Tool for disassembling outer conical surface gear shaft

Abstract

The utility model provides a tool for disassembling an outer conical surface gear shaft, and belongs to the technical field of gear disassembling tools. Comprising a clamping sleeve, an inner conical hole matched with an outer conical surface on an outer conical surface gear in the outer conical surface gear shaft is formed in the center of the clamping sleeve, and the inner conical hole and the outer conical surface are matched in a matched mode to support the whole outer conical surface gear shaft. When in use, the outer conical surface gear and the shaft are integrally placed in the inner conical hole of the jacket, the inner conical hole and the outer conical surface are matched and matched to support the whole outer conical surface gear shaft, the gear and the shaft can be easily detached and separated by lightly knocking the end face of the shaft, the structure is simple, and the use is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of gear disassembly tools, and in particular relates to a tool for disassembling an outer bevel gear shaft, which is mainly used for disassembling an outer bevel gear shaft of a dental contra-angle handpiece. Background Art

[0002] Gear and shaft assemblies are mechanical components that support rotating parts and rotate with them to transmit motion, torque, or bending moment. They are typically round metal rods, with varying diameters. Parts that rotate within a machine are mounted on the shaft. One type of gear and shaft configuration features a conical outer surface for the gear and an interference fit between the shaft and gear. Maintenance requires the gear and shaft to be disassembled and separated. Currently available gear removal tools are complex, inconvenient to carry, and expensive. Therefore, improvements are necessary. Utility Model Content

[0003] The technical problem solved by the utility model is to provide a tool for disassembling the outer bevel gear shaft. The utility model aims to produce a disassembly tool for disassembling the outer bevel gear and the shaft, so that the gear and the shaft can be easily disassembled and disengaged. The tool has a simple structure, is easy to use and easy to carry.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by this utility model is:

[0005] A tool for disassembling an external bevel gear shaft comprises a sleeve, wherein the center of the sleeve is provided with an inner conical hole for matching with the outer conical surface on the external bevel gear in the external bevel gear shaft, and the inner conical hole and the outer conical surface are matched to support the external bevel gear shaft as a whole.

[0006] To further define the above scheme, the jacket is a two-half jacket structure formed by two half jackets connected together by a fixed assembly, and semi-conical holes are provided in the middle of the two opposite sides of the two half jackets, and the two semi-conical holes are relatively combined to form an inner conical hole.

[0007] As a further limitation of the above solution, the two half jackets are fixed together by a fixing sleeve which is sleeved on the outside of the two half jackets.

[0008] As a further limitation of the above solution, a limiting boss for limiting the axial movement of the fixed sleeve is provided on the outer side surfaces of the lower parts of the two half jackets.

[0009] To further define the above solution, the jacket is a cylindrical structure, the bottom of the jacket of the cylindrical structure faces upward, the inner conical hole is arranged at the center of the bottom plate of the jacket, and the large diameter end of the inner conical hole faces upward.

[0010] As a further limitation of the above solution, a protective pad is provided on the surface of the inner conical hole.

[0011] The advantages of this utility model compared with the prior art are:

[0012] 1. This solution makes a disassembly tool for the external bevel gear and shaft. The external bevel gear and shaft are placed as a whole into the inner conical hole of the jacket. The inner conical hole and the outer conical surface are matched to support the external bevel gear shaft as a whole. By gently tapping the end face of the shaft, the gear and shaft can be easily disassembled. The structure is simple and easy to use.

[0013] 2. In this solution, the mating surface between the jacket and the gear is an inner conical hole, which is composed of two completely identical semi-conical holes on the half jacket. The two half jackets are clamped by a fixed sleeve, which not only makes it easy to disengage the gear from the interference fit shaft, but also makes it easier to fit and separate the gear cone surface and the jacket cone hole. The tool is simple, convenient, easy to carry and low in cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the structural front view of the utility model;

[0015] Figure 2 It is a top view of the structure of the utility model. DETAILED DESCRIPTION

[0016] The following will be combined with the accompanying 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.

[0017] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.

[0018] See also Figure 1-2 , describe in detail the embodiments of the present utility model.

[0019] Example 1: A tool for disassembling an external bevel gear shaft, see Figure 1As shown, it includes a sleeve 1, and the center of the sleeve 1 is provided with an inner conical hole 1-1 for adapting to the outer conical surface 3-1 on the outer conical gear 3 in the outer conical gear shaft. The inner conical hole 1-1 and the outer conical surface 3-1 are adapted to support the outer conical gear shaft as a whole.

