Saw rotary to notch similar stones or materials

FRENCH REPUBLIC

SERVICE

iNTELLECTUAL INDUSTRIELLE of the

On PROBLEMS [...] no. 915,467 PATENT

International Classification

1.339.254 B 28 4-d

Society said: SUPER-CUT, INC. residing in the United States of America.

Demanded 15 November 1962, to 14 "12", to Paris.

26 August 1963 Issued by stopped.

(Bulletin official A property industrial, no. 40 of 1963.)

A art

of the application of a liquid coolant

to the flat sides of a saw blade of a moving

rotational movement, and intends to the

improving a way that practically the

whole of the liquid flows radially to

the outside and enter the trench which is

formed in the workpiece by the blade.

The periphery diamond saws used

in the building industry that use

cool water to form part of, or the

all of the cooling liquid-please

stands large amounts of water, the major

portion is d ' [...] lost, so that their

operation is quite expensive. If, -inciples

keeping to the means used at present

for applying a liquid cooling

saw blade in rotation, a jet or net

of water is directed against the blade near its

outer edge, high speed Pair to

next to the blade that the result-

without wetting caused by the blade. If on the water

is applied in the form of a mesh to the by-

tie forming the hub of the blade, the water

flows outwardly in all directly

claims and there is that a small portion which

enter the trench formed in the workpiece.

The present invention relates to a device

to direct a jet of water against a net or

saw blade driven [...] -

claim to the exact point where the speed is sufficiently-

member low that the water adheres to the

blade and is driven outwardly at an

spiral path, and leaves the edge of the

strip in the region of the groove to the excluded-

sion of the other portions of the edge.

In one main feature of the in-

prevention, a number of smaller streams or

water jets are applied to the one or

to both sides of a saw blade rotated at locations where all of the flows spirally on the blade and enter the trench of the respective regions of the latter where they have the maximum efficiency as a cooling liquid. With this firework, substantially all water is used and there is little, if even any, which is lost.

In another feature of the invention, there are provided means with which the positions of the water streams which are directed against the saw blade rotated may be modified to face different speeds of rotation of the blade, to different diameters of blades, in both directions of rotation of the blade, to different directions of movement of the blade across the workpiece, various cutting speeds. Other features of the invention result from the result of this description.

In appended schematic drawings:

The fig. 1 is a view in side elevation partially in cross section of a rotary saw applied with the improved device for providing the cooling liquid provided by the invention;

The fig. 2 is a cross-sectional view by the line 2-2 in fig. 1;

The fig. 3 is a cross-sectional view of the delivery conduit of the cooling liquid, this view showing how the location of the jets of liquid may be modified;

The fig. 4 is a cross-sectional view showing the location of liquid streams for face sawing operations down;

The fig. 5 is a view similar to the fig. 4 but showing the location of the jets to face sawing operations by mounting;

The fig. 6 is a view similar to the fig. 4 but showing the location of the jets to face sawing operations both down and up.

In the fig. 1 and 2 is represented a rotary saw 10 currently forming an undercut 12 in a panel14 rock or other material. The saw 10 includes a blade16 mounted on a drive shaft18 between flanges or clamping bosses 20 and22 and fixed thereto by a nut 24. The blade 16 comprises a guard comprising a fixed housing 26 and a movable cowl28 hinged at30 on this housing. Specific details of the saw 10 such that the support of the workpiece and the device for rotating the shaft 16 are not shown because they have nothing to do with the particular system of providing the cooling liquid which constitutes the actual invention.

Generally, the system improved liquid supply comprises means for directing a series of jets or fillets liquid against opposite sides 32 and34 of the blade of the saw 10 16 and other means whereby can be vary these liquid jets to face different sawing operations. The system includes two tubes 36 and38 of the liquid inlet, the tube 36 is attached to the housing26, while the tube38 is mounted on the cover 28. These two tubes 36 and38 liquid-supply are similarly constructed and are preferably welded in place as shown in 40.

Since the two tubes 36 and38 are similar, a single, in other words the tube 38 is described herein; it is of curved shape and is closed at its end 42. Its other end 44 projects through a hole 46 of the cover28. A hose 48 is clamped by a collar 50 on the end44 of the tube38 and is connected to a source of pressurised water supply. The tube 38 is arranged such on the cover 28 forming a keeper that, when the cover is closed, the tube is close to the flange 20 and partially surrounds it. Π is circular in cross-section and its inner wall is provided with a series of ten equally spaced holes 60 formed therein.

As shown in fig. 3, the hole openings 60 are countersunk as indicated at 62. Each is threaded to receive a cap 64 whose head 66 is shaved from the outer wall flow tube 38. The plugs 64 are cut slots 68 to receive a screwdriver. This that only some of the holes are plugged. The removal and mounting of the plugs 64 constitute a simple means for varying the amplitude of the effective curve represented by the series of holes 60 and thereby change the location of the jets or water streams which act on the saw blade 16.

