JP2616924B2 - Saw blade - Google Patents
Saw bladeInfo
- Publication number
- JP2616924B2 JP2616924B2 JP62164084A JP16408487A JP2616924B2 JP 2616924 B2 JP2616924 B2 JP 2616924B2 JP 62164084 A JP62164084 A JP 62164084A JP 16408487 A JP16408487 A JP 16408487A JP 2616924 B2 JP2616924 B2 JP 2616924B2
- Authority
- JP
- Japan
- Prior art keywords
- tooth
- teeth
- saw blade
- cutting
- straight
- 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.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
- B23D61/12—Straight saw blades; Strap saw blades
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sawing (AREA)
Description
【発明の詳細な説明】 ［発明の目的］ （産業上の利用分野） 本発明は鋸刃に係り、さらに詳細には、例えば帯鋸、
丸鋸あるいはハクソーのごとき鋸刃に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a saw blade, and more specifically, for example, a band saw,
Related to saw blades such as circular saws or hacksaws.
（従来の技術） 従来、例えば金属性の大きなワークピースを切断（切
削）する装置として、帯鋸盤が使用されている。帯鋸盤
に使用される帯鋸刃においては、アサリパターンをレー
カーセット、ウェーブセット、あるいはストレートセッ
ト等、種々のパターンに設定したり、また、各歯のピッ
チを不等ピッチとしたり、歯高に高低差をつけた鋸刃が
知られている。更に、ガレットの歯底曲線に大小をつけ
たり、歯底曲線を単数あるいは複数とした鋸刃も知られ
ている。2. Description of the Related Art Conventionally, a band saw machine has been used as an apparatus for cutting (cutting) a large metal workpiece, for example. In the band saw blade used for the band sawing machine, the set pattern is set to various patterns such as a laker set, a wave set, or a straight set, the pitch of each tooth is set to an unequal pitch, and Differentiated saw blades are known. Further, there is known a saw blade in which the root curve of a gullet is given a magnitude or a root curve is singular or plural.
しかし、これ等の鋸刃のすくい面とガレットを曲線で
つないでいるガレット形状において、切削時の切屑の流
れは、切屑の巻き中心が歯先に近い部位で発生する。こ
の結果、構成歯先が付着しやすい被削材では、構成歯先
の脱落するときに歯先も同時に脱落して、歯先の微小欠
けを起こす。However, in a gullet shape in which the rake face of these saw blades and the gullet are connected by a curve, the flow of chips during cutting occurs at a position where the center of the chip winding is close to the tooth tip. As a result, in a work material to which the constituent tooth tips are likely to adhere, when the constituent tooth tips fall off, the tooth tips also fall off at the same time, causing minute chipping of the tooth tips.
また、帯鋸盤に備えられた現状のワイヤブラシによる
切粉除去方法では、ワイヤブラシを鋸刃に対し直角にセ
ットした場合、すくい角によりすくい面の一部を十分除
去できないという不具合が発生する。このため、すくい
面全体の切粉除去をするためワイヤブラシをすくい面に
直角的にセットした場合は、ワイヤブラシが片摩耗とな
り、ワイヤブラシの交換時期を間違えると鋸刃が目づま
りを起こし歯欠けが発生する。Further, in the current method of removing chips using a wire brush provided in a band sawing machine, when the wire brush is set at a right angle to the saw blade, a problem occurs that a part of the rake face cannot be sufficiently removed due to the rake angle. For this reason, if the wire brush is set perpendicular to the rake face to remove chips from the entire rake face, the wire brush will have one-sided wear, and if the wire brush is replaced incorrectly, the saw blade will be clogged and chipped. Occurs.
（発明が解決しようとする問題点） 上記の如く、切屑の巻き中心が歯先の近い部位で起こ
り、更にワイヤブラシでの切粉の除去が十分行なわれな
いため、切粉による切削抵抗が大きくなり、歯に加わる
抵抗が大きくなって切削性能を十分に発揮できない。こ
の結果、切削時のびびり振動による切断面精度の低下
や、早期刃欠けや、騒音による周囲環境へ悪影響を及ぼ
すという問題点がある。(Problems to be Solved by the Invention) As described above, since the winding center of the chip occurs at a portion near the tooth tip, and furthermore, the chip is not sufficiently removed by the wire brush, so that the cutting resistance due to the chip is large. As a result, the resistance applied to the teeth increases, and the cutting performance cannot be sufficiently exhibited. As a result, there is a problem that the cutting surface accuracy is reduced due to chatter vibration during cutting, the blade is chipped at an early stage, and the surrounding environment is adversely affected by noise.
本発明は、上記のごとき従来の問題に鑑みて創案した
もので、切屑（切粉）の巻き中心を刃先から遠くへ離す
ように歯のすくい面を形成することにより、切削抵抗を
低減し、切削除去を円滑にし、早期刃欠けを抑え、切削
面精度と切削性能の向上と、びびり振動、騒音を抑止し
た鋸刃を提供するものである。The present invention has been made in view of the conventional problems as described above, and reduces cutting resistance by forming a rake face of a tooth so that a winding center of chips (cutting chips) is far away from a cutting edge, An object of the present invention is to provide a saw blade that facilitates cutting removal, suppresses early chipping, improves cutting surface accuracy and cutting performance, and suppresses chatter vibration and noise.
