Signal transmission device suitable for outdoor numerical control machine tool

Abstract

The utility model relates to the technical field of numerical control machine tools, and discloses a signal transmission device suitable for an outdoor numerical control machine tool, a processing machine comprises a main shaft turntable, a conducting ring connected with the main shaft turntable and used for synchronously moving with the main shaft turntable; the pipeline machining device further comprises a control cabinet, the control cabinet is located on one side of a whole formed by combining the machining machine and the machined pipeline, the control cabinet and the conducting ring are electrically connected through an input cable, and the control cabinet is used for controlling the machining state of the machining machine. The processing machine further comprises a conducting ring which is connected with the main shaft rotating disc and is used for synchronously moving with the main shaft rotating disc; the conducting ring is electrically connected with the spindle servo motor through a first output cable, the conducting ring is electrically connected with the radial motion machining mechanism through a second output cable, and the conducting ring is electrically connected with the radial motion machining mechanism through a third output cable. The service life of the signal transmission device can be prolonged.

Description

Technical Field

[0001] This utility model relates to the field of CNC machine tool technology, and specifically to a signal transmission device suitable for outdoor CNC machine tools. Background Technology

[0002] As a non-renewable resource, oil production naturally declines with increasing oil and gas extraction. Many early-developed oil and gas fields have gradually been depleted, resulting in a large number of abandoned or undeveloped wells. These wells were originally located in remote areas, but in recent years, with the rapid advancement of urbanization, many of these former desolate well sites have been gradually incorporated into new urban planning. The prerequisite for planned development and construction is to ensure the safety of these abandoned wells. Specifically, this involves cutting the well casing at a certain depth below ground level and re-machined the remaining section with tapered round threads according to API standards, then installing matching sealing components. The sealed wellhead must meet certain pressure requirements, which necessitates high precision machining of the newly manufactured threads.

[0003] To meet the high machining accuracy requirements of newly manufactured threads, existing technology provides an outdoor machining equipment, such as the outdoor machining equipment described in patent application number CN202111146080.8. Figure 1 As shown, the elevator 22 and the mover 23 are connected by a cable, which is exposed as can be seen from the figure. The brush unit is used to transmit signals and power to the mover and elevator. The axis of the brush unit is coaxial with the axis of the rotary bed to achieve synchronous rotation between the brush unit and the rotary bed. However, in actual use, due to the frequent rotation and friction of the rotary bed, brushes and other rotating units, the signal transmission devices, including the brush unit and cable, will experience wear and aging during long-term use. This will not only cause signal attenuation, distortion or interruption during transmission, but also make the movement and lifting of the tool inconsistent with the predetermined machining program. As a result, the parts cannot be machined according to the precise trajectory, leading to substandard dimensional and shape accuracy of the machined parts, and deviations in parameters such as thread pitch and tooth angle. Moreover, it will reduce the service life of the signal transmission device and increase its replacement cost. Utility Model Content

[0004] This basic solution aims to provide a signal transmission device suitable for outdoor CNC machine tools to solve the technical problem of short service life of signal transmission devices.

[0005] The signal transmission device suitable for outdoor numerical control machine tools comprises a pipeline to be processed and a processing machine, the processing machine comprises a cutter mechanism, a main shaft rotating disc, a main shaft servo motor, a radial motion processing mechanism, an axial motion processing mechanism and a base, the base is fixedly installed on the side wall of the pipeline to be processed in a ring shape, and the cutter mechanism is used for processing the pipeline to be processed; the main shaft rotating disc is movably connected with the base; the main shaft servo motor is fixedly installed on the outside of the base and connected with the main shaft rotating disc, and is used for driving the main shaft rotating disc to rotate; the radial motion processing mechanism is installed on the main shaft rotating disc and used for driving the cutter mechanism to process the pipeline to be processed along the radial direction; the axial motion processing mechanism is installed on the radial motion processing mechanism and connected with the cutter mechanism, and is used for driving the cutter mechanism to process the pipeline to be processed along the axial direction; the signal transmission device further comprises a control cabinet, the control cabinet is located on one side of the whole formed by the combination of the processing machine and the pipeline to be processed, the control cabinet is electrically connected with the electrically conductive ring through an input cable, and the control cabinet is used for controlling the processing state of the processing machine; the processing machine further comprises an electrically conductive ring connected with the main shaft rotating disc and used for synchronous movement with the main shaft rotating disc; the electrically conductive ring is electrically connected with the main shaft servo motor through a first output cable, the electrically conductive ring is electrically connected with the radial motion processing mechanism through a second output cable, and the electrically conductive ring is electrically connected with the radial motion processing mechanism through a third output cable; wherein the first output cable, the second output cable and the third output cable move synchronously with the main shaft rotating disc.

