Automobile air conditioner actuator angle feedback gear test tool

Abstract

The utility model discloses an angle feedback gear test tool for an automobile air conditioner actuator in the technical field of test tools, and aims to solve the problems of tedious and unreliable manual gear test precision in the prior art. The device comprises a workbench and a control unit, the workbench is provided with a substrate, the substrate is rotatably provided with a test gear set and a tested gear set, a plurality of gears in the test gear set and the tested gear set are mutually engaged and connected to form an input wheel, a transmission wheel and an output wheel, and the substrate is rotatably provided with a motor in transmission connection with the input wheel. An input encoder is arranged on the motor, and an output encoder in transmission connection with the output wheel is further installed on the base plate. The device is used for testing the accuracy degree of the feedback angle of the actuator gear, can quickly complete the detection of durability and transmission ratio after the tested gear is simply installed, is beneficial to control the accuracy of the precision of the produced gear, reduces the reworking process, improves the product quality, and is simple and effective in measurement mode.

Description

Technical Field

[0001] This utility model relates to a testing fixture for the angle feedback gear of an automotive air conditioning actuator, belonging to the field of testing fixture technology. Background Technology

[0002] The improvement in the feedback angle accuracy of the automotive air conditioning mode actuator is primarily to meet the increasingly stringent product quality and customer requirements of the automotive industry. In the manufacturing of gears for automotive air conditioning actuators, a typical gear mold usually has 16 cavities. After injection molding, key dimensions of a few cavities are randomly selected for assembly. The assembled actuator undergoes voltage feedback testing. Defective products are disassembled, have their gears replaced, and are reworked and retested to meet production requirements. Currently, the first-pass yield is approximately 85%, and after rework, the final yield is approximately 95%. This process results in low production efficiency, high product scrap rates, and overly cumbersome measurement and rework processes, hindering cost control and impacting market penetration. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a testing fixture for the angle feedback gear of an automotive air conditioning actuator. This fixture is used to test the accuracy of the feedback angle of the actuator gear. It can quickly complete the durability and transmission ratio test after the gear under test is simply installed. This is beneficial for controlling the accuracy of the gear precision in production, reducing rework processes, improving product quality, and the measurement method is simple and effective.

[0004] To achieve the above objectives, this utility model employs the following technical solution:

[0005] The present invention provides a testing fixture for the angle feedback gear of an automotive air conditioning actuator, comprising a workbench and a control unit. A base plate is mounted on the workbench, and a test gear set and a gear set under test are rotatably mounted on the base plate. Multiple gears in the test gear set and the gear set under test are meshed with each other to form an input wheel, a transmission wheel, and an output wheel. A motor that is rotatably connected to the input wheel is also mounted on the base plate. The motor is equipped with an input encoder for detecting the transmission angle of the motor. An output encoder that is connected to the output wheel is also mounted on the base plate. The control unit is configured to calculate the final transmission ratio based on the angle data fed back by the two encoders.

[0006] Specifically, the substrate includes a test area and positioning areas located on both sides of the test area. The test area is detachably mounted with a test board. The test gear set and the gear set under test are respectively disposed on the test board and the positioning area of ​​the test area, and the gear set under test is rotatably disposed on the test board.

[0007] Specifically, it also includes a push plate and a pushing mechanism. Multiple connecting shafts are rotatably mounted on the push plate, and linear bearings for the connecting shafts to move up and down are mounted on the test plate. The gears of the gear set under test are respectively fixed on the corresponding connecting shafts, and the pushing mechanism is used to control the height position of the gears on the connecting shafts.

[0008] Specifically, a support frame is installed on the workbench, and a vision camera is installed on the support frame. The vision camera is used to photograph the gears on the connecting shaft. A lifting mechanism for driving the support frame to rise and fall is also installed on the workbench.

[0009] Specifically, the support frame has a horizontally arranged sliding groove, and the vision camera is slidably arranged in the sliding groove.