［発明の構成］ （問題点を解決するための手段） 前述のごとき従来の問題に鑑みて、本発明は、鋸刃の
刃先端におけるすくい面のすくい角を正のすくい角に設
け、上記刃先端から僅かに離れた位置に負のすくい角を
なすすくい面を不連続的に接続して設け、この負のすく
い角のすくい面に円滑に接続して円弧状のガレットを形
成してなるものである。[Constitution of the Invention] (Means for Solving the Problems) In view of the above-mentioned conventional problems, the present invention provides a rake angle of a rake face at a blade tip of a saw blade at a positive rake angle, A rake face forming a negative rake angle is provided discontinuously at a position slightly away from the tip, and is smoothly connected to the rake face having the negative rake angle to form an arc-shaped gullet. It is.
（実施例） 以下、本発明の一実施例を図面に基づいて詳細に説明
するに、実施例は帯鋸刃の場合について例示するけれど
も、本発明は帯鋸刃に限ることなく、丸鋸刃あるいはハ
クソーなど種々の鋸刃にも実施可能である。(Embodiment) Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. Although the embodiment illustrates a case of a band saw blade, the present invention is not limited to a band saw blade, but a circular saw blade or a hacksaw. For example, the present invention can be applied to various saw blades.
第１図において、実線で示す歯形は本発明の実施例を
示し、二点鎖線にて示す歯形は従来のものを表わす。In FIG. 1, a tooth profile shown by a solid line shows an embodiment of the present invention, and a tooth profile shown by a two-dot chain line shows a conventional one.
第１図より明らかなように、鋸刃１の刃先端３（Ａ
点）におけるすくい面は正のすくい角に設けてあり、上
記刃先端３から僅かに下ったすくい面Ｂ点から、鋸刃１
の脊への垂下点Ｃ点と、負の掬い角をなすためのＤ点と
により形成された角CBDなる負の角度θ１を設け、Ｂ、
Ｄ点のなす直線上のＥ点と歯底Ｆ点とを曲線R1で円滑に
結ぶ。更に、歯底Ｆ点からＧ点迄を直線で結ぶ歯底を形
成し、Ｇ点とＨ点間を曲線R2で結び、Ｈ点と次の歯のＡ
点とを直線で結んでガレットを形成した。なお、Ａ点と
Ｂ点の直線部と、Ｂ点とＥ点の直線の交点は微小曲線R3
もしくは点で不連続的に接続してある。As is clear from FIG. 1, the blade tip 3 of the saw blade 1 (A
The rake face at (point) is provided at a positive rake angle.
A negative angle θ 1 , which is an angle CBD formed by a point C at which the spine hangs on the spine and a point D which forms a negative scooping angle,
The point E and the tooth bottom point F on the line formed at the point D in the curve R 1 smoothly connecting. Furthermore, to form a tooth bottom connecting by a straight line up to point G from the tooth bottom point F, tied between point G and point H in the curve R 2, point H and A of the next tooth
The point was connected with a straight line to form a galette. The intersection of the straight line between point A and point B and the straight line between point B and point E is a small curve R 3
Or they are connected discontinuously at points.
上記構成より明らかなように、刃先端３における正の
掬の角の掬い面と掬い角が負の掬い面とはＢ点において
不連続的に接続してあり、負の掬い角の掬い面と円弧状
の曲線R2はＥ点において円滑に接続してある。As is clear from the above configuration, the scooping surface of the positive scooping angle and the scooping angle of the negative scooping angle at the blade tip 3 are discontinuously connected at the point B, and the scooping surface of the negative scooping angle is arc-shaped curve R 2 are are smoothly connected at point E.
上記のごとき構成により、切屑の巻き中心である曲線
R1の中心Ｋ点が従来例（二点鎖線で示す）におけるガレ
ット円弧部の中心Ｌ点に比較して歯先Ａ点より離れた位
置にあるため、切削時の切屑（切粉）の巻き中心が離れ
ることによりすくい面（Ｂ点とＥ点を結ぶ直線部）に切
粉が接触する接触長さが短かくなり切削抵抗を減少させ
るとともに、歯先への負担も低減させることができる。
また、歯厚については、本実施例の歯厚Ｍは従来例の歯
厚Ｎより広くなり、歯の質量増加、強度の増加により、
びびり振動、騒音を抑制することができ、刃欠けの減少
により切断性能、切断面精度も向上することができる。With the above configuration, the curve that is the center of the chip winding
Since the center K point of R 1 is located farther from the point A of the tooth tip than the center L point of the arcuate gullet in the conventional example (indicated by a two-dot chain line), the winding of chips (chips) during cutting. When the center is separated, the contact length of the chip contacting the rake face (the straight line part connecting point B and point E) is shortened, cutting resistance is reduced, and load on the tooth tip can be reduced.
