Five-axis rotary table of rotary hydraulic device with anti-overflow structure

Abstract

The invention provides a five-axis rotary table of a rotary hydraulic device with an anti-overflow structure, which comprises a rotary shaft, a shaft sleeve and a workbench, and is characterized in that positive pressure medium pipelines are arranged outside high-pressure gas or high-pressure hydraulic oil pipelines of a first circle and a last circle; a reverse acting force relative to the action of the high-pressure gas or the high-pressure hydraulic oil is applied to the first circle and the last circle of the high-pressure gas or the high-pressure hydraulic oil annular sealing rings, and can also be discharged through the positive-pressure pipeline, so that the high-pressure gas or the high-pressure hydraulic oil is prevented from overflowing, and the five-axis turntable is protected from being damaged; when the overflowed high-pressure gas or high-pressure hydraulic oil can be output through the positive-pressure pipeline, the pressure sensor gives an alarm after detecting that the pressure intensity is abnormal, so that damage to an annular sealing ring of the high-pressure gas or the high-pressure hydraulic oil is found in time, and continuous, effective and intelligent use of automatic clamping and positioning of a workpiece is truly achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of rotating shafts, and more specifically, to a five-axis turntable of a rotating hydraulic device with an anti-overflow structure. Background Art

[0002] The workpieces on the traditional five-axis machine tool workbench are mostly clamped and pressed manually, which no longer meets the current market demand for intelligent, automated and continuous production. Traditional rotary joints do not have an automatic alarm function. If used inside a five-axis turntable, the leakage of high-pressure oil due to sealing ring failure will not be discovered in time, which will cause the electrical components inside the five-axis turntable to be damaged and fail, causing huge losses. Therefore, a demand has been raised for actively monitoring whether the rotary joint is leaking.

[0003] The existing patent number is: CN211288321U, which discloses a five-axis cradle turntable hydraulic system, in which each of the first oil circuits is opened along the axial direction of the B-axis oil distributor, and the multiple first oil circuits are arranged at circumferential intervals along the B-axis oil distributor, and each of the second oil circuits is opened along the axial direction of the B-axis transmission shaft, and the multiple second oil circuits are arranged at circumferential intervals along the B-axis transmission shaft; each of the third oil circuits is opened along the axial direction of the C-axis oil distributor, and the multiple third oil circuits are arranged at circumferential intervals along the C-axis oil distributor, and each of the fourth oil circuits is opened along the axial direction of the C-axis oil distributor sleeve, and the multiple fourth oil circuits are arranged at circumferential intervals along the C-axis oil distributor sleeve. A plurality of first annular grooves are arranged between the B-axis transmission shaft and the B-axis oil separator, and the plurality of first annular grooves are arranged at intervals along the axial direction of the B-axis oil separator, and each of the first annular grooves is arranged circumferentially around the outer cylindrical surface of the B-axis oil separator and the inner cylindrical surface of the B-axis transmission shaft, and each of the first oil circuits is connected with a radially opened first sub-oil circuit, and each of the second oil circuits is connected with a radially opened second sub-oil circuit, and each of the first annular grooves is respectively connected with the first sub-oil circuit and the second sub-oil circuit; a plurality of second annular grooves are arranged between the C-axis oil separator sleeve and the C-axis oil separator, and the plurality of second annular grooves are arranged at intervals along the axial direction of the C-axis oil separator, and each of the second annular grooves is arranged circumferentially around the outer cylindrical surface of the C-axis oil separator and the inner cylindrical surface of the C-axis oil separator sleeve, and each of the third oil circuits is connected with a radially opened third sub-oil circuit, and each of the fourth oil circuits is connected with a radially opened fourth sub-oil circuit, and each of the second annular grooves is respectively connected with the third sub-oil circuit and the fourth sub-oil circuit. Since the B-axis transmission shaft is the rotating body of the B-axis assembly, the C-axis transmission shaft and the C-axis oil separator sleeve are the rotating bodies of the C-axis assembly, and the B-axis oil separator and the C-axis oil separator are respectively one of the fixed parts of the B-axis assembly and the C-axis assembly, the design of multiple first annular grooves and multiple second annular grooves can ensure that no matter how the B-axis transmission shaft and the C-axis transmission shaft rotate, each first oil circuit always remains connected to the second oil circuit, and each third oil circuit always remains connected to the fourth oil circuit. A plurality of first rotating seals are arranged between the B-axis transmission shaft and the B-axis oil separator, and the plurality of first rotating seals are arranged at intervals along the axial direction of the B-axis oil separator, and one of the first rotating seals is arranged on both sides of each of the first annular grooves; a plurality of second rotating seals are arranged between the C-axis oil separator sleeve and the C-axis oil separator, and the plurality of second rotating seals are arranged at intervals along the axial direction of the C-axis oil separator, and one of the second rotating seals is arranged on both sides of each of the second annular grooves.The plurality of first rotary seals and the plurality of second rotary seals can play a better sealing role, ensuring the sealing and isolation effect of each first annular groove and each second annular groove.

