Split type main shaft structure

Abstract

The utility model relates to the technical field of main shaft structures, and discloses a split type main shaft structure which comprises a main shaft. The main shaft is formed by assembling a shaft center and a main shaft flange plate; the sleeve sleeves the outer side of the main shaft; the axis and the spindle flange plate are coaxially arranged left and right and are in contact connection with the close end surfaces; a rear sealing adjusting spacer bush, a first cylindrical roller bearing and a rear sealing nut sequentially sleeve the surface of the left end of the axis from right to left, a rear end cover sleeves the outer side of the rear sealing nut, and the inner side of the rear end cover and the rear sealing nut are rotationally arranged in a clamped mode. The surface of the right end of the axis is sequentially sleeved with a locking nut, an angular contact thrust ball bearing and a second cylindrical roller bearing from left to right. According to the split type main shaft structure, the split type main shaft structure is designed, the main shaft structure is composed of the shaft center and the main shaft flange plate, and by locking the main shaft flange plate and the shaft center, bearings only need to be detached from the two ends to be replaced when the bearings are replaced; the split type main shaft structure is convenient to disassemble and assemble, and the material cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of main shaft structures, in particular to a split main shaft structure. Background Art

[0002] The traditional spindle is a stepped shaft with one end larger and the other end smaller. In the electric spindle of the grinding machine, the bearings need to be replaced regularly due to the limited life of the electric spindle.

[0003] When replacing the bearings, it is necessary to disassemble them from the small end. Since a permanent magnet motor is embedded in the spindle, the permanent magnet motor contains permanent magnets and is magnetic, making it inconvenient to disassemble the spindle. Therefore, a split spindle structure is designed that allows the bearings to be replaced without disassembling the permanent magnet motor. Utility Model Content

[0004] The purpose of the present utility model is to provide a split spindle structure to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present utility model provides the following technical solutions: a split spindle structure, comprising a spindle;

[0006] The main shaft is assembled from an axis and a main shaft flange;

[0007] and a sleeve sleeved on the outer side of the main shaft;

[0008] The axis and the main shaft flange are coaxially arranged on the left and right sides, and the axis and the main shaft flange are close to each other and in contact with each other;

[0009] The left end surface of the shaft is provided with a rear sealing adjustment sleeve, a cylindrical roller bearing 1 and a rear sealing nut in sequence from right to left;

[0010] A rear end cover is sleeved on the outer side of the rear sealing nut, and the inner side of the rear end cover is engaged and rotatably connected with the rear sealing nut;

[0011] The right end surface of the shaft is provided with a locking nut, an angular contact thrust ball bearing and a second cylindrical roller bearing in sequence from left to right;

[0012] The inner side surfaces of the angular contact thrust ball bearing and the cylindrical roller bearing are both interference fit with the axis surface, and the inner wall of the locking nut is threadedly connected to the axis surface;

[0013] A front end cover is provided on the right side of the sleeve, the front end cover is sleeved on the outside of the shaft center, the left side of the front end cover is in contact with the side surface of the sleeve, a front seal adjustment sleeve is provided on the right side of the front end cover, the front seal adjustment sleeve is fixedly sleeved on the outside of the shaft center, the outer side of the front seal adjustment sleeve is rotatably engaged with the inner side of the front end cover, and the right end face of the front seal adjustment sleeve is in extrusion contact with the side surface of the main shaft flange;

[0014] A waterproof cover is sleeved on the outer side of the main shaft flange, and a water outlet is opened on the lower end surface of the waterproof cover.

[0015] Preferably, a hexagon socket flat-end set screw is horizontally arranged on the right side of the main shaft flange, and the left end of the hexagon socket flat-end set screw passes through the main shaft flange and extends to the inside of the shaft center. The surface of the main shaft flange is threadedly connected to the shaft center and the inner wall of the main shaft flange.

