Portable bearing trimming tool

Abstract

The utility model relates to a portable bearing trimming tool which comprises a centering screw rod, and a thread part is arranged at the end part of the centering screw rod; the rotary cutter is provided with a cutting edge; the cushion block piece is used for supporting the bearing; the connecting piece is used for being in threaded connection with the threaded part; the centering screw is used for enabling the threaded part to be in threaded connection with the connecting piece after the centering screw penetrates through the rotary cutter, the bearing and the cushion block piece so as to provide pressure to enable the rotary cutter and the cushion block piece to act on the bearing. The utility model provides a portable bearing trimming tool which is not dependent on a drilling machine, can be conveniently brought to a site, is suitable for trimming replacement of a large-size bearing, does not need to carry the large-size bearing to the drilling machine for trimming, reduces the danger of carrying and placing, and is reliable in structure, simple to use, easy to maintain and good in operability.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing maintenance, in particular to a portable bearing trimming tool. Background Art

[0002] In the practical application of the machinery industry, universal joint bearings are widely used. For example, they can be seen on excavators, airplanes, ships, machine tools, etc. In addition to the traditional interference fit, gluing, and locking nut fixation, there is also the more commonly used flanging installation. The bearings of the flanging installation method can pass through the mounting hole more freely. The flanging edges on both sides of the bearing are expanded and flipped to a certain angle so that they are stuck in the mounting hole to achieve the purpose of installation and fixation.

[0003] When you need to replace a flanged universal joint bearing, if you do not process the flanged part and directly press it out with great force, the inner side of the mounting hole will be scratched, and the pressure required for disassembly will be very large, which is inconvenient. If you can cut off part or all of the flanged part in advance, the bearing will be quite easy to disassemble and will not cause much impact on the mounting hole.

[0004] The current mainstream trimming method is to customize a tool similar to a hole saw, install the tool on a drill press, move the workpiece to the drill press and place it on the drill press workbench, and use the rotary cutting on the drill press to destroy the flange of the bearing. This method can complete the disassembly work relatively quickly, but it has certain limitations. It relies on the drill press and is not suitable for larger parts. For large-sized bearings, a part weighs more than ten kilograms, so the actual operation feasibility is low, it is inconvenient to carry, it is inconvenient to place it on the drill table, and it is dangerous for the work and the operator. The cutting force of the drill press is also not ideal. Therefore, it is necessary to design a portable trimming tool that can be separated from the drill press. Utility Model Content

[0005] In order to solve the above problems, the present technical solution provides a portable bearing trimming tool.

[0006] To achieve the above purpose, the technical solution is as follows:

[0007] A portable bearing trimming tool, comprising:

[0008] A centering screw having a threaded portion at the end thereof;

[0009] a rotating cutter having a cutting edge thereon;

[0010] A spacer member, which is used to support the bearing;

[0011] A connecting piece, which is used for threaded connection with the threaded portion;

[0012] The centering screw is used to threadedly connect with the connecting piece after passing through the rotary cutter, the bearing and the spacer piece, so as to provide pressure to make the rotary cutter and the spacer piece act on the bearing.

[0013] A portable bearing trimming tool as described above further includes an elastic pressure mechanism, which is arranged between the rotary cutter and the centering screw, and / or between the spacer piece and the connecting piece, so as to convert the rigid pressure provided by the connecting piece into elastic pressure.

[0014] A portable bearing trimming tool as described above, the elastic pressure mechanism includes an elastic member.

[0015] A portable bearing trimming tool as described above, the elastic pressure mechanism further includes a thrust bearing, one side of the thrust bearing abuts against the elastic member, and the other side abuts against the rotary cutter or the spacer piece.

[0016] A portable bearing trimming tool as described above, the centering screw includes a main rod, and a rod head arranged at one end of the main rod, the threaded portion is arranged at the other end of the main rod, and the elastic member is located between the rod head and the thrust bearing; or between the connecting piece and the thrust bearing.

[0017] A portable bearing trimming tool as described above, the elastic member is a corrugated gasket.

[0018] A portable bearing trimming tool as described above further includes a wrench rod, a connecting hole is arranged on the circumferential side of the rotary cutter or the spacer piece or the connecting piece, and the wrench rod is connected with the connecting hole.

[0019] A portable bearing trimming tool as described above further includes a centering bushing, which is used to be sleeved on the centering screw and for the bearing to be sleeved on.