Further, regarding the tooth thickness, the tooth thickness M of the present embodiment is wider than the tooth thickness N of the conventional example, and the increase in the mass and strength of the teeth results in
Chatter vibration and noise can be suppressed, and cutting performance and cutting surface accuracy can be improved due to reduction of chipping.
更に、すくい面は途中からすくい角を小さくして直線
化したことにより、ワイヤブラシでの切屑除去が円滑に
でき、ワイヤブラシの片摩耗等も無くすことができる。Furthermore, since the rake face is straightened by reducing the rake angle from the middle, chips can be removed smoothly with the wire brush, and one-sided wear of the wire brush can be eliminated.
次に、上記形状のガレット形状を備えた鋸刃を採用し
た実施例について、代表的な鋸刃を第２図乃至第５図に
て説明する。Next, an embodiment employing a saw blade having the above-described gullet shape will be described with reference to FIGS.
第２図（ａ）〜第２図（ｂ）を参照するに、概念的に
図示された鋸刃１は基本的には、ワークピースの切削を
行なうときに、ワークピースに対する切込み方向（図示
矢印Ａ方向）に先行してワークピースの切削を行なう右
方向への屈曲を行なった右あさり歯3R、左方向の屈曲を
行なった左あさり歯5L、および左右方向への屈曲を行な
わない直歯7Sとの計３歯を１グループ（セット）として
各歯のピッチを均等として構成した等ピッチ鋸刃であ
る。Referring to FIGS. 2 (a) and 2 (b), the saw blade 1 conceptually shown basically has a cutting direction (arrow shown in the drawing) with respect to the workpiece when cutting the workpiece. A direction), the right set teeth 3R bent to the right to cut the workpiece prior to cutting the workpiece, the left set teeth 5L bent to the left, and straight teeth 7S not bent to the left and right. Are equal pitch saw blades in which the total pitch of each tooth is equalized by forming a total of three teeth as one group (set).
上記鋸刃１において、各歯3R、5L、7SのピッチＰは均
等にして、各歯3R、5L、7Sの歯底に設けたガレット幅3
W、5W、7Wを等しくし、基準線Ｆより各歯3R、5L、7Sの
ガレット深さ迄の距離、つまり歯高を異にしたものであ
る。In the saw blade 1, the pitch P of each tooth 3R, 5L, 7S is made equal, and the gullet width 3 provided at the bottom of each tooth 3R, 5L, 7S is set.
W, 5W, 7W are made equal, and the distance from the reference line F to the depth of the gullet of each tooth 3R, 5L, 7S, that is, the tooth height is made different.
更に詳細に説明すると、直歯7Sの前側のガレット部の
深さを7Ha、7Hb、7Hcの如く、変化させ、換言すれば直
歯7Sの歯高を段階的に変え、7Haより7Hbは高く、7Hbよ
り7Hcの歯高を高く設けてある。また、右あさり歯3Rと
左あさり歯5Lの歯高3H、5Hは直歯7Sの歯高7Haと同一高
さとしてある。なお、本実施例は歯高を変化させた鋸刃
であるが、ガレット幅を変化させても良く、また、歯高
とガレット幅を共に変化させた鋸刃でも良いことは勿論
である。To explain in more detail, the depth of the front side gullet portion of the straight tooth 7S is changed like 7Ha, 7Hb, 7Hc, in other words, the tooth height of the straight tooth 7S is changed stepwise, 7Hb is higher than 7Ha, The tooth height of 7Hc is set higher than 7Hb. The tooth heights 3H and 5H of the right set teeth 3R and the left set teeth 5L are the same as the tooth height 7Ha of the straight teeth 7S. In this embodiment, the saw blade has a different tooth height. However, the saw blade may have a different gullet width, or may have both a tooth height and a gullet width.
