A double-acting clutch automatic detection machine and automatic detection method

Abstract

This invention discloses an automatic testing machine and method for a double-acting clutch, relating to the field of clutch testing. The machine includes a base for placing and positioning the clutch to be tested; a sliding mechanism for sliding between a waiting position and a working position; a separation testing mechanism mounted on the sliding mechanism, comprising a drive component and a detection component. When the sliding mechanism is in the waiting position, a robot clamps and feeds the clutch; when the sliding mechanism is in the working position, the detection component measures the stroke and separation force of the clutch during separation; a clamping mechanism for clamping the clutch to be tested onto a positioning fixture; a locking mechanism for locking the sliding mechanism in the working position; and a control mechanism, including a PLC controller and a vision sensor communicatively connected to the PLC controller. The vision sensor sends a signal indicating the presence or absence of material to the PLC controller, which is communicatively connected to the robot. This invention offers advantages such as high automation, convenient and efficient testing.

Description

Technical Field

[0001] This invention relates to the field of clutch testing, and specifically to an automatic testing machine and method for a double-acting clutch. Background Technology

[0002] Double-acting clutches typically consist of two release assemblies: the primary clutch release lever assembly and the secondary clutch release lever assembly. Currently, the automation level of double-acting clutch testing is low, usually relying on manual inspection. Manual inspection is inefficient, time-consuming, labor-intensive, and prone to misjudgments, affecting product quality. Furthermore, existing automated clutch testing equipment is limited by the deformation caused by the spoke weighing sensor under stress, lacking stress deformation compensation, which affects testing accuracy and makes it difficult to obtain a true and accurate release stroke. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an automatic testing machine and method for a double-acting clutch, which has the advantages of high automation and convenient and efficient testing.

[0004] The objective of this invention is achieved through the following technical solution: an automatic testing machine for a double-acting clutch, comprising: A base, on which a platform is provided, and a positioning fixture is provided at the center of the platform for placing and positioning the clutch to be tested; A sliding mechanism, mounted on the platform, is used to slide between the waiting position and the working position; A separation test mechanism is provided on the sliding mechanism. The separation test mechanism includes a drive component and a detection component. When the sliding mechanism is in the waiting position, the robot clamps and feeds the clutch to be tested onto the positioning fixture. When the sliding mechanism is in the working position, the drive component drives the detection component to contact the clutch to be tested downward, thereby measuring the stroke and separation force of the clutch to be tested when it separates. The clamping mechanism, set on the platform, is used to clamp the clutch to be tested onto the positioning fixture; A locking mechanism, mounted on the platform and close to the working position, is used to lock the sliding mechanism in the working position; and The control mechanism includes a PLC controller and a photoelectric sensor that is communicatively connected to the PLC controller. The photoelectric sensor is used to determine whether there is a clutch to be tested on the positioning fixture and sends a material presence / absence signal to the PLC controller. The PLC controller is communicatively connected to the robot. At the same time, the PLC controller also controls the operation of the sliding mechanism, the separation test mechanism, the clamping mechanism and the locking mechanism through signals.

[0005] As a further technical solution, the sliding mechanism includes an upper crossbeam set above the platform. The upper crossbeam is slidably mounted on linear guide rails located on both sides of the platform via columns. A cylinder A is set on the outside of the linear guide rails. The slider of the cylinder A drives the column, causing the column to drive the upper crossbeam to slide along the linear guide rails. An end position sensor is provided at the working position to send an end position signal to the PLC controller when the sliding mechanism moves to the working position.

[0006] As a further technical solution, a hydraulic damper is fixed to the end of the linear guide rail via a damper fixing plate to limit the travel of the column sliding.

