JP2613851B2 - Gang saw blade - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gang saw blade. More specifically, the present invention relates to a gang saw blade that can replace a chip very easily by detachably attaching a superabrasive grain segment chip to a gang saw blade via a socket.

[0002]

2. Description of the Related Art A gang saw is provided with a plurality of blades each having superabrasive grain segment chips attached at regular intervals on an edge of a blade substrate made of quenched and polished special steel at regular intervals. This equipment cuts hard materials such as stone, refractory brick, glass, and fine ceramics at once by reciprocating. The number of blades to be stretched on the frame ranges from several to several tens, and a work material such as a stone is disposed under the gang saw, and the frame is cut by giving a cut while moving the frame back and forth. The gang saw has features such as high cutting speed, greatly shortened machining time, improved cutting accuracy and a smooth finished surface, and low power cost per cutting area. Widely used for cutting and the like. Conventionally, joining superabrasive grain segment chips to a gang saw blade substrate has been performed by joining superabrasive grain segment chips to the edge of the blade substrate at regular intervals by brazing. FIG. 1 is a perspective view of a conventional gang saw blade. In the conventional gang saw blade, the superabrasive grain segment chip 1 is directly brazed to the gang saw blade substrate 2. The superabrasive segment chips may be brazed to the gang saw blade substrate at equal intervals, or may be brazed such that wide intervals and narrow intervals are alternately located or at unequal intervals. In the gang saw blade, the blade substrate is perforated after brazing the chip for the purpose of withstanding the load at the time of cutting and maintaining the cutting accuracy.
Squatting is to press the blade substrate part near the brazed chip with a roller or the like in order to make the state where the tension is uniformly applied near the brazed chip of the gang saw blade substrate during cutting, Alternatively, it refers to an operation of hitting with a hammer or the like to give a plastic deformation to this portion and to make the gang saw blade substrate taut. The gang saw blade is used by brazing a new chip again when the superabrasive grain segment chip becomes worn and can no longer be used, but when re-brazing, it takes time to clean the blade substrate, etc. Depending on the dimensions of the work material, there is a part where the chip hits the work material and a part that does not hit the work material, and when there is a difference in chip wear, use a dressing grindstone to make the whole chip uniform, or replace it with a chip with the same height It is necessary to take time and effort, and to change the waist state of the gang saw blade substrate due to the influence of heat at the time of removing old chips by heating and at the time of re-brazing. There are various problems such as the generation of gang so that super abrasive grain segment tips can be easily attached and detached. Blade development of it has been desired.

[0003]

SUMMARY OF THE INVENTION Under such circumstances, the present invention does not require the trouble of mounting a superabrasive segment chip, and is capable of adjusting a gang saw blade having different degrees of chip wear. It is an object of the present invention to provide a gang saw blade capable of greatly reducing the influence of heat on a gang saw blade substrate.

[0004]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies to develop a gang saw blade having such excellent characteristics. It has been found that the superabrasive grain segment tip can be easily replaced by joining by using, and the present invention has been completed based on this finding. That is, the present invention provides: (1) a gang saw blade having a superabrasive grain segment tip attached thereto, the superabrasive grain segment tip being fixed to a negative socket or a positive socket, and a positive socket or a negative socket fitted to the socket. Is fixed to a gang saw blade substrate, and the negative socket and the positive socket are detachably fitted to each other in a gang saw blade.
The negative socket has a pair of claws, and the inner surface of the claws forms a tapered surface that intersects with the concave shape, the distance between the tips of the paired claws is shorter than the distance between the intersection lines of the tapered surfaces, The positive socket has a tapered surface that intersects in a convex shape that matches the tapered surface of the nail of the negative socket. (2) The distance A between the tips of the pair of claws is 0.2 to 2.0 mm shorter than the distance B between the intersection lines of the tapered surfaces. (3) The gang saw blade according to (1), (3) a plane having a distance D between a plane including the tip of the pair of claws and a plane including the intersection line of the two tapered surfaces and a plane including the intersection line of the two tapered surfaces. 0.4 to 1 of the distance E between the tapered surface and the innermost plane (4) The gang saw blade according to (1), wherein the material constituting the positive socket is larger than the material constituting the negative socket. A gang saw blade characterized by the following.

Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 2 is a perspective view of one embodiment of a negative socket used in the present invention, and FIG. 3 is a perspective view of one embodiment of a positive socket used in the present invention. In FIG. 2, a superabrasive grain segment chip 1 is joined to a negative socket 3 by brazing. The negative socket is formed with a negative socket tapered surface 5 which intersects concavely inside the pair of claws 4. In FIG. 3, a positive socket 6 is brazed to the gang saw blade substrate 2, and the positive socket is provided with a positive socket tapered surface 7 which intersects convexly. When the negative socket and the positive socket are fitted, the tapered surface of the negative socket and the tapered surface of the positive socket are in close contact with each other, and are strongly adhered by the spring stress of the nail of the negative socket. FIG. 4 is a cross-sectional view of one embodiment of a negative socket used in the present invention, and FIG. 5 is a cross-sectional view of one embodiment of a positive socket used in the present invention. In the negative socket of FIG. 4, a tapered surface 5 that intersects concavely is formed on the inner surface of the pair of claws 4, and the distance A between the tips of the pair of claws is equal to the intersection of the two tapered surfaces. It is shorter than the distance B between the lines 8. In the negative socket used for the gang saw blade of the present invention, the distance B and the distance A
Is between 0.2 and 2.0 mm, preferably between 0.3 and 1.5 mm,
More preferably, it is 0.4 to 1.0 mm. Distance B and distance A
If the difference is smaller than 0.2 mm, the force for fixing the negative socket to the positive socket is weak, and the negative socket may fall off from the positive socket during use of the gang saw. If the difference between the distance B and the distance A is greater than 2.0 mm, it becomes difficult to insert the negative socket into the positive socket, and permanent distortion may remain in the negative socket, which is not preferable. In the negative socket of FIG. 4, the distance C between the innermost portions of the tapered surface can be set arbitrarily, but the distance C is the width C ′ of the tip of the projection 9 of the positive socket.
Therefore, the distance C is preferably shorter than the distance A from the viewpoint of workability of inserting the negative socket into the positive socket.
In FIG. 4, the reference points for obtaining the distance A, the distance B, and the distance C are shown as intersections of two straight lines.
In the negative socket used for the gang saw blade of the present invention, one or two or more corners of the tip of the claw, the intersection line of the tapered surface, and the innermost portion of the tapered surface are formed into a curved surface. Can be. In FIG. 4, when the intersection line of the tapered surface or the corner of the innermost part of the tapered surface is taken and the curved surface is formed, the corresponding portion of the positive socket of FIG. To make a curved surface. From the viewpoint of easy handling of the negative socket and the positive socket, it is preferable that the tip of the claw and the innermost part of the tapered surface are curved surfaces.

In the negative socket used in the gang saw blade of the present invention, the distance D between the plane including the tips of the two claws and the plane including the intersection line of the two tapered surfaces, and the intersection of the two tapered surfaces The relationship of the distance E between the plane including the line and the plane at the innermost part of the tapered surface is as follows.
1.2 times, preferably the distance D is 0.5 to 1.1 times the distance E
Times, more preferably the distance D is 0.7 to 0.9 times the distance E. If the distance D is less than 0.4 times the distance E, the fixing force is weak, and the distance D may drop off during use. If the distance D exceeds 1.2 times the distance E, it is not preferable because it is deformed at the time of attachment / detachment or permanent distortion remains. In the positive socket used in the gang saw blade of the present invention, the shape between the plane including the intersection of the two tapered surfaces and the tip 10 of the positive socket is the same as the corresponding shape of the negative socket, and therefore the distance The distance C ′ and the distance C and the distance E ′ and the distance E are substantially equal. Here, "substantially equal" means that the distance C 'is greater than the distance C and the distance E' is greater than the distance E as long as the negative socket and the positive socket are suitable for fitting and close contact. That means. In the positive socket used in the present invention, the distance D ′ between the base portion 11 of the positive socket and the plane including the intersection line of the two tapered surfaces is equal to the plane including the tips of the two claws of the negative socket. It is necessary that the distance be not shorter than the distance D from the plane including the intersection line of the tapered surface. Normally, it is preferable to make the distance D 'longer than the distance D by several hundred microns to 1 mm to provide a gap between the tip of the nail of the negative socket and the base of the positive socket. The part between the tip of the nail of the negative socket and the plane containing the intersection of the two tapered surfaces is the slope of the tapered surface of this part, and the plane containing the intersection of the base of the positive socket and the two tapered surfaces. When the negative socket and the positive socket are fitted together, it is possible to make them close together by making the slope of the tapered surface equal. The shape of the portion close to the base of the protruding portion of the positive socket and not covered with the negative socket when the negative socket and the positive socket are fitted can be arbitrarily selected.

