Rotating work platform

Abstract

A rotating work platform comprises at least two groups of sensor assemblies corresponding to at least two stations, the sensor assemblies comprising at least one sensor, the rotating disc is further provided with an angle detection device for detecting the angle deviation of the cam divider, the angle detection device is located at the rotation center of the rotating disc, a control unit is connected with the angle detection device, the sensor is connected with the control unit; the angle detection device and / or the sensor send signals to the control unit, the control unit receives the signals of the angle detection device and / or the sensor, and sends control signals to the motor to control the rotation of the motor; the tool is provided with an identification chip, a card reader is arranged on the cam divider mounting plate, and the card reader is connected with the control unit; the angle deviation of the cam divider can be found, the control motor is rotated to compensate for the rotation deviation, and through the setting of the identification chip and the card reader, the rotating platform can be quickly deployed on different production lines as needed, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of equipment manufacturing, specifically to a rotary working platform. Background Technology

[0002] In existing technologies, rotary work platforms are typically installed on assembly lines to process or assemble different products. These platforms include motors, cam dividers, and tooling for fixing the products. Different assembly lines have very precise requirements for the rotation speed and rotation angle of the rotary work platform. If the cam divider deviates in angle due to wear or heavy load, it will affect the normal operation of the entire assembly line. Furthermore, when rotary work platforms are deployed on multi-purpose assembly lines, such as those producing wall switches, where the models, structures, and internal components of the wall switches differ slightly, switching between different wall switches requires manual replacement and adjustment of parameters such as the dwell time, rotation angle, and rotation speed of the cam divider. This is inefficient and prone to errors. Utility Model Content

[0003] The purpose of this invention is to overcome at least one defect of the prior art and provide a rotary work platform that can monitor angular deviations and be deployed quickly.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This application provides a rotary work platform, including a control unit, a cam divider, a cam divider mounting plate, a rotary disk, a motor, and at least one tooling. The rotary disk has at least two workstations spaced at circular intervals, and the tooling is mounted on each workstation for fixing workpieces. The cam divider is mounted on the cam divider mounting plate. The motor is connected to the input shaft of the cam divider, and the output shaft of the cam divider is connected to the rotary disk. The control unit is connected to the motor.

[0006] The system includes at least two sets of sensor assemblies corresponding to at least two workstations. Each sensor assembly includes at least one sensor. The rotary disk is also equipped with an angle detection device for detecting the rotation angle deviation of the cam divider. The angle detection device is located at the rotation center of the rotary disk. The control unit is connected to the angle detection device, and the sensor is connected to the control unit. The angle detection device and / or the sensor send signals to the control unit. The control unit receives the signals from the angle detection device and / or the sensor and sends control signals to the motor to control the rotation of the motor. The tooling is equipped with an identification chip, and the cam divider mounting plate is equipped with a card reader, which is connected to the control unit.

[0007] In one possible implementation, the workstation and tooling are fixedly installed by an electromagnet, and the control terminal of the electromagnet is connected to the control unit.

[0008] In one possible implementation, the cam divider mounting plate and the rotary disk are arranged in parallel, the motor and sensor assembly are located between the cam divider mounting plate and the rotary disk, a mounting bracket is fixedly mounted on the cam divider mounting plate, and the sensor is mounted on the mounting bracket and spaced apart from the cam divider.

[0009] In one possible implementation, the workstation includes a tooling mounting slot, in which a tooling is installed, and a first through hole is provided in the tooling mounting slot, with at least one sensor corresponding to the first through hole.

[0010] In one possible implementation, the tooling is provided with at least one slot for mounting a workpiece, the slot having a second through hole, and at least one sensor corresponding to the second through hole.

[0011] In one possible implementation, the sensor assembly includes two sensors, a main sensor and an auxiliary sensor, wherein the main sensor is used to detect the state of the workpiece at the corresponding workstation; and the auxiliary sensor is used to perform secondary detection of the state of the workpiece at the corresponding workstation, and / or to detect whether the part is assembled onto the workpiece, and / or whether the part is properly assembled.

[0012] In one possible implementation, the workstation includes a tooling mounting slot, and at least one electromagnet is provided on the bottom of the tooling and / or the side of the tooling mounting slot facing the tooling, and the tooling is fixedly mounted in the tooling mounting slot by means of the electromagnet.