第３図（ａ）〜第３図（ｃ）を参照するに、概念的に
図示するけれども、鋸刃１は、基本的には、第１図に示
した形状の歯を備えるもので、ワークピースＷの切削を
行なうときに、ワークピースＷに対する切込み方向（図
示の矢印Ａ方向）に先行してワークピースＷの切削を行
なう先行歯３と、先行歯３よりも遅れてワークピースに
切込みを行なう複数の後続歯５、７を１つのグループ
（セット）として備えている。上記先行歯３は例えば鋸
刃１の幅の中心（丸鋸刃の場合には、円の中心）を基準
位置Ｆとした場合、この基準位置Ｆから歯先部3Pまでの
歯高寸法3Hを、複数の後続歯５、７における基準位置Ｆ
から各歯先部5P、7Pまでの歯高寸法5H、7Hより大きく形
成してある。上記後続歯５、７の各歯高寸法5H、7Hは相
違しており、適宜一方の歯高寸法5Hを他方の歯高寸法7H
よりも大きく形成してある。すなわち、先行歯３および
複数の後続歯５、７は、第３図（ｂ）より明らかなよう
に、ワークピースＷに対する切込み方向に段差が形成さ
れている。Referring to FIGS. 3 (a) to 3 (c), although schematically shown, the saw blade 1 basically has teeth having the shape shown in FIG. When cutting the workpiece W, the leading teeth 3 for cutting the workpiece W prior to the cutting direction (the direction of the arrow A in the drawing) with respect to the workpiece W, and the cutting for the workpiece with a delay behind the leading teeth 3. A plurality of subsequent teeth 5, 7 to be performed are provided as one group (set). For example, when the center of the width of the saw blade 1 (the center of a circle in the case of a circular saw blade) is set as the reference position F, the leading tooth 3 has a tooth height dimension 3H from the reference position F to the tip 3P. , The reference position F in the plurality of subsequent teeth 5, 7
From the tooth heights 5H, 7H to the respective tooth tips 5P, 7P. The tooth heights 5H and 7H of the following teeth 5 and 7 are different, and one tooth height 5H is appropriately changed to the other tooth height 7H.
It is formed larger than. That is, the leading tooth 3 and the plurality of trailing teeth 5 and 7 are formed with a step in the cutting direction with respect to the workpiece W, as is clear from FIG.
第３図（ｂ）より明らかなように、前記先行歯３は、
ワークピースＷの切削方向（図示の矢印Ｂ方向）に対向
して見た場合、鋸刃１の厚み方向（以後、左右方向と称
す）に屈曲することのない直歯に形成されており、後続
歯５、７はそれぞれ左右方向に屈曲してあさり出しを行
なわれた右あさり歯および左あさり歯に形成してある。As is clear from FIG. 3 (b), the preceding tooth 3
When viewed facing the cutting direction of the workpiece W (the direction of arrow B in the drawing), the saw blade 1 is formed with straight teeth that do not bend in the thickness direction of the saw blade 1 (hereinafter referred to as the left-right direction). The teeth 5 and 7 are formed as right and left set teeth, respectively, which are bent in the left and right direction and set out.
以上のごとき構成の鋸刃１によりワークピースＷの切
断（切削）を行なうとき、歯高寸法3Hが最も大きな先行
歯３がワークピースＷに最初に切込み次に、歯高寸法5H
が次に大きな後続歯５が、さらに、続いて後続歯７がワ
ークピースＷに切込むこととなる。すなわち歯高寸法の
大きい歯からワークピースＷに切込みを行なうものであ
る。When cutting (cutting) the workpiece W by the saw blade 1 having the above configuration, the leading tooth 3 having the largest tooth height 3H is cut into the workpiece W first, and then the tooth height 5H is cut.
The next largest tooth 5 is cut into the workpiece W, and then the subsequent tooth 7 is cut into the workpiece W. That is, the workpiece W is cut from a tooth having a large tooth height.
前記先行歯３は左右のあさり出しを行なっていない直
歯であるから、先行歯３がワークピースＷに切込むと
き、左右方向への分力を受けることがなく、直進的にワ
ークピースＷに切込む。次に、後続歯５がワークピース
Ｗに切込むとき、後続歯５は右あさり歯であるから、先
行歯３によって切削された先行切削溝を拡げるように切
削するものであって、左方向に逃げる傾向にある。しか
もあさり歯であるために、第３図（ｃ）に示されるよう
に、左右方向に対し僅かに後方向の側逃角θが形成さ
れ、分力が作用するので、左右方向の振動を誘起する傾
向にある。同様に、後続歯７がワークピースＷに切込む
ときにも左右方向の振動を誘起する傾向にある。しかし
後続歯５、７がワークピースＷに切込むときには、先行
歯３は歯先部3Pが切削した先行切削溝によって常に直進
的に案内されているので、後続歯５、７による左右方向
への振動が抑制されることとなる。したがって、従来よ
りも直進性が良く、切曲りの少ない切断を行ない得るこ
ととなる。Since the leading teeth 3 are straight teeth that do not straighten in the left and right directions, when the leading teeth 3 cut into the workpiece W, they do not receive a component force in the left-right direction and move straight to the workpiece W. Cut in. Next, when the trailing tooth 5 cuts into the workpiece W, since the trailing tooth 5 is a right set tooth, the trailing tooth 5 is cut so as to expand the leading cutting groove cut by the leading tooth 3, and is moved to the left. They tend to run away. In addition, because of the set teeth, as shown in FIG. 3 (c), a slight side relief angle θ is formed in the rearward direction with respect to the left and right direction, and a component force acts, so that vibration in the left and right direction is induced. Tend to. Similarly, when the trailing teeth 7 cut into the workpiece W, there is a tendency to induce lateral vibration. However, when the trailing teeth 5 and 7 cut into the work piece W, the leading teeth 3 are always guided straight ahead by the leading cutting grooves cut by the tip 3P, so that the leading teeth 3 are moved in the left-right direction by the trailing teeth 5 and 7. Vibration is suppressed. Therefore, it is possible to perform cutting with better straightness than before and with less bending.
