JPH0715225U - Carbide tip and circular saw using this carbide tip - Google Patents

Carbide tip and circular saw using this carbide tip

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Publication number
JPH0715225U
JPH0715225U JP4717893U JP4717893U JPH0715225U JP H0715225 U JPH0715225 U JP H0715225U JP 4717893 U JP4717893 U JP 4717893U JP 4717893 U JP4717893 U JP 4717893U JP H0715225 U JPH0715225 U JP H0715225U
Authority
JP
Japan
Prior art keywords
rake face
cemented carbide
circular saw
carbide tip
flank
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP4717893U
Other languages
Japanese (ja)
Inventor
愼太郎 山本
Original Assignee
山真製鋸有限会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 山真製鋸有限会社 filed Critical 山真製鋸有限会社
Priority to JP4717893U priority Critical patent/JPH0715225U/en
Publication of JPH0715225U publication Critical patent/JPH0715225U/en
Pending legal-status Critical Current

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Abstract

(57)【要約】 【目的】 製造コストの低減が図れると共に、切断時の
切り粉の掃けが良好になり、切削荷重が軽くなって充分
な切れ味が得られる、超硬チップ及びこの超硬チップを
使用した丸鋸を提供する。 【構成】 超硬合金からなり、すくい面に対して所定角
度で傾斜する逃げ面を有し、すくい面と逃げ面の稜線
と、すくい面と両側面の少なくとも刃先側の稜線とが、
それぞれ凹窟状の曲線になる如く、すくい面に三次元形
状の凹部を形成する。丸鋸は、このチップを丸鋸素材の
周縁部に形成された歯形部に、それぞれロウ付け固定し
て形成される。
(57) [Summary] [Purpose] A cemented carbide tip and this cemented carbide tip that can reduce the manufacturing cost, improve the sweeping of the cutting chips during cutting, reduce the cutting load and obtain sufficient sharpness. Provide a circular saw using. [Composition] Made of cemented carbide, having a flank that inclines at a predetermined angle with respect to the rake face, and the ridgeline of the rake face and the flank, and the ridgeline of at least the cutting edge side of the rake face and both side faces,
A three-dimensional concave portion is formed on the rake face so as to form a concave curve. The circular saw is formed by brazing and fixing the chips to the toothed portions formed on the peripheral portion of the circular saw material.

Description

【考案の詳細な説明】[Detailed description of the device]

【0001】[0001]

【産業上の利用分野】[Industrial applications]

本考案は、丸鋸素材の周縁部の歯形部にそれぞれロウ付け固定される、超硬チ ップ及びこの超硬チップを使用した丸鋸に関する。 The present invention relates to a cemented carbide chip and a circular saw using the cemented carbide tip, which are brazed and fixed to the tooth profile of the peripheral edge of the circular saw material.

【0002】[0002]

【従来の技術】[Prior art]

従来、メタルソー、コールドソー等の超硬チップ付きの丸鋸としては、例えば 実開昭63−110318号公報に開示のものが知られている。この丸鋸は、円 板状の丸鋸素材の周縁部の歯形部に、超硬合金からなるチップをそれぞれロウ付 け固定したものである。そして、そのチップは、逃げ面を、すくい面に対して所 定角度になるように研磨して形成される。 Conventionally, as a circular saw with a super hard tip such as a metal saw and a cold saw, for example, one disclosed in Japanese Utility Model Laid-Open No. 63-110318 is known. In this circular saw, chips made of cemented carbide are brazed and fixed to the tooth profile of the peripheral edge of a disk-shaped circular saw material. Then, the tip is formed by polishing the flank face so as to form a predetermined angle with respect to the rake face.

【0003】[0003]

【考案が解決しようとする課題】[Problems to be solved by the device]

しかしながら、この丸鋸にあっては、すくい面の研磨作業が面倒で製造コスト がアップすると共に、切断時に切り粉の掃けが悪くて、切削荷重が重くなって充 分な切れ味が得られないという問題点があった。即ち、小さな形状の超硬チップ の逃げ面を一々研磨しなければならず、その作業が大変であると共に、角度のば らつきによる製品歩留りの低下等により、製造コストがアップする。また、すく い面と逃げ面の稜線である刃先と、すくい面と両側面の稜線とが共に直線的であ るため、切断時に切り粉の掃けが悪くなり、切削荷重が重くなって充分な切れ味 が得られない。 However, with this circular saw, polishing work on the rake face is troublesome, which increases the manufacturing cost, and the sweeping of the chips during cutting is poor, and the cutting load is heavy, and sufficient sharpness cannot be obtained. There was a problem. That is, the flanks of the small-sized cemented carbide chips have to be polished one by one, and the work is difficult, and the production yield is increased due to a decrease in the product yield due to the angular fluctuation. Moreover, since the cutting edge, which is the ridgeline of the rake face and the flank face, and the ridgeline of the rake face and both side faces are both straight, the sweeping of the chips becomes poor at the time of cutting and the cutting load becomes heavy and sufficient. The sharpness cannot be obtained.

