DD turntable integrated with multi-channel oil path and gas path

Abstract

The utility model relates to automatic processing equipment technical field especially, more channel oil circuit and gas circuit's DD rotary table of integration, including front seat, tailstock, initiative core shaft, transmission core shaft, rotary table, C axis core shaft, C axis connecting seat, C axis distribution axle, pipeline connecting seat, oil distribution block and channel subassembly, rotary table bottom surface connects C axis connecting seat, and C axis connecting seat top end rotatory connection C axis distribution axle, and C axis distribution axle top surface is equipped with gas hole and a plurality of oil outlet holes, and tailstock rear side connects pipeline connecting seat, and pipeline connecting seat is equipped with air inlet and a plurality of oil inlet holes, and the channel subassembly is arranged between air inlet and gas hole, between oil inlet and oil outlet hole, the utility model discloses a channel subassembly, realizes the medium transmission of air inlet and gas hole, oil inlet and oil outlet hole, and the multiple channel oil circuit and gas circuit are integrated in the inside, cancel the external pipeline, effectively avoid the pipeline winding, wear and tear problem, can greatly prolong the service life of equipment.

Description

Technical Field

[0001] This utility model relates to the field of automated processing equipment technology, and in particular to a DD rotary table that integrates multiple oil and air circuits. Background Technology

[0002] Direct-drive (DD) rotary tables, as core components of automated machining equipment, are widely used in CNC machine tools, robot joints, and precision testing equipment due to their high precision, high rigidity, and low noise. In practical applications, DD rotary tables often require hydraulic clamps to secure the workpiece, while pneumatic components are used for tasks such as air cleaning. Therefore, a well-designed hydraulic and pneumatic circuit layout is crucial for ensuring the stability and machining accuracy of the rotary table. In the existing technology, the oil and air circuits of the DD turntable are usually arranged by external pipelines, that is, the hydraulic system and the pneumatic system are connected to each other through hoses outside the turntable.

[0003] Furthermore, this layout has many drawbacks: Firstly, external pipelines are prone to entanglement and wear during high-speed rotation of the turntable, which not only affects the turntable's rotation range and movement flexibility but may also lead to pipeline rupture, causing oil or gas leaks, equipment failure, and a short service life. Secondly, the installation of external pipelines requires additional space, increasing the overall volume of the turntable and hindering the miniaturization design of the equipment. In addition, the decentralized oil and gas circuit layout results in more pipeline connection points, making it difficult to guarantee sealing performance and further reducing the reliability of the equipment. Summary of the Invention

[0004] This invention provides a DD rotary table that integrates multiple oil and gas circuits, aiming to overcome the problems existing in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A DD rotary table integrating multi-channel oil and air circuits has a front seat and a tail seat. A rotatable drive spindle is housed in the front seat, and a rotatable transmission spindle is housed in the tail seat. A rotary table is fixedly connected between the drive spindle and the transmission spindle. A rotatable C-axis spindle is housed within the rotary table. A C-axis connecting seat is fixedly connected to the bottom surface of the rotary table. A C-axis distribution shaft is rotatably connected to the outer wall of the top of the C-axis connecting seat. The C-axis distribution shaft rotates relative to the C-axis spindle. An air outlet is located at the center of the top surface of the C-axis distribution shaft, and several oil outlets are equidistantly arranged in a ring on the top surface of the C-axis distribution shaft. A pipeline connecting seat is fixedly connected to the rear side of the tail seat. An air inlet is located at the center of the rear side of the pipeline connecting seat, and several oil inlets are equidistantly arranged in a ring on the outer wall of the pipeline connecting seat. Channel assemblies are provided between the air inlet and the air outlet, and between the oil inlet and the oil outlet.

[0006] Preferably, the channel assembly includes an oil distribution block disposed on the rear side of the tailstock, an air inlet pipe disposed at the center of the rear side of the oil distribution block, a first air passage connecting the air inlet pipe being opened inside the oil distribution block, a first air passage connecting pipe connecting the first air passage and the air inlet being disposed on the top surface of the oil distribution block, a second air passage connecting the air inlet being disposed at the center axis position inside the pipe connecting seat, a third air passage being disposed at the center position of the bottom surface of the C-axis connecting seat, the second air passage and the third air passage being connected by a second air passage connecting pipe, a fourth air passage being disposed at the center axis position inside the C-axis distribution shaft, and a pressure chamber connecting the third air passage and the fourth air passage being disposed between the inner wall of the C-axis distribution shaft and the C-axis connecting seat.

