Bearing dismounting tool for high-speed and high-precision spindle motor

Abstract

The utility model relates to the technical field of motor bearing dismounting equipment, in particular to a bearing dismounting tool for a high-speed high-precision spindle motor, which comprises clamping blocks, a connecting block and a positioning ring, the two clamping blocks are connected by the connecting block, and the positioning ring is mounted on the clamping blocks; the clamping blocks are semicircular, the two semicircular clamping blocks can be folded to form a circle, a semicircular groove is formed in the circle center of each semicircular clamping block, a semicircular mounting shaft hole is formed in each semicircular groove, the two semicircular mounting shaft holes are folded to form a complete mounting shaft hole, and a semicircular boss is arranged in the semicircular groove in the upper surface of each semicircular mounting shaft hole; the positioning ring is installed in a circular groove formed by folding the two semicircular grooves, after the positioning ring is installed, the outer wall of the positioning ring is attached to the inner wall of the circular groove, and the inner wall of the positioning ring is attached to the outer surface of the bearing to be disassembled. The utility model can solve the technical problem that the prior art cannot meet the requirement of quickly disassembling bearings with different radiuses at the two ends of a high-speed and high-precision spindle motor.

Description

Technical Field

[0001] The utility model relates to the technical field of motor bearing disassembly equipment, in particular to a bearing disassembly tool for a high-speed and high-precision spindle motor. Background Art

[0002] Since the bearings at both ends of the high-speed and high-precision spindle motor are prone to wear, they need to be frequently disassembled and replaced; in actual production, a puller is generally used to directly remove the bearings from the motor shaft.

[0003] However, the prior art has the following technical problems:

[0004] 1. Since ordinary pullers can only grab the outer ring on the outer edge of the bearing, but cannot fix the inner ring in the middle of the bearing, it is easy for the puller to damage the bearing and separate the inner and outer rings of the bearing.

[0005] 2. The bearing radii at both ends of the motor are inconsistent, and the existing motor bearing disassembly and assembly equipment is generally specially designed for specific motor bearings or requires adjustment before it can be used. It cannot meet the requirements of the rapid disassembly of bearings with inconsistent radii at both ends of the high-speed and high-precision spindle motor involved in this application.

[0006] 3. Since there is usually a gap between the clamping block of the disassembly tool and the mounting shaft at the end of the motor shaft, when a puller is used to pull the disassembly tool to remove the bearing, the puller swings, causing the clamping block of the disassembly tool to swing, causing the clamping block to scratch or collide with the mounting shaft at the end of the motor shaft, causing damage to the outer surface of the mounting shaft. Utility Model Content

[0007] The utility model provides a bearing disassembly tool for a high-speed and high-precision spindle motor, which can solve the technical problem that the prior art cannot meet the requirement of fast disassembly of bearings with inconsistent radii at both ends of the high-speed and high-precision spindle motor.

[0008] This application provides the following technical solutions:

[0009] A high-speed and high-precision spindle motor bearing disassembly tool comprises a clamping block, a connecting block and a positioning ring, wherein the connecting block connects two clamping blocks, and the positioning ring is installed on the clamping block;

[0010] The clamping block is semicircular, and two semicircular clamping blocks can be closed to form a circle. A semicircular groove is opened at the center of the semicircular clamping block, and a semicircular mounting shaft hole is opened in the semicircular groove. The two semicircular mounting shaft holes are closed to form a complete mounting shaft hole.

[0011] A semicircular boss is arranged in the semicircular groove on the upper surface of the semicircular mounting shaft hole, and two semicircular bosses are closed to form a lifting boss;

[0012] The locating ring is installed in a circular groove formed by closing two semicircular grooves, and after the locating ring is installed, the outer wall of the locating ring fits with the inner wall of the circular groove, and the inner wall of the locating ring fits with the outer surface of the bearing to be removed.

