A rotary oil distribution mechanism used in lathe fixtures

Abstract

The invention discloses a rotary oil distribution mechanism applied to a lathe fixture, comprising an oil distributor body, an oil distributor shaft, an oil distributor shaft, a transition flange, a spindle fixing flange and a connecting plate, wherein the oil distributor body is sleeved on the outer side of the oil distributor shaft, the outer side of the oil distributor shaft is sleeved with a lathe spindle, the spindle fixing flange is sleeved and fixed on the outer side of the lathe spindle, the oil distributor shaft, the transition flange and the spindle fixing flange are fixedly connected in sequence, the front end and the rear end of the oil distributor shaft are fixedly connected to the connecting plate and the transition flange respectively, the front end of the lathe spindle is fixed with a connecting plate, a plurality of oil inlet holes are provided on the side wall of the oil distributor body, each oil inlet hole is communicated with an oil circuit, a rotary joint interface is provided at the rear end of the oil distributor shaft, each oil circuit and the central gas circuit are communicated with the lathe fixture through the oil distributor shaft, the transition flange, the oil distributor shaft and the connecting plate in sequence. The mechanism has a stable and reliable structure, high assembly precision and good dynamic balance, and can avoid vibration of the oil distributor shaft during lathe processing.

Description

Technical Field

[0001] The invention relates to an oil distribution shaft structure, in particular to a rotary oil distribution mechanism applied to a lathe clamp. Background Art

[0002] The oil distributor shaft is a common component in the field of machining, which is used to provide hydraulic oil to related parts or workpieces. Most of the existing oil distributor shafts adopt a simple structure, which inserts a steel pipe into a pre-opened hole and uses the steel pipe as an oil pipe. The problems are that the machining accuracy is not high, and the steel pipe is easy to deform during installation. During the high-speed rotation of the oil distributor shaft, the steel pipe is easy to vibrate, resulting in poor dynamic balance of the oil distributor shaft. In addition, there is also the disadvantage of easy oil leakage. Summary of the invention

[0003] The technical problem to be solved by the present invention is: in view of the deficiencies of the prior art, a rotary oil distribution mechanism for lathe clamps is provided which has a stable and reliable structure, high assembly precision and good dynamic balance.

[0004] The technical solution adopted by the present invention to solve the above technical problems is: a rotating oil distribution mechanism applied to a lathe fixture, comprising a transversely and coaxially arranged oil distributor body, an oil distributor shaft, an oil distributor shaft, a transition flange, a spindle fixing flange and a connecting plate, the oil distributor body is sleeved on the outer side of the oil distributor shaft, a front bearing and a rear bearing are installed between the oil distributor shaft and the oil distributor body, a pressure cover is coaxially fixed to the rear end of the oil distributor body, the pressure cover presses the outer ring of the rear bearing, the outer side of the oil distributor shaft is coaxially sleeved with a lathe spindle, the spindle fixing flange is coaxially sleeved and fixed on the outer side of the lathe spindle, the oil distributor shaft, the transition flange and the spindle fixing flange are fixed in sequence Fixed connection, the front end and rear end of the oil separator shaft are fixedly connected to the connecting plate and the transition flange respectively, the front end of the lathe spindle is coaxially fixed with a connecting plate, the connecting plate is used to fix the connection to the lathe fixture, a plurality of oil inlet holes are provided on the side wall of the oil separator body, each of the oil inlet holes is communicated with an oil circuit, each of the oil circuits passes through the oil separator rotating shaft, the transition flange, the oil separator shaft and the connecting plate in sequence to communicate with the oil inlet of the lathe fixture, a rotary joint interface is provided at the rear end of the oil separator rotating shaft, the rotary joint interface is communicated with the central air circuit, the central air circuit passes through the oil separator rotating shaft, the transition flange, the oil separator shaft and the connecting plate in sequence to communicate with the air inlet of the lathe fixture.

