A high-precision rotary table for testing automotive electronics

Abstract

A high-precision rotary table for automobile electronic device test, comprising: a rotary table base plate; a horizontal rotary actuator fixed on the rotary table base plate, with an output end connected to an angle limiting plate; a rotary shaft fixed on the angle limiting plate; a rotary arm frame fixed on the upper end of the rotary shaft; a turnover plate in rotary connection with the rotary arm frame, with one end of the turnover plate driven by a pitch rotary actuator; the other end of the turnover plate connected to an external encoder; a detection fixture detachably arranged on the turnover plate, comprising a fixture base plate, with a sample piece placement groove arranged on the fixture base plate, the intersection of the axis of the rotary shaft and the turnover shaft of the turnover plate located in the sample piece placement groove, and a plurality of clamping claws arranged on the outer periphery of the sample piece placement groove. The utility model adds a rotary angle monitoring device at the horizontal rotary actuator and the pitch rotary actuator, improves the accuracy of the pitch and horizontal rotation of the rotary table; the detection fixture with clamping claw type positioning is used to fix the automobile electronic device to be tested, improving the compatibility of different models of devices.

Description

Technical Field

[0001] This utility model relates to the field of turntable technology, and in particular to a high-precision turntable for testing automotive electronic equipment. Background Technology

[0002] With the development of intelligent driving technology, the types of sensors (radar, cameras, etc.) installed on automobiles are becoming increasingly diverse, making the testing of these sensors particularly important. When testing these electronic components, a turntable is often needed as a carrier to control their rotational or pitching motion. In some special tests, the test piece needs to rotate and pitch around a certain point while ensuring high-precision positioning. Existing two-dimensional turntables generally suffer from poor rotational accuracy, complex structure, and large angular displacement measurement errors. In addition, due to the wide variety of sensor types and shapes, the turntable has poor compatibility, which also increases testing costs.

[0003] Therefore, in view of the shortcomings of existing technologies, it is necessary to design a high-precision turntable for testing automotive electronic equipment to solve the above problems.

[0004] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solution of this utility model and facilitating the understanding of those skilled in the art. It should not be assumed that the above content is known to those skilled in the art simply because it has been described in the background section of this utility model. Utility Model Content

[0005] To overcome the shortcomings of the prior art, the present invention aims to disclose a high-precision turntable for testing automotive electronic equipment, which improves the positioning accuracy during testing of automotive electronic equipment and increases compatibility with different models of automotive electronic equipment.

[0006] This utility model discloses a high-precision turntable for testing automotive electronic equipment, comprising:

[0007] The turntable base plate is equipped with limit photoelectric sensors.

[0008] A horizontal rotary actuator is fixed on the base plate of the turntable. The output end of the horizontal rotary actuator is connected to an angle limiting plate and can rotate in the horizontal direction. The angle limiting plate is provided with a limiting sheet metal part corresponding to the limiting photoelectric device. The rotation angle of the horizontal rotary actuator is limited by the cooperation of the limiting sheet metal part and the limiting photoelectric device to prevent the continuous rotation of the rotating shaft from causing the error accumulation of the absolute angle position of the turntable.

[0009] The rotating shaft is fixed to the angle limiting plate.

[0010] The boom is fixed to the upper end of the rotating shaft.

[0011] The tilting plate is rotatably connected to the boom. The tilting axis of the tilting plate is perpendicular to the axis of the rotation axis. One end of the tilting plate is driven by a pitch rotary actuator, which is fixed on the boom and its output end can rotate in the vertical direction. The other end of the tilting plate is connected to an external encoder for monitoring the tilting angle. By comparing the real-time parameters of the external encoder and the pitch axis rotary actuator, the rotation accuracy of the pitch axis can be obtained. At the same time, the data from the external encoder can be used as feedback and input into the pitch axis rotary actuator for more precise control of the pitch angle.

[0012] The testing fixture is detachably mounted on the flip plate. The intersection of the axis of rotation and the flip axis of the flip plate is located at the testing fixture. When the turntable rotates, it can ensure that the automotive electronic device under test always rotates around a certain fixed point, simulating the usage posture of the automotive electronic device under test under real conditions.