[0010] Specifically, lighting lamps are installed on both sides of the support frame, and the angles of both lighting lamps are adjustable.

[0011] Specifically, mounting plates are fixedly installed on both sides of the bottom of the support frame, and the lighting lamp is rotatably mounted on the mounting plate. The mounting plate is also provided with an arc groove centered on the rotation axis of the lighting lamp. A screw rod is also installed on the lighting lamp and is movably mounted in the arc groove. A locking nut is threaded onto the screw rod.

[0012] Specifically, each of the two positioning areas is rotatably equipped with an input rod and an output rod whose axial center position remains unchanged. An arc-shaped groove is provided on the side of each input rod and an movably arranged positioning rod is provided in each of the two arc-shaped grooves. A positioning element for locking the position of the positioning rod is threaded onto the positioning rod.

[0013] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0014] This invention provides a simulated testing fixture. Test gears are pre-assembled, and then the gear to be tested is placed on top. The gears rotate in unison via a motor. The rotation angle values ​​read by encoders on both sides are used to calculate whether the final transmission ratio accuracy meets the requirements. This allows for the measurement of whether the gears in a batch of products are qualified, thus preventing the outflow of defective gears at the source. There is no need for repeated manual measurements; the accuracy and reliability can be judged directly from the results. The simulated measurement process is simpler, controlling the product yield and reducing the time required for a large number of measurements. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the gear testing fixture provided in this embodiment of the utility model;

[0016] Figure 2 This is another angled schematic diagram of the gear testing fixture provided in this embodiment of the utility model;

[0017] Figure 3 This is a side view of the gear testing fixture provided in this embodiment of the utility model;

[0018] Figure 4 This is a utility model Figure 3 A sectional view of the gear testing fixture provided in the embodiment, along the AA direction.

[0019] Reference numerals: 1. Workbench; 2. Base plate; 3. Test gear set; 4. Gear set under test; 5. Motor; 6. Output encoder; 7. Push plate; 8. Pushing mechanism; 9. Connecting shaft; 10. Lifting mechanism; 11. Support frame; 13. Vision camera; 14. Mounting plate; 15. Arc groove; 16. Lighting lamp; 17. Screw; 18. Locking nut; 19. Test plate; 20. Arc groove; 21. Positioning component. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0021] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Example:

[0024] This utility model provides a testing fixture for the angle feedback gear of an automotive air conditioning actuator, used to test the accuracy of the actuator gear feedback angle. It can quickly complete the durability and transmission ratio testing after the gear under test is simply installed, which is beneficial for controlling the accuracy of produced gears, reducing rework processes, and improving product quality. The measurement method is simple and effective. To realize the structural function of the device, the fixture includes a workbench 1 and a control unit. Specifically, a base plate 2 is mounted on the workbench 1, and a test gear set 3 and a gear set under test 4 are rotatably mounted on the base plate 2. Figure 1 As shown, multiple gears in the test gear set 3 and the gear set under test 4 mesh with each other to form an input wheel, a transmission wheel, and an output wheel. To achieve the transmission between the gears, a motor 5, which is connected to the input wheel, is rotatably mounted on the base plate 2. An input encoder for detecting the transmission angle of the motor 5 is also installed on the motor 5. Finally, an output encoder 6, which is connected to the output wheel, is also mounted on the base plate 2. The control unit is electrically connected to the two encoders and is configured to calculate the final transmission ratio based on the angle data fed back by the two encoders. With this design, the fixture can replace or insert the gears of the gear set under test 4 when testing is required. By running a rated number of revolutions, the error between the input and output can be calculated, which facilitates the judgment of the connection stability of each tooth and whether the gear matching accuracy meets the requirements. In addition, the load capacity of the gears can be calculated through long-term operation to see if it can meet the required strength. This simplifies the process of repeated manual measurement, helps to control the gear accuracy during production assembly, and ensures product quality.

