Manual reamer for machining inner hole of flywheel bushing

Abstract

The utility model relates to the technical field of flywheel bush inner hole machining, in particular to a flywheel bush inner hole machining manual reamer which comprises a reamer body, a first sliding groove is formed in the reamer body, a plurality of T-shaped second sliding grooves are formed in the inner wall of the first sliding groove, and blade assemblies are arranged in the second sliding grooves in a sliding mode. A pressing block is slidably arranged in the first sliding groove, a threaded column is arranged on the pressing block in a threaded mode, a rotating disc is fixedly arranged at one end of the threaded column, anti-skid lines are arranged on the rotating disc, a rotating column is fixedly arranged on the side, away from the rotating disc, of the cutter body, and a rotating handle is arranged on the rotating column. Therefore, the machining flexibility and the application range are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of inner hole machining of flywheel bushings, and more specifically, to a manual reamer for inner hole machining of flywheel bushings. Background Technique

[0002] A reamer is a rotary tool for hole machining, mainly used to improve the machining accuracy of holes and reduce the surface roughness. It is a multi-edge tool for semi-finishing or finishing prefabricated holes and is widely used in production. Because of its convenient operation, high productivity, and ability to obtain high-quality holes, reamers can be divided into two categories: hand-held and machine-used, and are selected according to production conditions and processing requirements. Manual reamers are often used in the process of inner hole machining of flywheel bushings.

[0003] As disclosed in a Chinese patent: A manual reamer, application number: CN201220461659.3, includes a ratchet wrench, a tool body, and a transmission plate. The key points are: positioning columns are provided at both ends of the transmission plate, a spiral hole is provided in the middle, a spiral feed rod is threadedly connected in the spiral hole, a positioning pin hole is provided at the lower end of the spiral feed rod, and a hexagon head is provided at the upper end; a tool holder with a reamer is provided at the lower end of the tool body, a positioning pin slot is provided at the upper end, and the tool holder is fixed to the lower end of the tool body by screws; the hexagon head of the spiral feed rod is inserted into the inner hexagon head of the ratchet wrench for socket connection. The structure is simple, easy to manufacture with low cost, and convenient for assembly and use; by manually reaming holes with a ratchet wrench, the feed rate is easy to control, the tool body has a self-centering function, and the concentricity of manual reaming is high; when performing manual reaming operations in a narrow space, only a long spiral feed rod needs to be replaced to complete the reaming operation in a narrow space.

[0004] However, in the above technical solution, as an important part of mechanical components, the aperture size of the inner hole of the flywheel bushing varies according to the usage range and application scenarios. However, most of the blades on the existing manual reamers in the market are fixed, which means that they can only machine holes with fixed sizes. In practical applications, if holes with different sizes need to be machined, different specifications of manual reamers need to be replaced, which limits the flexibility and application range of manual reamers. Content of the Utility Model

[0005] The main purpose of the present utility model is to provide a manual reamer for inner hole machining of flywheel bushings, which can effectively solve the problem in the background technique that as an important part of mechanical components, the aperture size of the inner hole of the flywheel bushing varies according to the usage range and application scenarios. However, most of the blades on the existing manual reamers in the market are fixed, which means that they can only machine holes with fixed sizes. In practical applications, if holes with different sizes need to be machined, different specifications of manual reamers need to be replaced, which limits the flexibility and application range of manual reamers.

[0006] To achieve the above object, the technical solution adopted by the present utility model is as follows:

[0007] A manual reamer for machining the inner hole of a flywheel bushing, comprising a tool body, a first chute is arranged on the tool body, a plurality of T-shaped second chutes are arranged on the inner wall of the first chute, a blade assembly is slidably arranged in the second chute, a pressing block is slidably arranged in the first chute, a threaded column is arranged on the pressing block in a threaded manner, a turntable is fixedly arranged at one end of the threaded column, anti-slip lines are arranged on the turntable, a rotating column is fixedly arranged on the side of the tool body away from the turntable, and a rotating handle is arranged on the rotating column.

[0008] Preferably, the second chute penetrates through the tool body, the pressing block is frustum-shaped, and the threaded column is rotatably connected to the tool body.

[0009] Preferably, the blade assembly includes an assembly base, and an inclined surface is arranged on one side of the assembly base close to the pressing block.

[0010] Preferably, two push plates are movably arranged on the side of the assembly base away from the inclined surface, and a spring is fixedly arranged on the side of the push plate away from the assembly base.

[0011] Preferably, a blade is arranged between the two push plates.

[0012] Preferably, the spring is fixedly connected to the tool body, and the blade is fixedly connected to the assembly base.

[0013] Compared with the prior art, the present utility model has the following beneficial effects:

[0014] (1) When the present utility model is used, first rotate the turntable, the turntable drives the threaded column to rotate, the pressing block moves to one side through the threaded column, then the pressing block presses the inclined surface, so that the assembly base moves in a direction away from the threaded column, the assembly base drives the blade to move, and at the same time the assembly base presses the push plate, and the spring deforms, so as to adjust the position of the blade according to the size of the aperture to be machined. After the adjustment is completed, move the tool body to the specified position, and then rotate the rotating handle. The rotating handle drives the tool body 1 to rotate through the rotating column, and the blade assembly rotates following the tool body, so as to machine the inner hole of the flywheel bushing, which can adapt to different aperture sizes, thereby improving the flexibility and application range of the machining. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of a manual reamer for machining the inner hole of a flywheel bushing of the present utility model;

[0016] Figure 2 It is a schematic internal structural diagram of a manual reamer for machining the inner hole of a flywheel bushing of the present utility model;

[0017] Figure 3This is a schematic structural diagram of a blade assembly in a manual reamer for machining the inner hole of a flywheel bushing of the present utility model.

