An integrated AMT offline testing method and system

Abstract

The present invention discloses an integrated AMT offline testing method and system, which belongs to the field of transmission detection. The method and system successively perform automated detections such as program flashing, running-in and flushing, pre-inspection, bench loading test and pressure holding test on the transmission, perform special inspections at multiple workstations respectively, and perform secondary verification to prevent the outflow of transmission faulty parts and ensure the accuracy of the test results.

Description

Technical Field

[0001] The present invention belongs to the field of transmission detection, and in particular relates to an integrated AMT off-line testing method and system. Background Art

[0002] Integrated AMT is crucial to the future survival and development of many companies. The quality of the assembly before leaving the factory directly determines whether the product can withstand the test of the market. Off-line testing, as the last inspection checkpoint before the assembly leaves the factory, plays an important role.

[0003] Traditional MT testing only needs to check whether the mechanical part is qualified, but AMT has an additional control unit compared to traditional transmissions, and every function of the control unit needs to be tested. AMT does not require manual shifting, and the off-line test must adopt a fully automatic testing process. All 0-kilometer faults must be detected here, which is much more difficult than MT.

[0004] Compared with traditional MT, the functions and parts of integrated AMT are more complex, and the testing of integrated AMT is fully automatic. The existing detection method uses manual inspection throughout the process, which only includes the program flashing process. In other words, the inspection is only performed at one workstation, which makes it impossible to guarantee 100% fault detection. Summary of the invention

[0005] In order to solve the technical problem that the existing off-line testing method cannot detect 100% of the integrated AMT 0 km faults, the present invention provides an integrated AMT off-line testing method and system. By adopting the method and system and utilizing multiple workstations to collaboratively complete the detection, 100% detection of the AMT assembly 0 km faults can be guaranteed.

[0006] In order to achieve the above object, the present invention adopts the following technical contents:

[0007] An integrated AMT offline testing method comprises the following steps:

[0008] Connect the assembled transmission to the pallet, move the transmission to the program flashing station and flash the program; move the transmission to the running-in and flushing station and perform running-in and flushing, and pre-check the transmission power take-off and odometer sensor functions; move the transmission to the loading test station for bench loading test; move the transmission to the clutch actuator test station and perform a pressure holding test; drain the transmission and complete the off-line test.

[0009] Furthermore, the specific steps of program flashing are as follows:

[0010] Communicate with the transmission through the standard electrical interface of the tray and download the corresponding program flashing package according to the transmission model. After flashing the program flashing package to the transmission TCU, verify the program flashed by the transmission TCU and bind the flashing information;

[0011] Among them, the program verification after the transmission TCU is flashed includes the verification of program integrity and program accuracy.

[0012] Furthermore, before the program is flashed, the program flashing package is downloaded in real time.

[0013] Further, the specific steps of the running-in flushing are as follows:

[0014] The transmission automatically shifts into gear, oil is filled into the transmission and circulating flushing begins until the burrs on the transmission parts are cleaned and the flushing ends.

[0015] Furthermore, the specific steps of the bench loading test are as follows:

[0016] Call the loading test program according to the tray information and check the speed change, then perform clutch valve test, transmission self-learning, intermediate shaft brake test, transmission front auxiliary box function test, gear shifting and speed ratio test, self-learning parameter check, clutch parameter reset and transmission parameter calibration;

[0017] When calibrating the transmission parameters, the corresponding calibration file is downloaded in real time.

[0018] Furthermore, the specific steps of the pressure holding test are as follows:

[0019] Automatically clamp the transmission, perform pressure holding test, read and record the test results.

[0020] Furthermore, the test duration of the pressure holding test is 5 minutes.

[0021] An integrated AMT offline test system, used to implement the steps of the integrated AMT offline test method mentioned in the claim, characterized in that it includes:

[0022] A mounting system for connecting the fully assembled transmission to the pallet;

[0023] A program flashing system, used to move the transmission to a program flashing station and perform program flashing;

[0024] The running-in flushing system is used to move the transmission to the running-in flushing station and perform a running-in flushing, and to pre-check the transmission power take-off and odometer sensor functions;

[0025] The bench loading test system is used to move the transmission to the loading test station for bench loading test;

[0026] Pressure holding test system, used to move the transmission to the clutch actuator test station and perform pressure holding test;

[0027] Oil drain system, used for transmission oil drain.