[0025] This utility model provides a testing fixture for the angle feedback gear of an automotive air conditioning actuator. To facilitate testing of gears for various product models, and because the same test gear set 3 template is not compatible with the testing requirements of other gear sets, this fixture improves compatibility by providing a base plate 2 that includes a testing area and positioning areas on both sides of the testing area. Figure 1 As shown, specifically, a test plate 19 is detachably installed in the test area, and the test gear set 3 and the gear set under test 4 are respectively set on the test plate 19 and the positioning area in the test area. The gear set under test 4 is set to rotate only on the test plate 19. When it is necessary to change the plate type to test different gear styles, the test plate 19 and the test gear set 3 on it can be replaced to easily measure different styles of gears under test.

[0026] This utility model provides a testing fixture for an angle feedback gear of an automotive air conditioning actuator. To facilitate the installation and assembly of the gear under test, the fixture also includes a push plate 7 and a pushing mechanism 8. Figure 4As shown, multiple connecting shafts 9 are rotatably mounted on the push plate 7, and linear bearings for the lifting and lowering of the connecting shafts 9 are mounted on the test plate 19. The gears of the gear set 4 to be tested are fixed on the corresponding connecting shafts 9. At this time, the jacking mechanism 8 is used to control the height position of the gears on the connecting shafts 9. It can be a cylinder or other structure. When the push plate 7 is lifted, the multiple gears to be tested that are installed at the same time will also be pushed out to facilitate disassembly and replacement.

[0027] This utility model provides a test fixture for the angle feedback gear of an automotive air conditioning actuator. In order to facilitate the detection of whether the gear under test undergoes obvious deformation before and after operation, a support frame 11 can be installed on the workbench 1, and a vision camera 13 can be installed on the support frame 11. The vision camera 13 is used to photograph the gear on the connecting shaft 9. In particular, it can be used in conjunction with the push mechanism 8 to push out the gear under test for easy detection. For this purpose, a lifting mechanism 10 for driving the support frame 11 to rise and fall can also be installed on the workbench 1.

[0028] This utility model provides a testing fixture for an angle feedback gear of an automotive air conditioning actuator. To facilitate easy imaging by the vision camera 13 in the corresponding area, a horizontally oriented groove is provided on the support frame 11. The vision camera 13 is slidably positioned within the groove, and its position can be manually adjusted. To improve the visibility of the gear during imaging, illumination lamps 16 are installed on both sides of the support frame 11. By distributing the light sources on both sides, the shadows on the gear can be effectively reduced. Furthermore, the angles of both illumination lamps 16 are adjustable, allowing the light source to illuminate the desired area. As a specific adjustment method, mounting plates 14 are fixedly installed on both sides of the bottom of the support frame 11, and the illumination lamps 16 are rotatably mounted on the mounting plates 14. Figure 2 As shown, the mounting plate 14 is also provided with an arc groove 15 centered on the rotation axis of the lighting lamp 16. At the same time, a screw 17 is also installed on the lighting lamp 16 and is movably disposed in the arc groove 15. Finally, a locking nut 18 is threadedly connected to the screw 17. When it is necessary to adjust the angle of the light, loosen the locking nut 18, manually adjust the angle of the lighting lamp 16, and then tighten it after adjusting to the appropriate position.

[0029] This utility model provides a testing fixture for the angle feedback gear of an automotive air conditioning actuator. When changing different test plates 19, to ensure effective engagement between the input gear and the output gear mounted on the test plate, two input rods and an output rod with fixed axial positions are rotatably mounted in two positioning areas. These rods connect the motor 5 and the output encoder 6, respectively. To ensure effective meshing between adjacent gears and the gears on the test plate 19, arc-shaped grooves 20 are provided on the sides of both the input and output rods. (Refer to...) Figure 1 As shown, a positioning rod is movably disposed within each of the two arc-shaped grooves 20, and a positioning element 21 for locking the position of the positioning rod is threaded onto the positioning rod. The positioning rod, movably disposed within the arc-shaped groove 20, can be used to install the test gear and adjust the position of the test gear surrounding the corresponding input and output rods. That is, the engagement position of the test gear can be adjusted by adjusting the position of the positioning rod. The positioning element 21 can be a nut or other positioning mechanism; the specific structure is not limited here. As a preferred embodiment, a rotating disk (not shown in the figure) can also be disposed beside the corresponding input and output rods. A straight groove is formed on this disk, and the positioning rod can be movably disposed within this straight groove and its position can be adjusted. Other specific embodiments will not be elaborated upon here.

