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JP5865439B2 - Band saw blade manufacturing method - Google Patents

Band saw blade manufacturing method Download PDF

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Publication number
JP5865439B2
JP5865439B2 JP2014130986A JP2014130986A JP5865439B2 JP 5865439 B2 JP5865439 B2 JP 5865439B2 JP 2014130986 A JP2014130986 A JP 2014130986A JP 2014130986 A JP2014130986 A JP 2014130986A JP 5865439 B2 JP5865439 B2 JP 5865439B2
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tooth
saw blade
band saw
teeth
right set
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JP2014168847A (en
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堀口 勝弘
勝弘 堀口
辻本 晋
晋 辻本
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Amada Co Ltd
Amada Machine Tools Co Ltd
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Amada Machine Tools Co Ltd
Amada Holdings Co Ltd
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Description

本発明は、帯鋸刃の製造方法に係り、さらに詳細には、左右のアサリ歯における歯先の稜線を、帯鋸刃の走行方向及び切込み方向に対して直交する方向に形成した帯鋸刃の製造方法に関する。 The present invention relates to a method for manufacturing a band saw blade, and more specifically, a method for manufacturing a band saw blade in which ridge lines of tooth tips in left and right set teeth are formed in a direction perpendicular to the traveling direction and the cutting direction of the band saw blade . About.

従来より、例えば金属製の大きなワークピースを切断する装置として、帯鋸盤が使用されている。この帯鋸盤に使用される帯鋸刃は、材質的には、高速度工具鋼や超硬合金を刃先に、強靱性合金鋼を胴部に使用した、いわゆるバイメタル帯鋸刃が、多く使用されている。   Conventionally, a band saw machine has been used as an apparatus for cutting a large workpiece made of metal, for example. The band saw blade used in this band saw machine is often a so-called bimetal band saw blade that uses high-speed tool steel or cemented carbide as the cutting edge and tough alloy steel as the body. .

歯先に高速度工具鋼を使用した帯鋸刃の場合は、バイメタル状の原材料を用いて、歯切り加工を行い、その後にアサリの振り出し加工を行うのが一般的である。   In the case of a band saw blade using high-speed tool steel for the tooth tip, it is common to perform gear cutting using a bimetallic raw material and then to perform clam swinging.

また、歯先に超硬合金を使用した帯鋸刃の場合は、アサリの振り出し加工(曲げ加工)を行うものと、アサリの振り出し加工を行わずに、研摩加工にて、超硬チップを撥形状に形成して、アサリに相当するクリアランスを設けるものがある。   In the case of a band saw blade that uses cemented carbide at the tip of the tooth, the carbide tip is repelled by polishing without the clashes being drawn (bending) or by polishing. In some cases, a clearance corresponding to a clam is provided.

歯先に超硬合金を使用したアサリの振り出し加工を行うタイプの帯鋸刃では、ガレットが形成された台金と呼ばれる原材料を用いて、歯先となる部分に超硬合金のチップを接合した後に、側面、逃げ面、スクイ面などの研摩加工を行い、その後に、アサリの振り出し加工を行うのが一般的である。   In the type of band saw blade that uses a cemented carbide on the tip of a tooth, the material is called a base metal on which a galette is formed, and then a cemented carbide tip is joined to the tooth tip. In general, the side surface, the flank surface, the squeeze surface, and the like are polished, and then the claws are swung out.

なお、本発明に関係すると思われる文献として特許文献1がある。   In addition, there exists patent document 1 as a literature considered to be related to this invention.

特開平6−155158号公報JP-A-6-155158

前記特許文献1に記載の帯鋸刃1は、図1に示すごとき構成である。すなわち、帯鋸刃1は、帯状の胴部材3の一側に、直歯5、右方向にアサリの振り出し加工を行った右アサリ歯7及び左アサリ歯9を備えた構成である。そして、前記直歯5及び左右のアサリ歯7、9の歯先には、例えば超硬合金などの硬質の材料からなる切削チップ(歯先チップ)11、13、15が溶接等によって一体的に備えられている。   The band saw blade 1 described in Patent Document 1 has a configuration as shown in FIG. That is, the band saw blade 1 has a configuration in which a straight tooth 5, a right set tooth 7 and a left set tooth 9 in which a set-out process is performed in the right direction are provided on one side of the band-shaped body member 3. Further, cutting tips (tooth tip tips) 11, 13, 15 made of a hard material such as cemented carbide are integrally formed by welding or the like on the tooth tips of the straight tooth 5 and the left and right set teeth 7 and 9, for example. Is provided.