[0020] A portable bearing trimming tool as described above, the spacer piece includes a main body portion, a pressing platform arranged on the main body portion and used to abut against the bearing, and a transition frustum arranged between the main body portion and the pressing platform.

[0021] A portable bearing trimming tool as described above, the cutting edge is in an annular serrated shape, and its diameter is less than or equal to the outer diameter of the bearing.

[0022] The beneficial effects of this application are:

[0023] The utility model provides a portable bearing trimming tool. A rotary cutter, a bearing and a spacer are installed on a centering screw rod, and finally a connecting piece is installed. By using the pressure generated between the connecting piece and the centering screw rod, the cutting edge presses on the bearing. When the rotary cutter rotates, the cutting edge cuts the bearing. It gets rid of the dependence on a drilling machine, can be conveniently carried to the site, and is suitable for trimming and replacing large-sized bearings. It is not necessary to carry large workpieces to the drilling machine for trimming, reducing the risks of handling and placing. The structure is reliable, the use is simple, it is easy to maintain, and the operability is good. Brief Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for description in the embodiments.

[0025] Figure 1 is the structural exploded view of the present utility model;

[0026] Figure 2 is the half-sectional view of the present utility model. Detailed Embodiment

[0027] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model clearer, the following further details the present utility model in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0028] A portable bearing trimming tool includes

[0029] a centering screw rod 1, with a threaded portion 4 provided at its end; by screwing the connecting piece through the thread, the pressure required for cutting is generated.

[0030] a rotary cutter 12, with a cutting edge 121 provided thereon; the centering screw rod cooperates with the rotary cutter, so that the rotary cutter can always remain coaxial with the bearing, avoiding the position of the cutter from running during the cutting process and thus damaging the workpiece.

[0031] a spacer 7, which is used to support the bearing; specifically, the bearing 5 is located in the workpiece 6, and the workpiece is provided with an installation cavity 61 for placing the bearing 5;

[0032] a connecting piece 10, which is used for threaded connection with the threaded portion 4;

[0033] The centering screw rod 1 is used to pass through the rotary cutter 12, the bearing and the spacer 7, and then the threaded portion 4 is threadedly connected with the connecting piece 10 to provide pressure so that the rotary cutter 12 and the spacer 7 act on the bearing.

[0034] The utility model provides a portable bearing trimming tool. A rotary cutter, a bearing and a cushion block are installed on a centering screw rod, and finally a connecting piece is installed. By using the pressure generated between the connecting piece and the centering screw rod, the cutting edge presses on the bearing. When the rotary cutter rotates, the cutting edge cuts the bearing. It gets rid of the dependence on a drilling machine, can be conveniently taken to the site, and is suitable for trimming and replacing large-sized bearings. It is not necessary to carry large workpieces to the drilling machine for trimming, reducing the risks of handling and placement. The structure is reliable, the use is simple, it is easy to maintain, and the operability is good.

[0035] Further, as a preferred implementation manner of this solution rather than a limitation, it further includes an elastic pressure mechanism 13, which is arranged between the rotary cutter 12 and the centering screw rod 1, and / or between the cushion block 7 and the connecting piece 10, so as to convert the rigid pressure provided by the connecting piece 10 into elastic pressure. The elastic pressure mechanism can be used to continuously provide pressure.

[0036] Further, as a preferred implementation manner of this solution rather than a limitation, the elastic pressure mechanism 13 includes an elastic member 2. The elastic member can be a spring or the like.

[0037] Further, as a preferred implementation manner of this solution rather than a limitation, the elastic pressure mechanism 13 further includes a thrust bearing 3. One side of the thrust bearing 3 abuts against the elastic member 2, and the other side abuts against the rotary cutter 12 or the cushion block 7. The thrust bearing is used to reduce the friction between the rotary cutter or the cushion block and the elastic member.

[0038] Further, as a preferred implementation manner of this solution rather than a limitation, the centering screw rod 1 includes a main rod 101 and a rod head 102 arranged at one end of the main rod 101. The threaded portion 4 is arranged at the other end of the main rod 101. The elastic member 2 is located between the rod head 102 and the thrust bearing 3; or between the connecting piece 10 and the thrust bearing 3. In this embodiment, there are two groups, one group is the thrust bearing 3 and the elastic member 2, and the other group is the thrust bearing 8 and the elastic member 9.

[0039] Further, as a preferred implementation manner of this solution rather than a limitation, the elastic member 2 is a corrugated gasket.