【0004】 本考案は、このような事情に鑑みてなされたもので、その目的は、製造コスト の低減が図れると共に、切断時の切り粉の掃けが良好になり、切削荷重が軽くな って充分な切れ味が得られる、超硬チップ及びこのチップを使用した丸鋸を提供 することにある。The present invention has been made in view of such circumstances, and an object thereof is to reduce the manufacturing cost, to improve the sweeping of the cutting chips at the time of cutting, and to reduce the cutting load. (EN) Provided are a super hard tip and a circular saw using this tip, which can obtain sufficient sharpness.

【0005】[0005]

【課題を解決するための手段】 かかる目的を達成すべく、請求項1記載の超硬チップは、超硬合金からなり、 すくい面に対して所定角度で傾斜する逃げ面を有し、すくい面と逃げ面の稜線と 、すくい面と両側面の少なくとも刃先側の稜線とが、それぞれ凹窟状の曲線にな る如く、前記すくい面に三次元形状の凹部を形成したことを特徴とする。また、 請求項2記載の超硬チップは、凹部が、刃先側から、両側面の全長の略2/3の 位置まで設けられていることを特徴とする。In order to achieve such an object, the cemented carbide tip according to claim 1 is made of cemented carbide and has a flank that inclines at a predetermined angle with respect to the rake face. And the flank of the flank and the rake face and the ridges of both sides at least on the cutting edge side each have a concave-shaped curve, and a three-dimensional concave portion is formed on the rake face. Further, the cemented carbide tip according to claim 2 is characterized in that the concave portion is provided from the cutting edge side to a position of approximately ⅔ of the entire length of both side surfaces.

【0006】 さらに、請求項3の記載の丸鋸は、円板状の丸鋸素材の周縁部に複数個の歯形 部を形成し、この歯形部に、超硬合金からなり、すくい面と逃げ面の稜線とすく い面と両側面の少なくとも刃先側の稜線とが、それぞれ凹窟状の曲線になる如く 、前記すくい面に三次元形状の凹部が形成された超硬チップを、それぞれロウ付 け固定したことを特徴とする。Further, in the circular saw according to claim 3, a plurality of tooth profile portions are formed on a peripheral portion of a disk-shaped circular saw material, and the tooth profile portions are made of cemented carbide and have a rake face and a flank face. Carbide chips with three-dimensional recesses formed on the rake face are brazed so that the ridge line of the face and the rake face and the ridge lines on at least the cutting edge side of both sides are concave curves. It is characterized by being fixed.

【0007】[0007]

【作用】[Action]

まず、請求項1記載の超硬チップによれば、例えば金型を利用して、逃げ面が すくい面に対して所定角度傾斜する如く形成すると共に、すくい面に三次元形状 の凹部を形成し、すくい面と逃げ面及びすくい面と両側面の刃先側の稜線を、凹 窟状の曲線に形成する。これにより、逃げ面の研磨が不要になると共に、曲線に より、例えば切断時の切り粉が両側面に掃きだされて、切削荷重が軽くなって充 分な切れ味が得られる。また、請求項2記載の超硬チップによれば、すくい面と 両側面の稜線に設けられる曲線部を、全長の2/3の長さとし、残りを直線部に する。この直線部により、超硬チップの、例えば丸鋸素材の歯形部への位置決め 等が容易になる。 First, according to the cemented carbide tip of claim 1, for example, a die is used to form the flank so as to be inclined at a predetermined angle with respect to the rake face, and to form a three-dimensional concave portion on the rake face. , The ridges on the cutting edge side of the rake face and flank, and the rake face and both sides are formed in a concave curve. As a result, polishing of the flank is not required, and the curve allows, for example, chips at the time of cutting to be swept to both sides, reducing the cutting load and obtaining sufficient sharpness. Further, according to the cemented carbide tip of the second aspect, the curved portion provided on the ridgeline of the rake face and both side surfaces has a length of 2/3 of the total length, and the rest is a straight portion. The straight portion facilitates positioning of the cemented carbide tip, for example, on the toothed portion of a circular saw material.