前記直歯5に備えた歯先チップ(切削チップ)11は、左右両側に傾斜面を形成したベベル歯に形成してある。左右のアサリ歯7、9における歯先チップ13、15の歯先の稜線13A、15Aはそれぞれ左右方向にβ度傾斜してある。前記歯先チップ13、15の各歯先稜線13A、15Aは、帯鋸刃1の走行方向から見て、図1に示すように、前記直歯5における歯先チップ11の左右のベベル部稜線11Aの上部付近を横断している。そして、前記歯先チップ13、15のそれぞれの内側コーナー部13B、15Bは、前記直歯5の歯先チップ11における歯先稜線11Bより寸法aだけ小さく形成してある。換言すれば、左右のアサリ歯7、9の歯高寸法(基準位置から歯先までの高さ寸法)は直歯5の歯高寸法より小さなものである。   A tooth tip (cutting tip) 11 provided on the straight tooth 5 is formed as a bevel tooth having inclined surfaces on both the left and right sides. The ridge lines 13A and 15A of the tooth tips 13 and 15 of the left and right set teeth 7 and 9 are inclined by β degrees in the left and right direction, respectively. The tooth tip ridge lines 13A and 15A of the tooth tip chips 13 and 15 are seen from the traveling direction of the band saw blade 1, as shown in FIG. Crossing near the top of The inner corner portions 13B and 15B of the tooth tip chips 13 and 15 are formed smaller than the tooth tip ridge line 11B of the tooth tip tip 11 of the straight tooth 5 by a dimension a. In other words, the tooth height dimension (height dimension from the reference position to the tooth tip) of the left and right set teeth 7 and 9 is smaller than the tooth height dimension of the straight tooth 5.

ところで、左右のアサリ歯7、9のアサリ振り出し加工を行うとき、左右のアサリ歯7、9のコーナー部13B、15Bが、傾斜βにより、歯先チップ11の歯先稜線11Bに近づき、場合によっては、前記歯先チップ13、15の内側コーナー部13B、15Bが歯先チップ11の歯先稜線11Bから突出することがある。したがって、左右のアサリ歯7、9のアサリ振り出し加工を行う前には、左右のアサリ歯7、9を、直歯5よりも歯高寸法を予め寸法cだけ小さく加工する必要があるものである。   By the way, when the left and right set teeth 7 and 9 are set out, the corner portions 13B and 15B of the left and right set teeth 7 and 9 approach the addendum ridge line 11B of the addendum tip 11 due to the inclination β. The inner corner portions 13B and 15B of the tooth tip 13 and 15 may protrude from the tooth tip ridge line 11B of the tooth tip 11. Therefore, before the left and right set teeth 7 and 9 are set out, the left and right set teeth 7 and 9 need to be processed in advance so that the tooth height dimension is smaller than the straight teeth 5 by the dimension c. .

上記構成のごとく、直歯5がベベル歯である場合には、左右のアサリ歯7、9における内側コーナー部13B、15Bが、帯鋸刃1の走行方向から見たときに、直歯5の歯先稜線11Bから突出しないことが重要である。左右のアサリ歯7、9の内側コーナー部13B、15Bが直歯5の歯先稜線11Bから突出した構成においては、直歯5に比較して左右のアサリ歯7、9における内側コーナー部13B、15Bが先行してワークに切り込むこととなり、内側コーナー部13B、15Bに作用する左右方向の分力によって切り曲りを生じ易くなるものである。   When the straight tooth 5 is a bevel tooth as in the above configuration, the inner corner portions 13B and 15B of the left and right set teeth 7 and 9 have the teeth of the straight tooth 5 when viewed from the traveling direction of the band saw blade 1. It is important not to protrude from the leading edge line 11B. In the configuration in which the inner corner portions 13B and 15B of the left and right set teeth 7 and 9 protrude from the tooth tip ridge line 11B of the straight tooth 5, the inner corner portions 13B of the left and right set teeth 7 and 9 compared to the straight tooth 5, 15B precedes and cuts into the workpiece, and the bending easily occurs due to the lateral force acting on the inner corner portions 13B and 15B.

また、前記構成の帯鋸刃1においては、ベベル歯である直歯5における左右のベベル部稜線11Aを、左右のアサリ歯7、9における歯先稜線13A、15Aが横断していることが重要である。すなわち、左右のベベル部稜線11Aの上端11Cよりも上側を、左右のアサリ歯7、9の歯先稜線13A、15Aが横断する構成の場合には、左右のアサリ歯7、9に比較して直歯5であるベベル歯の働きが大きくなり、帯鋸刃1によって切削される切削溝の幅方向の分割が不均衡になり、切り曲りを生じ易くなるものである。   In the band saw blade 1 having the above-described configuration, it is important that the left and right bevel portion ridge lines 11A of the straight teeth 5 that are bevel teeth cross the tooth tip ridge lines 13A and 15A of the left and right set teeth 7 and 9. is there. That is, in the case of the configuration in which the tooth tip ridge lines 13A and 15A of the left and right set teeth 7 and 9 cross the upper end 11C of the left and right bevel portion ridge lines 11A, compared to the left and right set teeth 7 and 9, respectively. The function of the bevel tooth which is the straight tooth 5 is increased, the division of the cutting groove cut by the band saw blade 1 in the width direction becomes unbalanced, and the bending is likely to occur.