[0030] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An automotive air conditioning actuator angle feedback gear testing tool, characterized in that, The utility model provides a kind of test device for gear transmission ratio, including workbench (1) and control unit, the workbench (1) is installed with base plate (2), the base plate (2) is rotatably provided with test gear set (3) and gear set (4) to be measured, multiple gears in the test gear set (3) and gear set (4) to be measured are connected with each other to form input wheel, transmission wheel and output wheel, motor (5) is rotatably provided on the base plate (2) and is drivenly connected with input wheel, input encoder for detecting the transmission angle of motor (5) is provided on the motor (5), output encoder (6) is also installed on the base plate (2) and is drivenly connected with output wheel, and the control unit is configured to calculate the final transmission ratio according to the angle data fed back by the two encoders.

2. The test tool for an angle feedback gear of an actuator of an automobile air conditioner according to claim 1, wherein The base plate (2) includes a test area and positioning areas on both sides of the test area, the test area is detachably mounted with a test plate (19), the test gear set (3) and the gear set (4) to be measured are respectively arranged on the test plate (19) and the positioning areas of the test area, and the gear set (4) to be measured is rotatably arranged on the test plate (19).

3. The test tool for an angle feedback gear of an actuator of an automobile air conditioner according to claim 2, wherein It also includes a push plate (7) and a pushing mechanism (8), the push plate (7) is rotatably mounted with a plurality of connecting shafts (9), the test plate (19) is mounted with linear bearings for the lifting movement of the connecting shafts (9), the gears of the gear set (4) to be measured are respectively fixedly arranged on the corresponding connecting shafts (9), and the pushing mechanism (8) is used to control the height position of the gears on the connecting shafts (9).

4. The angle feedback gear testing tool for an automotive air conditioner actuator according to claim 3, characterized in that, The workbench (1) is mounted with a support frame (11), the support frame (11) is mounted with a visual camera (13), the visual camera (13) is used to take pictures of the gears on the connecting shafts (9), and the workbench (1) is also mounted with a lifting mechanism (10) for driving the lifting of the support frame (11).

5. The test tool for an angle feedback gear of an actuator of an automotive air conditioner according to claim 4, wherein The support frame (11) is provided with a horizontally arranged sliding groove, and the visual camera (13) is slidingly arranged in the sliding groove.

6. The test tool for an angle feedback gear of an actuator of an automotive air conditioner according to claim 4, wherein The support frame (11) is mounted with illuminating lamps (16) on both sides, and the angles of the two illuminating lamps (16) are adjustable.

7. The test tool for an angle feedback gear of an actuator of an automotive air conditioner according to claim 6, wherein The support frame (11) is fixedly provided with mounting plates (14) on both sides of the bottom, the illuminating lamps (16) are rotatably arranged on the mounting plates (14), the mounting plates (14) are also provided with circular arc grooves (15) with the rotation axes of the illuminating lamps (16) as centers, the illuminating lamps (16) are also mounted with screw rods (17) movably arranged in the circular arc grooves (15), and the screw rods (17) are threadedly connected with locking nuts (18).

8. The angle feedback gear testing tool for an automotive air conditioning actuator according to claim 2, characterized in that, The two positioning areas are respectively rotatably provided with two input rods and output rods with unchanged axial positions, arc-shaped grooves (20) are arranged on the sides of the input rods and output rods, coordinating rods are movably arranged in the two arc-shaped grooves (20), and the coordinating rods are threadedly connected with positioning members (21) for locking the positions of the coordinating rods.

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