[0013] In one possible implementation, the identification chip is an RFID chip.

[0014] In one possible implementation, the tooling is provided with two slots, two workpieces are respectively installed in the two slots, the two slots are respectively provided with guide chamfers, and at least two anti-misalignment posts are provided between the two slots.

[0015] In one possible implementation, the angle detection device is an angle encoder; and / or, the sensor is a fiber optic sensor, an infrared sensor, a proximity sensor, or an eddy current displacement sensor.

[0016] Compared to existing technologies, this application provides a rotary work platform equipped with sensor components corresponding to each workstation. The rotary disk is also equipped with an angle detection device for detecting the rotation angle deviation of the cam divider. The angle detection device and / or sensor send signals to the control unit, and the control unit receives the signals from the angle detection device and / or sensor. It can detect the angle deviation of the cam divider caused by wear or load changes, and send a control signal to the motor to control the motor's rotation to compensate for the rotation deviation, thereby improving production efficiency. Moreover, the tooling is equipped with an identification chip for automatically identifying the tooling type. The cam divider mounting plate is equipped with a card reader, which is connected to the control unit to automatically obtain the work type and adjust the parameters. In this way, the rotary work platform can be quickly deployed on different production lines or switch between different tooling types on the same production line as needed.

[0017] In addition, the workstation and tooling are fixedly installed by electromagnets, and the control terminals of the electromagnets are connected to the control unit, making replacement more convenient. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the rotary worktable of this utility model;

[0019] Figure 2 This is an exploded view of the rotary worktable of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the rotating disk of this utility model;

[0021] Figure 4 This is a schematic diagram of the bottom surface of the tooling of this utility model;

[0022] Figure 5 This is a structural schematic diagram of the front of the tooling of this utility model;

[0023] The reference numerals in the attached figures include:

[0024] Cam divider 1;

[0025] Cam divider mounting plate 2;

[0026] Rotating disk 3;

[0027] Angle detection device 31;

[0028] Motor 4;

[0029] Tooling 5;

[0030] 51. Electromagnet; 52. Identification chip; 53. Slot; 54. Guide chamfer; 55. Anti-misalignment post; 56. Bottom fixing strip;

[0031] Sensor assembly 6;

[0032] Mounting bracket 61;

[0033] Main sensor 621; Auxiliary sensor 622;

[0034] Sensor 62;

[0035] First paragraph 611; Second paragraph 612; Third paragraph 613;

[0036] Workstation 7;

[0037] Tooling mounting slot 71; first through hole 72. Detailed Implementation

[0038] The specific embodiments of this utility model are further described below with reference to the accompanying drawings. The scope of protection of this utility model is not limited to the description of the following embodiments.

[0039] like Figure 1 and Figure 2 As shown, this application provides a rotary work platform, including a control unit, a cam divider 1, a cam divider mounting plate 2, a rotary disk 3, a motor 4 (servo motor), at least one tooling 5, and at least two sets of sensor assemblies 6. At least two workstations 7 are arranged at circular intervals on the rotary disk 3 (e.g., ...). Figure 3 As shown, fixture 5 is installed on the workstation and is used to fix the workpiece for assembly, processing, and inspection production processes. In a preferred embodiment of this application, the rotary work platform includes eight workstations 7, evenly distributed on the rotary disk 3. The rotary disk 3 rotates the distance of one workstation 7 each time, thus ensuring that after each fixture 5 is removed, another fixture 5 is provided to fill the gap. Obviously, fewer or more workstations 7 can be set.

[0040] The cam divider 1 is mounted on the cam divider mounting plate 2. The motor 4 is connected to the input shaft of the cam divider 1, and the output shaft of the cam divider 1 is connected to the rotary disk 3. The control unit is connected to the motor 4 and drives the cam divider 1 to rotate the rotary disk 3. The rotary disk 3 drives the workstation 7 to rotate. The cam divider mounting plate 2 and the rotary disk 3 are arranged in parallel. The motor 4 and at least two sets of sensor assemblies 6 are located between the cam divider mounting plate 2 and the rotary disk 3. At least two workstations 7 correspond one-to-one with at least two sets of sensor assemblies 6 along the thickness direction of the rotating work platform. The sensor assembly 6 includes at least one sensor 62. At least one sensor 62 is connected to the control unit. The sensor 62 sends a signal to the control unit. The control unit receives the signal from the sensor 62 and sends a control signal to the motor 4 to control the rotation of the motor 4, thereby changing the dwell time, rotation angle, and rotation speed of the cam divider 1 and improving the operating efficiency of the rotary worktable.

