JPH0556356U - Small grinding wheel - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent the sanding wheel, which is formed by radially arranging sandpaper pieces, from burning. [Structure] A cylindrical core material made of metal is used, sandpaper pieces are adhered to the outer peripheral surface side thereof with an adhesive, and disk-shaped wheel covers are fitted to both end sides of the core material, and a rotary shaft is attached to the wheel cover. Attach. [Effect] The sand paper piece can be cooled from both sides and the inner diameter surface side through the wheel cover and the core material, and the entire cooling can be obtained, so that the cooling effect is excellent and no baking occurs.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention is a polishing wheel that replaces a grinding wheel, in which strip-shaped pieces made of sandpaper are densely planted on the outer peripheral side of the boss wheel, and the outer peripheral side of these strip-shaped pieces is polished. The present invention relates to a polishing wheel adapted to do so.

[0002]

[Prior Art]

 As an example of a conventional polishing wheel, a large one is as shown in FIGS. 2 to 4. In this large-sized polishing wheel 1, a large number of strip-shaped sandpaper pieces 2 are densely planted in an annular groove 4 on the outer peripheral side of a ring-shaped boss wheel 3 to form a brush wheel 5, and Wheel covers 6 are fitted on both ends. On the other hand, the conventional small polishing wheel is as shown in FIG. 5 or FIG. In the small grinding wheel 7 shown in FIG. 5, the strip-shaped sandpaper piece 2 is densely planted in the annular groove 9 on the outer peripheral side of the disk-shaped boss wheel 8 to form the brush wheel 10. In addition, the small grinding wheel 11 shown in FIG. 6 firmly adheres the sand paper piece 2 to the outer peripheral surface side of the wooden columnar core material 12 with the adhesive 13, and attaches it to each side of the sand paper piece 2. The ring 14 is fitted and adhered to form a brush wheel 15.

In the polishing work using the large-sized polishing wheel 1 and the small-sized polishing wheels 7 and 11, the polishing wheels 1, 7 and 11 are attached to the rotary shaft 16 and rotated at high speed. Polishing is performed by pressing against metal, wood, synthetic resin, and other materials to be polished. For example, when polishing the inner surface of the pipe material, as shown in FIG. 7, the inner surface of the pipe 17 is revolved while rotating the polishing wheels 1, 7 and 11, and the pipe 17 is rotated in the forward and reverse directions as necessary. I'm going to rotate it to either.

[0004]

[Problems to be solved by the device]

 By the way, when polishing a large diameter pipe material using the large-sized polishing wheel 1 when polishing the pipe material 17, a sufficient space for radiating polishing heat is formed between the polishing wheel 1 and the inner surface of the pipe material 17. There is no problem because it is done. However, when the small-diameter pipe wheels 7 and 11 are used to polish a small-diameter pipe material 17, there is not enough space between the polishing wheel and the inner surface of the pipe material, and the frictional heat (on the polishing surface) There is a problem that a high temperature (about 500 ° C.) is trapped inside the pipe material 17 and causes the sandpaper piece 2 of the polishing wheels 7 and 11 and the wooden core material 12 and the adhesive of each part to be baked. Such baking causes deterioration and carbonization of the sandpaper piece 2, and has a fatal drawback that the sandpaper piece 2 loses its autogenous effect during normal polishing, resulting in poor polishing. In order to prevent burning, cooling water is usually sprayed from the rear side of the polishing surface as shown in FIGS. 5 and 6, and polishing work is performed while cooling. However, the cooling water is sprayed only from one side, and in particular, the sand paper piece 2 and the entire polishing wheel cannot be cooled from the inner diameter side of the polishing wheel, so that the seizure is surely prevented. It was impossible.

[0005]

[Means for Solving the Problems]

 SUMMARY OF THE INVENTION The present invention has been improved and removed in view of the above-mentioned problems of the related art. Even when polishing a small-diameter pipe material, it is a small size with excellent cooling action that can suppress the generation of polishing heat. It is intended to provide the polishing wheel of.

In order to solve the above-mentioned problems, the means adopted by the present invention is that a large number of unit pieces made of sandpaper are continuously and radially arranged on the outer peripheral surface side of a metal-made cylindrical core material. A brush wheel is formed by closely adhering to each other, a disk-shaped wheel cover is fitted on both end surfaces of the core material, and a mounting hole for mounting a rotating shaft is provided on the wheel cover. It is a small grinding wheel.