[0016] Preferably, the inner side surface of the rear sealing nut is threadedly connected to the main shaft surface, the axis surface is provided with a groove corresponding to the position of the rear sealing adjustment sleeve, the inner side surface of the rear sealing adjustment sleeve is clamped with the inner wall of the groove, and the side surface of the rear sealing adjustment sleeve and the side surface of the rear sealing nut are in extrusion contact with the side surface of an inner ring of the cylindrical roller bearing.

[0017] Preferably, the outer side surface of the rear end cover is threadedly connected to the inner side surface of the sleeve, an outer surface of the cylindrical roller bearing is interference fit with the inner wall of the sleeve, and a sleeve nut is threadedly sleeved on the outer side of the left end of the sleeve.

[0018] Preferably, the side surface of the locking nut is in extrusion contact with the side surface of the angular contact thrust ball bearing, and the outer side surfaces of the angular contact thrust ball bearing and the cylindrical roller bearing are interference fit with the inner wall of the sleeve.

[0019] Preferably, an O-ring is provided between the outer side of the front end cover and the sleeve, and the O-ring is in an extruded state.

[0020] Preferably, a threaded hole is provided on the side surface of the upper end of the spindle flange, an end face key is provided at the opening of the threaded hole, a hexagon socket screw is provided on the right side of the threaded hole, and the hexagon socket screw passes through the end face key thread and extends to the inside of the threaded hole.

[0021] Preferably, an arc-shaped water leakage connection block is provided below the main shaft flange at the water outlet position below the waterproof cover, and a hexagon socket head screw is provided on the right side of the water leakage connection block. The left end of the hexagon socket head screw passes through the thread of the water leakage connection block and extends to the inside of the sleeve.

[0022] Compared with the existing technology, the beneficial effects of the present invention are: the split spindle structure is designed with a split spindle structure, and the spindle structure consists of an axis and a spindle flange. By locking the spindle flange and the axis, when replacing the bearing, it is only necessary to disassemble and replace the bearing from both ends; the split spindle structure is not only easy to disassemble and assemble, but also can reduce material costs and facilitate processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0024] Figure 2 This is a three-dimensional cross-sectional view of the overall structure of the utility model;

[0025] Figure 3 This is a three-dimensional schematic diagram of the internal structure of the utility model;

[0026] Figure 4 This is a schematic diagram of the overall front structure of the utility model;

[0027] Figure 5 It is a schematic diagram of the partial structure on the right side of the overall front of the utility model.

[0028] In the figure: main shaft 1, axis 101, main shaft flange 102, rear seal adjustment sleeve 2, cylindrical roller bearing 1 3, rear seal nut 4, rear end cover 5, sleeve nut 6, angular contact thrust ball bearing 7, cylindrical roller bearing 2 8, lock nut 9, front end cover 10, O-ring 11, front seal adjustment sleeve 12, sleeve 13, waterproof cover 14, end face key 15, hexagon socket screw 16, hexagon socket flat end set screw 17, leakage connection block 18, hexagon socket cylindrical head screw 19. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Example:

[0031] See also Figure 1-Figure 5 , the utility model provides a technical solution: a split spindle structure, including a spindle 1;

[0032] The main shaft 1 is assembled from the shaft core 101 and the main shaft flange 102;

[0033] and a sleeve 13 sleeved on the outside of the main shaft 1;

[0034] The shaft 101 and the main shaft flange 102 are coaxially arranged on the left and right sides, and the shaft 101 and the main shaft flange 102 are close to each other and in contact with each other.

[0035] A hexagon socket flat-end set screw 17 is horizontally arranged on the right side of the spindle flange 102. The left end of the hexagon socket flat-end set screw 17 passes through the spindle flange 102 and extends into the interior of the shaft 101. The surface of the spindle flange 102 is threadedly connected to the shaft 101 and the inner wall of the spindle flange 102.