[0007] As a further technical solution, the drive assembly includes an electric cylinder and a servo motor. The electric cylinder is supported on the upper crossbeam by a support assembly. The servo motor is fixed on the upper crossbeam and connected to a large pulley via a small pulley and a synchronous belt. The large pulley drives the electric cylinder to rotate relative to the support assembly. The piston rod of the electric cylinder passes through the support assembly and the upper crossbeam in sequence and drives the detection assembly. The detection assembly includes a force sensor fixing plate fixed to the end of the piston rod. A wheel spoke weighing sensor and a force sensor connecting plate are installed in sequence below the force sensor fixing plate. The force sensor connecting plate is pressed by a separating head and a separating head fixing plate. A potentiometer is installed on the force sensor connecting plate, and the potentiometer pointer rests against the force sensor fixing plate. The potentiometer is used to detect the axial deformation of the wheel spoke weighing sensor to achieve displacement measurement compensation.

[0008] As a further technical solution, the support assembly includes a large pulley mounting plate, an outer bearing spacer, and an inner bearing spacer. The electric cylinder spacer is embedded in the large pulley mounting plate to support the electric cylinder. The upper part of the large pulley mounting plate is fixedly connected to the large pulley, and the lower part of the large pulley mounting plate is fixedly connected to the inner bearing spacer. The outer bearing spacer is fixed to the upper crossbeam by the outer bearing spacer mounting plate, and an angular contact bearing is installed between the inner bearing spacer and the outer bearing spacer.

[0009] As a further technical solution, the clamping mechanism adopts a magnetic cylinder, and two magnetic proximity sensors are arranged axially on the outer wall of the cylinder barrel of the magnetic cylinder, respectively corresponding to the locking working position and the loosening reset position of the magnetic cylinder. The magnetic proximity sensors are used to detect the piston's position and feed back to the PLC controller.

[0010] As a further technical solution, the locking mechanism includes a cylinder B and a locking pin. The cylinder B is mounted on a cylinder B fixing plate. The cylinder B fixing plate is fixed to the platform on both sides by equal-height columns. The locking pin is connected and driven by the cylinder B, and is used to pass through the linear bearing mounted on the platform and extend out of the platform, thereby contacting and abutting the column of the sliding mechanism to fix and lock the column.

[0011] An automatic testing method for a double-acting clutch, using the aforementioned automatic testing machine for double-acting clutches, includes the following steps: S1. When the test begins, the sliding mechanism is in the waiting position. First, the photoelectric sensor determines whether there is a clutch to be tested on the positioning fixture. Only when there is no clutch to be tested on the positioning fixture, the photoelectric sensor sends a no-material signal to the PLC controller. After receiving the no-material signal, the PLC controller sends a feeding signal to the robot to control the robot to feed the material. S2. After the material is loaded, the robot sends the loading completion signal to the PLC controller. The PLC controller sends an action signal to the clamping mechanism, which clamps the clutch to be tested onto the positioning fixture. S3. After the clamping is completed, the PLC controller sends an action signal to the sliding mechanism. Cylinder A drives the sliding mechanism to slide to the working position, and the position sensor sends a position signal to the PLC controller. After receiving the positioning signal, the S4 PLC controller sends an action signal to the locking mechanism, which uses the locking pin to lock the sliding mechanism in the working position. S5. After locking is completed, the PLC controller sends an action signal to the separation test mechanism, which drives the detection component to move downward and contact the clutch under test, and sends the measured data to the PLC controller. S6. After the test is completed, the PLC controller sends action signals to the separation test mechanism, locking mechanism, sliding mechanism and clamping mechanism. The separation test mechanism resets upward, the locking mechanism is unlocked, cylinder A drives the sliding mechanism to slide to the waiting position, and the clamping mechanism is released at the same time. The PLC controller determines whether the clutch under test is qualified according to the test data and gives I / O signals. At the same time, it sends a feeding signal to the robot to control the robot to feed.

