JP2000033518A - High speed rotary saw for cutting steel product - Google Patents

High speed rotary saw for cutting steel product

Info

Publication number
JP2000033518A
JP2000033518A JP10219735A JP21973598A JP2000033518A JP 2000033518 A JP2000033518 A JP 2000033518A JP 10219735 A JP10219735 A JP 10219735A JP 21973598 A JP21973598 A JP 21973598A JP 2000033518 A JP2000033518 A JP 2000033518A
Authority
JP
Japan
Prior art keywords
blade
tip
blades
height
circumferential direction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP10219735A
Other languages
Japanese (ja)
Inventor
Seiichi Hasegawa
清一 長谷川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tenryu Saw Manufacturing Co Ltd
Original Assignee
Tenryu Saw Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tenryu Saw Manufacturing Co Ltd filed Critical Tenryu Saw Manufacturing Co Ltd
Priority to JP10219735A priority Critical patent/JP2000033518A/en
Publication of JP2000033518A publication Critical patent/JP2000033518A/en
Pending legal-status Critical Current

Links

Landscapes

  • Sawing (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a rotary saw capable of reducing cutting resistance and abnormal vibration and having the durability when a steel product is cut by a high speed rotation. SOLUTION: Many chips 4 protruding to the outside in the radial direction are provided in an outer peripheral part of a disclike base metal 2 at a predetermined pitch in the circumferential direction. 1/8 to 1/15 of the total number of chips 4 are formed as one set of assembled blades C and are sequentially arranged in the circumferential direction. The chips 4 of each assembled blade C form a blade shape when viewed on a cutting face into substantially the same blade shape, and a height H of a blade of the chip 4 in the assembled blade C is sequentially reduced toward the direction of rotation or the direction of anti-rotation of the base metal 2.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、外周に超硬チップ
を有する回転鋸を高速回転させて鋼板、鋼管等の鋼材を
切断する鋼材切断用高速回転鋸に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-speed rotary saw for cutting steel such as steel plates and steel pipes by rotating a rotary saw having a carbide tip on its outer periphery at a high speed.

【０００２】[0002]

【従来の技術】従来の技術として、３，０００ｒｐｍ〜
４，０００ｒｐｍで高速回転する回転軸に円板状の砥石
を取付け、この砥石により鋼板、鋼管等の鋼材を切断す
るものがあった。2. Description of the Related Art As a conventional technique, 3,000 rpm or more is used.
In some cases, a disk-shaped grindstone is attached to a rotating shaft that rotates at a high speed of 4,000 rpm, and a steel material such as a steel plate or a steel pipe is cut by the grindstone.

【０００３】[0003]

【発明が解決しようとする課題】砥石による切断は粉塵
が発生し、安全衛生上問題があった。これの対策として
外周にチップを有する切断用の回転鋸を使用する手段が
あるが、従来の回転鋸は、各チップの刃の高さが同じで
あったり、刃形の異なる高低刃、例えば、刃丈の低い平
刃チップと刃丈の高い台形刃チップとを交互に配列して
なるものであったため、これを高速回転させて鋼材を切
断すると、耐久性が乏しくなったり、異常振動が発生し
たりする欠点があった。本発明は、上記欠点を解消した
新規な鋼材切断用高速回転鋸を得ることを目的とする。The cutting with a grindstone generates dust, which has a problem in safety and health. As a countermeasure for this, there is a means of using a rotary saw for cutting having a chip on the outer periphery, but in the conventional rotary saw, the height of the blade of each chip is the same or the height of the blade is different, for example, Flat blade inserts with a low blade height and trapezoidal blade tips with a high blade height are alternately arranged.If these are rotated at high speed to cut steel, durability will be poor and abnormal vibration will occur. There were drawbacks. SUMMARY OF THE INVENTION An object of the present invention is to provide a novel high-speed rotary saw for cutting steel, which has solved the above-mentioned disadvantages.