In the gang saw blade of the present invention,
In order to fit and mount the negative socket brazed with the superabrasive grain segment chips to the positive socket brazed to the gang saw blade substrate, a known method can be used without any particular limitation. By using the tool, it can be easily fitted and mounted.
FIG. 6 is a perspective view of a jig for mounting a negative socket.
In this drawing, a negative socket to which a superabrasive grain segment chip is brazed is pushed into a positive socket by a mounting jig 14 having a spring 13 to fit the negative socket and the positive socket. In the gang saw blade of the present invention, in order to remove the negative socket from the positive socket, a known method can be used without any particular limitation. For example, the negative socket can be easily removed by using a removal jig. FIG. 7 is a perspective view of a jig for removing a negative socket. In this drawing, the negative socket can be removed from the positive socket by supporting and pulling up the negative socket by the convex portion 16 at the lower end of the removal jig 15. In the gang saw blade of the present invention, the superabrasive grain segment tip can be removed and attached using a simple jig at the site of use in this manner, so that the blade is removed from the device like a conventional gang saw blade. Compared to transporting from the use site to the machine shop, attaching a new superabrasive segment chip by brazing, adjusting the strain generated on the gang saw blade substrate by the influence of heating by squatting, and transporting it again to the use site If it is, labor and cost can be greatly reduced. In the negative socket used for the gang saw blade of the present invention, not only one pair of claws but also a plurality of pairs can be provided. FIG. 8 is a perspective view of another embodiment of the negative socket used in the present invention. In this figure, the negative socket has two pairs of claws. FIG. 9 is a perspective view of another embodiment of the positive socket used in the present invention. The positive socket shown in this figure is for fitting the negative socket having two pairs of claws shown in FIG. When cutting with a gang saw, the force acting on the superabrasive grain segment chip parallel to the gang saw blade substrate is reduced by the end face 12 of the nail of the negative socket.
And, since it is received at the end face of the positive socket which is in contact with it, by increasing the number of claws of the negative socket, the force parallel to the gang saw blade substrate can be received in a distributed manner.

