JP6773265B2

JP6773265B2 - Tipped saw

Info

Publication number: JP6773265B2
Application number: JP2016113061A
Authority: JP
Inventors: 良雄金原; 友良宮崎
Original assignee: 株式会社トリガー
Priority date: 2016-05-19
Filing date: 2016-05-19
Publication date: 2020-10-21
Anticipated expiration: 2036-05-19
Also published as: JP2017205998A

Description

本発明は、例えば木材や各種ボードを切断する際に電動工具に装着されて使用されるチップソー関する。 The present invention relates to a tipped saw that is attached to an electric tool and used when cutting wood or various boards, for example.

従来、この種のチップソーは、例えば特許文献１に開示されている。このチップソーは、前面に刃先が形成されたチップを、台金（鋸身）の厚さより大きい厚さにすると共に、その両側面に前面から後面に至る溝を形成し、この溝が形成されている部分のチップの厚さを台金の厚さと同一に設定し得るようにしたものである。 Conventionally, this type of tipped saw is disclosed in, for example, Patent Document 1. In this tip saw, the tip having the cutting edge formed on the front surface is made thicker than the thickness of the base metal (saw blade), and grooves are formed on both side surfaces thereof from the front surface to the rear surface, and these grooves are formed. The thickness of the chip in the existing part can be set to be the same as the thickness of the base metal.

特開２０１１−１７８１３８号公報Japanese Unexamined Patent Publication No. 2011-178138

しかしながら、このようなチップソーにあっては、台金に固着されるチップの溝部分の厚さを台金の厚さと同一に設定し得ることから、切削屑がチップの後方に排出され易くなるものの、溝部分の厚さが薄くても台金と同一厚さとなるため、チップによる切り幅を十分に狭くすることができず切断時の直線性が劣ったり、切断時の抵抗を受け易く切断作業の作業性が劣ると共に、切削屑自体の発生を十分に抑えることも難しい。特に、被切削材としての木材やボード等を切断する場合に、これらが顕著となり易くその改善が望まれているのが実情である。However, in such a tip saw, since the thickness of the groove portion of the tip fixed to the base metal can be set to be the same as the thickness of the base metal, cutting chips are easily discharged to the rear of the tip. , Even if the thickness of the groove is thin, it will be the same thickness as the base metal, so the cutting width by the tip cannot be narrowed sufficiently, the linearity at the time of cutting is inferior, and the cutting work is susceptible to resistance at the time of cutting. In addition to being inferior in workability, it is also difficult to sufficiently suppress the generation of cutting chips themselves. In particular, when cutting wood, board, etc. as a material to be cut , these tend to be noticeable, and improvement thereof is desired.

本発明は、このような事情に鑑みてなされたもので、その目的は、切り幅を十分に狭くして切断時の直線性を向上させると共に、切断抵抗を少なくして切断作業の作業性を向上させ、かつ切削屑の発生を少なくし得るチップソーを提供することにある。 The present invention has been made in view of such circumstances, and an object of the present invention is to sufficiently narrow the cutting width to improve the linearity at the time of cutting and to reduce the cutting resistance to improve the workability of the cutting work. It is an object of the present invention to provide a tipped saw which can be improved and generate less cutting chips.

かかる目的を達成すべく、本発明のうち請求項１に記載の発明は、中心位置に取付孔が形成された円盤状の台金と、該台金の外周縁部に形成した複数のチップ固着部に固着されたチップと、を備えたチップソーであって、前記台金は、所定板厚の本体部と、該本体部の外周側に当該本体部の板厚より薄く一体形成され複数の刃室と前記チップ固着部が形成された刃部と、を有し、前記チップは、前記台金の外径の大小や被切削材の種類に応じて、その刃先の最大幅が前記台金の本体部の板厚より大きいか同一かもしくは小さく設定されると共に、前記刃先が前記台金の左右側面に向けて傾斜する左刃用及び右刃用のチップと、前記刃先が前記台金の左右側面に向けて傾斜しない平刃用のチップとが一組となり、これらが前記台金の外周線に沿って複数組配設され、これら複数組全ての組の隣接するチップ間のピッチが前記台金の回転方向に向けて順に大きくなるように設定されていることを特徴とする。In order to achieve such an object, the invention according to claim 1 of the present invention includes a disk-shaped base metal having a mounting hole formed at a central position and a plurality of chips fixed to the outer peripheral edge of the base metal. A tip saw provided with a tip fixed to a portion, wherein the base metal is integrally formed with a main body portion having a predetermined plate thickness and an outer peripheral side of the main body portion thinner than the plate thickness of the main body portion, and a plurality of blades. It has a chamber and a blade portion on which the chip fixing portion is formed, and the chip has a maximum width of the cutting edge of the base metal according to the size of the outer diameter of the base metal and the type of the material to be cut. The tip for the left and right blades , which is set to be larger, the same, or smaller than the plate thickness of the main body and whose cutting edge is inclined toward the left and right side surfaces of the base metal, and the cutting edge is left and right of the base metal. A set of flat blade chips that do not incline toward the side surface is arranged, and a plurality of sets of these are arranged along the outer peripheral line of the base metal, and the pitch between adjacent chips of all these multiple sets is the base. It is characterized in that it is set so as to increase in order in the direction of rotation of gold.