[0007] Preferably, a leak-proof sealing ring is fitted at the connection between the second air passage and the second air passage connecting pipe.

[0008] Preferably, the channel assembly further includes a plurality of oil inlet pipes symmetrically arranged on the rear side of the oil distribution block, a plurality of first oil passages corresponding to the oil inlet pipes are opened in the oil distribution block, a plurality of first oil passage connecting pipes corresponding to the first oil passages and the oil inlet are symmetrically arranged on the top surface of the oil distribution block, a plurality of second oil passages corresponding to the oil inlet are opened circumferentially and equidistantly in the pipe connecting seat, a plurality of third oil passages corresponding to the second oil passages are opened in the transmission spindle, a plurality of fourth oil passages corresponding to the third oil passages are opened at one end of the turntable, a plurality of fifth oil passages are opened circumferentially and equidistantly in the C-axis connecting seat, a plurality of second oil passage connecting pipes corresponding to the fourth and fifth oil passages are arranged on the bottom surface of one end of the turntable, and a plurality of sixth oil passages corresponding to the oil outlet are opened circumferentially and equidistantly in the inner wall of the C-axis distribution shaft, the sixth oil passages corresponding to the fifth oil passages being connected.

[0009] Preferably, the outer wall of the pipeline connector is provided with several first oil passage connecting grooves corresponding to the second and third oil passages, which are equidistantly arranged in a ring between the outer wall of the pipeline connector and the transmission spindle; and the outer wall of the C-axis connector is provided with several second oil passage connecting grooves corresponding to the fifth and sixth oil passages, which are equidistantly arranged in a ring between the outer wall of the C-axis connector and the C-axis distribution shaft.

[0010] Preferably, the rear side of the tailstock is fixedly connected to the pipeline connector via a first rear cover. A first bearing is provided between the outer wall of the transmission spindle and the inner wall of the tailstock. A first sealing ring is fitted between the front side of the tailstock and the outer wall of the transmission spindle. A first cover is fitted between the outer wall of the first sealing ring and the outer wall of the transmission spindle. A first protective cover is also fitted between the outer wall of the transmission spindle and the first cover. A main drive motor for driving the active spindle is provided on the inner wall of the front seat. A second bearing is provided between the rear outer wall of the active spindle and the inner wall of the tailstock. A main drive brake cylinder is provided between the front outer wall of the active spindle and the inner wall of the tailstock. A second sealing ring is fitted between the rear side of the front seat and the outer wall of the active spindle. The wall sleeve is provided with a second cover, and a second protective cover is also provided between the outer wall of the drive spindle and the second cover; the bottom surface of the turntable is fixedly connected to the C-axis connecting seat through the second rear cover; the inner wall of the turntable is provided with a C-axis motor that drives the C-axis spindle; a third bearing is provided between the top outer wall of the C-axis spindle and the inner wall of the turntable; a C-axis brake cylinder is provided between the bottom end of the C-axis spindle and the inner wall of the turntable; a rotating platform is fixedly connected to the top surface of the C-axis spindle on the outer wall of the C-axis distribution shaft; a third protective cover is provided on the bottom surface of the rotating platform; a third sealing ring is provided on the outer wall of the C-axis spindle below the rotating platform; a third cover is also provided between the outer wall of the third sealing ring and the inner wall of the third protective cover.

[0011] Preferably, a valve block is slidably disposed on the top surface of the C-axis distribution shaft on the inner wall of the fourth air passage to prevent liquid from flowing into the fourth air passage.

[0012] Compared with the prior art, the DD rotary table integrating multi-channel oil and gas circuits provided by this utility model has the following beneficial effects: This utility model realizes the medium transmission between air inlet and outlet, and oil inlet and outlet through channel components. It integrates multiple oil and air channels internally, resulting in a compact structure. It eliminates external pipelines, effectively avoiding pipeline entanglement and wear problems, and can greatly extend the service life of the equipment. At the same time, it reduces the overall size of the turntable, which is conducive to the miniaturization design, installation and debugging of the equipment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a DD rotary table integrating multi-channel oil and gas circuits according to the present invention. Figure 2 This is a schematic sectional elevation view of the DD turntable integrating multiple oil and gas circuits according to the present invention. Figure 3 This is a schematic cross-sectional view of the DD rotary table integrating multi-channel oil and gas circuits according to the present invention. Figure 4 for Figure 3 Enlarged diagram of point A in the diagram; Figure 5 for Figure 3 Enlarged diagram of point B in the image; Figure 6 for Figure 3 Enlarged diagram of point C in the diagram; Figure 7 for Figure 3 Enlarged diagram of point D in the diagram; Figure 8 for Figure 3 Enlarged diagram of point E in the diagram.