[0012] As a further technical solution, in S1, a standard height block is used to confirm the zero point each time the machine is turned on; or a servo motor with an absolute encoder is used to place the standard height column for verification or calibration on the working surface of the platform, and then the difference between the mounting surface of the clutch to be tested and the working surface of the standard height column on the platform is input into the measurement and control software, and the zero point is automatically confirmed by the calibration menu of the measurement and control software.

[0013] As a further technical solution, the separation characteristics test methods in S5 include the following two: S5a, the main and secondary clutch release lever assemblies are tested separately. After the main or secondary clutch release lever assembly is tested, the electric cylinder is driven by the servo motor to rotate 30° to test the separation of the secondary or main clutch release lever assembly. S5b, the main and auxiliary clutch release lever assemblies are measured together. Using one release stroke, the release characteristics of the main and auxiliary clutch release lever assemblies are measured. The release force (main and auxiliary combined force), release stroke, and lift of the main pressure plate and auxiliary pressure plate are recorded as curves.

[0014] The beneficial effects of this invention are as follows: 1. Use photoelectric sensors to automatically identify whether there is a clutch to be tested on the positioning fixture. If there is, refuse to let the robot load the material to avoid damage to the equipment and the workpiece. 2. It adopts a magnetic cylinder and is equipped with a position switch for position determination, resulting in higher control precision; 3. The detection component is raised and lowered by an electric cylinder, and the electric cylinder and detection component are rotated by a servo motor. This allows for both simultaneous detection of the main and auxiliary clutch release lever components and separate detection, making the detection method more flexible. 4. The TR10 high-precision displacement sensor is used to eliminate the deformation of the wheel spoke load cell after being subjected to force, thereby achieving force deformation compensation, improving detection accuracy, and obtaining a true and accurate separation stroke. 5. The entire testing process is automatically controlled by a PLC controller, requiring no manual intervention and exhibiting a high degree of automation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of the present invention.

[0016] Figure 2 This is a top view of the structure of the present invention.

[0017] Figure 3 for Figure 1 A magnified view of a portion of region A in the middle.

[0018] Figure 4 This is a schematic diagram of the main structure of the large pulley in this invention.

[0019] Figure 5 This is a cross-sectional view of the large pulley in this invention.

[0020] Figure 6 This is a schematic diagram of the main structure of the large pulley mounting plate in this invention.

[0021] Figure 7 This is a cross-sectional view of the large pulley mounting plate in this invention. Figure 6 (BB cross-sectional view).

[0022] Figure 8 This is a schematic diagram of the front view of the force sensor fixing plate in this invention.

[0023] Figure 9 This is a cross-sectional view of the force sensor fixing plate in this invention.

[0024] Figure 10 This is a schematic diagram of the front view of the force sensor connecting plate in this invention.

[0025] Figure 11 This is a cross-sectional view of the force sensor connecting plate in this invention.

[0026] Figure 12 This is a schematic diagram of the main structure of the bearing fixing plate in this invention.

[0027] Figure 13 This is a cross-sectional view of the bearing fixing plate in this invention.

[0028] Figure 14 This is a schematic diagram of the signal control of the PLC controller in this invention.

[0029] Explanation of reference numerals in the attached drawings: 1. Electric cylinder spacer; 2. Large pulley; 3. Large pulley mounting plate; 4. Bearing outer spacer; 5. Bearing outer spacer mounting plate; 6. Bearing inner spacer; 7. Force sensor fixing plate; 8. Force sensor connecting plate; 9. Motor fixing plate; 10. Elevation plate; 11. Upper crossbeam; 12. Reinforcing plate; 13. Column; 14. Cylinder A connecting plate B; 15. Cylinder A connecting plate A; 16. Platform; 17. Elevation column; 18. Cylinder B fixing plate; 19. Buffer fixing. Plate 20, bearing fixing plate 21, electric cylinder 22, angular contact bearing 23, synchronous belt 24, servo motor 25, small pulley 26, copper bearing 27, wheel spoke weighing sensor 28, drag chain 29, linear bearing 30, cylinder B 31, cylinder A 32, linear guide rail 33, hydraulic buffer 34, assembly auxiliary bracket 35, potentiometer 36, positioning fixture 37, working position 39, waiting position 40, separation head fixing plate 41, separation head 42. Detailed Implementation