In the gang saw blade of the present invention, the positive socket structure can be directly machined on the gang saw blade instead of brazing the positive socket to the gang saw blade substrate. FIG. 10 is a perspective view of another embodiment of the positive socket used in the present invention. In this figure, a positive socket for fitting the negative socket of FIG. 8 is provided directly on the gang saw blade substrate. The shapes of the negative socket and the positive socket used in the gang saw blade of the present invention can be further changed as long as the object of the present invention is not impaired. For example, the negative socket and the positive socket can be fitted together with a tapered surface that is not a flat surface but a curved surface with a bulged central portion. Alternatively, a rib may be provided on the tapered surface of the negative socket or the positive socket, and a groove to be fitted with the rib may be provided on the tapered surface of the positive socket or the negative socket. In the gang saw blade of the present invention, as the super-abrasive grain segment tip, it is possible to select an appropriate material depending on the object to be cut, for example,
CBN, diamond and the like can be mentioned, but natural or artificial diamond is particularly preferable for cutting stone. As the diamond chip, a resin bond, a metal bond, a vitrified bond, or the like can be used, and a metal bond having a large bond strength and little deterioration can be particularly preferably used. The material constituting the negative socket used for the gang saw blade of the present invention can be used without particular limitation as long as it is quenched and tempered. Examples of such materials include SK material, SUS material, SCM material, SNCM material and the like can be mentioned. It is preferable that the brazing material used for brazing the superabrasive segment chips to the negative socket has good flow and wettability, and has high strength.
As such a brazing material, for example, silver brazing can be mentioned. As a heating method for brazing the superabrasive grain segment tip and the negative socket, a known method used for normal brazing can be used, and examples of such a method include laser welding, gas welding, and arc welding. welding,
High frequency heating and the like can be mentioned. Further, in the gang saw blade of the present invention, as means for mounting on the superabrasive grain segment tip and the negative socket, in addition to brazing, it can be mechanically mounted by bonding with an organic adhesive or screwing. .

In the gang saw blade of the present invention,
The material constituting the negative socket can be used without any particular limitation as long as it has good spring characteristics. Examples of such a material include spring steel, stainless steel, and shape memory alloy. Can be. In the gang saw blade of the present invention, the material forming the positive socket may be the same material as the material forming the negative socket, or may be a different material, for example, a normal steel material with low wear. . If the coefficient of thermal expansion of the material composing the positive socket is greater than the coefficient of thermal expansion of the material composing the negative socket, the negative socket and the positive socket will adhere tightly with the rise in the temperature of the socket when using a gang saw. Also, when removing the negative socket from the positive socket, it is preferable to cool both sockets, since the negative socket can be easily removed. In the gang saw blade of the present invention, the material constituting the gang saw blade substrate can be used without any particular limitation as long as it is quenched and tempered. Examples of such a material include stainless steel and tools. Steel, alloy tool steel, and the like can be given. The brazing material used for brazing the positive socket to the gang saw blade substrate preferably has a melting point of 650 to 800 ° C. As such a brazing material, for example, silver brazing can be mentioned. As a heating method for brazing the positive socket and the gang saw blade substrate, a known method used for normal brazing can be used. Examples of such a method include laser welding, gas welding, and arc welding. And high-frequency heating. In the gang saw blade of the present invention, a super-abrasive grain segment chip is brazed to a negative socket, a positive socket is brazed to a gang saw blade substrate, and both are inserted and fitted, so that the An abrasive segment tip can be attached. Or,
Braze the super abrasive segment tip to the positive socket,
The super-abrasive segment chip can be attached to the gang saw blade substrate by brazing the negative socket to the gang saw blade substrate, inserting and fitting the negative socket to the gang saw blade substrate. In the gang saw blade of the present invention,
By matching the negative socket and the positive socket with the tapered surface, the force in the direction perpendicular to the gang saw at the time of cutting is received by the closely tapered surface, and the force in the direction parallel to the gang saw is It is received by the end surface of the positive socket, and can sufficiently withstand the force applied during cutting by the reciprocating motion of the gang saw blade.

[0010]