ところで、前記帯鋸刃1を左右方向から見た側面図および歯先側から見た底面図で表わすと、図2(A)、(B)のごとく表わすことができる。すなわち、左右のアサリ歯7、9は直歯5よりも予め寸法cだけ小さく形成し、左右のアサリ振り出し加工により、高低差aになるものであるから、左右のアサリ歯7、9における歯先稜線13A、15Aには自然に横掬い角αが付くことになる。すなわち、前記歯先稜線13A、15Aは、帯鋸刃1の走行方向(矢印A方向)に対して、内側コーナー部13B、15Bよりも外側コーナー部13C、15Cが後側(図2(B)において左側)になるように傾斜することになる。したがって、左右のアサリ歯7、9における歯先稜線13A、15Aは、前記横掬い角αと歯線傾き角βの傾斜を有することになる。   By the way, when the band saw blade 1 is represented by a side view seen from the left-right direction and a bottom view seen from the tooth tip side, it can be represented as shown in FIGS. That is, the left and right set teeth 7 and 9 are formed to be smaller than the straight tooth 5 in advance by the dimension c, and the height difference a is obtained by the left and right set out operations. The ridgelines 13A and 15A are naturally provided with a side angle α. In other words, the tooth tip ridge lines 13A and 15A are arranged such that the outer corner portions 13C and 15C are located on the rear side (FIG. 2B) with respect to the traveling direction (arrow A direction) of the band saw blade 1 than the inner corner portions 13B and 15B. (Left side) Therefore, the tooth tip ridge lines 13A and 15A in the left and right set teeth 7 and 9 have the inclinations of the side angle α and the tooth line inclination angle β.

前記帯鋸刃1を実際的な帯鋸刃に適用するにあたり、図3に示すように、胴部材3の厚さを1.3mm、直歯5であるベベル歯の歯先稜線11Bの寸法を0.7mmベベル部稜線11Aの傾斜角を45°、左右のアサリ歯7、9のアサリ振り出し量を0.4mmと想定すると、例えば右アサリ歯7における内側コーナー部13Bが直歯5の歯先稜線11Bから突出しないようにするには、アサリ振り出し加工を行う前における左右のアサリ歯7、9と直歯5との歯高寸法の差すなわち前記寸法cを0.06mmにする必要がある。   In applying the band saw blade 1 to an actual band saw blade, as shown in FIG. 3, the thickness of the body member 3 is 1.3 mm, and the dimensions of the tip edge line 11B of the bevel tooth which is the straight tooth 5 are set to 0. Assuming that the inclination angle of the 7 mm bevel ridge line 11 </ b> A is 45 ° and the amount of clashes of the left and right set teeth 7, 9 is 0.4 mm, for example, the inner corner 13 </ b> B of the right set teeth 7 is the tooth tip ridge line 11 </ b> B of the straight tooth 5. In order not to protrude from the teeth, it is necessary to make the difference in tooth height dimension between the left and right set teeth 7 and 9 and the straight teeth 5 before the set-out process, that is, the size c 0.06 mm.

次に、前述と同条件において、左右のアサリ歯7、9における歯先稜線13A、15Aが直歯5であるベベル歯におけるベベル部稜線11Aの上端11Cよりも下側を横断するには、前記寸法cを、図4に示すように、0.23mmに設定する必要がある。この場合、前述した寸法aは、0.17mmとなる。   Next, under the same conditions as described above, the tooth tip ridge lines 13A and 15A in the left and right set teeth 7 and 9 are crossed below the upper end 11C of the bevel ridge line 11A in the bevel tooth which is the straight tooth 5. The dimension c needs to be set to 0.23 mm as shown in FIG. In this case, the dimension a described above is 0.17 mm.

上記説明より明らかなように、特許文献1に記載の帯鋸刃1を実際的な帯鋸刃に適用する場合、前述の寸法cは0.06mm〜0.23mmの範囲に設定する必要がある。なお、左右のアサリ歯7、9における歯先稜線13A、15Aが直歯5のベベル部稜線11Aを横断する位置は、ベベル部稜線11Aの中央部付近を横断することが望ましいものである。   As apparent from the above description, when the band saw blade 1 described in Patent Document 1 is applied to an actual band saw blade, the above-described dimension c needs to be set in a range of 0.06 mm to 0.23 mm. It should be noted that the positions where the tooth tip ridge lines 13A and 15A of the left and right set teeth 7 and 9 cross the bevel ridge line 11A of the straight tooth 5 preferably cross the vicinity of the center of the bevel ridge line 11A.

