Clutch pad selection measurement and travel recheck device and method

Abstract

The application discloses a clutch selected pad measuring and stroke rechecking device and a method thereof, wherein the clutch selected pad measuring and stroke rechecking device comprises a rack, a workbench arranged on the rack, a friction plate assembling station, a selected pad rechecking station and a conveying mechanism. The scheme rechecks the selected pad result while simulating the actual use state of the product, guarantees the product quality, applies a certain pre-tightening force to the parts, ensures the tightness of the cooperation between the parts in the measuring process, avoids the cooperation error caused by the assembling gap between the parts, and ensures the accuracy of the test result.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobiles, in particular to a clutch selected pad measuring and stroke rechecking device and method thereof. BACKGROUND

[0002] The power of a hybrid vehicle can be coupled by an engine and an electric motor, or driven by an electric motor alone. At present, most vehicle models on the market have a single or multiple electric motors arranged inside the transmission, and the coupling process of the engine and the electric motor is completed through the combination of the clutch. The performance of the clutch determines whether the transmission system of two different driving units and different speeds can provide power to the vehicle with maximum efficiency. The accurate control of the idle stroke distance of the clutch friction plate is a decisive factor affecting the performance of the friction plate. However, due to the size deviation of the internal parts of the clutch during the machining process, an adjusting steel sheet with a certain thickness is usually used to eliminate the fitting error between the parts during the assembly of the clutch. Since the fitting error values of the internal parts of different workpieces are different, the thickness of the adjusting steel sheet needs to be selected by measuring the fitting error value of the internal parts of the workpiece in real time. The commonly used clutch measuring and selected pad method mainly adopts the manual cooperation of tooling and measuring fixture to complete the measurement. The measurement accuracy is affected by human factors and methods, and after the selected pad is completed, the idle stroke of the clutch is not rechecked, and the quality of the assembled product cannot be guaranteed. SUMMARY

[0003] Therefore, in order to solve the above problems, the present application provides a clutch selected pad measuring and stroke rechecking device and method thereof.

[0004] The present application is realized by the following technical solutions:

[0005] The clutch selected pad measuring and stroke rechecking device comprises a rack, a workbench arranged on the rack, and the workbench comprises:

[0006] The friction plate assembly station is arranged at one end of the workbench and comprises a camera and a friction plate positioning seat arranged opposite to the camera;

[0007] The selected pad rechecking station is arranged at the other end of the workbench and comprises a plugging ventilation mechanism and a measuring assembly arranged on the top of the plugging ventilation mechanism in a lifting manner, the measuring assembly comprises a mounting frame driven by a first driving mechanism to move up and down, the bottom of the mounting frame is arranged with a movable measuring plate in a lifting manner, and sensors for measuring the positions of the parts are arranged on the mounting frame and the movable measuring plate respectively;

[0008] The conveying mechanism comprises a guide rail arranged between the friction plate assembly station and the selected pad rechecking station, and a sliding table movably arranged on the guide rail, and the sliding table is provided with a mounting hole for fixing the workpiece.

[0009] Preferably, a first guide column is vertically arranged at the bottom of the mounting frame, a first spring is arranged around the outer periphery of the first guide column, the first guide column penetrates the movable measuring plate, and the first spring is in abutment with the lower surface of the mounting frame and the upper surface of the movable measuring plate respectively, the movable measuring plate is driven to move along the first guide column by a measuring cylinder.

[0010] Preferably, an active measuring assembly is arranged on the movable measuring plate, the active measuring assembly comprises a hook jaw seat, a second sensor and a second guide column arranged on the hook jaw seat, a second spring is arranged around the outer periphery of the second guide column, a homing cylinder is arranged at the top of the second guide column and is used to selectively push the second guide column and the hook jaw seat to move downward, the second sensor is arranged on the movable measuring plate and is connected with the hook jaw seat through an elastic member.

[0011] Preferably, a hook jaw for positioning the inner along top of the outer hub is arranged around the outer periphery of the hook jaw seat, a pin shaft is arranged at one end of the hook jaw, the two ends of the pin shaft are fixed with the hook jaw seat, a hook jaw chamfer is arranged at the other end of the hook jaw, the hook jaw rotates around the pin shaft and drives the hook jaw chamfer to move to the outside or the inside of the hook jaw seat.