Next, the present invention will be described in more detail by way of examples, which should not be construed as limiting the present invention. Example 1 A metal-bonded diamond chip having a length of 20 mm, a width of 4.5 mm, and a thickness of 10 mm was prepared by using a negative having the structure shown in FIG. The socket was brazed using silver brazing. The negative socket has a length of 31 mm, a width of 4.5 mm and a height of 7.5 mm. In FIG. 4, A = 2.1 mm, B = 2.5 mm, and C = 1.1 m.
m, D = 2.0 mm and E = 2.5 mm. However, the tip and the innermost part of the claws are curved. Two pairs of claws have a length of 6.0 mm in the gang saw blade direction.
One end face is placed 6.5 mm away from both ends of the negative socket, and the other end faces are provided 6.0 mm apart from each other. A positive socket having the structure shown in FIG. 9 capable of fitting with the above-mentioned negative socket and having a cross section shown in FIG.
It was brazed to a gang saw blade substrate made of stainless steel having a thickness of 0 mm and a blade thickness of 3.5 mm using silver brazing at a pitch of 150 mm. Positive socket, length 25
mm, width 4.5 mm and height 6.6 mm.
A ′ = 1.8 mm, B ′ = 2.5 mm, C ′ = 1.1 mm, D ′ = 2.
3 mm and E '= 2.5 mm. However, the tip has a curved surface so as to be in close contact with the innermost part of the negative socket. Since D 'is 0.3 mm longer than D, when the negative socket and the positive socket are fitted, a gap is formed between the tip of the nail of the negative socket and the base of the positive socket. Two gang saw blades at 30mm intervals, 3000mm long
X 500mm wide x 500mm high marble as processing material,
Cutting was performed at 100 strokes per minute at a cutting speed of 200 mm / hour. The cutting was performed satisfactorily from beginning to end, and the thickness accuracy of the processed plate material was good, being within 0.5 mm.

[0011]

According to the gang saw blade of the present invention, a negative socket having a new chip brazed can be used for a gang saw blade having no trouble such as cleaning at the time of conventional re-brazing, and also having a different degree of chip wear. Only need to be replaced, and it can be easily attached and detached at the work site. Also, there is no need to readjust the stiffness of the gang saw blade substrate without the influence of heat during re-brazing.

[Brief description of the drawings]

FIG. 1 is a perspective view of a conventional gang saw blade.

FIG. 2 is a perspective view of one embodiment of a negative socket used in the present invention.

FIG. 3 is a perspective view of one embodiment of a positive socket used in the present invention.

FIG. 4 is a cross-sectional view of one embodiment of a negative socket used in the present invention.

FIG. 5 is a cross-sectional view of one embodiment of a positive socket used in the present invention.

FIG. 6 is a perspective view of a jig for mounting a negative socket.

FIG. 7 is a perspective view of a jig for removing a negative socket.

FIG. 8 is a perspective view of another embodiment of the negative socket used in the present invention.

FIG. 9 is a perspective view of another embodiment of the positive socket used in the present invention.

FIG. 10 is a perspective view of another embodiment of the positive socket used in the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Super abrasive grain segment chip 2 Gang saw blade substrate 3 Negative socket 4 Claw 5 Negative socket taper surface 6 Positive socket 7 Positive socket taper surface 8 Crossing line of taper surface 9 Positive socket projection 10 Positive socket tip 11 Positive socket Base part 12 Nail socket claw end face 13 Spring 14 Mounting jig 15 Removal jig 16 Lower projection

Claims (4)

(57) [Claims] 1. A gear to which a superabrasive grain segment tip is attached.
Blade with a super abrasive grain segment
Affixed to a negative socket or a positive socket.
Insert a positive socket or negative socket
The negative socket and the positive socket are fixed to the blade substrate.
To a gang saw blade with a detachable fitting
And the negative socket has a pair of claws, and
Form a tapered surface where the surface intersects the concave shape, and make a pair of claws
Is shorter than the distance between the intersections of the tapered surfaces
And the positive socket is the tapered surface of the nail of the negative socket.
Has a tapered surface that intersects with the convex shape
Mating with the tapered surface to form a negative socket pair
Gann characterized by close contact by spring force of claws
Guso blade. 2. The distance A between the pair of claw tips is tapered.
0.2 to 2.0 mm shorter than the distance B between the intersection lines
The gang saw blade according to claim 1, wherein 3. A plane including the tip of a pair of claws and two tabs.
The distance D from the plane including the intersection line of the taper surface is two tapered surfaces
Distance between the plane containing the intersection line of and the innermost plane of the tapered surface
2. The method according to claim 1, wherein the value of E is 0.4 to 1.2 times.
The described gang saw blade. 4. The material constituting the positive socket has a coefficient of thermal expansion.
Material whose coefficient of thermal expansion is larger than that of the material constituting the negative socket
Gang saw blade characterized by the fact that it is a charge.