【０００４】[0004]

【課題を解決するための手段】本発明は、上記目的を達
成するために以下の如く構成したものである。即ち、円
板状の台金の外周部に半径方向外方に突出するチップを
円周方向に所定ピッチで多数設けるとともに、該チップ
総数の１／８〜１／１５を１組みの組刃として円周方向
に順次配列し、各組刃のチップは、すくい面視の刃形を
それぞれ略同刃形にするとともに、該組刃内のチップの
刃の高さを台金の回転方向又は反回転方向に向かって順
次低くする構成にしたものである。この場合、前記各組
刃内の円周方向一端部のチップの刃の高さと円周方向他
端部のチップの刃の高さとの差を約０．２ｍｍ〜０．６
ｍｍにするとよい。また、前記各組刃のチップは、先端
逃げ角を１０度〜２５度にするとよい。Means for Solving the Problems The present invention is configured as follows to achieve the above object. That is, a large number of chips protruding radially outward are provided at a predetermined pitch in the circumferential direction on the outer peripheral portion of the disk-shaped base metal, and 1/8 to 1/15 of the total number of chips is used as one set of blades. The tips of each pair of blades are sequentially arranged in the circumferential direction, and each of the blades in the rake face has substantially the same blade shape as viewed from the rake face, and the height of the blades of the chips in the blades is adjusted in the rotation direction of the base metal or in the opposite direction. The configuration is such that it is gradually lowered in the rotation direction. In this case, the difference between the height of the tip blade at one end in the circumferential direction and the height of the tip blade at the other end in the circumferential direction in each of the blades is about 0.2 mm to 0.6 mm.
mm. Further, the tip of each of the blades may have a clearance angle of 10 to 25 degrees.

【０００５】[0005]

【発明の実施の形態】以下本発明の実施例を図面に基い
て説明する。図面において、図１本発明の実施例を示す
鋼材切断用高速回転鋸の側面図、図２は本発明による組
刃の刃の高さの状態を示す第１例の説明用要部側面図、
図３は本発明による組刃の刃の高さの状態を示す第２例
の説明用要部側面図である。Embodiments of the present invention will be described below with reference to the drawings. In the drawings, FIG. 1 is a side view of a high-speed rotary saw for cutting steel material showing an embodiment of the present invention, FIG.
FIG. 3 is a side view for explaining an essential part of a second example showing the state of the height of the blade of the blade set according to the present invention.

【０００６】図１において、１は３，０００ｒｐｍ〜
４，０００ｒｐｍで回転される回転軸（図示省略）に取
り付けられる鋼材切断用高速回転鋸である。この回転鋸
は、例えば、直径約３０５ｍｍの円板状の台金２の外周
に６０個の刃台３を円周方向に等ピッチあるいは不等ピ
ッチで形成し、各刃台３の回転面側にそれぞれサーメッ
トからなる超硬合金製のチップ４を銀ロウ等によりロウ
付け固着されてなる。In FIG. 1, 1 is 3,000 rpm or more.
This is a high-speed rotating saw for cutting steel materials attached to a rotating shaft (not shown) rotated at 4,000 rpm. In this rotary saw, for example, 60 blade bases 3 are formed on the outer periphery of a disk-shaped base metal 2 having a diameter of about 305 mm at equal pitches or uneven pitches in the circumferential direction. A chip 4 made of a cemented carbide made of cermet is brazed and fixed with silver brazing or the like.