[0014] Numbering in the diagram: 1-Front seat; 2-Tail seat; 3-Drive spindle; 4-Transmission spindle; 5-Turntable; 6-C-shaft spindle; 7-C-shaft connecting seat; 8-C-shaft distribution shaft; 9-Air outlet; 10-Oil outlet; 11-Pipeline connecting seat; 12-Air inlet; 13-Oil inlet; 14-Oil distribution block; 15-Air inlet pipe; 16-First air passage; 17-First air passage connecting pipe; 18-Second air passage; 19-Third air passage; 20-Second air passage connecting pipe; 21-Fourth air passage; 211-Valve block; 22-Air pressure chamber; 23-Leak-proof sealing ring; 24-Oil inlet pipe; 25-First oil passage; 26-First oil passage connecting pipe; 27-Second... Oil circuit passage; 28-Fourth oil circuit passage; 29-Fifth oil circuit passage; 30-Second oil circuit connecting pipe; 31-Sixth oil circuit passage; 32-First oil circuit connecting groove; 33-Second oil circuit connecting groove; 34-First rear cover; 35-First bearing; 36-First sealing ring; 37-First cover; 38-First protective cover; 39-Main drive motor; 40-Second bearing; 41-Main drive brake cylinder body; 42-Second sealing ring; 43-Second cover; 44-Second protective cover; 45-Second rear cover; 46-C-axis motor; 47-Third bearing; 48-C-axis brake cylinder body; 49-Rotating platform; 50-Third protective cover; 51-Third sealing ring; 52-Third cover. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0016] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0017] like Figures 1-8 As shown, this utility model discloses a DD turntable 5 that integrates multiple channels of oil and air circuits. It mainly includes a front seat 1, a tail seat 2, a drive spindle 3, a transmission spindle 4, a turntable 5, a C-axis spindle 6, a C-axis connecting seat 7, a C-axis distribution shaft 8, a pipeline connecting seat 11, an oil distribution block 14, and channel components, etc., to realize the integrated transmission of multiple channels of oil and air circuits.

[0018] The front seat 1 and the tail seat 2 are fixed support components of the turntable 5. The front seat 1 is equipped with a rotatable drive spindle 3, and the tail seat 2 is equipped with a rotatable transmission spindle 4. The turntable 5 is fixedly connected between the drive spindle 3 and the transmission spindle 4 to ensure that the turntable 5 can rotate stably around the axis of the drive spindle 3 and the transmission spindle 4. The turntable 5 is equipped with a rotatable C-axis spindle 6. The top of the C-axis spindle 6 is fixedly connected to a rotating platform 49. The C-axis spindle 6 is used to drive the rotating platform 49 to achieve high-precision rotational positioning.

[0019] The bottom surface of the turntable 5 is fixedly connected to the C-axis connecting seat 7 by bolts. The top outer wall of the C-axis connecting seat 7 is rotatably connected to the C-axis distribution shaft 8. The C-axis distribution shaft 8 rotates relative to the C-axis spindle 6. A vent hole 9 is opened at the center of the top surface of the C-axis distribution shaft 8 for outputting gas. Six oil outlet holes 10 are equidistantly opened in an annular shape on the top surface of the C-axis distribution shaft 8 for outputting oil, meeting the multi-channel hydraulic requirements.

[0020] The tailstock 2 is fixedly connected to the pipeline connector 11 via the first rear cover 34. An air inlet 12 is provided at the center of the rear side of the pipeline connector 11 for gas inlet. The outer wall of the pipeline connector 11 is provided with 6 oil inlet holes 13 at equal intervals for oil inlet. A channel assembly is provided between the air inlet hole 12 and the air outlet hole 9, and between the oil inlet hole 13 and the oil outlet hole 10. The channel assembly is used to realize the transmission of gas and oil.

