High-stability rotating mechanism applied to static pressure spindle

Abstract

The utility model relates to static pressure main shaft technical field, concretely relates to a kind of high-stability rotating mechanism applied to static pressure main shaft, including shell, the inside of shell is provided with shaft, the outside of shaft is provided with oil temperature control mechanism, and oil temperature control mechanism includes the first cooling pipe fixedly connected in the inside of shell, the middle part of first cooling pipe is attached with second cooling pipe, and second cooling pipe is fixedly connected in the inside of shell, first cooling pipe and second cooling pipe are all spiral and the coverage of first cooling pipe is greater than second cooling pipe, and the inside wall of first cooling pipe and second cooling pipe is fixedly connected with heat conduction plate.The utility model cooperates with the cooperation of shell and oil temperature control mechanism, by setting first cooling pipe and second cooling pipe, both are spiral and the coverage of first cooling pipe is greater than second cooling pipe, cooperate heat conduction plate, can increase the contact area with the lubricating oil in oil guide pipe, improve heat exchange efficiency.

Description

Technical Field

[0001] This utility model relates to the field of hydrostatic spindle technology, specifically to a highly stable rotating mechanism applied to hydrostatic spindles. Background Technology

[0002] In the field of precision machinery manufacturing, especially in industries such as high-precision machine tools and precision measuring instruments, the spindle is a core component, and its performance directly determines the accuracy and stability of the entire equipment. Traditional rolling bearings or sliding bearings are prone to generating large friction and heat when operating at high speeds, leading to thermal deformation and wear problems, which in turn affect the working accuracy and lifespan of the spindle.

[0003] If the heat generated by the spindle during high-speed operation is not dissipated in a timely and effective manner, it will seriously affect the thermal stability of the spindle. Furthermore, low-temperature oil films are less prone to cavitation, and reducing the oil temperature can effectively improve the stability of hydrostatic spindles.

[0004] Therefore, it is necessary to invent a highly stable rotating mechanism for hydrostatic spindles to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a highly stable rotating mechanism for hydrostatic spindles. By cooperating with the housing and the oil temperature control mechanism, the stability of the hydrostatic spindle is improved, thereby solving the problem in the prior art that if the heat generated by the spindle during high-speed operation is not dissipated in a timely and effective manner, it will seriously affect the thermal stability of the spindle.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-stability rotating mechanism for hydrostatic spindles, comprising a housing, a rotating shaft disposed inside the housing, and an oil temperature control mechanism disposed outside the rotating shaft. The oil temperature control mechanism includes a first cooling pipe fixedly connected inside the housing, a second cooling pipe attached to the middle portion of the first cooling pipe, the second cooling pipe being fixedly connected inside the housing, both the first and second cooling pipes being spiral-shaped, with the first cooling pipe having a larger coverage area than the second cooling pipe, a heat-conducting plate fixedly connected to the inner walls of the first and second cooling pipes, an oil guide pipe disposed inside the heat-conducting plate, and several sets of oil injection ports opened on the inner side of the oil guide pipe, a gap being provided between the oil guide pipe and the rotating shaft, the gap being located inside the housing, and return oil pipes connected to both ends of the gap. The cooperation of the first and second cooling pipes results in a greater cooling effect on the oil temperature in the middle of the rotating shaft, ensuring that the oil temperature is maintained at a suitable level.

[0007] Preferably, the oil return pipe is located inside the housing, and the right end of the oil return pipe is connected to an oil outlet pipe, which is fixedly connected to the surface of the housing. The oil return pipe and the oil outlet pipe work together to discharge lubricating oil, so as to facilitate collection and recycling.

[0008] Preferably, the top of the outer shell is fixedly connected to a first water inlet, the bottom of the first water inlet is connected to a first transition groove and the first transition groove is opened inside the outer shell, the first transition groove is connected to a second cooling pipe, and the connection between the first transition groove and the second cooling pipe is located at the center of the second cooling pipe. Through the cooperation of the first transition groove and the second cooling pipe, the center of the rotating shaft is cooled first.

[0009] Preferably, the top of the outer shell is fixedly connected to a second water inlet, the bottom of the second water inlet is connected to a second transition groove, and the second transition groove is opened inside the outer shell. The second transition groove is connected to a first cooling pipe, and the connection between the second transition groove and the first cooling pipe is located at one end of the first cooling pipe. Cross-counterflow heat exchange is formed through the cooperation of the second transition groove and the first cooling pipe.

[0010] Preferably, the right side of the first cooling pipe is connected to a first water outlet pipe, and the right side of the second cooling pipe is connected to a second water outlet pipe. Both the first and second water outlet pipes are fixedly connected to the right side of the outer casing. The cooling water from the first and second cooling pipes is discharged through the first and second water outlet pipes for easy collection and recycling.