[0005] After the rotary oil distributor of the present invention is assembled, the rotary joint is connected to the rotary joint interface at the rear end of the oil distributor shaft, and the front end of the connecting disk is fixedly connected to the lathe fixture clamped with the workpiece. After preparation, hydraulic oil is introduced into the multi-way oil circuit through multiple oil inlet holes, and pressurized gas is introduced into the central air circuit through the rotary joint, and the workpiece can be processed. During the processing, the oil distributor body and the rotary joint are fixed, the oil distributor shaft, the transition flange, the oil distributor and the main shaft fixing flange rotate with the lathe main shaft, the hydraulic oil enters the multi-way oil circuit, and successively enters the lathe fixture through the oil distributor shaft, the transition flange, the oil distributor shaft and the connecting disk; the air flow enters the central air circuit, and successively enters the lathe fixture through the oil distributor shaft, the transition flange, the oil distributor shaft and the connecting disk. The rotary oil distributor of the present invention can introduce multiple oil circuits and one air circuit into the lathe fixture at the same time, and its structure is stable and reliable, with high assembly accuracy and good dynamic balance, and can avoid the vibration of the oil distributor shaft during lathe processing.

[0006] Preferably, the outer surface of the oil separator shaft is provided with a plurality of annular grooves, each of which is arranged around the circumferential direction of the oil separator shaft, and the plurality of annular grooves are arranged at intervals along the axial direction of the oil separator shaft, and each of the annular grooves is connected to an oil inlet hole and one of the oil circuits. The design of the annular grooves is conducive to introducing hydraulic oil into the oil circuit, ensuring that each oil inlet hole is always connected to each oil circuit during the rotation of the oil separator shaft.

[0007] Furthermore, the inner surface of the oil separator body is provided with an annular first oil collecting groove and a second oil collecting groove, the first oil collecting groove and the second oil collecting groove are respectively arranged around the circumferential direction of the oil separator body, the first oil collecting groove is located at the front side of the multiple annular grooves and close to the front bearing, the second oil collecting groove is located at the rear side of the multiple annular grooves and close to the rear bearing, the bottom of the side wall of the oil separator body is provided with a connecting hole and an oil drain hole, the connecting hole is arranged along the axial direction of the oil separator body, the front end and the rear end of the connecting hole are respectively communicated with the first oil collecting groove and the second oil collecting groove, and the oil drain hole is communicated with the connecting hole. During the high-speed rotation of the lathe spindle, when the oil penetrates into the contact surface between the oil separator body and the oil separator shaft, the first oil collecting groove and the second oil collecting groove can provide a buffer space to collect the oil, and make the collected oil flow into the connecting hole and be discharged from the oil drain port to avoid adverse effects caused by the oil entering the front bearing and the rear bearing.

[0008] Furthermore, the outer surface of the oil separator shaft is provided with a plurality of annular first drainage grooves and a plurality of annular second drainage grooves, the plurality of first drainage grooves are opposite to the first oil collecting grooves and are arranged in sequence along the axial direction of the oil separator shaft, the plurality of second drainage grooves are opposite to the second oil collecting grooves and are arranged in sequence along the axial direction of the oil separator shaft, each of the first drainage grooves and each of the second drainage grooves are respectively arranged around the circumferential direction of the oil separator shaft, and from the cross section of each of the first drainage grooves, the cross section of each of the first drainage grooves is a V-shape formed by a first straight side and a first oblique side, the first straight side is close to the front bearing, and the first oblique side is oblique to the front end of the oil separator shaft; from the cross section of each of the second drainage grooves, the cross section of each of the second drainage grooves is a V-shape formed by a second straight side and a second oblique side, the second straight side is close to the rear bearing, and the second oblique side is oblique to the rear end of the oil separator shaft. The design of the above-mentioned first drainage groove is conducive to preventing the oil that has penetrated into the contact surface between the oil separator body and the oil separator shaft from flowing to the front bearing as much as possible. Similarly, the design of the above-mentioned first drainage groove is conducive to preventing the oil that has penetrated into the contact surface between the oil separator body and the oil separator shaft from flowing to the rear bearing as much as possible, thereby providing better protection for the front bearing and the rear bearing.

[0009] Preferably, each of the oil circuits comprises a first oil hole, a second oil hole, a third oil hole and a fourth oil hole which are sequentially connected and coaxially arranged, and the first oil hole, the second oil hole, the third oil hole and the fourth oil hole are respectively opened along the axial direction of the oil separator shaft, the transition flange, the oil separator shaft and the connecting plate; the central air circuit comprises a first central air hole, a second central air hole, a third central air hole and a fourth central air hole which are sequentially connected and coaxially arranged, and the first central air hole, the second central air hole, the third central air hole and the fourth central air hole are respectively opened along the axial direction of the oil separator shaft, the transition flange, the oil separator shaft and the connecting plate.