[0012] Preferably, a compression spring is arranged between the hook jaw and the hook jaw seat, a pushing cylinder is arranged outside the hook jaw, a hook jaw pushing rod is arranged between the pushing cylinder and the hook jaw, the hook jaw pushing rod selectively contacts the hook jaw and pushes the hook jaw to move to the hook jaw seat.

[0013] Preferably, a homing reference foot is further arranged at the bottom of the movable measuring plate.

[0014] Preferably, a first sensor is arranged at the bottom of the mounting frame, the first sensor penetrates the movable measuring plate, and the contact of the first sensor is flush with the bottom of the homing reference foot.

[0015] Preferably, a telescopic center is further arranged at the bottom of the movable measuring plate and is used to position the top input shaft, the telescopic center is coaxial with the movable measuring plate.

[0016] Preferably, the plugging ventilation mechanism comprises a plugging head, a guide bracket and a plugging head guide sleeve, the plugging head is arranged on the guide bracket and is coaxial with the telescopic center, the guide bracket is driven by a plugging cylinder to move up and down along the plugging head guide sleeve.

[0017] The clutch selected pad measuring and stroke rechecking method uses the clutch selected pad measuring and stroke rechecking device as any of the above, and comprises the following steps:

[0018] S1: Overlappingly place the inner friction plate and the outer friction plate to be installed in the friction plate positioning seat, and then place them in the outer hub after positioning by the camera;

[0019] S2: The sliding table on which the outer hub and the input shaft are placed is moved to the selected pad re-inspection station, the workpiece is measured and lowered until the in-place reference foot contacts the uppermost layer of the inner friction plate, and a pressure of 200N is applied to the friction plate, the first sensor tests the height of the upper surface of the uppermost layer of the inner friction plate at this time, the in-place cylinder pushes the hook jaw seat to descend, after the inner top of the outer hub, the in-place cylinder and the push cylinder are disconnected and released, the hook jaw seat rises and the hook jaw is pushed to rotate outward of the hook jaw seat by the force of the compression spring, the hook jaw chamfer on the hook jaw hooks the inner top of the outer hub, the second sensor tests the rising height of the hook jaw seat and measures the height of the inner top of the outer hub, and the height difference B between the height of the inner top of the outer hub and the height of the upper surface of the uppermost layer of the inner friction plate is calculated by the upper computer;

[0020] S3: The adjusting steel sheet is selected according to the height difference B and the thickness C of the inner snap ring, wherein B-C-t=0.9±0.1, t is the thickness of the adjusting steel sheet suitable for the workpiece, and after the workpiece is assembled with the adjusting steel sheet and the inner snap ring, the workpiece returns to the selected pad re-inspection station;

[0021] S4: The assembly is measured and lowered until the in-place reference foot contacts the upper surface of the adjusting steel sheet, a pressure of 200N is applied to the adjusting steel sheet, and the height value E of the upper surface of the adjusting steel sheet is measured and recorded;

[0022] S5: After the plugging head is connected with the input shaft and then moves upward, the plugging head is ventilated, the piston in the inner hub pushes the inner friction plate, the outer friction plate, the adjusting steel sheet and the inner snap ring to rise, at this time, the first sensor measures and records the height value F of the upper surface of the adjusting steel sheet, the system calculates the height difference between F and E, if F-E=0.9±0.1, the re-inspection is qualified, otherwise, it is unqualified, and steps S1-S5 are repeated until the re-inspection is qualified.

[0023] The beneficial effects of the technical scheme of the present application mainly include:

[0024] 1. The assembly and detection of the internal parts of the clutch are completed by the clutch selected pad measuring and stroke re-inspection device, the assembly efficiency is high, and the idle stroke distance of the clutch friction plate can be accurately controlled. When the inner friction plate and the outer friction plate are assembled, real-time positioning is realized through the camera, and the assembly error between the friction plates is reduced; during the selected pad and detection process, a certain pressure is applied to the internal parts of the clutch in advance, so that the tightness of the cooperation between the parts during the measurement process is ensured, the assembly gap between the parts is avoided to cause the cooperation error, and at the same time, the same pressure is applied to the internal parts of the clutch during the selected pad and detection process, so that the accuracy of the test result is ensured.

