Gap testing mechanism for EVVT electric cam phaser

Abstract

The utility model discloses an EVVT electric cam phaser gap testing mechanism which comprises a testing driving end and a testing load end, the testing driving end comprises a first pneumatic claw used for being connected with a product to be tested, and the first pneumatic claw is connected with a pneumatic sliding ring capable of rotating in the same direction without limitation. The pneumatic slip ring is sequentially connected with a coupling, an angle encoder I, a torque sensor I and a servo motor I, and the coupling, the angle encoder I and the torque sensor I are arranged on the ball screw; the test load end comprises a product positioning tool used for positioning a to-be-tested product, a second pneumatic claw used for being connected with the to-be-tested product, and a first air cylinder used for driving the second pneumatic claw. The second pneumatic claw is sequentially connected with a second angle encoder, a second torque sensor and a load mechanism. According to the utility model, the pneumatic claw is used for connecting the input end and the output end of a product, so that the test process becomes more efficient, and the test data better fits the actual data.

Description

An EVVT electric cam phaser gap testing mechanism Technical Field

[0001] This utility model relates to an EVVT electric cam phaser gap testing mechanism, belonging to the technical field of internal combustion engines and hybrid vehicles. Background Technology

[0002] Currently, EVVT (Electric Valve Timing) is used in both internal combustion engine and hybrid vehicles. It is a core component for controlling valve timing. By adjusting the opening and closing times of the intake and exhaust valves, it allows the engine to maintain good performance under different operating conditions, ultimately reducing vehicle energy consumption and pollutant emissions.

[0003] The first-generation valve timing device changed the valve timing through hydraulic drive, but it had problems with slow response and limited accuracy. With the development trend of vehicle electrification and intelligence, EVVT (electric valve timing device) came into being. It uses electric motor drive to adjust valve timing, which overcomes the defects of traditional technology and has the advantages of fast response and high control accuracy.

[0004] High-precision products mean a more refined processing and manufacturing environment and more accurate simulation testing. Currently, there are no mature EVVT gap testing institutions in the domestic market. Most companies are still relying on manual operations, which result in low production capacity and inaccurate test results. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide an EVVT electric cam phaser gap testing mechanism to replace the existing manual testing.

[0006] To address the aforementioned issues, this utility model provides an EVVT electric cam phaser gap testing mechanism, comprising a test drive end and a test load end. The test drive end includes a pneumatic gripper for connecting to the product under test. The pneumatic gripper is connected to a pneumatic slip ring that can rotate freely in the same direction. The pneumatic slip ring is sequentially connected to a coupling, an angle encoder, a torque sensor, and a servo motor. The coupling, angle encoder, and torque sensor are mounted on a ball screw, one end of which is connected to the output end of the servo motor. The test load end includes a product positioning fixture for positioning the product under test, a clamping block for pressing the product under test, a cylinder for driving the clamping block, a pneumatic gripper for connecting to the product under test, and a cylinder for driving the pneumatic gripper. The pneumatic gripper is sequentially connected to an angle encoder, a torque sensor, and a load mechanism.

[0007] Preferably, the torque sensor is connected to the output terminal of the servo motor via a torque limiter.

[0008] Preferably, the torque sensor 2 is connected to the load mechanism via a torque limiter 2.

[0009] In the aforementioned testing mechanism: Pneumatic gripper 1 is the test connector, rigidly transmitting the drive torque to the product end; the pneumatic slip ring is the air passage, allowing unrestricted rotation in the same direction; the coupling connects the upper and lower mechanisms; angle encoder 1 collects the drive end rotation angle; torque sensor 1 collects the drive end rotation torque; torque limiter 1 protects the torque sensor; servo motor 1 provides the test drive power; the ball screw is the vertical moving part of the testing mechanism; servo motor 2 provides the vertical moving power of the testing mechanism; cylinder 1 is an obstacle cylinder, facilitating product placement; the clamping block is the product clamping part; pneumatic gripper 2 is the product output connector; angle encoder 2 collects the load end rotation angle; torque sensor 2 collects the load end torque; torque limiter 2 protects the torque sensor; the load mechanism provides reverse load power to the load end; and cylinder 2 is the product clamping cylinder.