[0021] like Figures 1-5 As shown, the channel assembly includes a gas transmission section and an oil transmission section: The gas transmission section includes: an oil distributor 14 located on the rear side of the tailstock 2; an air inlet pipe 15 located at the center of the rear side of the oil distributor 14 for connecting to an external pneumatic system; a first gas passage 16 connected to the air inlet pipe 15 is provided inside the oil distributor 14; a first gas connection pipe 17 connecting the first gas passage 16 and the air inlet 12 is provided on the top surface of the oil distributor 14, enabling gas transmission from the oil distributor 14 to the pipe connection seat 11; a second gas passage 18 connected to the air inlet 12 is provided at the central axis position inside the pipe connection seat 11; a third gas passage 19 is provided at the center position of the bottom surface of the C-axis connection seat 7; and a second gas passage 18 connects the second gas passage 18 and the third gas passage 19 via a second gas... The connecting pipe 20 is connected, and a leak-proof sealing ring 23 is fitted at the connection between the second air passage 18 and the second air passage connecting pipe 20 to enhance the sealing performance of the connection. A fourth air passage 21 is opened at the central shaft position inside the C-axis distribution shaft 8. A pressure chamber 22 connecting the third air passage 19 and the fourth air passage 21 is provided between the inner wall of the C-axis distribution shaft 8 and the C-axis connecting seat 7. The gas transmission path is: external pneumatic system → air inlet pipe 15 → first air passage 16 → first air passage connecting pipe 17 → air inlet 12 → second air passage 18 → second air passage connecting pipe 20 → third air passage 19 → pressure chamber 22 → fourth air passage 21 → air outlet 9 → external pneumatic component.

[0022] The oil transmission section includes: six symmetrically arranged oil inlet pipes 24 on the rear side of the oil distribution block 14, which are used to connect to an external hydraulic system; six corresponding first oil passages 25 are opened inside the oil distribution block 14, and six corresponding first oil passage connecting pipes 25 and oil inlet holes 13 are symmetrically arranged on the top surface of the oil distribution block 14, realizing the transmission of oil from the oil distribution block 14 to the pipe connection seat 11; six corresponding first oil passage connecting pipes 26 are equidistantly arranged in a ring inside the pipe connection seat 11, which are connected to the oil inlet holes 13. The second oil passage 27 has six corresponding third oil passages connected to the second oil passage 27 inside the transmission spindle 4. Six corresponding first oil passage connecting grooves 32 are equidistantly arranged in a ring between the outer wall of the pipe connector 11 and the transmission spindle 4, connecting the second and third oil passages, thus realizing the transmission of oil from the fixed pipe connector 11 to the rotating transmission spindle 4. The turntable 5 has six corresponding fourth oil passages 28 connected to the third oil passages at one end. The C-axis connector 7 has six corresponding fourth oil passages 28 arranged in a ring at equal intervals inside the turntable 5. Six fifth oil passages 29 are provided. Six second oil passage connecting pipes 30, corresponding to the fourth and fifth oil passages 28 and 29, are provided on the bottom surface of one end of the turntable 5 to realize the transmission of oil from the C-axis connecting seat 7 to the turntable 5. Six sixth oil passages 31, corresponding to the oil outlet holes 10, are equidistantly opened in an annular pattern on the inner wall of the C-axis distribution shaft 8. Six second oil passages 30, corresponding to the fifth and sixth oil passages 29 and 31, are equidistantly opened in an annular pattern between the outer wall of the C-axis connecting seat 7 and the C-axis distribution shaft 8. The through groove 33 enables the transmission of oil from the fixed C-axis connecting seat 7 to the rotating C-axis distribution shaft 8. The transmission path of the oil is as follows: external hydraulic system → oil inlet pipe 24 → first oil passage 25 → first oil passage connecting pipe 26 → oil inlet hole 13 → second oil passage 27 → first oil passage connecting groove 32 → third oil passage → fourth oil passage 28 → second oil passage connecting pipe 30 → fifth oil passage 29 → second oil passage connecting groove 33 → sixth oil passage 31 → oil outlet hole 10 → external hydraulic components.

[0023] It should be further explained that the six oil inlet pipes 24 correspond one-to-one with the six oil outlet holes 10. Specifically, among the six oil inlet pipes 24, three are oil outlet pipes and the other three are oil return pipes. That is, the six oil inlet pipes 24 are connected to the six oil outlet holes 10, and among the six oil outlet holes 10, three are oil outlet holes and the other three are oil return holes, which can recover the injected oil and achieve recycling.

[0024] In addition, a valve block 211 is slidably installed on the top surface of the C-axis distribution shaft 8 on the inner wall of the fourth air passage 21 to prevent liquid from flowing into the fourth air passage 21, while making the blown gas unidirectional and making the blowing operation stable.