[0013] Beneficial effects:

[0014] 1. The clamping block is semicircular, and two semicircular clamping blocks can be closed to form a circle. A semicircular groove is opened at the center of the semicircular clamping block, and a semicircular mounting shaft hole is opened in the semicircular groove. The two semicircular mounting shaft holes are closed to form a complete mounting shaft hole. A semicircular boss is arranged in the semicircular groove on the upper surface of the semicircular mounting shaft hole, and the two semicircular bosses are closed to form a lifting boss.

[0015] This design allows the two semicircular clamping blocks to be combined into a circle, which is convenient for placing the clamping block under the bearing to be removed and allowing the mounting shaft hole to clamp the motor shaft. The semicircular groove is provided with a semicircular boss, which is higher than the semicircular groove. When the puller pulls the outer edge of the clamping block, the lifting boss of the clamping block first presses against the inner ring of the bearing, and then the bottom surface of the semicircular groove presses against the outer ring of the bearing, so that the puller can remove the bearing from the motor shaft more quickly and avoid damaging the bearing by directly using the puller to clamp the outer ring of the bearing.

[0016] 2. The locating ring is installed in the circular groove formed by closing two semicircular grooves. After the locating ring is installed, the outer wall of the locating ring fits with the inner wall of the circular groove, and the inner wall of the locating ring fits with the outer surface of the bearing to be removed.

[0017] This design allows the locating ring to be placed in the circular groove when disassembling a bearing with a smaller radius, so that the locating ring can fill the space between the inner wall of the circular groove and the outer surface of the bearing and fix the bearing. When using a puller to disassemble the bearing, the bearing will gradually fall off the motor shaft. During the process, since the puller is directly installed on the end of the motor shaft to disassemble the bearing, the puller will have a certain amount of swing. The locating ring can press the outer surface of the bearing against the clamping block to prevent the collision between the connecting block and the mounting shaft at the end of the motor shaft caused by the swing of the puller, which will scratch and damage the mounting shaft, thereby protecting the mounting shaft. In addition, when facing bearings of different radii, locating rings of different radii can be replaced to achieve the positioning function and improve the versatility of the entire disassembly tooling.

[0018] When disassembling a bearing with a larger radius, remove the locating ring and use the connecting block to quickly reinstall the connecting block on the other end of the motor shaft so that the outer wall of the bearing directly fits the inner wall of the circular groove. There is no need to readjust the clamping radius of the clamping block. After installing the clamping block, during the process of using the puller to disassemble the bearing, the outer wall of the bearing will press the clamping block tightly, thereby avoiding scratches between the inner wall of the mounting shaft hole of the clamping block and the mounting shaft.

[0019] Furthermore, a plurality of threaded holes are provided at both ends of the clamping block.

[0020] Beneficial effect: The threaded holes at both ends of the clamping block can be used to cooperate with the connecting block to fix and combine the two clamping blocks.

[0021] Furthermore, a plurality of mounting holes are provided on the connection block, countersunk holes are formed on the mounting holes, and the positions of the mounting holes of the connection block correspond to the positions of the threaded holes on the clamping block.

[0022] Beneficial effect: The mounting hole on the connection block can be aligned with the threaded hole on the clamping block, so that the screw can pass through to fix the connection block and the clamping block. The countersunk hole on the mounting hole can accommodate the screw head, so that the screw head is hidden in the connection block to prevent the exposed screw head from affecting the puller's grasping of the clamping block, thereby affecting the removal of the bearing.

[0023] Furthermore, a matching groove is opened in the middle of one end of the clamping block, and a matching protrusion is arranged in the middle of the other end of the clamping block. Matching threaded holes are arranged on the matching groove and the matching protrusion. The two clamping blocks can be docked and fixed by using the matching groove and the matching concave block to combine the two clamping blocks into a whole.