【０００７】上記チップ４は、チップ総数の１／８〜１
／１５、本例ではチップ総数６０個の１／１０となる６
枚のチップ４1 〜４6 を１組みの組刃Ｃとして円周方向
に１０組の組刃Ｃ1 〜Ｃ10を順次配列してなる。なお、
これら各組刃Ｃ1 〜Ｃ10の刃数は異数、例えば５枚１組
と７枚１組とを混在させるようにしてもよい。上記各組
刃Ｃ1 〜Ｃ10のチップ４1 〜４6 は、すくい面視の刃形
をそれぞれ略同刃形にする。この刃形は、図４に示すよ
うに、先端切刃４ａを平坦にした平刃チップ４−１にし
てもよく、図５に示すように、先端切刃４ｂを半径方向
外方に向かって円弧状にした円弧刃チップ４−２にして
もよく、あるいは、図６に示すように、先端切刃４ｃを
先端傾き角θ2 が約１５度で半径方向外方に向かって逆
Ｖ状に屈曲する山形刃チップ４−３にしてもよい。な
お、上記円弧刃チップ４−２の先端切刃４ｂは、その両
側を刃厚中心に向かって半径方向外方への傾き角θ1 が
約１５度となるように傾斜させるとともに、該傾斜部の
幅Ｗ１は約０．５ｍｍとし、中間部は基部側の刃厚中心
点Ｐを中心とする半径Ｒが約３．５ｍｍとなる円弧にす
る。The chip 4 is 1/8 to 1 of the total number of chips.
/ 15, which in this example is 1/10 of the total number of chips 60, 6
Chips formed by sequentially arranging 10 pairs of the set blade C 1 -C 10 in the circumferential direction 41 to 6 as a set of pairs blade C. In addition,
The number of blades of each of the blades C 1 to C 10 may be different, for example, a pair of five blades and a pair of seven blades may be mixed. The chip 41 to 6 in each set blade C 1 -C 10, the blade-shaped rake face as viewed in substantially the same flute shape, respectively. This blade shape may be a flat blade tip 4-1 in which the tip cutting edge 4a is flattened as shown in FIG. 4, and the tip cutting edge 4b is directed radially outward as shown in FIG. The arc-shaped blade tip 4-2 may be formed in an arc shape, or, as shown in FIG. 6, the tip cutting edge 4c may be formed in the shape of an inverted V toward the outside in the radial direction at a tip inclination angle θ 2 of about 15 degrees. The angled blade tip 4-3 may be bent. Incidentally, the tip cutting edge 4b of the arc blade tip 4-2, with tilting so that the inclination angle theta 1 of radially outwardly toward the both sides HaAtsu center is about 15 degrees, the inclined portion Has a width W1 of about 0.5 mm, and the middle part is an arc having a radius R of about 3.5 mm centered on the blade thickness center point P on the base side.

【０００８】また、上記各組刃Ｃ1 〜Ｃ10内のチップ４
1 〜４6 の刃の高さＨは、図２に示すように、台金２の
回転側をなす前部チップ４1 から反回転側をなす後部チ
ップ４6 に向けて次第に低く（Ｓ1 〜Ｓ5 ）する。本例
では、最前部のチップ４1 の刃の高さと最後部のチップ
４6 の刃の高さとの差Ｓ6 を約０．２ｍｍ〜０．６ｍｍ
にする。このようにすれば、各組刃Ｃ1 Ｃ10の最前部
のチップ４1 ，４1 ，４1 ・・・が切断負荷を最も大き
く受け、後部側（４2 〜４6 ）に行くに従って切断負荷
が次第に少なくなるため、高速回転で鋼材を切断した際
に有効切断刃が少ないため、切削抵抗が少なくなるとと
もに、異常（不良）振動が抑制されることになる。ま
た、チップ４の摩耗が前部側から順次後部側に向かって
移動するため、耐久性に富むことになる。Further, the insert 4 in each of the above-mentioned blades C 1 to C 10 is provided.
1-4 6 height H of the blade, as shown in FIG. 2, gradually lower toward the rear chip 4 6 from the front tip 4 1 forming the rotating side of the base metal 2 forms a counter-rotating side (S 1 ~S 5) to. In this example, about the difference S 6 between the height of the blade tip 4 6 height and final portion of the chip 4 1 of blade foremost 0.2mm~0.6mm
To In this way, the chip 4 1 the foremost portion of each set blade C 1 C 10, 4 1, 4 1 · · · receives the largest cut load, cut toward the rear side (4 2-4 6) Since the load is gradually reduced, the number of effective cutting blades when cutting steel at high speed is small, so that cutting resistance is reduced and abnormal (defective) vibration is suppressed. Further, since the wear of the tip 4 moves sequentially from the front side toward the rear side, the durability is enhanced.