【0008】 さらに、請求項3記載の丸鋸によれば、丸鋸素材の周縁部の歯形部に超硬チッ プをそれぞれロウ付け固定する。この超硬チップは、そのすくい面に凹部が形成 され、この凹部によって、切断時の切り粉の掃けが良好になり、充分な切れ味が 得られる。Further, according to the circular saw of the third aspect, the cemented carbide chips are brazed and fixed to the toothed portions of the peripheral edge of the circular saw material. This cemented carbide chip has a concave portion formed on the rake face, and the concave portion makes it possible to satisfactorily sweep out the cutting chips at the time of cutting and obtain sufficient sharpness.

【0009】[0009]

【実施例】【Example】

以下、本考案の一実施例を図面に基づいて詳細に説明する。 図1は、本考案に係わる丸鋸の平面図を示している。図1において、丸鋸1は 、鋼板材をプレス加工して形成された円板状の丸鋸素材2を有している。この丸 鋸素材2の中心部には取付け孔3が穿設されると共に、その周縁部4には、円周 方向に等間隔で複数個の歯形部5が形成され、この歯形部5に超硬チップ6(以 下、単にチップという)がそれぞれロウ付け固定されている。 An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a plan view of a circular saw according to the present invention. In FIG. 1, a circular saw 1 has a disc-shaped circular saw material 2 formed by pressing a steel plate material. A mounting hole 3 is bored in the center of the circular saw material 2, and a plurality of tooth profile portions 5 are formed on the peripheral edge portion 4 at equal intervals in the circumferential direction. Hard chips 6 (hereinafter simply referred to as chips) are fixed by brazing.

【0010】 チップ6は、金型によるプレス成形等により、図2〜図6に示す如く、すくい 面6a、逃げ面6b、側面6c、6d、背面6e、上面6fを有する略台形形状 に形成されている。すくい面6aには三次元形状(楕円体の一部を表す形状)の 凹部7が形成され、これにより、図4及び図6に示すように、すくい面6aと両 側面6c、6dの稜線L1、及びすくい面6aと逃げ面6bの稜線L2、即ち刃 先が、凹窟状の曲線になっている。凹部7は、チップ6の長手方向の全長l(図 4参照)の刃先側から2/3の位置まで形成され、残りの略1/3は直線部Tに なっている。2 to 6, the chip 6 is formed into a substantially trapezoidal shape having a rake face 6a, a flank face 6b, side faces 6c and 6d, a back face 6e and an upper face 6f, as shown in FIGS. ing. A recess 7 having a three-dimensional shape (a shape representing a part of an ellipsoid) is formed on the rake face 6a, and as a result, as shown in FIGS. 4 and 6, the ridge line L1 of the rake face 6a and both side faces 6c, 6d is formed. , And the ridge line L2 of the rake face 6a and the flank face 6b, that is, the cutting edge is a concave-shaped curve. The concave portion 7 is formed from the blade edge side of the entire length 1 (see FIG. 4) of the tip 6 in the longitudinal direction to a position of 2/3, and the remaining approximately 1/3 is a straight portion T.

【0011】 また、チップ6のすくい面6aに対する逃げ面6bの角度K(図4参照)は、 例えば10〜15度、好ましくは13度に設定されている。このチップ6は、図 2に示すように、その背面6e、上面6fが、丸鋸素材2の歯形部5に設けた段 部8に位置決めされてロウ付け固定される。The angle K (see FIG. 4) of the flank 6b with respect to the rake face 6a of the tip 6 is set to, for example, 10 to 15 degrees, preferably 13 degrees. As shown in FIG. 2, the tip 6 has its back surface 6e and top surface 6f positioned on the stepped portion 8 provided on the tooth profile portion 5 of the circular saw blank 2 and fixed by brazing.

