback on the status of the friction pad substrate, helping operators quickly identify and resolve problems, reducing production downtime, and thus improving production efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the support mechanism structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the detection mechanism structure of the present invention;

[0023] Figure 4This is a partial structural diagram of the detection mechanism of the present invention;

[0024] Figure 5 This is a schematic diagram of the mounting rod structure of the present invention;

[0025] Figure 6 This is a schematic diagram of the movable structure of the mounting rod of the present invention;

[0026] Figure 7 This is a schematic diagram of the grinding mechanism of the present invention;

[0027] Figure 8 This is a partial structural diagram of the grinding mechanism of the present invention;

[0028] Figure 9 This is a schematic diagram of the moving mechanism structure of the present invention;

[0029] Figure 10 This is a circuit diagram of the indicator light switch of the present invention.

[0030] The attached figures are labeled as follows:

[0031] 1. Supporting institutions;

[0032] 101. Load-bearing plate; 102. Support plate; 103. Conveyor belt; 104. Roller; 105. Support box; 106. Through groove; 107. Support rod; 108. Drive motor; 109. Moving groove; 110. Fixed groove;

[0033] 2. Testing institutions;

[0034] 21. Clamping plate; 211. Connecting rod; 212. Moving plate; 22. Rotating ring; 221. Pressure rod; 222. Pressure block; 23. Mounting rod; 231. High limit light; 232. Low limit light; 234. First fixing plate; 235. Force-bearing plate; 236. Rotating gear; 237. I-shaped shaft; 238. Second fixing plate; 239. Fixing gear; 24. Helical rod; 241. Rotary motor; 242. Protective plate;

[0035] 3. Grinding mechanism;

[0036] 31. Abrasive disc; 311. Rotary motor; 312. Stage; 313. Control lever; 314. Reciprocating motor; 32. Cylinder; 321. Air guide pipe; 322. Buffer disc; 323. Indicator light; 324. Buffer chamber; 325. Suction cup; 326. Exhaust pipe; 327. Pressure sensor; 328. Connecting groove;

[0037] 4. Moving mechanism;

[0038] 401. L-shaped loading platform; 402. Rotating groove; 403. Slider; 404. Adjusting motor; 405. Solenoid;

[0039] 5. Materials to be tested. Detailed Implementation

[0040] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The surface smoothing device for a large-size wet friction pad substrate involved in the present invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Reference Figures 1 to 4 The present invention provides a surface flattening device for a large-size wet friction pad substrate, including a support mechanism 1, a detection mechanism 2, a grinding mechanism 3 and a moving mechanism 4. The side of the support mechanism 1 is connected to the side of the detection mechanism 2, the inner side of the support mechanism 1 is fixedly connected to the bottom end of the moving mechanism 4, the side of the grinding mechanism 3 is fixedly connected to the side of the moving mechanism 4, the top of the support mechanism 1 is connected to the material to be detected 5, and the side of the detection mechanism 2 is connected to the side of the material to be detected 5.

[0042] The detection mechanism 2 includes a mounting rod 23, a high limit light 231 and a low limit light 232. The side of the mounting rod 23 is fixedly connected to the side of the high limit light 231 and the side of the mounting rod 23 is fixedly connected to the side of the low limit light 232. A first fixing plate 234 is connected to the side of the mounting rod 23, and the bottom end of the first fixing plate 234 is fixedly connected to the top end of the support mechanism 1.

[0043] The grinding mechanism 3 includes an abrasive disc 31 and a cylinder 32. An air guide pipe 321 is fixedly connected to the bottom end of the cylinder 32, and a buffer disc 322 is fixedly connected to the bottom end of the air guide pipe 321. An indicator light 323 is fixedly connected to the top end of the buffer disc 322. A rotating motor 311 is fixedly connected to the bottom end of the abrasive disc 31, and the top end of the abrasive disc 31 is connected to the side of the material to be tested 5.