[0007]

[Action]

 The polishing wheel of the present invention uses a metal cylindrical core material, sandpaper pieces are adhered to the outer peripheral surface side of the core material with an adhesive, and disk-shaped wheel covers are fitted to both end sides of the core material. The rotating shaft is attached to the cover. With such a polishing wheel, a sufficient cooling effect can be obtained even when polishing the inner surface of a small-diameter pipe material, and it is possible to prevent baking due to the polishing heat. That is, the wheel cover and the metal core material are cooled by the cooling water sprayed from the rear side, and the sandpaper piece can be cooled from the inner diameter surface side and entirely. Therefore, baking due to the heat of polishing does not occur.

[0008]

【Example】

 The structure of the present invention will be described below with reference to the embodiments shown in the drawings.

FIG. 1 is a vertical cross-sectional view of a polishing wheel 18 according to an embodiment of the present invention. As shown in the figure, in this embodiment, strip-shaped sandpaper pieces 21 are radially and closely planted on the outer peripheral surface side of a metal-made cylindrical core material 19 with an adhesive 20 interposed therebetween. Rings 22, 22 are fitted and attached to each one side of the super-piece 21 via an adhesive to form a brush ring 23. Then, metal wheel covers 24, 24 are fitted on both end surfaces of the metal core material 19, respectively. The wheel covers 24, 24 are provided with mounting holes 26 for the rotating shafts 25, and are inserted and fixed via nuts 27.

Next, the inner surface polishing work of a small-diameter pipe material by the polishing wheel 18 thus configured will be described. First, as in the conventional case shown in FIG. 7, the polishing wheel 18 is rotated to polish the inner surface of the pipe material and revolve along the inner surface of the pipe material. Then, if necessary, the pipe material is rotated in the forward direction or the reverse direction so that a predetermined relative speed with the polishing wheel 18 can be obtained.

During this polishing, cooling water is sprayed from the rear side as in the conventional case. Thus, in the present embodiment, the cooling water cools the metal wheel cover 27, and the metal cylindrical core member 19 on the inner side is cooled through the wheel cover 27. Further, the wheel cover 27 on the forward side is also cooled by being transmitted through the core material 19. Therefore, in the polishing wheel 18 of the present embodiment, the sand paper piece 21 can be particularly cooled from the inner diameter surface side via the core material 19, and the overall cooling can be performed through the wheel covers 27, 27 on both sides. The sandpaper piece 21 does not burn due to heat generated on the polishing surface. Therefore, the sandpaper pieces 21 generate new polishing surfaces one after another due to the self-generated effect due to the progress of polishing, and good polishing can be obtained.

By the way, the present invention is not limited to the above-described embodiments, but can be appropriately modified. For example, two or more polishing wheels 18 may be provided on the rotary shaft 25 so that the polishing wheel 18 is of a multi-spindle type. Even in this case, the effect of cooling the sandpaper piece is superior to that in the conventional cases shown in FIGS. 5 and 6. This is because the polishing wheels 18 adjacent to each other are continuously provided with a metallic material through the wheel cover 27 and the core material 19, and the cooling action of the cooling water is transmitted through the metallic material.

[0013]

[Effect of the device]

 As described above, according to the present invention, the metal core material having a cylindrical shape is used, the sand paper pieces are adhered to the outer peripheral surface of the core material with the adhesive, and the disk-shaped wheel covers are fitted to both end sides of the core material. The rotation shaft is attached to the wheel cover. Therefore, the sand paper piece can be cooled from both sides and the inner diameter surface side of the sand paper piece through the metal material. Therefore, the entire polishing wheel can be cooled, and the sandpaper pieces and the adhesive will not be burned by the polishing heat generated on the polished surface. In other words, the sandpaper piece can be guaranteed to be self-generated, and good polishing can be obtained.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a polishing wheel according to the present invention.

FIG. 2 is a perspective view of a conventional large-sized polishing wheel.

FIG. 3 is a perspective view showing a sandpaper piece in a conventional large-sized polishing wheel.

FIG. 4 is a vertical cross-sectional view of a conventional large-sized polishing wheel.

FIG. 5 is a vertical cross-sectional view of a conventional small polishing wheel.

FIG. 6 is a vertical cross-sectional view of another conventional small grinding wheel.

FIG. 7 is a front view showing a state in which a pipe inner surface side is polished by a conventional polishing wheel.

[Explanation of symbols]

 18 ... Abrasive wheel 19 ... Metal core material 20 ... Adhesive 21 ... Sandpaper piece 23 ... Brush wheel 24 ... Wheel cover 25 ... Rotating shaft

Claims (1)

[Scope of utility model registration request] 1. An outer peripheral surface side of a metal-made cylindrical core material,
A large number of unit pieces made of sandpaper are radially and closely planted to form a brush ring, and disk-shaped wheel covers are fitted to both end surfaces of the core material, and a rotary shaft is attached to the wheel covers. Small grinding wheel with mounting holes for