[0004] This existing structure can be used when it can be visually inspected from the outside or when leakage will not cause significant losses. However, the five-axis precision rotary table integrates complex electrical components and precision displacement sensors. Once the sealing ring inside the traditional rotary joint is used for a long time, it will cause aging, wear and displacement, which will cause high-pressure gas or high-pressure hydraulic oil to overflow the rotating shaft, causing the precision displacement sensor and motor coil inside the five-axis rotary table to burn out, resulting in damage to the machine tool. Summary of the invention

[0005] In view of this, in order to solve the above-mentioned problem, the present invention proposes a five-axis turntable with a rotating hydraulic device with an anti-overflow structure, by arranging high-pressure gas pipelines 50 on the outside of the high-pressure gas or high-pressure hydraulic oil pipelines 40 of the first circle and the last circle, a reverse force relative to the action of the high-pressure gas or high-pressure hydraulic oil is applied to the high-pressure gas or high-pressure hydraulic oil annular sealing rings of the first circle and the last circle, so that the high-pressure gas or high-pressure hydraulic oil annular sealing ring is not easy to shift and the sealing performance is better. At the same time, even if the high-pressure gas or high-pressure hydraulic oil annular sealing ring is damaged, it can be discharged through the positive pressure pipeline 53 to prevent the high-pressure gas or high-pressure hydraulic oil from overflowing the rotary joint and protecting the five-axis turntable from being damaged. Furthermore, when the overflowed high-pressure gas or high-pressure hydraulic oil can be output through the positive pressure pipeline 53, the pressure sensor detects the pressure abnormality and alarms, thereby timely discovering that the high-pressure gas or high-pressure hydraulic oil annular sealing ring is damaged, truly realizing the continuous, effective and intelligent use of automatic clamping and positioning of the workpiece.

[0006] An automatic clamping five-axis turntable with an anti-overflow rotary joint comprises: a rotating shaft 10, a sleeve 20, and a workbench 30. The outer cylindrical surface of the rotating shaft 10 is sleeved with the sleeve 20, and one axial end of the rotating shaft 10 is connected to the workbench 30. The rotating shaft 10 can drive the workbench 30 to rotate in the sleeve 20. The axial interval between the rotating shaft 10 and the sleeve 20 is provided with a plurality of circles of high-pressure gas or high-pressure hydraulic oil pipelines 40 of different heights. The axial upper part of the first circle of the high-pressure gas or high-pressure hydraulic oil pipeline 40 is connected to the axial upper part of the last circle of the high-pressure gas or high-pressure hydraulic oil pipeline 40. A high-pressure gas pipeline 50 is provided at the axial lower part of the high-pressure gas or high-pressure hydraulic oil pipeline 40, and a second annular sealing ring 54 is axially provided between the high-pressure gas pipeline 50 and the adjacent high-pressure gas or high-pressure hydraulic oil pipeline 40. The high-pressure gas inside the high-pressure gas pipeline 50 applies a reverse force relative to the action of the high-pressure gas or high-pressure hydraulic oil to the corresponding second annular sealing ring 54, so that the high-pressure gas or high-pressure hydraulic oil annular sealing ring is not easy to shift, the sealing performance is better, and the high-pressure gas or high-pressure hydraulic oil is prevented from overflowing.

