WO2008129330A1

WO2008129330A1 - Triple action diamond wire saw

Info

Publication number: WO2008129330A1
Application number: PCT/GR2008/000022
Authority: WO
Inventors: Georgios Papadopoulos
Original assignee: Georgios Papadopoulos
Priority date: 2007-04-24
Filing date: 2008-04-04
Publication date: 2008-10-30
Also published as: GR1005920B

Abstract

A diamond wire saw for cutting volumes of rock from quarries consisting in a diamond wire saw carrying diamonddiferous pearls, whereby said pearls are allocated in at least two classes, a first class and a second class, whereby the second class includes diamonddiferous pearls of different diameter and hardness in comparison with the pearls of the first class.

Description

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TRIPLE ACTION DIAMOND WIRE SAW

The invention is referred in the transformation of any diamond wire saw in triple action diamond wire saw. The diamond wire saw wire intends to cut various materials as marbles, granites, concrete, ferro concrete etc.

With this transformation, we achieve a considerable increase of the average cutting speed, without lose the performance, which had prior the realised actions for the achievement of this aim.

The diamond wire saw (Figure lα) constituted mainly by the diamantiferous pearls (drawing Al) and the materials of assembly (drawings A2, A3, A4, A5, A6). The diamantiferous pearls, depending on the materials and the cutting speed, which we would like to cut, are less or more strengthened or otherwise soft up to very hard ones. They are strengthened by the conditions of manufacture, of the pressure, the temperature or by the constitution of materials, which are constituted, the quality of diamonds, the metals etc, and they have a diameter (δ), mostly ranged from 8 up to 12 mm and to a diamantiferous radius (p) in a depth from 1 up to 2 mm. The materials of assembly are those that keep the diamantiferous pearls in precise distances, so that they can cut the predetermined maters, hi the case of cutting of non-destructive materials as the marbles etc, are used the following materials: wire rope (drawing A2), springs (A3), rings (A4), stop rings (A5), joints (A6). hi the case of destructive materials cutting, as the granites etc, instead of springs and rings, special materials as resins, plastic or other materials, which are not worn out easily (A7) and they retain the diamantiferous pearls in their predetermined places. The companies of diamantiferous tools, which manufacture the diamantiferous pearls and more over the diamond wire saws, they use for their manufacture diamantiferous pearls of same diameter (figure lα, lβ) for instance if in a wire we have 28 pearls /meter and all the 28 have the same diameter. They may have conical figure (A8) or something else, the important thing is that, they are of the same diameter; it is pointed out because the invention is directly related with the pearls diameter. The manufacturing companies, in their intention to improve the diamond wire saw cutting speed; they are faced face the considerable performance falls, as in the following example.

Wire length 50 meters, with 28 pearls/metre, pearls of 11 mm, with an average hardness, of diamantiferous radius depth of 1, 5 mm, cutting material of dolomitic marble, it cuts 4000 square metres, with an average cutting speed of 11,5 square metres/ hour.

Wire length 50 metres, with 28 soft pearls /metre, with the same diameter and diamantiferous diameter, with the same cutting material, it cuts 2000 square metres., with an average cutting speed of 12,5 square metres/ hour.

Conclusion: In order to increase the average cutting speed of a diamond wire saw to a percentage 8-10%, they are loose up to half performance.

All the diamantiferous pearls have slow initial speed because firstly, even if they reveal the diamonds with technical way, they haven't completely revealed with result the friction to be intense, thus the wires either having soft or hard pearls they have analogous initial speed, secondly the initial diameter until to worn out, due to the size, it produces a slow speed. Those reasons influent the increase of the average cutting speed.

The softer pearls since have been worn from 15 up to 20% they start to produce higher speeds, but due to the reason they are worn fast, they are not accomplish to increase considerably the average cutting speed.

A diamond wire saw, cuts faster firstly because in case that you are going to remove the diamantiferous pearls, for instance instead of the 28 pearls/meter, we place 26, secondly if you are going to minimize the pearls diameter and in both cases due to smaller diamantiferous surface, hence less friction. However, in these cases we have a considerable fall of performance.

Therefore results the problem. How a diamantiferous wire cuts faster, without looses its performance. Does the invention of triple action diamond wire saw comes to provide a solution in this question and how?

The three actions, which we are going to analyze below, can change any diamond wire saw, from slower one to 20% and faster, without loses the performance, which had prior taking place the realisation of its transformation. This difference regarding the above-mentioned example, it is possible to get an average cutting speed of 14, 40 square metres/hour from 11, 5, without loses the performance of the 4000 square metres /hour.

The invention brings a new era, regarding the relation between the average cutting speed and the performance of the diamond wire saw. The three actions can be applied in every diamond wire saw due to the reason that they are based in the same method. This method applies, the same assembly materials for each case (drawings A2,A3,A4,A5,A6,A7), _a p^ _Qς ^₆ J_nJ^₃J J₃Jg₆ diamantiferous pearls (drawings lα, 2α) and the reinforced smaller diameter pearls (drawing B 1 , figure 2γ), which we describe below.

Analysis of the three actions.

FIRST ACTION (figure 2): In any diamond wire saw, we apply the same method, by replacing a part of the initial large diameter diamantiferous pearls, (figure lα, 2α) with an equal number, of more reinforced (Bl, figure 2γ) smaller diameter pearls (approximately 4%) for instance: In a diamond wire saw with 28 pearls/metre, with pearls diameter 11,00 mm (which we are going to call them large diameter pearls), we replace the 30% or 40% or 50% or any percentage we wish, which will be proportional of the increase of the selected cutting speed developing our wire, with reinforced pearls 10,60mm diameter (which we are going to call them small diameter pearls). If in our example we are going to replace the 30% that is 9 pearls, then after every two large diameter pearls, we place a small diameter reinforced pearl, in order to exists equal distribution in the entire wire (figure 2β), with this change we achieve to bring in contact with the material that we wish to cut, considerably less pearls instead (19 pearls instead of 28), this has as result the increase of the cutting speed, due to less friction of the 19 pearls instead of 28. Therefore the problem of the slow initial speed of all wires, it is solved with the application of first action, contact of less pearls in the initial cutting stage, higher cutting speed.