[0020] This embodiment manufactures a disassembly tool for disassembling the outer bevel gear 3 and the shaft 4. The outer bevel gear 3 and the shaft 4 are placed as a whole into the inner conical hole 1-1 of the sleeve 1. The inner conical hole 1-1 and the outer conical surface 3-1 are adapted to support the outer bevel gear 3 and the shaft 4 as a whole. By gently tapping the end face of the shaft 4, the outer bevel gear 3 and the shaft can be easily disassembled and disengaged. The structure is simple and easy to use.

[0021] Example 2: The jacket 1 is a two-half jacket structure formed by connecting two half jackets 1-2 together through a fixed component, see Figure 2 As shown, semi-conical holes 1-2-1 are provided in the middle of two opposite surfaces of the two half jackets 1-2, and the two semi-conical holes 1-2-1 are relatively combined to form an inner conical hole 1-1.

[0022] In this embodiment, the mating surface between the sleeve 1 and the outer conical gear 3 is an inner conical hole, and the inner conical hole is composed of two completely identical semi-conical holes 1-2-1 on the separated half sleeves 1-2. Fixing the two half sleeves can not only easily disengage the gear from the interference fit shaft, but also facilitate the mating and separation of the gear cone surface and the sleeve cone hole. The tool is simple, convenient, easy to carry and low cost.

[0023] In a specific embodiment, the two half jackets 1-2 are fixed together by a fixed sleeve 4 sleeved on the outside. The lower outer surface of the two half jackets 1-2 is provided with a limiting boss 1-2-2 for limiting the axial movement of the fixed sleeve 4, see Figure 1 shown.

[0024] In the above embodiment, the half jackets are fixed by using the fixing sleeve, which can be directly put on the outside of the two half jackets for fixing, or the fixing sleeve can be removed from the two half jackets to separate the two half jackets. It is easy to use and the operation is quick and simple.

[0025] In one specific embodiment, the jacket 1 is cylindrical in shape, with the bottom of the jacket 1 facing upward, and the inner conical hole 1-1 is located at the center of the bottom plate of the jacket 1, with the large diameter end of the inner conical hole 1-1 facing upward. Alternatively, the jacket may be square in shape, and the corresponding fixing sleeve may also be square in shape.

[0026] In a specific embodiment, a protective pad is provided on the surface of the inner conical hole 1-1, and the protective pad contacts the outer surface of the gear to protect the surface and prevent it from being damaged.

[0027] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0028] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A tool for disassembling an external bevel gear shaft, characterized in that: The invention comprises a sleeve (1), wherein the center of the sleeve (1) is provided with an inner conical hole (1-1) adapted to match an outer conical surface (3-1) on an outer conical gear (3) in an outer conical gear shaft, and the inner conical hole (1-1) and the outer conical surface (3-1) are adapted to match and support the outer conical gear shaft as a whole.

2. The tool for disassembling an external bevel gear shaft according to claim 1, characterized in that: The jacket (1) is a two-half jacket structure formed by two half jackets (1-2) connected together by a fixed assembly, and semi-conical holes (1-2-1) are provided in the middle of two opposite surfaces of the two half jackets (1-2), and the two semi-conical holes (1-2-1) are relatively combined to form an inner conical hole (1-1).

3. The tool for disassembling an external bevel gear shaft according to claim 2, wherein: The two half jackets (1-2) are fixed together by a fixing sleeve (2) sleeved on the outside of the two half jackets.

4. The tool for disassembling an external bevel gear shaft according to claim 3, characterized in that: A limiting boss (1-2-2) for limiting the axial movement of the fixed sleeve (2) is provided on the outer side surfaces of the lower parts of the two half jackets (1-2).

5. The tool for disassembling an external bevel gear shaft according to claim 1, characterized in that: The jacket (1) is a cylindrical structure, the bottom of the jacket (1) of the cylindrical structure faces upward, the inner conical hole (1-1) is arranged at the center of the bottom plate of the jacket (1), and the large diameter end of the inner conical hole (1-1) faces upward.

6. The tool for disassembling an external bevel gear shaft according to claim 1, characterized in that: A protective pad is provided on the surface of the inner conical hole (1-1).

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