また、請求項２に記載の発明は、前記各組の平刃用のチップが１個で前記左刃用のチップ及び右刃用のチップがそれぞれ１個〜３個に設定されていることを特徴とする。Further, according to the second aspect of the present invention, one tip for the flat blade of each set is set, and one to three tips for the left blade and one tip for the right blade are set respectively. It is a feature.

本発明のうち請求項１または２に記載の発明によれば、台金の本体部の外周側に本体部より薄く一体形成されて複数の刃室とチップ固着部を有する刃部を設け、チップが左刃用と右刃用を有して刃部のチップ固着部に所定の形態で固着されているため、台金の外周側に厚さの薄い刃部を位置させることができて、切り幅を十分に狭くして切断時の直線性を向上させることができると共に、切断抵抗を少なくして切断作業の作業性を向上させることができ、かつ切削屑の発生を少なくして、良好な切断面を容易に得ることができる。According to the invention according to claim 1 or 2 of the present invention, a blade portion formed integrally thinner than the main body portion on the outer peripheral side of the main body portion of the base metal and having a plurality of blade chambers and a chip fixing portion is provided, and the chip is provided. Has a left blade and a right blade, and is fixed to the tip fixing part of the blade in a predetermined form, so that a thin blade can be positioned on the outer peripheral side of the base metal and cut. The width can be sufficiently narrowed to improve the linearity at the time of cutting, the cutting resistance can be reduced to improve the workability of the cutting work, and the generation of cutting chips is reduced, which is good. The cut surface can be easily obtained.

また、チップが、複数の左刃及び右刃用のチップと一つの平刃用のチップが一組となり、これらが台金の外周線に沿って複数組配設されているため、切断時の直線性をより一層向上させることができると共に、良好な切断面が得られつつ負荷の少ない切断作業を容易に行うことができる。 In addition, since a plurality of left and right blade tips and one flat blade tip are arranged as a set, and a plurality of sets are arranged along the outer peripheral line of the base metal, at the time of cutting. The linearity can be further improved, and a cutting operation with a small load can be easily performed while obtaining a good cutting surface.

また、複数組の全ての組の隣接するチップ間のピッチが、台金の回転方向に沿って順に大きくなるように設定されているため、切削屑の後方側への排出を良好に行って、切断時の直線性やその作業性のより一層の向上等を図ることができる。 Further, since the pitch between the adjacent chips of all the sets of the plurality of sets is set so as to increase in order along the rotation direction of the base metal, the cutting chips can be discharged to the rear side satisfactorily. It is possible to further improve the linearity at the time of cutting and the workability thereof .

本発明に係わるチップソーの一実施形態を示す平面図Top view showing an embodiment of a tipped saw according to the present invention. 同その要部の拡大図Enlarged view of the main part 同その側面図Side view of the same 同平刃、左刃及び右刃用のチップの固着状態を示す図The figure which shows the sticking state of the tip for the flat blade, the left blade and the right blade 同各チップのピッチを示す図The figure which shows the pitch of each chip 同チップの固着状態を示す断面図Cross-sectional view showing the fixed state of the chip 同チップの固着状態の変形例を示す断面図Cross-sectional view showing a modified example of the fixed state of the chip

以下、本発明を実施するための形態を図面に基づいて詳細に説明する。
図１〜図６は、本発明に係わるチップソーの一実施形態を示している。図１に示すように、チップソー１は、全体が所定外径φで本体部２ａと刃部２ｂを有する台金２と、この台金２の外周縁部に後述する所定形態で固着された複数のチップ３を備えている。Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings.
1 to 6 show an embodiment of a tipped saw according to the present invention. As shown in FIG. 1, the tip saw 1 has a base metal 2 having a main body portion 2a and a blade portion 2b having a predetermined outer diameter φ as a whole, and a plurality of tip saws 1 fixed to the outer peripheral edge portion of the base metal 2 in a predetermined form described later. The chip 3 is provided.

前記台金２は、例えば炭素鋼板等のプレス加工もしくはレーザー切断加工で外径φの円盤状に形成されて、その中心位置には円形の取付孔６が形成されている。また、台金２は、図６に示すように、前記本体部２ａが板厚ｔ１（例えばｔ１＝０．９ｍｍ）に設定されると共に、前記刃部２ｂが板厚ｔ２（例えばｔ２＝０．７５ｍｍ）に設定され、この刃部２ｂに図１及び図２に示すように、チップ固着部４と刃室５が対となって多数形成されている。 The base metal 2 is formed in a disk shape having an outer diameter φ by, for example, pressing or laser cutting of a carbon steel plate or the like, and a circular mounting hole 6 is formed at the center position thereof. Further, as shown in FIG. 6, the base metal 2 has the main body portion 2a set to a plate thickness t1 (for example, t1 = 0.9 mm) and the blade portion 2b having a plate thickness t2 (for example, t2 = 0. It is set to 75 mm), and as shown in FIGS. 1 and 2, a large number of tip fixing portions 4 and blade chambers 5 are formed in pairs on the blade portion 2b.