[0006] Advantages: Compared with the prior art, the basic scheme significantly improves the stability and reliability of signal transmission, prolongs the service life of the signal transmission device, improves the processing precision, optimizes the equipment structure, and reduces the maintenance difficulty, thereby enhancing the overall performance of the whole numerical control machine tool system, and is particularly suitable for pipeline processing tasks in complex outdoor environments.

[0007] Specifically, first, the existing signal transmission device (such as a brush unit and a cable) is exposed to the external environment and is easily affected by wear, aging and other problems, resulting in signal transmission problems such as attenuation, distortion or interruption. The basic scheme avoids the signal transmission problems caused by frequent rotation and friction of the traditional brush unit by adopting the design of the electrically conductive ring moving synchronously with the main shaft rotating disc.

[0008] Secondly, through the design of the electrically conductive ring, the first output cable, the second output cable and the third output cable are integrally connected, the first output cable, the second output cable and the third output cable move synchronously with the main shaft rotating disc, the influence of the external environment on the signal transmission device is reduced, the signal transmission problems caused by frequent rotation and friction of the output cable are avoided, the service life of the output cable is prolonged, and the replacement cost is reduced.

[0009] Meanwhile, the design of the electrically conductive ring moving synchronously with the spindle disc is adopted, and the electrical connection between the control cabinet and the electrically conductive ring is controlled to realize the centralized control of the processing machine. This design not only optimizes the signal transmission path, but also reduces the use of external cables, making the entire device structure more compact and more adaptable, especially suitable for use in complex outdoor environments.

[0010] Finally, the design of the electrically conductive ring moving synchronously with the spindle disc is combined with the integrated control of the control cabinet and the processing machine, and the control cabinet and the processing machine are operated separately. The control cabinet is located on one side of the whole formed by the combination of the processing machine and the processed pipeline, and the input cable is used for electrical connection between the control cabinet and the electrically conductive ring. This not only improves the stability of signal transmission, but also enhances the overall performance of the entire numerical control machine tool system. The system can more efficiently complete the processing task, reduce downtime caused by signal transmission problems, and thus improve production efficiency.

[0011] Preferably, it also includes a bearing, the inner ring of the bearing is connected with the base, and the outer ring of the bearing is connected with the spindle disc, for the relative movement of the spindle disc relative to the base.

[0012] Beneficial effect: The design of the bearing makes the movement of the spindle disc more flexible and can adapt to different processing conditions and load changes. This design improves the adaptability and reliability of the equipment in complex environments, especially in outdoor pipeline processing, where the equipment needs to face various harsh conditions. The use of bearings can ensure the stable operation of the equipment.

[0013] Preferably, the electrically conductive ring includes a movable ring and a fixed ring, and the movable ring and the fixed ring are electrically connected. The movable ring is connected with the spindle disc and moves synchronously with the spindle disc. The movable ring is electrically connected with the first output cable, the second output cable and the third output cable respectively. The fixed ring is fixedly installed on the inner ring of the bearing and is close to the base. The fixed ring is electrically connected with the input cable.

[0014] Beneficial effect: The movable ring of the electrically conductive ring moves synchronously with the spindle disc, and the fixed ring is fixed on the inner ring of the bearing. This structure ensures the stability and reliability of signal transmission and reduces the loss of signals in the transmission process. Secondly, through the design of the electrically conductive ring, the key components of signal transmission (such as the movable ring and the fixed ring) are integrated in a relatively closed and stable structure, reducing the influence of the external environment on the signal transmission device, thereby prolonging its service life and reducing replacement costs.

[0015] Preferably, the first output cable includes a first encoder output cable and a first power output cable; the second output cable includes a second encoder output cable and a second power output cable; the second output cable includes a second encoder output cable and a second power output cable; and the third output cable includes a third encoder output cable and a third power output cable.