[0025] 2、 After assembly is completed, the completed workpiece is rechecked, the input shaft is ventilated, the piston pushes the inner friction plate, the outer friction plate, the adjusting steel sheet and the inner snap ring to lift, and the height of the selected pad under the pre-tightening force is measured, the height difference of the two is compared, the clutch idle stroke distance is simulated, and whether the selected pad is qualified is determined through the clutch idle stroke distance, the selected pad result is rechecked while simulating the actual use state of the product, and the product quality is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic diagram of a clutch part assembly to be tested;

[0027] Figure 2 is a partial schematic diagram of a clutch part assembly to be tested (at this time, the adjusting steel sheet is not installed);

[0028] Figure 3 is a partial schematic diagram of a clutch part assembly to be tested (at this time, the adjusting steel sheet has been installed);

[0029] Figure 4 is a partial sectional schematic diagram of a clutch part assembly to be tested (at this time, the adjusting steel sheet has been installed);

[0030] Figure 5 is a schematic diagram of a clutch selected pad measuring and stroke rechecking device;

[0031] Figure 6 is a friction plate assembly station schematic diagram;

[0032] Figure 7 is a schematic diagram of the working state of the clutch part assembly to be tested and the conveying mechanism;

[0033] Figure 8 is a schematic diagram of the structure of the plugging ventilation mechanism;

[0034] Figure 9 is a schematic diagram of the structure of the plugging support;

[0035] Figure 10 is a schematic diagram of the structure of the plugging head and the guide support;

[0036] Figure 11 is a schematic diagram of the structure of the measuring assembly;

[0037] Figure 12 is a schematic diagram of the connection state of the mounting bracket and the movable measuring plate;

[0038] Figure 13 is a schematic diagram of the structure of the mounting bracket and the assembly thereon at the first angle;

[0039] Figure 14 is a schematic diagram of the structure of the mounting bracket and the assembly thereon at the second angle;

[0040] Figure 15 is a bottom view of the mounting rack and the components thereon;

[0041] Figure 16 is a structural schematic view of the movable measuring plate and the components thereon at a first angle;

[0042] Figure 17 is a structural schematic view of the movable measuring plate and the components thereon at a second angle;

[0043] Figure 18 is a top view of the movable measuring plate and the components thereon;

[0044] Figure 19 is a bottom view of the movable measuring plate and the components thereon;

[0045] Figure 20 is a structural schematic view of the movable measuring assembly;

[0046] Figure 21 is a schematic view of the state when the pushing hook of the pushing air cylinder is rotated to the hook seat;

[0047] Figure 22 is a partial schematic view of the hook seat;

[0048] Figure 23 is a partial schematic view of the relative position between the movable measuring assembly and the reference foot of the present application. DETAILED DESCRIPTION

[0049] In order to make the purpose, advantages and characteristics of the present application more clear and detailed, the following non-restrictive description of the preferred embodiments will be used for illustration and explanation. The embodiments are only typical examples of the application of the technical solutions of the present application, and any technical solutions formed by equivalent replacement or equivalent transformation are within the scope of the present application.

[0050] It is declared that in the description of the scheme, the terms “center”, “upper”, “lower”, “left”, “right”, “front”, “back”, “inner”, “outer” and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0051] In addition, the terms “first” and “second” in the present scheme are only for the purpose of description, and cannot be understood as indicating or implying the order of importance, or implicitly indicating the number of the indicated technical features. Therefore, the features limited by “first” and “second” can explicitly or implicitly include one or more of the features. In the present application, the meaning of “multiple” is two or more, unless otherwise specifically limited.

[0052] This invention discloses a device and method for measuring clutch pad selection and re-inspecting stroke.

[0053] like Figures 1-4 As shown, the clutch component assembly to be tested includes an input shaft 1, an outer hub 2, an inner friction plate 3, an outer friction plate 7, an adjusting steel plate 4, an inner retaining ring 5, and a piston 6. A thin tube is provided inside the input shaft 1, and a through hole communicating with the thin tube is provided at the bottom of the input shaft 1.

