Dynamic and static pressure grinding wheel spindle structure

Abstract

The utility model discloses a dynamic and static pressure grinding wheel spindle structure, which belongs to the technical field of machining and comprises a dynamic and static pressure bearing assembly, a conical hollow barrel is mounted on the outer wall of the dynamic and static pressure bearing assembly, and a circular magnet is fixedly connected to the inner wall of the conical hollow barrel. A screw rod is fixedly connected to the inner wall of the conical hollow barrel, a coarse filter screen is installed at the bottom of the circular magnet, and a fine filter screen is fixedly connected to the inner wall of the cover head. Compared with the prior art, after oil liquid in the dynamic and static pressure shaft assembly flows into the conical hollow barrel through the second oil inlet, the spiral rod in the conical hollow barrel can carry the oil liquid to flow out downwards from the inner wall of the conical hollow barrel, and at the moment, the round magnet connected with the conical hollow barrel can suck away scrap iron in the oil liquid; the coarse filter screen in the conical hollow barrel can preliminarily filter large-particle impurities, and the fine filter screen in the cover head can further filter small-particle impurities.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, and more specifically to a dynamic and static pressure grinding wheel shaft structure. Background Art

[0002] In today's mechanical processing field, the grinding wheel spindle, as an important processing tool, plays an important role in the mechanical processing field. Among them, the unloading design of the dynamic and static grinding wheel spindle can effectively distribute the working load reasonably, reduce the force on key parts, and provide more stable support and high-precision rotation for the processing process. Therefore, it is essential to control the various structures and technologies of the unloading dynamic and static grinding wheel spindle.

[0003] In the existing dynamic and static pressure grinding wheel shafts, impurities may exist in the oil, which may cause the dynamic and static pressure grinding wheel shafts to get stuck, forcing the machining process to be interrupted. This situation requires workers to spend time and energy to troubleshoot and solve the problem during mechanical processing, which will lead to reduced processing efficiency and increased operating costs, and cannot meet the user's needs for efficient processing and stable operation.

[0004] Therefore, we proposed a dynamic and static pressure grinding wheel shaft structure to solve the above problems. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] In view of the problems existing in the prior art, the purpose of the utility model is to provide a dynamic and static pressure grinding wheel shaft structure, which allows the oil in the dynamic and static pressure shaft assembly to flow into the interior of the conical hollow barrel through the second oil inlet. The oil will then flow downward from the outer wall of the spiral rod due to pressure. At this time, the circular magnet will absorb the iron filings in the oil, the coarse filter will initially filter out large particles of impurities, and the fine filter can further filter out small particles of impurities, making the oil cleaner, thereby reducing the situation where the dynamic and static pressure grinding wheel shaft is stuck due to oil impurities, and improving the stability and reliability of the operation of the dynamic and static pressure grinding wheel shaft.

[0007] 2. Technical solution

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] A dynamic and static pressure grinding wheel shaft structure comprises a grinding wheel main shaft, a belt pulley is fixedly connected to the left side of the outer wall of the grinding wheel main shaft, and a grinding wheel piece is fixedly connected to the end of the grinding wheel main shaft away from the belt pulley.

[0010] It also includes a dynamic and static pressure bearing assembly, which is rotatably connected to the grinding wheel spindle.

[0011] A conical hollow barrel is installed on the outer wall of the dynamic and static pressure bearing assembly, a second oil inlet is opened at the upper end of the conical hollow barrel, a circular magnet is fixedly connected to the inner wall of the conical hollow barrel, a spiral rod is fixedly connected to the inner wall of the conical hollow barrel, the spiral rod is located inside the circular magnet, a coarse filter is installed at the bottom of the circular magnet, the coarse filter is located inside the conical hollow barrel, a cover is installed at the lower end of the conical hollow barrel, an external thread is opened on the outer wall of the cover, the cover is threadedly connected to the conical hollow barrel through the external thread, a fine filter is fixedly connected to the inner wall of the cover, and a second oil outlet is opened at the lower end of the cover.