[0025] To ensure the rotational stability and sealing performance of turntable 5, bearings and sealing structures are installed at each rotational connection point: like Figure 2 , Figure 3 and Figure 6 As shown, on the tailstock 2 side: a first bearing 35 is provided between the outer wall of the transmission spindle 4 and the inner wall of the tailstock 2 to ensure the rotational flexibility of the transmission spindle 4. A first sealing ring 36 is fitted on the front side of the tailstock 2 and the outer wall of the transmission spindle 4. A first cover 37 is fitted on the outer wall of the first sealing ring 36. A first protective cover 38 is also fitted between the outer wall of the transmission spindle 4 and the first cover 37, forming multiple sealing protections to prevent dust, impurities and liquids from entering.

[0026] like Figure 2 , Figure 3 and Figure 7 As shown, on the front seat 1 side: the inner wall of the front seat 1 is provided with a main drive motor 39 that drives the active spindle 3, and the main drive motor 39 provides power for the rotation of the active spindle 3; A second bearing 40 is provided between the outer wall of the rear end of the drive spindle 3 and the inner wall of the tailstock 2 to ensure the rotational flexibility of the drive spindle 3. A main drive brake cylinder 41 is provided between the front outer wall of the active spindle 3 and the inner wall of the tailstock 2 to achieve braking positioning of the active spindle 3. A second sealing ring 42 is fitted on the rear side of the front seat 1 and the outer wall of the drive spindle 3. A second cover 43 is fitted on the outer wall of the second sealing ring 42. A second protective cover 44 is also fitted between the outer wall of the drive spindle 3 and the second cover 43 to enhance the sealing performance.

[0027] like Figure 2 , Figure 3 and Figure 8 As shown, on the turntable 5 side: the bottom surface of the turntable 5 is fixedly connected to the C-axis connecting seat 7 through the second rear cover 45, and the inner wall of the turntable 5 is provided with a C-axis motor 46 that drives the C-axis spindle 6. The C-axis motor 46 provides power for the rotation of the C-axis spindle 6. A third bearing 47 is provided between the top outer wall of the C-axis spindle 6 and the inner wall of the turntable 5 to ensure the rotational flexibility of the C-axis spindle 6. A C-axis brake cylinder 48 is provided between the bottom end of the C-axis spindle 6 and the inner wall of the turntable 5 to achieve braking and positioning of the C-axis spindle 6. Specifically, a rotating platform 49 is fixedly connected to the top surface of the C-axis mandrel 6 on the outer wall of the C-axis distribution shaft 8 for mounting fixtures; a third cover 50 is provided on the bottom surface of the rotating platform 49, and a third sealing ring 51 is sleeved on the outer wall of the C-axis mandrel 6 below the rotating platform 49. A third cover 52 is also provided between the outer wall of the third sealing ring 51 and the inner wall of the third cover 50 to achieve sealing protection below the rotating platform 49.

[0028] It should be noted that both the second air circuit connecting pipe 20 and the second oil circuit connecting pipe 30 are made of rigid materials.

[0029] When the turntable 5 is working, the turntable 5 rotates, which drives the second air passage connecting pipe 20 to rotate. The second air passage connecting pipe 20 rotates relative to the second air passage 18 through the leak-proof sealing ring 23. At the same time, the second oil passage connecting pipe 30 rotates with the turntable 5. Since the second air passage connecting pipe 20 and the second oil passage connecting pipe 30 rotate around the transmission spindle 4 when rotating, the service life of the pipeline can be effectively improved and greatly extended compared with the traditional external pipeline.

[0030] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A DD rotary table integrating multi-channel oil and air circuits, comprising a front seat and a tail seat, wherein a rotatable drive spindle is disposed in the front seat, a rotatable transmission spindle is disposed in the tail seat, a rotary table is fixedly connected between the drive spindle and the transmission spindle, and a rotatable C-axis spindle is disposed within the rotary table, characterized in that, A C-axis connecting seat is fixedly connected to the bottom surface of the turntable. A C-axis distribution shaft is rotatably connected to the top outer wall of the C-axis connecting seat. The C-axis distribution shaft rotates relative to the C-axis spindle. An air outlet is opened at the center of the top surface of the C-axis distribution shaft. Several oil outlet holes are equidistantly opened in an annular pattern on the top surface of the C-axis distribution shaft. The tailstock is fixedly connected to a pipeline connector. An air inlet is provided at the center of the rear side of the pipeline connector. Several oil inlets are provided at equal intervals in a ring on the outer wall of the pipeline connector. A channel assembly is provided between the air inlet and the air outlet, and between the oil inlet and the oil outlet.