[0054] like Figures 2-4 As shown, three sets of inner friction plates 3 and three sets of outer friction plates 7 need to be alternately installed into the outer hub 2. Then, the steel plate 4 is selected and adjusted according to the height difference between the upper surface of the top inner friction plate 3 and the top of the inner edge of the outer hub 2 and the thickness of the inner retaining ring 5.

[0055] like Figures 5-23 As shown, the clutch shim measuring and stroke re-inspection device includes a frame, on which a worktable 8 is mounted. The clutch shim measuring and stroke re-inspection device further includes:

[0056] Friction plate assembly station, such as Figure 5 , Figure 6 As shown, the friction plate assembly station is located at one end of the workbench 8, including a camera 11 and a friction plate positioning seat 13 opposite to the camera 11. The friction plate positioning seat 13 is used to position the inner friction plate 3 and the outer friction plate 7 to be assembled. The camera 11 is mounted on the workbench 8 via a camera bracket 12. In one embodiment, the friction plate positioning seat 13 includes a first positioning block for defining the position of the inner friction plate 3. The outer peripheral surface of the positioning block is provided with a first limiting tooth that matches the shape of the inner peripheral surface of the inner friction plate 3. The friction plate positioning seat 13 also includes second positioning blocks disposed at both ends of the friction plate positioning seat 13 for positioning the position of the outer friction plate 7. The inner wall of the second positioning block is provided with a second limiting tooth that matches the shape of the outer peripheral surface of the outer friction plate 7. When the inner friction plate 3 and the outer friction plate 7 are assembled on the friction plate positioning seat 13, the camera 11 is aligned with the outer periphery of the inner friction plate 3 and the outer friction plate 7 and the assembly position of the inner friction plate 3 and the outer friction plate 7 is observed in real time.

[0057] In one embodiment, such as Figure 5 As shown, the workbench 8 is also equipped with a material box 10 for storing the inner friction plate 3, the outer friction plate 7, the adjusting steel plate 4, and the inner retaining ring 5.

[0058] The pad selection and re-inspection station is located at the other end of the workbench 8 and includes a sealing and ventilation mechanism and a measuring component that can be raised and lowered on top of the sealing and ventilation mechanism.

[0059] As shown in Figure 11 , Figure 12 the measuring assembly comprises a mounting frame 24 driven up and down by a first driving mechanism 22, which is a servo motor or a pneumatic cylinder, and a movable measuring plate 25 arranged on the bottom of the mounting frame 24 in a liftable manner, and the measuring assembly is fixed on the workbench 8 by a measuring assembly support 23.

[0060] In an embodiment, the bottom of the mounting frame 24 is vertically provided with a first guide column 27, the outer periphery of which is sleeved with a first spring 30, and the movable measuring plate 25 is provided with a guide sleeve, the first guide column 27 passes through the movable measuring plate 25 from the guide sleeve, and the first spring 30 respectively abuts against the lower surface of the mounting frame 24 and the upper surface of the movable measuring plate 25. The movable measuring plate 25 is driven by a measuring cylinder 26 to move along the first guide column 27, so that the movable measuring plate 25 is arranged in a floating manner on the bottom of the mounting frame 24. Specifically, in a first state, the measuring cylinder 26 is ventilated and drives the movable measuring plate 25 to move upward along the first guide column 27, and at this time, the first spring 30 is contracted; in a second state, the measuring cylinder 26 is cut off, the first spring 30 is reset and drives the movable measuring plate 25 to move downward along the first guide column 27.

[0061] In a preferred embodiment, the guide rod of the measuring cylinder 26 is coaxially arranged with the movable measuring plate 25, the bottom of the mounting frame 24 is vertically provided with three or more first guide columns 27, the first guide columns 27 are arranged at equal angles on the bottom of the mounting frame 24, and the movable measuring plate 25 is provided with guide seats 32 matched with the number and position of the first guide columns 27.

