NVH test board for planetary reducer

Abstract

The utility model relates to the related technical field of automobile part detection, in particular to a planetary reducer NVH test board which comprises a load lifting butt joint electric cylinder, a working platform is fixedly connected to the lower surface of the load lifting butt joint electric cylinder, and a workpiece positioning device is installed on the upper surface of the working platform. And a spline butt joint is mounted on the upper surface of the workpiece positioning part. According to the planetary reducer NVH test bench, in a no-load state or a load state, after spline butt joint OK detection, positioning is carried out through workpiece positioning, then product pressing is carried out, then a test motor is started to drive a torque transmission gear to rotate, a torque sensor collects a no-load starting torque and uploads the torque to an MES system, and a test result is obtained. Hole alignment lifting cylinders on the two sides of the loading test mechanism ascend at the same time, workpiece hole alignment, load lifting butt joint electric cylinder extension and torque transmission gear clearance are completed, forward rotation is conducted to the left limit firstly, then reverse rotation is conducted to the right limit, and the second-time rotation angle is recorded as a gear set clearance encoder to collect data and upload the data to an MES system.

Description

Technical Field

[0001] The utility model relates to the technical field related to automobile parts detection, in particular to a planetary reducer NVH test bench. Background Art

[0002] Auto parts are the various units that make up the whole car and a kind of product that serves the car, including cylinder heads, engine bodies, oil pans, etc., among which planetary reducers are also a kind of auto parts. Auto parts need to be tested after production. The driving field of the car uses micro planetary reducers as reduction drive equipment, such as in electronic parking systems, car headlight adjusters, rearview mirror adjustments, sunroof adjustments, tailgate push rod motor gearboxes, wiper motors, car seat adjustments, safety headrest protection adjustments, automatic steering wheel adjustment gearboxes, etc. The planetary reducers also need to be tested after production. Therefore, a planetary reducer NVH test bench is particularly needed.

[0003] However, the existing planetary reducer NVH test bench cannot fully record the parameters of the reducer when it is running under different working conditions, which may lead to inaccurate test results. Once this motor is produced and installed on a car, the quality of the car cannot be guaranteed. Utility Model Content

[0004] The purpose of the utility model is to provide a planetary reducer NVH test bench to solve the problem that the existing planetary reducer NVH test bench mentioned in the above background technology cannot completely record the parameters of the reducer when it is running under different working conditions, which may result in low accuracy of the test results. Once this motor is produced and installed on a car, the quality of the car cannot be guaranteed.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a planetary reducer NVH test bench, comprising a load-lifting and docking electric cylinder, the lower surface of which is fixedly connected to a working platform, the upper surface of which is equipped with a workpiece positioning device, and the upper surface of which is equipped with a spline docking device.

[0006] Preferably, a spline docking OK detection is installed on the upper surface of the working platform, a product press is installed on the upper surface of the working platform, a torque transmission gear is installed on the upper surface of the working platform, and a hole lifting cylinder is fixedly connected to the lower surface of the working platform.

[0007] Preferably, an output end encoder is fixedly connected to the lower surface of the working platform, a ball spline is fixedly connected to the lower surface of the output end encoder, a torque sensor is installed on the lower surface of the ball spline, and a magnetic powder brake is installed on one side surface of the torque sensor.

[0008] Preferably, an input end encoder is installed on the lower surface of the working platform, a starting torque detection torque sensor is installed on the lower surface of the input end encoder, a test motor is installed on the lower surface of the starting torque detection torque sensor, a spline docking electric cylinder is installed on the lower surface of the working platform, and a noise recorder is installed on the upper surface of the working platform.

[0009] Preferably, the workpiece positioning is connected to the load lifting docking electric cylinder through the working platform, and the spline docking is connected to the load lifting docking electric cylinder through the working platform.

[0010] Preferably, the spline docking OK detection is connected with the spline docking through a working platform.

[0011] Preferably, the test motor is connected to the input end encoder via a starting torque detection torque sensor, and the spline docking electric cylinder is connected to the spline docking via a working platform.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the planetary reducer NVH test bench, through the settings of load lifting docking electric cylinder, work platform, workpiece positioning, spline docking, spline docking OK detection, product pressing, torque transmission gear, hole lifting cylinder, output end encoder, ball spline, torque sensor, magnetic powder brake, input end encoder, starting torque detection torque sensor, test motor, spline docking electric cylinder, and noise recorder, during the test, under no-load state or load state, after the spline docking OK detection, it is positioned by workpiece positioning, then the product is pressed, and then the test motor is started to drive the torque transmission gear to rotate. At this time, the torque at startup can be observed through the starting torque detection torque sensor, and then the force The torque is transmitted to the magnetic powder brake on the right through the torque transmission gear. The torque sensor collects the no-load starting torque and uploads it to the MES system. The hole-matching lifting cylinders on both sides of the loading test mechanism rise at the same time, and the workpiece hole matching is completed. The load-lifting docking electric cylinder extends out, and the torque transmission gear gap first rotates forward to the left limit and then reverses to the right limit. The second rotation angle is recorded as the gear group gap encoder to collect data and upload it to the MES system. The hole-matching lifting cylinder retracts, and the noise recorder collects data and uploads it to the MES system. The input encoder and the output encoder values ​​are collected. The equipment uses a magnetic powder brake, and the HBM encoder is used to calculate the gear group angle and reduction ratio. The torque sensor is used to collect the starting torque, and the noise recorder is used to collect the noise level. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall appearance structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the workpiece positioning and torque transmission gears used in conjunction with the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the load lifting docking electric cylinder and the torque transmission gear used in conjunction with the utility model;

[0016] Figure 4 It is a schematic diagram of the structure of the spline docking and product compression matching of the utility model.