To facilitate the understanding of the invention, is retrieved that the air surrounding of a saw blade during rotation is driven in round with that blade, such that the velocity of the air is high near the edge of the blade and low near its center. A net of liquid applied against the blade near its edge is therefore driven blow and from wetting same pitch the blade. A net applied against the blade in the region of its means is projected outwardly in all directions. Finally a net of water against the blade immediately outside its hub i.e. in a region where the air velocity is low enough wets the blade and propagates toward the edge thereof along a spiral path while diverging or spreading out by flowing outwardly.

In Figure 4, these theoretical considerations such that they were just discussed are illustrated schematically. Operation represented is known as "sawing down" since the cutting portion of the blade performs its work sawing effective per an up-and-down motion through the panel 14 while the latter moves in the direction indicated by the arrow. The fig. 4 is intended to highlight how the selective location of the jets of the coolant jetted out of the various holes 60 results in a supply of all of the liquid directly into the kerf regions which are highly spaced of its extent. With [...] diamond saws for cutting stones in particular, the width of the groove is always greater than the thickness of the blade. This is due to the overhang of the matrix carrying the diamonds of both sides of the blade as shown in 70 and72 ( see fig. 2) since the matrix 74 projects beyond the sides 76 and 78 of the blade 16. The overhang results in narrow spaces 80 and82 for entry of the liquid in the bled 12 of the workpiece14.

Since the also shows the fig. 4, the locations of the ten holes 60 in the adductor tube 38 are represented by the ten points indicated by 1 to 10. The threads or jet streams are directed against the blade 16 in the region immediately outside its hub. The spiral shape threads liquid constituted by these ten jets on the blade 16 is highlighted by the features spiral which carry corresponding numbers. Notably, only those n to n are employed herein and that the holes 60 which typically would produce additional liquid jets no. 6 to no. 10 are closed by means of complete 64.

The liquid jetted out of the hole 60 producing the jet no. 1 is projected from the periphery of the blade 16 in the form of a liquid, that have an average position that is represented by the meeting point no. 1. The point lies directly to the input of the groove 12 such that a certain portion of the web of liquid enters the space 80 while a portion, of this sheet is deposited on the panel 14 in front of this groove by wetting it ahead of the blade 16 which moves forwardly. The portion of the web of liquid entering the groove 12 is driven backward by the sweeper [...] the section 74 and wets the previous regions of the groove. The jet moves no. 2 of the same spiral and is projected from the blade at point no. 2 by wetting and the groove 12 in another region. The jet no. 3 in a spiral and is projected outwardly at point no. 3. The jet no. 4 is projected from the blade 16 at point no. 4. The jet no. 5 is projected from the blade at point no. 5, and the liquid serves to back driving the sludge resulting from the sawing.

The hole 60 that would result in the jet no. 6 is not employed since no lubrication is required at this point. The hole 60 is closed by a cap 64. Also, the holes that would produce the jets no. 7 to no. 10 are closed by plugs 64.

The representation comprised in fig. 5 is similar to that formed by the fig. 4 except that the panel 14 moves in the opposite direction, the operation being known as "sawing by mounting". The identification holes 60 of the cipher 1 included to the number 10 is the same as in fig. 4, while the spiral paths of the ' [...] of the liquid across the face of the blade 16 carry corresponding indications. The rotational speed of the saw blade 16, the diameter of the blade and all other factors affecting the flow of coolant across the face of the blade are the same. It should be noted that about the sawing operations by mounting there is no necessity operate the cooling liquid in the region where the matrix falls in the groove 12 on the posterior side of the blade since the matrix penetrates into the groove through the slot already formed. Therefore which the hole 60 which typically would produce a jet no. 1 is closed by a plug 64. The jets n to no. 6 included are allowed to remain effective, while the holes 60 through which jets [...] no. 7 to no. 10 are closed by plugs 64. As the case of sawing operations down (as shown in fig. 4) or approximately all of the liquid represented by the various jets is directed in the groove 12 where it allows either a lubrication, or a scan debris, or both. The location of the jets against the side 76 of the blade16 is repeated on the other side 78 of the blade.

In Figure 6, sawing operations by mounting and sawing down interest the same panel or more generally the same room are carried out. Sawing operations alternating up and sawing down occurs when the panel or more generally the workpiece 14 passes through the region in sawing in turn by movements in opposite directions. To tackle the type of sawing, the blowout holes jets no. 1 to no. 6 included are not plugged while the other holes are. The indications carried by the fig. 6 correspond to those that represent the fig. 4 and 5.

During operations sawing down i.e. when the panel 14 moves from right to left (looking Fig. 6) the jets no. 1 to no. 5 act as previously defined in fig. 4 for lubricating and driving the slurry or dross formed waste resulting from the sawing. During operations sawing by mounting, the panel 14 when moving from the left to right, the jets no. 2 to no. 6 which act as defined in fig. 5.

The invention is not limited to the particular arrangement of adductor tubes which is represented. Indeed, the nature and modes of mounting the tubes vary according to the different types of scoring saws stone guard comprising various arrangements. The which is essential, that is that there are provided tubes adductor supporting desired locations of the streams or threads cooling liquid on opposite sides of the saw blade rotated in a region located immediately outside the region of the hub of the blade, so that the threads of liquid that encounter the blade is driven according to