第４図（ａ）〜第４図（ｃ）を参照するに、概念的に
示すが、鋸刃１は第１図に示した形状の歯を備えるもの
で先行歯３と第１段階の先行溝拡開切削を行なう第１後
続歯である右あさり歯7R、左あさり歯の9Lおよび第２段
階の先行溝拡開切削を行なう第２後続歯である左あさり
歯5L、右あさり歯11Rの５歯を１つのグループ（セッ
ト）として備えている。Referring to FIGS. 4 (a) to 4 (c), conceptually, the saw blade 1 has teeth having the shape shown in FIG. The first trailing right tooth 7R, the left trailing tooth 9L, and the second trailing left trailing tooth 5L, the right trailing tooth 11R, which perform the second-stage leading groove widening cutting, are the first trailing tooth 7R for performing groove widening cutting. Five teeth are provided as one group (set).
上記先行歯３は例えば鋸刃１の幅の中心を基準位置Ｆ
とした場合、この基準位置Ｆから歯先部3Pまでの歯高寸
法3Hを第２後続歯5L、11Rにおける基準位置Ｆから各歯
先部5P、11Pまでの歯高寸法5H、11Hより大きく形成して
ある。また、第１後続歯7R、9Lの基準位置Ｆから各歯先
部7P、9Pまでの歯先寸法7H、9Hは、先行歯３と同じ高さ
に形成してある。なお、歯高寸法7H、9Hは先行歯３の歯
高寸法3Hより低くしてもよい。The leading tooth 3 is, for example, positioned at the center of the width of the saw blade 1 as a reference position F.
In this case, the tooth height 3H from the reference position F to the tooth tip 3P is formed larger than the tooth height 5H, 11H from the reference position F to the tooth tips 5P, 11P in the second subsequent teeth 5L, 11R. I have. The tip dimensions 7H, 9H from the reference position F of the first trailing teeth 7R, 9L to the tips 7P, 9P are formed at the same height as the leading teeth 3. The tooth heights 7H, 9H may be lower than the tooth height 3H of the leading tooth 3.
すなわち、先行歯３および第１後続歯7R、9Lまた第２
後続歯5L、11Rは、第４図（ｂ）より明らかなように、
ワークピースＷに対する切込み方向に段差が形成されて
いる。That is, the leading tooth 3 and the first trailing teeth 7R, 9L and the second
The trailing teeth 5L and 11R are, as is clear from FIG.
A step is formed in the cutting direction with respect to the workpiece W.
また、第４図（ｂ）より明らかなように、先行歯３
は、ワークピースＷの切削方向（図示の矢印Ｂ方向）に
対向して見た場合、鋸刃１の厚み方向（以後左右方向と
称す）に屈曲することのない直歯に形成されており、第
１後続歯7R、9Lそれぞれごく僅かに左右方向に屈曲して
あさり出しを行なった右あさり歯および左あさり歯に形
成してある。第２後続歯5L、11Rは、それぞれ大きく左
右方向に屈曲してあさり出しを行なった左あさり歯およ
び右あさり歯に形成してある。In addition, as is clear from FIG.
Are formed as straight teeth that do not bend in the thickness direction of the saw blade 1 (hereinafter referred to as the left-right direction) when viewed in the cutting direction of the workpiece W (the direction of arrow B in the drawing), The first trailing teeth 7R, 9L are formed in right and left set teeth, respectively, which are slightly bent in the left-right direction and set out. The second trailing teeth 5L and 11R are formed as left and right set teeth which are bent largely in the left-right direction and set out.
上記鋸刃１においては、第２後続歯5L、11Rの歯高寸
法を最も小さく設けてあり、かつ第４図（ａ）から明ら
かなように、互いに連続しないように配置してあるか
ら、第２後続歯5L、11Rに続く歯高寸法の大きい歯であ
る第１後続歯7R、先行歯３の負荷を低減するのである。In the saw blade 1, the second trailing teeth 5L, 11R are provided with the smallest tooth height dimension and are arranged so as not to be continuous with each other as is clear from FIG. 4 (a). This reduces the load on the first trailing tooth 7R and the leading tooth 3 which are the teeth having the larger tooth height following the second trailing teeth 5L and 11R.
第５図（ａ）〜（ｄ）に示す鋸刃１は概念的に示すけ
れども、第１図に示した形状の歯を備えるもので、右あ
さり歯3R、7R、13Rと、左方向への屈曲を行なったあさ
り歯5L、11L、15Lおよび左右方向への屈曲を行なわない
直歯9S、17Sとの計８歯を１グループ（セット）として
構成してある。Although the saw blade 1 shown in FIGS. 5 (a) to 5 (d) is conceptually shown, it has teeth having the shape shown in FIG. 1, and includes right set teeth 3R, 7R, 13R and leftward. A total of eight teeth including bent set teeth 5L, 11L, 15L and straight teeth 9S, 17S not bent in the left-right direction are configured as one group (set).