そして、本体部２ａの板厚ｔ１と刃部２ｂの板厚ｔ２により、図６に示すように、本体部２ａの左右両側面（表裏面）の外周端２ａ１と刃部２ｂの左右両側面（表裏面）の内周端２ｂ１とが垂直もしくは若干傾斜した連接面７でそれぞれ連接されている。これにより、刃部２ｂが本体部２ａに段差状に連接されると共に、その厚さが本体部２ａに対して所定寸法（例えば０．１〜０．３ｍｍ）薄い板厚ｔ２の刃部２ｂが、本体部２ａの板厚方向の中央に立設状態とされている。 Then, due to the plate thickness t1 of the main body portion 2a and the plate thickness t2 of the blade portion 2b, as shown in FIG. 6, the outer peripheral ends 2a1 of the left and right side surfaces (front and back surfaces) of the main body portion 2a and the left and right side surfaces of the blade portion 2b ( The inner peripheral end 2b1 of the front and back surfaces) is connected to each other by a connecting surface 7 which is vertically or slightly inclined. As a result, the blade portion 2b is connected to the main body portion 2a in a stepped manner, and the blade portion 2b having a plate thickness t2 whose thickness is a predetermined dimension (for example, 0.1 to 0.3 mm) thinner than the main body portion 2a is formed. , It is in an upright state at the center of the main body 2a in the plate thickness direction.

この刃部２ｂの台金２へ形成は、外径φで刃部２ｂに相当する外周縁部に刃室５とチップ固着部４が形成された台金２の外周縁部の両側面を、所定幅ｗで所定深さ（前記所定寸法）で研磨することにより形成されている。この研磨幅ｗの内周端である刃部２ｂの内周端２ｂ１は、図２に示すように、刃室５の最も深い底５ａより台金２の中心Ｏ方向に寸法Ｌ２（図２及び図６参照）で位置するように設定されている。また、刃部２ｂに形成されるチップ固着部４は、図１に示すように、連続する七個のチップ固着部４ａ〜４ｇが一組（一ブロック）となり、このチップ固着部４ａ〜４ｇが台金２の外周縁に六組（六ブロック）形成されている。 The blade portion 2b is formed on the base metal 2 by forming both side surfaces of the outer peripheral edge portion of the base metal 2 having the blade chamber 5 and the chip fixing portion 4 formed on the outer peripheral edge portion corresponding to the blade portion 2b with the outer diameter φ. It is formed by polishing with a predetermined width w and a predetermined depth (the predetermined dimension). As shown in FIG. 2, the inner peripheral end 2b1 of the blade portion 2b, which is the inner peripheral end of the polishing width w, has a dimension L2 (FIGS. 2 and 2) from the deepest bottom 5a of the blade chamber 5 toward the center O of the base metal 2. It is set to be located in (see FIG. 6). Further, as shown in FIG. 1, in the chip fixing portion 4 formed on the blade portion 2b, seven continuous chip fixing portions 4a to 4g form a set (one block), and the chip fixing portions 4a to 4g are formed. Six sets (six blocks) are formed on the outer peripheral edge of the base metal 2.

このとき、各組の七個のチップ固着部４ａ〜４ｇは、図５に示すように、隣接するピッチ固着部４ａ〜４ｇ間の各ピッチｐ１〜ｐ７が全て異なる、すなわち不均一となるように設定されている。つまり、隣接する各チップ固着部４ａ〜４ｇに後述する如く固着される各チップ３の刃先３ｅと、台金２の中心０を結ぶ直線間のピッチｐ１〜ｐ７が、全て同一とならず、回転方向イに向けて順に大きくなるように（ｐ１＞ｐ２＞ｐ３＞ｐ４＞ｐ５＞ｐ６＞ｐ７でｐ１＋ｐ２＋ｐ３＋ｐ４＋ｐ５＋ｐ６＋ｐ７＝６０度）に設定されている。 At this time, as shown in FIG. 5, the seven chip fixing portions 4a to 4g of each set are so that the pitches p1 to p7 between the adjacent pitch fixing portions 4a to 4g are all different, that is, non-uniform. It is set. That is, the pitches p1 to p7 between the cutting edge 3e of each chip 3 fixed to the adjacent chip fixing portions 4a to 4g and the straight line connecting the center 0 of the base metal 2 are not all the same and rotate. It is set to increase in order in the direction a (p1> p2> p3> p4> p5> p6> p7 and p1 + p2 + p3 + p4 + p5 + p6 + p7 = 60 degrees).

なお、各組の七個のチップ固着部４ａ〜４ｇの形成は、例えばプレス加工もしくはレーザー切断加工で台金素材を成形する際に同時に形成されることになる。また、前記台金２の本体部２ａの径方向の略中央部と外周部には、図１に示すように、レーザー加工により両側面に貫通する状態のスリットからなる歪み吸収溝８が円周方向に等間隔で複数個（図１では合計１２個）形成されている。 It should be noted that the formation of the seven chip fixing portions 4a to 4g of each set is simultaneously formed when the base metal material is formed by, for example, press processing or laser cutting processing. Further, as shown in FIG. 1, a strain absorbing groove 8 formed of slits penetrating both side surfaces by laser processing is circumferentially formed in the substantially central portion and the outer peripheral portion in the radial direction of the main body portion 2a of the base metal 2. A plurality (12 in total in FIG. 1) are formed at equal intervals in the direction.