[0012] Furthermore, the dynamic and static pressure bearing assembly includes a bearing sleeve, which is rotatably connected to the grinding wheel spindle. The grinding wheel spindle is located on the inner wall of the bearing sleeve, a rectangular groove is provided inside the bearing sleeve, a first oil inlet is provided on the outer wall of the bearing sleeve, and a first oil outlet is provided on the side of the bearing sleeve away from the first oil inlet, and the first oil outlet is connected to the second oil inlet.

[0013] Furthermore, it also includes an elastic unloading component, which is rotatably connected to the grinding wheel spindle. The elastic unloading component includes a core shaft, the inner wall of the core shaft is rotatably connected to the outer wall of the grinding wheel spindle, the outer wall of the core shaft is fixedly connected to a plurality of springs, one end of the spring away from the core shaft is fixedly connected to a sleeve, and the outer wall of the sleeve is fixedly connected to an elastic rubber ring.

[0014] Furthermore, it also includes a supporting component, which is located on the outer wall of the bearing sleeve. The supporting component includes a plurality of legs, and the plurality of legs are fixedly connected to the outer wall of the bearing sleeve. The plurality of legs are distributed in a rectangular shape, and the lower ends of the plurality of legs are fixedly connected to the same hollow plate, and the inner wall of the hollow plate is fixedly connected to the outer wall of the conical hollow barrel.

[0015] Furthermore, the coarse filter is threadedly connected with bolts, and the coarse filter is fixedly connected to the spiral rod through the bolts.

[0016] Furthermore, the gap between the rectangular groove and the grinding wheel spindle is wedge-shaped.

[0017] 3. Beneficial effects

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] (1) In this scheme, when the grinding wheel shaft is working, after the oil in the dynamic and static pressure shaft assembly flows into the conical hollow barrel through the second oil inlet, the oil will flow downward from the outer wall of the spiral rod due to pressure. At this time, the circular magnet connected to the conical hollow barrel will absorb the iron filings in the oil, and the coarse filter inside the conical hollow barrel will initially filter out large particles of impurities. The fine filter inside the cover head can further filter out small particles of impurities, making the oil cleaner, thereby reducing the situation where the dynamic and static pressure grinding wheel shaft is stuck due to oil impurities, improving the stability and reliability of the operation of the dynamic and static pressure grinding wheel shaft, and increasing processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional diagram of the utility model;

[0021] Figure 2 It is a bottom view of the utility model;

[0022] Figure 3 It is a partial exploded view of the utility model;

[0023] Figure 4 It is a partial structural diagram of the utility model;

[0024] Figure 5 It is a structural sectional view of the utility model.

[0025] Description of the numbers in the figure:

[0026] 1. Grinding wheel spindle; 2. Dynamic and static pressure bearing assembly; 201. Bearing sleeve; 202. First oil inlet; 203. First oil outlet; 204. Rectangular groove; 3. Elastic unloading assembly; 301. Elastic rubber ring; 302. Bushing; 303. Spring; 304. Mandrel; 4. Pulley; 5. Grinding wheel; 6. Support assembly; 601. Hollow plate; 602. Leg; 7. Conical hollow barrel; 8. Round magnet; 9. Screw rod; 10. Coarse filter; 11. Fine filter; 12. Cover; 13. External thread; 14. Bolt; 15. Second oil outlet; 16. Second oil inlet. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention specification; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments of the present invention are within the scope of protection of the present invention.

[0028] See also Figure 1-Figure 5 A dynamic and static pressure grinding wheel shaft structure includes a grinding wheel spindle 1, a dynamic and static pressure bearing assembly 2, an elastic unloading assembly 3, and a support assembly 6.

[0029] A belt pulley 4 is fixedly connected to the left side of the outer wall of the grinding wheel main shaft 1 , and a grinding wheel piece 5 is fixedly connected to the end of the grinding wheel main shaft 1 away from the belt pulley 4 .

[0030] The static and dynamic pressure bearing assembly 2 is rotatably connected to the grinding wheel spindle 1 .