各歯の切削順序は右あさり歯3R、左あさり歯5L、右あ
さり歯7R、直歯9S、左あさり歯11L、右あさり歯13R、左
あさり歯15Lおよび直歯17Sの順となる。この例で示す鋸
刃１ではワークピースＷの切削を行なうときに、鋸刃１
の進行方向（Ｂ方向）の順序において、直歯9Sの直前に
位置する歯は右あさり歯7Rであり、また直歯17Aの直前
に位置する歯は左あさり歯15Lである。The cutting order of each tooth is as follows: right set teeth 3R, left set teeth 5L, right set teeth 7R, straight teeth 9S, left set teeth 11L, right set teeth 13R, left set teeth 15L, and straight teeth 17S. With the saw blade 1 shown in this example, when cutting the workpiece W, the saw blade 1
In the order in the traveling direction (B direction), the tooth located immediately before the straight tooth 9S is the right set tooth 7R, and the tooth located immediately before the straight tooth 17A is the left set tooth 15L.
すなわち、鋸刃１の進行方向（Ｂ方向）の順序におい
て直歯の直前の１歯においては鋸刃長さ方向に全数が右
から右、左から左のように同一方向のあさり歯であるこ
とを避けるように、右あさり歯と左あさり歯を、直歯の
直前の１歯について交互に左右均等な数をもって配置し
たものである。That is, in the order of the traveling direction of the saw blade 1 (direction B), all the teeth immediately before the straight teeth are straight teeth in the same direction in the saw blade length direction, such as right to right and left to left. In order to avoid this, the right set teeth and the left set teeth are alternately arranged with a uniform number of right and left for one tooth immediately before the straight tooth.
第５図（ａ）〜（ｄ）に示した１グループの鋸刃１で
は、右あさり歯は3R、7R、13Rの計３歯であり、左あさ
り歯も5L、11L、15Lの計３歯である。よって左右方向の
バランスは均等であり、しかも前述したように直歯9Sの
直前に位置する歯は右あさり歯7Rであり、また直歯17S
の直前に位置する歯は左あさり歯15Lとなっており、鋸
刃１の進行方向（Ｂ方向）の順序において、直歯の直前
に全数が同一方向のあさり歯となることを避けている。In one group of saw blades 1 shown in FIGS. 5 (a) to 5 (d), the right set teeth are 3R, 7R, and 13R in total, and the left set teeth are 5L, 11L, and 15L in total. It is. Therefore, the balance in the left-right direction is equal, and the teeth located immediately before the straight teeth 9S are the right set teeth 7R and the straight teeth 17S as described above.
The teeth located immediately before are straight set teeth 15L, and in the order of the traveling direction (B direction) of the saw blade 1, all of the teeth are prevented from being set in the same direction immediately before the straight teeth.
したがって、この鋸刃１の歯先摩耗状態は第５図
（ｄ）に示すようになる。すなわち、直歯9Sは右コーナ
C2に比べて左コーナC1の方の摩耗が大きくなるが、直歯
17Sは左コーナC3に比べて右コーナC4の方の摩耗が大き
くなり、鋸刃１全周に関しては左右均一な摩耗状態とな
る。Therefore, the state of wear of the tooth tip of the saw blade 1 is as shown in FIG. 5 (d). That is, the straight tooth 9S has the right corner
Wear on the left corner C1 is greater than C2, but straight teeth
In 17S, the wear at the right corner C4 is larger than that at the left corner C3, so that the entire circumference of the saw blade 1 is uniformly worn on the left and right sides.
上記実施例は右方向への屈曲を行なった右あさり歯の
３歯と左方向への屈曲を行なった左あさり歯の３歯と左
右方向への屈曲を行なわない直歯の２歯との計８歯を１
グループ（セット）として説明したが、鋸刃の切削進行
方向に対して、順に右あさり歯、左あさり歯、直歯、左
あさり歯、右あさり歯、右あさり歯および直歯と配置し
た６歯を１グループ（セット）した構成の鋸刃も用いら
れる。また、鋸刃の切削進行方向に対して、順に右あさ
り歯、左あさり歯、右あさり歯、直歯の後、構成をくり
返してから、左あさり歯、右あさり歯、左あさり歯、直
歯をくり返す構成の鋸刃とすることも可能である。In the above embodiment, a total of three right set teeth bent rightward, three left set teeth bent leftward, and two straight teeth not bent left and right are used. 8 teeth 1
Although described as a group (set), six teeth are arranged in the order of the cutting edge of the saw blade in the order of right set teeth, left set teeth, straight teeth, left set teeth, right set teeth, right set teeth, and straight teeth. Are also used as a group (set). In addition, after the right set, left set, right set, and straight teeth in the cutting direction of the saw blade, repeat the configuration, then set the left set, right set, left set, and straight. It is also possible to make a saw blade having a configuration in which the above is repeated.