そこで、前述と同条件において、左右のアサリ歯7、9における歯先稜線13A、15Aがベベル歯(直歯)5のベベル部稜線11Aの中央部付近を横断する構成とする場合、図5に示すように、前記寸法cは0.11mmとなり、寸法aは0.05mmとなる。したがって、帯鋸刃1の使用により、直歯5が歯高方向に磨耗したときの余裕が0.05mmしかないこととなり、帯鋸刃1の寿命を考慮すると望ましい寸法ではない。   Therefore, under the same conditions as described above, when the tooth tip ridge lines 13A and 15A in the left and right set teeth 7 and 9 cross the vicinity of the center of the bevel ridge line 11A of the bevel tooth (straight tooth) 5, FIG. As shown, the dimension c is 0.11 mm and the dimension a is 0.05 mm. Therefore, by using the band saw blade 1, the margin when the straight tooth 5 is worn in the tooth height direction is only 0.05 mm, which is not a desirable dimension in consideration of the life of the band saw blade 1.

また、前記帯鋸刃1においては、左右のアサリ歯7、9によって切削されて連続的に発生する切粉17(図6参照)は、左右のアサリ歯7、9の走行方向前側のガレット19内において渦巻き状に巻かれる傾向にある。しかし、左右のアサリ歯7、9における歯先稜線13A、15Aは、帯鋸刃1の走行方向(矢印A方向)に対して横掬い角αだけ傾斜しているので、前記切粉17は、図6(B)に示すように、帯鋸刃1の走行方向に対して直交する左右方向へ突出する傾向にある。   In the band saw blade 1, the chips 17 (see FIG. 6) continuously generated by cutting with the left and right set teeth 7, 9 are generated in the galette 19 on the front side in the running direction of the left and right set teeth 7, 9. Tend to be spirally wound. However, since the tooth tip ridge lines 13A and 15A in the left and right set teeth 7 and 9 are inclined by a horizontal angle α with respect to the traveling direction (arrow A direction) of the band saw blade 1, the chips 17 are As shown in FIG. 6B, the band saw blade 1 tends to protrude in the left-right direction perpendicular to the traveling direction.

したがって、前記切粉17は、帯鋸刃1によって切削した切削溝内においてワークの切断面を擦ることとなり、切削抵抗が大きくなると共に切断面を荒らすこととなるものである。   Therefore, the chip 17 rubs the cut surface of the workpiece in the cutting groove cut by the band saw blade 1, and the cutting resistance increases and the cut surface becomes rough.

本発明は、前述のごとき従来の問題に鑑みてなされたもので、歯先に硬質の材料からなる切削チップを備えた帯鋸刃の製造方法であって、左右方向にアサリの振り出し加工を行った左右のアサリ歯の歯高寸法よりも直歯の歯高寸法を大きく設け、前記左右のアサリ歯における歯先の稜線は、左右のアサリ歯によって切削されて連続的に発生する切粉が左右方向へ突出することを抑制するために、左右のアサリ振り出し加工を行った後に研削加工を行うことにより、帯鋸刃の走行方向及び帯鋸刃の切込み方向に対して直交して形成してあることを特徴とするものである。 The present invention has been made in view of the conventional problems as described above, and is a method of manufacturing a band saw blade having a cutting tip made of a hard material at a tooth tip, and performing the swinging out of the claws in the left-right direction. The tooth height dimension of the straight tooth is set larger than the tooth height dimension of the left and right set teeth, and the ridgeline of the tip of the left and right set teeth is cut by the left and right set teeth to continuously generate chips in the left and right direction. In order to suppress the protrusion to the right and left, it is formed perpendicularly to the traveling direction of the band saw blade and the cutting direction of the band saw blade by performing grinding after performing the right and left clashes out processing It is what.

また、前記帯鋸刃の製造方法において、直歯は切削チップの両側面に傾斜面を備えたベベル歯であり、前記左右のアサリ歯における歯先の稜線は、帯鋸刃の走行方向から見て前記直歯における両側の傾斜したベベル部稜線の中央付近を横断していることを特徴とするものである。 Further, in the method of manufacturing the band saw blade, the straight tooth is a bevel tooth having inclined surfaces on both side surfaces of the cutting tip, and the ridge line of the tooth tip in the left and right set teeth is viewed from the traveling direction of the band saw blade. It traverses the vicinity of the center of an inclined bevel ridge line on both sides of a straight tooth.

また、前記帯鋸刃の製造方法において、前記直歯と左右のアサリ歯の歯高寸法の差は、帯鋸刃の使用により直歯が0.1mm以上歯高方向に磨耗することを許容する差であることを特徴とするものである。
In the method of manufacturing the band saw blade , the difference in tooth height between the straight tooth and the left and right set teeth is a difference that allows the straight tooth to be worn in the tooth height direction by 0.1 mm or more by using the band saw blade. It is characterized by being.