[0016] Beneficial effects: First, the separate arrangement of the encoder output cable and the power output cable can effectively avoid the mutual interference between signal transmission and power transmission. The encoder output cable is used to transmit feedback signals such as position and speed, while the power output cable is used to transmit power to drive the motor. This separate design ensures the stability and high precision of signal transmission, while avoiding the influence of electromagnetic interference in power transmission on signals. Second, in complex outdoor environments, electromagnetic interference is a common problem. The separate arrangement of the encoder output cable and the power output cable can reduce the influence of electromagnetic interference on signal transmission. Moreover, the separate design of the encoder output cable and the power output cable facilitates fault diagnosis and maintenance of the system. If there is a problem with signal transmission, it can be quickly determined whether it is a problem with the encoder signal or a problem with power transmission, thereby improving maintenance efficiency and reducing downtime. Finally, this separate cable layout design makes the system more flexible in expansion or upgrade. It should be understood that the encoder output cable usually transmits low-voltage, high-precision signals, while the power output cable transmits high-voltage, high-current power signals. Separate arrangement can ensure that the encoder signal is not affected by electromagnetic interference from the power signal during transmission, thereby improving the integrity and transmission quality of the signal.

[0017] Preferably, the input cable includes an encoder input cable and a power input cable; the conductive ring includes an encoder output end, a power output end, an encoder input end and a power input end; the encoder input end is in communication connection with the encoder output end, and the power input end is in electrical connection with the power output end; the encoder input cable is in electrical connection with the encoder input end, and the power input cable is in electrical connection with the power input end; the first, second and third encoder output cables are respectively in electrical connection with the encoder output end; and the first, second and third power output cables are respectively in electrical connection with the power output end.

[0018] Beneficial effects: First, by dividing the input cable into an encoder input cable and a power input cable, and simultaneously providing an encoder input end, a power input end, an encoder output end and a power output end on the conductive ring, efficient transmission and distribution of signals and power can be achieved. This design ensures that the encoder signal and the power signal do not interfere with each other during transmission, ensuring the stability of the signal and the reliability of the power. Second, the input and output of signals and power are integrated on the conductive ring and distributed through internal connections, which can significantly simplify external wiring. This design reduces the exposed length and number of cables, reduces the risk of failure due to cable wear, aging or damage, and also reduces maintenance workload and cost.

[0019] Preferably, a three-in-one driver is fixedly installed in the control cabinet, and the three-in-one driver is in electrical connection with the conductive ring through the input cable.

[0020] Benefits: Firstly, the three-in-one drive integrates multiple drive functions into one module, reducing the number and volume of drives required within the control cabinet. This integrated design makes the control cabinet structure more compact, saving space, while also reducing the overall weight of the control cabinet, facilitating installation and transportation. Secondly, by directly connecting the three-in-one drive with the conductive ring, the number of intermediate connection links and cables is reduced. This simplified wiring method reduces the risk of failure caused by poor cable connection, loose contact, or cable aging, improving the reliability of the system. Finally, the direct connection between the three-in-one drive and the conductive ring reduces the length and complexity of the signal transmission path, thereby reducing signal attenuation and interference during transmission. This design ensures efficient transmission of control signals and power signals, improving the response speed and stability of the system.

[0021] Preferably, the model of the three-in-one drive is S08-SMD23B20-00.

[0022] Preferably, the processing machine includes a wire harness integrated housing, the first encoder output cable, the second encoder output cable, the third encoder output cable, the first power output cable, the second power output cable, and the third power output cable are all arranged inside the wire harness integrated housing, and all adopt a concealed wiring arrangement.

[0023] Benefits: Firstly, the wire harness integrated housing provides physical protection for the cables, avoiding damage from external factors such as mechanical damage, chemical corrosion (such as rainwater, salt spray, etc.), ultraviolet radiation, and animal gnawing in outdoor environments. This protection significantly extends the service life of the cables. At the same time, the concealed wiring arrangement hides the cables inside the housing, reducing the possibility of electromagnetic interference from external environments. This design also helps to reduce mutual interference between different cables, especially between encoder signal cables and power cables, thereby improving the stability and accuracy of signal transmission. Finally, by integrating the cables inside the wire harness housing, the complexity of external wiring is reduced, and the risk of failure caused by loose cables, poor contact, or wear and tear is reduced. This integrated wiring method makes the connection of the cables more stable, improving the overall reliability of the system.