【0012】 このように、この丸鋸1にあっては、チップ6を金型を利用して成形するため 、従来のように、逃げ面6bを所定角度に一々研磨する作業が不要になり、刃先 のごくわずかな(取りしろ0.05mm程度)研磨ですむと共に、安定した形状 のチップ6が大量に得られ、チップ6の製造コストを低減させることができる。 また、チップ6のすくい面6aに凹部7を形成し、稜線L1、L2を凹窟状の曲 線に形成しているため、特に刃先側から設けた稜線L1により切削時の切り粉の 掃けが良好になり、切削荷重が軽くなって充分な切断効果が得られる。さらに、 チップ6の直線部Tにより、例えば図2に二点鎖線で示す如く、段部8に凹部9 を有する場合等、チップ6の段部8への位置決めを確実に行うことができ、その ロウ付け作業が容易になる。As described above, in the circular saw 1, since the tip 6 is formed by using the mold, it is not necessary to grind the flank 6b at a predetermined angle one by one as in the conventional case. It is possible to reduce the manufacturing cost of the chips 6 by polishing a very small amount of the cutting edge (removal margin of about 0.05 mm) and obtaining a large number of chips 6 having a stable shape. Further, since the concave portion 7 is formed on the rake face 6a of the tip 6 and the ridge lines L1 and L2 are formed in the concave-shaped curved lines, the ridge line L1 provided from the cutting edge side particularly allows the cleaning of the cutting chips at the time of cutting. It becomes good, the cutting load is light and the sufficient cutting effect is obtained. Further, the straight portion T of the chip 6 can reliably position the chip 6 on the stepped portion 8 when the stepped portion 8 has a recess 9 as shown by a chain double-dashed line in FIG. Brazing work becomes easy.

【0013】 図7は、本考案に係わるチップの他の実施例を示している。この実施例のチッ プ16は、すくい面16aに設ける楕円体形状の凹部17を、チップ16の長手 方向の略全域に形成している。他の構成については、上記実施例と同様である。 このチップ16においても、上記実施例と同様の作用効果が得られる。FIG. 7 shows another embodiment of the chip according to the present invention. In the chip 16 of this embodiment, an ellipsoidal concave portion 17 provided on the rake face 16a is formed substantially in the entire longitudinal direction of the chip 16. Other configurations are the same as those in the above embodiment. Also in this chip 16, the same operational effect as that of the above-described embodiment can be obtained.

【0014】 図8及び図9は、本考案に係わるチップのさらに他の実施例を示している。こ のチップ26は、すくい面26aを上面26fより大きくすることにより、台形 形状に形成されている。すくい面26aには、楕円体形状の凹部27が形成され 、その他の構成については、上記各実施例と同様である。この実施例においても 、凹部27により切り粉の掃けが良好になり、充分な切れ味が得られる。8 and 9 show another embodiment of the chip according to the present invention. The tip 26 is formed in a trapezoidal shape by making the rake face 26a larger than the upper face 26f. An elliptical recess 27 is formed on the rake face 26a, and the other configurations are the same as those in the above-described embodiments. Also in this embodiment, the scavenging 27 improves the sweeping of the swarf and provides sufficient sharpness.

【0015】 なお、上記各実施例においては、凹部を楕円体形状としたが、例えば球体形状 としてもよいし、他の適宜な三次元形状としてもよい。また、上記各実施例にお ける、丸鋸素材2の歯形部5、チップ6、16、26、段部8の形状も一例であ って、本考案の要旨を逸脱しない範囲において、種々変更可能であることは言う までもない。In each of the above-described embodiments, the concave portion has an elliptical shape, but may have, for example, a spherical shape or another appropriate three-dimensional shape. Further, the shapes of the tooth profile 5, the chips 6, 16, 26, and the step 8 of the circular saw material 2 in each of the above-described embodiments are also examples, and various modifications may be made without departing from the scope of the present invention. It goes without saying that it is possible.

【0016】[0016]

【考案の効果】[Effect of device]

以上詳述したように、本考案の超硬チップ及びこの超硬チップを使用した丸鋸 によれば、チップの製造コストを低減させることができると共に、切断時の切り 粉の掃けが良好になり、切削荷重が軽くなって充分な切れ味が得られる等の効果 を奏する。 As described above in detail, according to the cemented carbide tip of the present invention and the circular saw using the cemented carbide tip, the manufacturing cost of the tip can be reduced and the sweeping of the chips at the time of cutting is improved. Also, the cutting load is reduced and sufficient sharpness is obtained.

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

【図1】本考案に係わる丸鋸の平面図FIG. 1 is a plan view of a circular saw according to the present invention.

【図2】同要部の平面図FIG. 2 is a plan view of the main part.