上述した各実施例においては、第１図に示された歯の
形状（すくい面の１部が一角の方向への直線部を形成し
た歯形状）をなして、鋸刃の質量を微細に変化させ、切
断（切削）時の歯先と非削材との衝撃力を分散でき、鋸
刃のもつ周波数を不均一にすることにより、びびり振
動、騒音および歯先の微小欠けを防ぐことができる。In each of the above-described embodiments, the tooth shape shown in FIG. 1 (a tooth shape in which a part of the rake face forms a straight line portion in one corner direction) is used to change the mass of the saw blade minutely. By dispersing the impact force between the tooth tip and the non-cutting material at the time of cutting (cutting) and making the frequency of the saw blade non-uniform, chatter vibration, noise, and minute chipping of the tooth tip can be prevented. .
なお、上述した各実施例に限定されることなく、本発
明の要旨を逸脱しない範囲において種々変更し得ること
は勿論である。It is needless to say that the present invention is not limited to the above-described embodiments, but can be variously modified without departing from the gist of the present invention.
［発明の効果］ 以上のごとき実施例の説明より理解されるように、要
するに本発明は、鋸刃（１）の刃先端（３）におけるす
くい面のすくい角を正のすくい角に設け、上記刃先端
（３）から僅かに離れた位置に負のすくい角（θ１）を
なすすくい面を不連続的に接続して設け、この負のすく
い角のすくい面に円滑に接続して円弧状のガレットを形
成してなるものである。[Effects of the Invention] As can be understood from the above description of the embodiments, in short, the present invention provides the rake angle of the rake face at the blade tip (3) of the saw blade (1) at a positive rake angle. A rake face forming a negative rake angle (θ 1 ) is provided discontinuously at a position slightly away from the blade tip (3), and is smoothly connected to the rake face having the negative rake angle to form an arc. Is formed.
上記構成より明らかなように、本発明においては、刃
先端３におけるすくい面は正のすくい角であり、上記刃
先端３から僅かに離れた位置には負のすくい角のすくい
面が不連続的に接続してあり、そして、この負のすくい
角のすくい面には円弧状のガレットが円滑に接続してあ
る。As is apparent from the above configuration, in the present invention, the rake face at the blade tip 3 has a positive rake angle, and a rake face having a negative rake angle is discontinuous at a position slightly away from the blade tip 3. , And an arc-shaped gullet is smoothly connected to the rake face of the negative rake angle.
したがって、刃先端３において切削された後の切粉
は、正のすくい角のすくい面に沿って移動した後、負の
すくい角のすくい面に沿う方向へ移動して前記刃先端３
から前方へ離反され、円弧状のガレット部分においてゼ
ンマイ状に巻くことになる。Accordingly, the chips after being cut at the blade tip 3 move along the rake face having a positive rake angle, and then move in the direction along the rake face having a negative rake angle to move along the rake face.
And is wound forward in a circular arc-shaped gullet portion.
この際、切粉は、正のすくい角のすくい面から負のす
くい角のすくい面に移行するとき、切粉の移動方向が急
激に変更されるので、切粉には折れを生じて亀裂が生じ
易いものであり、ゼンマイ状に巻いた場合であっても分
断し易く、後処理がより容易になるものである。At this time, when the chip moves from the rake face of the positive rake angle to the rake face of the negative rake angle, the moving direction of the chip is rapidly changed, so the chip is broken and cracks are generated. This is easy to occur, and it is easy to cut even when wound in a spiral shape, and the post-processing becomes easier.
また、切粉の移動方向が急激に変更されることによ
り、すくい面に対する切粉の接触性が悪いものであり、
接触長が短くなって切削抵抗が減少するものである。In addition, the contact direction of the swarf to the rake face is poor due to the abrupt change in the moving direction of the swarf,
The contact length is shortened and the cutting resistance is reduced.
第１図は本発明が適用された鋸刃の拡大平面図であり、
従来例と比較した説明図である。 第２図は本発明が適用された実施例を示す鋸刃で、
（ａ）図は正面図、（ｂ）図は底面図である。 第３図は本発明が適用された他の実施例を示す鋸刃で、
（ａ）図は正面図、（ｂ）図は（ａ）図におけるｂ−ｂ
線に沿った断面図、（ｃ）図は底面図である。 第４図は本発明が適用された他の実施例を示す鋸刃で、
（ａ）図は正面図、（ｂ）図は（ａ）図およびｂ−ｂ線
に沿った断面図、（ｃ）図は底面図である。 第５図は本実施例が適用された他の実施例を示す鋸刃
で、（ａ）図は正面図、（ｂ）図は底面図、（ｃ）図は
（ａ）図におけるｃ−ｃ線に沿った断面図、および、
（ｄ）図は歯先摩耗状態を示した底面図である。 １…鋸刃、３…歯先端FIG. 1 is an enlarged plan view of a saw blade to which the present invention is applied,
It is explanatory drawing in comparison with the conventional example. FIG. 2 is a saw blade showing an embodiment to which the present invention is applied.