一方、前記チップ３は、例えば超硬合金で形成され、図２に示すように、台金２の回転方向イの前方側となる掬い面３ａと、掬い面３ａの先端に後方側に連接する状態で設けられた先端面３ｂと、左右のアサリ面を形成する側面３ｃ１、３ｃ２（３ｃ２は図４参照）と、前記先端面３ｂの後端と掬い面３ａの下端との間に略Ｊ字（もしくは略Ｌ字）形状に形成された固着面３ｄ等を有している。そして、掬い面３ａの上端と先端面３ｂの前端とで刃先３ｅが形成されている。 On the other hand, the tip 3 is formed of, for example, a cemented carbide, and as shown in FIG. 2, is connected to the scooping surface 3a on the front side in the rotation direction a of the base metal 2 and the tip of the scooping surface 3a on the rear side. A substantially J-shape between the tip surface 3b provided in the state, the side surfaces 3c1 and 3c2 (see FIG. 4 for 3c2) forming the left and right clam surfaces, and the rear end of the tip surface 3b and the lower end of the scooping surface 3a. It has a fixed surface 3d or the like formed in a (or substantially L-shaped) shape. The cutting edge 3e is formed by the upper end of the scooping surface 3a and the front end of the tip surface 3b.

また、チップ３は、前記掬い面３ａを台金２の板厚方向において、図３及び図４に示すように、所定角度θ２（例えばθ２＝１５度）傾斜する傾斜面とすることにより、左側面３ｃ１が右側面３ｃ２よりも高くなる「左刃」と、この「左刃」と逆で右側面３ｃ２が左側面３ｃ１よりも高くなる「右刃」と、前記角度θ２＝０度で前記先端面３ｂを台金２の左右側面に向けて傾斜しない平坦とした「平刃」を形成するようになっている。なお、図４に示すように、「平刃」用のチップ３の刃先３ｅの高さは、「左刃」及び「右刃」用のチップ３の刃先３ｅの高さよりも寸法ｈ（例えばｈ＝０．１５ｍｍ）低くなるように設定されている。 Further, the chip 3 has a left side by making the scooping surface 3a an inclined surface inclined by a predetermined angle θ2 (for example, θ2 = 15 degrees) in the plate thickness direction of the base metal 2 as shown in FIGS. 3 and 4. The "left blade" whose surface 3c1 is higher than the right side surface 3c2, and the "right blade" whose right side surface 3c2 is higher than the left side surface 3c1 which is the opposite of this "left blade", and the tip at the angle θ2 = 0 degrees. A flat "flat blade" is formed in which the surface 3b is not inclined toward the left and right side surfaces of the base metal 2. As shown in FIG. 4, the height of the cutting edge 3e of the tip 3 for the "flat blade" is larger than the height of the cutting edge 3e of the tip 3 for the "left blade" and the "right blade" (for example, h). = 0.15 mm) It is set to be lower.

前記「左刃」「右刃」及び「平刃」用の各チップ３は、その両側面３ｃ１、３ｃ２間の寸法（幅）が、底面３ｆ側が狭く前記刃先３ｅ側が所定寸法大きく、すなわち、図３に示すアサリ角θ３（例えばθ３＝３度）を有している。また、図４に示す各チップ３の刃先３ｅの幅寸法（最大幅）ｔ３は、前記台金２（本体部２ａ）の板厚ｔ１より所定寸法（例えば０．２〜０．３ｍｍ）大きく（ｔ３＞ｔ１）設定されている。さらに、前記「左刃」と「右刃」用のチップ３の刃先３ｅの幅寸法ｔ３は、同一（例えば１．２ｍｍ）に設定され、「平刃」用のチップ３の刃先３ｅの幅寸法ｔ３は、「左刃」や「右刃」用のチップ３に対して若干小さく（例えばｔ３＝１．１ｍｍ）設定されている。 The dimensions (width) between the side surfaces 3c1 and 3c2 of each of the "left blade", "right blade" and "flat blade" chips 3 are narrow on the bottom surface 3f side and large on the blade edge 3e side, that is, the figure. It has a clam angle θ3 (for example, θ3 = 3 degrees) shown in 3. Further, the width dimension (maximum width) t3 of the cutting edge 3e of each chip 3 shown in FIG. 4 is larger than the plate thickness t1 of the base metal 2 (main body portion 2a) by a predetermined dimension (for example, 0.2 to 0.3 mm) (for example, 0.2 to 0.3 mm). t3> t1) It is set. Further, the width dimension t3 of the cutting edge 3e of the tip 3 for the "left blade" and the "right blade" is set to be the same (for example, 1.2 mm), and the width dimension of the cutting edge 3e of the tip 3 for the "flat blade" is set. t3 is set slightly smaller than the tip 3 for the “left blade” and the “right blade” (for example, t3 = 1.1 mm).