[0062] The mounting frame 24 and the movable measuring plate 25 are respectively provided with sensors for measuring the positions of the parts, wherein, as shown in Figures 11-19As shown, the first sensor is fixed on the bottom of the mounting rack 24 through a sensor support 29, the first sensor passes through the movable measuring plate 25, the bottom of the movable measuring plate 25 is also provided with a to-position reference foot 37, the contact of the first sensor is flush with the bottom of the to-position reference foot 37, specifically, before the adjustment steel sheet 4 is selected, the height of the upper surface of the uppermost inner friction sheet 3 is determined by the to-position reference foot 37, and pressure is applied to the friction sheet to reduce the assembly error between the inner friction sheet 3 and the outer friction sheet 7, at the same time, the contact of the first sensor contacts the upper surface of the uppermost inner friction sheet 3, and the height value is measured, and the numerical value is transmitted to the host terminal; after the adjustment steel sheet 4 is selected and assembled with the inner snap ring 5, the height of the upper surface of the adjustment steel sheet 4 is determined by the to-position reference foot 37, and pressure is applied to the adjustment steel sheet 4, at the same time, the contact of the first sensor contacts the upper surface of the adjustment steel sheet 4, and the height value is measured, and the numerical value is transmitted to the host terminal; in a preferred embodiment, the bottom of the movable measuring plate 25 is provided with three or more to-position reference feet 37 at equal angles, the first sensor is the same as the number of to-position reference feet 37, and the first sensor is a pen-type sensor, the contact of the pen-type sensor is retractable.

[0063] As shown in the figure, Figures 20-23 The movable measuring plate 25 is provided with a movable measuring assembly, the movable measuring assembly includes a hook seat 40, a second sensor 33 and a second guide column 34 arranged on the hook seat 40, the outer periphery of the second guide column 34 is sleeved with a second spring 35, the top of the second guide column 34 is provided with a to-position air cylinder 31 which can selectively push the second guide column 34 and the hook seat 40 to move downward, the movable measuring plate is provided with a second guide sleeve 36 corresponding in number and position to the second guide column 34, the second guide column 34 passes through the second guide sleeve 36 and is arranged on the movable measuring plate, and the second sensor 33 is arranged on the movable measuring plate 25 and is retractably connected with the hook seat 40 through an elastic member.

[0064] The outer periphery of the hook seat 40 is provided with a hook 38 for positioning the inner side of the outer hub 2, one end of the hook 38 is provided with a pin shaft 41, both ends of the pin shaft 41 are fixed with the hook seat 40, the other end of the hook 38 is provided with a hook chamfer, the hook 38 rotates around the pin shaft 41 and drives the hook chamfer to move to the outside or inside of the hook seat 40, a compression spring 45 is arranged between the hook 38 and the hook seat 40, the hook 38 is provided with a pushing air cylinder 39, the pushing air cylinder 39 is fixed on the movable measuring plate 25 through a pushing air cylinder support 42, and the pushing air cylinder 39 drives the hook 38 to move to the hook seat 40.

[0065] In a preferred embodiment, a claw pushing rod 43 is further arranged between the pushing cylinder 39 and the claw 38, the claw pushing rod 43 is fixed at the bottom of the movable measuring plate 25 through a claw pushing rod support 44, the pushing cylinder 39 is connected with the claw pushing rod 43, the claw pushing rod 43 is selectively contacted with the claw 38 and pushes the claw pushing rod 43 to move towards the claw 38, the pushing cylinder 39 is fixed on the movable measuring plate 25 through a pushing cylinder 39 support, the claw pushing rod 43 is fixed on the movable measuring plate 25 through a pushing rod support, specifically, in the first state, the pushing cylinder 39 is ventilated and drives the claw pushing rod 43 to move towards the claw 38, the claw pushing rod 43 contacts the claw 38 and pushes the claw 38 to rotate around the pin shaft 41 into the claw seat 40, so as to facilitate the claw 38 to avoid the friction plate, at this time, the compression spring 45 is compressed; in the second state, the pushing cylinder 39 is de-ventilated and drives the claw pushing rod 43 to move away from the claw 38, the pushing force of the claw pushing rod 43 on the claw 38 disappears, the compression spring 45 resets and drives the claw 38 to rotate around the pin shaft 41 out of the claw seat 40 to be opened, so as to facilitate the claw chamfer hook on the claw 38 to hook the inner top of the outer hub 2.