[0044] The support mechanism 1 includes a load-bearing plate 101 and a conveyor belt 103. A support plate 102 is fixedly connected to the top of the load-bearing plate 101. A roller 104 is connected to the side of the conveyor belt 103. A support rod 107 is fixedly connected to the inner side of the roller 104. The side of the support rod 107 is connected to the side of the load-bearing plate 101. A support box 105 is fixedly connected to the side of the support rod 107. A through groove 106 is opened on the side of the support box 105. The inner side of the through groove 106 is connected to the side of the detection mechanism 2.

[0045] The support plate 102 has a fixed groove 110 at its top end, the inner side of which is connected to the side of the moving mechanism 4. The fixed groove 110 has a moving groove 109 at its bottom end, the inner side of which is connected to the side of the moving mechanism 4. The support rod 107 has a drive motor 108 fixedly connected to its top end, and the side of the drive motor 108 is fixedly connected to the side of the load-bearing plate 101.

[0046] The testing mechanism 2 includes a clamping plate 21 and a spiral rod 24. A connecting rod 211 is fixedly connected to the side of the clamping plate 21, and a moving plate 212 is fixedly connected to the top of the connecting rod 211. The bottom of the moving plate 212 is threadedly connected to the side of the spiral rod 24. A rotary motor 241 is fixedly connected to the top of the spiral rod 24, and a protective plate 242 is fixedly connected to the bottom of the spiral rod 24. The side of the spiral rod 24 is connected to the inner side of the through groove 106, and the side of the rotary motor 241 is fixedly connected to the top of the load-bearing plate 101. A rotating ring 22 is threadedly connected to the side of the spiral rod 24, and a pressure rod 221 is fixedly connected to the side of the rotating ring 22. A pressure block 222 is fixedly connected to the top of the pressure rod 221.

[0047] A support box 105 is fixed inside the conveyor belt 103. It is suspended inside the conveyor belt 103 and is supported by a support rod 107 to stabilize the material 5 to be tested above the conveyor belt 103. A screw rod 24 is connected to the inside of the through groove 106 opened inside the support box 105. The two ends of the screw rod 24 are threaded to the movable plates 212. Under its rotation, they move towards each other. Since there is a certain distance between the bottom of the movable plate 212 and the load-bearing plate 101 but not exceeding the rotation radius of the movable plate 212, the bottom of the movable plate 212 can neutralize the rotation effect brought by the screw rod 24. When the screw rod 24 stops rotating, the threads on the inside of the movable plate 212 and the screw rod 24 are locked and are not moved by external forces other than the rotation of the screw rod 24.

[0048] The same applies to the rotation of the rotating ring 22, but it has no resistance to the horizontal rotation of the screw rod 24, so it rotates along with the screw rod 24. When the moving plates 212 move towards each other, the rotating ring 22 drives the pressure rod 221 to rotate to the position of the second fixed plate 238. The pressure of the pressure block 222 on the force plate 235 lifts the mounting rod 23. The fixed tooth 239 can slide on the inner side of the second fixed plate 238 to ensure the stability of the rotation of the rotating tooth 236.

[0049] Reference Figure 5 , Figure 6 and Figure 10A force-bearing plate 235 is fixedly connected to the side of the mounting rod 23. The top end of the force-bearing plate 235 is connected to the bottom end of the pressure block 222. A rotating tooth 236 is fixedly connected to the side of the mounting rod 23. An I-shaped shaft 237 is connected to the side of the mounting rod 23. A second fixing plate 238 is connected to the top end of the I-shaped shaft 237. A fixing tooth 239 is connected to the inner side of the second fixing plate 238. The top end of the fixing tooth 239 meshes with the side of the rotating tooth 236. The bottom end of the second fixing plate 238 is fixedly connected to the top end of the load-bearing plate 101.