[0007] In some embodiments, the high-pressure gas or high-pressure hydraulic oil pipeline 40 is composed of multiple circles of axially spaced annular first grooves 41 of different heights on the outer circular surface of the rotating shaft 10 close to the sleeve 20 or the inner circular surface of the sleeve 20 close to the rotating shaft 10, and a first annular sealing ring 42 is provided at the axial interval between two adjacent circles of annular first grooves 41, and each of the annular first grooves 41 is filled with high-pressure gas or high-pressure hydraulic oil, and annular second grooves 51 are provided on the upper part of the first circle of annular first grooves 41 and the lower part of the last circle of annular first grooves 41, and high-pressure gas is provided in the annular second grooves 51.

[0008] In some embodiments, an oil inlet hole 43 is provided on the radially opposite surface of each circle of the annular first groove 41, and each of the oil inlet holes 43 is respectively connected to the output end of a fourth oil pipeline 44 or each of the oil inlet holes 43 is connected to the output end of a fourth oil pipeline 44, and the input end of the oil pipeline is connected to an external high-pressure oil pipe. When each of the oil inlet holes 43 is respectively connected to the output end of a fourth oil pipeline 44, it is easy to control the pressure of the high-pressure gas or high-pressure hydraulic oil pipeline 40.

[0009] Furthermore, one axial end of the sleeve 20 away from the workbench 30 is fixedly connected to the rear cover 60 in a radial direction, and the high-pressure oil pipe passes through the rear cover 60 and is connected to an external high-pressure liquid boosting device.

[0010] In some embodiments, an oil outlet hole 45 is provided at the bottom of each of the annular first grooves 41, and the workbench 30 is provided with a second oil circuit 31 in the axial direction and a third oil circuit 32 in the axial direction. The second oil circuit 31 and the third oil circuit 32 are cross-connected, and the high-pressure gas or high-pressure hydraulic oil in each of the annular first grooves 41 is transported from the oil outlet hole 45 to the second oil circuit 31 in the axial direction and the third oil circuit 32 in the axial direction of the workbench 30 through the oil guide pipe 46.

[0011] Furthermore, the second oil circuit 31 in the axial direction and the third oil circuit 32 in the axial direction of the workbench 30 are connected to the vise 13 on the workbench 30. When there is high-pressure gas or high-pressure hydraulic oil in the second oil circuit 31 in the axial direction and the third oil circuit 32 in the axial direction of the workbench 30, the vise 13 on the workbench 30 is clamped. When there is no high-pressure gas or high-pressure hydraulic oil, the vise 13 is released, thereby achieving the purpose of automatic clamping of the workpiece on the workbench 30 without manual operation.

[0012] In some embodiments, a third annular sealing ring 55 is provided at the upper part of the first circle of the annular second groove 51 and the lower part of the last circle of the annular second groove 51, so that the positive pressure gas in the annular second groove 51 is continuously pressurized, pushing the sealing ring 54 tightly, making it less likely for the oil pressure inside the rotary joint to leak out.

[0013] Furthermore, the positive-pressure gas in the second annular groove 51 maintains a constant pressure, so that the positive-pressure gas in the second annular groove 51 always applies a reverse force to the first and last circles of the second annular sealing rings 54 relative to the action of the high-pressure gas or high-pressure hydraulic oil, so that the high-pressure oil in the oil tank is not easy to overflow through the sealing ring.

[0014] Furthermore, each of the annular second grooves 51 is provided with an input hole 52, and the input hole 52 is connected to the output end of a positive pressure pipeline 53 or is respectively connected to the output end of a positive pressure pipeline 53, and the input end of the positive pressure pipeline 53 is connected to the positive pressure gas input pipeline, and the overflowed high-pressure gas or high-pressure hydraulic oil can be output through the positive pressure pipeline 53. When the input holes 52 are respectively connected to the output end of a positive pressure pipeline 53, by monitoring the changes in the pressure value of the positive pressure pipeline 53, it is actively identified whether the rotary joint has a leak.

[0015] Furthermore, a pressure sensor is provided on the positive pressure pipeline 53. When the overflowed high-pressure gas or high-pressure hydraulic oil can be output through the positive pressure pipeline 53, the pressure sensor detects the pressure abnormality and then alarms, thereby timely discovering that the high-pressure gas or high-pressure hydraulic oil annular sealing ring is damaged.

