JP2519676Y2 - Diamond wire saw - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a diamond wire saw used for cutting stone and concrete.

[0002]

2. Description of the Related Art A diamond wire saw is known as one of cutting means for stone materials and concrete. This is because the diamond wire saw wound around the object to be cut is run endlessly with a motor-driven pulley,
The object to be cut is cut.

The general structure of a conventional diamond wire saw is shown in FIG. Diamond wire saw
Hollow cylindrical diamond beads 1 in which diamond fine particles are embedded are fixed at fixed intervals to a wire 3 via a sleeve 2 made of steel and also hollow cylindrical, which is fitted into the beads, and further fixed to the wire 3. The space between adjacent diamond beads 1 is formed by coating with a spacer 4 made of thermoplastic resin or rubber.

Here, the wire 3 is a steel cord 5 and a steel wire.
It is made up of twisted strands (in particular called strands 6) and is usually composed of six strands 7 that surround the core steel 5 in a spiral shape. Further, the diamond beads 1 and the wires 3 are fixed by caulking the periphery of the strand 7 with the sleeve 2 from six directions as shown in FIG. The core rope 5 is made of a steel wire, a strand, a rope or the like.

[0005]

However, in the above-mentioned conventional diamond wire saw, what is actually involved in fixing the diamond beads 1 and the wire 3 is the circle formed by the cross section of the wire 3 and There were only six points corresponding to the contact points with the hexagons formed by the cross section of the sleeve 2 that circumscribes. Therefore, the stress generated in the wire 3 due to the bending of the wire saw or the like is likely to concentrate on the above-mentioned 6 places, which is a major cause of lowering the durability of the wire 3.

On the other hand, when molding the spacer 4, it is necessary to set a high molding pressure in order to prevent molding defects.
However, since a gap is created between the wire 3 and the sleeve 2 at a portion other than the contact point due to the caulking, if the molding pressure is high, the resin or rubber that has flowed into the gap will stick out from between the sleeve 2 and the wire 3 on the opposite side. Will end up. as a result,
There was a problem that the composition was inhomogeneous between the protruding portion and the newly molded portion.

In order to prevent the resin or rubber from protruding, it is conceivable to make the clearance between the outer diameter of the wire 3 and the inner diameter of the sleeve 2 as small as possible.
In this case, since high dimensional accuracy is required for the outer diameter of the wire 3 and the inner diameter of the sleeve 2, there is a problem that productivity is reduced.

[0008]

According to the present invention, the number of corners of a polygon formed in the sleeve cross section of the portion where the wire is crimped is set larger than the number of strands.

[0009]

Since the number of contact points between the sleeve and the wire in the crimped portion of the wire is increased, the force applied to the wire is dispersed and the durability of the wire is improved. Further, since the gap between the sleeve and the wire in the same portion becomes small, the spacer can be molded under high pressure, and the deterioration of the performance of the spacer can be prevented.

[0010]

Embodiments of the present invention will now be described in more detail based on the embodiments.

The manufacturing process of the diamond wire saw of the present invention is shown below.

(1) A hollow cylindrical sleeve 2 made of steel is fitted into a hollow cylindrical diamond bead 1 in which fine diamond particles are embedded, and sintered and fixed.

(2) The wires 3 are passed through the holes of the sleeve 2 and the sleeves 2 are arranged at equal intervals.

(3) The sleeve 2 is a portion of the sleeve 2 where the diamond beads 1 are not fixed and the portion is swaged.
The diamond beads 1 are fixed to the wire 3 by caulking from the surroundings using a pressing machine so that the number of corners of the polygon formed in the cross section is larger than the number of strands 7 of the wire 3.

(4) The space between the diamond beads 1 is sequentially covered and molded with a spacer 4 made of resin or rubber.

FIGS. 2 to 5 show views corresponding to the above steps (1) to (4).