【図3】同超硬チップの斜視図FIG. 3 is a perspective view of the carbide tip.

【図4】同側面図FIG. 4 is a side view of the same.

【図5】同平面図FIG. 5 is a plan view of the same.

【図6】同正面図FIG. 6 is a front view of the same.

【図7】本考案に係わる超硬チップの他の実施例を示す
側面図
FIG. 7 is a side view showing another embodiment of the carbide tip according to the present invention.

【図8】本考案に係わる超硬チップのさらに他の実施例
を示す斜視図
FIG. 8 is a perspective view showing still another embodiment of the carbide tip according to the present invention.

【図9】同正面図FIG. 9 is a front view of the same.

【符号の説明】[Explanation of symbols]

1 丸鋸 2 丸鋸素材 4 周縁部 5 歯形部 6、16、26 超硬チップ 6a、16a、26a すくい面 6b、16b、26b 逃げ面 7、17、27 凹部 8 段部 L1 稜線 L2 稜線(刃先) 1 Circular Saw 2 Circular Saw Material 4 Peripheral Edge 5 Tooth Shaped Part 6, 16, 26 Carbide Tip 6a, 16a, 26a Rake Face 6b, 16b, 26b Relief Face 7, 17, 27 Recess 8 Step L1 Ridge L2 Ridge (Cutting Edge )

Claims (3)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】超硬合金からなり、すくい面に対して所定
角度で傾斜する逃げ面を有し、前記すくい面と逃げ面の
稜線と、前記すくい面と両側面の少なくとも刃先側の稜
線とが、それぞれ凹窟状の曲線になる如く、前記すくい
面に三次元形状の凹部を形成したことを特徴とする超硬
チップ。
1. A ridgeline of the rake face and the flank face, which is made of cemented carbide and has a flank face inclined at a predetermined angle with respect to the rake face, and at least a ridge line of the rake face and both side faces on the cutting edge side. However, the cemented carbide tip is characterized in that a three-dimensional concave portion is formed on the rake face so as to form a concave curve.
【請求項2】前記凹部が、前記刃先側から、両側面の全
長の略2/3の位置まで設けられていることを特徴とす
る、請求項1記載の超硬チップ。
2. The cemented carbide tip according to claim 1, wherein the concave portion is provided from the cutting edge side to a position of approximately 2/3 of the entire length of both side surfaces.
【請求項3】円板状の丸鋸素材の周縁部に複数個の歯形
部を形成し、該歯形部に、超硬合金からなり、すくい面
と逃げ面の稜線とすくい面と両側面の少なくとも刃先側
の稜線とが、それぞれ凹窟状の曲線になる如く、前記す
くい面に三次元形状の凹部が形成された超硬チップを、
それぞれロウ付け固定したことを特徴とする丸鋸。
3. A disk-shaped circular saw material is provided with a plurality of tooth-shaped portions on a peripheral portion thereof, and the tooth-shaped portions are made of cemented carbide and are provided with ridge lines of a rake face and a flank, a rake face and both side faces. At least the ridgeline on the cutting edge side, so that each becomes a concave curve, a cemented carbide tip having a three-dimensional concave portion formed on the rake face,
Circular saws characterized by brazing and fixing.
JP4717893U 1993-08-05 1993-08-05 Carbide tip and circular saw using this carbide tip Pending JPH0715225U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4717893U JPH0715225U (en) 1993-08-05 1993-08-05 Carbide tip and circular saw using this carbide tip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4717893U JPH0715225U (en) 1993-08-05 1993-08-05 Carbide tip and circular saw using this carbide tip

Publications (1)

Publication Number Publication Date
JPH0715225U true JPH0715225U (en) 1995-03-14

Family

ID=12767830

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4717893U Pending JPH0715225U (en) 1993-08-05 1993-08-05 Carbide tip and circular saw using this carbide tip

Country Status (1)

Country Link
JP (1) JPH0715225U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007307911A (en) * 2006-05-20 2007-11-29 Ake Knebel Gmbh & Co Kg Saw tooth with hard layer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0241812A (en) * 1988-07-29 1990-02-13 Kanefusa Hamono Kogyo Kk Chip for metal cutting round saw

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0241812A (en) * 1988-07-29 1990-02-13 Kanefusa Hamono Kogyo Kk Chip for metal cutting round saw

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007307911A (en) * 2006-05-20 2007-11-29 Ake Knebel Gmbh & Co Kg Saw tooth with hard layer

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