[0016] In some embodiments, a fourth annular sealing ring 57 is disposed on the mounting interface between the rotating shaft 10 and the workbench 30 , so that high-pressure gas or high-pressure hydraulic oil is not easily overflowed to the workbench 30 .

[0017] Beneficial effects of the present invention: The present invention proposes a five-axis turntable with a rotating hydraulic device with an anti-overflow structure, by arranging high-pressure gas pipelines 50 on the outside of the high-pressure gas or high-pressure hydraulic oil pipelines 40 of the first circle and the last circle, a reverse force relative to the action of the high-pressure gas or high-pressure hydraulic oil is applied to the high-pressure gas or high-pressure hydraulic oil annular sealing rings of the first circle and the last circle, so that the high-pressure gas or high-pressure hydraulic oil annular sealing ring is not easy to shift and the sealing performance is better. At the same time, even if the high-pressure gas or high-pressure hydraulic oil annular sealing ring is damaged, it can be discharged through the positive pressure pipeline 53 to prevent the high-pressure gas or high-pressure hydraulic oil from overflowing and protect the five-axis turntable from being damaged. Furthermore, when the overflowed high-pressure gas or high-pressure hydraulic oil can be output through the positive pressure pipeline 53, the pressure sensor detects the pressure abnormality and alarms, thereby timely discovering that the high-pressure gas or high-pressure hydraulic oil annular sealing ring is damaged, truly realizing the continuous and effective intelligent use of automatic clamping and positioning of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an overall structural diagram of the five-axis turntable of the rotary hydraulic device with an anti-overflow structure of the present invention.

[0019] Figure 2 It is a side view of the five-axis turntable of the rotary hydraulic device with an anti-overflow structure of the present invention.

[0020] Figure 3 It is an AA cross-sectional view of the rotary hydraulic device with an anti-overflow structure of the present invention.

[0021] Figure 4 It is a cross-sectional view of a shaft sleeve of a rotary hydraulic device with an anti-overflow structure according to the present invention.

[0022] Figure 5 The rotary hydraulic device with anti-overflow structure of the present invention Figure 4 A magnified view of part A

[0023] Figure 6 It is a three-dimensional view of the shaft sleeve of the rotary hydraulic device with an anti-overflow structure of the present invention.

[0024] Figure 7 It is a three-dimensional view of the rotating shaft of the rotary hydraulic device with an anti-overflow structure of the present invention.

[0025] Main component symbols

[0026] Rotating shaft 10; vise 13; bushing 20; workbench 30; second oil circuit 31; third oil circuit 32; high-pressure gas or high-pressure hydraulic oil pipeline 40; first annular groove 41; first annular sealing ring 42; oil inlet hole 43; fourth oil pipeline 44; oil outlet hole 45; oil guide pipe 46; high-pressure gas pipeline 50; second annular groove 51; input hole 52; positive pressure pipeline 53; second annular sealing ring 54; third annular sealing ring 55; fourth annular sealing ring 57; rear cover 60.

[0027] The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0028] Example:

[0029] like Figure 1-4 As shown, an automatic clamping five-axis turntable with an overflow-proof rotary joint includes: a rotating shaft 10, a sleeve 20, and a workbench 30. The outer cylindrical surface of the rotating shaft 10 is sleeved with the sleeve 20, and one axial end of the rotating shaft 10 is connected to the workbench 30. The rotating shaft 10 can drive the workbench 30 to rotate in the sleeve 20. The axial interval between the rotating shaft 10 and the sleeve 20 is provided with multiple circles of high-pressure gas or high-pressure hydraulic oil pipelines 40 of different heights, and the axial upper part of the first circle of the high-pressure gas or high-pressure hydraulic oil pipeline 40 is connected to the last circle. A high-pressure gas pipeline 50 is provided at the axial lower part of the high-pressure gas or high-pressure hydraulic oil pipeline 40, and a second annular sealing ring 54 is axially provided between the high-pressure gas pipeline 50 and the adjacent high-pressure gas or high-pressure hydraulic oil pipeline 40. The high-pressure gas inside the high-pressure gas pipeline 50 applies a reverse force relative to the action of the high-pressure gas or high-pressure hydraulic oil to the corresponding second annular sealing ring 54, so that the high-pressure gas or high-pressure hydraulic oil annular sealing ring is not easy to shift, the sealing performance is better, and the high-pressure gas or high-pressure hydraulic oil is prevented from overflowing.