このように構成された各チップ３は、図１及び図５に示すように、台金２の刃部２ｂのチップ固着部４にそれぞれ固着されている。すなわち、一個の「平刃」用のチップ３と、それぞれ三個の「左刃」及び「右刃」用のチップ３を、図１に示すように、台金２の反回転方向イに沿って、図１で「平刃」をＡ、「左刃」をＢ、「右刃」をＣとした場合、Ａ−Ｂ−Ｃ−Ｂ−Ｃ−Ｂ−Ｃ−Ａ・・・のように固着されている。また、図２及び図６に示すように、刃部２ｂのチップ固着部４に固着された各チップ３の底面３ｆと刃室５の底５ａ間の寸法Ｌ１は、例えばＬ１＝１〜５ｍｍに設定されて、各チップ３の下部に厚さの薄い刃部２ｂが必ず位置するように設定されている。 As shown in FIGS. 1 and 5, each of the chips 3 configured in this way is fixed to the chip fixing portion 4 of the blade portion 2b of the base metal 2, respectively. That is, one tip 3 for the "flat blade" and three tips 3 for the "left blade" and the "right blade", respectively, are arranged along the counter-rotation direction a of the base metal 2 as shown in FIG. In FIG. 1, when the "flat blade" is A, the "left blade" is B, and the "right blade" is C, it is as shown in ABCBCBCABCA ... It is stuck. Further, as shown in FIGS. 2 and 6, the dimension L1 between the bottom surface 3f of each tip 3 fixed to the tip fixing portion 4 of the blade portion 2b and the bottom 5a of the blade chamber 5 is, for example, L1 = 1 to 5 mm. It is set so that the thin blade portion 2b is always located at the bottom of each chip 3.

つまり、一個の「平刃」用のチップ３とそれぞれ三個の「左刃」及び「右刃」用のチップ３の合計七個のチップ３を一組とし、これが前記台金２の外周線に沿って各組の各チップ固着部４ａ〜４ｇにそれぞれ固着されている。これにより、前述したように、台金２の刃部２ｂに形成される六組の七個の隣接するチップ固着部４ａ〜４ｇが不均一ピッチに設定されていることから、各組の連続する七個の各チップ３もそのピッチｐ１〜ｐ７が不均一状態で固着されることになる。 That is, a total of seven chips 3 including one "flat blade" chip 3 and three "left blade" and "right blade" chips 3 respectively are made into a set, and this is the outer peripheral line of the base metal 2. It is fixed to each chip fixing portion 4a to 4g of each set along the above. As a result, as described above, the six sets of seven adjacent chip fixing portions 4a to 4g formed on the blade portion 2b of the base metal 2 are set to non-uniform pitch, so that each set is continuous. The pitches p1 to p7 of each of the seven chips 3 are also fixed in a non-uniform state.

次に、前記チップソー１の製造方法の一例について説明する。先ず、取付孔６を有する本体部２ａと、この本体部２ａの外周縁に刃室５及びチップ固着部４を有する台金素材を、炭素鋼板のプレス加工もしくはレーザー切断加工により成形する。そして、この成形した台金素材の外周縁部の両側面（表裏面）を研磨して、本体部２ａの外周側に前記刃部２ｂを形成する。また、超硬合金で成形され前記「左刃」「右刃」及び「平刃」用の各チップ３を形成し得る所定形状に成形されたチップ素材を所定数準備する。 Next, an example of the method for manufacturing the tip saw 1 will be described. First, a main body portion 2a having a mounting hole 6 and a base metal material having a blade chamber 5 and a chip fixing portion 4 on the outer peripheral edge of the main body portion 2a are formed by press working or laser cutting of a carbon steel plate. Then, both side surfaces (front and back surfaces) of the outer peripheral edge portion of the molded base metal material are polished to form the blade portion 2b on the outer peripheral side of the main body portion 2a. Further, a predetermined number of chip materials formed of cemented carbide and formed into a predetermined shape capable of forming each of the chips 3 for the "left blade", "right blade" and "flat blade" are prepared.

そして、熱処理した台金２の刃部２ｂの六組の各七個のチップ固着部４ａ〜４ｇに同一形状の各チップ３をそれぞれ固着する。このとき、例えば治具に垂直状態でセットされた台金２の刃部２ｂのチップ固着部４に、準備したチップ素材の固着面をセットし、刃部２ｂのチップ固着部４とチップ素材の固着面との接触部分にロー材を当接させた状態で、接触部分を高周波の誘導加熱を利用して所定温度まで加熱する。 Then, each chip 3 having the same shape is fixed to each of the seven chip fixing portions 4a to 4g of the six sets of the blade portion 2b of the heat-treated base metal 2. At this time, for example, the fixing surface of the prepared chip material is set on the chip fixing portion 4 of the blade portion 2b of the base metal 2 set vertically on the jig, and the chip fixing portion 4 of the blade portion 2b and the chip material With the brazing material in contact with the contact portion with the fixed surface, the contact portion is heated to a predetermined temperature by using high frequency induction heating.