[0024] Preferably, the model of the conductive ring is DHK038-22-003. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a schematic diagram of the prior art structure;

[0026] Figure 2 is a front view of the processing machine of the embodiment;

[0027] Figure 3This is a schematic diagram of the structure of a signal transmission device suitable for outdoor CNC machine tools, as shown in the embodiment.

[0028] Figure 4 This is a circuit connection diagram of a signal transmission device suitable for outdoor CNC machine tools, as shown in the embodiment. Detailed Implementation

[0029] The markings in the accompanying drawings include:

[0030] 1. Base, 2. Spindle turntable, 3. Radial motion machining mechanism, 4. Axial motion machining mechanism, 5. Tool mechanism, 6. Pipe to be processed, 7. Spindle servo motor, 8. Radial servo motor, 9. Axial servo motor, 10. Machining machine, 11. Conductive ring, 12. First encoder output cable, 13. Second encoder output cable, 14. Third encoder output cable, 15. First power output cable, 16. Second power output cable, 17. Third power output cable, 18. Encoder input cable, 19. Power input cable, 20. Control cabinet, 21. Three-in-one driver, 22. Lifter, 23. Movers.

[0031] Example

[0032] like Figure 2 and 3 As shown, this embodiment provides a signal transmission device suitable for outdoor CNC machine tools, including a pipe 6 to be processed and a processing machine 10. The processing machine 10 includes a tool mechanism 5, a spindle turntable 2, a spindle servo motor 7, a radial motion processing mechanism 3, an axial motion processing mechanism 4, and a base 1. The base 1 is fixedly installed in a ring shape on the side wall of the pipe 6 to be processed. The tool mechanism 5 is used to process the pipe 6. The spindle turntable 2 is movably connected to the base 1. The spindle servo motor 7 is fixedly installed on the outside of the base 1 and connected to the spindle turntable 2, used to drive the spindle turntable 2 to rotate. The radial motion processing mechanism 3 is installed on the spindle turntable 2 and used to drive the tool mechanism 5 to move radially to process the pipe 6. The axial motion processing mechanism 4 is installed on the radial motion processing mechanism 3 and connected to the tool mechanism 5, used to drive the tool mechanism 5 to move axially to process the pipe 6.

[0033] Specifically, the radial motion processing mechanism 3 comprises a radial servo motor 8 and a first horizontal sliding table. The radial servo motor 8 is electrically connected with the first horizontal sliding table, the first horizontal sliding table is in sliding connection with the main shaft disc 2, and the radial servo motor 8 drives the first horizontal sliding table to move horizontally on the main shaft disc 2, so as to indirectly drive the blade to process the processed pipeline in the radial direction. The axial motion processing mechanism 4 comprises an axial servo motor 9, a vertical column and a first vertical sliding plate. The vertical column is fixedly installed on the first horizontal sliding table, the axial servo motor 9 is fixedly installed on the vertical column, the axial servo motor 9 is connected with the first vertical sliding plate, the first vertical sliding plate is installed on the outer side wall of the vertical column, the first vertical sliding plate is in sliding connection with the vertical column, and the first vertical sliding plate is close to the processed pipeline, and the axial servo motor 9 is used to drive the first vertical sliding plate to slide on the vertical column. In the embodiment, the tool holder is fixedly installed on the first vertical sliding plate and faces away from the vertical column and is close to the processed pipeline. The blade is connected with the tool holder, and the cutting direction of the blade is close to the processed pipeline. The axial servo motor 9 drives the first vertical sliding plate to slide up and down, so as to indirectly drive the blade to process the processed pipeline in the axial direction.

[0034] The signal transmission device suitable for the outdoor numerical control machine tool further comprises a bearing, an inner ring of the bearing is connected with the base 1, an outer ring of the bearing is connected with the main shaft disc 2, and the bearing is used to make the main shaft disc 2 relatively move relative to the base 1. The outer ring of the bearing is designed as a gear structure. The base 1 is in a stationary state, and the main shaft disc 2 can be in a rotating state. The bearing adopts a “crossed roller bearing”, which has good axial and radial load capacity.