[0018] In the figure: 1. Cutter body; 2. First chute; 3. Second chute; 4. Blade assembly; 401. Assembly base; 402. Inclined surface; 403. Push plate; 404. Spring; 405. Blade; 5. Pressure block; 6. Threaded column; 7. Turntable; 8. Anti-slip pattern; 9. Rotating column; 10. Rotating handle. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] As Figure 1 and Figure 2 shown, a manual reamer for machining the inner hole of a flywheel bushing includes a cutter body 1. A first chute 2 is provided on the cutter body 1. A plurality of T-shaped second chutes 3 are provided on the inner wall of the first chute 2. A blade assembly 4 is slidably provided in the second chute 3. A pressure block 5 is slidably provided in the first chute 2. A threaded column 6 is threadedly provided on the pressure block 5. One end of the threaded column 6 is fixedly provided with a turntable 7. An anti-slip pattern 8 is provided on the turntable 7. A rotating column 9 is fixedly provided on the side of the cutter body 1 away from the turntable 7. A rotating handle 10 is provided on the rotating column 9.

[0021] As Figure 3 shown, in another embodiment of the present utility model, the blade assembly 4 includes an assembly base 401. An inclined surface 402 is provided on the side of the assembly base 401 close to the pressure block 5;

[0022] Two push plates 403 are movably provided on the side of the assembly base 401 away from the inclined surface 402. A spring 404 is fixedly provided on the side of the push plate 403 away from the assembly base 401;

[0023] A blade 405 is provided between the two push plates 403. When the position of the blade 405 needs to be adjusted, first, the inclined surface 402 is squeezed by the pressure block 5, so that the assembly base 401 moves in a direction away from the threaded column 6. The assembly base 401 drives the blade 405 to move. At the same time, the assembly base 401 squeezes the push plate 403, and the spring 404 deforms, thereby adjusting the position of the blade 405.

[0024] The working principle of the manual reamer for machining the inner hole of a flywheel bushing:

[0025] During use, first rotate the turntable 7. The turntable 7 drives the threaded column 6 to rotate. Through the threaded column 6, the pressing block 5 moves to one side. Then the pressing block 5 presses against the inclined surface 402, causing the component base 401 to move away from the threaded column 6. The component base 401 drives the blade 405 to move. At the same time, the component base 401 presses against the push plate 403, deforming the spring 404. Thus, the position of the blade 405 is adjusted according to the aperture size to be processed. After the adjustment is completed, move the tool body 1 to the designated position. Then rotate the rotating handle 10. The rotating handle 10 drives the tool body 1 to rotate through the rotating column 9. The blade assembly 4 rotates with the tool body 1, thereby machining the inner hole of the flywheel bushing, which can adapt to different aperture sizes, thus improving the flexibility and application range of machining.

[0026] Obviously, the above embodiments of the present utility model are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or variations can be made on the basis of the above description. It is impossible to list all the implementation manners here. Any obvious changes or variations derived from the technical solutions of the present invention still fall within the protection scope of the present invention.

Claims

1. A manual reamer for machining the inner hole of a flywheel bushing, comprising a cutter body (1), characterized in that: A first sliding groove (2) is provided on the tool body (1). A plurality of T-shaped second sliding grooves (3) are provided on the inner wall of the first sliding groove (2). A blade assembly (4) is slidably arranged in the second sliding groove (3). A pressing block (5) is slidably arranged in the first sliding groove (2). A threaded column (6) is arranged on the pressing block (5) in a threaded manner. One end of the threaded column (6) is fixedly provided with a turntable (7). Anti-slip patterns (8) are provided on the turntable (7). A rotating column (9) is fixedly provided on the side of the tool body (1) away from the turntable (7). A rotating handle (10) is arranged on the rotating column (9).

2. The manual reamer for machining the inner hole of a flywheel bushing according to claim 1, wherein: The second sliding groove (3) penetrates the tool body (1). The pressing block (5) is frustum-shaped. The threaded column (6) is rotatably connected to the tool body (1).

3. A manual reamer for machining the inner hole of a flywheel bushing according to claim 2, characterized in that: The blade assembly (4) includes an assembly base (401). An inclined surface (402) is provided on the side of the assembly base (401) close to the pressing block (5).

4. A manual reamer for machining the inner hole of a flywheel bushing according to claim 3, characterized in that: Two push plates (403) are movably arranged on the side of the assembly base (401) away from the inclined surface (402). Springs (404) are fixedly provided on the sides of the push plates (403) away from the assembly base (401).

5. A manual reamer for machining the inner hole of a flywheel bushing according to claim 4, characterized in that: A blade (405) is arranged between the two push plates (403).

6. A manual reamer for machining the inner hole of a flywheel bushing according to claim 5, characterized in that: The springs (404) are fixedly connected to the tool body (1). The blade (405) is fixedly connected to the assembly base (401).

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