JP2006150487A

JP2006150487A - Saw blade

Info

Publication number: JP2006150487A
Application number: JP2004343263A
Authority: JP
Inventors: Yoshiaki Ishida; 義昭石田; Hironobu Hashizume; 博信橋爪
Original assignee: Nachi Fujikoshi Corp
Current assignee: Nachi Fujikoshi Corp
Priority date: 2004-11-29
Filing date: 2004-11-29
Publication date: 2006-06-15

Abstract

<P>PROBLEM TO BE SOLVED: To provide a saw blade capable of improving roughness on a cutting face and bend cut quality by preventing occurrence of periodical vibration and noise occurring when cutting is executed by the cutting edge in the same cycle during cutting, and also, capable of preventing reduction of a service lifetime of the saw blade due to occurrence of micro-chipping at the cutting edge in the saw blade having continuous blades at equal pitches. <P>SOLUTION: The continuous blades at equal pitches are composed as follows. One group is composed of a preceding group (A) constituted of a right set blade 1R and a left set blade 1L and a succeeding group (B) following the preceding group and constituted of a left set blade 2L and a right set blade 2R in cross-sectional view in which a blade part is set upward. The preceding group (A) and the succeeding group (B) are alternately provided. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は等ピッチの連続刃を有する鋸刃に関する。 The present invention relates to a saw blade having a continuous blade of equal pitch.

従来の鋼材などの被削材を切断する帯鋸盤に使用される帯鋸刃などの鋸刃は、等ピッチの連続刃を有する鋸刃としては、例えば図３に示すような、刃部を上にした断面図でみて、直立刃に続く右あさり刃及び左あさり刃で構成する３刃でグループを構成し、これを繰り返して備えて等ピッチの連続刃を形成する。又、アルミニウム、冷凍マグロ切断用など特殊用途としては、図４に示すような、刃部を上にした断面図でみて、右あさり刃及び左あさり刃で構成する２刃でグループを構成し、これを繰り返して備えて等ピッチの連続刃を形成する。従来の不等ピッチの連続刃を有する鋸刃としては、例えば特許文献１に示すものが知られている。この不等ピッチ刃は、刃部を上にした断面図でみて、直立刃に続く複数の左又は右あさり刃で構成するグループＡと、このグループＡと同じピッチ配置で直立刃に続くグループＡとは逆方向に振られた同数の右又は左あさり刃で構成するグループＢと、を交互に備えてなるものが開示されている。
特開２０００−１３５６２５号公報 A saw blade such as a band saw blade used in a conventional band saw machine for cutting a work material such as a steel material is a saw blade having a continuous blade with an equal pitch. For example, as shown in FIG. As shown in the sectional view, a group is constituted by three blades composed of a right set blade and a left set blade following the upright blade, and this is repeated to form a continuous blade with an equal pitch. In addition, as a special application such as for cutting aluminum and frozen tuna, as shown in the cross-sectional view with the blade part up as shown in FIG. 4, a group is composed of two blades composed of a right set blade and a left set blade. By repeating this, a continuous blade with an equal pitch is formed. As a conventional saw blade having unequal pitch continuous blades, for example, the one shown in Patent Document 1 is known. This unequal pitch blade has a group A composed of a plurality of left or right clawing blades following the upright blade, and a group A following the upright blade with the same pitch arrangement as this group A, as seen in a sectional view with the blade portion up. And a group B composed of the same number of right or left set blades swung in the opposite direction is disclosed.
JP 2000-135625 A

