JP2605973Y2 - Polishing and grinding tools - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polishing / grinding tool suitable for polishing a curved surface.

[0002]

2. Description of the Related Art Various polishing and grinding tools have been developed, and many rubber polishing and grinding tools have been put to practical use. However, since hard abrasive / grinding material is always kept flat, when grinding / grinding a curved surface, the polishing / grinding material only comes into contact with the surface to be processed with a partially uneven force.
Efficient polishing and grinding could not be expected, and it was difficult to perform uniform polishing and grinding. Further, a soft material is also used for buffing and the like, but in this case, it is difficult to handle mechanically because it is soft as a whole, and it was also difficult to put it to practical use.

[0003]

SUMMARY OF THE INVENTION The present invention improves such a polishing and grinding tool and provides a polishing and grinding tool which can be used stably and efficiently when processing both flat and curved surfaces. That is the task.

[0004]

In the present invention, the above-mentioned problems have been solved by combining and integrating a base made of soft rubber and a polishing / grinding material.

Namely, polishing and grinding tool according to the present invention, the raised central portion of the circular flat plate in a columnar shape, a substrate made of soft rubber longitudinal section forms an inverted T-shape, upward about the columnar part of the base body support mounted so as to project the rod Tona
Abrasive and abrasive material is attached to the back of the circular flat plate of the base.
The abrasive / grinding material has abrasive grains dispersed in synthetic resin or rubber.
It is made of a solid whetstone, and is directly vulcanized and bonded to the back surface of the circular flat plate of the soft rubber base, and the rising part from the circular flat plate to the columnar part is shown in FIG.
As shown in the figure, a curved surface is formed, and radial grooves are provided on the entire surface of the abrasive / ground material.
It is characterized by having.

In the present invention, the base is made of soft rubber, and the support rod, that is, the operating shaft is attached to the columnar portion projecting upward from the center of the base. Thus, the columnar portion is easily bent with respect to the circular flat plate integrated with the abrasive / grinding material, and the circular flat plate made of soft rubber can also bend somewhat in a state integrated with the abrasive / grinding material. Therefore, the force applied to the support bar can be easily transmitted to the abrasive / grinding material, and operability can be improved and uniform polishing / grinding can be performed.

For example, when the surface to be processed is flat, the force applied to the support rod is transmitted perpendicularly to the surface of the abrasive / grinding material, and the surface to be processed can be polished / ground with an even force over the entire surface. Even when the processing surface is a curved surface, the columnar portion of the base is bent together with the support rod according to the curvature, and the force applied to the support rod is polished and ground so as to be bent at an acute angle with respect to the support rod. On the surface,
Because it can be applied substantially evenly, good operability,
It can be polished and ground.

In the present invention, in order to polish the curved surface efficiently, the diameter of the circular flat plate of the base is set to be 2 to 2 times the diameter of the columnar portion.
It is preferably formed about 5 times, particularly preferably about 2.5 to 3.5 times.

The abrasive / grinding material attached to the back of the circular flat plate of the base may be a circular flat plate, but the columnar portion of the base is easily changed in angle with respect to the circular flat portion by the movement of the support rod. That is, in order to improve operability), it is preferable to form the plate into an annular flat plate with a chipped central portion.

The substrate may be made of a soft rubber, that is, a rubber that is elastic and can be bent by applying a force. The rubber may be a natural rubber or a synthetic rubber. Further, as the polishing and grinding materials, in general, known as a hard grinding-polishing material, for example, although such solid grindstone having dispersed therein abrasive grains such as diamond or silicon carbide synthetic resin or rubber, and the like are used , These are made from soft rubber
To be integrated with the base by direct vulcanization bonding.
It is off.

[0011]

EXAMPLE 1 The product shown in FIG. 1 is formed by vulcanizing a resinoid grindstone having a JIS hardness of 80 to 90 as a polishing / grinding material 5 on the back surface of a circular flat plate 2 of a synthetic rubber substrate 1 having a JIS hardness of 60. It was done. The base 1 has a circular flat plate 2 having a diameter of 30 mm and an upper central portion raised to form a columnar portion 3 having a diameter of 8 to 10 mm and a length of 15 mm. Embedded therein is a stainless steel support rod 4 attached to the support rod. The abrasive / grinding material 5 which is vulcanized and bonded to the back surface of the circular flat plate 2 of the base body 1 has a circular shape with a small circular shape with a diameter of 10 mm at the center, and radial grooves are provided on the entire surface. (See FIGS. 2 and 3). In this product, the support rod 4 is directly connected to a motor and is used by rotating. The polishing and grinding material 5 can be applied to the flat and curved surfaces of the automobile parts very uniformly, and the efficiency is improved. Good polishing was possible.

[0012]

[0013]

According to the product of the present invention, since the columnar portion 3 is present at the center of the base 1 and the support bar 4 is attached to the columnar portion 3, the support 1 is moved in accordance with the movement of the support bar 4. It is easy to freely operate the abrasive / grinding material 5 integrated with the circular flat plate 2,
Further, since the base 1 is made of soft rubber, even when a curved surface is polished or ground, the force applied to the support rod 4 can be efficiently transmitted to the polished / ground material due to the elastic deformation of the base 1, thereby stably. And enable uniform polishing and grinding.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of the present invention.

FIG. 2 is a longitudinal sectional view of the product of FIG.

FIG. 3 is a bottom view of the product of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Substrate 2 Circular flat plate 3 Columnar part 4 Support rod 5 Polishing and grinding material

Claims (1)

(57) [Scope of request for utility model registration] A central portion of a circular flat plate (2) rises into a columnar shape, and a soft rubber base (1) having a substantially inverted T-shape in vertical cross section, and projects upward at the center of the column (3) of the base (1). And a polishing / grinding material is attached to the back surface of the circular flat plate 2 of the substrate 1, and the polishing / grinding material 5 is used to apply abrasive grains to a synthetic resin or rubber. It is made of a dispersed solid whetstone and is directly vulcanized and adhered to the back surface of the circular flat plate 2 of the soft rubber base 1, and the rising portion from the circular flat plate 2 to the columnar portion 3 is curved. A polishing / grinding tool characterized in that a surface of the polishing / grinding material 5 is provided and radial grooves are provided on the entire surface of the polishing / grinding material 5.