[0030] The present invention will now be described in detail with reference to the accompanying drawings: Example 1: As shown in the attached document Figures 1-13 As shown, an automatic testing machine for a double-acting clutch includes a base, a sliding mechanism, a separation testing mechanism, a pressing mechanism, a locking mechanism, and a control mechanism.

[0031] Reference Appendix Figure 1 A platform 16 is mounted on the base, and a positioning fixture 37 is positioned at the center of the platform 16. The positioning fixture 37 is used to place and position the clutch to be tested. Preferably, a cable chain 29 is also provided on the platform 16. Figure 1 (Left side), the bottom of the platform 16 is supported by an auxiliary bracket 35. Figure 1 (Left and right sides).

[0032] A sliding mechanism is mounted on the platform 16 and can slide between the waiting position 40 and the working position 39. Further, as... Figure 1 , 2As shown, the sliding mechanism includes an upper crossbeam 11 positioned above the platform 16. The upper crossbeam 11 is slidably mounted on linear guide rails 33 located on both sides of the platform 16 via columns 13. A reinforcing plate 12 is provided between the columns 13 and the upper crossbeam 11. A cylinder A32 is positioned outside the linear guide rails 33. The slider of cylinder A32 is connected to the columns 13 via cylinder A connecting plate A15 and cylinder A connecting plate B14, causing the columns 13 to drive the upper crossbeam 11 to slide along the linear guide rails 33. The linear guide rails 33 are preferably ultra-heavy-duty linear guide rails with stronger load-bearing capacity. A hydraulic buffer 34 is fixed to the end of the linear guide rails 33 via a buffer fixing plate 20 to provide buffering and limit the travel of the sliding mechanism (columns 13). Furthermore, a position sensor is provided on the platform 16 at a position corresponding to the working position 39. This position sensor sends a position signal to the PLC controller when the sliding mechanism moves to the working position 39.

[0033] Reference Appendix Figure 1 , 3 The separation test mechanism is set on the sliding mechanism (upper crossbeam 11). The separation test mechanism includes a drive component and a detection component. When the sliding mechanism is in the waiting position 40, the robot clamps and feeds the clutch to be tested onto the positioning fixture 37. When the sliding mechanism is in the working position 39, the drive component drives the detection component to contact the clutch to be tested downward, thereby measuring the stroke and separation force of the clutch to be tested when it separates.

[0034] Furthermore, the drive assembly includes an electric cylinder 22 and a servo motor 25. The electric cylinder 22 is supported on the upper crossbeam 11 by a support assembly. The servo motor 25 is fixed on the upper crossbeam 11 by a motor fixing plate 9 and a leveling plate 10. Simultaneously, the servo motor 25 drives a large pulley 2 via a small pulley 26 and a synchronous belt 24. The large pulley 2 drives the electric cylinder 22 to rotate relative to the support assembly. The piston rod of the electric cylinder 22 passes through the support assembly and the upper crossbeam 11 in sequence and drives the detection assembly. The detection assembly includes a force sensor fixing plate 7 fixed to the end of the piston rod. Below the force sensor fixing plate 7, a wheel spoke weighing sensor 28 and a force sensor connecting plate 8 are installed in sequence (the force sensor fixing plate 7 and the force sensor connecting plate 8 are as shown in the image). Figure 8 , 9As shown in Figures 10 and 11, the force sensor connecting plate 8 is pressed together by the separating head 42 (which can simulate a release bearing) and the separating head fixing plate 41. A potentiometer 36 is installed on the force sensor connecting plate 8, and the pointer of the potentiometer 36 rests against the force sensor fixing plate 7. Furthermore, the potentiometer 36 can detect the axial deformation of the spoke load cell 28. The software calculates and eliminates the axial deformation of the spoke load cell 28 under the corresponding force value, thus achieving displacement measurement compensation. For example, at 3000N, the axial compression deformation of the spoke load cell 28 is 0.15 mm, and the potentiometer 36 detects a displacement of 0.15 mm. At this time, the actual displacement of the electric cylinder 22 needs to be +0.15 mm. The measurement and control software compensates and corrects according to a predetermined algorithm, so that the actual displacement reaches the standard value. That is, the measurement error caused by the deformation of the spoke load cell 28 is eliminated.