[0011] Preferably, a sealing bushing is fixedly connected to the right end of the outer casing, a plate heat exchanger is fixedly connected to the left side of the outer casing, a circulating water pipe is fixedly connected to the plate heat exchanger, an oil pump is fixedly connected to the top of the plate heat exchanger, and an oil inlet pipe is fixedly connected to the oil inlet end of the oil pump, so that the lubricating oil is pre-cooled through the cooperation of the oil pump and the plate heat exchanger.

[0012] Preferably, the bottom end of the oil inlet pipe is connected to an oil delivery pipe, which is located inside the shell and the plate heat exchanger. The oil delivery pipe is connected to the oil guide pipe, and the lubricating oil enters the oil guide pipe through the cooperation of the oil delivery pipe and the oil guide pipe, thereby forming an oil film inside the gap through the oil guide pipe.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0014] 1. By cooperating with the outer casing and the oil temperature control mechanism, and by setting a first cooling pipe and a second cooling pipe, both of which are spiral-shaped and the first cooling pipe has a larger coverage area than the second cooling pipe, and in conjunction with the heat conduction plate, the contact area with the lubricating oil in the oil guide pipe can be increased, thereby improving the heat exchange efficiency. This allows the oil temperature in the middle of the shaft to be cooled more effectively, ensuring that the oil temperature is maintained at a suitable level. This effectively solves the problem in the prior art where the heat dissipation of the spindle is not timely during high-speed operation, which seriously affects the thermal stability, and greatly improves the stability of the hydrostatic spindle.

[0015] 2. A sealing bushing is fixedly connected to the right side of the outer casing, and a plate heat exchanger is fixedly connected to the left side. A circulating water pipe is fixedly connected to the plate heat exchanger, and an oil pump is fixedly connected to the top. An oil inlet pipe is fixedly connected to the oil inlet end of the oil pump. Through the cooperation of the oil pump and the plate heat exchanger, the lubricating oil can be pre-cooled before entering the oil guide pipe, which further reduces the initial temperature of the lubricating oil, improves the overall cooling effect, and helps maintain the stability of the hydrostatic spindle. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the first cooling pipe structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0020] Figure 4 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Outer shell; 101. Rotating shaft; 2. Oil temperature control mechanism; 201. First cooling pipe; 202. Second cooling pipe; 203. Heat-conducting plate; 204. Oil guide pipe; 205. Gap; 206. Oil return pipe; 207. Oil outlet pipe; 3. First water outlet pipe; 4. Second water outlet pipe; 5. Sealing bushing; 6. First water inlet; 601. First transition groove; 7. Second water inlet; 701. Second transition groove; 8. Plate heat exchanger; 9. Oil inlet pipe; 901. Oil delivery pipe; 10. Oil pump. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] This utility model provides, for example Figure 1-4The high-stability rotating mechanism for hydrostatic spindles shown includes a housing 1, a rotating shaft 101 inside the housing 1, and an oil temperature control mechanism 2 outside the rotating shaft 101. The oil temperature control mechanism 2 includes a first cooling pipe 201 fixedly connected inside the housing 1, a second cooling pipe 202 attached to the middle portion of the first cooling pipe 201, and the second cooling pipe 202 fixedly connected inside the housing 1. Both the first cooling pipe 201 and the second cooling pipe 202 are spiral-shaped, and the coverage area of ​​the first cooling pipe 201 is larger than that of the second cooling pipe 202. A heat-conducting plate 203 is fixedly connected to the inner wall of the first cooling pipe 201 and the second cooling pipe 202. An oil guide pipe 204 is provided inside the heat-conducting plate 203. Several sets of oil injection ports are provided on the inner side of the oil guide pipe 204. A gap 205 is provided between the oil guide pipe 204 and the rotating shaft 101, and the gap 205 is located inside the outer casing 1. The two ends of the gap 205 are connected to the return oil pipe 206. Through the cooperation of the first cooling pipe 201 and the second cooling pipe 202, the oil temperature in the middle of the rotating shaft 101 is cooled more significantly to ensure that the oil temperature is maintained at a suitable level. The return oil pipe 206 is located inside the outer casing 1. The right end of the return oil pipe 206 is connected to the oil outlet pipe 207, and the oil outlet pipe 207 is fixedly connected to the surface of the outer casing 1. The lubricating oil is discharged through the cooperation of the return oil pipe 206 and the oil outlet pipe 207 for easy collection and recycling. The top of the outer casing 1 is fixedly connected to the first inlet... The bottom end of the first water inlet 6 is connected to a first transition groove 601, which is located inside the outer casing 1. The first transition groove 601 is connected to the second cooling pipe 202, and the connection point between the first transition groove 601 and the second cooling pipe 202 is located at the center of the second cooling pipe 202. Through the cooperation of the first transition groove 601 and the second cooling pipe 202, the center of the rotating shaft 101 is cooled first. The top end of the outer casing 1 is fixedly connected to a second water inlet 7, the bottom end of which is connected to a second transition groove 701, which is located inside the outer casing 1. The second transition groove 701 is connected to the first cooling pipe 201, and the connection point between the second transition groove 701 and the first cooling pipe 201 is located at the center of the second cooling pipe 202. One end of the first cooling pipe 201 forms a cross-current heat exchange with the first cooling pipe 201 through the cooperation of the second transition groove 701. Through the cooperation of the outer shell 1 and the oil temperature control mechanism 2, by setting the first cooling pipe 201 and the second cooling pipe 202, both of which are spiral in shape and the coverage area of ​​the first cooling pipe 201 is larger than that of the second cooling pipe 202, and in conjunction with the heat conduction plate 203, the contact area with the lubricating oil in the oil guide pipe 204 can be increased, thereby improving the heat exchange efficiency. This allows the oil temperature in the middle of the rotating shaft 101 to be cooled more effectively, ensuring that the oil temperature is maintained at a suitable level. This effectively solves the problem in the prior art where the heat dissipation of the spindle is not timely and seriously affects the thermal stability during high-speed operation, and greatly improves the stability of the hydrostatic spindle.

