JP2729206B2 - Segments and segmental saws - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a segment and a segmental saw having improved durability.

[0002]

2. Description of the Related Art As shown in FIGS. 5 and 6, in a conventional segmental saw, a large number of segments 12 are fitted around a disc-shaped body plate 11 and fixed by caulking with rivets 13. Furthermore, in order to eliminate the deflection of the segments 12 to each other, a semicircular rivet hole 14 is formed at both ends in the circumferential direction of each segment 12, the crimping Rukoto with rivet 15 which is inserted into the rivet hole 14, the segment
12 oscillate in the thickness direction outside the body plate 11
(Publication No. 17-4178)
Report) . Note that the tip is fixed to the body plate with a tip saw.
For example, Japanese Patent Application Laid-Open No. 2-48175 describes
On the outer periphery of the groove-shaped mounting piece as described in
And fix the adjacent mounting pieces to each other
A structure for engaging in a radial direction is known.
In a detachable cutting wheel, for example, Japanese Patent Application Laid-Open No. 2-284873
As described in Japanese Patent Publication No.
The ridge and the concave groove extending radially between the holding body and the body plate are fitted.
And the support as a prior art
An ant tenon is formed on the end face opposite to the whetstone
A structure is known in which this dovetail is fitted into a dovetail groove.

[0003]

Problems to be Solved by the Invention
According to the conventional example described in No. 78 , each segment 12
Riveting for eliminating runout is required, and the number of assembling steps is increased. In addition , the rivet hole 14 is formed between the groove 16 for the intaglio fitting of the segment 12 and the blade portion 17, so that the blade portion 17 is formed. Stress is concentrated between the rivet hole 14 and the rivet hole 14 so that cracks are likely to occur, and particularly the rigidity in the lateral direction is weak
Therefore, cracks are more likely to occur when a force in the thickness direction is applied.
There is a problem that Kunar. In addition, the above-mentioned JP-A-2-4817
The structure described in No. 5 is suitable for a segmental saw.
If used, one segment is connected to the shell
Rivet and the segments on both sides of the rivet
Seg by centrifugal force combined with the holding force of the existing rivet
It is possible to prevent the separation of the
It is necessary to provide a mounting piece on the
The chips located on the side are restrained from each other in the thickness direction
It is not connected like this,
The rigidity is lower than the conventional example described in JP-A-7-4178.
And cannot prevent the chip from swaying at the time of cutting.
Must be a segment made of traditional materials
Would not be able to withstand high-speed hot cutting.
Segments made from materials other than those used from
The problem that you can not get a hot saw using
is there. Furthermore, it is described in the above-mentioned JP-A-2-284873.
The first structure, namely, the mounting piece of the cutting wheel and the body plate
Are assembled by fitting the ridges and grooves provided in the radial direction.
Even when the structure is applied to a segmental saw,
The mounting pieces or cutting whetstones are mutually
Since it is separated, it can prevent the blade tip from rolling more
Is difficult, and the elements that have been
Unless the segment is made of wood, it can withstand high-speed hot cutting
Are no longer available, and
Obtain a hot saw using segments made of outside materials
There is a problem that cannot be done.

The present invention has been completed in view of the above technical problems, and can reduce the number of assembling steps.
Not only cracks in the segment by the thickness direction of the force is extremely improved stiffness so unlikely to occur, especially in Hottoso, traditional stiffness, it was impossible to segmental saw by impact shortage Segment the material
The object of the present invention is to provide a segment and a segmental saw that can be used for a segmental saw.

[0005]

The segment of the present invention comprises:
Assuming a fan-shaped segment fixed around the body plate, to achieve the above purpose ,
Circumferentially recessed radially outside of the body plate and adjacent
Mated with each other to restrain each other in the thickness direction
The present invention is characterized in that an actual groove or an intaglio groove is provided, or an actual or intaglio fruit that protrudes in the circumferential direction corresponding to the actual groove or the inro cage.

[0006] The segment of the present invention is
A real groove or an intaglio groove is recessed at one edge of
The other end has a corresponding fruit or an indigo fruit projecting therefrom . When using this type of segment
In each case, the actual groove or inro groove of each segment, or the actual groove
Or, align the direction of the pillows, and turn the actual groove of each segment in order.
Alternatively, fit the next segment or the actual pillow in the pillow groove
So that the edges of each segment
They are connected so as to check each other in the thickness direction, so that
Complements mechanical properties such as rigidity in the thickness direction and impact resistance
In other words, the rigidity and impact resistance of the segment
In addition to being able to use one type of segment.
This is the most advantageous in reducing costs.