[0066] As shown in Figures 16-19 , the bottom of the movable measuring plate 25 is further provided with a telescopic center 46 for positioning the input shaft 1, the telescopic center 46 is coaxial with the movable measuring plate 25, when the to-be-measured clutch assembly moves to the selected pad re-inspection station, the telescopic center 46 is inserted into the top center of the input shaft 1 to position the to-be-measured clutch assembly, when the telescopic center 46 is inserted into the top center of the input shaft 1, the bottom of the input shaft 1 is positioned with the plugging ventilation mechanism.

[0067] As shown in Figures 8-10 , the plugging ventilation mechanism includes a plugging head 20, a guide support 21 and a plugging head guide sleeve 47, the plugging head 20 is arranged on the guide support 21 and is coaxial with the telescopic center 46, the guide support 21 is driven by the plugging cylinder 19 to move up and down along the plugging head guide sleeve 47, the guide support 21 is fixed on the bottom of the workbench 8 through a plugging support 18, when the telescopic center 46 is inserted into the top center of the input shaft 1, the through hole at the bottom of the input shaft 1 is communicated with the plugging head 20, the plugging head 20 is connected with an air path.

[0068] As shown in Figure 7As shown, the clutch selected pad measurement and stroke rechecking device further comprises a conveying mechanism, the conveying mechanism comprising a guide rail 16 arranged between the friction plate assembly station and the selected pad rechecking station, and a sliding table 15 movably arranged on the guide rail 16, a sliding block 17 being arranged between the sliding table 15 and the guide rail 16, the sliding table 15 being driven to move on the guide rail 16 by a sliding table air cylinder 14, and mounting holes for fixing workpieces being arranged on the sliding table 15.

[0069] In an embodiment, a data panel 9 for displaying measurement data is further arranged on the rack, and after the first sensor and the second sensor 33 measure the respective height values, the respective height values and data such as the thickness of the adjusted steel sheet 4 are displayed through the data panel 9.

[0070] The application further discloses a clutch selected pad measurement and stroke rechecking method, which uses the clutch selected pad measurement and stroke rechecking device as described above and comprises the following steps.

[0071] S1: Overlapping the inner friction plate 3 and the outer friction plate 7 to be installed in the friction plate positioning seat 13, and placing them in the outer hub 2 after positioning by the camera 11;

[0072] Specifically, the workpiece to be assembled, which is assembled with the outer hub 2 and the input shaft 1, is placed on the sliding table 15 in advance, positioned by the camera 11 and the friction plate positioning seat 13, and the inner friction plate 3 and the outer friction plate 7 are staggered and arranged according to the assembly rule, and then the assembled inner friction plate 3 and outer friction plate 7 are placed inside the outer hub 2.

[0073] S2: Moving the sliding table 15, on which the outer hub 2 and the input shaft 1 are placed, to the selected pad rechecking station, measuring the workpiece to drop until the in-place reference foot 37 contacts the uppermost layer of inner friction plate 3, and applying a pressure of 200 N to the friction plate, the first sensor testing the height of the upper surface of the uppermost layer of inner friction plate 3 at this time, the in-place air cylinder 31 pushing the hook jaw seat 40 to drop, after entering the inner part of the outer hub 2, the in-place air cylinder 31 and the push air cylinder 39 are disconnected to release, the hook jaw seat 40 rises and the hook jaw 38 is pushed to rotate outward of the hook jaw seat 40 by the force of the compression spring 45, the hook jaw chamfer on the hook jaw 38 hooks the inner rim top of the outer hub 2, the second sensor 33 tests the rising height of the hook jaw seat 40 and measures the height of the inner rim top of the outer hub 2, and the height difference B between the height of the inner rim top of the outer hub 2 and the height of the upper surface of the uppermost layer of inner friction plate 3 is calculated by the upper computer.

[0074] Specifically, as Figure 4 shown, in order to select the adjusted steel sheet 4 with a suitable thickness, it is necessary to measure the direct height difference between the height of the inner rim top of the outer hub 2 and the height of the upper surface of the uppermost layer of inner friction plate 3 (i.e. the assemblable space of the adjusted steel sheet 4 and the inner retaining ring 5).