[0025] Refer to the instruction manual appendix Figure 1-4The first cooling pipe 201 has a first water outlet pipe 3 connected to its right side, and the second cooling pipe 202 has a second water outlet pipe 4 connected to its right side. Both the first and second water outlet pipes 3 and 4 are fixedly connected to the right side of the outer casing 1. Cooling water from the first cooling pipe 201 and the second cooling pipe 202 is discharged through the first and second water outlet pipes 3 and 4 for easy collection and recycling. A sealing bushing 5 is fixedly connected to the right end of the outer casing 1, and a plate heat exchanger 8 is fixedly connected to the left side of the outer casing 1. A circulating water pipe is fixedly connected to the plate heat exchanger 8, and an oil pump 10 is fixedly connected to the top of the plate heat exchanger 8. An oil inlet pipe 9 is fixedly connected to the oil inlet end of the oil pump 10, thus pre-cooling the lubricating oil through the cooperation of the oil pump 10 and the plate heat exchanger 8. An oil delivery pipe 90 is connected to the bottom end of the oil inlet pipe 9. 1. An oil supply pipe 901 is located inside the outer casing 1 and the plate heat exchanger 8. The oil supply pipe 901 is connected to the oil guide pipe 204. Through the cooperation of the oil supply pipe 901 and the oil guide pipe 204, lubricating oil enters the oil guide pipe 204 and forms an oil film inside the gap 205 through the oil guide pipe 204. A sealing bushing 5 is fixedly connected to the right side of the outer casing 1, and a plate heat exchanger 8 is fixedly connected to the left side. A circulating water pipe is fixedly connected to the plate heat exchanger 8, and an oil pump 10 is fixedly connected to the top. An oil inlet pipe 9 is fixedly connected to the oil inlet end of the oil pump 10. Through the cooperation of the oil pump 10 and the plate heat exchanger 8, the lubricating oil can be pre-cooled before entering the oil guide pipe 204, which further reduces the initial temperature of the lubricating oil, improves the overall cooling effect, and helps maintain the stability of the hydrostatic spindle.

[0026] The working principle of this practical application is as follows:

[0027] Refer to the instruction manual appendix Figure 1-4When the shaft 101 rotates, the oil pump 10 starts, drawing in lubricating oil through the oil inlet pipe 9. The lubricating oil enters the plate heat exchanger 8 for pre-cooling. The pre-cooled lubricating oil enters the oil guide pipe 204 through the oil delivery pipe 901 and is sprayed out from several sets of oil spray nozzles opened on the inner side of the oil guide pipe 204, forming an oil film in the gap 205 between the shaft 101 and the oil guide pipe 204, which lubricates and supports the shaft 101. The lubricating oil after use flows out through the return oil pipe 206, which connects the two ends of the gap 205, and is then discharged through the oil outlet pipe 207 for collection and recycling. High-pressure cooling water enters from the first water inlet 6, passes through the first transition groove 601, and enters the second cooling pipe 202 to cool the lubricating oil in the oil guide pipe 204. Since the connection point is located at the center of the second cooling pipe 202, the center of the shaft 101 is preferentially cooled. Meanwhile, high-pressure cooling water enters from the second inlet 7, passes through the second transition groove 701, and enters the first cooling pipe 201, forming a cross-current counter-current heat exchange with the cooling water in the second cooling pipe 202, further improving the cooling effect. The cooled water after heat exchange is discharged through the first outlet pipe 3 and the second outlet pipe 4 respectively for collection and recycling. During the high-speed operation of the spindle, the presence of an oil film in the gap 205 between the rotating shaft 101 and the oil guide pipe 204 reduces friction and wear. At the same time, the oil temperature control mechanism 2 effectively controls the temperature of the lubricating oil through the action of the first cooling pipe 201, the second cooling pipe 202, and the heat conduction plate 203, ensuring that the oil temperature is maintained at a suitable level, thereby improving the stability and reliability of the hydrostatic spindle and ensuring that the spindle can operate stably for a long time.

[0028] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-stability rotating mechanism for hydrostatic spindles, comprising a housing (1), characterized in that: The housing (1) has a rotating shaft (101) inside, and an oil temperature control mechanism (2) is provided on the outside of the rotating shaft (101). The oil temperature control mechanism (2) includes a first cooling pipe (201) fixedly connected to the inside of the housing (1). A second cooling pipe (202) is attached to the middle part of the first cooling pipe (201). The second cooling pipe (202) is fixedly connected to the inside of the housing (1). Both the first cooling pipe (201) and the second cooling pipe (202) are spiral-shaped, and the first cooling pipe (201) is spiral-shaped. The coverage area of ​​the first cooling pipe (201) is larger than that of the second cooling pipe (202). The inner walls of the first cooling pipe (201) and the second cooling pipe (202) are fixedly connected to a heat-conducting plate (203). An oil guide pipe (204) is provided on the inner side of the heat-conducting plate (203), and several sets of oil injection ports are opened on the inner side of the oil guide pipe (204). A gap (205) is provided between the oil guide pipe (204) and the rotating shaft (101), and the gap (205) is opened inside the outer shell (1). The two ends of the gap (205) are connected to an oil return pipe (206).

2. The high-stability rotating mechanism for hydrostatic spindles according to claim 1, characterized in that: The return oil pipe (206) is located inside the outer casing (1), and the right end of the return oil pipe (206) is connected to the outlet oil pipe (207), which is fixedly connected to the surface of the outer casing (1).

3. The high-stability rotating mechanism for hydrostatic spindles according to claim 1, characterized in that: The top of the outer shell (1) is fixedly connected to a first water inlet (6), the bottom of the first water inlet (6) is connected to a first transition groove (601), and the first transition groove (601) is opened inside the outer shell (1). The first transition groove (601) is connected to a second cooling pipe (202), and the connection between the first transition groove (601) and the second cooling pipe (202) is located at the center of the second cooling pipe (202).

4. The high-stability rotating mechanism for hydrostatic spindles according to claim 1, characterized in that: The top of the outer shell (1) is fixedly connected to a second water inlet (7), the bottom of the second water inlet (7) is connected to a second transition groove (701), and the second transition groove (701) is opened inside the outer shell (1). The second transition groove (701) is connected to the first cooling pipe (201), and the connection between the second transition groove (701) and the first cooling pipe (201) is located at the center of the first cooling pipe (201).

5. A high-stability rotating mechanism for hydrostatic spindles according to claim 1, characterized in that: The first cooling pipe (201) is connected to the right side of the first water outlet pipe (3), and the second cooling pipe (202) is connected to the right side of the second water outlet pipe (4). The first water outlet pipe (3) and the second water outlet pipe (4) are both fixedly connected to the right side of the outer shell (1).

6. A high-stability rotating mechanism for hydrostatic spindles according to claim 1, characterized in that: A sealing bushing (5) is fixedly connected to the right end of the outer shell (1), a plate heat exchanger (8) is fixedly connected to the left side of the outer shell (1), a circulating water pipe is fixedly connected to the plate heat exchanger (8), the top end of the plate heat exchanger (8) is fixedly connected to the oil pump (10), and an oil inlet pipe (9) is fixedly connected to the oil inlet end of the oil pump (10).

7. A high-stability rotating mechanism for hydrostatic spindles according to claim 6, characterized in that: The bottom end of the oil inlet pipe (9) is connected to the oil delivery pipe (901), which is located inside the outer shell (1) and the plate heat exchanger (8). The oil delivery pipe (901) is connected to the oil guide pipe (204).

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