[0007] The segment of the present invention includes
On both edges in the direction
Either the corresponding fruit or the inro fruit is provided
Also included. For this type of segment,
Segment with a real groove or an intaglio groove at both edges in the direction
And the center or both ends of the center
Must be used in pairs. This real groove
Is the actual groove or the actual groove of the segment
Or fit the fruit of the segment with the pillow or the pillow
By combining them, these pairs of segments
The edges are connected to each other so as to restrain each other in the thickness direction.
Can be And these pairs connected to each other
One of the two ends of the segment (segment pair)
Groove or Inro groove
Place. Therefore, one of the actual grooves or the two
Has a groove or a groove at both ends in the circumferential direction.
May be fitted with the fruit of the segment to be
In addition, a real groove or an intaglio groove is provided at one end edge, and the other end edge is provided.
In addition, the actual or the actual inro corresponding to this actual or inro groove
The actual segment of the projecting segment or
It may be. Similarly, the other end of the segment pair
The actual groove or the inro
By fitting it into the actual groove or the inro groove of the grooved segment
In addition, a real groove or an intaglio groove is recessed at one end edge,
At the other end edge, a fruit or
The actual groove or the groove of the segment where the pillow is projected
May be fitted. And especially the segments
If an even number is provided, both edges in the circumferential direction
Segment having a real groove or an intaglio groove in the part,
A segment with a fruit or an inro fruit at both edges
By alternately arranging the segments in two different directions,
Can be kind.

[0008] Further, the segmental saw of the present invention comprises a body plate.
And a number of sector segments fixed around it
And the edges of adjacent segments are
Are connected to each other on the outside so as to restrain each other in the thickness direction.
That the segmental saw assumption, in order to achieve the above object, the outer edge than the barrel plate in the adjacent segment
The edges are connected to the actual groove or the inro groove provided on one side.
In response to this, fit the actual or inro real provided on the other side
By combining them so that they restrain each other in the thickness direction.
Are connected .

The segment used in the segmental saw of the present invention
In the detailed description of the segments of the present invention,
As mentioned earlier, each segment is
Has an actual groove or an intaglio groove on one edge and the other edge
The part has a fruit or an inro, and the actual groove or
Real or spigot fruit segments adjacent to the pillbox grooves include those which fit of <br/>. When to use this type of segment
In the actual groove or inro groove of each segment, or actual or
Or, align the directions of the pills,
Insert the next segment fruit or Inro fruit into the groove or Inro groove
By joining, the edges of each segment
Check each other in the thickness direction on the outside in the radial direction,
Strength or rigidity can be compensated. This
Ri, is possible to improve the mechanical properties such as stiffness and impact resistance
In addition, it is advantageous because it exhibits excellent durability against lateral blur. Moreover, in this case, the segment
This is even more beneficial because only one type of client can be used.

[0010] In addition, a real groove or a mark is provided on both edges in the circumferential direction.
A segment with a cage groove
Is used as a pair with a segment having an inro
Also, the actual groove of the segment having the actual groove or the intaglio groove or
In the groove of the inro, a fruit or a segment having an inro
Are mated with Inro Minami to form these paired segments.
Each other restrain their edges in the thickness direction.
Can be linked together. Furthermore, this segment pair
In the actual groove or inro groove at one end, the actual or inro fruit at both ends
Segment or one end edge with a real groove or inro groove
Is recessed and corresponds to the actual groove or the inro groove on the other edge
Of the segment where the fruit or
Or, while fitting the Inro Minami, the other end of this segment pair
Real or Inro grooves, with actual grooves or Inro grooves at both edges
Segment or one end edge is concave
Provided at the other end edge, corresponding to the actual groove or the inro groove.
The actual groove or the segment of the segment where
By fitting into the groove, the adjacent segments
Check each other in the thickness direction of each other on the radial outside of the body plate
Can be linked together. As a result, rigidity and impact resistance
In addition to improving mechanical properties such as
Is also advantageous because it exhibits excellent durability.

In addition, an even number of segments are provided.
Half of the segments are solid grooves or cages at both ends in the circumferential direction.
It has a groove, the other half of which is at both ends in the circumferential direction.
To have a real or an inro fruit, these two types
The segments are alternately arranged around the shell plate,
Adjacent to the actual groove of the segment having the inro groove or the inro groove
By fitting the actual segment
The segments are connected so that they restrain each other in the thickness direction.
If it is, the actual groove of adjacent segments or
Adjacent to the inro groove by fitting the actual or inro groove
Segments that are to be placed on the outside of the body plate in the radial direction
Stiffness as a result
In addition to being able to increase the impact resistance,
Are also useful because they exhibit excellent durability. And this
In the case of, you can use two types of segments
More useful.