[0013] Preferred technical solution: The testing fixture includes a fixture base, which is detachably mounted on the flip plate. The fixture base is provided with a sample placement slot. The intersection of the axis of the rotation shaft and the flip axis of the flip plate is located in the sample placement slot. Several clips are provided on the outer periphery of the sample placement slot. The clip-on fixing is highly compatible with different models of automotive electronic equipment under test and is convenient to pick up and put down.

[0014] Preferred technical solution: The latch is driven by air pressure, which is simple in structure and easy to assemble and disassemble.

[0015] Preferred technical solution: The boom frame includes a boom base plate and two support arms. The boom base plate is fixed to the top of the rotating shaft. The two support arms are symmetrically arranged on the boom base plate with the axis of the rotating shaft as the center. The two ends of the tilting plate are rotatably connected to the two support arms respectively.

[0016] Preferred technical solution: Both ends of the flipping plate are connected to the two support arms through slewing bearings to reduce flipping resistance.

[0017] Preferred technical solution: The rotating shaft has a hollow structure, which reduces the weight of the device.

[0018] Preferred technical solution: A rotational hard limit block is provided on the turntable base plate corresponding to the angle limit plate to prevent problems such as wire harness entanglement caused by continuous rotation of the rotating shaft in the same direction.

[0019] Due to the application of the above technical solution, the high-precision turntable for testing automotive electronic equipment of this utility model has the following beneficial effects:

[0020] (1) Add rotation angle monitoring devices to the horizontal rotary actuator and the pitch rotary actuator to improve the accuracy of the turntable pitch and horizontal rotation, and avoid error accumulation through real-time detection at multiple positions; arrange detection fixtures at the intersection of the flipping and rotating axes to avoid the spatial positioning of the automotive electronic equipment under test shifts when the angle is adjusted, reduce the difficulty of detection and calibration, and improve detection accuracy.

[0021] (2) A claw-type positioning test fixture is used to fix the automotive electronic equipment under test, thereby improving the compatibility with different models of equipment. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a high-precision turntable structure for testing automotive electronic equipment according to the present invention;

[0023] Figure 2 This is a schematic diagram of the testing fixture in this utility model.

[0024] In the attached diagrams above, 1. Turntable base plate; 11. Limit photoelectric sensor; 12. Rotary hard limit block; 2. Horizontal rotary actuator; 21. Angle limit plate; 22. Limit sheet metal part; 3. Rotary shaft; 4. Rotary arm frame; 41. Rotary arm base plate; 42. Support arm; 5. Tilting plate; 51. Pitch rotary actuator; 52. External encoder; 6. Inspection fixture; 61. Fixture base; 62. Sample placement slot; 63. Clamping claw. Detailed Implementation

[0025] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. These terms are used only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "horizontal," "vertical," and "suspended," etc., do not indicate that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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.

[0028] Example:

[0029] like Figure 1 As shown, this utility model discloses a high-precision turntable for testing automotive electronic equipment, including a turntable base plate 1, a horizontal rotary actuator 2, a rotary shaft 3, a rotary arm 4, a tilting plate 5, and a testing fixture 6. The main components of this utility model will be described in detail below:

[0030] like Figure 1 As shown, the turntable base plate 1 is provided with a limit photoelectric sensor 11 and a rotational hard limit block 12.

[0031] like Figure 1 As shown, the horizontal rotary actuator 2 is fixed to the turntable base plate 1 by bolts. Its output end is connected to an angle limiting plate 21 corresponding to the rotary hard limiting block 12. The output end of the horizontal rotary actuator 2 drives the angle limiting plate 21 to rotate in the horizontal direction. The angle limiting plate 21 is provided with a limiting sheet metal part 22 corresponding to the limiting photoelectric 11.

[0032] like Figure 1 As shown, the rotating shaft 3 is a hollow structure and is fixed to the angle limiting plate 21 by bolts. During operation, the rotating shaft 3 rotates synchronously with the limiting sheet metal part 22. It should be noted that the axis of the rotating shaft 3, the rotation center line of the angle limiting plate 21, and the axis of the output end of the horizontal rotating actuator 2 are set to coincide.

[0033] like Figure 1 As shown, the boom frame 4 includes a boom base plate 41 and two support arms 42. The boom base plate 41 is fixed to the top of the rotating shaft 3, and the two support arms 42 are symmetrically arranged on the boom base plate 4 with the axis of the rotating shaft 3 as the center.

