JPH045255Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a polishing wheel used for polishing various surfaces such as metal, concrete, and wood.

[Conventional technology]

When welding steel plates into a T-shape, it is necessary to polish the welded area before welding to remove rust, and after weld, to remove spatter scattered and attached to the welded area, that is, on and around the weld bead.

This removal polishing is carried out using a disc-shaped grindstone or a polishing wheel to which coated abrasive paper is adhesively fixed. The polishing wheel has coated abrasive paper glued on it.
There are flat type and radial type.The flat type has a disc-shaped coated abrasive paper glued and fixed to the back of the wheel substrate, and has the advantage of being easy to manufacture, but it is not compatible with the surface to be polished. There are drawbacks such as poor performance. The radial type has rectangular coated abrasive paper planted and fixed in a radial manner on the wheel base, and can improve compatibility with the surface to be polished and eliminate clogging of the coated abrasive paper.

[The problem that the idea aims to solve]

In conventional polishing wheels, since the surface to be polished is flat, the steel plate is welded in a T-shape, and two orthogonal surfaces cannot be polished at the same time (see Figure 5). That is, since polishing can only be done on one side at a time, there is a problem in that work efficiency is poor.

The object of the present invention is to provide a polishing wheel with improved work efficiency.

[Means to solve the problem]

In order to solve the above-mentioned problems, the present invention has a substantially isosceles triangular shape, has a spelling hole 5 in the center of the bottom side, has a notch 6 in the lower part of the lower oblique side, and has an abrasive grain 4.
An abrasive paper piece 2 formed by fixing abrasive paper 2 is cut out from one bottom corner of a substantially isosceles triangular shape, a binding hole 8 is formed approximately at the center of the bottom, and a notch 9 is formed at the bottom of the lower oblique side. A large number of auxiliary pieces 3 with abrasive grains 7 fixed thereto are alternately arranged radially with the bottom sides inward, and the binding strips 11 are inserted into the binding holes 5 and 8 approximately in the center of the bottom sides. A piece of abrasive paper 2 having a through hole 10 in the center.
and the auxiliary piece 3 constitute a conical abrasive body 1, a taper boss 12 that contracts toward the tip is inserted into the through hole 10 of the conical abrasive body 1, and the abrasive cloth paper piece 2 and the auxiliary piece 3 are cut out. The parts 6 and 9 are bound by a binding strip 11, and the lower portions of the abrasive paper piece 2 and the auxiliary piece 3 and the taper boss 12 are hardened with an adhesive 14.

[Effect]

By alternately binding the bottom of the approximately isosceles triangular abrasive cloth paper piece and the bottom of the auxiliary piece so that a through hole is formed in the center, and inserting a taper boss into the lower part of the through hole, The tip of the through hole becomes an abrasive body which is held in a conical shape, and the tip of the conical abrasive body can be fitted between steel plates perpendicular to the T-shape.

〔Example〕

An embodiment of the present invention will be described with reference to FIGS. 1 to 4.

In the figure, 1 is a plurality of abrasive cloth paper pieces 2 each having a substantially isosceles triangular shape and auxiliary pieces 3 having one bottom corner of the substantially isosceles triangular shape cut out, which are alternately bound radially inward at their bases. A conical abrasive body with flexibility and elasticity. The coated abrasive paper piece 2 has abrasive grains 4 adhered to it only on one side, and as shown in FIG. 3, a hole 5 is formed approximately in the center of the bottom side, and a notch 6 is carved in the lower part of the lower oblique side. . Similar to the cloth abrasive paper piece 2, the auxiliary piece 3 also has abrasive grains 7 fixed on only one side, and as shown in FIG. A binding hole 8 and a notch 9 are formed on the lower diagonal side. The surfaces of the coated abrasive paper piece 2 and the auxiliary piece 3 on which the abrasive grains 4 and 7 are fixed face the same direction, and the cut ends of the auxiliary piece 3 are aligned upward, and the bottom of the coated abrasive paper piece 2 and the side of the auxiliary piece 3 are aligned. The binding strips 11 are inserted into each of the binding holes 5 and 8 and tied so that a through hole 10 is formed inside with the bottom side. A tapered cone-shaped taper boss 12 is inserted into the through hole 10 up to the vicinity where the binding strip 11 is tied.
Then, the auxiliary pieces 3 whose tips are cut out are interposed between the abrasive cloth pieces 2, and since there is no auxiliary piece 3 between the tips of the abrasive cloth paper pieces 2, there is a space between these pieces. As shown in FIG. 2, the end openings of both pieces 2 and 3 are reduced in diameter into a conical shape using the binding strip body 11 as a fulcrum to form a conical polishing body 1. In this state, the binding strip 11 is also wrapped around the notches 6 and 9, and this portion is fixed with an adhesive 14.