In the present invention, the material of the segment is appropriately selected according to the workpiece to be cut and the temperature conditions. For example, in the case of segments used for cold saws, special tool steel, high-speed steel, etc. may be used,
In the case of a hot saw, for example, in the case of a segment used for cutting special steel, stainless steel, bearing steel, etc., die steel (JIS SKD), Hitachi Metals Ltd. YXR3, Y
XR33 (trade name), carbide, ceramic, or the like may be used.

In the present invention, the material of the body plate is not particularly limited as long as it has the required mechanical strength. For example, carbon steel for machine structure conventionally used for body plates ( For example, JIS S45C, S55C, and the like, and special tool steel (for example, JIS SKS5) can be used.

In the segmental saw of the present invention, the structure for fixing the segments to the body plate is not particularly limited. For example, the thickness of the outer peripheral edge of the body plate is reduced to form an ink stalk, and the inside of each segment is formed. A well-known structure may be adopted in which an intaglio groove corresponding to this indigo fruit is formed on the periphery, and each segment is fitted in the indigo cage on the body plate and fastened together by rivets or the like.

[0015]

According to the present invention, when fixing a segment to the body plate, the edges of adjacent segments are attached to one of them.
The actual groove or the inro groove formed on the other side
Are fitted with the inro grooves, so that the edges of each segment restrain each other in the thickness direction on the radial outside of the body plate.
Mated together , which allows each other
The strength or rigidity of the steel. Paraphrase
Impact resistance to the force in the thickness direction of one segment
Mechanical properties such as strength and rigidity
As a result, lateral blurring is less likely to occur,
Cracks due to lateral blur are less likely to occur.

Further, since the end portions of the segments are connected to each other by the so-called actual connection or the intaglio connection, there is no notch which causes stress concentration between the outer peripheral edge and the inner peripheral edge. Therefore, it has an effect of significantly improving rigidity.

[0017] Thus, the edge portions of the thus each segment, the so-called real seam or plate by spigot seam
On coupled to mutually check each other in the thickness direction, that such does not exist notch lead to stress concentration between the outer edge and inner peripheral edge
The in mechanical properties such as rigidity and impact resistance is than can be significantly improved, thus to segmental saw thus formed has excellent rigidity and impact resistance, yet act superior to the lateral shake It has.

[0018]

The present invention will be described below in detail with reference to examples, but the present invention is not limited to these examples. As shown in FIGS. 1 to 3, a segment 1 according to an embodiment of the present invention has an outer peripheral edge 2 formed in a sawtooth shape, and an inner peripheral edge 3.
The grooved groove 5 as a fitting portion for fitting the body plate 4 is formed in a fan shape.

At one other edge of the segment 1, an ink groove 6 is formed, and at the other end, an ink groove 7 corresponding to the ink groove 6 is formed.

The ink groove 6 and the ink groove 7 can be formed discontinuously or partially from the groove bottom of the ink groove 5 of the inner peripheral edge 3 to the outer peripheral edge 2. In order to reliably prevent run-out between the adjacent segments 1 and minimize the surface pressure acting on the joining surface, in this embodiment, the intaglio groove 6 and the intaglio fruit 7 are connected to the intaglio groove of the inner peripheral edge 3. 5 from the groove bottom to the outer peripheral edge 2.

The material of the segment 1 is appropriately selected according to the workpiece to be cut and the temperature conditions. For example, special tool steel, high speed steel, etc. may be used for segments used for cold saws, and dies are used for segments used for cutting special steel, stainless steel, bearing steel, etc. for hot saws. Steel (J
IS SKD), YXR3, YXR3 manufactured by Hitachi Metals, Ltd.
3 (trade name), carbide, ceramic, or the like may be used.

The material of the body plate 4 is not particularly limited as long as it has the required mechanical strength. For example, carbon steel for mechanical structures conventionally used for body plates (for example, JIS S45C) , S55C, etc.), special tool steel (for example, J
IS SKS5) or the like is used.

As shown in FIG. 2, on the outer peripheral edge of the body plate 4, there is provided an ink basket nut 8 formed to be thinner in correspondence with the ink groove 5 formed in the inner peripheral edge 3 of each segment 1. As shown in FIG. 3, the ink groves 8 are inserted into the ink groove 5 of each segment 1, and the ink groves 7 of the adjacent segment 1 are fitted into the ink groove 6 formed at the edge of each segment 1. Thereafter, as shown in FIG. 4, the tightening ring 10 is set, and a number of tightening bolts 11 provided corresponding to each segment 1 are uniformly tightened in the tightening ring 10.
Each segment 1 is fixed to the body plate 4 by a procedure in which the inner peripheral edge portion 3 of each segment 1 and the outer peripheral edge portion of the body plate 4 are fastened together by a plurality of (6 in this case) rivets 9.