[0035] like Figure 3 As shown, the support assembly includes a large pulley mounting plate 3, an outer bearing spacer 4, and an inner bearing spacer 6. An electric cylinder spacer 1 is embedded within the large pulley mounting plate 3 to support the electric cylinder 22. The upper part of the large pulley mounting plate 3 is fixedly connected to the large pulley 2 (the structure of the large pulley 2 and the large pulley mounting plate 3 is as follows). Figure 4 , 5 (As shown in Figures 6 and 7), the lower part of the large pulley mounting plate 3 is fixedly connected to the inner bearing spacer 6. The outer bearing spacer 4 is fixed to the upper crossbeam 11 by the outer bearing spacer mounting plate 5. An angular contact bearing 23 (7016A / AC) is installed between the inner bearing spacer 6 and the outer bearing spacer 4, and the angular contact bearing 23 abuts between the large pulley mounting plate 3 and the outer bearing spacer mounting plate 5. The piston rod of the electric cylinder 22 passes through the upper crossbeam 11 and is supported by a copper bearing 27. The copper bearing 27 is fixed to the lower part of the upper crossbeam 11 by a bearing fixing plate 21. The structure of the bearing fixing plate 21 is as follows: Figure 12 , 13 As shown.

[0036] The clamping mechanism is mounted on the platform 16 and can clamp the clutch under test onto the positioning fixture 37. Furthermore, the clamping mechanism uses a magnetic cylinder, and two magnetic proximity sensors are axially spaced on the outer wall of the cylinder barrel. One magnetic proximity sensor corresponds to the locking position of the magnetic cylinder, and the other corresponds to the releasing position. The magnetic proximity sensors can detect the piston position of the magnetic cylinder (i.e., whether it is in the locking or releasing position) and feed it back to the PLC controller. After receiving the locking / releasing signal from the clamping mechanism (magnetic cylinder), the PLC controller continues to execute the next operation.

[0037] The locking mechanism is located on both sides of the platform 16 and close to the working position 39, and can lock the sliding mechanism in the working position 39. Furthermore, as... Figure 1 , 2As shown, the locking mechanism includes a cylinder B31 and a locking pin 19. The cylinder B31 is mounted on a cylinder B fixing plate 18. The cylinder B fixing plate 18 is fixed to the platform 16 on both sides by equal-height columns 17. The locking pin 19 is connected and driven by the cylinder B31, and can pass through the linear bearing 30 mounted on the platform 16 and extend from the platform 16, thereby contacting and abutting the column 13 of the sliding mechanism, and fixing and locking the column 13.

[0038] The control mechanism includes a PLC controller and photoelectric sensors that communicate with the PLC controller. The photoelectric sensors determine whether the clutch to be tested is on the positioning fixture 37 and send a material presence / absence signal to the PLC controller. The PLC controller communicates with the robot and also controls the sliding mechanism, separation testing mechanism, clamping mechanism, and locking mechanism via signals. (See attached diagram.) Figure 14 .