[0031] A conical hollow barrel 7 is installed on the outer wall of the dynamic and static pressure bearing assembly 2, and a second oil inlet 16 is opened at the upper end of the conical hollow barrel 7, a circular magnet 8 is fixedly connected to the inner wall of the conical hollow barrel 7, a spiral rod 9 is fixedly connected to the inner wall of the conical hollow barrel 7, and the spiral rod 9 is located inside the circular magnet 8, a coarse filter 10 is installed at the bottom of the circular magnet 8, a bolt 14 is threadedly connected to the coarse filter 10, and the coarse filter 10 is fixedly connected to the spiral rod 9 through the bolt 14, and the coarse filter 10 is located inside the conical hollow barrel 7, a cover head 12 is installed at the lower end of the conical hollow barrel 7, an external thread 13 is opened on the outer wall of the cover head 12, and the cover head 12 is threadedly connected to the conical hollow barrel 7 through the external thread 13, a fine filter 11 is fixedly connected to the inner wall of the cover head 12, and a second oil outlet 15 is opened at the lower end of the cover head 12.

[0032] Specifically, after the oil in the dynamic and static pressure bearing assembly 2 flows into the interior of the conical hollow barrel 7 through the second oil inlet 16, the spiral rod 9 inside the conical hollow barrel 7 will carry the oil to flow downward from the inner wall of the conical hollow barrel 7. At this time, the circular magnet 8 connected to the conical hollow barrel 7 will absorb the iron filings in the oil, and the coarse filter 10 inside the conical hollow barrel 7 will preliminarily filter large particles of impurities. The fine filter 11 inside the cover 12 can further filter small particles of impurities. When it is necessary to clean the impurities inside the conical hollow barrel 7, the impurities on the fine filter 11 can be cleaned by unscrewing the cover 12, and the impurities and iron filings in the coarse filter 10 and the circular magnet 8 can be cleaned by unscrewing the bolt 14.

[0033] In one embodiment, the dynamic and static pressure bearing assembly 2 includes a bearing sleeve 201, the bearing sleeve 201 is rotatably connected to the grinding wheel spindle 1, the grinding wheel spindle 1 is located on the inner wall of the bearing sleeve 201, a rectangular groove 204 is provided inside the bearing sleeve 201, and the gap between the rectangular groove 204 and the grinding wheel spindle 1 is wedge-shaped, a first oil inlet 202 is provided on the outer wall of the bearing sleeve 201, and a first oil outlet 203 is provided on the side of the bearing sleeve 201 away from the first oil inlet 202, and the first oil outlet 203 is connected to the second oil inlet. The oil port 16 is connected. When the oil enters the bearing sleeve 201 through the first oil inlet 202, the oil will form a static pressure oil film in the rectangular groove 204 inside the bearing sleeve 201, wrapping the grinding wheel spindle 1, so that the grinding wheel spindle 1 will not produce unnecessary wear during processing, and when the grinding wheel spindle 1 is working, the flow rate of the oil will change in the wedge-shaped gap, causing the pressure of the oil to increase, and the oil will form a dynamic pressure oil film, so that the grinding wheel spindle 1 can better withstand external loads when rotating.

[0034] In one embodiment, the elastic unloading component 3 is rotatably connected to the grinding wheel spindle 1, and the elastic unloading component 3 includes a core shaft 304, the inner wall of the core shaft 304 is rotatably connected to the outer wall of the grinding wheel spindle 1, and the outer wall of the core shaft 304 is fixedly connected with multiple springs 303, and the end of the spring 303 away from the core shaft 304 is fixedly connected with a sleeve 302, and the outer wall of the sleeve 302 is fixedly connected with an elastic rubber ring 301. The spring 303 on the outer wall of the core shaft 304 can buffer the shaking generated by the grinding wheel spindle 1 during operation, and then the elastic force generated by the spring 303 can be eliminated through the elastic rubber ring 301, thereby reducing the wear of the grinding wheel spindle 1.