[0010] Furthermore, a plurality of first sealing rings are compressed and arranged between the oil distributor shaft and the transition flange, a first sealing ring is arranged at the junction of each first oil hole and each second oil hole, and a first sealing ring is arranged at the junction of the first center air hole and the second center air hole; a plurality of second sealing rings are compressed and arranged between the transition flange and the oil distributor shaft, a second sealing ring is arranged at the junction of each second oil hole and each third oil hole; a plurality of third sealing rings are compressed and arranged between the oil distributor shaft and the connecting plate, a third sealing ring is arranged at the junction of each third oil hole and each fourth oil hole; a plurality of fourth sealing rings are installed at the front end of the connecting plate, and a fourth sealing ring is arranged at the front end of each fourth oil hole and the front end of the fourth center air hole. The above-mentioned end face sealing design can ensure the sealing effect of multiple oil circuits and one air circuit, and effectively prevent oil and air leakage of the mechanism.

[0011] Furthermore, a first centering hole concave backward is coaxially provided at the front end of the oil separator shaft, a first positioning boss is coaxially provided at the rear end of the transition flange, and the stop of the first positioning boss is centered in the first centering hole; a second centering hole concave backward is coaxially provided at the front end of the transition flange, a second positioning boss is coaxially provided at the rear end of the oil separator shaft, and the stop of the second positioning boss is centered in the second centering hole, and a fifth sealing ring is tightly provided between the outer surface of the second positioning boss and the inner wall of the second centering hole; a third centering hole concave forward is coaxially provided at the rear end of the connecting plate, a third positioning boss is coaxially provided at the front end of the oil separator shaft, and the stop of the third positioning boss is centered in the third centering hole, and a sixth sealing ring is tightly provided between the outer surface of the third positioning boss and the inner wall of the third centering hole. The design of the multiple stopper centering and sealing rings can further improve the assembly accuracy and coaxiality of the mechanism, ensure the sealing effect of the central air path and the dynamic balance of the mechanism, and ensure smooth and reliable operation.

[0012] Furthermore, the front end of the transition flange is coaxially provided with a fourth centering hole that is concave backwards, and the rear end stop of the lathe spindle is centered in the fourth centering hole; the rear end of the connecting plate is coaxially provided with a centering conical hole that is concave forwards, and the front end of the lathe spindle is integrally provided with a positioning cone, and the conical surface of the positioning cone is centered in the centering conical hole. The centering method combining stop centering with cone centering can ensure the assembly accuracy of the lathe spindle, ensure the coaxiality of the connecting plate and the lathe fixture, and allow multiple oils and one gas to flow smoothly from the connecting plate into the lathe fixture.

[0013] Preferably, the oil separator shaft, transition flange and main shaft fixing flange are fixedly connected in sequence by multiple screws, the front end and rear end of the oil separator shaft are fixedly connected to the connecting plate and the transition flange by multiple screws respectively, and the lathe main shaft is fixedly connected to the connecting plate by multiple screws.

[0014] Furthermore, an adjustment washer is compressed between the transition flange and the main shaft fixing flange, and the adjustment washer is composed of multiple adjustment washer pieces, and each screw connecting the transition flange and the main shaft fixing flange is passed through the multiple adjustment washer pieces. The adjustment washer is used to adjust the relative position between the transition flange, the main shaft fixing flange and the oil distribution shaft to ensure assembly accuracy. The adjustment washer is designed to be composed of multiple adjustment washer pieces, which is convenient for on-site assembly and disassembly during adjustment, and is conducive to improving the assembly efficiency of the mechanism.

[0015] Compared with the prior art, the advantages of the present invention are: after the rotary oil distributor of the present invention is assembled, the rotary joint interface at the rear end of the oil distributor shaft is connected to the rotary joint, and the front end of the connecting plate is fixedly connected to the lathe fixture clamped with the workpiece. After preparation, hydraulic oil is introduced into the multi-way oil circuit through multiple oil inlet holes, and pressurized gas is introduced into the central air circuit through the rotary joint, and the workpiece can be processed. During the processing, the oil distributor body and the rotary joint are fixed, the oil distributor shaft, the transition flange, the oil distributor and the spindle fixing flange rotate with the lathe spindle, the hydraulic oil enters the multi-way oil circuit, and successively enters the lathe fixture through the oil distributor shaft, the transition flange, the oil distributor shaft and the connecting plate; the air flow enters the central air circuit, and successively enters the lathe fixture through the oil distributor shaft, the transition flange, the oil distributor shaft and the connecting plate. The rotary oil distributor of the present invention can introduce multiple oil circuits and one air circuit into the lathe fixture at the same time, and its structure is stable and reliable, with high assembly accuracy and good dynamic balance, and can avoid the vibration of the oil distributor shaft during lathe processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of the rotary oil distribution mechanism in the embodiment;