[0030] like Figure 6 , Figure 7As shown, the high-pressure gas or high-pressure hydraulic oil pipeline 40 is composed of multiple circles of axially spaced annular first grooves 41 of different heights on the outer circumferential surface of the rotating shaft 10 close to the sleeve 20 or the inner circumferential surface of the sleeve 20 close to the rotating shaft 10. A first annular sealing ring 42 is provided at the axial interval between two adjacent circles of the annular first grooves 41. High-pressure gas or high-pressure hydraulic oil is passed through each of the annular first grooves 41. The upper part of the first circle of the annular first grooves 41 and the lower part of the last circle of the annular first grooves 41 are both provided with an annular second groove 5 1, high-pressure gas is provided in the annular second groove 51, and an oil inlet hole 43 is provided on the radially opposite surface of each circle of the annular first groove 41, each of the oil inlet holes 43 is respectively connected to the output end of a fourth oil pipeline 44 or each of the oil inlet holes 43 is connected to the output end of a fourth oil pipeline 44, and the input end of the oil pipeline is connected to an external high-pressure oil pipe. When each of the oil inlet holes 43 is respectively connected to the output end of a fourth oil pipeline 44, it is easy to control the pressure of the high-pressure gas or the high-pressure hydraulic oil pipeline 40.

[0031] A third annular sealing ring 55 is provided at the upper part of the first circle of the annular second groove 51 and the lower part of the last circle of the annular second groove 51, so that the positive pressure gas in the annular second groove 51 is continuously pressurized and pushes the sealing ring 54, so that the oil pressure inside the rotary joint is less likely to leak out. The positive pressure gas in the annular second groove 51 maintains a constant pressure, so that the positive pressure gas in the annular second groove 51 always applies a reverse force relative to the high-pressure gas or high-pressure hydraulic oil to the first circle and the last circle of the second annular sealing ring 54, so that the high-pressure oil in the oil groove is not easy to overflow through the sealing ring. Each of the annular second grooves 51 is provided with an input hole 52, and the input hole 52 is connected to There is an output end of a positive pressure pipeline 53 or the output end is respectively connected to a positive pressure pipeline 53, and the input end of the positive pressure pipeline 53 is connected to the positive pressure gas input pipeline. The overflowed high-pressure gas or high-pressure hydraulic oil can be output through the positive pressure pipeline 53. When the input holes 52 are respectively connected to the output ends of the positive pressure pipeline 53, the change of the pressure value of the positive pressure pipeline 53 is monitored to actively identify whether the rotary joint has a leak. A pressure sensor is provided on the positive pressure pipeline 53. When the overflowed high-pressure gas or high-pressure hydraulic oil can be output through the positive pressure pipeline 53, the pressure sensor detects the pressure abnormality and then alarms, thereby timely discovering that the high-pressure gas or high-pressure hydraulic oil annular sealing ring is damaged.

[0032] Figure 1-2 and Figure 7 As shown, one axial end of the sleeve 20 away from the workbench 30 is fixedly connected to the rear cover 60 in the radial direction, and the high-pressure oil pipe passes through the rear cover 60 and is connected to an external high-pressure liquid boosting device.

[0033] An oil outlet hole 45 is provided at the bottom of each of the annular first grooves 41, and the workbench 30 is provided with a second oil circuit 31 in the axial direction and a third oil circuit 32 in the axial direction. The second oil circuit 31 and the third oil circuit 32 are cross-connected. The high-pressure gas or high-pressure hydraulic oil in each of the annular first grooves 41 is transported from the oil outlet hole 45 to the second oil circuit 31 in the axial direction and the third oil circuit 32 in the axial direction of the workbench 30 through the oil guide pipe 46. The second oil circuit 31 in the axial direction and the third oil circuit 32 in the axial direction of the workbench 30 are connected to the vise 13 on the workbench 30. When there is high-pressure gas or high-pressure hydraulic oil in the second oil circuit 31 in the axial direction and the third oil circuit 32 in the axial direction of the workbench 30, the vise 13 on the workbench 30 is clamped. When there is no high-pressure gas or high-pressure hydraulic oil, the vise 13 is released, thereby achieving the purpose of automatic clamping of the workpiece on the workbench 30 without manual operation.