これにより、ロー材が溶融してチップ固着部４とチップ素材の固着面との間に進入して、チップ素材が刃部２ｂのチップ固着部４にロー付け固着される。この作業を、台金２を回転させつつ各チップ固着部４にチップ素材を順にロー付けすることにより、台金２の刃部２ｂの全ての組の全てのチップ固着部４にチップ素材がそれぞれロー付け固着される。 As a result, the brazed material melts and enters between the chip fixing portion 4 and the fixing surface of the chip material, and the chip material is brazed and fixed to the chip fixing portion 4 of the blade portion 2b. In this work, the chip material is brazed to each chip fixing portion 4 in order while rotating the base metal 2, so that the chip material is attached to all the chip fixing portions 4 of all the sets of the blade portions 2b of the base metal 2. Brazed and fixed.

全てのチップ固着部４にチップ素材がロー付け固着されたら、このチップ素材が固着された台金２を研磨機にセットし、各チップ素材を研磨する。この研磨は、各チップ素材の掬い面、先端面、両側面等を研磨することで行われる。このとき、チップ素材の先端面の研磨は、図２に示す角度θ１（例えばθ１＝１５度）で研磨し、チップ素材の掬い面の研磨は、前記「平刃」用のチップ素材の場合は、平坦に研磨し、前記「左刃」と「右刃」用のチップ素材の場合は、前記角度θ２で斜めに研磨する。 When the chip material is brazed and fixed to all the chip fixing portions 4, the base metal 2 to which the chip material is fixed is set in the polishing machine, and each chip material is polished. This polishing is performed by polishing the scooping surface, the tip surface, both side surfaces, etc. of each chip material. At this time, the tip surface of the chip material is polished at an angle θ1 (for example, θ1 = 15 degrees) shown in FIG. 2, and the scooping surface of the chip material is polished in the case of the chip material for the “flat blade”. , And in the case of the chip material for the "left blade" and the "right blade", polish it diagonally at the angle θ2.

また、各チップ素材の各面の研磨は、研磨部位毎に、すなわち例えば掬い面を順に研磨した後に先端面を順に研磨し、その後両側面を順に研磨すること等で行われる。そして、各面を研磨することで「平刃」「左刃」「右刃」用のチップ３が刃部２ｂに所定の形態で固着されたチップソー素材が得られ、このチップソー素材に対して塗装や印刷等の仕上げ処理することでチップソー１が製造される。つまり、前記チップソー１の場合、本体部２ａの外周縁部に段差状の刃部２ｂを連接状態で一体に設けて、その厚さを本体部２ａより薄くすると共に、刃部２ｂの各チップ固着部４に、連続する七個のチップ３を不均一ピッチで六組固着するようにしている。 Further, each surface of each chip material is polished for each polishing site, that is, for example, the scooping surface is polished in order, the tip surface is polished in order, and then both side surfaces are polished in order. Then, by polishing each surface, a tip saw material in which the tips 3 for the "flat blade", "left blade", and "right blade" are fixed to the blade portion 2b in a predetermined form is obtained, and the tip saw material is coated. The tip saw 1 is manufactured by finishing processing such as printing and printing. That is, in the case of the tip saw 1, a stepped blade portion 2b is integrally provided on the outer peripheral edge portion of the main body portion 2a in a connected state, the thickness thereof is made thinner than the main body portion 2a, and each tip of the blade portion 2b is fixed. Six sets of seven consecutive chips 3 are fixed to the portion 4 at a non-uniform pitch.

このように前記チップソー１によれば、台金２が本体部２ａの外周側に本体部２ａより薄く一体形成されて、複数の刃室５とチップ固着部４を有する刃部２ｂを有し、チップ３が「左刃」と「右刃」及び「平刃」用として刃部２ｂのチップ固着部４に所定の形態で固着されているため、本体部２ａの外周側に本体部２ａより厚さの薄い刃部２ｂを位置させることができて、切り幅を狭くして切断時の直線性を向上させることができると共に、切断抵抗を少なくして切断作業の作業性を向上させることができ、かつ切削屑の発生を少なくして、良好な切断面を容易に得ることができる。 As described above, according to the tip saw 1, the base metal 2 is integrally formed thinner than the main body portion 2a on the outer peripheral side of the main body portion 2a, and has a blade portion 2b having a plurality of blade chambers 5 and a chip fixing portion 4. Since the tip 3 is fixed to the tip fixing portion 4 of the blade portion 2b for the "left blade", "right blade" and "flat blade" in a predetermined form, it is thicker than the main body portion 2a on the outer peripheral side of the main body portion 2a. The thin blade portion 2b can be positioned, the cutting width can be narrowed to improve the linearity at the time of cutting, and the cutting resistance can be reduced to improve the workability of the cutting work. Moreover, it is possible to easily obtain a good cut surface by reducing the generation of cutting chips.