[0050] When testing the thickness of the material 5 to be tested, the high limit lamp 231 and the low limit lamp 232 work together. Mounting rods 23 are placed on both sides of the material 5 to be tested, with both ends at the same height. When the light signals emitted by the high limit lamp 231 and the low limit lamp 232 at both ends appear simultaneously or are simultaneously blocked, an alarm is triggered and displayed on the operation panel. If this occurs, the material 5 to be tested needs to be processed again before the flatness test is performed. When only the signal emitted by the high limit lamp 231 is received by the other side, it indicates that the thickness of the material 5 to be tested is within the standard dimensional range, and the subsequent test of its surface flatness can proceed.

[0051] Reference Figures 7 to 9 The bottom of the rotating motor 311 is fixedly connected to the platform 312, the side of the platform 312 is fixedly connected to the control rod 313, the top of the control rod 313 is fixedly connected to the reciprocating motor 314, the side of the reciprocating motor 314 is fixedly connected to the side of the moving mechanism 4, and the bottom of the buffer plate 322 is provided with a connecting groove 328.

[0052] The connecting groove 328 is fixedly connected to the inner side of the exhaust pipe 326, the top of the connecting groove 328 is provided with a buffer cavity 324, the bottom of the exhaust pipe 326 is fixedly connected to a suction cup 325, the top of the suction cup 325 is fixedly connected to a pressure sensor 327, and the bottom of the suction cup 325 is connected to the side of the material to be tested 5.

[0053] The moving mechanism 4 includes an L-shaped carrying plate 401, a rotating groove 402 on the side of the L-shaped carrying plate 401, a control rod 313 connected to the inner side of the rotating groove 402, a slider 403 fixedly connected to the side of the L-shaped carrying plate 401, the side of the slider 403 connected to the inner side of the moving groove 109, a solenoid 405 threadedly connected to the top of the L-shaped carrying plate 401, and an adjusting motor 404 fixedly connected to the top of the solenoid 405.

[0054] After thickness measurement, surface flatness is measured again. The pressure sensor 327, in contact with the surface of the material to be tested 5, controls the circuit's opening and closing. The opening and closing of the circuit is indicated by indicator light 323. Gas from inside the suction cup 325 is drawn into the cylinder 32 via the air guide tube 321, causing the tip of the suction cup 325 to contact the material to be tested 5.

[0055] The working principle of this invention is as follows: The material to be tested 5 is placed above the conveyor belt 103. The support box 105, placed inside the conveyor belt 103, is fixed to the side of the load-bearing plate 101 by the support rod 107, so as not to affect the normal rotation of the conveyor belt 103. The conveyor belt 103 moves the material to be tested 5 to a fixed position. Before the material to be tested 5 enters the fixed area of ​​the clamping plate 21, the screw 24 rotates after being driven by the rotary motor 241. The moving plate 212 approaches the end of the screw 24, and the rotation of the end of the screw 24... The ring 22 will rotate and rotate the pressure block 222 at the top of the pressure rod 221 onto the force plate 235 fixed on the side of the mounting rod 23. The rotational force of the spiral rod 24 will gradually increase the force applied by the pressure block 222 to the force plate 235, thereby rotating the mounting rod 23 around the I-shaped shaft 237 to achieve the lifting action. The rotating tooth 236 fixed at the bottom of the mounting rod 23 rotates and is fixed on the side of the fixed tooth 239, which can fix the selected angle of the support mounting rod 23. At this time, the material to be tested 5 enters the support box 105 above the support without obstruction.

[0056] When the material to be tested 5 enters the area that can be fixed by the clamping plate 21, the operation of the drive motor 108 is stopped, and the operation of the rotary motor 241 is started. The moving plate 212 slides on the side of the screw rod 24 to fix the material to be tested 5 on its inner side. At the same time, the rotating ring 22 also rotates, moving the pressure block 222 from the top of the force plate 235 to the other side of the screw rod 24. The placement rod 23 will descend to the inner side of the first fixed plate 234 through the meshing of the rotating teeth 236 and the fixed teeth 239. The thickness of the material to be tested 5 is first detected by the high limit light 231 and the low limit light 232 fixed on the side of the placement rod 23. If the detection is qualified, the surface flatness is further detected. If the detection is unqualified, there is no need to continue to the next step of detection. The rotary motor 241 is started to place the material to be tested 5 on the conveyor belt 103 from the top. Then, the drive motor 108 is started to move the next material to be tested 5 to the top of the support box 105 for detection.