[0034] A fourth annular sealing ring 57 is disposed on the mounting interface between the rotating shaft 10 and the workbench 30 , so that high-pressure gas or high-pressure hydraulic oil is not likely to overflow to the workbench 30 .

[0035] Beneficial effects of the present invention: The present invention proposes a five-axis turntable with a rotating hydraulic device with an anti-overflow structure, by arranging high-pressure gas pipelines 50 on the outside of the high-pressure gas or high-pressure hydraulic oil pipelines 40 of the first circle and the last circle, a reverse force relative to the action of the high-pressure gas or high-pressure hydraulic oil is applied to the high-pressure gas or high-pressure hydraulic oil annular sealing rings of the first circle and the last circle, so that the high-pressure gas or high-pressure hydraulic oil annular sealing ring is not easy to shift and the sealing performance is better. At the same time, even if the high-pressure gas or high-pressure hydraulic oil annular sealing ring is damaged, it can be discharged through the positive pressure pipeline 53 to prevent the high-pressure gas or high-pressure hydraulic oil from overflowing and protect the five-axis turntable from being damaged. Furthermore, when the overflowed high-pressure gas or high-pressure hydraulic oil can be output through the positive pressure pipeline 53, the pressure sensor detects the pressure abnormality and alarms, thereby timely discovering that the high-pressure gas or high-pressure hydraulic oil annular sealing ring is damaged, truly realizing the continuous and effective intelligent use of automatic clamping and positioning of the workpiece.

[0036] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

[0037] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A five-axis turntable of a rotary hydraulic device with an anti-overflow structure, comprising: A rotating shaft (10), a sleeve (20), and a workbench (30), wherein the outer cylindrical surface of the rotating shaft (10) is sleeved with the sleeve (20), and one axial end of the rotating shaft (10) is connected to the workbench (30), and the rotating shaft (10) can drive the workbench (30) to rotate in the sleeve (20), characterized in that: the axial interval between the rotating shaft (10) and the sleeve (20) is provided with a plurality of circles of high-pressure gas or high-pressure hydraulic oil pipelines (40) of different heights, and the axial upper part of the first circle of the high-pressure gas or high-pressure hydraulic oil pipeline (40) is connected to the last circle of the high-pressure gas or high-pressure hydraulic oil pipeline (40) in the axial direction. A positive pressure medium pipeline (50) is provided at the axial lower part of the body or the high pressure hydraulic oil pipeline (40), and a second annular sealing ring (54) is provided axially between the positive pressure medium pipeline (50) and the adjacent high pressure gas or high pressure hydraulic oil pipeline (40). The positive pressure medium inside the positive pressure medium pipeline (50) applies a reverse force to the high pressure gas or high pressure hydraulic oil on the corresponding second annular sealing ring (54), thereby making the high pressure gas or high pressure hydraulic oil annular sealing ring less likely to shift, having better sealing performance, and preventing the high pressure gas or high pressure hydraulic oil from overflowing.

2. The five-axis turntable of the rotary hydraulic device with an anti-overflow structure according to claim 1, characterized in that: The high-pressure gas or high-pressure hydraulic oil pipeline (40) is composed of multiple circles of axially spaced annular first grooves (41) of different heights on the outer cylindrical surface of the rotating shaft (10) close to the sleeve (20) or the inner cylindrical surface of the sleeve (20) close to the rotating shaft (10), and a first annular sealing ring 42 is provided at the axial interval between two adjacent circles of the annular first grooves (41), and each of the annular first grooves (41) is filled with high-pressure gas or high-pressure hydraulic oil, and an annular second groove (51) is provided at the upper part of the first circle of the annular first grooves (41) and the lower part of the last circle of the annular first grooves (41), and the annular second grooves (51) are filled with high-pressure gas.