また、板厚ｔ２の刃部２ｂの内周端２ｂ１が、板厚ｔ１の本体部２ａの左右両側面の刃室５の底５ａより所定寸法台金２の中心０側に位置する外周端２ａ１と連接面７により段差状にそれぞれ連接されて、本体部２ａの板厚ｔ１方向の中央に位置しているため、台金２の左右両側面に刃部２ｂを均一な連接面（段差）を介して一体形成でき、切断時の直線性や切断作業の作業性の一層の向上等を図ることができる。 Further, the inner peripheral end 2b1 of the blade portion 2b having the plate thickness t2 is located on the center 0 side of the base metal 2 having a predetermined dimension from the bottom 5a of the blade chamber 5 on both left and right side surfaces of the main body portion 2a having the plate thickness t1. Since they are connected to each other in a stepped shape by the connecting surface 7 and are located at the center of the main body portion 2a in the plate thickness t1 direction, the blade portions 2b are uniformly connected to each other on the left and right side surfaces of the base metal 2. It can be integrally formed through the holes, and the linearity at the time of cutting and the workability of the cutting work can be further improved.

また、「左刃」「右刃」「平刃」用のチップ３が、台金２の回転方向イに対して所定の形態でチップ固着部４にそれぞれ固着されているため、各刃の特徴を生かしながら、被切削材としての例えば木材を効率的に切削できると共に、一層良好な切断面を得ることができる。特に、「左刃」「右刃」用及び「平刃」用のチップ３がチップ固着部４にそれぞれ固着された際に、各チップ３の底面３ｆと刃室５の底５ａとの間に所定の寸法Ｌ１が確保されているため、各チップ３の底面３ｆ下部に板厚ｔ２の薄い刃部２を必ず位置させることができて、切削屑のつまりが抑制されて、その後方への排出をスムーズに行うことができる。Further, since the chips 3 for the "left blade", "right blade", and "flat blade" are respectively fixed to the chip fixing portion 4 in a predetermined form with respect to the rotation direction a of the base metal 2, the characteristics of each blade. For example, wood as a material to be cut can be efficiently cut and a better cut surface can be obtained while making the best use of the above. In particular, when the tips 3 for the "left blade", "right blade" and "flat blade" are fixed to the tip fixing portion 4, respectively, between the bottom surface 3f of each tip 3 and the bottom 5a of the blade chamber 5. Since the predetermined dimension L1 is secured, the thin blade portion 2 having a plate thickness t2 can be always positioned under the bottom surface 3f of each chip 3, the clogging of the cutting chips is suppressed, and the cutting chips are discharged to the rear. Can be done smoothly.

さらに、チップ３が、三個の「左刃」及び「右刃」用のチップ３と一個の「平刃」用のチップ３の合計七個のチップ３が一組となり、これらが台金２の外周線に沿って六組配設されているため、切断時の直線性をより一層向上させることができると共に、良好な切断面と負荷の少ない切断作業を行うことができる。 Further, the chips 3 are a set of seven chips 3 in total, that is, three chips 3 for "left blade" and "right blade" and one chip 3 for "flat blade", and these are the base metal 2. Since six sets are arranged along the outer peripheral line of the above, the linearity at the time of cutting can be further improved, and a good cutting surface and a cutting work with a small load can be performed.

特に、各組のチップ３が、隣接するチップ３間のピッチｐ１〜ｐ７が異なるように、つまり、隣接するチップ３間のピッチｐ１〜ｐ７が、台金２の回転方向イに沿って順に大きくなるように設定されているため、切断作業時に発生する切り屑を回転方向イの後方側に効率的に排出しつつ切断できて、チップソー１の直線性や切断作業の作業性のより一層の向上等を図ることができる。これらにより、前記チップソー１を、例えば被切削材としての木材の切断に使用した場合には、木材をその繊維の方向に係わらず、直線的で軽く、かつ綺麗な切断面を得つつ切断することが可能になる。 In particular, the chips 3 of each set have different pitches p1 to p7 between the adjacent chips 3, that is, the pitches p1 to p7 between the adjacent chips 3 increase in order along the rotation direction a of the base metal 2. Since it is set to be, it is possible to cut while efficiently discharging the chips generated during the cutting work to the rear side in the rotation direction a, further improving the linearity of the tip saw 1 and the workability of the cutting work. Etc. can be planned. As a result, when the tip saw 1 is used for cutting wood as a material to be cut, for example, the wood is cut while obtaining a straight, light and clean cut surface regardless of the direction of the fibers. Becomes possible.

ところで、前記実施形態においては、チップ３の幅寸法（最大幅）ｔ３を台金２の本体部２ａの板厚ｔ１より大きく設定したが、本発明はこれに限定されず、図７に示すように構成することもできる。すなわち、図７（ａ）に示すように、チップ３の最大幅となる刃先の幅寸法ｔ３を台金２の本体部２ａの板厚ｔ１と同一（ｔ３＝ｔ１）に設定したり、図７（ｂ）に示すように、チップ３の幅寸法ｔ３を台金２の板厚ｔ１より小さく（ｔ３＜ｔ１）設定する。 By the way, in the above-described embodiment, the width dimension (maximum width) t3 of the chip 3 is set to be larger than the plate thickness t1 of the main body portion 2a of the base metal 2, but the present invention is not limited to this, as shown in FIG. It can also be configured to. That is, as shown in FIG. 7A, the width dimension t3 of the cutting edge, which is the maximum width of the chip 3, is set to be the same as the plate thickness t1 of the main body 2a of the base metal 2 (t3 = t1), or FIG. As shown in (b), the width dimension t3 of the chip 3 is set to be smaller than the plate thickness t1 of the base metal 2 (t3 <t1).