【０００９】また、上記各組刃Ｃ1 〜Ｃ10のチップ４1
〜４6 の先端逃げ角αは、１０度〜２５度の範囲とし、
本例では約１８度とする。この１０度〜２５度の先端逃
げ角は、通常の１，５００ｒｐｍ程度で回転される回転
鋸のチップの先端逃げ角、約７度に対して大きいものと
なっている。このようにすれば、前部側のチップ４（４
1 ）の先端切刃４ａ（４ｂ，４ｃ）が摩耗した際に、こ
の部の被切断物との接触面積が少なくなり、該摩耗によ
る切削抵抗の増大が低減することになるので好ましい。[0009] The chip 4 1 above each set edge C 1 -C 10
~ 4 6 tip relief angle α of, in the range of 10 to 25 degrees,
In this example, the angle is about 18 degrees. The tip clearance angle of 10 to 25 degrees is larger than the tip clearance angle of the tip of the rotary saw, which is rotated at about 1,500 rpm, which is about 7 degrees. In this manner, the front chip 4 (4
When the tip cutting edge 4a (4b, 4c) of 1 ) is worn, the contact area of this portion with the object to be cut is reduced, and the increase in cutting resistance due to the wear is preferably reduced.

【００１０】図３は第２の実施例を示す。このものは、
前述した各組刃Ｃ1 〜Ｃ10内に、刃の高さＨが台金２の
回転側をなす前部から反回転側をなす後部に向けて次第
に高くなるチップ５（５1 〜５6 ）を設けたものであ
る。即ち、各組刃Ｃ1 〜Ｃ10内の最前部のチップ５1 の
刃の高さＨを最も低くし、該チップ５1 から最後部のチ
ップ５6 に向かって次第に高く（Ｓ1 〜Ｓ5 ）するとと
もに、最前部のチップ５1 の刃の高さと最後部のチップ
５6 の刃の高さとの差Ｓ6 を約０．２ｍｍ〜０．６ｍｍ
にする。その他は前述した第１実施例と同様の構造とす
る。FIG. 3 shows a second embodiment. This one is
Each set blade C 1 -C 10 described above, the height H of the blade is increased gradually toward the rear forming an anti-rotation side from the front which forms the rotating side of the base metal 2 chip 5 (5 1 to 5 6 ). That is, the lowest height H of the chip 5 1 of blade front of the each set blade C 1 -C 10, gradually increases towards the tip 5 6 the rearmost from the chip 5 1 (S 1 to S 5) as well as about the difference S 6 between the height of the blade tip 5 6 height and final portion of the chip 5 1 of blade foremost 0.2mm~0.6mm
To Otherwise, the structure is the same as that of the first embodiment.

【００１１】このようにすれば、各組刃Ｃ1 Ｃ10内の
チップ５は最後部のチップ５6 ，５6 ，５6 ・・・が切
断負荷を最も大きく受け、前部側（５5 〜５2 ）に行く
に従って切断負荷が次第に少なくなり、前述した第１実
施例と同様に、高速回転で鋼材を切断した際に切削抵抗
が少なくなるとともに、異常振動が抑制されることにな
る。また、チップ５の摩耗が後部側から順次前部側に向
かって移動するため、耐久性に富むことになる。[0011] In this way, the chip 5 in each set cutter C 1 C 10 receives the largest tip 5 6, 5 6, 5 6 ... cutting load rearmost, front side (5 5 cutting load is gradually reduced toward the 5 2), similarly to the first embodiment described above, with the cutting force when cutting the steel is reduced in high speed rotation, so that abnormal vibration can be suppressed. In addition, since the wear of the tip 5 moves sequentially from the rear side toward the front side, the durability is enhanced.