本発明によれば、左右のアサリ歯の振り出し加工を行った後に、左右のアサリ歯の歯先に備えた歯先チップ(切削チップ)の研磨加工を行って、歯先稜線を、帯鋸刃の走行方向及び切込み方向に対して直交する形態に加工するので、左右のアサリ歯における歯先稜線を、帯鋸刃の走行方向に対して直交する方向に形成することが容易であると共に、左右のアサリ歯の歯高寸法の調節も容易に行い得るものである。   According to the present invention, after the left and right set teeth are squeezed out, the tip tips (cutting tips) provided on the left and right set teeth are ground, and the tip edge ridge is formed by the band saw blade. Since it is machined into a form orthogonal to the traveling direction and the cutting direction, it is easy to form the tooth tip ridge line in the left and right set teeth in the direction orthogonal to the traveling direction of the band saw blade, and the right and left set teeth Adjustment of the tooth height dimension of the teeth can be easily performed.

そして、左右のアサリ歯における歯先稜線が帯鋸刃の走行方向に対して直交してあることにより、切粉が側面方向へ突出するようなことがなく、前述したごとき従来の問題を解消し得るものである。   And since the tooth tip ridge line in the left and right set teeth is orthogonal to the traveling direction of the band saw blade, the chips do not protrude in the lateral direction, and the conventional problems as described above can be solved. Is.

従来の帯鋸刃の構成を示す説明図である。It is explanatory drawing which shows the structure of the conventional band saw blade. 従来の帯鋸刃の構成を示す説明図である。It is explanatory drawing which shows the structure of the conventional band saw blade. 従来の帯鋸刃における直歯と左右のアサリ歯との関係を示す説明図である。It is explanatory drawing which shows the relationship between the straight tooth and the right and left set teeth in the conventional band saw blade. 従来の帯鋸刃における直歯と左右のアサリ歯との関係を示す説明図である。It is explanatory drawing which shows the relationship between the straight tooth and the right and left set teeth in the conventional band saw blade. 従来の帯鋸刃における直歯と左右のアサリ歯との関係を示す説明図である。It is explanatory drawing which shows the relationship between the straight tooth and the right and left set teeth in the conventional band saw blade. 従来の帯鋸刃における左右のアサリ歯によって切削された切粉の挙動の説明図である。It is explanatory drawing of the behavior of the chip cut by the left and right set teeth in the conventional band saw blade. 本発明の実施形態に係る帯鋸刃の構成を示す説明図である。It is explanatory drawing which shows the structure of the band saw blade which concerns on embodiment of this invention. 本発明の実施形態に係る帯鋸刃の構成を示す説明図である。It is explanatory drawing which shows the structure of the band saw blade which concerns on embodiment of this invention.

以下、図面を用いて本発明の実施形態に係る帯鋸刃について説明するに、前述した従来の帯鋸刃1と同一機能を奏する構成要素には同一符号を付することとして重複した説明は省略する。   Hereinafter, the band saw blade according to the embodiment of the present invention will be described with reference to the drawings. The same reference numerals are given to the constituent elements having the same functions as those of the conventional band saw blade 1 described above, and redundant description will be omitted.

図7を参照するに、本発明の実施形態に係る帯鋸刃1は、前述した従来の帯鋸刃と同様に、胴部材3の一側に直歯5、右アサリ歯7、左アサリ歯9を備えている。前記直歯5及び左右のアサリ歯7、9の先端には、従来の帯鋸刃と同様に、例えば超硬合金などのごとき硬質材料からなる歯先チップ(切削チップ)11、13、15が溶接等によって一体的に備えられている。そして、前記直歯5は、前記歯先チップ11の左右両側に傾斜面を形成することによってベベル部稜線11Aを備えたベベル歯に形成してある。なお、直歯(ベベル歯)5の構成は、前述した従来の構成と同一であるから、同一機能を奏する構成部分には同一符号を付することとして、より詳細な説明は省略する。   Referring to FIG. 7, a band saw blade 1 according to an embodiment of the present invention includes a straight tooth 5, a right set tooth 7, and a left set tooth 9 on one side of the body member 3 in the same manner as the conventional band saw blade described above. I have. To the tips of the straight teeth 5 and the left and right set teeth 7 and 9, tooth tip (cutting tips) 11, 13, and 15 made of a hard material such as cemented carbide, for example, are welded in the same manner as a conventional band saw blade. Etc. are integrally provided. The straight tooth 5 is formed into a bevel tooth having a bevel portion ridge line 11 </ b> A by forming inclined surfaces on the left and right sides of the tooth tip 11. In addition, since the structure of the straight tooth (bevel tooth) 5 is the same as the conventional structure mentioned above, the detailed description is abbreviate | omitted as attaching | subjecting the same code | symbol to the component which show | plays the same function.