The spindle 13 at the other end of the taper boss 12 is connected to a motor (not shown), and as the motor rotates, the conical polishing body 1 fixed to the taper boss 12 also rotates. When the tip of the conical abrasive body 1 is brought into contact with the welded part of the steel plate perpendicular to the T shape, the tip will be at approximately 90°.
Therefore, both orthogonal steel plates can be polished at the same time.

The above describes one embodiment of the present invention, and the present invention is not limited to this embodiment, and the design can be changed within the gist of the present invention. For example, the notch groove may not be carved. The abrasive grains can be fixed only with an adhesive, or the abrasive grains may not be fixed to the auxiliary piece, or conversely, the abrasive grains can be fixed to both sides of the abrasive cloth paper piece and the auxiliary piece. In addition, the narrow angle of the oblique sides of the abrasive cloth paper piece and the auxiliary piece is not particularly limited and is free, such as setting the cone angle of the conical abrasive body 1 to 90° or more, or setting the apex angle of the abrasive cloth paper piece, the auxiliary piece, and the isosceles triangle. The portion may be rounded or arcuate.

[Effect of idea]

According to the present invention, by forming a conical polishing body by radially binding a large number of approximately isosceles triangular abrasive paper pieces, it is possible to polish two orthogonal surfaces at once, improving work efficiency. can be achieved. Further, since the conical polishing body has flexibility and elasticity, it can closely follow the irregularities of the surface to be polished and perform good polishing.

[Brief explanation of the drawing]

FIG. 1 is an overall perspective view of an embodiment of the present invention;
FIG. 2 is a cross-sectional perspective view of a portion showing the internal bound state, FIG. 3 is a front view of the abrasive cloth piece alone, and FIG. 4 is a front view of the auxiliary piece alone. FIG. 5 is a diagram showing a conventional polishing wheel in use. 1... Conical abrasive body, 2... Abrasive cloth paper piece, 3...
... Auxiliary piece, 4 ... Abrasive grain, 5 ... Draw hole, 6 ... Notch, 7 ... Abrasive grain, 8 ... Mark hole, 9 ... Notch, 10 ... Through hole, 11 ... ... bound striae, 12
... Taper boss, 14 ... Adhesive, 13 ... Spindle.

Claims (1)

[Scope of utility model registration request] It has an approximately isosceles triangular shape, a binding hole is formed approximately in the center of the base, and a notch is provided at the bottom of the lower hypotenuse.
A piece of abrasive paper to which abrasive grains are fixed is cut off at one bottom corner of a substantially isosceles triangle, a hole is formed approximately at the center of the bottom, and a notch is provided at the bottom of the lower oblique side. , A large number of auxiliary pieces with abrasive grains fixed thereon are arranged radially with the bases inward, and the binding strips are inserted through the holes in the center of the bases, and a through hole is formed in the center. A conical abrasive body is made up of the abrasive cloth paper piece and the auxiliary piece, and a tapered boss that contracts toward the tip is inserted into the through hole of the conical abrasive body, and the abrasive cloth paper piece and the auxiliary piece are connected at the notch. Tied with a binding striation,
A polishing wheel characterized in that the lower part of the polishing cloth paper piece and the auxiliary piece and the taper boss are fixed with adhesive.