In the segmental saw having the segments 1, the edges of the segments 1 are connected to each other by the so-called intaglio joints at the same time as the segments 1 are assembled to the body plate 4. It is not necessary to caulk the end portions with rivets, so that the number of steps can be reduced and the cost can be reduced.

Further, since the edge portions of the segments 1 are connected to each other by so-called indigo joining, the cross-sectional area of the edge portion of each segment 1 is reduced, and there is no notch which causes stress concentration. The rigidity of the edge of the first member is increased, so that cracks are less likely to occur, and the durability is improved.

[0026]

As described above, according to the segment of the present invention, the end portions of the segments having the above-mentioned structure are connected to each other by fitting the actual groove or the intaglio groove to the actual or intaglio groove. Therefore, it is not necessary to caulk the ends of each segment with rivets, and the number of steps can be reduced and cost can be reduced.

Further, since the edge portions of the segments are connected to each other by a so-called ingot joint, the cross-sectional area is reduced at the edge portions of the segments so that notches which cause stress concentration are eliminated, and the connection of the segments is prevented. The rigidity of the portion is increased, so that cracks are less likely to occur, and the durability is significantly increased.

According to the segmental saw of the present invention,
With the above configuration, since the ends of each segment are connected to each other by so-called actual joining or intaglio joining, there is no notch that causes stress concentration between the outer peripheral edge and the inner peripheral edge, so the rigidity is improved. Is significantly improved,
For this reason, this segmental saw is extremely excellent in rigidity and impact resistance, and also remarkably excellent in horizontal blur,
This has the effect of extremely improving the durability.

[0029]

[Brief description of the drawings]

FIG. 1 is a side view of a segment of the present invention.

FIG. 2 is a view taken in the direction of arrow A in FIG. 1;

FIG. 3 is a view taken in the direction of arrow B in FIG. 1;

FIG. 4 is a side view of the segmental hot saw of the present invention.

FIG. 5 is a side view of a conventional segmental hot saw.

FIG. 6 is a sectional view taken along line CC of FIG. 5;

[0030]

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Segment 2 Outer edge 3 Inner edge 4 Body plate 5 Ink groove for connection of a body plate and a segment 6 Ink groove for connection of adjacent segments 7 Ink groove for connection of adjacent segments

Claims (7)

(57) [Claims] (1)Fan-shaped segment fixed around the body plate
At Circumferentially concave at both ends in the circumferential direction, radially outside the body plate
And with adjacent segments in the thickness direction
Mating to control Real groove or Inro groove, or this
Real grooveOrFor Inro MinoruAnd project in the circumferential directionFruit or
A segment characterized by the fact that an Inro Minami is provided. 2. A segment in a circumferential direction thereof.
A groove or an intaglio groove is recessed at one end
The segment according to claim 1, wherein a corresponding fruit or a stamped fruit is protruded from an end portion . 3. In a segment, in a circumferential direction thereof,
At both edges, the actual groove or the intaglio groove and the corresponding groove
Or one of the following:
Segment described in. 4. A body plate and a plurality of body plates fixed around the body plate.
Edge of adjacent segment comprising a fan-shaped segment
The parts restrain each other outside the body plate in the thickness direction
Edges of a segmental saw connected in such a way that the outer edges of the
But the actual groove or the inro groove provided on one side
Then, fit the actual or the inro real provided on the other side
Are connected to each other so as to restrain each other in the thickness direction.
Segmental saw, characterized by being. 5. Each segment has one end in the circumferential direction.
It has a real groove or an intaglio groove at the edge, and a real groove at the other end.
Or, having an inro groove, the actual groove or inro groove of each segment
Segmental saw of claim 4 in which the actual or spigot real adjacent segments are fitted to. 6. A real groove or an intaglio groove is provided at both ends in the circumferential direction.
Segments having a pair of opposite circumferential edges
At least a segment having a fruit or an inro fruit
Provide one pair, the actual groove or the inro groove of this paired segment
And the real or the inro real by fitting
Are connected to each other so as to restrain each other in the thickness direction.
One of both ends of a pair of segments connected to each other
The actual groove or the inro groove is arranged on the other side, and the actual groove or the
The segmental saw according to claim 4, wherein an intaglio groove is arranged . 7. An apparatus according to claim 1, further comprising an even number of segments.
Half of the cases have a real groove or an ink groove at both ends in the circumferential direction.
And the other half are at the both ends in the circumferential direction.
Iha has an Inro Minami, and these two types of Segume
Are alternately arranged around the body plate, and the actual groove
Segment adjacent to the actual groove or inro groove of the segment having
Each segment is fitted by fitting the actual
The segmental saw according to claim 4 or 6 , wherein the segments are connected so as to restrain each other in a thickness direction .