[0035] As shown in Figure 4 The conductive ring 11 comprises a movable ring and a fixed ring, the movable ring and the fixed ring are electrically connected, the movable ring is connected with the main shaft disc 2 and moves synchronously with the main shaft disc 2, the movable ring is electrically connected with the first output cable, the second output cable and the third output cable respectively, the fixed ring is fixedly installed on the inner ring of the bearing and is close to the base 1, and the fixed ring is electrically connected with the input cable. According to the number of channels of the required transmission signal, a plurality of contact grooves and contact brushes made of precious metal materials are distributed in the axial direction of the shaft column surface between the movable ring and the fixed ring. The contact groove and the contact brush always keep sliding contact, so that signal transmission under the condition that one end rotates and the other end does not rotate can be realized. The fixed ring of the conductive ring 11 is fixed on the inner ring of the bearing of the main shaft disc 2 and is integrally kept stationary with the base 1, the movable ring of the conductive ring 11 is connected with the main shaft disc 2 and moves synchronously with the main shaft disc 2. The input cable is connected with the fixed ring of the conductive ring 11, and the relative position is unchanged, the first output cable is connected with the movable ring of the conductive ring 11, and the relative position is also kept unchanged, so that the communication transmission problem between the control cabinet 20 and the processing machine 10 is solved. The model of the conductive ring 11 is DHK038-22-003.

[0036] Specifically, as shown in Figure 4The first output cable includes a first encoder output cable 12 and a first power output cable 15; the second output cable includes a second encoder output cable 13 and a second power output cable 16; the second output cable includes a second encoder output cable 13 and a second power output cable 16; the third output cable includes a third encoder output cable 14 and a third power output cable 17. The input cable includes an encoder input cable 18 and a power input cable 19; the conductive ring 11 includes an encoder output end, a power output end, an encoder input end and a power input end; the encoder input end is in communication connection with the encoder output end, and the power input end is in electrical connection with the power output end. The encoder input cable 18 is in electrical connection with the encoder input end, and the power input cable 19 is in electrical connection with the power input end. The first encoder output cable 12, the second encoder output cable 13 and the third encoder output cable 14 are respectively in electrical connection with the encoder output end; the first power output cable 15, the second power output cable 16 and the third power output cable 17 are respectively in electrical connection with the power output end. The control cabinet 20 is fixedly installed with a three-in-one driver 21, and the three-in-one driver 21 is in electrical connection with the conductive ring 11 through the input cable. In the embodiment, the model of the three-in-one driver 21 is S08-SMD23B20-00. The processing machine 10 is also fixedly installed with a hand wheel and a warning lamp, and the hand wheel and the warning lamp are respectively in electrical connection with the control cabinet 20.

[0037] The processing machine 10 includes a wire harness integrated shell, and the wire harness integrated shell is fixedly installed on the main shaft turntable 2 and is in communication with the X-axis servo motor, the radial servo motor 8 and the axial servo motor 9, so that the encoder output cable and the power output cable can be connected with the three kinds of servo motors respectively. The first encoder output cable 12, the second encoder output cable 13, the third encoder output cable 14, the first power output cable 15, the second power output cable 16 and the third power output cable 17 are all arranged inside the wire harness integrated shell and are all arranged in a dark wire arrangement.

[0038] In the description of the utility model, it needs to be explained that the terms "upper", "lower", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is used, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation on the utility model.

[0039] In the description of the utility model, still need to explain, unless another explicit provision and limitation, term "arrangement", "installation", "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integral connection, can be mechanical connection, also can be electrical connection, can be direct connection, also can pass through intermediate medium indirectly connect, can be two element internal communication. For ordinary skilled person in the art, can understand the concrete meaning of above-mentioned term in the utility model according to specific circumstances.

[0040] It should be understood that the term "and / or" used herein is only a description of the same field associated object, indicates that there can be three kinds of relations, for example, A and / or B, can indicate: A exists alone, A and B exist simultaneously, B exists alone these three cases. In addition, the character " / " in this paper, generally indicates that the associated object before and after is a kind of "or" relationship.

[0041] Although the subject matter has been described in language specific to structural features and / or methodological acts, it is to be understood that the subject defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are merely exemplary forms of implementing the claims.

[0042] The above is only the embodiment of the utility model, and the well-known specific structure and characteristics of the scheme are not described too much, and the ordinary skilled person in the art knows all the ordinary technical knowledge in the technical field of the utility model before the application date or the priority date, can know all the prior art in the field, and has the ability to apply conventional experimental means before the date, and the ordinary skilled person in the art can improve and implement the scheme under the inspiration given by the present application, some typical well-known structures or well-known methods should not become the obstacle for the ordinary skilled person in the art to implement the present application. It should be pointed out that, for those skilled in the art, without departing from the structure of the utility model, a number of modifications and improvements can be made, which should be regarded as the protection scope of the utility model, which will not affect the effect and practicality of the utility model. The protection scope claimed in the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. A signal transmission device suitable for outdoor numerical control machine tools, comprising a pipe to be processed and a processing machine, the processing machine comprising a cutter mechanism, a main shaft turntable, a main shaft servo motor, a radial motion processing mechanism, an axial motion processing mechanism and a base, the base is fixedly installed on the side wall of the pipe to be processed in a ring shape, and the cutter mechanism is used for processing the pipe to be processed; the main shaft turntable is movably connected with the base; the main shaft servo motor is fixedly installed on the outside of the base and connected with the main shaft turntable, and is used for driving the main shaft turntable to rotate; the radial motion processing mechanism is installed on the main shaft turntable and is used for driving the cutter mechanism to process the pipe to be processed along the radial direction; the axial motion processing mechanism is installed on the radial motion processing mechanism and connected with the cutter mechanism, and is used for driving the cutter mechanism to process the pipe to be processed along the axial direction, characterized in that, The control cabinet is located on one side of the whole formed by the combination of the machining machine and the processed pipeline, and is electrically connected with the conductive ring through an input cable. The machining machine further comprises a conductive ring connected with the main shaft turntable and used for synchronous movement with the main shaft turntable. The conductive ring is electrically connected with the main shaft servo motor through a first output cable, electrically connected with the radial movement machining mechanism through a second output cable, and electrically connected with the radial movement machining mechanism through a third output cable.

2. The signal transmission device for outdoor CNC machine tools according to claim 1, characterized in that, The machining machine further comprises a bearing, the inner ring of which is connected with the base, and the outer ring of which is connected with the main shaft turntable, so as to realize relative movement of the main shaft turntable relative to the base.

3. The signal transmission device for outdoor CNC machine tools according to claim 2, characterized in that, The conductive ring comprises a movable ring and a fixed ring, and the movable ring is electrically connected with the fixed ring.

4. The signal transmission device for outdoor CNC machine tools according to claim 1, characterized in that, The first output cable comprises a first encoder output cable and a first power output cable; the second output cable comprises a second encoder output cable and a second power output cable; and the third output cable comprises a third encoder output cable and a third power output cable. The input cable comprises an encoder input cable and a power input cable; the conductive ring comprises an encoder output end, a power output end, an encoder input end and a power input end; the encoder input end is communicatively connected with the encoder output end, and the power input end is electrically connected with the power output end.

5. The signal transmission device for outdoor CNC machine tools according to claim 4, characterized in that, The encoder input cable is electrically connected with the encoder input end, and the power input cable is electrically connected with the power input end. The first encoder output cable, the second encoder output cable and the third encoder output cable are respectively electrically connected with the encoder output end. The first power output cable, the second power output cable and the third power output cable are respectively electrically connected with the power output end. The control cabinet is internally fixedly installed with a three-in-one driver, which is electrically connected with the conductive ring through the input cable.

6. The signal transmission device for outdoor CNC machine tools according to claim 1, characterized in that, The model of the three-in-one driver is S08-SMD23B20-00.

7. The signal transmission device for outdoor CNC machine tools according to claim 6, characterized in that, The machining machine comprises a wire harness integrated shell, and the first encoder output cable, the second encoder output cable, the third encoder output cable, the first power output cable, the second power output cable and the third power output cable are all arranged inside the wire harness integrated shell and are all arranged in the form of concealed wiring.

8. The signal transmission device for outdoor CNC machine tools according to claim 4, characterized in that, The model of the conductive ring is DHK038-22-003.

9. The signal transmission device for outdoor CNC machine tools according to claim 1, characterized in that, ​

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