[0017] Figure 2 for Figure 1 Middle AA section view;

[0018] Figure 3 for Figure 2 Enlarged view of point D in the middle;

[0019] Figure 4 for Figure 2 Enlarged view of point E in the middle;

[0020] Figure 5 for Figure 2 Enlarged view of point F in the middle;

[0021] Figure 6for Figure 2 Enlarged view of point G in the middle;

[0022] Figure 7 for Figure 1 Middle BB section view;

[0023] Figure 8 for Figure 1 Middle CC section view. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below with reference to the accompanying drawings.

[0025] The rotary oil separator mechanism applied to the lathe fixture of Example 1, as shown in the figure, includes a transversely and coaxially arranged oil separator body 1, an oil separator rotating shaft 2, an oil separator shaft 3, a transition flange 4, a spindle fixing flange 51 and a connecting plate 6, the oil separator body 1 is sleeved on the outer side of the oil separator rotating shaft 2, a front bearing 21 and a rear bearing 22 are installed between the oil separator rotating shaft 2 and the oil separator body 1, a pressure cover 7 is coaxially fixed to the rear end of the oil separator body 1, the pressure cover 7 presses the outer ring of the rear bearing 22, the outer side of the oil separator shaft 3 is coaxially sleeved with a lathe spindle 5, the spindle fixing flange 51 is coaxially sleeved and fixed on the outer side of the lathe spindle 5, the oil separator rotating shaft 2, the transition flange 4 and the spindle fixing flange 51 are fixedly connected in sequence, and the oil separator body 1 is provided with a rotating shaft 2 ... The front and rear ends of the oil shaft 3 are fixedly connected to the connecting plate 6 and the transition flange 4 respectively. The front end of the lathe spindle 5 is coaxially fixed with a connecting plate 6, and the connecting plate 6 is used to fix and connect the lathe fixture (not shown in the figure). Four oil inlet holes 10 are opened on the side wall of the oil separator body 1. Each oil inlet hole 10 is connected to an oil circuit. Each oil circuit passes through the oil separator rotating shaft 2, the transition flange 4, the oil separator shaft 3 and the connecting plate 6 in turn to communicate with the oil inlet of the lathe fixture. A rotary joint interface 23 is opened at the rear end of the oil separator rotating shaft 2. The rotary joint interface 23 is connected to the central air circuit. The central air circuit passes through the oil separator rotating shaft 2, the transition flange 4, the oil separator shaft 3 and the connecting plate 6 in turn to communicate with the air inlet of the lathe fixture.

[0026] In Example 1, in Example 1, four annular grooves 24 are provided on the outer surface of the oil separator shaft 2, each annular groove 24 is arranged around the circumferential direction of the oil separator shaft 2, and the four annular grooves 24 are arranged at intervals along the axial direction of the oil separator shaft 2, and each annular groove 24 is connected to an oil inlet hole 10 and an oil circuit.

[0027] In Example 1, each oil circuit includes a first oil hole 81, a second oil hole 82, a third oil hole 83 and a fourth oil hole 84, which are sequentially connected and coaxially arranged, and the first oil hole 81, the second oil hole 82, the third oil hole 83 and the fourth oil hole 84 are respectively opened along the axial direction of the oil separator shaft 2, the transition flange 4, the oil separator shaft 3 and the connecting plate 6; the central air circuit includes a first central air hole 91, a second central air hole 92, a third central air hole 93 and a fourth central air hole 94, which are sequentially connected and coaxially arranged, and the first central air hole 91, the second central air hole 92, the third central air hole 93 and the fourth central air hole 94 are respectively opened along the axial direction of the oil separator shaft 2, the transition flange 4, the oil separator shaft 3 and the connecting plate 6. Five first sealing rings 25 are compressed between the oil separator shaft 2 and the transition flange 4, a first sealing ring 25 is provided at the connection between each first oil hole 81 and each second oil hole 82, and a first sealing ring 25 is provided at the connection between the first center air hole 91 and the second center air hole 92; four second sealing rings 41 are compressed between the transition flange 4 and the oil separator shaft 3, a second sealing ring 41 is provided at the connection between each second oil hole 82 and each third oil hole 83; four third sealing rings 61 are compressed between the oil separator shaft 3 and the connecting plate 6, a third sealing ring 61 is provided at the connection between each third oil hole 83 and each fourth oil hole 84; five fourth sealing rings 62 are installed at the front end of the connecting plate 6, and a fourth sealing ring 62 is respectively provided at the front end of each fourth oil hole 84 and the front end of the fourth center air hole 94.

