DE29607970U1 - Diamond saw rope - Google Patents

Description

Description

Title:

Diamond saw wire consisting of a wire rope and several abrasive cutting element sleeves arranged at an equal distance from each other on a wire rope.

State of the art:

The diamond saw wire is suitable for processing rock-like materials such as gravestones, concrete walls, etc. with wire saw machines, but diamond saw wires are also used in mines and quarries.

In order to retain a certain degree of flexibility, the set must not be provided with a diamond coating, for example electroplated, as this would be destroyed if it were to be deflected on a wire saw machine, i.e. subjected to constant bending stress. This is why such saw wires have a diamond coating arranged at intervals. This is generally achieved by diamond-coated cutting sleeves or cutting beads pushed onto the wire. These diamond-coated cutting elements consist almost exclusively of a metal base body onto which either a diamond-coated layer is sintered or the diamonds are attached using an electroplating process.

The space between the cutting beads is achieved by spacer sleeves, by individual support springs, by a plastic coating of the wire rope or by a combination of support springs and plastic.
The use of a saw wire with plastic spacers on the wire between the individual cutting elements has the advantage over the arrangement of spiral springs as intermediate links between the cutting elements that an extremely smooth concentricity of the saw wire is ensured during operation. For this purpose, the outer diameter of the sheath can seamlessly adapt to the

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Adjust the outside diameter of the cutting element sleeves, whereby even wear of the outside diameter and thus consistent concentricity of the cutting sleeves is ensured. This is not easily possible with coil springs or wire spirals as intermediate links. The advantage of coil springs as spacers is that the cutting sleeves are always brought back to their original position by the spring force, even after a slight displacement of the cutting sleeve. The cutting elements are sometimes squeezed, ie clamped onto the wire rope by mechanical deformation, which can damage the wire rope and thus lead to premature wear or breakage of the rope.
(Sources: DE 24 51 153 C2; DE 31 48 065 A1; DE 40 38 480 A1)

Problem:

The invention specified in the protection claim is based on the problem of designing a diamond saw wire in which simple sintered cutting elements without offset metal projections can be used, which adhere to the wire wire as well as directly crimped cutting elements, but do not have their disadvantages. In addition, the diamond saw wire should have a similarly good wire wire protection as is the case with wires with plastic or rubber spacers.

Solution:

These problems are solved by attaching the sintered cutting element to the carrier cable with a hard plastic and by creating the space between the beads with a soft, bondable plastic.

Benefits achieved:

The sawing tool according to the invention has several advantages over the known sawing tools, which are as follows:

1. By applying the plastics in a thermoplastic injection molding process, cavities of 0.01 mm and smaller are filled. This creates an extremely effective mechanical anchoring with the carrier cable.

2. The plastic casing that surrounds the diamond grinding element ensures that only the cutting surface of the diamond grinding element protrudes during operation, thus preventing damage caused by the grinding element becoming jammed during use.

3. When manufacturing the diamond grinding elements, a long metal carrier body can be dispensed with, which can cause damage to the rope due to its rigidity in the event of strong bends.

4. Because the outer diameter of the spacers is approximately the same as that of the diamond grinding elements, the running is smoother.

Further details and advantages of the invention are shown in the drawings and explained in more detail in the following description.

Description of an example:

Fig. 1 shows a schematic longitudinal section of a diamond saw wire, in which several diamond bodies (3) are pushed up on a carrier wire (1) and then secured to the wire wire with a hard plastic (2).

The spacer (4) between the diamond grinding bodies is an elastic plastic. Due to the freedom of design of the two plastics, it is possible to create a positive connection between the plastics. This prevents rock powder from getting onto the wire rope and slowly destroying it.

Fig. 2 shows a schematic cross-section of a diamond grinding element.

The plastic coating (2) completely encloses the diamond grinding element (3), except for its grinding surface, and is attached to the carrier cable (1). By directly spraying the plastic coating onto the cable, the diamond grinding element is firmly seated on the wire cable.

Claims (1)

Claim for protection:
Claim 1: Diamond saw wire, consisting of diamond grinding elements located on a support wire (1), is used for cutting rock-like materials by sliding parallel to the surface to be cut, the diamond grinding element consisting of a ring (3) whose axis coincides with that of the support wire, is characterized in that the diamond ring (3) is pushed onto the carrier rope (1) and is then directly secured to the carrier rope using an unreinforced or reinforced plastic or synthetic material (2) which has a higher ε-modulus according to ISO 527 than 500N/mm ² , Claim 2: Diamond saw wire according to claim 1, is characterized in that part of the distance (4) between the two diamond grinding elements (3) consists of a plastic or rubber which has a hardness less than 75 Shore D and forms a firm bond to the hard plastic which surrounds the cutting element.