JPS604692Y2 - cutting blade - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a cutting blade used in a cutting saw for cutting hard materials such as stone and concrete.

In the conventional cutting blade, both the base metal 11 and the cutting blade have shapes as shown in FIGS. 7 and 8.

That is, the base metal 11 has a semicircular recessed part 11a and a cut 11b, and the cutting edge 13 is plated with one to several layers of abrasive grains by electrodeposition on the front, back, and plane above the bottom of the cut. It was bonded to the base metal 11 by metal.

Such a cutting blade has a small abrasive layer and has a short service life.

The cutting edge part 13 having such a structure can also be formed by powder molding using metal powder, but since the shape is complex and the cutting edge layer is thin, the manufacturing technique requires skill, and the mold cost is high and the overall cost is low. manufacturing costs have increased.

Therefore, the present invention has a simple cutting edge structure with strong bonding strength.
The purpose is to provide a cutting blade with a thick abrasive grain layer and long life.

An embodiment of this invention shown in the drawings will be described below.

FIG. 1 shows an example in which the cutting blade of the present invention is applied to a band-shaped saw.

The base metal 1 is made of an iron plate, a stainless steel plate, a phosphor bronze plate, or the like, and projections 2 for fixing the cutting blade are formed at regular intervals on the upper part.

A cylindrical or cylindrical cutting blade 3 is fitted into the protrusion 2 and fixed so that a space is created between the cutting blades 3.

The cutting edge part 3 is formed into a cylinder by bonding abrasive grains such as diamond, carborundum, boron titanide, and alundum with bond materials such as metal bond, ceramic bond, and vitrified bond, and the center of the cylinder is Form a base coupling hole.

The base coupling hole can be a blind hole as shown in FIGS. 3 and 4, or a common hole as shown in FIG. 5.

The cutting edge portion may be formed so that more abrasive grains are contained in the plane direction and less abrasive grains are contained in the bottom direction.

FIG. 2 is a plan view of the present invention, and the cutting edge portion 3 is circular when viewed from above.

When the cutting edge is cylindrical, a space is formed at the center of the cutting edge 3 and acts as a chip pocket.

FIG. 9 is a plan view of another embodiment of the present invention, in which a prismatic cutting edge 3 is coupled to the base 1.

FIG. 3 is a sectional view taken along line XX in FIG. 2, and the protrusion 2 at the tip of the base metal 1 is fitted into the base coupling hole formed at the center of the cylindrical cutting edge, and silver solder, solder, etc. They are joined together using brazing filler metal.

FIG. 4 is a longitudinal sectional view taken along line Y--Y in FIG. 2, and the base metal 1 is formed to be smaller in width than the cutting edge 3 to facilitate removal of cutting.

In the embodiment shown in FIG. 5, the base coupling hole formed in the cutting edge part is a common hole, the cutting edge part has a cylindrical shape, and a space 4 is formed in the center of the cutting edge part 3.

This space 4 functions as a chip pocket and is effective in removing chips and introducing grinding fluid.

FIG. 6 shows an embodiment in which the base metal is applied to a blade in the form of a disk.

This is a case in which a protrusion 2 is formed on the outer periphery of a disc-shaped base metal, a cutting edge is fitted into the protrusion 2, and the protrusion 2 is joined by brazing.

As explained above, the present invention has a structure in which protrusions are provided at regular intervals on the base metal, and the cutting blades are fitted into these protrusions, so there is no risk of the cutting blades peeling off from the base metal during use. Also, since a space is formed between the cutting edges, the strip steel can be bent easily, and it also acts as a chip pocket, which is excellent for removing chips and introducing grinding fluid. demonstrate.

[Brief explanation of drawings]

Fig. 1 is a front view of the present invention, Fig. 2 is a plan view of the present invention, Fig. 3 is a sectional view taken along line X-X in Fig. 2, and Fig. 4 is a Y-Y in Fig. 2.
5 is a sectional view of another embodiment of the present invention, and FIG. 6 is a partially sectional front view of another embodiment of the present invention. FIG. 7 is a partially sectional front view of a conventional cutting blade, and FIG. 8 is a sectional view taken along line Z-2 in FIG. FIG. 9 is a plan view of another embodiment of the present invention. 1...Base metal, 2...Protrusion, 3
... Curved blade part, 4... Space.

Claims (1)

[Scope of utility model registration request] A base bonding hole is formed approximately in the center of a cylindrical or prismatic cutting edge formed by bonding abrasive grains such as diamond or borax with a bonding agent, and the cutting edge is fitted into a protrusion provided on the base metal. A cutting blade characterized by being fixed together.