[0024] Beneficial effect: The two clamping blocks can be quickly combined by using the matching protrusions and matching grooves. When the clamping block is to be loosened to clamp other bearings, it is only necessary to remove the bolt in the matching threaded hole at one end, which makes it more convenient to disassemble and install the clamping block. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a front view of a first embodiment of a bearing disassembly tool for a high-speed and high-precision spindle motor according to the utility model.

[0026] Figure 2 It is a perspective exploded schematic diagram of a first embodiment of a bearing removal tool for a high-speed and high-precision spindle motor according to the utility model.

[0027] Figure 3 The utility model is a schematic diagram of disassembling a small bearing according to a first embodiment of a bearing disassembly tool for a high-speed and high-precision spindle motor.

[0028] Figure 4 The utility model is a schematic diagram of disassembling a large bearing according to a first embodiment of a bearing disassembly tool for a high-speed and high-precision spindle motor.

[0029] Figure 5 It is a stereoscopic diagram of a second embodiment of a bearing disassembly tool for a high-speed and high-precision spindle motor according to the utility model. DETAILED DESCRIPTION

[0030] The following is further described in detail through specific implementation methods:

[0031] The markings in the drawings of the specification include: clamping block 1, semicircular groove 11, mounting shaft hole 12, lifting boss 13, threaded hole 14, matching groove 15, matching protrusion 16, matching threaded hole 17, connecting block 2, mounting hole 21, countersunk hole 22, positioning ring 3, motor shaft 4, small bearing 5, large bearing 6.

[0032] Embodiment 1

[0033] like Figure 1 , Figure 2 As shown, a bearing disassembly tool for a high-speed and high-precision spindle motor is used to disassemble the bearing on the motor shaft 4, including a clamping block 1, a connecting block 2 and a positioning ring 3. The connecting block 2 connects the two clamping blocks 1, and the positioning ring 3 is installed on the clamping block 1.

[0034] The clamping block 1 is semicircular, and two semicircular clamping blocks 1 can be closed to form a circle, a semicircular groove 11 is opened at the center of the semicircular clamping block 1, a semicircular mounting shaft hole 12 is opened in the semicircular groove 11, and the two semicircular mounting shaft holes 12 are closed to form a complete mounting shaft hole 12, a semicircular boss is arranged in the semicircular groove 11 on the upper surface of the semicircular mounting shaft hole 12, and the two semicircular bosses are closed to form a lifting boss 13, and a plurality of threaded holes 14 are arranged at both ends of the clamping block 1. In this embodiment, the radius of the mounting shaft hole 12 is larger than the radius of the mounting shaft at the end of the motor shaft 4, which can prevent the inner wall of the mounting shaft hole 12 from scratching the mounting shaft at the end of the motor shaft 4 during the disassembly of the bearing.

[0035] The positioning ring 3 is installed in the circular groove formed by closing the two semicircular grooves 11, and after the positioning ring 3 is installed, the outer wall of the positioning ring 3 fits with the inner wall of the circular groove, and the inner wall of the positioning ring 3 fits with the outer surface of the bearing to be removed. The positioning ring 3 can be set in advance according to the gap between the smaller bearing 5 and the inner wall of the circular groove, so that the disassembly tool is suitable for disassembling bearings of different radius sizes.

[0036] The connection block 2 is provided with a plurality of mounting holes 21, and the mounting holes 21 are provided with countersunk holes 22. The positions of the mounting holes 21 of the connection block 2 correspond to the positions of the threaded holes 14 on the clamping block 1. In this embodiment, the connection block 2 is a rectangular block, and four mounting holes 21 are evenly provided on each rectangular block. The mounting holes 21 are provided with internal threads, and screws are provided in the mounting holes 21 to fix and connect the two clamping blocks 1.