【００１２】[0012]

【発明の効果】以上の説明から明らかな如く、本発明
は、台金に設けるチップ総数の１／８〜１／１５のチッ
プを１組みの組刃として円周方向に順次配列し、各組刃
のチップを略同刃形にするとともに、各組刃内のチップ
の刃の高さを台金の回転方向又は反回転方向に向かって
順次低くしたので、高速回転で鋼材を切断した際に有効
切断刃が少なくなり、切削抵抗が少なくなるとともに、
異常振動が抑制されることになる。また、各組刃内のチ
ップの磨耗が台金の円周方向一端側から他端側に向かっ
て移動するため、耐久性に富むことになる。また、各組
刃のチップの先端逃げ角を大きくしたので、刃丈の高い
チップの先端切刃が摩耗した際における切削抵抗の増大
が低減することになる。As is apparent from the above description, according to the present invention, １ ／ to 1/15 of the total number of chips provided on the base metal are sequentially arranged in the circumferential direction as one set of blades. Since the tip of the blade is made substantially the same shape, and the height of the blade of the tip in each set blade is gradually reduced in the rotation direction or the counter rotation direction of the base metal, when cutting steel material at high speed rotation Effective cutting blades are reduced, cutting resistance is reduced,
The abnormal vibration is suppressed. Further, wear of the chips in each of the blades moves from one end in the circumferential direction of the base metal toward the other end, so that the durability is enhanced. In addition, since the tip clearance angle of the tip of each pair of blades is increased, an increase in cutting resistance when the tip cutting edge of the tip having a high blade height is worn is reduced.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の実施例を示す鋼材切断用高速回転鋸の
側面図である。FIG. 1 is a side view of a high-speed rotary saw for cutting steel material according to an embodiment of the present invention.

【図２】本発明の第１実施例による組刃の刃の高さの状
態を示す説明用要部側面図である。FIG. 2 is a side view of the main part for explanation showing the state of the height of the blade of the paired blade according to the first embodiment of the present invention.

【図３】本発明の第２実施例による組刃の刃の高さの状
態を示す説明用要部側面図である。FIG. 3 is a side view of a main part for explanation showing a state of a height of a blade of a blade set according to a second embodiment of the present invention.

【図４】本発明に適用される平刃チップの正面図であ
る。FIG. 4 is a front view of a flat blade tip applied to the present invention.

【図５】本発明に適用される円弧刃チップの正面図であ
る。FIG. 5 is a front view of the arc blade tip applied to the present invention.

【図６】本発明に適用される山形刃チップの正面図であ
る。FIG. 6 is a front view of a chevron blade tip applied to the present invention.

【符号の説明】[Explanation of symbols]

１ 鋼材切断用高速回転鋸 ２ 台金 ３ 刃台 Ｃ（Ｃ1 〜Ｃ10）） 組刃 ４（４1 〜４6 ） チップ ４ａ，４ｂ，４ｃ 先端切刃 α 先端逃げ角 ５（５1 〜５6 ） チップ1 steel cutting speed rotation saw 2 the base metal 3 blade base C (C 1 -C 10)) Kumiha 4 (4 1 to 4 6) chips 4a, 4b, 4c tip cutting edge α tip relief angle 5 (5 1 to 56 ) Chip