2. The DD rotary table integrating multi-channel oil and gas circuits according to claim 1, characterized in that, The channel assembly includes an oil distribution block located at the rear of the tailstock. An air inlet pipe is located at the center of the rear of the oil distribution block. A first air passage connecting the air inlet pipe is opened inside the oil distribution block. A first air passage connecting pipe connecting the first air passage and the air inlet is provided on the top surface of the oil distribution block. A second air passage connecting the air inlet is opened at the center axis of the pipe connecting seat. A third air passage is opened at the center of the bottom surface of the C-axis connecting seat. The second and third air passages are connected by a second air passage connecting pipe. A fourth air passage is opened at the center axis of the C-axis distribution shaft. A pressure chamber connecting the third and fourth air passages is provided between the inner wall of the C-axis distribution shaft and the C-axis connecting seat.

3. The DD rotary table integrating multi-channel oil and gas circuits according to claim 2, characterized in that, A leak-proof sealing ring is fitted at the connection between the second air passage and the second air passage connecting pipe.

4. The DD rotary table integrating multi-channel oil and gas circuits according to claim 1, characterized in that, The channel assembly also includes several oil inlet pipes symmetrically arranged on the rear side of the oil distribution block. Several first oil passages corresponding to the oil inlet pipes are opened within the oil distribution block. Several first oil passage connecting pipes corresponding to the first oil passages and the oil inlet are symmetrically arranged on the top surface of the oil distribution block. Several second oil passages corresponding to the oil inlet are equidistantly arranged in a ring within the pipe connecting seat. Several third oil passages corresponding to the second oil passages are opened within the transmission spindle. Several fourth oil passages corresponding to the third oil passages are opened at one end of the turntable. Several fifth oil passages are equidistantly arranged in a ring within the C-axis connecting seat. Several second oil passage connecting pipes corresponding to the fourth and fifth oil passages are arranged on the bottom surface of one end of the turntable. Several sixth oil passages corresponding to the oil outlet are equidistantly arranged in a ring on the inner wall of the C-axis distribution shaft. The sixth oil passages are correspondingly connected to the fifth oil passages.

5. A DD rotary table integrating multi-channel oil and gas circuits according to claim 4, characterized in that, The outer wall of the pipeline connector is provided with several first oil passage connecting grooves that are equidistantly arranged in a ring between the outer wall of the pipeline connector and the transmission spindle, corresponding to the second oil passage and the third oil passage. The outer wall of the C-axis connector is provided with several second oil passage connecting grooves that are equidistantly arranged in a ring between the outer wall of the C-axis connector and the C-axis distribution shaft, corresponding to the fifth oil passage and the sixth oil passage.

6. The DD rotary table integrating multi-channel oil and gas circuits according to claim 1, characterized in that, The rear side of the tailstock is fixedly connected to the pipeline connection seat through the first rear cover. A first bearing is provided between the outer wall of the transmission spindle and the inner wall of the tailstock. A first sealing ring is sleeved on the front side of the tailstock and the outer wall of the transmission spindle. A first cover is sleeved on the outer wall of the first sealing ring. A first protective cover is also sleeved between the outer wall of the transmission spindle and the first cover. The inner wall of the front seat is provided with a main drive motor that drives the active spindle. A second bearing is provided between the outer wall of the rear end of the active spindle and the inner wall of the tail seat. A main drive brake cylinder is provided between the outer wall of the front end of the active spindle and the inner wall of the tail seat. A second sealing ring is sleeved on the rear side of the front seat and the outer wall of the active spindle. A second cover is sleeved on the outer wall of the second sealing ring. A second protective cover is also sleeved between the outer wall of the active spindle and the second cover. The bottom surface of the turntable is fixedly connected to the C-axis connecting seat through the second rear cover. The inner wall of the turntable is equipped with a C-axis motor that drives the C-axis spindle. A third bearing is provided between the top outer wall of the C-axis spindle and the inner wall of the turntable. A C-axis brake cylinder is provided between the bottom end of the C-axis spindle and the inner wall of the turntable. A rotating platform is fixedly connected to the top surface of the C-axis spindle on the outer wall of the C-axis distribution shaft. A third protective cover is provided on the bottom surface of the rotating platform. A third sealing ring is fitted on the outer wall of the C-axis spindle below the rotating platform. A third cover is also provided between the outer wall of the third sealing ring and the inner wall of the third protective cover.

7. A DD rotary table integrating multi-channel oil and gas circuits according to claim 2, characterized in that, A valve block is slidably installed on the top surface of the C-axis distribution shaft on the inner wall of the fourth air passage to prevent liquid from flowing into the fourth air passage.

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