[0017] In the figure: 1. Load lifting and docking electric cylinder; 2. Working platform; 3. Workpiece positioning; 4. Spline docking; 5. Spline docking OK detection; 6. Product pressing; 7. Torque transmission gear; 8. Hole lifting cylinder; 9. Output end encoder; 10. Ball spline; 11. Torque sensor; 12. Magnetic powder brake; 13. Input end encoder; 14. Starting torque detection torque sensor; 15. Test motor; 16. Spline docking electric cylinder; 17. Noise recorder. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-4 The utility model provides a technical solution: a planetary reducer NVH test bench, including a load lifting and docking electric cylinder 1, a working platform 2 is fixedly connected to the lower surface of the load lifting and docking electric cylinder 1, a workpiece positioning 3 is installed on the upper surface of the working platform 2, and a spline docking 4 is installed on the upper surface of the workpiece positioning 3.

[0020] Furthermore, a spline docking OK detection 5 is installed on the upper surface of the working platform 2, a product pressing 6 is installed on the upper surface of the working platform 2, a torque transmission gear 7 is installed on the upper surface of the working platform 2, and a hole lifting cylinder 8 is fixedly connected to the lower surface of the working platform 2.

[0021] Furthermore, an output end encoder 9 is fixedly connected to the lower surface of the working platform 2, a ball spline 10 is fixedly connected to the lower surface of the output end encoder 9, a torque sensor 11 is installed on the lower surface of the ball spline 10, and a magnetic powder brake 12 is installed on one side surface of the torque sensor 11.

[0022] Furthermore, an input end encoder 13 is installed on the lower surface of the working platform 2, a starting torque detection torque sensor 14 is installed on the lower surface of the input end encoder 13, a test motor 15 is installed on the lower surface of the starting torque detection torque sensor 14, a spline docking electric cylinder 16 is installed on the lower surface of the working platform 2, and a noise recorder 17 is installed on the upper surface of the working platform 2.

[0023] Furthermore, the workpiece positioning 3 is connected to the load lifting docking electric cylinder 1 through the working platform 2, and the spline docking 4 is connected to the load lifting docking electric cylinder 1 through the working platform 2.

[0024] Further, the spline docking OK detection 5 is connected to the spline docking 4 through the working platform 2.

[0025] Furthermore, the test motor 15 is connected to the input end encoder 13 via the starting torque detection torque sensor 14 , and the spline docking electric cylinder 16 is connected to the spline docking 4 via the working platform 2 .

[0026] Working principle: During the test, in the no-load state or the loaded state, after the spline docking OK detection 5, it is positioned through the workpiece positioning 3, and then it is pressed by the product pressing 6, and then the test motor 16 is started to drive the torque transfer gear 7 to rotate. At this time, the torque at the start can be observed through the starting torque detection torque sensor 14, and then the force is transmitted to the right magnetic powder brake 12 through the torque transfer gear 7. The torque sensor 11 collects the no-load starting torque and uploads it to the MES system. The hole lifting cylinders on both sides of the loading test mechanism rise at the same time, and the workpiece hole is completed, and the load lifting docking is completed. The electric cylinder 1 extends, and the torque transmission gear 7 has a gap. It first rotates forward to the left limit and then reverses to the right limit. The second rotation angle is recorded as the gear group gap. The encoder collects data and uploads it to the MES system. The hole lifting cylinder 8 retracts, and the noise recorder 17 collects data and uploads it to the MES system. The values ​​of the input encoder 13 and the output encoder 9 are collected. The equipment uses a magnetic powder brake 12 to simulate the normal operation of the planetary reducer, and the HBM encoder is used to calculate the gear group angle and reduction ratio. The torque sensor is used to collect the starting torque, and the noise recorder 17 is used to collect the noise level.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A planetary reducer NVH test bench, comprising a load lifting docking electric cylinder (1), characterized in that: The lower surface of the load lifting docking electric cylinder (1) is fixedly connected to a working platform (2), the upper surface of the working platform (2) is installed with a workpiece positioning (3), and the upper surface of the workpiece positioning (3) is installed with a spline docking (4); The upper surface of the working platform (2) is equipped with a spline docking OK detection (5), the upper surface of the working platform (2) is equipped with a product pressing (6), the upper surface of the working platform (2) is equipped with a torque transmission gear (7), and the lower surface of the working platform (2) is fixedly connected with a hole lifting cylinder (8); An output end encoder (9) is fixedly connected to the lower surface of the working platform (2), a ball spline (10) is fixedly connected to the lower surface of the output end encoder (9), a torque sensor (11) is installed on the lower surface of the ball spline (10), and a magnetic powder brake (12) is installed on one side surface of the torque sensor (11); An input end encoder (13) is installed on the lower surface of the working platform (2), a starting torque detection torque sensor (14) is installed on the lower surface of the input end encoder (13), a test motor (15) is installed on the lower surface of the starting torque detection torque sensor (14), a spline docking electric cylinder (16) is installed on the lower surface of the working platform (2), and a noise recorder (17) is installed on the upper surface of the working platform (2).

2. The planetary reducer NVH test bench according to claim 1, characterized in that: The workpiece positioning (3) is connected to the load lifting docking electric cylinder (1) through the working platform (2), and the spline docking (4) is connected to the load lifting docking electric cylinder (1) through the working platform (2).

3. The planetary reducer NVH test bench according to claim 1, characterized in that: The spline docking OK detection (5) is connected to the spline docking (4) through the working platform (2).

4. The planetary reducer NVH test bench according to claim 1, characterized in that: The test motor (15) is connected to the input end encoder (13) via a starting torque detection torque sensor (14), and the spline docking electric cylinder (16) is connected to the spline docking (4) via a working platform (2).

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