[0075] S3: Select the adjusting steel sheet 4 according to the height difference B and the thickness C of the inner snap ring 5, wherein B-C-t=0.9±0.1, t is the thickness of the adjusting steel sheet 4 suitable for the workpiece, and the workpiece returns to the selected pad re-inspection station after the adjusting steel sheet 4 and the inner snap ring 5 are assembled on the workpiece and the workpiece leaves the selected pad re-inspection station;

[0076] Specifically, as shown in Figure 4 , the height difference B is measured after 200N compression force is applied on the uppermost set of inner friction plates 3, the thickness C of the inner snap ring 5 is measured, the value t of the adjusting steel sheet 4 is calculated according to the formula B-C-t=0.9±0.1, and the adjusting steel sheet 4 is selected and assembled in the outer hub 2 and clamped with the inner snap ring 5, thereby completing the selection and assembly of the adjusting steel sheet 4.

[0077] S4: Measure the assembly to drop until the in-place reference foot 37 contacts the upper surface of the adjusting steel sheet 4, and apply 200N pressure to the adjusting steel sheet 4, and measure and record the height value E of the upper surface of the adjusting steel sheet 4;

[0078] S5: After the blocking head 20 moves up and connects with the input shaft 1, the blocking head 20 is ventilated, the piston 6 in the outer hub 2 pushes the inner friction plate 3, the outer friction plate 7, and the adjusting steel sheet 4 and the inner snap ring 5 to rise, at this time, the first sensor measures and records the height value F of the upper surface of the adjusting steel sheet 4, the system calculates the height difference between F and E, if F-E=0.9±0.1, the re-inspection is qualified; if not, it is unqualified, and steps S1-S5 are repeated until the re-inspection is qualified.

[0079] Specifically, in order to ensure the consistency of the re-inspection result with the measurement result in step S3 when assembled, 200N compression force needs to be applied on the adjusting steel sheet 4 in advance, as shown in Figure 4 , the height of the upper surface of the adjusting steel sheet 4 is set as E, the 200N compression force is cancelled, the input shaft 1 is ventilated in the bottom tube, the use state of the clutch is simulated, at this time, the piston 6 pushes the inner friction plate 3, the outer friction plate 7, and the adjusting steel sheet 4 to rise and the inner snap ring 5 abuts against the adjusting steel sheet 4, at this time, the height of the upper surface of the adjusting steel sheet 4 is recorded as F, and the difference between the height F and the height E is calculated to confirm whether F-E=0.9±0.1 is established.

[0080] The present application has various embodiments, and all technical solutions formed by equivalent transformation or equivalent transformation fall within the protection scope of the present application.

Claims

1. A clutch pad measuring and stroke re-inspection device, comprising a frame, wherein a worktable is provided on the frame, characterized in that: Also includes: The friction plate assembly station is located at one end of the worktable and includes a camera and a friction plate positioning seat opposite to the camera. The pad selection and re-inspection station is set at the other end of the workbench. It includes a sealing and ventilation mechanism and a measuring component that can be raised and lowered on the top of the sealing and ventilation mechanism. The measuring component includes a mounting frame that is driven to move up and down by a first driving mechanism. A movable measuring plate is raised and lowered at the bottom of the mounting frame. Sensors for measuring the position of the parts are respectively set on the mounting frame and the movable measuring plate. The conveying mechanism includes a guide rail disposed between the friction plate assembly station and the pad selection and re-inspection station, and a slide table movably disposed on the guide rail. The slide table is provided with mounting holes for fixing workpieces. A first guide post is vertically disposed at the bottom of the mounting frame. A first spring is sleeved on the outer periphery of the first guide post. The first guide post passes through a movable measuring plate, and the first spring abuts against the lower surface of the mounting frame and the upper surface of the movable measuring plate, respectively. The movable measuring plate is driven by a measuring cylinder to move along the first guide post. A telescopic center for positioning the top input shaft is also disposed at the bottom of the movable measuring plate. The telescopic center is coaxial with the movable measuring plate.