[0057] Once the thickness of the material 5 to be tested meets the requirements, the flatness of its surface is tested. The end of the stage 312 connected to the cylinder 32 is oriented toward the material 5 to be tested. The movement of the L-shaped carrier plate 401 causes the suction cup 325 fixed at the bottom of the buffer plate 322 to contact the surface of the material 5 to be tested and press down a certain distance to ensure that the bottom of the suction cup 325 contacts the material 5 to be tested. The cylinder 32 is then activated to draw the gas inside the suction cup 325 to the inside of the cylinder 32. When the pressure sensor 327 fixed at the top of the suction cup 325 contacts the material 5 to be tested, it is equivalent to closing the switch. Multiple suction cups 325 have pressure sensors 327 fixed at their tops, and the pressure sensors 327 are connected in series. An indicator light 323 is also connected in series in the series circuit of the pressure sensors 327. When all the pressure sensors 327 contact the material 5 to be tested at the same time, the circuit is closed and the indicator light 323 lights up.

[0058] If several pressure sensors 327 transmit electrical signals but the indicator light 323 remains off, it indicates that the surface of the material to be tested 5 is not smooth enough. By starting the reciprocating motor 314, the control lever 313 is driven to rotate the abrasive disc 31 to the top of the material to be tested 5. The L-shaped carrier plate 401 is then controlled to move the abrasive disc 31 to a suitable position for secondary grinding of the material to be tested 5. The electrical signals transmitted by the pressure sensors 327 can determine the tilt state of the surface of the material to be tested 5, thereby better controlling the distance the abrasive disc 31 moves.

[0059] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A surface leveling device for a large-size wet friction pad substrate, comprising a support mechanism (1), characterized in that, Also includes: The testing mechanism (2), the grinding mechanism (3) and the moving mechanism (4) are provided. The side of the supporting mechanism (1) is connected to the side of the testing mechanism (2). The inner side of the supporting mechanism (1) is fixedly connected to the bottom end of the moving mechanism (4). The side of the grinding mechanism (3) is fixedly connected to the side of the moving mechanism (4). The top of the supporting mechanism (1) is connected to the material to be tested (5). The side of the testing mechanism (2) is connected to the side of the material to be tested (5). The detection mechanism (2) includes a mounting rod (23), a high limit lamp (231) and a low limit lamp (232). The side of the mounting rod (23) is fixedly connected to the side of the high limit lamp (231), and the side of the mounting rod (23) is fixedly connected to the side of the low limit lamp (232). A first fixing plate (234) is connected to the side of the mounting rod (23), and the bottom end of the first fixing plate (234) is fixedly connected to the top end of the support mechanism (1). The grinding mechanism (3) includes an abrasive disc (31) and a cylinder (32). The bottom end of the cylinder (32) is fixedly connected to an air guide pipe (321). The bottom end of the air guide pipe (321) is fixedly connected to a buffer disc (322). The top end of the buffer disc (322) is fixedly connected to an indicator light (323). The bottom end of the abrasive disc (31) is fixedly connected to a rotating motor (311). The top end of the abrasive disc (31) is connected to the side of the material to be tested (5).

2. The surface smoothing device for a large-size wet friction pad substrate according to claim 1, characterized in that: The support mechanism (1) includes a load-bearing plate (101) and a conveyor belt (103). A support plate (102) is fixedly connected to the top of the load-bearing plate (101). A roller (104) is connected to the side of the conveyor belt (103). A support rod (107) is fixedly connected to the inner side of the roller (104). The side of the support rod (107) is connected to the side of the load-bearing plate (101). A support box (105) is fixedly connected to the side of the support rod (107). A through groove (106) is opened on the side of the support box (105). The inner side of the through groove (106) is connected to the side of the detection mechanism (2).