[0039] Example 2: Refer to Appendix Figure 1 , 2 3, 14 Figure 2 In reality, only one set of large pulley 2 (electric cylinder 22) and servo motor 25 exist. In the diagram, the dashed line indicates the sliding mechanism is in the waiting position 40, and the solid line indicates the sliding mechanism is in the working position 39. An automatic detection method for a double-acting clutch, using the automatic detection machine for a double-acting clutch in Example 1, includes the following steps: S1. When the test begins, the sliding mechanism is in the waiting position 40. First, the photoelectric sensor determines whether there is a clutch to be tested on the positioning fixture 37. Only when there is no clutch to be tested on the positioning fixture 37, the photoelectric sensor sends a no-material signal to the PLC controller. After receiving the no-material signal, the PLC controller sends a feeding signal to the robot and controls the robot to feed the material. If there is a clutch to be tested on the positioning fixture 37, the photoelectric sensor sends a material signal to the PLC controller, and the PLC controller refuses to feed the material to the robot.

[0040] S2. After the material is loaded, the robot sends the loading completion signal to the PLC controller. The PLC controller sends an action signal to the clamping mechanism, which clamps the clutch to be tested onto the positioning fixture 37. S3. After the clamping is completed, the PLC controller sends an action signal to the sliding mechanism. The cylinder A32 drives the sliding mechanism to slide to the working position 39, and the position sensor sends a position signal to the PLC controller. After receiving the positioning signal, the S4 PLC controller sends an action signal to the locking mechanism, which uses the locking pin 19 to lock the sliding mechanism in the working position 39. S5. After locking is completed, the PLC controller sends an action signal to the separation test mechanism, which drives the detection component to move downward and contact the clutch under test, and sends the measured data to the PLC controller. S6. After the test is completed, the PLC controller sends action signals to the separation test mechanism, locking mechanism, sliding mechanism and pressing mechanism. The separation test mechanism resets upward, the locking mechanism is unlocked, cylinder A32 drives the sliding mechanism to slide to the waiting position 40, and the pressing mechanism is released at the same time. The PLC controller determines whether the clutch under test is qualified according to the test data and gives I / O signal. At the same time, it sends a feeding signal to the robot to control the robot to feed.

[0041] Furthermore, in step S1, the zero point is confirmed each time the machine is powered on using a standard height block. The zero point confirmation steps are as follows: Place the standard height block for verification or calibration flat on the working surface of the platform 16 (or tooling), then input the difference between the mounting surface of the clutch to be tested and the working surface of the standard height block placed on the platform 16 (or tooling) into the measurement and control software (which can be directly measured using a depth gauge), and automatically complete the zero point confirmation using the calibration menu of the measurement and control software. Alternatively, a servo motor 25 with an absolute encoder can be used. The preferred model of this servo motor 25 is SGM7G18ACA61, and the lead of the electric cylinder 22 is preferably 5mm. Under normal operating conditions, the servo controller of the servo motor 25 will store the current position information, eliminating the need for zero point calibration each time the machine is powered on. However, data loss due to long-term disuse of the equipment or servo controller battery degradation, or abnormal issues such as manual pushing and pulling, cannot be ruled out. In general, zero point calibration upon power-on is still recommended, as the measurement and control software has a one-key reset function.

[0042] Furthermore, in step S5, the testing methods for separation characteristics include the following two types: S5a, the main and secondary clutch release lever assemblies are tested separately. After the main or secondary clutch release lever assembly is tested, the servo motor 25 drives the electric cylinder 22 to rotate 30° to test the separation of the secondary or main clutch release lever assembly. S5b, the main and auxiliary clutch release lever assemblies are measured together. Using one release stroke, the release characteristics of the main and auxiliary clutch release lever assemblies are measured. The release force (main and auxiliary combined force), release stroke, and lift of the main pressure plate and auxiliary pressure plate are recorded as curves.

[0043] It is understood that, for those skilled in the art, any equivalent substitutions or modifications to the technical solutions and inventive concepts of this invention should fall within the scope of protection of the appended claims.

