CN105710743A - Tool for polishing inner walls of holes - Google Patents

Abstract

The invention provides a tool for polishing inner walls of holes. The tool comprises a hollow polishing body composed of an air bag main body and a plurality of polishing air bags arranged on the air bag main body sequentially, the air bag main body and all the polishing air bags are respectively of a columnar structure, the diameters of the polishing air bags gradually increase from top to bottom to be in a stepped form, and high pressure resistant polishing pieces are arranged on the outer surfaces of the polishing air bags. The tool is simple in structure, easy to manufacture, convenient to operate and high in rigidity and strength, is held by hand for processing, has a good polishing effect, guarantees high processing quality, has long service life, and is convenient and practical, thus being worthy of wide popularization.

Description

A grinding tool for the inner wall of a hole

technical field

The invention relates to a grinding tool, in particular to a grinding tool used for the inner wall of a hole.

Background technique

During the grinding process of castings and toy models, there are cases where the inner wall of the hole needs to be ground. Pneumatic grinders and wire cutting are often used in existing operations. The pneumatic grinder works in the way that the pneumatic engine drives the grinding wheel to rotate, and uses the grinding surface of the grinding wheel for grinding, while the wire cutting mainly cuts out the required shape and size through continuous pulse discharge. These two grinding processing methods They are not easy to operate, and cannot grind to the protrusions and burrs on the inner wall of the hole, and the grinding shape and polishing effect are not good, especially for deeper holes with smaller diameters, which cannot meet the grinding processing requirements.

Contents of the invention

Aiming at the deficiencies in the prior art, the invention provides a grinding tool for the inner wall of a hole. The grinding tool has a simple structure, is suitable for grinding tiny holes, is convenient to operate and has a good grinding effect.

In order to achieve the above object, the technical scheme that the present invention takes:

A grinding tool for the inner wall of a hole, comprising a hollow grinding body, the grinding body includes an airbag main body, a plurality of grinding airbags sequentially arranged above the airbag main body, the airbag main body and all the grinding airbags are in a cylindrical structure, The diameters of the polishing airbags increase from top to bottom and are arranged in steps, and the outer surfaces of all the polishing airbags are provided with high-pressure-resistant polishing sheets.

As a preferred technical solution, in order to increase the rigidity of the grinding body, prevent the grinding body from being deformed under pressure, and improve the grinding effect of the grinding airbag, a support body with high rigidity is provided inside the grinding body.

As a preferred technical solution, in order to improve the strength of the airbag main body, effectively prevent rupture or deformation when the airbag is squeezed, and effectively prolong the service life of the airbag main body, both ends of the airbag main body are provided with circular reinforcing plates.

Compared with the prior art, the present invention has the beneficial effects:

1. By setting the main body of the airbag and the stepped grinding airbag, it overcomes the defect that traditional tools cannot grind the small holes. The structure is simple, easy to realize, hand-held processing, easy to operate, and the grinding and polishing effect is good, the processing quality is high, and the practicability is good. .

2. There is a high-rigidity support body in the grinding body, which effectively improves the rigidity of the grinding body, prevents the compression deformation of the grinding body, and further improves the grinding effect.

3. Both ends of the main body of the airbag are equipped with reinforcement plates, which greatly increase the strength of the main body of the airbag, effectively prevent the phenomenon of rupture or deformation when the main body of the airbag is squeezed, and prolong the service life of the main body of the airbag.

Description of drawings

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a schematic sectional view of the grinding body;

Fig. 3 is the structural representation of support body;

Reference numerals: 1. Grinding body, 1-1. Airbag main body, 1-2. Grinding airbag, 2. Grinding sheet, 3. Support body, 4. Reinforcement plate.

detailed description

Propose a kind of specific embodiment of the present invention as shown in Figure 1 and Figure 2, a kind of grinding tool that is used for hole inner wall, comprises hollow grinding body 1, and described grinding body 1 comprises air bag main body 1-1, is arranged on air bag in turn A plurality of grinding airbags 1-2 above the main body 1-1, the airbag main body 1-1 and all the grinding airbags 1-2 are in a cylindrical structure and are made of materials with good elastic-plastic properties, such as rubber, Polyethylene material, the diameter of the grinding air bag 1-2 increases from top to bottom, and is arranged in a ladder shape, and the outer surface of all the grinding air bags 1-2 is provided with a high-pressure grinding sheet 2, and the grinding sheet 2 can be selected from Made of stainless steel and alloy materials.

The polishing body 1 is provided with a high-rigidity support body 2, which enhances the rigidity of the polishing body 1, prevents the compression deformation of the polishing body 1, and improves the polishing effect of the polishing airbag. The shape of the support body 2 is consistent with that of the polishing body 1 Similar in shape, the upper end of the support body 2 is set in a conical shape corresponding to the stepped shape of a plurality of polishing airbags 1-2, and the lower end is set in a cylindrical shape. As shown in Figure 3, the diameter of the support body 2 combines its rigidity and grinding The volume of the main body 1 is set scientifically and reasonably. On the premise of satisfying the rigidity, the diameter of the support body 2 is as small as possible, so that the gas for grinding the main body 1 is sufficient, which is beneficial to grinding.

Both ends of the airbag main body 1-1 are provided with a circular reinforcement disc 4, and the middle of the upper reinforcement disc 4 is provided with a round hole that allows all the polished airbags 1-2 to pass through, and is fixed on the top of the airbag main body 1-1. After the airbag main body 1-1 is squeezed to inflate it, especially the pressure on both ends of the airbag main body 1-1 is relatively large, the setting of the reinforcement disc 4 can effectively improve the strength of the airbag main body 1-1, and prevent the airbag main body 1-1 from breaking or deformation, effectively prolonging the service life of the airbag main body 1-1.

When the present invention is used: hold the airbag main body 1-1, select a suitable grinding airbag 1-2 in the grinding hole according to the size of the grinding hole, and squeeze the airbag main body 1-1 with an appropriate force, so that the entire grinding body 1 expands , to drive the polishing sheet 2 to expand outward, so that the polishing sheet is pressed in the small hole, and the small hole is polished by rotating the polishing body 1, which is easy to operate.

Of course, the above is only a detailed description of the preferred specific implementation of the present invention in conjunction with the accompanying drawings, and is not intended to limit the scope of the present invention. All equivalent changes made according to the principle, structure and structure of the present invention should be covered by this within the scope of protection of the invention.

Claims (3)

1. A grinding tool for the inner wall of a hole, characterized in that: it comprises a hollow grinding body (1), and the grinding body (1) comprises an air bag main body (1-1), which is successively arranged on the air bag main body (1-1) ) above a plurality of grinding airbags (1-2), the main body of the airbag (1-1) and all the grinding airbags (1-2) are in a cylindrical structure, and the diameter of the grinding airbags (1-2) is from the top It is arranged in a stepwise manner downwards, and the outer surfaces of all the polished airbags (1-2) are provided with high-pressure-resistant polishing sheets (2). 2. A grinding tool for the inner wall of a hole according to claim 1, characterized in that: the grinding body (1) is provided with a high rigidity support body (3). 3. A grinding tool for the inner wall of a hole according to claim 1 or 2, characterized in that: both ends of the airbag main body (1-1) are provided with circular reinforcing discs (4).