[0034] like Figure 1 As shown, both ends of the flip plate 5 are connected to the two support arms 42 via slewing bearings. The flip axis of the flip plate 5 is perpendicular to the axis of the rotating shaft 3. One end of the flip plate 5 is driven by a pitch rotary actuator 51, which is fixed on the rotating arm frame 4 and its output end can rotate in the vertical direction. The other end of the flip plate 5 is connected to an external encoder 52 for monitoring the flip angle.

[0035] like Figure 1 and Figure 2 As shown, the testing fixture 6 includes a fixture base 61, which is detachably mounted on the flip plate 5. The fixture base 61 has a sample placement slot 62, and the intersection of the axis of the rotation shaft 3 and the flip axis of the flip plate 5 is located within the sample placement slot 62. In use, the automotive electronic device under test is placed in the sample placement slot 62, with its antenna center located at the intersection of the axis of the rotation shaft 3 and the flip axis of the flip plate 5. The sample placement slot 62 has four sets of latches on its outer periphery. The latches 63 are connected to a pneumatic drive device for operation. In use, the pneumatic drive latches 63 press the automotive electronic device under test into the sample placement slot 62. Due to the large rotation space of the latches 63, it can meet the fixing requirements of different models of automotive electronic devices under test. It should be noted that the above structure is only an example and not a limitation. In this embodiment, the sample placement slot 62 has four sets of latches on its outer periphery and is driven by pneumatic pressure. However, in other embodiments, the latches can also be in three or five sets and can be driven electrically or hydraulically.

[0036] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A high-precision turntable for testing automotive electronic equipment, characterized in that, include: Turntable base plate (1), wherein a limiting photoelectric device (11) is provided on the turntable base plate (1); A horizontal rotary actuator (2) is fixed on the turntable base plate (1). The output end of the horizontal rotary actuator (2) is connected to an angle limiting plate (21) and can rotate in the horizontal direction. The angle limiting plate (21) is provided with a limiting sheet metal part (22) corresponding to the limiting photoelectric (11). The rotating shaft (3) is fixed on the angle limiting plate (21); The boom (4) is fixed to the upper end of the rotating shaft (3); A flip plate (5) is rotatably connected to the boom (4). The flip axis of the flip plate (5) is perpendicular to the axis of the rotating shaft (3). One end of the flip plate (5) is driven by a pitch-rotor actuator (51). The pitch-rotor actuator (51) is fixed on the boom (4) and its output end can rotate in the vertical direction. The other end of the flip plate (5) is connected to an external encoder (52) for monitoring the flip angle. The testing fixture (6) is detachably mounted on the flip plate (5), and the intersection of the axis of the rotating shaft (3) and the flip axis of the flip plate (5) is located at the testing fixture (6).

2. The high-precision turntable for testing automotive electronic equipment according to claim 1, characterized in that: The testing fixture (6) includes a fixture base (61), which is detachably mounted on the flip plate (5). The fixture base (61) is provided with a sample placement groove (62). The intersection of the axis of the rotating shaft (3) and the flip axis of the flip plate (5) is located in the sample placement groove (62). The sample placement groove (62) is provided with several latches (63) on its outer periphery.

3. A high-precision turntable for testing automotive electronic equipment according to claim 2, characterized in that: The latch (63) is driven by air pressure.

4. A high-precision turntable for testing automotive electronic equipment according to claim 3, characterized in that: The rotating arm frame (4) includes a rotating arm base plate (41) and two support arms (42). The rotating arm base plate (41) is fixed to the top of the rotating shaft (3). The two support arms (42) are symmetrically arranged on the rotating arm base plate (4) with the axis of the rotating shaft (3) as the center. The two ends of the flip plate (5) are rotatably connected to the two support arms (42).

5. A high-precision turntable for testing automotive electronic equipment according to claim 4, characterized in that: Both ends of the flip plate (5) are connected to the two support arms (42) via slewing bearings.

6. A high-precision turntable for testing automotive electronic equipment according to claim 1, characterized in that: The rotating shaft (3) has a hollow structure.

7. A high-precision turntable for testing automotive electronic equipment according to claim 1, characterized in that: A rotating hard limit block (12) is provided on the turntable base plate (1) corresponding to the angle limiting plate (21).

Images