Claims

1. An automatic testing machine for a double-acting clutch, characterized in that, include: A base is provided on which a platform (16) is provided, and a positioning fixture (37) is provided at the center of the platform (16) for placing and positioning the clutch to be tested; A sliding mechanism is provided on the platform (16) for sliding between the waiting position (40) and the working position (39); A separation test mechanism is set on the sliding mechanism. The separation test mechanism includes a drive component and a detection component. When the sliding mechanism is in the waiting position (40), the robot clamps and feeds the clutch to be tested onto the positioning fixture (37). When the sliding mechanism is in the working position (39), the drive component drives the detection component to contact the clutch to be tested downward, thereby measuring the stroke and separation force of the clutch to be tested when it separates. A clamping mechanism is set on the platform (16) and is used to clamp the clutch to be tested onto the positioning fixture (37); A locking mechanism, disposed on the platform (16) and near the working position (39), is used to lock the sliding mechanism in the working position (39); and The control mechanism includes a PLC controller and a photoelectric sensor that is connected to the PLC controller. The photoelectric sensor is used to determine whether there is a clutch to be tested on the positioning fixture (37) and sends a material presence or absence signal to the PLC controller. The PLC controller is connected to the robot. At the same time, the PLC controller also controls the sliding mechanism, the separation test mechanism, the clamping mechanism and the locking mechanism to operate through signals.

2. The automatic testing machine for a double-acting clutch according to claim 1, characterized in that: The sliding mechanism includes an upper crossbeam (11) set above the platform (16). The upper crossbeam (11) is slidably mounted on linear guide rails (33) on both sides of the platform (16) via columns (13). A cylinder A (32) is set on the outside of the linear guide rails (33). The slider of the cylinder A (32) drives the column (13) to slide the upper crossbeam (11) along the linear guide rails (33). A position sensor is provided at the working position (39) to send a position signal to the PLC controller when the sliding mechanism moves to the working position (39).

3. The automatic testing machine for a double-acting clutch according to claim 3, characterized in that: The end of the linear guide (33) is fixed with a hydraulic buffer (34) via a buffer fixing plate (20) to limit the travel of the column (13).

4. The automatic testing machine for a double-acting clutch according to claim 2, characterized in that: The drive assembly includes an electric cylinder (22) and a servo motor (25). The electric cylinder (22) is supported on the upper crossbeam (11) by a support assembly. The servo motor (25) is fixed on the upper crossbeam (11) and connected to the large pulley (2) via a small pulley (26) and a synchronous belt (24). The large pulley (2) drives the electric cylinder (22) to rotate relative to the support assembly. The piston rod of the electric cylinder (22) passes through the support assembly and the upper crossbeam (11) in sequence and drives the detection assembly. The detection assembly includes a fixed... The force sensor fixing plate (7) at the end of the piston rod is used to install a wheel spoke weighing sensor (28) and a force sensor connecting plate (8) in sequence below the force sensor fixing plate (7). The force sensor connecting plate (8) is pressed by a separating head (42) and a separating head fixing plate (41). A potentiometer (36) is installed on the force sensor connecting plate (8). The pointer of the potentiometer (36) touches the force sensor fixing plate (7). The potentiometer (36) is used to detect the axial deformation of the wheel spoke weighing sensor (28) to realize displacement measurement compensation.

5. The automatic testing machine for a double-acting clutch according to claim 4, characterized in that: The support assembly includes a large pulley mounting plate (3), an outer bearing spacer (4), and an inner bearing spacer (6). The large pulley mounting plate (3) is embedded with an electric cylinder spacer (1) to support the electric cylinder (22). The upper part of the large pulley mounting plate (3) is fixedly connected to the large pulley (2), and the lower part of the large pulley mounting plate (3) is fixedly connected to the inner bearing spacer (6). The outer bearing spacer (4) is fixed to the upper crossbeam (11) through the outer bearing spacer mounting plate (5), and an angular contact bearing (23) is installed between the inner bearing spacer (6) and the outer bearing spacer (4).