SECOND ACTION (figure 3): Since we have resolved the problem of the initial cutting speed, we have to resolve the problem of the intense wear, which have the less pearls/metre. This (problem) undertakes the application of the second action. Since in the beginning the wire works the large pearls diameter, it is worn out and the large diameter pearls reach gradually the small diameter pearls (figure 3,δα=δγ), in this stage all pearls come in contact all with the cutting material, thus it is suspended the intense wear. The cutting speed is reduced, due to the reason that not all pearls work henceforth, the reduction is important, because the diameter has been minimized. In the above mentioned example, the 19 pearls/metre of initial diameter 11 ,00mm when they will be worn out and reach the diameter of 10,60mm of the 9 pearls, cut henceforth all the 28 pearls/metre, suspending the wear, decrease a little the cutting speed. In this phase all pearls are working and it is suspended the intense wear, we have the application of second action.

THIRD ACTION (figure 4): Therefore, since all pearls they have reached the same diameter and the wire suspended the intense wear, the small diameter reinforced pearls undertake the application of the third action of the small diameter reinforced pearls (Bl, figure 2γ). Due to the fact that the pearls are reinforced, comparatively with the large diameter pearls, this creates the preconditions so that the wire performance is extended a lot, and because the reinforced pearls retain the wear of the rest ones that are softer. The more the pearls are worn out the more minimize their diameter (δγl). This has as result the continuously increasing of the cutting wire, that along with the suspending of the wear, which is exercised by the reinforced pearls, it is extended the prolongation of its performance. In the stage that the wire cuts very fast, the prolongation of performance, gives us the result, the considerable increase of the average cutting speed, without loosing the performance, which had our wire prior its transformation to a triple action wire.

The present invention can be comprehended completely by the description of the example, in combination with the attached drawings, which realised in a Macedonian dolomitic marble quarry and proved the considerable increase of the diamond wire saw cutting speed, without it loses at all the performance had before prior be converted to a triple action wire.

The figure lα demonstrates a part of the diamond wire saw of 50 meters , with 28 pearls/metre of medium hardness of the same diameter, pearl diameter of 11,00 mm, diamantiferous radius 1,5 mm of depth, with assembly materials (drawings A2,A3,A4,A5,A6), cutting material of Macedonian dolomitic marble, with wire cutting BENETI 50 HP, cut 4000 square meters, with average cutting speed 11,5 square metres/hour.

The figure lβ demonstrates a part of diamond wire saw of 50 meters, which the unique difference with the figure lα wire is that the pearls are soft, it has been used the wire cutting, and this because existed the wish of increase of average cutting speed. The performance of this wire was 2000 square metres/hour, with an average cutting speed of 12, 5 square metres/hour.

The Figure 2 demonstrates a part of diamond wire saw of 50 meters, with 28 pearls/metre, from which the 19 pearls are the pearls of the figure lα and the 9 pearls are reinforced ones of smaller diameter of 10,6 mm figure 2γ, which replaced the corresponded pearls of the figure lα at the position of 3,6,9,12 etc. (every two pearls of the figure Ia one pearl of the figure 2γ), the rest of the assembly materials are identical ones with those of the wire of the figure lα, and it has been used the same wire cutting. The performance of this wire was 4000 square/metres, with an average cutting speed of 14, 4 square metres/hour.

From the example of figure lα and the figure 1 β, derives the conclusion that with the current possibilities of the companies, regarding an increase of 8 - 10% of the average cutting speed of a diamond wire saw it is lost up to half of the performance (instead of 4000 square metres/hour to 2000 square metres/hour) However, the conclusion derived from the figure 2 and of the triple action, diamond wire saw, it is that we achieve AN INCREASE OF THE AVERAGE CUTTING SPEED 25% and maintain the, SAME PERFORMANCE.

Claims

1. The diamond wire saw cutting of rock volumes from quarries, which is consisted from a diamond wire saw carrier pearls and it is characterized by the characteristic that the diamondiferous pearls are allocated at least in two classes, the first class, and a second class, where the second class includes diamondiferous pearls of different diameter and hardness in comparison with the pearls of the first class.

2. The diamond wire saw cutting of rock volumes in quarries according to the first (1) capability which is characterized by the characteristic that the diamondiferous pearls of the second class are of smaller diameter and of higher hardness from those of the first class.

3. The diamond wire saw cutting of rock volumes in quarries according to the capabilities 1 &2, which is characterized by the characteristic that in every diamondiferous pearl of the first class is interchanged on the wire with a diamondiferous pearl of the second class.

4. The diamond wire saw cutting of rock volumes in quarries according to the capabilities 1&2, which is characterized by the characteristic that in every two diamondiferous pearls of the second class are interchanged on the wire with one diamondiferous pearl of the second class.

5. The diamond wire saw cutting of rock volumes in quarries according to the capabilities 1&2, which is characterized by the characteristic that in every three diamondiferous pearls of the first class are interchanged on the wire with one diamondiferous pearl of the second class.

6. The diamond wire saw cutting of rock volumes in quarries according to the capabilities 1&2, which is characterized by the characteristic that in every four diamondiferous pearls of the first class are interchanged with one diamondiferous pearl on the wire with one diamondiferous pearl of the second class.