前記左右のアサリ歯7、9における歯先稜線13A、15Aは、図8(B)に示すように、帯鋸刃1の走行方向(矢印A方向)に対して直交し、かつ図7に示すように、ワークに対する帯鋸刃1の切込み方向(矢印B方向)に対して直交する方向に形成してある。そして、左右のアサリ歯7、9の歯高寸法は、図7に示すように、直歯5の歯高寸法より小さく構成してあり、左右のアサリ歯7、9における各歯先稜線13A、15Aは、帯鋸刃1の走行方向から見て、図7に示すように、直歯5におけるベベル部稜線11Aの中央部付近を横断している。したがって、帯鋸刃1によってワークを切断するとき、直歯5、左右のアサリ歯7、9の切削抵抗をバランスよく配分することが可能であり、安定した切削を行うことができるものである。   As shown in FIG. 8 (B), the tooth tip ridge lines 13A and 15A of the left and right set teeth 7 and 9 are orthogonal to the traveling direction (arrow A direction) of the band saw blade 1 and as shown in FIG. In addition, it is formed in a direction orthogonal to the cutting direction (arrow B direction) of the band saw blade 1 with respect to the workpiece. As shown in FIG. 7, the tooth height dimension of the left and right set teeth 7 and 9 is smaller than the tooth height dimension of the straight tooth 5. As shown in FIG. 7, 15 </ b> A crosses the vicinity of the central portion of the bevel ridge line 11 </ b> A in the straight tooth 5 when viewed from the traveling direction of the band saw blade 1. Therefore, when the work is cut by the band saw blade 1, the cutting resistance of the straight teeth 5 and the left and right set teeth 7 and 9 can be distributed in a balanced manner, and stable cutting can be performed.

前述のように、左右のアサリ歯7、9における歯先稜線13A、15Aが、帯鋸刃1の走行方向(矢印A方向)及び切込み方向(矢印B方向)に対して直交する方向に形成してあることにより、左右のアサリ歯7、9によって切削されて連続的に発生する切粉は、ガレット19内に渦巻き状に巻き込まれるものの、従来の帯鋸刃のごとく、帯鋸刃1の走行方向に対して直交する左右方向へ突出することを抑制でき、前述したごとき従来の問題を解消することができるものである。   As described above, the tip edge lines 13A and 15A of the left and right set teeth 7 and 9 are formed in a direction orthogonal to the traveling direction (arrow A direction) and the cutting direction (arrow B direction) of the band saw blade 1. As a result, the chips that are continuously generated by being cut by the left and right set teeth 7 and 9 are spirally wound in the galette 19, but the traveling direction of the band saw blade 1 is the same as that of the conventional band saw blade. Projecting in the right and left directions perpendicular to each other can be suppressed, and the conventional problems as described above can be solved.

ところで、本発明の実施形態に係る帯鋸刃1の製造に当っては、直歯5及び左右のアサリ歯7、9の歯高寸法は同一寸法に形成してもよく、また、左右のアサリ歯7、9の歯高寸法を、直歯5の歯高寸法よりも予め小さく形成してもよいものである。そして、直歯5に対して左右のアサリ歯7、9のアサリ振り出し加工(曲げ加工)を行った後、直歯5における歯先チップ11及び左右のアサリ歯7、9における歯先チップ13、15の研磨(研削)加工を行うものである。   By the way, in manufacturing the band saw blade 1 according to the embodiment of the present invention, the tooth height of the straight tooth 5 and the left and right set teeth 7 and 9 may be formed to be the same, and the left and right set teeth. The tooth height dimension of 7 and 9 may be formed smaller than the tooth height dimension of the straight tooth 5 in advance. Then, after performing the straightening process (bending) of the left and right set teeth 7 and 9 with respect to the straight tooth 5, the addendum tip 11 in the straight tooth 5 and the addendum tip 13 in the left and right set teeth 7 and 9, 15 polishing (grinding) processes are performed.

直歯5及び左右のアサリ歯9,7の歯高寸法を同一寸法に形成した場合には、先ず、左右のアサリ歯となる鋸歯を左右に振り出し加工を行う。次に、アサリの振り出し加工を行った後の左右のアサリ歯の歯先に備えた切削チップの逃げ面に研磨加工を行ない、掬い面研磨後の左右のアサリ歯における歯先の稜線が、帯鋸刃の切込み方向に対して直交する形態に加工する。そして、アサリの振り出し加工を行った後の左右のアサリ歯の歯先に備えた切削チップの掬い面に研磨加工を行ない、左右のアサリ歯における歯先の稜線が、帯鋸刃の走行方向および切込み方向に対して直交する形態に加工する。なお、前記、左右のアサリ歯における歯先の稜線は、アサリの振り出し加工を行った後の左右のアサリ歯の歯先に備えた切削チップの逃げ面の研磨加工、あるいは、掬い面の研磨加工を行なう時に、直歯となる鋸歯よりも歯高寸法を小さくする。   When the tooth height of the straight tooth 5 and the left and right set teeth 9 and 7 are formed to be the same, first, the saw teeth that become the left and right set teeth are drawn out to the left and right. Next, the flank surfaces of the cutting tips prepared on the tooth tips of the left and right set teeth after grinding of the claws are ground, and the edge lines of the tooth tips on the left and right set teeth after scooping are ground. Processing into a form orthogonal to the cutting direction of the blade. Then, grinding is performed on the scooping surfaces of the cutting tips provided on the tooth tips of the left and right set teeth after the set-up process of the claws, and the ridge lines of the tooth tips on the left and right set teeth determine the running direction and cutting of the band saw blade. Process in a form perpendicular to the direction. In addition, the edge line of the tooth tip in the left and right set teeth is the polishing process of the flank of the cutting tip provided on the left and right set teeth of the set tooth after the swinging process of the set file or the polishing process of the scooping surface When performing the above, the height of the tooth is made smaller than that of the saw tooth that is a straight tooth.

又は、先ず、左右のアサリ歯となる鋸歯を左右に振り出し加工を行う。次に、アサリの振り出し加工を行った後の左右のアサリ歯の歯先に備えた切削チップの掬い面に研磨加工を行ない、逃げ面研磨後の左右のアサリ歯における歯先の稜線が、帯鋸刃の走行方向に対して直交する形態に加工する。そして、アサリの振り出し加工を行った後の左右のアサリ歯の歯先に備えた切削チップの逃げ面に研磨加工を行ない、左右のアサリ歯における歯先の稜線を、帯鋸刃の切込み方向および走行方向に対して直交する形態に加工する。なお、前記、左右のアサリ歯における歯先の稜線は、アサリの振り出し加工を行った後の左右のアサリ歯の歯先に備えた切削チップの逃げ面の研磨加工、あるいは、掬い面の研磨加工を行なう時に、直歯となる鋸歯よりも歯高寸法を小さくする。   Alternatively, first, the saw teeth that are the left and right set teeth are slid out to the left and right. Next, grinding is performed on the scooping surfaces of the cutting tips prepared on the tooth tips of the left and right set teeth after the set-up process of the claws, and the ridge lines of the tooth tips on the left and right set teeth after flank polishing are the band saw. Processing into a form orthogonal to the traveling direction of the blade. Then, the flank surfaces of the cutting tips prepared on the tooth tips of the left and right set teeth after grinding the claws are polished, and the ridge lines of the tooth tips on the left and right set teeth are cut in the cutting direction and travel of the band saw blade. Process in a form perpendicular to the direction. In addition, the edge line of the tooth tip in the left and right set teeth is the polishing process of the flank of the cutting tip provided on the left and right set teeth of the set tooth after the swinging process of the set file or the polishing process of the scooping surface When performing the above, the height of the tooth is made smaller than that of the saw tooth that is a straight tooth.

前述のごとく帯鋸刃を構成するに際し、直歯5における歯先チップ11のベベル部稜線11Aの水平に対する傾斜角度(ベベル角度)は、30°〜60°の範囲が望ましく、左右の側面方向と切込み方向の力のバランスを考慮すると、上記ベベル角度は45°が望ましいものである。そして、ベベル歯(直歯)5における歯先稜線11Bの寸法は、胴部材3の厚さ寸法の40〜70%の範囲が好ましく、歯先稜線11Bの部分のチッピングやベベル歯5に作用する切削抵抗を考慮すると、前記厚さ寸法の55〜65%がより好ましいものである。   When the band saw blade is configured as described above, the inclination angle (bevel angle) of the bevel tip edge 11A of the tooth tip 11 with respect to the horizontal in the straight tooth 5 is desirably in the range of 30 ° to 60 °, and the lateral side direction and the incision are formed. Considering the balance of directional force, the bevel angle is preferably 45 °. And the dimension of the tooth tip ridge line 11B in the bevel tooth (straight tooth) 5 is preferably in the range of 40 to 70% of the thickness dimension of the body member 3, and acts on the chipping of the portion of the tooth tip ridge line 11B or the bevel tooth 5. Considering cutting resistance, 55 to 65% of the thickness dimension is more preferable.

前述したごとく、左右のアサリ歯7、9の振り出し加工(曲げ加工)を行った後に、左右のアサリ歯7、9に備えた歯先チップ13、15の研削加工を行うものであるから、歯先稜線13A、15Aを、帯鋸刃1の走行方向(矢印A方向)及び切込み方向(矢印B方向)に対して直交する形態に形成することが容易である。この際、左右のアサリ歯7、9における歯先チップ13、15の掬い面は、帯鋸刃1の走行方向に対して直交する左右方向に平行な面に形成されるものである。したがって、切削によって連続的に発生する切粉が左右方向へ突出するようなことがないものである。   As described above, the tooth tips 13 and 15 provided on the left and right set teeth 7 and 9 are ground after the left and right set teeth 7 and 9 are drawn out (bending). It is easy to form the leading edges 13A and 15A in a form orthogonal to the traveling direction (arrow A direction) and the cutting direction (arrow B direction) of the band saw blade 1. At this time, the scooping surfaces of the tip tips 13 and 15 of the left and right set teeth 7 and 9 are formed in a plane parallel to the left and right direction perpendicular to the traveling direction of the band saw blade 1. Therefore, the chips generated continuously by cutting do not protrude in the left-right direction.

既に理解されるように、左右のアサリ歯7、9における歯先チップ13、15は、振り出し加工を行った後に研削加工するものであるから、左右のアサリ歯7、9の歯高寸法の調節が容易であり、直歯5と左右のアサリ歯7、9との歯高寸法の差をより正確に設定することができる。すなわち、上記歯高寸法の差を所望の寸法とすることができる。この場合、帯鋸刃の寿命時には、直歯5には0.1mm程度の磨耗が生じるので、前記歯高寸法の差は0.1mm以上とすることが望ましいものである。換言すれば、歯高寸法の差は、直歯5が0.1mm以上歯高方向に磨耗することを許容する範囲の差であることが望ましいものである。   As already understood, the tip tips 13 and 15 of the left and right set teeth 7 and 9 are ground and then ground, so adjustment of the tooth height dimension of the left and right set teeth 7 and 9 is performed. Therefore, the difference in tooth height between the straight tooth 5 and the left and right set teeth 7 and 9 can be set more accurately. That is, the difference in the tooth height dimension can be set to a desired dimension. In this case, during the life of the band saw blade, the direct tooth 5 is worn by about 0.1 mm, so it is desirable that the difference in tooth height dimension is 0.1 mm or more. In other words, it is desirable that the difference in the tooth height dimension is a difference in a range in which the straight tooth 5 is allowed to wear in the tooth height direction by 0.1 mm or more.

1 帯鋸刃
3 胴部材
5 直歯
7 右アサリ歯
9 左アサリ歯
11,13,15 切削チップ(歯先チップ)
11A ベベル部稜線
11B,13A,15A 歯先稜線
11C 上端
13B,15B 内側コーナー部
13C,15C 外側コーナー部
17 切粉
19 ガレット
DESCRIPTION OF SYMBOLS 1 Band saw blade 3 Body member 5 Straight tooth 7 Right set teeth 9 Left set teeth 11, 13, 15 Cutting tip (tooth tip)
11A Bevel part ridge line 11B, 13A, 15A Tooth edge ridge line 11C Upper end 13B, 15B Inner corner part 13C, 15C Outer corner part 17 Chip 19 Galette

Claims (3)

歯先に硬質の材料からなる切削チップを備えた帯鋸刃の製造方法であって、左右方向にアサリの振り出し加工を行った左右のアサリ歯の歯高寸法よりも直歯の歯高寸法を大きく設け、前記左右のアサリ歯における歯先の稜線は、左右のアサリ歯によって切削されて連続的に発生する切粉が左右方向へ突出することを抑制するために、左右のアサリ振り出し加工を行った後に研削加工を行うことにより、帯鋸刃の走行方向及び帯鋸刃の切込み方向に対して直交して形成してあることを特徴とする帯鋸刃の製造方法A method for manufacturing a band saw blade having a cutting tip made of a hard material at the tooth tip, wherein the tooth height dimension of the straight tooth is larger than the tooth height dimension of the left and right clam teeth that have been subjected to the swinging out of the claws. The ridge line of the tooth tip in the left and right set teeth has been subjected to left and right set-up operations in order to prevent the chips generated by cutting continuously by the left and right set teeth from protruding in the left and right direction. A method for manufacturing a band saw blade , characterized in that the band saw blade is formed at right angles to the traveling direction of the band saw blade and the cutting direction of the band saw blade by performing a grinding process later. 請求項1に記載の帯鋸刃の製造方法において、直歯は切削チップの両側面に傾斜面を備えたベベル歯であり、前記左右のアサリ歯における歯先の稜線は、帯鋸刃の走行方向から見て前記直歯における両側の傾斜したベベル部稜線の中央付近を横断していることを特徴とする帯鋸刃の製造方法In the manufacturing method of the band saw blade according to claim 1, straight teeth are bevel teeth provided with inclined surfaces on both side surfaces of the cutting tip, and a ridge line of a tooth tip in the left and right set teeth is from a traveling direction of the band saw blade. A method for manufacturing a band saw blade , characterized by crossing the vicinity of the center of an inclined bevel ridge line on both sides of the straight tooth as viewed. 請求項1又は2に記載の帯鋸刃の製造方法において、前記直歯と左右のアサリ歯の歯高寸法の差は、帯鋸刃の使用により直歯が0.1mm以上歯高方向に磨耗することを許容する差であることを特徴とする帯鋸刃の製造方法3. The method of manufacturing a band saw blade according to claim 1 or 2, wherein the difference in tooth height between the straight tooth and the left and right set teeth is that the direct tooth is worn in the tooth height direction by 0.1 mm or more by using the band saw blade. A method of manufacturing a band saw blade , characterized in that the difference is acceptable.
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