[0028] In Embodiment 1, the front end of the oil distributor shaft 2 is coaxially provided with a first centering hole 26 concave backwards, and the rear end of the transition flange 4 is coaxially provided with a first positioning boss 42, and the stop of the first positioning boss 42 is centered in the first centering hole 26; the front end of the transition flange 4 is coaxially provided with a second centering hole 43 concave backwards, and the rear end of the oil distributor shaft 3 is coaxially provided with a second positioning boss 31, and the stop of the second positioning boss 31 is centered in the second centering hole 43, and a fifth sealing ring 32 is tightly provided between the outer surface of the second positioning boss 31 and the inner wall of the second centering hole 43; the rear end of the connecting plate 6 is coaxially provided with a forward concave A third centering hole 63 is coaxially provided at the front end of the oil distribution shaft 3 with a third positioning boss 33, the stop of the third positioning boss 33 is centered in the third centering hole 63, and a sixth sealing ring 34 is tightly provided between the outer surface of the third positioning boss 33 and the inner wall of the third centering hole 63; a fourth centering hole 44 concave backwards is coaxially provided at the front end of the transition flange 4, and the rear end stop of the lathe spindle 5 is centered in the fourth centering hole 44; a centering tapered hole 64 concave forwards is coaxially provided at the rear end of the connecting plate 6, and a positioning cone 52 is integrally provided at the front end of the lathe spindle 5, and the conical surface of the positioning cone 52 is centered in the centering tapered hole 64.

[0029] In Example 1, the oil distributor shaft 2, the transition flange 4 and the spindle fixing flange 51 are fixedly connected in sequence by multiple screws, the front end and the rear end of the oil distributor shaft 3 are fixedly connected to the connecting plate 6 and the transition flange 4 by multiple screws, respectively, and the lathe spindle 5 is fixedly connected to the connecting plate 6 by multiple screws. An adjustment washer is tightly arranged between the transition flange 4 and the spindle fixing flange 51, and the adjustment washer is composed of four adjustment washers 45, and each screw connecting the transition flange 4 and the spindle fixing flange 51 is passed through the four adjustment washers 45.

[0030] The rotary oil collecting mechanism applied to the lathe fixture of Example 2 is different from Example 1 in that, in Example 2, the inner surface of the oil separator body 1 is provided with an annular first oil collecting groove 11 and a second oil collecting groove 12, and the first oil collecting groove 11 and the second oil collecting groove 12 are respectively arranged around the circumferential direction of the oil separator body 1, the first oil collecting groove 11 is located on the front side of the four annular grooves 24 and close to the front bearing 21, and the second oil collecting groove 12 is located on the rear side of the four annular grooves 24 and close to the rear bearing 22. A connecting hole 13 and an oil drain hole 14 are provided at the bottom of the side wall of the oil separator body 1, and the connecting hole 13 is arranged along the axial direction of the oil separator body 1, and the front and rear ends of the connecting hole 13 are respectively communicated with the first oil collecting groove 11 and the second oil collecting groove 12, and the oil drain hole 14 is communicated with the connecting hole 13; the outer surface of the oil separator shaft 2 is provided with three annular first drainage grooves 27 and three annular second drainage grooves 28 The three first drainage grooves 27 are opposite to the first oil collecting groove 11 and are arranged in sequence along the axial direction of the oil separator shaft 2. The three second drainage grooves 28 are opposite to the second oil collecting groove 12 and are arranged in sequence along the axial direction of the oil separator shaft 2. Each first drainage groove 27 and each second drainage groove 28 are respectively arranged around the circumferential direction of the oil separator shaft 2. From the cross-section of each first drainage groove 27, the cross-section of each first drainage groove 27 is a V-shape composed of a first straight side 271 and a first beveled side 272. The first straight side 271 is close to the front bearing 21, and the first beveled side 272 is inclined to the front end of the oil separator shaft 2; from the cross-section of each second drainage groove 28, the cross-section of each second drainage groove 28 is a V-shape composed of a second straight side 281 and a second beveled side 282. The second straight side 281 is close to the rear bearing 22, and the second beveled side 282 is inclined to the rear end of the oil separator shaft 2.