(A) is a front view, and (b) is a bottom view. FIG. 3 is a saw blade showing another embodiment to which the present invention is applied.
(A) is a front view, (b) is bb in FIG.
A cross-sectional view along the line, and (c) is a bottom view. FIG. 4 is a saw blade showing another embodiment to which the present invention is applied.
(A) is a front view, (b) is a sectional view taken along the line (a) and bb, and (c) is a bottom view. FIG. 5 is a saw blade showing another embodiment to which this embodiment is applied. FIG. 5 (a) is a front view, FIG. 5 (b) is a bottom view, and FIG. 5 (c) is cc in FIG. Cross section along the line, and
(D) is a bottom view showing the tooth tip wear state. 1 ... saw blade, 3 ... tooth tip
Claims (1)
面のすくい角を正のすくい角に設け、上記刃先端（３）
から僅かに離れた位置に負のすくい角（θ１）をなすす
くい面を不連続的に接続して設け、この負のすくい角の
すくい面に円滑に接続して円弧状のガレットを形成して
なることを特徴とする鋸刃。A rake angle of a rake face at a blade tip (3) of a saw blade (1) is provided at a positive rake angle, and the blade tip (3) is provided.
A rake face forming a negative rake angle (θ 1 ) is provided discontinuously at a position slightly away from the rake face, and smoothly connected to the rake face having the negative rake angle to form an arc-shaped gullet. A saw blade characterized by the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62164084A JP2616924B2 (en) | 1987-07-02 | 1987-07-02 | Saw blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62164084A JP2616924B2 (en) | 1987-07-02 | 1987-07-02 | Saw blade |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6411708A JPS6411708A (en) | 1989-01-17 |
| JP2616924B2 true JP2616924B2 (en) | 1997-06-04 |
Family
ID=15786475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62164084A Expired - Fee Related JP2616924B2 (en) | 1987-07-02 | 1987-07-02 | Saw blade |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2616924B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6167792B1 (en) | 1995-03-23 | 2001-01-02 | American Saw & Mfg. Company | Tooth form for a saw blade |
| JP5238406B2 (en) | 2008-08-20 | 2013-07-17 | 株式会社アマダ | Band saw blade |
| US9731365B2 (en) * | 2011-12-07 | 2017-08-15 | Irwin Industrial Tool Company | Saw blade with tooth form projection |
| JP5903345B2 (en) | 2012-07-17 | 2016-04-13 | 株式会社アマダホールディングス | Optimum arrangement method of each tooth of saw blade and saw blade |
| US10537951B2 (en) | 2017-08-16 | 2020-01-21 | Black & Decker Inc. | Band saw blade for cutting structural workpieces |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58137520A (en) * | 1982-01-13 | 1983-08-16 | Amada Co Ltd | Band saw blade |
| IT8384901A0 (en) * | 1983-01-05 | 1983-01-05 | O A R M Di Fiorini Antonio & C | SAWING TOOL, WITH A CONFORMATION SUITABLE FOR IMPRISING CENTRIFUGAL FORCE ON THE REMOVED MATERIAL. |
| JPS61185406A (en) * | 1985-02-14 | 1986-08-19 | 松下電工株式会社 | Circular saw edge |
| JPH0749168B2 (en) * | 1987-06-29 | 1995-05-31 | 兼房株式会社 | Circular saw with super hard tip |
-
1987
- 1987-07-02 JP JP62164084A patent/JP2616924B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6411708A (en) | 1989-01-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4727788A (en) | Saw blade | |
| JP2735691B2 (en) | Improved band saw blade | |
| US6220139B1 (en) | Saw blade | |
| US5884547A (en) | Saw blade tooth form | |
| JP2002505626A (en) | Improved band saw | |
| US6220140B1 (en) | Tooth arrangement of metal-cutting bandsaw blade | |
| JP5584046B2 (en) | Band saw blade manufacturing method | |
| JPS6150735B2 (en) | ||
| JP2616924B2 (en) | Saw blade | |
| JP2000271817A (en) | Work cutting method and saw blade | |
| JPH06716A (en) | Band saw blade | |
| US4589306A (en) | Saw and method for the manufacture thereof | |
| JP4301806B2 (en) | Saw blade | |
| JPH06717A (en) | Saw blade | |
| JP2003340642A (en) | Saw blade | |
| JPH0724973B2 (en) | Saw blade | |
| JP4132215B2 (en) | Saw blade | |
| JP2686084B2 (en) | Saw blade | |
| JP3283753B2 (en) | Saw blade | |
| JP2000343324A (en) | Saw blade with tooth group different in tooth height and face width repeated | |
| JPS6234487B2 (en) | ||
| JP5592093B2 (en) | Saw blade | |
| JP2602634B2 (en) | Saw blade | |
| JPS61241015A (en) | Saw blade | |
| JPS59187419A (en) | Saw tooth of circular saw machine or the like |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |