JPH0745012U - Band saw blade - Google Patents
Band saw bladeInfo
- Publication number
- JPH0745012U JPH0745012U JP1749693U JP1749693U JPH0745012U JP H0745012 U JPH0745012 U JP H0745012U JP 1749693 U JP1749693 U JP 1749693U JP 1749693 U JP1749693 U JP 1749693U JP H0745012 U JPH0745012 U JP H0745012U
- Authority
- JP
- Japan
- Prior art keywords
- band saw
- blade
- cutting
- cutting edge
- hard
- 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.)
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Abstract
(57)【要約】
【目的】丸材・角材、平板あるいはＨ型鋼などを高寿命
で、かつ効率的に切断可能な帯鋸を提供する。
【構成】切刃部２に硬質物質を被覆した刃先部１１を設
けるにあたり、帯鋸本体１の側面から見て少なくとも切
刃部２の刃底１０から０．２ｍｍの幅ｗをあけて刃先部
１１を設け、各刃先部を不連続とする。
(57) [Summary] [Purpose] To provide a band saw capable of efficiently cutting a round material, a square material, a flat plate, an H-shaped steel or the like with a long life. When a cutting edge portion 11 coated with a hard material is provided on the cutting edge portion 2, a width w of at least 0.2 mm is opened from a blade bottom 10 of the cutting edge portion 2 when viewed from the side surface of the band saw body 1, and the cutting edge portion 11 is formed. Is provided, and each cutting edge is discontinuous.
Description
【０００１】[0001]
この発明は、切刃部に硬質被膜を施した帯鋸に関する。特に、丸材・角材や平 鋼を扱う一般鋼材メーカ、インゴットブルームを扱う製鋼・鍛造メーカ、Ｈ型鋼 ・コラムを扱う鉄骨・橋梁メーカなどによって切断刃として広く使用されるもの である。 The present invention relates to a band saw having a hard coating on a cutting edge portion. In particular, it is widely used as a cutting blade by general steel manufacturers that handle round and square bars and flat steel, steel and forging manufacturers that handle ingot blooms, and steel frame and bridge manufacturers that handle H-shaped steel and columns.
【０００２】[0002]
帯鋸は、刃部に高速度工具鋼、そして胴部に特殊ばね鋼等を使用し、電子ビー ム溶接により接合したバイメタルバンドソーが主流となっている。これを汎用の 帯鋸盤に掛けて被削材を切断するものである。近時、被削物の高級化・難削化傾 向が進んでおり、これに伴って帯鋸の刃材も高コバルト粉末、さらには高コバル ト・高バナジウムの高級粉末高速度鋼を用いるようになってきた。さらに高硬度 材や難削材、調質鋼等の切断をする際の鋸刃の寿命向上が常に要求されている。 これに対しては、例えば特開平１−１８８２２１号公報に記載されているように 、刃底部を含めた帯鋸刃全体、あるいは刃部の底から背部側まで任意の幅をもっ て帯鋸の側面に刃部と刃部との間を連続して硬質被膜を施した帯鋸が考案されて いる。 The mainstream of band saws is a bimetal band saw that uses high-speed tool steel for the blade and special spring steel for the body, and is joined by electronic beam welding. This is applied to a general-purpose band saw to cut the work material. Recently, work pieces are becoming more sophisticated and difficult to cut, and along with this, the band saw blade material is made of high-cobalt powder and high-cobalt, high-vanadium high-grade powder high-speed steel. Has become. Furthermore, there is always a demand for longer life of the saw blade when cutting hard materials, difficult-to-cut materials, and tempered steel. To address this, for example, as described in Japanese Patent Application Laid-Open No. 1-188221, the entire band saw blade including the blade bottom part or the side face of the band saw with an arbitrary width from the bottom of the blade to the back side. A band saw has been devised in which a hard coating is continuously applied between the blade portions.
【０００３】[0003]
ところが、このような切刃部に硬質物質を被覆した帯鋸は、薄く長い帯状をな しているところから、刃先部の加工は容易ではない。さらに、硬質物質を被覆し た刃先部は、刃底から背部に向けて任意の幅で刃先全体に施されているので、硬 質物質が被覆された各刃先部は連続的に形成されているのであるから、帯鋸をホ イールに巻回して切断作業を行うと、繰り返し曲げ応力やねじり応力が帯鋸に作 用するために、疲労寿命に起因して刃底を起点とするミクロクラックが生じ、つ いには胴部を破断するに至る。 この考案は、上記のような課題に鑑み従来品に比して長寿命であり、しかも切 断時間も従来品に遜色のない帯鋸刃を提供することを目的とするものである。 However, such a band saw in which the cutting edge portion is coated with a hard substance has a thin and long band shape, and therefore, it is not easy to process the cutting edge portion. Furthermore, since the blade edge coated with a hard material is applied to the entire blade edge with an arbitrary width from the blade bottom to the back, each blade edge coated with a hard material is formed continuously. Therefore, when the band saw is wound around the wheel and the cutting operation is performed, repeated bending stress and torsional stress are applied to the band saw, resulting in microcracks originating from the blade bottom due to fatigue life. Eventually, the body part is broken. In view of the above problems, the present invention has an object to provide a band saw blade which has a longer life than conventional products and has a cutting time comparable to that of conventional products.