[0031] The above-mentioned rotating oil distribution mechanism can ensure the coaxiality of components such as the transition flange 4, the oil distribution shaft 3, the connecting plate 6 and the lathe spindle 5 to the greatest extent, ensure the assembly accuracy and dynamic balance of the mechanism, and ensure the sealing effect of the four oil circuits and one air circuit to prevent oil and air leakage.

[0032] After the above rotary oil distribution mechanism is assembled, the rotary joint interface 23 at the rear end of the oil distributor shaft 2 is connected to a rotary joint (not shown in the figure), and the front end of the connecting plate 6 is fixedly connected to the lathe fixture clamped with the workpiece. After preparation, hydraulic oil is introduced into the four-way oil circuit through the four oil inlet holes 10, and pressurized gas is introduced into the central air circuit through the rotary joint, and then the workpiece can be processed. During the processing, the oil distributor body 1 and the rotary joint are fixed, the oil distributor shaft 2, the transition flange 4, the oil distributor and the spindle fixing flange 51 rotate together with the lathe spindle 5, the hydraulic oil enters the four-way oil circuit, and enters the lathe fixture successively through the oil distributor shaft 2, the transition flange 4, the oil distributor shaft 3 and the connecting plate 6; the air flow enters the central air circuit, and enters the lathe fixture successively through the oil distributor shaft 2, the transition flange 4, the oil distributor shaft 3 and the connecting plate 6.

Claims

1. A rotary oil distribution mechanism used in lathe fixtures, characterized in that It includes a transversely and coaxially arranged oil separator body, an oil separator shaft, an oil separator shaft, a transition flange, a main shaft fixing flange and a connecting plate, the oil separator body is sleeved on the outside of the oil separator shaft, a front bearing and a rear bearing are installed between the oil separator shaft and the oil separator body, a pressure cover is coaxially fixed to the rear end of the oil separator body, the pressure cover presses the outer ring of the rear bearing, the outer side of the oil separator shaft is coaxially sleeved with a lathe main shaft, the main shaft fixing flange is coaxially sleeved and fixed on the outside of the lathe main shaft, the oil separator shaft, the transition flange and the main shaft fixing flange are fixedly connected in sequence, the front end and the rear end of the oil separator shaft are respectively connected to The connecting plate and the transition flange are fixedly connected, the front end of the lathe spindle is coaxially fixed with a connecting plate, the connecting plate is used for fixedly connecting the lathe fixture, a plurality of oil inlet holes are provided on the side wall of the oil separator body, each of the oil inlet holes is communicated with an oil circuit, each of the oil circuits sequentially passes through the oil separator rotating shaft, the transition flange, the oil separator shaft and the connecting plate to communicate with the oil inlet of the lathe fixture, a rotary joint interface is provided at the rear end of the oil separator rotating shaft, the rotary joint interface is communicated with the central air circuit, the central air circuit sequentially passes through the oil separator rotating shaft, the transition flange, the oil separator shaft and the connecting plate to communicate with the air inlet of the lathe fixture; The outer surface of the oil separator shaft is provided with a plurality of annular grooves, each of which is arranged around the circumferential direction of the oil separator shaft, and the plurality of annular grooves are arranged at intervals along the axial direction of the oil separator shaft, and each of the annular grooves is communicated with one of the oil inlet holes and one of the oil paths; The inner surface of the oil separator body is provided with an annular first oil collecting groove and a second oil collecting groove, the first oil collecting groove and the second oil collecting groove are respectively arranged around the circumferential direction of the oil separator body, the first oil collecting groove is located at the front side of the multiple annular grooves and close to the front bearing, the second oil collecting groove is located at the rear side of the multiple annular grooves and close to the rear bearing, the bottom of the side wall of the oil separator body is provided with a connecting hole and an oil drain hole, the connecting hole is arranged along the axial direction of the oil separator body, the front end and the rear end of the connecting hole are respectively communicated with the first oil collecting groove and the second oil collecting groove, and the oil drain hole is communicated with the connecting hole; The outer surface of the oil separator shaft is provided with a plurality of annular first drainage grooves and a plurality of annular second drainage grooves, the plurality of first drainage grooves are opposite to the first oil collecting grooves and are arranged in sequence along the axial direction of the oil separator shaft, the plurality of second drainage grooves are opposite to the second oil collecting grooves and are arranged in sequence along the axial direction of the oil separator shaft, each of the first drainage grooves and each of the second drainage grooves are arranged around the circumferential direction of the oil separator shaft respectively, and from the cross section of each of the first drainage grooves, the cross section of each of the first drainage grooves is a V-shape formed by a first straight side and a first oblique side, the first straight side is close to the front bearing, and the first oblique side is inclined toward the front end of the oil separator shaft; from the cross section of each of the second drainage grooves, the cross section of each of the second drainage grooves is a V-shape formed by a second straight side and a second oblique side, the second straight side is close to the rear bearing, and the second oblique side is inclined toward the rear end of the oil separator shaft; Each oil circuit includes a first oil hole, a second oil hole, a third oil hole and a fourth oil hole that are finely processed and connected in sequence and coaxially arranged, and the first oil hole, the second oil hole, the third oil hole and the fourth oil hole are respectively opened along the axial direction of the oil separator shaft, the transition flange, the oil separator shaft and the connecting plate; the central air circuit includes a first central air hole, a second central air hole, a third central air hole and a fourth central air hole that are finely processed and connected in sequence and coaxially arranged, and the first central air hole, the second central air hole, the third central air hole and the fourth central air hole are respectively opened along the axial direction of the oil separator shaft, the transition flange, the oil separator shaft and the connecting plate.