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】円板状の台金（２）の外周部に半径方向外
方に突出するチップ（４）を円周方向に所定ピッチで多
数設けるとともに、該チップ（４）総数の１／８〜１／
１５を１組みの組刃（Ｃ）として円周方向に順次配列
し、各組刃（Ｃ）のチップ（４）は、すくい面視の刃形
をそれぞれ略同刃形にするとともに、該組刃（Ｃ）内の
チップ（４）の刃の高さ（Ｈ）を台金（２）の回転方向
又は反回転方向に向かって順次低くしたことを特徴とす
る鋼材切断用高速回転鋸。1. A plurality of chips (4) projecting radially outward at a predetermined pitch on the outer periphery of a disk-shaped base (2) at a predetermined pitch in the circumferential direction, and 1 / (1) of the total number of the chips (4). 8 to 1 /
15 are sequentially arranged in the circumferential direction as one set of blades (C), and the tips (4) of the respective blades (C) have substantially the same blade shape as viewed from the rake face. A high-speed rotary saw for cutting steel material, wherein the height (H) of the blade of the tip (4) in the blade (C) is gradually reduced in the rotation direction or the anti-rotation direction of the base metal (2). 【請求項２】前記各組刃（Ｃ）内の円周方向一端部のチ
ップ（４1 ) の刃の高さと円周方向他端部のチップ（４
6 ）の刃の高さとの差（Ｓ6 ）を約０．２ｍｍ〜０．６
ｍｍとしたことを特徴とする請求項１記載の鋼材切断用
高速回転鋸。2. The height of the blade of the tip (4 1 ) at one end in the circumferential direction and the tip (4) at the other end in the circumferential direction in each of the blades (C).
6 ) The difference (S 6 ) from the blade height is about 0.2 mm to 0.6 mm.
2. The high-speed rotary saw for cutting steel material according to claim 1, wherein 【請求項３】前記各組刃（Ｃ）のチップ（４）は、先端
逃げ角（α）を１０度〜２５度としたことを特徴とする
請求項１又は２記載の鋼材切断用高速回転鋸。3. The high-speed rotating steel cutting machine according to claim 1, wherein the tip (4) of each of the blades (C) has a clearance angle (α) of 10 ° to 25 °. saw.
JP10219735A 1998-07-17 1998-07-17 High speed rotary saw for cutting steel product Pending JP2000033518A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10219735A JP2000033518A (en) 1998-07-17 1998-07-17 High speed rotary saw for cutting steel product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10219735A JP2000033518A (en) 1998-07-17 1998-07-17 High speed rotary saw for cutting steel product

Publications (1)

Publication Number Publication Date
JP2000033518A true JP2000033518A (en) 2000-02-02

Family

ID=16740173

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10219735A Pending JP2000033518A (en) 1998-07-17 1998-07-17 High speed rotary saw for cutting steel product

Country Status (1)

Country Link
JP (1) JP2000033518A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010131625A1 (en) * 2009-05-12 2010-11-18 株式会社 アマダ Band saw blade

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010131625A1 (en) * 2009-05-12 2010-11-18 株式会社 アマダ Band saw blade
JP2010284793A (en) * 2009-05-12 2010-12-24 Amada Co Ltd Band saw blade
CN102421559A (en) * 2009-05-12 2012-04-18 株式会社天田 Band saw blade

Similar Documents

Publication Publication Date Title
JPH04294915A (en) Cutting insert and drill tool
GB2167983A (en) Annular hole cutter
JP2001018174A (en) Rotary grinding wheel
US5647264A (en) Indexable cut-off saw
JPH0715686Y2 (en) Ball end mill
JP3212951B2 (en) Split cutting tip saw
JP2000033518A (en) High speed rotary saw for cutting steel product
JP2004276142A (en) End mill
JP5327997B2 (en) Drum type cutter unit
JPH0319004B2 (en)
JPH0335081B2 (en)
JP2010248871A5 (en)
JPH0679801B2 (en) Rotating saw blade
JP3092359U (en) Diamond blade
JP2540470Y2 (en) Rotary saw for metal cutting
JP3727909B2 (en) Annular cutter
JP3754920B2 (en) Throwaway end mill
JPH0538606A (en) Cutter device for hole machining
JPS6320493Y2 (en)
JP2005124407A (en) Chip saw for mowing
JPH06335814A (en) End mill
JP2567787Y2 (en) Throw-away tips
JP2009196046A (en) Disk rotary cutter
JPH08309702A (en) Structure of blade of round saw
JP2000025006A (en) Circular saw

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20050407

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20071112

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20071204

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20080401