[0037] Here’s how to use it:

[0038] like Figure 3As shown, when disassembling the small bearing 5 with a smaller radius, the clamping block 1 is locked and fixed by using the connecting block 2, and the bottom surface of the circular groove formed by closing the two semicircular grooves 11 is pressed against the lower surface of the small bearing 5. During the process, since the lifting boss 13 is higher than the bottom surface of the circular groove, it will first press against the inner ring of the small bearing 5, and then the positioning ring 3 is placed in the circular groove, so that the positioning ring 3 presses against the inner wall of the circular groove and the outer surface of the small bearing 5. After the positioning ring 3 is installed, a puller is installed at the end of the motor shaft 4, and the puller pulls the edge of the clamping block 1 to remove the bearing from the mounting shaft at the end of the motor shaft 4.

[0039] like Figure 4 As shown, when disassembling the large bearing 6 with a larger radius, since the outer surface of the large bearing 6 is directly equal to the radius of the circular groove formed by the two semicircular grooves 11, the clamping block 1 is directly removed and reinstalled under the large bearing 6, so that the outer surface of the large bearing 6 is tightly against the inner wall of the circular groove, and then the bearing is removed using a puller.

[0040] Embodiment 2

[0041] like Figure 5 As shown, the difference between this embodiment and embodiment 1 is that: 1) a matching groove 15 is opened in the middle of one end of the clamping block 1, and a matching protrusion 16 is arranged in the middle of the other end of the clamping block 1, and matching threaded holes 17 are arranged on the matching groove 15 and the matching protrusion 16. The two clamping blocks 1 can be docked and fixed by using the matching groove 15 and the matching concave block, so that the two clamping blocks 1 are combined into a whole.

[0042] The two clamping blocks 1 can be quickly combined by using the matching protrusions 16 and the matching grooves 15. When the clamping block 1 is to be loosened to clamp other bearings, it is only necessary to remove the bolts in the matching threaded holes 17 at one end, and loosen the bolts in the matching threaded holes 17 at the other ends of the two clamping blocks 1, so that the two clamping blocks 1 can be opened, thereby facilitating the installation of the clamping block 1 on the motor shaft 4 to remove the bearing, and the removal and installation of the clamping block 1 is more efficient.

[0043] The above is only an embodiment of the utility model. The utility model is not limited to the field involved in this implementation case. The common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A high-speed and high-precision spindle motor bearing removal tool, used to remove the bearing on the motor shaft, characterized in that: It includes a clamping block, a connecting block and a positioning ring, wherein the connecting block connects two clamping blocks, and the positioning ring is installed on the clamping block; The clamping block is semicircular, and two semicircular clamping blocks can be closed to form a circle, a semicircular groove is opened at the center of the semicircular clamping block, a semicircular mounting shaft hole is opened in the semicircular groove, the two semicircular mounting shaft holes are closed to form a complete mounting shaft hole, a semicircular boss is arranged in the semicircular groove on the upper surface of the semicircular mounting shaft hole, and the two semicircular bosses are closed to form a lifting boss; The positioning ring is installed in a circular groove formed by closing two semicircular grooves, and after the positioning ring is installed, the outer wall of the positioning ring fits with the inner wall of the circular groove, and the inner wall of the positioning ring fits with the outer surface of the bearing to be removed.

2. The bearing disassembly tool for a high-speed and high-precision spindle motor according to claim 1, characterized in that: A plurality of threaded holes are arranged at both ends of the clamping block.

3. The bearing disassembly tool for a high-speed and high-precision spindle motor according to claim 2, characterized in that: The connection block is provided with a plurality of mounting holes, the mounting holes are provided with countersunk holes, and the positions of the mounting holes of the connection block correspond to the positions of the threaded holes on the clamping block.

4. The bearing disassembly tool for a high-speed and high-precision spindle motor according to claim 1, characterized in that: A matching groove is provided in the middle of one end of the clamping block, and a matching protrusion is provided in the middle of the other end of the clamping block. Matching threaded holes are provided on the matching groove and the matching protrusion. The two clamping blocks can be docked and fixed by using the matching groove and the matching concave block to combine the two clamping blocks into a whole.

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