JPH08336749A - Cutting edge mounting method for wire saw, and cutting edge thereof - Google Patents

Abstract

PURPOSE: To provide a wire saw for cutting stone or concrete in which a core metal for mounting a cutting edge can be firmly fixed without idling or moving even when used for a long-term. CONSTITUTION: This method comprises forming three or more slits 2b in the end circumferential direction of a core metal 2a, when a plurality of cutting edges are longitudinally pressure-connected and fixed to a wire rope 1 at prescribed intervals through the core metal 2, and pressure-connecting the slit parts 2b after the core metal 2a is inserted to the wire 1, thereby mounting cutting edges 3, and this cutting edge comprises the cutting edge 3 provided according to this method.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to stone, concrete,
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of attaching a cutting blade of a wire saw used for cutting building materials and the like and the cutting blade.

[0002]

2. Description of the Related Art Conventionally, as a wire saw used for cutting stones, concrete, building materials, etc., as shown in FIGS. 4 and 5, a plurality of metal strands 1a are twisted to form a plurality of wires. Strand of the central strand 1c
And the side strand 1b that surrounds the periphery of the wire rope 1. And, it is known that a cutting blade 3 to which diamond beads are fixed via a cored bar 2 is crimp-fixed at a predetermined interval in the longitudinal direction of the wire rope 1 by caulking, and these are coated with a resin 4. ing.

However, according to the method of crimping and fixing the end portion of the cored bar 2 by caulking, when the wire rope 1 is fatigued and the wire rope is broken or the wire rope is bent when it is used for a long period of time. When excessive tension is applied suddenly, the wire rope is strongly restrained, and the wire rope wire near the caulking part causes internal friction violently or plastically deforms, so that the wire rope 1 is ruptured earlier. There was a problem.

Therefore, recently, in order to solve such a problem, as in Japanese Patent Laid-Open No. 2-59274, a locking groove is provided at the end of the core metal so that the locking groove is filled with resin. There have been proposed, such as Japanese Utility Model Publication No. Hei 6-27329, in which an annular sleeve corresponding to a core bar is provided with a protrusion serving as a locking portion.

[0005]

However, since all of these methods rely only on the adhesive force with the resins, the idling in the circumferential direction can be prevented for a short period of time, but they are used for a long time. Then, the core bar moves in the longitudinal direction of the wire,
There was a problem that it could not be used as a wire saw.

The present invention provides a wire saw in which the cored bar is firmly fixed to the wire, even if it is used for a long period of time, the cored bar does not idle in the circumferential direction and does not move in the longitudinal direction. The purpose is.

[0007]

In order to solve the above-mentioned problems, the present invention cuts a wire saw in which a plurality of cutting blades are crimped and fixed at predetermined intervals in the longitudinal direction of a wire rope through a core metal. In the blade mounting method, three or more slits are formed in the circumferential direction of the end portion of the core metal, the core metal is inserted into the wire, and then the slit portion is crimped to attach the cutting blade to the wire. In a cutting blade of a wire saw in which a plurality of cutting blades are pressure-bonded to each other in a longitudinal direction of a wire rope at predetermined intervals via a cored bar, in a circumferential direction of a cored bar for attaching the cutting blades, 3
The means is to form one or more slits.

[0008]

According to the present invention, three or more slits are formed in the circumferential direction of the end portion of the cored bar, and the cutting blade is attached to the wire by crimping the slits of the cored bar. When the caulking process is applied, the end of the core bar applies external pressure to the wire rope to increase the fixing force with the wire rope, and when excessive tension or bending is applied to the wire rope, the core between the slits The metal part is pushed by the wire rope and is elastically or plastically deformed, which prevents the wire rope from being excessively restrained, which in turn reduces the internal frictional force of the wire rope and prevents plastic deformation of the wire. It will play a role and the breakage of the wire rope can be significantly reduced.

When forming the slits in the core metal, the number of the slits is set to three or more in the circumferential direction of the end portion. If the number is less than three, the caulking effect is not obtained, but if the number is too large, the strength is lost. It is an appropriate number of three or more.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a first embodiment of the present invention at B- in FIG.
2 is a vertical sectional view, and FIG. 3 is a partially cutaway overall perspective view. In the present invention, three or more slits 2b are formed in the circumferential direction of the end portion of the cored bar 2a, the cored bar is inserted into the wire rope 1, and then the slits are crimped to cut the cutting blade 3 into the wire rope 1. I attached it to.

When forming the slits 2b, it is preferable to provide the slits 2b in the circumferential direction of the end portion within a range of 3 or more and 6 or less from the viewpoint of exerting the crimping effect and securing the strength.
I made one.

By doing so, the synergistic effect of the caulking of the end of the cored bar and the fixing force of the resin to the wire is exerted, and the cutting blade 3 can be firmly fixed to the wire rope 1. Therefore, it is possible to obtain a wire saw that does not break the wire rope or move the core bar even after long-term use.

[0013]

According to the present invention, the cutting blade can be firmly fixed to the wire rope by the synergistic effect of the caulking process of the end of the cored bar provided with the slit and the fixing force of the resin to the wire. . Therefore, even if the wire saw is used for a long period of time, the core metal does not rotate or move without being broken, and the function as the wire saw can be maintained for a long period of time.

[Brief description of drawings]

FIG. 1 is a sectional view taken along line BB of FIG.

FIG. 2 is a vertical sectional view of a wire saw showing an embodiment of the present invention.

FIG. 3 is a partial cutaway perspective view showing an embodiment of the present invention.

FIG. 4 is a sectional view taken along line AA of FIG.

FIG. 5 is a vertical sectional view of a conventional wire saw.

[Description of sign]

 1 Wire Rope 1a Metal Element Wire 1b Side Strand 1c Central Strand 2 Core Bar 2a Core Bar 2b Slit 3 Cutting Blade 4 Resins

Claims (2)

[Claims] 1. A method of attaching a cutting blade of a wire saw, wherein a plurality of cutting blades are pressure-bonded to each other in a longitudinal direction of a wire rope at predetermined intervals via a cored bar, in a circumferential direction of an end portion of the cored bar. A method of attaching a cutting blade to a diamond wire saw, comprising forming three or more slits, inserting the cored bar into a wire, and then crimping the slit portion to attach the cutting blade to the wire. 2. A cutting edge of a wire saw in which a plurality of cutting blades are pressure-bonded to each other in a longitudinal direction of a wire rope at predetermined intervals via a cored bar, and a metal core end portion for mounting the cutting blades. A wire saw cutting blade having three or more slits formed in the circumferential direction.