6. The automatic testing machine for a double-acting clutch according to claim 1, characterized in that: The clamping mechanism uses a magnetic cylinder, and two magnetic proximity sensors are axially spaced on the outer wall of the cylinder barrel, corresponding to the locking working position and the loosening reset position of the magnetic cylinder, respectively. The magnetic proximity sensors are used to detect the piston's position and feed back to the PLC controller.

7. The automatic testing machine for a double-acting clutch according to claim 1, characterized in that: The locking mechanism includes a cylinder B (31) and a locking pin (19). The cylinder B (31) is mounted on a cylinder B fixing plate (18). The cylinder B fixing plate (18) is fixed to the platform (16) on both sides by equal-height columns (17). The locking pin (19) is connected and driven by the cylinder B (31) to pass through the linear bearing (30) mounted on the platform (16) and extend from the platform (16) to contact and abut against the column (13) of the sliding mechanism, thereby fixing and locking the column (13).

8. An automatic testing method for a double-acting clutch, employing an automatic testing machine for a double-acting clutch as described in any one of claims 1 to 7, characterized in that, Includes the following steps: S1. When the test begins, the sliding mechanism is in the waiting position (40). First, the photoelectric sensor determines whether there is a clutch to be tested on the positioning fixture (37). Only when there is no clutch to be tested on the positioning fixture (37) will the photoelectric sensor send the no-material signal to the PLC controller. After receiving the no-material signal, the PLC controller sends a feeding signal to the robot and controls the robot to feed the material. S2. After the material is loaded, the robot sends the loading completion signal to the PLC controller. The PLC controller sends an action signal to the clamping mechanism, which clamps the clutch to be tested onto the positioning fixture (37). S3. After the pressing is completed, the PLC controller sends an action signal to the sliding mechanism. The cylinder A (32) drives the sliding mechanism to slide to the working position (39), and the position sensor sends a position signal to the PLC controller. S4. After receiving the position signal, the PLC controller sends an action signal to the locking mechanism and uses the locking pin (19) to lock the sliding mechanism in the working position (39). S5. After locking is completed, the PLC controller sends an action signal to the separation test mechanism, which drives the detection component to move downward and contact the clutch under test, and sends the measured data to the PLC controller. S6. After the test is completed, the PLC controller sends action signals to the separation test mechanism, locking mechanism, sliding mechanism and pressing mechanism. The separation test mechanism is reset upward, the locking mechanism is unlocked, cylinder A (32) drives the sliding mechanism to slide to the waiting position (40), and the pressing mechanism is released at the same time. The PLC controller judges whether the clutch under test is qualified according to the test data and gives I / O signal. At the same time, it sends a feeding signal to the robot to control the robot to feed.

9. The automatic detection method for a double-acting clutch according to claim 8, characterized in that: In S1, the zero point is confirmed each time the machine is turned on using a standard height block. The standard height block for verification or calibration is placed flat on the working surface of the platform (16). Then, the difference between the mounting surface of the clutch to be tested and the working surface of the standard height block placed flat on the platform (16) is input in the measurement and control software, and the zero point is automatically confirmed using the calibration menu of the measurement and control software.

10. The automatic detection method for a double-acting clutch according to claim 8, characterized in that, In S5, the testing methods for separation characteristics include the following two types: S5a, the main and secondary clutch release rod assemblies are tested separately. After the main or secondary clutch release rod assembly is tested, the electric cylinder (22) is driven by the servo motor (25) to rotate 30° to test the separation of the secondary or main clutch release rod assembly. S5b, the main and auxiliary clutch release lever assemblies are measured together. Using one release stroke, the release characteristics of the main and auxiliary clutch release lever assemblies are measured. The release force (main and auxiliary combined force), release stroke, and lift of the main pressure plate and auxiliary pressure plate are recorded as curves.

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