特許文献１に開示する不等ピッチ刃は、切削長が変化する異形材などに大きいピッチと小さいピッチが切削長さに適応して作用し、切削加工時の切削点を不等に分散することにより、振動や騒音を抑えることから広く使用され、鋸刃としては不等ピッチ刃が主流になっているが、切削長が同じのソリッドの被削材を繰り返して切断するときは、不等ピッチ刃は不等ピッチ刃の大きいピッチ刃による刃欠け、小さいピッチ刃による目詰まりに起因する曲がりのトラブルなどがある。このため切削長が同じのソリッドの被削材を繰り返して切断するときは、等ピッチ刃の適用範囲が多く、その切削長さに最適な単一の等ピッチ選定により、安定した切削が行える。しかしながら、従来の例えば図３、図４に示すような等ピッチ刃では、切削点でなる刃先が一定間隔で並んでおり、２〜３刃といった少数刃で１グループを構成し、これを繰り返して備えて等ピッチの連続刃を形成していることから、切削加工時に刃先が同一周期で切削するときに発生する周期的な振動が発生し、切削音の増大をを招いている。特に図３に示すような、直立刃に続く右あさり刃及び左あさり刃で構成する３刃でグループを構成し、これを繰り返して備えて等ピッチの連続刃を形成するものでは、等ピッチによる刃先の同一切削周期に起因する振動、騒音に加え、直立刃に続く各右あさり刃及び左あさり刃においても同一切削の繰り返しで、上記振動、騒音をさらに増幅し易い課題があった。振動、騒音が大きいと、切断面粗さが粗くなり切り曲がり品質の低下を招き、刃先にミクロチッピングを発生させて鋸刃の寿命低下を招いた。 The unequal pitch blade disclosed in Patent Document 1 has a large pitch and a small pitch adapted to the cutting length to deformed materials with varying cutting lengths, and the cutting points at the time of cutting are unevenly distributed. Is widely used to reduce vibration and noise, and unequal pitch blades are the mainstream as saw blades, but when cutting a solid work material with the same cutting length repeatedly, unequal pitch The blades have problems such as chipping caused by large pitch blades with uneven pitch blades and bending problems caused by clogging due to small pitch blades. For this reason, when a solid work material having the same cutting length is repeatedly cut, the application range of the equal pitch blade is large, and stable cutting can be performed by selecting a single equal pitch optimum for the cutting length. However, in the conventional equi-pitch blades as shown in FIGS. 3 and 4, for example, the cutting edges are arranged at regular intervals, and one group is formed by a few blades such as 2-3 blades, and this is repeated. Since a continuous blade with an equal pitch is provided, periodic vibrations that occur when the cutting edge cuts at the same cycle during cutting are generated, leading to an increase in cutting sound. In particular, as shown in FIG. 3, a group is composed of three blades composed of a right and left blades following an upright blade, and this is repeated to form a continuous blade of equal pitch. In addition to vibration and noise caused by the same cutting cycle of the cutting edge, each of the right and left settling blades following the upright blade has a problem that it is easy to further amplify the vibration and noise by repeating the same cutting. When the vibration and noise are large, the cutting surface roughness becomes rough and the cutting quality is deteriorated, and the microchipping is generated at the cutting edge, thereby reducing the life of the saw blade.

本発明の課題はかかる従来技術の課題を解決した、等ピッチの連続刃を有する鋸刃において、切削加工時に刃先が同一周期で切削するときに発生する周期的な振動、騒音の発生、同様に直立刃に続く右あさり刃及び左あさり刃をグループとした同一切削パターンの繰り返しで、上記振動、騒音をさらに増幅することを防止し、切断面粗さを向上させ、切り曲がり品質を向上させて、刃先にミクロチッピングを発生させて鋸刃の寿命低下を招くことがない鋸刃を提供することにある。 An object of the present invention is to solve the problems of the prior art, and in a saw blade having a continuous blade with an equal pitch, generation of periodic vibration and noise generated when the cutting edge is cut at the same cycle during cutting, as well as Repeating the same cutting pattern with the right and left settling blades following the upright blade as a group prevents further vibration and noise amplification, improves the cut surface roughness, and improves the cutting quality. Another object of the present invention is to provide a saw blade that does not cause microchipping at the blade edge and causes a decrease in the life of the saw blade.

このため本発明の第１発明は、等ピッチの連続刃を、刃部を上にした断面図でみて、右あさり刃及び左あさり刃で構成する先グループと、それに続く左あさり刃及び右あさり刃で構成する後グループと、を交互に備えてなる（各あさり刃の左右が逆でもよい）ことを特徴とする鋸刃ことを特徴とする鋸刃によって上述の本発明の課題を解決した。
本発明の第２発明は、等ピッチの連続刃を、刃部を上にした断面図でみて、直立刃に続く右あさり刃、左あさり刃及び右あさり刃で構成する先行グループと、それに続く直立刃に続く左あさり刃、右あさり刃及び左あさり刃で構成する後続グループと、を交互に備えてなる（各あさり刃の左右が逆でもよい）ことを特徴とする鋸刃によっても上述の本発明の課題を解決した。 For this reason, according to the first aspect of the present invention, when a continuous blade with an equal pitch is seen in a cross-sectional view with the blade portion facing upward, a tip group composed of a right set blade and a left set blade, followed by a left set blade and a right set blade. The above-mentioned problems of the present invention have been solved by a saw blade characterized by comprising a rear group composed of blades alternately and a saw blade characterized in that the right and left of each set-up blade may be reversed.
The second invention of the present invention is a preceding group consisting of a right-claw blade, a left-cutter blade, and a right-cutter blade following an upright blade, as viewed from a cross-sectional view with the blade portion up, with a continuous blade of equal pitch, followed by The above-mentioned saw blade is characterized in that it comprises alternating left and right set blades following the upright blade, right set blade and left set blade (although each set blade may be reversed) The problem of the present invention has been solved.

本発明の第１発明においては、右あさり刃及び左あさり刃で構成する先グループと、それに続く左あさり刃及び右あさり刃で構成する後グループと、を交互に備えてなる（各あさり刃の左右が逆でもよい）ことを特徴とする鋸刃により、等ピッチの連続刃を有する鋸刃において、切削加工時に刃先が同一周期で切削するときに発生する周期的な振動、騒音の発生を防止し、切断面粗さを向上させ、切り曲がり品質を向上させて、刃先にミクロチッピングを発生させて鋸刃の寿命低下を招くことがない鋸刃を提供する。同様に本発明の第２発明においては、直立刃に続く右あさり刃、左あさり刃及び右あさり刃で構成する先行グループと、それに続く直立刃に続く左あさり刃、右あさり刃及び左あさり刃で構成する後続グループと、を交互に備えてなる（各あさり刃の左右が逆でもよい）ことを特徴とする鋸刃により、同一切削パターンの繰り返しで、上記振動、騒音をさらに増幅することを防止し、切断面粗さを向上させ、切り曲がり品質を向上させて、刃先にミクロチッピングを発生させて鋸刃の寿命低下を招くことがない鋸刃を提供するものとなった。 In the first invention of the present invention, a tip group composed of a right set blade and a left set blade and a subsequent group composed of a left set blade and a right set blade are alternately provided (for each set blade). With the saw blade characterized by the fact that the left and right sides may be reversed, the generation of periodic vibration and noise that occurs when the cutting edge is cut at the same cycle during cutting in a saw blade having a continuous blade with an equal pitch is prevented. Thus, the present invention provides a saw blade that improves the roughness of the cut surface, improves the cutting quality, and does not cause microchipping at the cutting edge to reduce the life of the saw blade. Similarly, in the second invention of the present invention, a leading group composed of a right set blade, a left set blade and a right set blade following an upright blade, and a left set blade, a right set blade and a left set blade following an upright blade which follows. And a subsequent group consisting of: (a pair of claws may be reversed), the vibration and noise can be further amplified by repeating the same cutting pattern. The present invention provides a saw blade that prevents, improves the cutting surface roughness, improves the cutting quality, and does not cause micro chipping at the cutting edge to reduce the life of the saw blade.

本発明を実施するための最良の形態を図面に基づいて説明する。各図面において、図１は本発明の第１発明の実施の形態を示す、（Ａ）は正面図、（Ｂ）は（Ａ）のｂ−ｂ線に沿った断面図、（Ｃ）は（Ａ）の上面図、（Ｄ）は（Ａ）の１枚の刃の部分拡大図、図２は本発明の第２発明の実施の形態を示す、（Ａ）は正面図、（Ｂ）は（Ａ）のｂ−ｂ線に沿った断面図、（Ｃ）は（Ａ）の上面図、（Ｄ）は（Ａ）の１枚の刃の部分拡大図、図３は本発明の第２発明の実施の形態を示す上面図、図４は従来の等ピッチの連続刃を有する鋸刃の上面図、図５は図４とは異なる従来の等ピッチの連続刃を有する鋸刃の上面図、をそれぞれ示す。 The best mode for carrying out the present invention will be described with reference to the drawings. In each of the drawings, FIG. 1 shows an embodiment of the first invention of the present invention, (A) is a front view, (B) is a sectional view taken along line bb of (A), and (C) is ( (A) is a top view, (D) is a partially enlarged view of one blade of (A), FIG. 2 shows an embodiment of the second invention of the present invention, (A) is a front view, and (B) is a front view. (A) Cross-sectional view along line bb, (C) is a top view of (A), (D) is a partially enlarged view of one blade of (A), and FIG. 3 is a second view of the present invention. FIG. 4 is a top view of a conventional saw blade having a continuous blade with an equal pitch, and FIG. 5 is a top view of a conventional saw blade having a continuous blade with an equal pitch different from FIG. , Respectively.

図１に示すように、本発明の第１発明を実施するための最良の形態の鋸刃は、等ピッチの連続刃を、刃部を上にした断面図でみて、右方向にあさり倒しした右あさり刃1R及び左方向にあさり倒しした左あさり刃1Lで構成する先グループＡと、それに続く左あさり刃2L及び右あさり刃2Rで構成する後グループＢと、で１グループを構成し、これを交互に備えてなる（各あさり刃の左右が逆で、等ピッチの連続刃を、左あさり刃1L及び右あさり刃1Rで構成する先グループＡと、それに続くそれに続く先グループＡと同じピッチ構成及び刃数を有し、右あさり刃2R及び左あさり刃2Lで構成する後グループとＢと、で１グループを構成し、これを交互に備えてなるものでもよい）ことを特徴とする。図１（Ｂ）の（Ａ）のｂ−ｂ線に沿った断面図に示すように、右あさり刃Ｒと左あさり刃Ｌとが見られる。図１（Ｄ）の（Ａ）の１枚の刃の部分拡大図に見られるように、連続刃は、等ピッチ刃形で、すくい角α、刃物角β、刃高Ｈは同一とした。 As shown in FIG. 1, the saw blade of the best mode for carrying out the first invention of the present invention is a straight blade with an equal pitch, as seen in a cross-sectional view with the blade portion facing upward, as shown in FIG. A group consisting of a front group A consisting of a right set blade 1R and a left set blade 1L tilted to the left, followed by a rear group B consisting of a left set blade 2L and a right set blade 2R constitutes one group. (Each pitching blade is reversed in the left and right direction, and the same pitch as the leading group A, which consists of the left and right pitching blades 1L and 1R, and the subsequent pitching group A, which is the same pitch. It has a configuration and the number of blades, and a rear group constituted by the right set-up blade 2R and the left set-up blade 2L and B may constitute one group, which may be alternately provided). As shown in the cross-sectional view along the line bb in (A) of FIG. 1 (B), the right set-up blade R and the left set-up blade L can be seen. As can be seen from the partially enlarged view of one blade in FIG. 1D, the continuous blade has an equal pitch blade shape, and the rake angle α, the blade angle β, and the blade height H are the same.

かかる構成により、あさり刃のパターンを１グループ内で、先グループＡと後グループＢとでは、あさりの倒し位置を反対にして構成したので、等ピッチの連続刃を有する鋸刃において、先グループＡで発生した振動を後グループＢで相殺し減衰させ抑制するので、切削加工時に刃先が同一周期で切削するときに発生する周期的な振動、騒音の発生を防止することにより、精度をよくし、するものとなった。 With such a configuration, the pattern of the claw blades is configured in one group, with the front group A and the rear group B having the crushing positions of the crushing blades opposite to each other. Since the vibration generated in is canceled and attenuated in the rear group B, the accuracy is improved by preventing the generation of periodic vibration and noise generated when the cutting edge is cut at the same period during cutting, It became something to do.

図２に示すように、本発明の第２発明を実施するための最良の形態の鋸刃は、刃部に M42、本体部に特殊ばね鋼を使用したバイメタル構造で、鋸幅をＷ、鋸厚をｔ、刃数を１インチ当たり３山（ピッチP1＝P2＝P3＝P4）、あさり幅Ｔは鋼材切断用の標準あさりとした。等ピッチの連続刃を、刃部を上にした断面図でみて、あさりを出さない直立刃1Sに続く右方向にあさり倒しした右あさり刃1R、左方向にあさり倒しした左あさり刃1L及び右あさり刃2Rで構成する先グループＡと、それに続く先グループＡと同じピッチ構成及び刃数を有しあさり倒し位置を反対にした、直立刃2Sに続く左あさり刃2L、右あさり刃3R及び左あさり刃3Lで構成する後グループＢと、で１グループを構成し、これを交互に備えてなる（各あさり刃の左右が逆で、等ピッチの連続刃を、直立刃1Sに続く左あさり刃1L及び右あさり刃1Rで構成する先グループＡと、それに続く直立刃2Sに続く右あさり刃2R、左あさり刃2L及び右あさり刃3Rで構成する後グループとＢと、で１グループを構成し、これを交互に備えてなるものでもよい）ことを特徴とする。図２（Ｂ）の（Ａ）のｂ−ｂ線に沿った断面図に示すように、直立刃Ｓに続く右あさり刃Ｒと左あさり刃Ｌとが見られる。図２（Ｄ）の（Ａ）の１枚の刃の部分拡大図に見られるように、連続刃は、等ピッチ刃形で、すくい角α、刃物角β、刃高Ｈは同一とした。 As shown in FIG. 2, the saw blade of the best mode for carrying out the second invention of the present invention has a bimetal structure using M42 for the blade portion and special spring steel for the main body portion, with a saw width of W and a saw. The thickness is t, the number of blades is 3 threads per inch (pitch P1 = P2 = P3 = P4), and the set width T is a standard set for cutting steel. Seeing a continuous blade with an equal pitch in a cross-sectional view with the blade up, the right-cutter blade 1R swung down to the right following the upright blade 1S that does not crush, the left-cutter blade 1L swung down to the left, and the right The left set-up blade 2L, the right set-up blade 3R, and the left set-up blade A that have the same pitch configuration and the same number of blades as the next set-up group A and the upright position 2S. The rear group B and the rear group B, which consists of 3L of the set-up blades, comprise one group alternately. One group is composed of the tip group A consisting of 1L and the right set-up blade 1R, and the rear group consisting of the right set-up blade 2R, the left set-up blade 2L and the right set-up blade 3R following the upright blade 2S, and B. , Which may be provided alternately with each other) . As shown in the cross-sectional view along the line bb in FIG. 2B, the right set blade R and the left set blade L following the upright blade S can be seen. As can be seen in the partial enlarged view of one blade in FIG. 2D, the continuous blade has an equal pitch blade shape, and the rake angle α, the blade angle β, and the blade height H are the same.

かかる構成により、直立刃に続くあさり刃のパターンを１グループ内で、先グループＡと後グループＢとでは、あさりの倒し位置を反対にして構成したので、先グループＡで発生した振動を後グループＢで相殺し減衰させ抑制するので、同一切削パターンの繰り返しで切削するときに発生する周期的な振動、騒音の発生、これら振動、騒音をさらに増幅することを防止し、切断面粗さを向上させ、切り曲がり精度をよくし、刃先にミクロチッピングを発生させて鋸刃の寿命低下を招くことがない鋸刃を提供するものとなった。 With this configuration, the pattern of the claw blades following the upright blades is configured in one group, with the front group A and the rear group B having the reverse positions of the crawlers in the opposite direction. B offsets and attenuates to suppress periodic vibration and noise generated when cutting with the same cutting pattern repeatedly, preventing further amplification of these vibrations and noise, and improving cutting surface roughness Accordingly, the present invention provides a saw blade that improves the bending accuracy and does not cause microchipping at the blade edge to cause a decrease in the life of the saw blade.

図３に示すように、本発明の第３発明を実施するための最良の形態の鋸刃は、等ピッチの連続刃を、刃部を上にした断面図でみて、直立刃1Sに続く右あさり刃1R及び左あさり刃1Lで構成するグループＡと、直立刃2Sに続く右あさり刃2R、左あさり刃2L及び右あさり刃3Rで構成するグループＢと、直立刃3Sに続く左あさり刃3L、右あさり刃4R及び左あさり刃4Lで構成するグループＣ及び直立刃4Sに続く右あさり刃5R及び左あさり刃5Lで構成するグループＤと、で１グループを構成し、これを交互に備えてなる（各あさり刃の左右が逆で、等ピッチの連続刃を、直立刃1Sに続く左あさり刃1L及び右あさり刃1Rで構成するグループＡと、直立刃2Sに続く左あさり刃2L、右あさり刃2R及び左あさり刃3Lで構成するグループＢと、直立刃3Sに続く右あさり刃3R、左あさり刃4L及び右あさり刃4Rで構成するグループＣ及び直立刃4Sに続く左あさり刃5L及び右あさり刃5Rで構成するグループＤと、で１グループを構成し、これを交互に備えてなるものでもよい）ことを特徴とする。 As shown in FIG. 3, the saw blade of the best mode for carrying out the third invention of the present invention is a right-hand blade that follows the upright blade 1 </ b> S as seen from a cross-sectional view of a continuous blade having an equal pitch with the blade portion up Group A, which consists of a set-up blade 1R and a left set-up blade 1L, a group B, which consists of a right set-up blade 2R, a left set-up blade 2L and a right set-up blade 3R following an upright blade 2S, and a left set-up blade 3L which follows an upright blade 3S A group consisting of a group C consisting of a right set blade 4R and a left set blade 4L and a group D consisting of a right set blade 5R and a left set blade 5L following an upright blade 4S constitute one group, and these are alternately provided. (Group A consisting of a left-cutter blade 1L following the upright blade 1S and a right-cutter blade 1R, and a left-cutter blade 2L following the upright blade 2S, right Group B, which consists of the claw blade 2R and the left claw blade 3L, and the right claw blade 3R following the upright blade 3S, the left crust The group C composed of the blade 4L and the right set blade 4R and the group D composed of the left set blade 5L and the right set blade 5R following the upright blade 4S constitute one group, and these are alternately provided. Good).

かかる構成により、直立刃に続くあさり刃のパターンを１グループ内で、先グループＢと後グループＣとでは、あさりの倒し方向を反対にして構成したので、同一切削パターンの繰り返しで、上記振動、騒音をさらに増幅することを防止し、切断面粗さを向上させ、切り曲がり品質を向上させて、刃先にミクロチッピングを発生させて鋸刃の寿命低下を招くことがない鋸刃を提供するものとなった。 With such a configuration, the pattern of the claw blades following the upright blade is configured in one group, with the front group B and the rear group C having opposite crushing directions, so that the vibration, Providing a saw blade that prevents further amplification of noise, improves cutting surface roughness, improves cutting quality, and does not cause microchipping at the cutting edge to reduce the life of the saw blade It became.

図３に示す、本発明の第３発明の実施の形態の鋸刃を、刃部にPM5300、本体部に特殊ばね鋼を使用したバイメタル構造で、鋸幅をＷ＝41、鋸厚をｔ＝1.3 、刃数を１インチ当たり３山（ピッチP1＝P2＝P3）、あさり幅Ｔは鋼材切断用の標準あさりとした鋸刃試作品を試作し、被削材；金型鋼（プレハードン鋼 HRC29〜34）Ｗ210 ×Ｈ100 を、切削速度Ｖ＝25m/min 、切断時間10分／1カット（切削率21cm²）で50カットし、図４に示す従来品を、同様なバイメタル構造、鋸幅をＷ＝41、鋸厚をｔ＝1.3 、刃数を１インチ当たり３山として製作し、性能比較を行った。試作品は切り曲がり量は 0.25mm で、従来品に比べて39％減少し、試作品の切断面粗さは 0.025mmで従来品に比べて20％減少し面粗さが向上し、切断面精度が改良され、鋸刃寿命を延長することができた。 The saw blade according to the third embodiment of the present invention shown in FIG. 3 has a bimetal structure using PM5300 for the blade portion and special spring steel for the main body portion, the saw width is W = 41, and the saw thickness is t = 1.3, 3 blades per inch (pitch P1 = P2 = P3), and the tester width T is a standard saw blade prototype for cutting steel material. Work material: Die steel (prehardened steel HRC29 ~ the 34) W210 × H100, cutting speed V = 25 m / min, 50 cut by the cutting time 10 min / 1 cut (cut rate 21cm ^2), a conventional product shown in Fig 4, similar bimetallic structure, a saw width W = 41, saw thickness is t = 1.3, number of teeth is 3 threads per inch, and performance comparison was made. The prototype has a cutting amount of 0.25mm, a 39% decrease compared to the conventional product, and the cut surface roughness of the prototype is 0.025mm, a 20% decrease compared to the conventional product, improving the surface roughness and cutting surface. The accuracy was improved and the saw blade life could be extended.

〔発明を実施するための最良の形態の効果〕
以上述べたように、本発明を実施するための最良の形態においては、右あさり刃及び左あさり刃で構成する先グループと、それに続く左あさり刃及び右あさり刃で構成する後グループと、を交互に備えてなる（各あさり刃の左右が逆でもよい）ことを特徴とする鋸刃により、等ピッチの連続刃を有する鋸刃において、切削加工時に刃先が同一周期で切削するときに発生する周期的な振動、騒音の発生をを防止し、切断面粗さを向上させ、切り曲がり品質を向上させて、刃先にミクロチッピングを発生させて鋸刃の寿命低下を招くことがない鋸刃を提供する。同様に本発明の第２発明においては、直立刃に続く右あさり刃、左あさり刃及び右あさり刃で構成する先行グループと、それに続く直立刃に続く左あさり刃、右あさり刃及び左あさり刃で構成する後続グループと、を交互に備えてなる（各あさり刃の左右が逆でもよい）ことを特徴とする鋸刃により、同一切削パターンの繰り返しで、上記振動、騒音をさらに増幅することを防止し、切断面粗さを向上させ、切り曲がり品質を向上させて、刃先にミクロチッピングを発生させて鋸刃の寿命低下を招くことがない鋸刃を提供するものとなった。 [Effects of the best mode for carrying out the invention]
As described above, in the best mode for carrying out the present invention, a front group composed of a right set blade and a left set blade, and a rear group composed of a left set blade and a right set blade following it, Occurs when the cutting edge is cut at the same period during cutting in a saw blade having a continuous blade of equal pitch by a saw blade characterized in that it is provided alternately (the right and left of each set of blades may be reversed) A saw blade that prevents the occurrence of periodic vibration and noise, improves the roughness of the cut surface, improves the cutting quality, and generates microchipping at the cutting edge, which does not reduce the life of the saw blade. provide. Similarly, in the second invention of the present invention, a leading group composed of a right set blade, a left set blade and a right set blade following an upright blade, and a left set blade, a right set blade and a left set blade following the upright blade. And a subsequent group consisting of: (a pair of claws may be reversed), the vibration and noise can be further amplified by repeating the same cutting pattern. The present invention provides a saw blade that prevents, improves the cutting surface roughness, improves the cutting quality, and does not cause micro chipping at the cutting edge to reduce the life of the saw blade.

本発明の第１発明の実施の形態を示す、（Ａ）は正面図、（Ｂ）は（Ａ）のｂ−ｂ線に沿った断面図、（Ｃ）は（Ａ）の上面図、（Ｄ）は（Ａ）の１枚の刃の部分拡大図を示す。(A) is a front view, (B) is a cross-sectional view taken along line bb of (A), (C) is a top view of (A), showing an embodiment of the first invention of the present invention. D) shows a partially enlarged view of one blade of (A). 本発明の第２発明の実施の形態を示す、（Ａ）は正面図、（Ｂ）は（Ａ）のｂ−ｂ線に沿った断面図、（Ｃ）は（Ａ）の上面図、（Ｄ）は（Ａ）の１枚の刃の部分拡大図を示す。(A) is a front view, (B) is a sectional view taken along line bb in (A), (C) is a top view of (A), showing an embodiment of the second invention of the present invention. D) shows a partially enlarged view of one blade of (A). 本発明の第２発明の実施の形態を示す上面図を示す。The top view which shows embodiment of 2nd invention of this invention is shown. 従来の等ピッチの連続刃を有する鋸刃の上面図を示す。The top view of the conventional saw blade which has a continuous blade of equal pitch is shown. 図４とは異なる従来の等ピッチの連続刃を有する鋸刃の上面図を示す。The top view of the saw blade which has the continuous blade of the conventional equal pitch different from FIG.