【０００４】[0004]
本考案は、切刃部に硬質物質を被覆した帯鋸に関し、該硬質物質の刃先部は帯 鋸本体の側面から見て少なくとも切刃部の刃底から０．２ｍｍの幅をあけて設け られ、硬質物質を被覆した各刃先部を相互に不連続に構成することによって、刃 底からのミクロクラックの発生を防止したことによって、切断効率を落とさずに 鋸刃の長寿命化を図ったのである。 The present invention relates to a band saw in which a cutting blade portion is coated with a hard material, and a cutting edge portion of the hard material is provided with a width of at least 0.2 mm from a bottom of the cutting blade portion as viewed from a side surface of the band saw body. By making the cutting edges coated with hard materials mutually discontinuous, the generation of microcracks from the blade bottom was prevented, and the life of the saw blade was extended without lowering the cutting efficiency. .
【０００５】[0005]
この考案によれば、硬質物質を被覆した刃先部を帯鋸本体の側面から見て少な くとも切刃部の刃底から０．２ｍｍの幅をあけて設け、各硬質刃先部が不連続に 構成されているのであり、このために切削中に刃先摩耗の進行が抑制され、さら に切り屑の溶着が防止されて、構成刃先が生じにくくなる。またすくい面の摩擦 抵抗が減少することから、切り屑の排出が円滑になされる。 According to this invention, the cutting edge portion coated with a hard substance is provided with a width of at least 0.2 mm from the bottom of the cutting edge portion when viewed from the side of the band saw body, and each hard cutting edge portion is discontinuous. Therefore, the progress of the wear of the cutting edge is suppressed during cutting, the welding of chips is further prevented, and the constituent cutting edge is less likely to occur. In addition, since the frictional resistance of the rake face is reduced, chips can be discharged smoothly.
【０００６】[0006]
次に、この考案の実施例を図面について説明する。図５はこの発明にかかる帯 鋸の外貌を示す斜視図である。帯鋸刃の本体１は特殊ばね鋼製であり、長手方向 両端が溶接されて無端状に形成されている。胴部１３の一側縁に連続して形成さ れた多数の切刃２ａ，２ｂ，２ｃ．．．には、図１に斜線を施して示すように、 刃底１０から少なくとも０．２ｍｍの幅Ｗをあけた位置から刃先にかけてＴｉＮ 、ＴｉＣＮ等の周期律表の第ＩＶａ〜第ＶＩａ族金属の窒化物、炭化窒化物等か ら選択された硬質物質を被覆した硬質刃先部１１が形成される。この実施例では 硬質物質を被覆した刃先部１１の始端部１５は、帯鋸刃本体１の背部４と平行な 直線となっている。その他、図２のように硬質刃先部１１ａの始端部１５ａを円 弧状にすることもできるし、図３のように硬質刃先部１１ｂの始端部１５ｂを円 弧状にし、かつ切刃２の後部側に広く硬質物質を被覆することもできる。さらに 、図４のように硬質刃先部１１ｃの始端部１５ｃを円弧状にし、かつ切刃２の前 部側に広く硬質物質を被覆することもできる。これらの各実施例においては、い ずれも所期の効果をおさめることができた。 Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 5 is a perspective view showing the outer appearance of the band saw according to the present invention. The body 1 of the band saw blade is made of special spring steel, and is welded at both ends in the longitudinal direction to form an endless shape. A large number of cutting edges 2a, 2b, 2c formed continuously on one side edge of the body portion 13. ． ． As shown by hatching in FIG. 1, nitriding of Group IVa to Group VIa metals of the periodic table such as TiN and TiCN from the position where a width W of at least 0.2 mm is opened from the blade bottom 10 to the cutting edge. To form a hard cutting edge portion 11 coated with a hard substance selected from the group consisting of materials, carbonitrides and the like. In this embodiment, the starting end portion 15 of the cutting edge portion 11 coated with a hard substance is a straight line parallel to the spine portion 4 of the band saw blade body 1. In addition, as shown in FIG. 2, the starting end portion 15a of the hard cutting edge portion 11a can be formed into an arc shape, or as shown in FIG. 3, the starting end portion 15b of the hard cutting edge portion 11b can be formed into an arc shape and the rear side of the cutting blade 2 can be formed. It is also possible to coat a wide range of hard materials. Further, as shown in FIG. 4, the starting end portion 15c of the hard cutting edge portion 11c may be formed in an arc shape, and the front side of the cutting blade 2 may be widely covered with a hard substance. In each of these examples, any desired effect could be achieved.
【０００７】 （実施例１） 切刃部用の高速度鋼と胴部用の特殊ばね鋼を溶接してなるバイメタル素材、あ るいは胴体として用いられる特殊ばね鋼を使用して板厚が１．０７ｍｍ、板幅が ３２ｍｍ、無端帯鋸長が４５７０ｍｍの帯鋸の背部４と平行に図１に示すように １インチ（２．５４ｃｍ）当たり３山の刃数の平面切刃６を設け、３枚の切刃で 一組のあさりを施し、さらにこの切刃２に上述のような硬質物質を被覆して帯鋸 を製造した。これを汎用の帯鋸盤に装着して、シリコンを７％含有するφ１００ ｍｍのアルミ合金を径方向に５ｍｍ幅に切削を行い８０個切断したところで、寿 命前であるがひとまず作業を中止した。この際の１カット当たりの切断時間は約 ５分であった。また、本考案にかかる帯鋸は切刃にあさりが設けてあるために、 切り締まりが生ずることがなく切削抵抗が多くかかることはなかった。(Example 1) A bimetal material obtained by welding high-speed steel for a cutting edge portion and a special spring steel for a body portion, or a special spring steel used as a body, has a plate thickness of 1 0.07 mm, plate width 32 mm, endless band saw length 4570 mm parallel to the back 4 of the band saw, as shown in FIG. A pair of clams was applied with the above cutting blades, and the cutting blade 2 was coated with the above-mentioned hard material to manufacture a band saw. This was mounted on a general-purpose band saw, and an aluminum alloy of φ100 mm containing 7% of silicon was radially cut into a width of 5 mm and 80 pieces were cut. The cutting time per cut at this time was about 5 minutes. Further, since the band saw according to the present invention is provided with the hook on the cutting edge, the tightening does not occur and the cutting resistance does not increase much.
【０００８】 （実施例２） 切刃部用の高速度鋼と胴部用の特殊ばね鋼を溶接してなるバイメタル素材を使 用して板厚が１．３ｍｍ、板幅が３８ｍｍ、無端帯鋸長が５３００ｍｍの帯鋸の 背部４と平行に図１に示すように、１インチ（２．５４ｃｍ）当たり２〜３山の 刃数の不等ピッチ刃形を設け、７枚の切刃で一組のアサリを施し、さらにこの切 刃に上述のような周期律表の第ＩＶａ〜ＶＩａ族金属の窒化物、炭化窒化物から 選ばれた硬質物質、例えばＴｉＮを図２に示す硬質刃先部１１ａのパターンに被 覆帯鋸を製造した。切削機能は硬質物被覆物の有無に関わらず、双方とも刃先の 正常摩耗による切り曲がり寿命であった。しかし刃先に硬質物被覆を施していな い従来の帯鋸刃３１カットであるのに対し、本発明は７５カットであった。この ため本発明品は約２．４倍に寿命向上した結果が得られた。(Example 2) A plate thickness of 1.3 mm, a plate width of 38 mm, and an endless band saw using a bimetal material obtained by welding high-speed steel for the cutting edge portion and special spring steel for the body portion As shown in Fig. 1, parallel to the spine 4 of the band saw having a length of 5300 mm, an unequal pitch blade shape with 2 to 3 teeth per inch (2.54 cm) was provided, and a set of 7 cutting blades Then, a hard material selected from the group IVa to VIa group metal nitrides and carbonitrides of the periodic table as described above, such as TiN, is applied to the cutting edge of the hard cutting edge 11a shown in FIG. A band saw was manufactured into a pattern. The cutting function, regardless of the presence or absence of a hard coating, had a bending life due to normal wear of the cutting edge. However, in contrast to the conventional 31-band band saw blade in which the hard edge is not coated, the present invention has 75 cuts. As a result, the product of the present invention has a life of about 2.4 times longer.
【０００９】 （試験結果） 被削材：ＳＫＤ６１鋼φ３００ｍｍ丸棒 切削速度：４０ｍ／ｍｉｎ 切削率：２０ｃｍ／ｍｉｎ(Test Results) Work Material: SKD61 Steel φ300 mm Round Bar Cutting Speed: 40 m / min Cutting Rate: 20 cm / min
【００１０】 （実施例３） 切刃２の材質を粉末高速度鋼、胴部１３を特殊ばね鋼とし、鋸幅３２ｍｍ、鋸 厚１．０７ｍｍ、鋸刃のピッチを１インチ（２．５４ｃｍ）あたり３山のとし、 切刃２の側面に周期律表の第ＩＶａ〜ＶＩａ族金属の窒化物、炭化窒化物から選 んだ硬質物質例えばＴｉＮを、図３に示す硬質刃先部１１ｂのパターンに被覆し た帯鋸を製作し、以下に示す条件にて切削試験を行ったところ、切削中に帯鋸を 支えているアーム部に装着された硬質インサートと帯鋸側面とは干渉せず、ステ ッキング現象は起こらなかった。また、刃底を起点とするミクロクラックも発見 できなかった。切削性能は硬質被覆物の被覆処理を施していない従来の帯鋸の場 合には４７カットであるのに対し、本発明品では１２８カットが実現した。この ため本発明品によれば、約２．７倍に寿命が向上したことが分かる。(Embodiment 3) The material of the cutting blade 2 is powder high-speed steel, the body 13 is special spring steel, the saw width is 32 mm, the saw thickness is 1.07 mm, and the pitch of the saw blade is 1 inch (2.54 cm). In the pattern of the hard cutting edge 11b shown in FIG. When a coated band saw was manufactured and a cutting test was performed under the following conditions, the hard insert mounted on the arm supporting the band saw during cutting did not interfere with the side surface of the band saw, and the sticking phenomenon did not occur. It didn't happen. In addition, no microcracks starting from the blade bottom were found. The cutting performance is 47 cuts in the case of the conventional band saw in which the hard coating is not applied, whereas the cutting performance of the present invention is 128 cuts. Therefore, according to the product of the present invention, it is understood that the life is improved by about 2.7 times.
【００１１】 （試験結果） 被削材：ステンレス鋼φ２００ｍｍ丸棒 切削速度：２７〜３５ｍ／ｍｉｎ 切削率：１８ｃｍ／ｍｉｎ(Test Results) Work Material: Stainless Steel φ200 mm Round Bar Cutting Speed: 27 to 35 m / min Cutting Rate: 18 cm / min
【００１２】[0012]
本考案は切刃部に硬質物質を被覆した帯鋸であって、該刃先部は帯鋸本体の側 面から見て少なくとも切刃部の刃底から０．２ｍｍの幅をあけて設けられ、各刃 先部の硬質物質を被覆した部分を不連続に構成したのであるから、繰り返し曲げ 応力による疲労寿命への影響が無くなり、胴部破断が減少し、鋸刃全体が従来の バイメタル帯鋸刃に比して、２．４倍から２．７倍の寿命が得られた。このため に、きわめて経済的な加工が可能となった。 The present invention is a band saw in which a cutting blade portion is coated with a hard material, the cutting edge portion being provided with a width of at least 0.2 mm from the blade bottom of the cutting blade portion when viewed from the side surface of the band saw body. Since the part of the tip covered with hard material is discontinuous, the fatigue life is not affected by repeated bending stress, body breakage is reduced, and the saw blade as a whole is compared to conventional bimetal band saw blades. Thus, a life of 2.4 times to 2.7 times was obtained. This has enabled extremely economical processing.
【提出日】平成５年１０月１４日[Submission date] October 14, 1993
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】全文[Correction target item name] Full text
【補正方法】変更[Correction method] Change
【０００１】[0001]
この考案は、切刃部に硬質被膜を施した帯鋸に関する。特に、丸材・角材や平 鋼を扱う一般鋼材メーカ、インゴットブルームを扱う製鋼・鍛造メーカ、Ｈ型鋼 ・コラムを扱う鉄骨・橋梁メーカなどによって切断刃として広く使用されるもの である。This invention relates to a bandsaw subjected to hard coating to the cutting edge. In particular, it is widely used as a cutting blade by general steel manufacturers that handle round and square bars and flat steel, steel and forging manufacturers that handle ingot blooms, and steel frame and bridge manufacturers that handle H-shaped steel and columns.
【０００２】[0002]
帯鋸は、刃部に高速度工具鋼、そして胴部に特殊ばね鋼等を使用し、電子ビー ム溶接により接合したバイメタルバンドソーが主流となっている。これを汎用の 帯鋸盤に掛けて被削材を切断するものである。近時、被削物の高級化・難削化傾 向が進んでおり、これに伴って帯鋸の刃材も高コバルト粉末、さらには高コバル ト・高バナジウムの高級粉末高速度鋼を用いるようになってきた。さらに高硬度 材や難削材、調質鋼等の切断をする際の鋸刃の寿命向上が常に要求されている。 これに対しては、例えば特開平１−１８８２２１号公報に記載されているように 、刃底部を含めた帯鋸刃全体、あるいは刃部の底から背部側まで任意の幅をもっ て帯鋸の側面に刃部と刃部との間を連続して硬質被膜を施した帯鋸が考案されて いる。 The mainstream of band saws is a bimetal band saw that uses high-speed tool steel for the blade and special spring steel for the body, and is joined by electronic beam welding. This is applied to a general-purpose band saw to cut the work material. Recently, work pieces are becoming more sophisticated and difficult to cut, and along with this, the band saw blade material is made of high-cobalt powder and high-cobalt, high-vanadium high-grade powder high-speed steel. Has become. Furthermore, there is always a demand for longer life of the saw blade when cutting hard materials, difficult-to-cut materials, and tempered steel. To address this, for example, as described in Japanese Patent Application Laid-Open No. 1-188221, the entire band saw blade including the blade bottom part or the side face of the band saw with an arbitrary width from the bottom of the blade to the back side. A band saw has been devised in which a hard coating is continuously applied between the blade portions.
【０００３】[0003]
ところが、このような切刃部に硬質物質を被覆した帯鋸は、薄く長い帯状をな しているところから、刃先部の加工は容易ではない。さらに、硬質物質を被覆し た刃先部は、刃底から背部に向けて任意の幅で刃先全体に施されているので、硬 質物質が被覆された各刃先部は連続的に形成されているのであるから、帯鋸をホ イールに巻回して切断作業を行うと、繰り返し曲げ応力やねじり応力が帯鋸に作 用するために、疲労寿命に起因して刃底を起点とするミクロクラックが生じ、つ いには胴部を破断するに至る。 この考案は、上記のような課題に鑑み従来品に比して長寿命であり、しかも切 断時間も従来品に遜色のない帯鋸刃を提供することを目的とするものである。 However, such a band saw in which the cutting edge portion is coated with a hard substance has a thin and long band shape, and therefore, it is not easy to process the cutting edge portion. Furthermore, since the blade edge coated with a hard material is applied to the entire blade edge with an arbitrary width from the blade bottom to the back, each blade edge coated with a hard material is formed continuously. Therefore, when the band saw is wound around the wheel and the cutting operation is performed, repeated bending stress and torsional stress are applied to the band saw, resulting in microcracks originating from the blade bottom due to fatigue life. Eventually, the body part is broken. In view of the above problems, the present invention has an object to provide a band saw blade which has a longer life than conventional products and has a cutting time comparable to that of conventional products.
【０００４】[0004]
本考案は、切刃部に硬質物質を被覆した帯鋸に関し、該硬質物質の刃先部は帯 鋸本体の側面から見て少なくとも切刃部の刃底から０．２ｍｍの幅をあけて設け られ、硬質物質を被覆した各刃先部を相互に不連続に構成することによって、刃 底からのミクロクラックの発生を防止したことによって、切断効率を落とさずに 鋸刃の長寿命化を図ったのである。 The present invention relates to a band saw in which a cutting blade portion is coated with a hard material, and a cutting edge portion of the hard material is provided with a width of at least 0.2 mm from a bottom of the cutting blade portion as viewed from a side surface of the band saw body. By making the cutting edges coated with hard materials mutually discontinuous, the generation of microcracks from the blade bottom was prevented, and the life of the saw blade was extended without lowering the cutting efficiency. .
【０００５】[0005]
この考案によれば、硬質物質を被覆した刃先部を帯鋸本体の側面から見て少な くとも切刃部の刃底から０．２ｍｍの幅をあけて設け、各硬質刃先部が不連続に 構成されているのであり、このために切削中に刃先摩耗の進行が抑制され、さら に切り屑の溶着が防止されて、構成刃先が生じにくくなる。またすくい面の摩擦 抵抗が減少することから、切り屑の排出が円滑になされる。 According to this invention, the cutting edge portion coated with a hard substance is provided with a width of at least 0.2 mm from the bottom of the cutting edge portion when viewed from the side of the band saw body, and each hard cutting edge portion is discontinuous. Therefore, the progress of the wear of the cutting edge is suppressed during cutting, the welding of chips is further prevented, and the constituent cutting edge is less likely to occur. In addition, since the frictional resistance of the rake face is reduced, chips can be discharged smoothly.
【０００６】[0006]
次に、この考案の実施例を図面について説明する。図５はこの考案にかかる帯 鋸の外貌を示す斜視図である。帯鋸刃の本体１は特殊ばね鋼製であり、長手方向 両端が溶接されて無端状に形成されている。胴部１３の一側縁に連続して形成さ れた多数の切刃２ａ，２ｂ，２ｃ．．．には、図１に斜線を施して示すように、 刃底１０から少なくとも０．２ｍｍの幅Ｗをあけた位置から刃先にかけてＴｉＮ 、ＴｉＣＮ等の周期律表の第ＩＶａ〜第ＶＩａ族金属の窒化物、炭化窒化物等か ら選択された硬質物質を被覆した硬質刃先部１１が形成される。この実施例では 硬質物質を被覆した刃先部１１の始端部１５は、帯鋸刃本体１の背部４と平行な 直線となっている。その他、図２のように硬質刃先部１１ａの始端部１５ａを円 弧状にすることもできるし、図３のように硬質刃先部１１ｂの始端部１５ｂを円 弧状にし、かつ切刃２の後部側に広く硬質物質を被覆することもできる。さらに 、図４のように硬質刃先部１１ｃの始端部１５ｃを円弧状にし、かつ切刃２の前 部側に広く硬質物質を被覆することもできる。これらの各実施例においては、い ずれも所期の効果をおさめることができた。Next, an embodiment of the present invention will be described with reference to the drawings. Figure 5 is a perspective view showing a Gaibo band saw according to this invention. The body 1 of the band saw blade is made of special spring steel, and is welded at both ends in the longitudinal direction to form an endless shape. A large number of cutting edges 2a, 2b, 2c formed continuously on one side edge of the body portion 13. ． ． As shown by hatching in FIG. 1, nitriding of Group IVa to Group VIa metals of the periodic table such as TiN and TiCN from the position where a width W of at least 0.2 mm is opened from the blade bottom 10 to the cutting edge. To form a hard cutting edge portion 11 coated with a hard substance selected from the group consisting of materials, carbonitrides and the like. In this embodiment, the starting end portion 15 of the cutting edge portion 11 coated with a hard substance is a straight line parallel to the spine portion 4 of the band saw blade body 1. In addition, as shown in FIG. 2, the starting end portion 15a of the hard cutting edge portion 11a can be formed into an arc shape, or the starting end portion 15b of the hard cutting edge portion 11b can be formed into an arc shape as shown in FIG. It is also possible to coat a wide range of hard materials. Further, as shown in FIG. 4, the starting end portion 15c of the hard cutting edge portion 11c may be formed in an arc shape, and the front side of the cutting blade 2 may be widely covered with a hard substance. In each of these examples, any desired effect could be achieved.
【０００７】 （実施例１） 切刃部用の高速度鋼と胴部用の特殊ばね鋼を溶接してなるバイメタル素材、あ るいは胴体として用いられる特殊ばね鋼を使用して板厚が１．０７ｍｍ、板幅が ３２ｍｍ、無端帯鋸長が４５７０ｍｍの帯鋸の背部４と平行に図１に示すように １インチ（２．５４ｃｍ）当たり３山の刃数の平面切刃６を設け、３枚の切刃で 一組のあさりを施し、さらにこの切刃２に上述のような硬質物質を被覆して帯鋸 を製造した。これを汎用の帯鋸盤に装着して、シリコンを７％含有するφ１００ ｍｍのアルミ合金を径方向に５ｍｍ幅に切削を行い８０個切断したところで、寿 命前であるがひとまず作業を中止した。この際の１カット当たりの切断時間は約 ５分であった。また、本考案にかかる帯鋸は切刃にあさりが設けてあるために、 切り締まりが生ずることがなく切削抵抗が多くかかることはなかった。(Example 1) A bimetal material obtained by welding high-speed steel for a cutting edge portion and a special spring steel for a body portion, or a special spring steel used as a body, has a plate thickness of 1 0.07 mm, plate width 32 mm, endless band saw length 4570 mm parallel to the back 4 of the band saw, as shown in FIG. A pair of clams was applied with the above cutting blades, and the cutting blade 2 was coated with the above-mentioned hard material to manufacture a band saw. This was mounted on a general-purpose band saw, and an aluminum alloy of φ100 mm containing 7% of silicon was radially cut into a width of 5 mm and 80 pieces were cut. The cutting time per cut at this time was about 5 minutes. Further, since the band saw according to the present invention is provided with the hook on the cutting edge, the tightening does not occur and the cutting resistance does not increase much.
【０００８】 （実施例２） 切刃部用の高速度鋼と胴部用の特殊ばね鋼を溶接してなるバイメタル素材を使 用して板厚が１．３ｍｍ、板幅が３８ｍｍ、無端帯鋸長が５３００ｍｍの帯鋸の 背部４と平行に図１に示すように、１インチ（２．５４ｃｍ）当たり２〜３山の 刃数の不等ピッチ刃形を設け、７枚の切刃で一組のアサリを施し、さらにこの切 刃に上述のような周期律表の第ＩＶａ〜ＶＩａ族金属の窒化物、炭化窒化物から 選ばれた硬質物質、例えばＴｉＮを図２に示す硬質刃先部１１ａのパターンに被 覆帯鋸を製造した。切削機能は硬質物被覆物の有無に関わらず、双方とも刃先の 正常摩耗による切り曲がり寿命であった。しかし刃先に硬質物被覆を施していな い従来の帯鋸刃３１カットであるのに対し、本考案は７５カットであった。この ため本考案品は約２．４倍に寿命向上した結果が得られた。(Example 2) A plate thickness of 1.3 mm, a plate width of 38 mm, and an endless band saw using a bimetal material obtained by welding high-speed steel for the cutting edge portion and special spring steel for the body portion As shown in Fig. 1, parallel to the spine 4 of the band saw having a length of 5300 mm, an unequal pitch blade shape with 2 to 3 threads per inch (2.54 cm) is provided, and a set of 7 cutting blades is provided. Then, a hard material selected from the group IVa to VIa group metal nitrides and carbonitrides of the periodic table as described above, such as TiN, is applied to the cutting edge of the hard cutting edge 11a shown in FIG. A band saw was manufactured into a pattern. The cutting function, regardless of the presence or absence of a hard coating, had a bending life due to normal wear of the cutting edge. But while a hard material have coatings such have been made conventional band saw blade 31 cuts the cutting edge, the present invention was 75 cut. Thus the present invention product result of life improved was obtained about 2.4 times.