[0028] Furthermore, it also includes a real-time monitoring system for monitoring test data, uploading test data, and analyzing test data in real time.

[0029] Furthermore, the bench loading test system includes a noise and vibration test system, which is used for real-time detection and recording of the transmission vibration state and conversion of the transmission vibration into sound during the bench loading test.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] The present invention provides an integrated AMT offline testing method, which performs automated tests such as program flashing, running-in and flushing, pre-inspection, bench loading test and pressure holding test on the transmission in sequence, performs special tests at multiple workstations respectively, and performs secondary verification to prevent the outflow of faulty parts of the transmission, thereby not only ensuring the production rhythm, but also mutual inspection of the test contents between the workstations to ensure the accuracy of the test results.

[0032] Preferably, the present invention downloads the program flashing package in real time before program flashing to keep consistent with the latest design status, thereby ensuring the accuracy of program flashing and further improving the accuracy of fully automatic testing.

[0033] Preferably, the running-in flushing process of the present invention is not stopped until the burrs on the transmission parts are cleaned up, which can ensure the accuracy of the loading test and further improve the accuracy of the entire test process.

[0034] Preferably, when calibrating the transmission parameters, the present invention downloads the corresponding calibration files in real time to keep consistent with the latest design status, which can ensure the accuracy of the calibration parameters and further improve the accuracy of the fully automatic test.

[0035] The present invention also provides an integrated AMT off-line test system, which can implement the steps of the above-mentioned integrated AMT off-line test method. Through the joint cooperation of the installation system, the program flashing system, the running-in and flushing system, the bench loading test system, the pressure holding test system and the oil draining system, the problem of being unable to detect 100% of the 0-kilometer faults of the AMT assembly due to the complex functions and parts of the AMT and the full-automatic testing is effectively solved. The system can achieve 100% detection of the 0-kilometer faults of the AMT assembly.

[0036] Preferably, the system also includes a real-time monitoring system that can monitor test data, upload test data to test process data, and analyze test data in real time during the running-in flushing, bench loading test, and pressure holding test to ensure real-time detection of faults.

[0037] Preferably, the bench loading test system of the present invention includes a noise and vibration test system. The noise and vibration test system can detect and record the vibration state of the transmission in real time and convert the transmission vibration into sound during the bench loading test. The operator can listen to the entire test process of the transmission again through the converted sound, thereby performing multiple tests and corrections. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A flowchart of an integrated AMT offline testing method provided by the present invention;

[0039] Figure 2 A flow chart of an integrated AMT offline testing method provided by an embodiment of the present invention;

[0040] Figure 3 A schematic diagram of an integrated AMT offline test system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0041] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail in the following specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0042] like Figure 1 As shown, the present invention provides an integrated AMT offline testing method, comprising the following steps:

[0043] Connect the assembled transmission to the pallet, move the transmission to the program flashing station and flash the program; move the transmission to the running-in and flushing station and perform running-in and flushing, and pre-check the transmission power take-off and odometer sensor functions; move the transmission to the loading test station for bench loading test; move the transmission to the clutch actuator test station and perform a pressure holding test; drain the transmission and complete the off-line test.

[0044] The specific steps for program flashing are as follows:

[0045] Communicate with the transmission through the standard electrical interface of the tray and download the corresponding program flashing package according to the transmission model. After flashing the program flashing package to the transmission TCU, verify the program flashed by the transmission TCU and bind the flashing information;

[0046] Among them, the program verification after the transmission TCU is flashed includes the verification of program integrity and program accuracy; before the program is flashed, the program flashing package is downloaded in real time.

[0047] Among them, the specific steps of running-in and flushing are as follows:

[0048] The transmission automatically shifts into gear, oil is filled into the transmission and circulating flushing begins until the burrs on the transmission parts are cleaned and the flushing ends.

[0049] Among them, the specific steps of the bench loading test are as follows:

[0050] Call the loading test program according to the tray information and check the speed change, then perform clutch valve test, transmission self-learning, intermediate shaft brake test, transmission front auxiliary box function test, gear shifting and speed ratio test, self-learning parameter check, clutch parameter reset and transmission parameter calibration;

[0051] When calibrating the transmission parameters, the corresponding calibration file is downloaded in real time.

[0052] Among them, the specific steps of the pressure holding test are as follows:

[0053] Automatically clamp the transmission, perform a pressure test, and read and record the test results; the pressure test lasts for 5 minutes.

[0054] The present invention also provides an integrated AMT offline test system, which is used to implement the steps of the above-mentioned integrated AMT offline test method, including:

[0055] Installation system, used to connect the assembled transmission to the pallet. Program flashing system, used to move the transmission to the program flashing station and perform program flashing. Running-in flushing system, used to move the transmission to the running-in flushing station and perform running-in flushing, and pre-check the transmission pre-check power take-off and odometer sensor functions. Bench loading test system, used to move the transmission to the loading test station for bench loading test. Pressure holding test system, used to move the transmission to the clutch actuator test station and perform pressure holding test. Oil draining system, used to drain the transmission.

[0056] In particular, it also includes a real-time monitoring system for monitoring test data, uploading test data, and analyzing test data in real time.

[0057] Wherein, the bench loading test system includes a noise and vibration test system, and the noise and vibration test system is used for real-time detection and recording of the transmission vibration state and conversion of the transmission vibration into sound during the bench loading test.

[0058] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments:

[0059] Example

[0060] This embodiment provides an integrated AMT offline test method, which is based on the following test principles:

[0061] Analyze the possible faults of each transmission (integrated AMT) functional module, and formulate the test principles based on the repair and after-sales data:

[0062] (1) For faults with a high probability of occurrence, 100% special inspection is required, and a self-inspection plus a mutual inspection mode of workstations should be considered to ensure that faulty products do not leave the factory. For example, the correctness of program flashing needs to be verified not only at the program flashing station, but also at the load test station.

[0063] (2) For occasional faults, 100% special inspection is carried out, usually only in one test station, such as self-learning fault, intermediate shaft brake fault, etc.;

[0064] (3) For faults with extremely low probability of occurrence or that are impossible to occur, only data records need to be made without affecting the cycle time. When reviewing the data, process personnel should pay attention to the data trend and decide whether to conduct special inspections in the future.

[0065] This embodiment provides an integrated AMT offline testing method, and the specific steps include:

[0066] S1. The transmission is assembled and the operator connects the transmission to the electrical / gas / oil interface of the pallet.

[0067] S2. The production line transfers the pallet and transmission to the program flashing station. The program flashing station equipment communicates with the transmission through the standard electrical interface of the pallet, and downloads the corresponding flashing program in real time according to the transmission model, which is consistent with the latest design status, ensuring the accuracy of the program flashing, thereby improving the accuracy of the fully automatic test; the downloaded flashing program is flashed to the transmission TCU (automatic transmission control unit), and the data is uploaded and released after verification.

[0068] Program flashing is not performed on the test bench (loading test station), but is performed at an independent program flashing station. After flashing, the program integrity and whether the flashed program is correct are verified. The loading test station will perform a second verification of the test results.

[0069] S3. The transmission and pallet arrive at the running-in and flushing station. The transmission is automatically engaged and then flushed. The power take-off and odometer sensor functions of the transmission are pre-checked. After completion, the pre-check test data is uploaded and released.

[0070] The running-in flushing process will not be stopped until the burrs on the transmission parts are cleaned up, which can ensure the accuracy of the loading test and thus improve the accuracy of the entire testing process.

[0071] S4. The transmission and pallet arrive at the loading test station, the loading test bench automatically clamps the transmission, and the corresponding loading test program is called through the pallet information. The test is carried out according to the process of program verification → clutch valve test → self-learning → TB (intermediate shaft brake) test → transmission front auxiliary box function test → gear shifting and speed ratio test → self-learning parameter check → clutch parameter reset → transmission parameter calibration (MES system stores parameter data), and the process data issued by the information system is used to self-check whether the parameter data is qualified. If qualified, the test data and test results are uploaded after the test; if unqualified, repeat this step. According to the above-mentioned specific process sequence of the loading test, the best test effect and the best beat can be guaranteed.

[0072] Among them, when calibrating the transmission parameters, the corresponding calibration files are downloaded in real time, which can ensure the accuracy of the calibration parameters and thus improve the accuracy of the fully automatic test.

[0073] Step S4 is implemented based on the bench loading test system, which includes a noise and vibration test system (NVH system). During the bench loading test, the noise and vibration test system can detect and record the vibration state of the transmission in real time and convert the transmission vibration into sound. The operator can listen to the entire test process of the transmission again through the converted sound, thereby performing multiple inspections and proofreading to ensure the accuracy of the fully automatic test.