符号の説明Explanation of symbols

1S,2S,3S,4S ・・直立刃
1R,2R,3R,4R,5R・・右あさり刃
1L,2L,3L,4L,5L・・左あさり刃 1S, 2S, 3S, 4S ・・ Upright blade
1R, 2R, 3R, 4R, 5R ・・ Right blade
1L, 2L, 3L, 4L, 5L ・・ Left set-up blade

Claims

等ピッチの連続刃を、刃部を上にした断面図でみて、右あさり刃及び左あさり刃で構成する先グループと、それに続く左あさり刃及び右あさり刃で構成する後グループと、を交互に備えてなることを特徴とする鋸刃。 Looking at the same pitch continuous blades in a cross-sectional view with the blade part facing up, the front group consisting of the right and left set blades and the rear group consisting of the left and right set blades are alternated. A saw blade characterized by being prepared for.

等ピッチの連続刃を、刃部を上にした断面図でみて、左あさり刃及び右あさり刃で構成する先グループと、それに続く右あさり刃及び左あさり刃で構成する後グループと、を交互に備えてなることを特徴とする鋸刃。 Looking at the same pitch continuous blades in a cross-sectional view with the blade part facing up, the tip group consisting of the left and right set blades and the rear group consisting of the right and left set blades are alternating. A saw blade characterized by being prepared for.

等ピッチの連続刃を、刃部を上にした断面図でみて、直立刃に続く右あさり刃、左あさり刃及び右あさり刃で構成する先行グループと、それに続く直立刃に続く左あさり刃、右あさり刃及び左あさり刃で構成する後続グループと、を交互に備えてなることを特徴とする鋸刃。 Looking at a continuous blade of equal pitch in a cross-sectional view with the blade portion up, a leading group consisting of a right set blade, a left set blade and a right set blade following the upright blade, followed by a left set blade following the upright blade, A saw blade characterized by alternately comprising a subsequent group composed of a right set blade and a left set blade.

等ピッチの連続刃を、刃部を上にした断面図でみて、直立刃に続く左あさり刃、右あさり刃及び左あさり刃で構成する先行グループと、それに続く直立刃に続く右あさり刃、左あさり刃及び右あさり刃で構成する後続グループと、を交互に備えてなることを特徴とする鋸刃。 Seeing the same pitch continuous blades in a cross-sectional view with the blade portion up, the leading group consisting of a left set blade, right set blade and left set blade following the upright blade, followed by the right set blade following the upright blade, A saw blade characterized in that it comprises alternating groups of left and right set blades and subsequent set up.

等ピッチの連続刃を、刃部を上にした断面図でみて、直立刃に続く右あさり刃及び左あさり刃で構成するグループＡと、直立刃に続く右あさり刃、左あさり刃及び右あさり刃で構成するグループＢと、直立刃に続く左あさり刃、右あさり刃及び左あさり刃で構成するグループＣ及び直立刃に続く右あさり刃及び左あさり刃で構成するグループＤと、で１グループを構成し、これを交互に備えてなることを特徴とする鋸刃。 Group A consisting of right and left settling blades following an upright blade, and right and left settling blades and right settling following an upright blade, as seen from a cross-sectional view with the blade portion up, with a continuous blade of equal pitch 1 group consisting of a group B composed of blades, a group C composed of a left clam blade, a right clam blade and a left clam blade following an upright blade, and a group D composed of a right clam blade and a left clam blade following an upright blade A saw blade characterized in that it is provided alternately.

等ピッチの連続刃を、刃部を上にした断面図でみて、直立刃に続く左あさり刃及び右あさり刃で構成するグループＡと、直立刃に続く左あさり刃、右あさり刃及び左あさり刃で構成するグループＢと、直立刃に続く右あさり刃、左あさり刃及び右あさり刃で構成するグループＣ及び直立刃に続く左あさり刃及び右あさり刃で構成するグループＤを連続配置した第２グループと、で１グループを構成し、これを交互に備えてなることを特徴とする鋸刃。 Group A consisting of a left and right set blade following the upright blade, and a left and right set blade and right set blade following the upright blade, as seen from a cross-sectional view with the blade portion up, with a continuous blade of equal pitch A group B composed of blades, a group C composed of a right set blade, a left set blade and a right set blade following an upright blade, and a group D formed of a left set blade and a right set blade following an upright blade are arranged in series. A saw blade comprising two groups and one group, which are alternately provided.