【０００９】 （試験結果） 被削材：ＳＫＤ６１鋼φ３００ｍｍ丸棒 切削速度：４０ｍ／ｍｉｎ 切削率：２０ｃｍ／ｍｉｎ(Test Results) Work Material: SKD61 Steel φ300 mm Round Bar Cutting Speed: 40 m / min Cutting Rate: 20 cm / min
【００１０】 （実施例３） 切刃２の材質を粉末高速度鋼、胴部１３を特殊ばね鋼とし、鋸幅３２ｍｍ、鋸 厚１．０７ｍｍ、鋸刃のピッチを１インチ（２．５４ｃｍ）あたり３山のとし、 切刃２の側面に周期律表の第ＩＶａ〜ＶＩａ族金属の窒化物、炭化窒化物から選 んだ硬質物質例えばＴｉＮを、図３に示す硬質刃先部１１ｂのパターンに被覆し た帯鋸を製作し、以下に示す条件にて切削試験を行ったところ、切削中に帯鋸を 支えているアーム部に装着された硬質インサートと帯鋸側面とは干渉せず、ステ ッキング現象は起こらなかった。また、刃底を起点とするミクロクラックも発見 できなかった。切削性能は硬質被覆物の被覆処理を施していない従来の帯鋸の場 合には４７カットであるのに対し、本考案品では１２８カットが実現した。この ため本考案品によれば、約２．７倍に寿命が向上したことが分かる。(Embodiment 3) The material of the cutting blade 2 is powder high-speed steel, the body 13 is special spring steel, the saw width is 32 mm, the saw thickness is 1.07 mm, and the pitch of the saw blade is 1 inch (2.54 cm). There are three peaks, and on the side surface of the cutting edge 2, a hard material such as TiN selected from nitrides and carbonitrides of Group IVa to VIa metals of the periodic table is formed into the pattern of the hard edge part 11b shown in FIG. When a coated band saw was manufactured and a cutting test was performed under the following conditions, the hard insert attached to the arm supporting the band saw during cutting did not interfere with the side surface of the band saw, and the sticking phenomenon did not occur. It didn't happen. In addition, no microcracks starting from the blade bottom were found. Cutting performance whereas in case of the conventional band saw not subjected to coating treatment of the hard coating is 47 cut 128 cut was realized in the present invention product. Therefore, according to the present invention product, it can be seen that the life was improved about 2.7 times.
【００１１】 （試験結果） 被削材：ステンレス鋼φ２００ｍｍ丸棒 切削速度：２７〜３５ｍ／ｍｉｎ 切削率：１８ｃｍ／ｍｉｎ(Test Results) Work Material: Stainless Steel φ200 mm Round Bar Cutting Speed: 27 to 35 m / min Cutting Rate: 18 cm / min
【００１２】[0012]
本考案は切刃部に硬質物質を被覆した帯鋸であって、該刃先部は帯鋸本体の側 面から見て少なくとも切刃部の刃底から０．２ｍｍの幅をあけて設けられ、各刃 先部の硬質物質を被覆した部分を不連続に構成したのであるから、繰り返し曲げ 応力による疲労寿命への影響が無くなり、胴部破断が減少し、鋸刃全体が従来の バイメタル帯鋸刃に比して、２．４倍から２．７倍の寿命が得られた。このため に、きわめて経済的な加工が可能となった。 The present invention is a band saw in which a cutting blade portion is coated with a hard material, the cutting edge portion being provided with a width of at least 0.2 mm from the blade bottom of the cutting blade portion when viewed from the side surface of the band saw body. Since the part of the tip covered with hard material is discontinuous, the fatigue life is not affected by repeated bending stress, body breakage is reduced, and the saw blade as a whole is compared to conventional bimetal band saw blades. Thus, a life of 2.4 times to 2.7 times was obtained. This has enabled extremely economical processing.
【図１】イはこの考案の実施例の部分側面図、ロは一刃
の詳細図である。1A is a partial side view of an embodiment of the present invention, and FIG. 1B is a detailed view of a single blade.
【図２】イはこの考案の他の実施例の部分側面図、ロは
一刃の詳細図である。2A is a partial side view of another embodiment of the present invention, and FIG. 2B is a detailed view of a single blade.