[0036] The left end surface of the shaft 101 is provided with a rear seal adjustment sleeve 2, a cylindrical roller bearing 3 and a rear seal nut 4 in sequence from right to left;

[0037] The inner side of the rear sealing nut 4 is threadedly connected to the surface of the main shaft, and a groove is provided on the surface of the shaft center 101 corresponding to the position of the rear sealing adjustment sleeve 2. The inner side of the rear sealing adjustment sleeve 2 is clamped with the inner wall of the groove, and the side surfaces of the rear sealing adjustment sleeve 2 and the rear sealing nut 4 are in extrusion contact with the side surface of the inner ring of the cylindrical roller bearing 3;

[0038] The rear end cover 5 is sleeved on the outside of the rear sealing nut 4, and the inner side of the rear end cover 5 is engaged and rotated with the rear sealing nut 4. The outer side of the rear end cover 5 is threadedly connected with the inner side of the sleeve 13. The outer surface of the cylindrical roller bearing 3 is interference fit with the inner wall of the sleeve 13. The sleeve nut 6 is threadedly sleeved on the outer side of the left end of the sleeve 13;

[0039] The right end surface of the shaft 101 is provided with a locking nut 9, an angular contact thrust ball bearing 7, and a second cylindrical roller bearing 8 in sequence from left to right. The side surface of the locking nut 9 is in squeeze contact with the side surface of the angular contact thrust ball bearing 7, and the outer surfaces of the angular contact thrust ball bearing 7 and the second cylindrical roller bearing 8 are in interference fit with the inner wall of the sleeve 13.

[0040] The inner surfaces of the angular contact thrust ball bearing 7 and the cylindrical roller bearing 8 are interference fit with the surface of the shaft 101, and the inner wall of the locking nut 9 is threadedly connected to the surface of the shaft 101;

[0041] A front end cover 10 is provided on the right side of the sleeve 13. The front end cover 10 is sleeved on the outside of the shaft center 101. The left side of the front end cover 10 is in contact with the side of the sleeve 13. A front sealing adjustment sleeve 12 is provided on the right side of the front end cover 10. The front sealing adjustment sleeve 12 is fixedly sleeved on the outside of the shaft center 101. The outer side of the front sealing adjustment sleeve 12 is rotatably engaged with the inner side of the front end cover 10. The right end face of the front sealing adjustment sleeve 12 is in extrusion contact with the side of the main shaft flange 102. An O-ring 11 is provided between the outer side of the front end cover 10 and the sleeve 13. The O-ring 11 is in an extruded state. A threaded hole is provided on the side surface of the upper end of the main shaft flange 102. An end face key 15 is provided at the opening of the threaded hole. A hexagon socket screw 16 is provided on the right side of the threaded hole. The hexagon socket screw 16 passes through the end face key 15 and extends to the inside of the threaded hole through the thread.

[0042] A waterproof cover 14 is provided on the outer side of the main shaft flange 102, and a water outlet is provided on the lower end surface of the waterproof cover 14;

[0043] An arc-shaped water leakage connection block 18 is provided below the main shaft flange 102 at the water outlet position below the waterproof cover 14. A hexagon socket head screw 19 is provided on the right side of the water leakage connection block 18. The left end of the hexagon socket head screw 19 passes through the water leakage connection block 18 and extends into the interior of the sleeve 13 through a thread.

[0044] Furthermore, this embodiment designs a split spindle structure, and the spindle structure consists of an axis 101 and a spindle flange 102. By locking the spindle flange 102 and the axis 101, when replacing the bearing, it is only necessary to disassemble and replace the bearing from both ends; the split spindle structure is not only easy to disassemble and assemble, but also can reduce material costs and facilitate processing.

[0045] When in use, the split spindle structure is designed to have a split spindle structure. The spindle structure consists of an axis 101 and a spindle flange 102. By locking the spindle flange 102 and the axis 101, when replacing the bearing, it is only necessary to disassemble and replace the bearing from both ends. The split spindle structure is not only easy to disassemble and assemble, but also can reduce material costs and facilitate processing.