[0010] This invention utilizes a pneumatic gripper to connect the input and output ends of a product, making the testing process more efficient and the test data more closely aligned with actual data.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. Products using pneumatic gripper internal support connections can achieve absolute high performance within the test torque range, avoiding deviations in test results caused by the introduction of external variables;

[0013] 2. The load end adopts a pneumatic gripper internal support mechanism to connect the product output end, which is faster and more efficient than manually tightening the screws at the product output end. Attached Figure Description

[0014] Figure 1 is a general assembly drawing of the EVVT electric cam phaser gap testing mechanism provided by this utility model;

[0015] Figure 2 is a schematic diagram of the test driver;

[0016] Figure 3 is a schematic diagram of the test load end.

[0017] In Figure 1-3, 1-pneumatic gripper one, 2-pneumatic slip ring, 3-coupling, 4-angle encoder one, 5-torque sensor one, 6-torque limiter one, 7-servo motor one, 8-ball screw, 9-servo motor two, 10-product positioning fixture, -product under test, 12-cylinder one, 13-clamping block, 14-pneumatic gripper two, 15-angle encoder two, 16-torque sensor two, 17-torque limiter two, 18-load mechanism, 19-cylinder two. Detailed Implementation

[0018] To make this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings.

[0019] Example

[0020] As shown in Figure 1, this utility model provides an EVVT electric cam phaser gap testing mechanism, which includes a test drive end and a test load end.

[0021] As shown in Figure 2, the test drive end includes a pneumatic gripper 1 for connecting to the product under test. The pneumatic gripper 1 is connected to a pneumatic slip ring 2 that can rotate freely in the same direction. The pneumatic slip ring 2 is sequentially connected to a coupling 3, an angle encoder 4, a torque sensor 5, and a servo motor 7. The coupling 3, the angle encoder 4, and the torque sensor 5 are mounted on a ball screw 8. One end of the ball screw 8 is connected to the output end of the servo motor 9. The torque sensor 5 is connected to the output end of the servo motor 7 through a torque limiter 6.

[0022] As shown in Figure 3, the test load end includes a product positioning fixture 10 for positioning the product under test, a clamping block 13 for clamping the product under test, a second cylinder 19 for driving the clamping block 13, a second pneumatic gripper 14 for connecting with the product under test, and a first cylinder 12 for driving the second pneumatic gripper 14. The second pneumatic gripper 14 is sequentially connected to an angle encoder 15, a torque sensor 16, and a load mechanism 18. The second torque sensor 16 is connected to the load mechanism 18 through a torque limiter 17.

[0023] This technical solution is an EVVT phaser gap testing mechanism, which consists of a test drive end, an EVVT electric cam phaser, and a test load end. A robotic arm picks up the product to be tested and places it on the product positioning fixture 10. The second gripper 14 clamps the product, the first cylinder 12 retracts, and the second cylinder 19 extends to press the EVVT product with the help of the clamping block 13. The second servo motor 9 drives the ball screw 8 to rotate and drive the test end to descend. The first gripper 1 inserts into the EVVT product and opens and fixes the product. The first servo motor 7 outputs torque to start the test. During the test, the data of the first angle encoder 4 and the second angle encoder 15 are collected in real time. The difference between the two data is the internal angle gap of the EVVT product.

Claims

1. An EVVT electric cam phaser gap testing mechanism characterized by, The test drive end includes a test drive end () and a test load end (). The test drive end () includes a pneumatic gripper (1) for connecting to the product under test (). The pneumatic gripper (1) is connected to a pneumatic slip ring (2) that can rotate freely in the same direction. The pneumatic slip ring (2) is connected in sequence to a coupling (3), an angle encoder (4), a torque sensor (5), and a servo motor (7). The coupling (3), the angle encoder (4), and the torque sensor (5) are mounted on a ball screw (8). One end of the ball screw (8) is connected to... The output end of the servo motor 2 (9) is connected; the test load end () includes a product positioning fixture (10) for positioning the product under test (), a clamping block (13) for clamping the product under test (), a cylinder 2 (19) for driving the clamping block (13), a gripper 2 (14) for connecting with the product under test (), and a cylinder 1 (12) for driving the gripper 2 (14). The gripper 2 (14) is connected in sequence to an angle encoder 2 (15), a torque sensor 2 (16), and a load mechanism (18).

2. The EVVT electric cam phaser gap test mechanism of claim 1, wherein, The torque sensor (5) is connected to the output terminal of the servo motor (7) via the torque limiter (6).

3. The EVVT electric cam phaser gap testing mechanism as described in claim 1, characterized in that, The torque sensor 2 (16) is connected to the load mechanism (18) through the torque limiter 2 (17).

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