JPS58114816A - Band saw blade for cutting hard material - Google Patents

Abstract

PURPOSE:To prevent the occurrence of crack into the mother material of a blade by following method in which the mother material of a band saw blade is caused to be as smoothly as possible bent in a arcuate curve, thereby causing remarkable bending stress not to be generated at the edges of the blade tips. CONSTITUTION:A band saw blade 1 is composed of endless band like steel- mother material 2 which is provided with cutting tips 3 at certain interval on one edge of said blade, and protrusions 4 are formed between the cutting tips. The protrusions 4 are equipped on one side or on both sides of the mother material 2 and are made of synthetic rubber material or flexible metal. By this protrusions formed, the band saw is stretched to a pulley. When the band saw is driven, uniform curvature is formed for the band saw, and its life is prolonged.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a band saw blade for cutting hard materials such as stone, and this type of band saw blade is particularly susceptible to problems at the attachment part of the diamond tip, etc. that performs the cutting action. This relates to a structure that prevents the occurrence of racks.

There are two types of devices for cutting stones, etc., one using a circular saw blade and the other using a band saw blade. It is prized for cutting. However, one of the technical problems with this method is that, as shown in Fig. 8, the cutting tips that perform the direct cutting action are fixed at intervals to the base material 2' of the band saw blade, but they do not perform the cutting action. When driving this tire with this tire T'', the tip part will be prevented from curving if it is bent along the outer diameter of the tire.For this reason, the tip should be installed from the vicinity of the 9th border to 7th place C. This has the problem that the band saw blade tends to get stuck in the material, and the usable life of the band saw blade is not long enough.

The present invention has been developed in view of the above-mentioned drawbacks of the conventional device, and the edge of the tip shown in FIG. KL94 is designed to prevent the generation of cracks in the base material by preventing the generation of bending stress.

Hereinafter, the present invention will be specifically explained based on the embodiment shown in the drawings. Fig. 1 schematically shows the band saw blade 1 of the present invention (4) which is used to cut stone material W, and the band saw blade 1t-11 of the present invention is used for cutting tires T%TK! The band saw blade 1 is moved up and down from above with respect to the base material 2, and the band saw blade 1 is driven by running tires. This band saw blade 1 is provided with cutting tips 3t at intervals on one edge thereof, as shown in the enlarged diagram in FIG. This base material 2
This method uses an endless steel strip. On the other hand, the cutting tip 3 is made by sintering the diamond particles.
9. This thing is responsible for the direct cutting action. 4
Furthermore, although the cutting tip itself has a relatively simple block-like shape in the illustrated embodiment, it is of course possible for the cutting tip to take on various known configurations.
For such a band saw blade 1, an overhang 1s41 is constructed on the side surface of the base material 2 at the point where the cutting tip 3 is provided. As described later, this projecting portion 4 is for forming an average curvature when being driven by the tire T, so it is sufficient that it is formed at least on the inside of the curve of the base material. It is of course possible to provide it on both sides of the base material in order to maintain balance.This overhang s4 can take various shapes, which will be explained below. In the examples shown in Figures 2 to 4, another member is stretched over the base material 2, such as a pad made of synthetic rubber or a flexible metal material, etc. It is. For example, as shown in FIG. 4, it is more preferable to adopt a structure in which the thickness of the cross-sectional shape of the overhang 4 decreases as it approaches the cutting tip, thereby promoting smooth curvature. Furthermore, in the embodiment shown in FIG.
When cutting in this way, cutting fluid is actively introduced into the tip, resulting in excellent cutting performance. Also, in the embodiment shown in Fig. 6, the projecting portion 4 is formed by forming several strips in the shape of a pilot's strip.
□With this, even smoother curvature of the base material can be expected. In order to make it into a rectangular shape, it is possible to have teeth mt that are continuous on the base material side without making the individual protruding parts 4 completely independent (even if it is the one shown on the right side of Figure 6). There is no problem. The above-mentioned embodiment is an example in which a completely different algae material is stretched to form the overhang portion 4 on the base material 2, but in the embodiment shown in FIG. 7 described below, the base material 2 The protruding part 4 is embossed to form the protruding part 4. The protruding part is not necessarily limited to one, but may be formed in multiple numbers.

Although the present invention includes such a structure, even when this material is curved by the tire TK when cutting the stone material W, the curvature of the base material 1 is on average 9, and the curvature is concentrated in the chip part. It runs without any fear of bending moment being applied. Therefore, since the occurrence of bending stress in the tip part, which is unavoidable due to curvature in the past, is completely suppressed, the occurrence of crumples in the base material 2 due to it can also be completely prevented. According to the present invention, the life of the base material can be significantly extended, thereby providing a band saw blade for stone cutting with a long usable life.

[Brief explanation of the drawing]

Fig. 1 is a skeletal perspective view showing a cutting device equipped with a band saw blade for cutting hard materials according to the present invention, Fig. 5 is a perspective view showing the band saw blade assembly, Fig. 5 is a horizontal sectional view of the same, and Fig. 4 1 is a plan view showing another embodiment; FIG. FIG. 8 is a horizontal sectional view showing still another embodiment of the overhanging portion, and is a top view showing the conventional m'. 1; Band saw blade 2; Base material 3; Cutting tip 4; Overhang W; Stone material No.-・Diagram No. 2

Claims (1)

[Claims] In a knife in which cutting tips are attached at intervals to the edge of a base material made of an endless strip of metal material, at least on the inner surface of the base material, there is a gap between the cutting tips that is approximately equal to the overhang of the tips. A band saw blade for cutting hard materials, characterized in that a protruding portion is formed so as to be cut.