[0040] Further, as a preferred implementation manner of this solution rather than a limitation, it further includes a wrench rod 11. A connection hole 103 is arranged on the periphery of the rotary cutter 12 or the cushion block 7 or the connecting piece 10, and the wrench rod 11 is connected to the connection hole 103. The wrench rod can be a rod-shaped object, such as a screwdriver, a screw rod, etc. Threads can be arranged at the connection hole to be threadedly matched with the wrench rod for connection. The wrench rod is used to apply force for rotation.

[0041] Further, as a preferred implementation manner rather than a limitation of the present solution, it further includes a centering bushing, which is used to be sleeved on the centering screw 1 and is provided with a bearing. The centering bushing is cylindrical and is used for large-sized bearings to fill the diameter difference between the large-sized bearings and the centering screw.

[0042] Further, as a preferred implementation manner rather than a limitation of the present solution, the pad member 7 includes a main body portion 701, a pressing platform 702 provided on the main body portion 701 and used to abut against the bearing, and a transition frustum 703 provided between the main body portion 701 and the pressing platform 702. The pad member is used to support the bearing and facilitate trimming of the bearing.

[0043] Further, as a preferred implementation manner rather than a limitation of the present solution, the cutting edge 121 is in a ring-shaped serrated shape and its diameter is less than or equal to the outer diameter of the bearing. The cutting tool has a ring-shaped toothed cutting edge, and this cutting edge is customized according to the size of the bearing to be cut and cannot be larger than the outer diameter of the bearing, otherwise the workpiece will be damaged. At the same time, there are also holes on the cutting tool for rotating the tool.

[0044] The above are only the preferred embodiments of the present application and are not used to limit the scope of implementation of the present application. Other principles and basic structures that are the same as or similar to those of the present application are within the protection scope of the present application.

Claims

1. A portable bearing trimming tool, characterized in that: include A centering screw (1) having a threaded portion (4) at its end; A rotating tool (12) having a cutting edge (121); A spacer (7) for supporting the bearing; A connecting piece (10) used for threaded connection with the threaded portion (4); The centering screw (1) is used to thread the threaded portion (4) and the connecting member (10) together after passing through the rotating tool (12), the bearing and the spacer (7) to provide pressure so that the rotating tool (12) and the spacer (7) act on the bearing.

2. A portable bearing trimming tool according to claim 1, characterized in that: It also includes an elastic pressure mechanism (13), which is arranged between the rotating tool (12) and the centering screw (1), and / or between the cushion block (7) and the connecting member (10) to convert the rigid pressure provided by the connecting member (10) into elastic pressure.

3. A portable bearing trimming tool according to claim 2, characterized in that: The elastic pressure mechanism (13) comprises an elastic member (2).

4. A portable bearing trimming tool according to claim 3, characterized in that: The elastic pressure mechanism (13) further comprises a thrust bearing (3), one side of the thrust bearing (3) being in contact with the elastic member (2), and the other side of the thrust bearing (3) being in contact with the rotating tool (12) or the cushion member (7).

5. A portable bearing trimming tool according to claim 4, characterized in that: The centering screw (1) comprises a main rod (101) and a rod head (102) arranged on one end of the main rod (101), the threaded portion (4) is arranged on the other end of the main rod (101), and the elastic member (2) is located between the rod head (102) and the thrust bearing (3); or between the connecting member (10) and the thrust bearing (3).

6. A portable bearing trimming tool according to claim 3, characterized in that: The elastic member (2) is a corrugated gasket.

7. The portable bearing trimming tool according to claim 1, characterized in that: It also comprises a twisting rod (11), a connecting hole (103) is provided on the peripheral side of the rotating tool (12) or the cushion block (7) or the connecting member (10), and the twisting rod (11) is connected to the connecting hole (103).

8. The portable bearing trimming tool according to claim 1, characterized in that: It also includes a centering sleeve, which is used to be sleeved on the centering screw (1) and provided for the bearing sleeve.

9. The portable bearing trimming tool according to claim 1, characterized in that: The cushion block (7) comprises a main body (701), a pressing platform (702) arranged on the main body (701) and used to abut against the bearing, and a transition truncated platform (703) arranged between the main body (701) and the pressing platform (702).

10. The portable bearing trimming tool according to claim 1, characterized in that: The cutting edge (121) is in the shape of an annular sawtooth, and its diameter is less than or equal to the outer diameter of the bearing.

Images