[0046] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A split spindle structure, comprising a spindle (1); The main shaft (1) is assembled from a shaft core (101) and a main shaft flange (102); and a sleeve (13) sleeved on the outside of the main shaft (1); Its characteristics are: The axis (101) and the main shaft flange (102) are coaxially arranged on the left and right sides, and the axis (101) and the main shaft flange (102) are close to each other and in contact with each other at their end faces; The left end surface of the shaft (101) is provided with a rear sealing adjustment sleeve (2), a cylindrical roller bearing (3) and a rear sealing nut (4) in sequence from right to left; The rear sealing nut (4) is sleeved with a rear end cover (5) on the outside, and the rear end cover (5) is rotatably engaged with the rear sealing nut (4) on the inside. The right end surface of the axis (101) is provided with a locking nut (9), an angular contact thrust ball bearing (7) and a cylindrical roller bearing (8) in sequence from left to right; The inner side surfaces of the angular contact thrust ball bearing (7) and the cylindrical roller bearing (8) are both interference fit with the surface of the shaft (101), and the inner wall of the locking nut (9) is threadedly connected to the surface of the shaft (101); A front end cover (10) is provided on the right side of the sleeve (13), the front end cover (10) is sleeved on the outside of the shaft (101), the left side of the front end cover (10) is in contact with the side of the sleeve (13), a front sealing adjustment sleeve (12) is provided on the right side of the front end cover (10), the front sealing adjustment sleeve (12) is fixedly sleeved on the outside of the shaft (101), the outer side of the front sealing adjustment sleeve (12) is rotatably engaged with the inner side of the front end cover (10), and the right end face of the front sealing adjustment sleeve (12) is in extrusion contact with the side of the main shaft flange (102); A waterproof cover (14) is sleeved on the outer side of the main shaft flange (102), and a water outlet hole is opened on the lower end surface of the waterproof cover (14).

2. The split spindle structure according to claim 1, characterized in that: A hexagon socket flat-end set screw (17) is horizontally arranged on the right side of the main shaft flange (102), and the left end of the hexagon socket flat-end set screw (17) passes through the main shaft flange (102) and extends to the inside of the shaft (101), and the surface of the main shaft flange (102) is threadedly connected to the shaft (101) and the inner wall of the main shaft flange (102).

3. The split spindle structure according to claim 1, characterized in that: The inner side surface of the rear sealing nut (4) is threadedly connected to the main shaft surface, and a groove is provided on the surface of the shaft center (101) corresponding to the position of the rear sealing adjustment sleeve (2). The inner side surface of the rear sealing adjustment sleeve (2) is clamped with the inner wall of the groove, and the side surface of the rear sealing adjustment sleeve (2) and the side surface of the rear sealing nut (4) are in extrusion contact with the side surface of the inner ring of the cylindrical roller bearing (3).

4. The split spindle structure according to claim 1, characterized in that: The outer side surface of the rear end cover (5) is threadedly connected to the inner side surface of the sleeve (13), the outer surface of the cylindrical roller bearing (3) is interference-fitted with the inner wall of the sleeve (13), and a sleeve nut (6) is threadedly sleeved on the outer side of the left end of the sleeve (13).

5. The split spindle structure according to claim 1, characterized in that: The side surface of the locking nut (9) is in extrusion contact with the side surface of the angular contact thrust ball bearing (7), and the outer side surfaces of the angular contact thrust ball bearing (7) and the cylindrical roller bearing (8) are interference fit with the inner wall of the sleeve (13).

6. The split spindle structure according to claim 1, characterized in that: An O-ring (11) is provided between the outer side of the front end cover (10) and the sleeve (13), and the O-ring (11) is in an extruded state.

7. The split spindle structure according to claim 1, characterized in that: A threaded hole is provided on the side surface of the upper end of the spindle flange (102), an end face key (15) is provided at the opening of the threaded hole, a hexagon socket screw (16) is provided on the right side of the threaded hole, and the hexagon socket screw (16) passes through the end face key (15) and extends into the interior of the threaded hole.

8. The split spindle structure according to claim 1, characterized in that: A water leakage connection block (18) in the shape of an arc plate is provided below the main shaft flange (102) at a position corresponding to the water outlet below the waterproof cover (14); a hexagon socket head screw (19) is provided on the right side of the water leakage connection block (18); the left end of the hexagon socket head screw (19) passes through the water leakage connection block (18) and extends into the interior of the sleeve (13) through a thread.

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