2. The rotary oil distribution mechanism for lathe fixture according to claim 1, characterized in that A plurality of first sealing rings are compressed and arranged between the oil separator shaft and the transition flange, a first sealing ring is arranged at the connection between each of the first oil holes and each of the second oil holes, and a first sealing ring is arranged at the connection between the first center air hole and the second center air hole; a plurality of second sealing rings are compressed and arranged between the transition flange and the oil separator shaft, a second sealing ring is arranged at the connection between each of the second oil holes and each of the third oil holes; a plurality of third sealing rings are compressed and arranged between the oil separator shaft and the connecting plate, a third sealing ring is arranged at the connection between each of the third oil holes and each of the fourth oil holes; a plurality of fourth sealing rings are installed at the front end of the connecting plate, a fourth sealing ring is respectively arranged at the front end of each of the fourth oil holes and the front end of the fourth center air hole.

3. The rotary oil distribution mechanism for lathe fixture according to claim 1, characterized in that A first centering hole concave backward is coaxially provided at the front end of the oil separator shaft, and a first positioning boss is coaxially provided at the rear end of the transition flange, and the stop of the first positioning boss is centered in the first centering hole; a second centering hole concave backward is coaxially provided at the front end of the transition flange, and a second positioning boss is coaxially provided at the rear end of the oil separator shaft, and the stop of the second positioning boss is centered in the second centering hole, and a fifth sealing ring is tightly provided between the outer surface of the second positioning boss and the inner wall of the second centering hole; a third centering hole concave forward is coaxially provided at the rear end of the connecting plate, and a third positioning boss is coaxially provided at the front end of the oil separator shaft, and the stop of the third positioning boss is centered in the third centering hole, and a sixth sealing ring is tightly provided between the outer surface of the third positioning boss and the inner wall of the third centering hole.

4. The rotary oil distribution mechanism for lathe fixture according to claim 1, characterized in that The front end of the transition flange is coaxially provided with a fourth centering hole which is concave backwards, and the rear end stop of the lathe spindle is centered in the fourth centering hole; the rear end of the connecting plate is coaxially provided with a centering conical hole which is concave forwards, and the front end of the lathe spindle is integrally provided with a positioning cone, and the conical surface of the positioning cone is centered in the centering conical hole.

5. The rotary oil distribution mechanism for lathe fixture according to claim 1, characterized in that The oil separator shaft, transition flange and main shaft fixing flange are fixedly connected in sequence by multiple screws, the front end and rear end of the oil separator shaft are fixedly connected to the connecting plate and the transition flange by multiple screws respectively, and the lathe main shaft is fixedly connected to the connecting plate by multiple screws.

6. The rotary oil distribution mechanism for lathe fixture according to claim 5, characterized in that An adjusting gasket is tightly arranged between the transition flange and the main shaft fixing flange. The adjusting gasket is formed by splicing multiple adjusting gaskets. The screws connecting the transition flange and the main shaft fixing flange are passed through the multiple adjusting gaskets.

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