2. The clutch shim measuring and stroke re-inspection device according to claim 1, characterized in that: The movable measuring plate is provided with a movable measuring component, which includes a claw seat, a second sensor and a second guide post disposed on the claw seat. A second spring is sleeved on the outer periphery of the second guide post, and a positioning cylinder is provided at the top of the second guide post to selectively push the second guide post and the claw seat downward. The second sensor is disposed on the movable measuring plate and connected to the claw seat through an elastic element.

3. The clutch shim measuring and stroke re-inspection device according to claim 2, characterized in that: The outer periphery of the hook claw seat is provided with a hook claw for positioning the top of the inner edge of the outer hub. One end of the hook claw is provided with a pin, and both ends of the pin are fixed to the hook claw seat. The other end of the hook claw is provided with a hook claw chamfer. The hook claw rotates around the pin and drives the hook claw chamfer to move towards the outside or inside of the hook claw seat.

4. The clutch shim measuring and stroke re-inspection device according to claim 3, characterized in that: A compression spring is provided between the hook and the hook seat. A push cylinder is provided outside the hook. A hook push rod is provided between the push cylinder and the hook. The hook push rod can selectively contact the hook and push the hook to move towards the hook seat.

5. The clutch shim measuring and stroke re-inspection device according to claim 1, characterized in that: The bottom of the movable measuring plate is also equipped with positioning reference feet.

6. The clutch shim measuring and stroke re-inspection device according to claim 5, characterized in that: A first sensor is provided at the bottom of the mounting bracket. The first sensor passes through the movable measuring plate, and the contact of the first sensor is flush with the bottom of the positioning reference foot.

7. The clutch shim measuring and stroke re-inspection device according to claim 1, characterized in that: The sealing and ventilation mechanism includes a sealing head, a guide bracket, and a sealing head guide sleeve. The sealing head is mounted on the guide bracket and is coaxial with the telescopic tip. The guide bracket is driven by a sealing cylinder to move up and down along the sealing head guide sleeve.

8. A method for measuring and re-inspecting the travel of a clutch shim, characterized in that: Using the clutch shim measuring and stroke re-inspection device as described in any one of claims 1-7, the following steps are included: S1: Place the inner and outer friction plates to be installed overlapping in the friction plate positioning seat, and then place them into the outer hub after positioning by the camera; S2: Move the slide table containing the outer hub and input shaft to the pad selection and re-inspection station. Measure the workpiece as it descends until the reference foot contacts the top inner friction plate and apply a pressure of 200N to the friction plate. The first sensor measures the height of the upper surface of the top inner friction plate at this time. The positioning cylinder pushes the claw seat down. After it reaches the inside of the outer hub, the positioning cylinder and the push cylinder are de-pressed and released. The claw seat rises and the claw is pushed to rotate outward by the force of the compression spring. The chamfer on the claw hooks the top of the inner edge of the outer hub. The second sensor measures the height of the claw seat and measures the height of the top of the inner edge of the outer hub. The host computer calculates the height difference B between the top of the inner edge of the outer hub and the height of the upper surface of the top inner friction plate. S3: Select an adjustment steel plate based on the height difference B and the thickness C of the inner retaining ring, where BCt=0.9±0.1, and t is the thickness of the adjustment steel plate applicable to the workpiece. After the workpiece leaves the pad inspection station, assembles the adjustment steel plate and the inner retaining ring, and returns to the pad inspection station. S4: The measuring component descends until the reference foot contacts the upper surface of the adjusting steel plate, and a pressure of 200N is applied to the adjusting steel plate. The height value E of the upper surface of the adjusting steel plate is measured and recorded. S5: After the sealing head moves up and connects with the input shaft, the sealing head is vented, causing the piston inside the outer hub to push the inner friction plate, outer friction plate, adjusting steel plate, and inner retaining ring to rise. At this time, the first sensor measures and records the height value F of the upper surface of the adjusting steel plate. The system calculates the height difference between F and E. If FE = 0.9 ± 0.1, the re-inspection is qualified; otherwise, it is unqualified, and steps S1-S5 are repeated until the re-inspection is qualified.

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