【図３】イはこの考案のさらに他の実施例の部分側面
図、ロは一刃の詳細図である。FIG. 3A is a partial side view of still another embodiment of the present invention, and FIG. 3B is a detailed view of a single blade.
【図４】イはこの発明のさらに別の実施例の部分側面
図、ロは一刃の詳細図である。4A is a partial side view of yet another embodiment of the present invention, and FIG. 4B is a detailed view of a single blade.
【図５】この発明に係る帯鋸の斜視図である。FIG. 5 is a perspective view of a band saw according to the present invention.
１ 帯鋸刃本体 ２ 切刃 ３ 刃溝 ４ 背部 ５ 刃先 １０ 刃底 １１ 硬質物質を被覆した刃先部 １３ 胴部 １５ 始端部 α 外周二番角 ｗ 幅 1 Band Saw Blade Main Body 2 Cutting Edge 3 Blade Groove 4 Back 5 Blade Edge 10 Blade Bottom 11 Blade Edge Covered with Hard Material 13 Body 15 Starting Edge α Peripheral Double Angle w Width
【手続補正書】[Procedure amendment]
【提出日】平成５年１０月１４日[Submission date] October 14, 1993
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】全文[Correction target item name] Full text
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【書類名】 明細書[Document name] Statement
【考案の名称】 帯鋸刃[Name of device] Band saw blade
【実用新案登録請求の範囲】[Scope of utility model registration request]
【図面の簡単な説明】[Brief description of drawings]
【図１】イはこの考案の実施例の部分側面図、ロは一刃
の詳細図である。1A is a partial side view of an embodiment of the present invention, and FIG. 1B is a detailed view of a single blade.
【図２】イはこの考案の他の実施例の部分側面図、ロは
一刃の詳細図である。2A is a partial side view of another embodiment of the present invention, and FIG. 2B is a detailed view of a single blade.
【図３】イはこの考案のさらに他の実施例の部分側面
図、ロは一刃の詳細図である。FIG. 3A is a partial side view of still another embodiment of the present invention, and FIG. 3B is a detailed view of a single blade.
【図４】イはこの考案のさらに別の実施例の部分側面
図、ロは一刃の詳細図である。[4] Lee is partial side view of yet another embodiment of the invention, b is a detail view of Ichiha.
【図５】この考案に係る帯鋸の斜視図である。5 is a perspective view of a band saw according to this invention.
【符号の説明】 １ 帯鋸刃本体 ２ 切刃 ３ 刃溝 ４ 背部 ５ 刃先 １０ 刃底 １１ 硬質物質を被覆した刃先部 １３ 胴部 １５ 始端部 α 外周二番角 ｗ 幅[Explanation of symbols] 1 band saw blade main body 2 cutting edge 3 blade groove 4 back part 5 blade edge 10 blade bottom 11 blade edge part 13 coated with a hard substance 13 body part 15 starting end part α outer peripheral double angle w width
Claims (3)
て、該硬質物質を被覆した刃先部は帯鋸本体の側面から
見て少なくとも切刃部の刃底から０．２ｍｍの幅をあけ
て設けられ、各硬質刃先部が不連続に構成されているこ
とを特徴とする帯鋸刃。1. A band saw having a cutting edge portion coated with a hard material, wherein the cutting edge portion coated with the hard material is provided with a width of at least 0.2 mm from the bottom of the cutting edge portion when viewed from the side of the band saw body. The band saw blade is characterized in that each of the hard cutting edges is discontinuous.
〜ＶＩａ族金属の炭化物、窒化物、または炭窒化物にて
被覆されている請求項１記載の帯鋸刃。2. The hard edge portion has a periodic table IVa
The band saw blade according to claim 1, which is coated with a carbide, a nitride, or a carbonitride of a Group VIa metal.
平行に切除された請求項１又は２記載の帯鋸刃。3. The band saw blade according to claim 1, wherein the flat cutting edge is cut parallel to the back surface of the band saw blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1993017496U JP2603622Y2 (en) | 1993-03-17 | 1993-03-17 | Band saw blade |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1993017496U JP2603622Y2 (en) | 1993-03-17 | 1993-03-17 | Band saw blade |
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| Publication Number | Publication Date |
|---|---|
| JPH0745012U true JPH0745012U (en) | 1995-12-12 |
| JP2603622Y2 JP2603622Y2 (en) | 2000-03-15 |
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|---|---|---|---|
| JP1993017496U Expired - Fee Related JP2603622Y2 (en) | 1993-03-17 | 1993-03-17 | Band saw blade |
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|---|---|
| JP (1) | JP2603622Y2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4662257B2 (en) * | 2005-08-31 | 2011-03-30 | 株式会社不二越 | Band saw blade |
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1993
- 1993-03-17 JP JP1993017496U patent/JP2603622Y2/en not_active Expired - Fee Related
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| JP2603622Y2 (en) | 2000-03-15 |
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