[0041] The sensor assembly 6 also includes a mounting bracket 61 fixed on the cam divider mounting plate 2, at least one sensor 62 mounted on the mounting bracket 61 and spaced apart from the cam divider, and at least one sensor 62 located below each station 7 for detecting the status of the workpiece at station 7.

[0042] Preferably, the cam divider 1 of this application has a bidirectional feedback control function.

[0043] like Figure 1 and Figure 2 As shown, the rotary disk 3 is also equipped with an angle detection device 31, which is located at the rotation center of the rotary disk 3. At least one workstation 7 surrounds the angle detection device 31 in a circle. The control unit is connected to the angle detection device 31. The angle detection device 31 sends a signal to the control unit, which receives the signal and sends a control signal to the motor 4 to control the rotation of the motor 4. The angle detection device 31 and at least one workstation 7 are located on the side of the rotary disk 3 facing away from the cam divider mounting plate 2. The angle detection device 31 is connected to the control unit. When the cam divider 1 deviates in angle due to wear or load changes, the angle detection device 31 transmits the deviation information to the control unit. The control unit controls the actuator (including the motor 4) to correct the angle deviation, thereby achieving real-time compensation for rotational deviation and completing bidirectional feedback control. The device has higher accuracy and does not require manual correction of the rotational angle deviation of the cam divider 1, making it convenient, simple, and improving production efficiency.

[0044] The angle detection device 31 can be, but is not limited to, a high-precision angle encoder; the control unit can be, but is not limited to, a PLC (Programmable Logic Controller), for example, a microcontroller; and the sensor 62 can be, but is not limited to, an eddy current displacement sensor. The angle encoder measures the real-time position and speed of the motor with high precision and feeds this data back to the control unit, enabling the control unit to compare the actual speed of the motor with the target speed, determine if there is an angle error, and adjust the energy output to the motor based on the angle error, thereby adjusting the rotation angle of the rotating disk 3 by adjusting the motor's rotation speed. Specifically, when the multi-station rotating disk 3 performs intermittent indexing rotation, the angle encoder converts the angle change of the multi-station rotating disk 3 into a pulse signal for output, feeding the signal pulse back to the control unit. Based on the pulse signal, the control unit can obtain the actual rotation angle of the rotating disk 3, compare it with the planned rotation angle, measure the motion error of the multi-station rotating disk 3, and control the actuator to perform actions, including but not limited to changing the rotation speed, rotation time, and tilt angle of the motor 4, to adjust the rotation angle of the rotating disk 3. Furthermore, as the multi-station rotary table 3 rotates one revolution, the position change of station 7 is measured by an eddy current displacement sensor, indirectly measuring the repeatability error of the multi-station rotary table 3 as an auxiliary detection. When the control unit detects a change in the position of station 7 based on the eddy current displacement sensor, it indicates a problem with the angle adjustment of the rotary table 3 based on the angle detection device 31, or a problem with the detection result of the eddy current displacement sensor. The control unit then issues an alarm signal to alert the user.

[0045] Preferably, the rotary table of this application has a dynamic adjustment mechanism.

[0046] In a first embodiment of the sensor assembly 6, the sensor assembly 6 includes a sensor 62 for detecting the state of the workpiece on the workstation 7 corresponding to the thickness direction of the rotating work platform. Based on the workpiece state detected by the sensor 62, the dwell time, rotation angle and rotation speed of the cam divider 1 are changed to improve the operating efficiency of the rotating worktable.

[0047] The workpiece status can include whether the workpiece is in position, whether there is a workpiece in the fixture 5, whether the workpiece matches the fixture 5, and whether the workpiece is damaged. For example, while the previous station 7 is working, the sensor 62 of the next station 7 is determining whether there is a workpiece in the station 7 corresponding to the sensor 62. If there is no workpiece in the next station 7, the motor 4 accelerates and rotates directly to the station 7 with a workpiece, switching the servo motor 4 to high-speed jump mode or deceleration jump mode, thereby automatically controlling the rotation speed and dwell time of the cam divider 1 and improving the operating efficiency of the rotary table.

[0048] For example, in one embodiment, the workpieces at the eight workstations are of different types. Only one detection mechanism, assembly mechanism, or robotic arm (the robotic arm is an operating installation mechanism used for assembling workpieces; of course, it may not be a robotic arm in the strict sense) is set outside the eight workstations. At this time, when the sensor adjacent to the robotic arm detects that there is no workpiece at the corresponding workstation 7, the rotary disk 3 accelerates so that the workstation 7 at that position passes the robotic arm and directly rotates to the next workstation 7 with a workpiece, saving assembly time.

[0049] In another embodiment, the workpieces at the eight workstations are the same, and the eight workstations correspond to eight different robotic arms. The eight robotic arms are used to assemble eight different parts, and in this case, the dynamic adjustment mechanism is not activated.

[0050] Preferably, the sensor matrix of the rotary table in this application has a topology optimization function.

[0051] like Figure 1 and Figure 2 As shown, in the second embodiment of the sensor assembly 6, the sensor assembly 6 includes two sensors 62 for secondary detection of the workpiece state, avoiding the risk of misjudgment by the sensor 62 due to interference from the external environment, and improving the detection accuracy of the sensor assembly 6.

[0052] For example, such as Figure 2 As shown, the two sensors 62 are a main sensor 621 and an auxiliary sensor 622, respectively. The main sensor 621 is used to detect the state of the workpiece on the workstation 7 corresponding to the thickness direction of the rotating work platform. The auxiliary sensor 622 can perform secondary detection of the workpiece state and other auxiliary detection to improve accuracy and avoid missing or wrong parts.

[0053] For example, each workstation 7 has the same type of workpiece, each workstation 7 corresponds to one robotic arm, and each robotic arm is used to install a different type of part.

[0054] When only the main sensor 621 is set, for example, the main sensor 621 is sensor A. Sensor A is used to detect the assembly of part a on the workpiece at the corresponding position. If sensor A has a problem, it may cause the detection to fail. The robotic arm corresponding to sensor A will not move, the workpiece will not be equipped with part a, and will rotate to the next station 7 to assemble other parts, resulting in the workpiece being missing parts and not being detected.

[0055] After setting up an auxiliary sensor 622, it is used for secondary detection of the status of the workpiece at the corresponding workstation 7. It can also be used to detect whether the robotic arm corresponding to the workpiece is moving, whether the part at that position is assembled on the workpiece, or whether the part assembly position is appropriate, etc., so as to improve the accuracy of the device detection and avoid the situation of missing or wrong parts due to the failure or non-operation of the main sensor 621.

[0056] Of course, in a less desirable embodiment, the auxiliary sensor 622 may not be provided. The main sensor 621 may have the functions of detecting whether the tooling has a workpiece, whether the robotic arm corresponding to the workpiece is moving, whether the part at that position is assembled onto the workpiece, or whether the part is properly assembled. This is also possible and within the scope of protection of this application.

[0057] Furthermore, the sensor 62 is a fiber optic sensor, an infrared sensor, or a proximity sensor, etc. In a preferred embodiment of this application, the sensor 62 is a fiber optic sensor.

[0058] Preferred, such as Figure 4 As shown, a recognition chip 52 is provided at the bottom of the tooling 5, and a card reader is provided on the cam divider mounting plate 2. The card reader can also be mounted on the mounting bracket 61. The card reader is connected to the control unit. The recognition chip 52 is used to automatically identify the type of tooling 5 and match preset parameters according to the type of tooling 5. For example, the recognition chip 52 stores the type information of tooling 5 and the workpiece information that matches tooling 5. When the control unit is powered on, or before starting the rotating work platform, or after changing tooling 5, the control unit identifies the information in the chip 52 through the card reader and matches preset parameters according to the type information of tooling 5 and / or workpiece information, including but not limited to the rotation angle and rotation speed of the rotary disk 3. The motor 4 is controlled to drive the rotary disk 3 to rotate at the specified angle and speed each time. In this way, it is not necessary to manually set preset parameters according to the type of tooling 5 being changed, saving time and improving production efficiency.

[0059] Furthermore, the identification chip 52 may be, but is not limited to, an RFID chip.

[0060] Preferred, such as Figure 1 and Figure 2 As shown, the mounting bracket 61 has a "U"-shaped structure, including a first section 611, a second section 612, and a third section 613 connected by bending. The first section 611 is fixedly connected to the cam divider mounting plate 2, and the third section 613 is fixedly connected to at least one sensor 62. The second section 612 may be, but is not limited to, an arc-shaped structure or a linear structure. At least one sensor 62 corresponds to and is spaced apart from the workstation 7. Of course, as... Figure 1 As shown, in order to reduce the size of the rotary table, at least one sensor assembly 6 corresponding to station 7 may not be provided with a mounting bracket 61, and at least one sensor 62 may be provided on the motor 4.

[0061] Preferred, such as Figure 3 and Figure 4As shown, workstation 7 and fixture 5 are fixedly installed via electromagnet 51. The control terminals of electromagnet 51 are connected to the control unit. At least one electromagnet 51 is provided on the bottom of fixture 5 (i.e., the side facing workstation 7) and / or on the side of workstation 7 facing fixture 5. Installation via electromagnet 51 facilitates fixture 5 replacement. When replacing fixture 5, the system can automatically release the electromagnet's adsorption function at the bottom of the fixture via a fixture replacement command. After installation, the system interface can be clicked to re-adsorb the electromagnet, making replacement more convenient. After fixture 5 is replaced, the control unit can read the information from the identification chip 52 on fixture 5 using a card reader and adjust the pre-screening parameters. These preset parameters include, but are not limited to, the rotation angle and speed of the rotary disk 3. In other embodiments, workstation 7 and fixture 5 can also be connected by snap-fit ​​installation, screw installation, riveting, or welding.

[0062] Alternatively, instead of electromagnet 51, at least one strong magnet with opposite magnetic properties can be provided on the bottom of the tooling 5 (that is, the side facing the workstation 7) and the side of the workstation 7 facing the tooling 5, which can be manually disassembled and replaced.

[0063] Furthermore, such as Figure 3 As shown, station 7 includes a tooling mounting slot 71, and tooling 5 is installed in the tooling mounting slot 71. The tooling mounting slot 71 is provided with a first through hole 72, and at least one sensor 62 corresponds to the first through hole 72. When installing tooling 5, the tooling mounting slot 71 facilitates the positioning of tooling 5. Electromagnet 51 on station 7 is located in the tooling mounting slot 71, and tooling 5 is fixedly installed in the tooling mounting slot 71 by electromagnet 51.

[0064] Preferred, such as Figure 5 As shown, the tooling 5 is provided with at least one slot 53 for installing workpieces. The workpieces are installed in the slot 53 to position them. The slot 53 is provided with a second through hole, and at least one sensor 62 corresponds to the second through hole.

[0065] Furthermore, in this embodiment, as Figure 5 As shown, the fixture 5 has two slots 53, and two workpieces are respectively installed in the two slots 53 for positioning. Both slots 53 are provided with guide chamfers 54 to correct workpiece positioning deviations and guide the workpieces to be installed in the correct positions. Furthermore, at least two anti-misalignment posts 55 are provided between the two slots 53. The anti-misalignment posts 55 can prevent the two workpieces from being placed in the wrong direction and also prevent the workpieces from tipping over during rotation. In this embodiment, the two anti-misalignment posts 55 are square prisms.

[0066] Since the shapes of workpieces vary, the shapes of tooling 5 and slot 53 can also take various forms.

[0067] Preferred, such as Figure 1 and Figure 2 As shown, the rotary disk 3 and the cam divider mounting plate 2 are circular, rectangular, or other shaped flat plate structures. In this embodiment, the rotary disk 3 and the cam divider mounting plate 2 are circular structures. This saves space and has a good aesthetic appeal.

[0068] Preferably, the bottom of the cam divider mounting plate 2, that is, the side facing away from the rotating disk 3, is provided with a support and fixing member, which is used to fix the rotating platform of this application to other device structures. Figure 1 and Figure 2 As shown, this application has a horizontally arranged bottom fixing strip 56.

[0069] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "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 during use. They are only for ease of description and do not indicate that the device or component referred to must have a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating relative importance.

[0070] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A rotary work platform, comprising a control unit, a cam divider (1), a cam divider mounting plate (2), a rotary disk (3), a motor (4), and at least one tooling (5), wherein at least two workstations (7) are arranged at circular intervals on the rotary disk (3), and the tooling (5) is mounted on the workstations (7) for fixing workpieces; the cam divider (1) is mounted on the cam divider mounting plate (2), the motor (4) is connected to the input shaft of the cam divider (1), the output shaft of the cam divider (1) is connected to the rotary disk (3), and the control unit is connected to the motor (4). Its features are, The system includes at least two sets of sensor assemblies (6) corresponding to at least two workstations (7). Each sensor assembly (6) includes at least one sensor (62). The rotary disk (3) is also equipped with an angle detection device (31) for detecting the rotation angle deviation of the cam divider (1). The angle detection device (31) is located at the rotation center of the rotary disk (3). The control unit is connected to the angle detection device (31), and the sensor (62) is connected to the control unit. The angle detection device (31) and / or the sensor (62) send signals to the control unit. The control unit receives the signals from the angle detection device (31) and / or the sensor (62) and sends control signals to the motor (4) to control the rotation of the motor (4). The tooling (5) is equipped with an identification chip (52), and the cam divider mounting plate (2) is equipped with a card reader, which is connected to the control unit.

2. The rotary working platform according to claim 1, characterized in that, The workstation (7) and the tooling (5) are fixedly installed by an electromagnet (51), and the control terminal of the electromagnet (51) is connected to the control unit.

3. The rotary working platform according to claim 1, characterized in that, The cam divider mounting plate (2) and the rotary disk (3) are arranged in parallel. The motor (4) and the sensor assembly (6) are located between the cam divider mounting plate (2) and the rotary disk (3). A mounting bracket (61) is fixedly installed on the cam divider mounting plate (2). The sensor (62) is installed on the mounting bracket (61) and is spaced apart from the cam divider.

4. The rotary working platform according to claim 1, characterized in that, The workstation (7) includes a tooling mounting slot (71), a tooling (5) is installed in the tooling mounting slot (71), a first through hole (72) is provided in the tooling mounting slot (71), and at least one sensor (62) corresponds to the first through hole (72).

5. The rotary working platform according to claim 4, characterized in that, The tooling (5) is provided with at least one slot (53) for installing workpieces. The slot (53) is provided with a second through hole, and at least one sensor (62) corresponds to the second through hole.

6. The rotary working platform according to claim 1, characterized in that, The sensor assembly (6) includes two sensors (62), namely a main sensor (621) and an auxiliary sensor (622). The main sensor (621) is used to detect the status of the workpiece at the corresponding workstation (7). The auxiliary sensor (622) is used to detect the status of the workpiece at the corresponding workstation (7) for a second time, and / or to detect whether the part is assembled on the workpiece, and / or whether the part is properly assembled.

7. The rotary working platform according to claim 2, characterized in that, The workstation (7) includes a tooling mounting slot (71). At least one electromagnet (51) is provided on the bottom of the tooling (5) and / or on the side of the tooling mounting slot (71) facing the tooling (5). The tooling (5) is fixedly installed in the tooling mounting slot (71) by the electromagnet (51).

8. The rotary working platform according to claim 1, characterized in that, The identification chip (52) is an RFID chip.

9. The rotary working platform according to claim 1, characterized in that, The tooling (5) is provided with two slots (53), and two workpieces are respectively installed in the two slots (53). The two slots (53) are respectively provided with guide chamfers (54), and at least two anti-misalignment posts (55) are provided between the two slots (53).

10. The rotary working platform according to claim 1, characterized in that, The angle detection device (31) is an angle encoder; and / or the sensor (62) is an optical fiber sensor, an infrared sensor, a proximity sensor or an eddy current displacement sensor.

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