Here, since the number of strands 7 of the wire 3 is usually 6, in this embodiment, the number of polygonal corners formed in the cross section of the sleeve 2 where the wire 3 is crimped is defined as the number of strands. The octagon is two more than the number of seven.

In this embodiment, FIG. 1 is a cross-sectional view of the caulked portion in the process after caulking the sleeve 2 on the wire 3 and before forming the spacer 4. here,
The strand 7 is actually tightened and the wire 3 and the diamond bead 1 are fixed at eight positions corresponding to the contact points of the circle formed by the cross section of the wire 3 and the octagon formed by the cross section of the sleeve 2 circumscribing the circle. Met. That is, the number of corners of the polygon formed on the sleeve cross section of the portion where the wire was crimped was the same as the number of places where the sleeve was fastened to the wire.

On the other hand, in the gap formed between the sleeve 2 and the wire 3, the spacer 4 is formed at the time of molding as in the conventional method.
Although the resin or rubber of No. 2 flows in, the volume of the gap is much smaller than that of the conventional method, so that the protrusion of the resin or rubber from the gap during the molding of the spacer 4 was reduced.

The material of the wire 3 is SUS304.
Stainless steel was used, and the sleeve 2 was made of copper-plated steel or steel plated with copper and stainless steel. The spacer 4 is made of resin or rubber that is flexible and thermoplastic and that is hard to wear.

[0021]

As described above, in the present invention, since the number of corners of the polygon formed in the sleeve cross section of the crimped wire is equal to or more than the number of wire strands, the wire is accordingly generated. The stress was dispersed. As a result, metal fatigue in the wire was less likely to occur, and the durability of the wire was improved. At this time, the volume of the gap created between the sleeve and the wire is formed in the sleeve cross section of the part where the wire is crimped, even when the clearance between the outer diameter of the wire and the inner diameter of the spacer is large. It becomes smaller as the number of polygonal angles increases. Therefore, the amount of the resin and rubber of the spacer flowing into the gap is reduced, and accordingly, the protrusion of the resin and rubber from the gap during the molding of the spacer is reduced. As a result, the high-pressure molding of the spacer was possible, and the performance deterioration of the spacer was prevented.

[Brief description of drawings]

1] In the diamond wire saw of the present invention,
FIG. 11 is a transverse cross-sectional view of the caulked portion taken along line I-I in a step after caulking the sleeve on the wire and before performing spacer molding.

FIG. 2 is a vertical cross-sectional view showing a state in which a sleeve is fixed to diamond beads in the manufacturing process of the diamond wire saw of the present invention.

FIG. 3 is a vertical cross-sectional view showing a state in which sleeves passing through wires are arranged at equal intervals in the manufacturing process of the diamond wire saw of the present invention.

FIG. 4 is a vertical cross-sectional view showing a state in which the sleeve is caulked and the beads are fixed to the wire in the manufacturing process of the diamond wire saw of the present invention.

FIG. 5 is a vertical cross-sectional view showing a state in which beads are being formed by spacers in the manufacturing process of the diamond wire saw of the present invention.

FIG. 6 is a vertical cross-sectional view showing the structure of a conventional diamond wire saw.

FIG. 7 is a transverse cross-sectional view taken along line VII-VII of the caulking portion in a step of caulking the sleeve on the wire and before performing spacer molding in the conventional diamond wire saw.

[Explanation of symbols]

 1 Diamond beads 2 Sleeve 3 Wire 4 Spacer 5 Core rope 6 Strand 7 Strand

Claims (1)

(57) [Scope of utility model registration request] 1. A plurality of steel wires are twisted together.
A wire formed by spirally winding m strands around a heart rope, a plurality of sleeves crimped to the outer circumference of the wire and fixed at a constant pitch, and fixed to the outer circumference of each of the sleeves, In a diamond wire saw consisting of hollow cylindrical diamond beads in which diamond fine particles are embedded on the surface, the cross section of the crimped portion of the sleeve to the wire is a polygon of n angles larger than the number m of the strands. A diamond wire saw featuring eggplant.