3. The five-axis turntable of the rotary hydraulic device with an anti-overflow structure according to claim 2, characterized in that: An oil inlet hole (43) is provided on the radially opposite surface of each circle of the annular first groove (41), and each of the oil inlet holes (43) is respectively connected to the output end of a fourth oil pipeline (44) or each of the oil inlet holes (43) is connected to the output end of a fourth oil pipeline (44), and the input end of the oil pipeline is connected to an external high-pressure oil pipe. When each of the oil inlet holes (43) is respectively connected to the output end of a fourth oil pipeline (44), it is easy to control the pressure of the high-pressure gas or high-pressure hydraulic oil pipeline (40).

4. The five-axis turntable of the rotary hydraulic device with an anti-overflow structure according to claim 1, characterized in that: One axial end of the shaft sleeve (20) away from the workbench (30) is fixedly connected to the rear cover (60) in the radial direction, and the high-pressure oil pipe passes through the rear cover (60) and is connected to an external high-pressure liquid boosting device.

5. The five-axis turntable of the rotary hydraulic device with an anti-overflow structure according to claim 2, characterized in that: An oil outlet hole (45) is provided at the bottom of each of the annular first grooves (41); the workbench (30) is provided with a second oil circuit (31) in the axial direction and a third oil circuit (32) in the axial direction; the second oil circuit (31) and the third oil circuit (32) are cross-connected; the high-pressure gas or high-pressure hydraulic oil in each of the annular first grooves (41) is transported from the oil outlet hole (45) to the second oil circuit (31) in the axial direction and the third oil circuit (32) in the axial direction of the workbench (30) through an oil guide pipe 46.

6. The five-axis turntable of the rotary hydraulic device with an anti-overflow structure according to claim 1, characterized in that: The second oil circuit (31) in the axial direction and the third oil circuit (32) in the axial direction of the workbench (30) are connected to the vise (13) on the workbench (30); when there is high-pressure gas or high-pressure hydraulic oil in the second oil circuit (31) in the axial direction and the third oil circuit (32) in the axial direction of the workbench (30), the vise (13) on the workbench (30) is clamped; when there is no high-pressure gas or high-pressure hydraulic oil, the vise (13) is released, thereby achieving the purpose of automatic clamping of the workpiece on the workbench (30) without manual operation.

7. The five-axis turntable of the rotary hydraulic device with an anti-overflow structure according to claim 2, characterized in that: A third annular sealing ring (55) is provided at the upper part of the first circle of the annular second groove (51) and the lower part of the last circle of the annular second groove (51), so that the positive pressure gas in the annular second groove (51) is continuously maintained, pushing the sealing ring 54 tightly, making it more difficult for the oil pressure inside the rotary joint to leak out.

8. The five-axis turntable of the rotary hydraulic device with an overflow prevention structure as claimed in claim 2, characterized in that: The positive pressure gas in the annular second groove (51) maintains a constant pressure, so that the positive pressure gas in the annular second groove (51) always exerts a reverse force on the first and last circles of the second annular sealing rings (54) relative to the action of the high-pressure gas or the high-pressure hydraulic oil, so that the high-pressure oil in the oil groove is not easy to overflow through the sealing ring.

9. The five-axis turntable of the rotary hydraulic device with an anti-overflow structure according to claim 2, characterized in that: Each of the annular second grooves (51) is provided with an input hole (52), the input hole (52) being connected to the output end of a positive pressure pipeline (53) or respectively connected to the output end of a positive pressure pipeline (53), the input end of the positive pressure pipeline (53) being connected to a positive pressure gas input pipeline, the overflowed high-pressure gas or high-pressure hydraulic oil being able to be output through the positive pressure pipeline (53), when the input hole (52) is respectively connected to the output end of a positive pressure pipeline (53), by monitoring the change of the pressure value of the positive pressure pipeline (53), it is actively identified whether the rotary joint has leakage.

10. The five-axis turntable of the rotary hydraulic device with an anti-overflow structure according to claim 9, characterized in that: The positive pressure pipeline (53) is provided with a pressure sensor. When the overflowed high-pressure gas or high-pressure hydraulic oil can be output through the positive pressure pipeline (53), the pressure sensor detects the pressure abnormality and then issues an alarm, thereby timely discovering that the annular sealing ring of the high-pressure gas or high-pressure hydraulic oil is damaged.

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