[0035] In one embodiment, the support assembly 6 is located on the outer wall of the bearing sleeve 201, and the support assembly 6 includes a plurality of legs 602, and the plurality of legs 602 are fixedly connected to the outer wall of the bearing sleeve 201, and the plurality of legs 602 are distributed in a rectangular shape, and the lower ends of the plurality of legs 602 are fixedly connected to the same hollow plate 601, and the inner wall of the hollow plate 601 is fixedly connected to the outer wall of the conical hollow barrel 7, and the conical hollow barrel 7 is fixed by using the legs 602 and the hollow plate 601.

[0036] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A dynamic and static pressure grinding wheel shaft structure, comprising a grinding wheel spindle (1), characterized in that: A belt pulley (4) is fixedly connected to the left side of the outer wall of the grinding wheel main shaft (1), and a grinding wheel piece (5) is fixedly connected to the end of the grinding wheel main shaft (1) away from the belt pulley (4); It also includes a dynamic and static pressure bearing assembly (2), wherein the dynamic and static pressure bearing assembly (2) is rotatably connected to the grinding wheel spindle (1); A conical hollow barrel (7) is installed on the outer wall of the dynamic and static pressure bearing assembly (2), a second oil inlet (16) is provided at the upper end of the conical hollow barrel (7), a circular magnet (8) is fixedly connected to the inner wall of the conical hollow barrel (7), a spiral rod (9) is fixedly connected to the inner wall of the conical hollow barrel (7), the spiral rod (9) is located inside the circular magnet (8), a coarse filter (10) is installed at the bottom of the circular magnet (8), the coarse filter (10) is located inside the conical hollow barrel (7), a cover (12) is installed at the lower end of the conical hollow barrel (7), an outer wall of the cover (12) is provided with an external thread (13), the cover (12) is threadedly connected to the conical hollow barrel (7) through the external thread (13), a fine filter (11) is fixedly connected to the inner wall of the cover (12), and a second oil outlet (15) is provided at the lower end of the cover (12).

2. The dynamic and static pressure grinding wheel shaft structure according to claim 1, characterized in that: The dynamic and static pressure bearing assembly (2) comprises a bearing sleeve (201), the bearing sleeve (201) being rotatably connected to a grinding wheel spindle (1), the grinding wheel spindle (1) being located on the inner wall of the bearing sleeve (201), a rectangular groove (204) being provided inside the bearing sleeve (201), a first oil inlet (202) being provided on the outer wall of the bearing sleeve (201), a first oil outlet (203) being provided on a side of the bearing sleeve (201) away from the first oil inlet (202), and the first oil outlet (203) being communicated with a second oil inlet (16).

3. The dynamic and static pressure grinding wheel shaft structure according to claim 1, characterized in that: It also includes an elastic unloading component (3), wherein the elastic unloading component (3) is rotatably connected to the grinding wheel spindle (1); The elastic unloading assembly (3) comprises a core shaft (304), the inner wall of the core shaft (304) being rotatably connected to the outer wall of the grinding wheel spindle (1), a plurality of springs (303) being fixedly connected to the outer wall of the core shaft (304), one end of the spring (303) away from the core shaft (304) being fixedly connected to a shaft sleeve (302), and the outer wall of the shaft sleeve (302) being fixedly connected to an elastic rubber ring (301).

4. The dynamic and static pressure grinding wheel shaft structure according to claim 2, characterized in that: It also includes a support assembly (6), wherein the support assembly (6) is located on the outer wall of the bearing sleeve (201); The support assembly (6) comprises a plurality of legs (602), the plurality of legs (602) being fixedly connected to the outer wall of the bearing sleeve (201), the plurality of legs (602) being distributed in a rectangular shape, the lower ends of the plurality of legs (602) being fixedly connected to the same hollow plate (601), and the inner wall of the hollow plate (601) being fixedly connected to the outer wall of the conical hollow barrel (7).

5. The dynamic and static pressure grinding wheel shaft structure according to claim 1, characterized in that: The coarse filter screen (10) is threadedly connected with a bolt (14), and the coarse filter screen (10) is fixedly connected to the spiral rod (9) via the bolt (14).

6. The dynamic and static pressure grinding wheel shaft structure according to claim 2, characterized in that: The gap between the rectangular groove (204) and the grinding wheel spindle (1) is wedge-shaped.

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