3. The surface smoothing device for a large-size wet friction pad substrate according to claim 2, characterized in that: The top of the support plate (102) is provided with a fixing groove (110), the inner side of the fixing groove (110) is connected to the side of the moving mechanism (4), the bottom of the fixing groove (110) is provided with a moving groove (109), the inner side of the moving groove (109) is connected to the side of the moving mechanism (4), the top of the support rod (107) is fixedly connected with a drive motor (108), and the side of the drive motor (108) is fixedly connected to the side of the load-bearing plate (101).

4. The surface smoothing device for a large-size wet friction pad substrate according to claim 1, characterized in that: The detection mechanism (2) includes a clamping plate (21) and a spiral rod (24). A connecting rod (211) is fixedly connected to the side of the clamping plate (21). A moving plate (212) is fixedly connected to the top of the connecting rod (211). The bottom end of the moving plate (212) is threadedly connected to the side of the spiral rod (24). A rotary motor (241) is fixedly connected to the top of the spiral rod (24). A protective plate (242) is fixedly connected to the bottom of the spiral rod (24). The side of the spiral rod (24) is connected to the inner side of the through groove (106). The side of the rotary motor (241) is fixedly connected to the top of the load-bearing plate (101). A rotating ring (22) is threadedly connected to the side of the spiral rod (24). A pressure rod (221) is fixedly connected to the side of the rotating ring (22). A pressure block (222) is fixedly connected to the top of the pressure rod (221).

5. The surface smoothing device for a large-size wet friction pad substrate according to claim 1, characterized in that: A force-bearing plate (235) is fixedly connected to the side of the mounting rod (23). The top end of the force-bearing plate (235) is connected to the bottom end of the pressure block (222). A rotating tooth (236) is fixedly connected to the side of the mounting rod (23). An I-shaped shaft (237) is connected to the side of the mounting rod (23). A second fixing plate (238) is connected to the top end of the I-shaped shaft (237). A fixing tooth (239) is connected to the inner side of the second fixing plate (238). The top end of the fixing tooth (239) meshes with the side of the rotating tooth (236). The bottom end of the second fixing plate (238) is fixedly connected to the top end of the load-bearing plate (101).

6. The surface smoothing device for a large-size wet friction pad substrate according to claim 1, characterized in that: The bottom end of the rotating motor (311) is fixedly connected to a platform (312), the side of the platform (312) is fixedly connected to a control rod (313), the top end of the control rod (313) is fixedly connected to a reciprocating motor (314), the side of the reciprocating motor (314) is fixedly connected to the side of the moving mechanism (4), and the bottom end of the buffer plate (322) is provided with a connecting groove (328).

7. The surface smoothing device for a large-size wet friction pad substrate according to claim 6, characterized in that: An exhaust pipe (326) is fixedly connected to the inner side of the connecting groove (328). A buffer cavity (324) is opened at the top of the connecting groove (328). A suction cup (325) is fixedly connected to the bottom of the exhaust pipe (326). A pressure sensor (327) is fixedly connected to the top of the suction cup (325). The bottom of the suction cup (325) is connected to the side of the material to be tested (5).

8. The surface smoothing device for a large-size wet friction pad substrate according to claim 1, characterized in that: The moving mechanism (4) includes an L-shaped carrying plate (401), a rotating groove (402) is provided on the side of the L-shaped carrying plate (401), a control rod (313) is connected to the inner side of the rotating groove (402), a slider (403) is fixedly connected to the side of the L-shaped carrying plate (401), the side of the slider (403) is connected to the inner side of the moving groove (109), a solenoid (405) is threadedly connected to the top of the L-shaped carrying plate (401), and an adjusting motor (404) is fixedly connected to the top of the solenoid (405).

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