[0074] S5. The transmission and pallet arrive at the clutch actuator test station, automatically clamp the transmission and start testing, read, record and upload the test results, and release the transmission.

[0075] Among them, the pressure holding test time of the clutch actuator is as long as 5 minutes, so an independent clutch actuator test station is used for testing. Because the failure rate of this module is much lower than the loading test failure rate, this step is performed after the bench loading test.

[0076] S6. The transmission automatically drains oil and completes the offline test.

[0077] In order to ensure the accuracy of fully automatic testing, the predetermined test data range is issued in real time by the production information system to monitor whether there is any deviation in the test process data.

[0078] In addition, the test data and test results are uploaded to the information system for real-time monitoring of the test results. Based on the test results, operators will adjust the testing equipment on site.

[0079] After completing the offline test, the integrated AMT product will be offline.

[0080] The present embodiment also provides an integrated AMT off-line test system, which can implement the steps of the above-mentioned integrated AMT off-line test method. Through the joint cooperation of the installation system, the program flashing system, the running-in and flushing system, the bench loading test system and the pressure holding test system, the problem of being unable to detect 100% of the AMT assembly 0 km faults due to the complex functions and parts of the AMT and the full-automatic testing is effectively solved. The present system can achieve 100% detection of the AMT assembly 0 km faults.

[0081] The above embodiment is only one of the implementation methods that can realize the technical solution of the present invention. The scope of protection claimed by the present invention is not limited only to this embodiment, but also includes changes, replacements and other implementation methods that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the present invention.

Claims

1. An integrated AMT offline testing method, characterized in that: The following steps are involved: Connect the assembled transmission to the pallet, move the transmission to the program flashing station and perform program flashing; move the transmission to the running-in and flushing station and perform running-in and flushing, and pre-check the transmission power take-off and odometer sensor functions; move the transmission to the loading test station and perform bench loading test; move the transmission to the clutch actuator test station and perform pressure holding test; drain the transmission and complete the offline test; The specific steps for program flashing are as follows: Communicate with the transmission through the standard electrical interface of the tray and download the corresponding program flashing package according to the transmission model. After flashing the program flashing package to the transmission TCU, verify the program flashed by the transmission TCU and bind the flashing information; Among them, the program verification after the transmission TCU is flashed includes the verification of program integrity and program accuracy; The specific steps of running-in flushing are as follows: The transmission automatically shifts into gear, oil is added to the transmission and circulating flushing begins until the burrs on the transmission parts are cleaned and the flushing ends; The specific steps of the bench loading test are as follows: Call the loading test program according to the tray information and check the speed change, then perform clutch valve test, transmission self-learning, intermediate shaft brake test, transmission front auxiliary box function test, gear shifting and speed ratio test, self-learning parameter check, clutch parameter reset and transmission parameter calibration; When calibrating the transmission parameters, the corresponding calibration file is downloaded in real time.

2. The integrated AMT offline testing method according to claim 1, characterized in that: Before program flashing, download the program flashing package in real time.

3. The integrated AMT offline testing method according to claim 1, characterized in that: The specific steps of the pressure holding test are as follows: Automatically clamp the transmission, perform pressure holding test, read and record the test results.

4. The integrated AMT offline testing method according to claim 1, characterized in that: The test duration of the pressure holding test is 5 minutes.

5. An integrated AMT offline test system, used to implement the steps of an integrated AMT offline test method according to any one of claims 1 to 4, characterized in that: include: A mounting system for connecting the fully assembled transmission to the pallet; A program flashing system, used to move the transmission to a program flashing station and perform program flashing; The running-in flushing system is used to move the transmission to the running-in flushing station and perform a running-in flushing, and to pre-check the transmission power take-off and odometer sensor functions; The bench loading test system is used to move the transmission to the loading test station for bench loading test; Pressure holding test system, used to move the transmission to the clutch actuator test station and perform pressure holding test; Oil drain system, used for transmission oil drain.

6. The integrated AMT offline test system according to claim 5, characterized in that: It also includes a real-time monitoring system for monitoring test data, uploading test data, and analyzing test data in real time.

7. The integrated AMT offline test system according to claim 6, characterized in that: The bench loading test system comprises a noise vibration test system, which is used for real-time detection and recording of the transmission vibration state and conversion of the transmission vibration into sound during the bench loading test.

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