このとき、図７（ａ）のチップ３の幅寸法ｔ３と台金２の板厚ｔ１が同一の場合は、切断時の台金２（チップソー１）の振れ（ブレ）を少なくできると共に、綺麗な切断面が得られる。また、図７（ｂ）のチップ３の幅寸法ｔ３が台金２の板厚ｔ１より小さい場合は、切断時に台金２と被切削材が擦れる状態となり、台金２の振れを極力小さくすることができる。 At this time, when the width dimension t3 of the tip 3 in FIG. 7A and the plate thickness t1 of the base metal 2 are the same, the runout (blur) of the base metal 2 (tip saw 1) at the time of cutting can be reduced and is clean. A sharp cut surface can be obtained. Further, when the width dimension t3 of the chip 3 in FIG. 7B is smaller than the plate thickness t1 of the base metal 2, the base metal 2 and the material to be cut rub against each other during cutting, and the runout of the base metal 2 is minimized. be able to.

このように、チップ３の幅ｔ３と台金２の板厚ｔ１は、被切削材の種類や台金２の外径φの大小に応じて、最適な形態が使用される。この図７（ａ）（ｂ）においては、チップ３の幅寸法ｔ３が刃先３ｅ（先端面３ｂ先端）と固着部３ｄの全域において同一、すなわちアサリ角θ３＝０で示しているが、図６と同様に、チップ３の両側面３ｃ１、３ｃ２に所定のアサリ角θ３を設定して、刃先３ｅの最大幅寸法ｔ３を台金２の本体部２ａの板厚ｔ１と同一かもしくは小さくしても良い。 As described above, the width t3 of the chip 3 and the plate thickness t1 of the base metal 2 are optimally formed according to the type of the material to be cut and the size of the outer diameter φ of the base metal 2. In FIGS. 7A and 7B, the width dimension t3 of the tip 3 is the same in the entire area of the cutting edge 3e (tip surface 3b tip) and the fixing portion 3d, that is, the clam angle θ3 = 0, but FIG. Similarly, even if a predetermined set angle θ3 is set on both side surfaces 3c1 and 3c2 of the chip 3, the maximum width dimension t3 of the cutting edge 3e is the same as or smaller than the plate thickness t1 of the main body portion 2a of the base metal 2. good.

また、前記実施形態のチップソー１の各構成は、木工用に限らず、例えば前記超硬チップに代えてＰＣＤダイヤモンド結晶体を使用したチップソー１に適用して、例えば窯業系サイディングボード等のボードの切断にも使用することができる。このようなボードの場合、主原料としてセメント質原料及び繊維質原料を用いて板状に成形され建築物の外装板として使用されるが、チップソーによる切断的に粉塵が多く発生し易い。そこで、本発明に係わる構成のチップソー１を使用すれば、従来のチップソーより刃厚（前記幅寸法ｔ３）を薄くできるため、前述した効果の他に、粉塵の量を減少させることができて、対環境作業性を向上させることができるという効果を奏することができる。 Further, each configuration of the tip saw 1 of the above embodiment is not limited to woodworking, and is applied to, for example, a tip saw 1 using a PCD diamond crystal instead of the cemented carbide tip, for example, a board such as a ceramic siding board. It can also be used for cutting. In the case of such a board, it is formed into a plate shape using a cementum raw material and a fibrous raw material as main raw materials and used as an exterior plate of a building, but a large amount of dust is likely to be generated by cutting with a tip saw. Therefore, if the tip saw 1 having the configuration according to the present invention is used, the blade thickness (the width dimension t3) can be made thinner than that of the conventional tip saw, so that the amount of dust can be reduced in addition to the above-mentioned effect. The effect of improving workability with the environment can be achieved.

なお、前記実施形態においては、「平刃」「左刃」及び「右刃」用の三種類のチップ３を七個、所定の形態で六組連設することにより、本体部２ａの外周側に刃部２ｂを形成したが、本発明はこの構成に限定されず、例えば「左刃」と「右刃」用のチップ３をそれぞれ二個もしくは一個として、合計五個もしくは三個のチップ３を一組としても良い。 In the above-described embodiment, seven chips 3 of three types for "flat blade", "left blade", and "right blade" are connected in a row in a predetermined form, and six sets are connected to the outer peripheral side of the main body portion 2a. However, the present invention is not limited to this configuration, for example, two or one chips 3 for the "left blade" and the "right blade" are used, respectively, and a total of five or three chips 3 are formed. May be a set .

さらに、前記実施形態においては、台金２にスリット状の歪み吸収溝８を設けたが、例えば前記歪み吸収溝８間に円形形状等の歪みや振れ防止用の適宜の開口を複数個設けることもできる。また、前記実施形態においては、台金２の外周縁部の両側面を研磨することで刃部２ｂを形成したが、台金２の一方の側面のみを研磨して刃部２ｂを形成しても良いし、刃部２ｂの形成も研磨に限らずプレス加工等を利用しても良い。また、前記実施形態における、台金２の刃部２ｂの刃室５やチップ固着部４の形状、チップ３自体の形状等も一例であって、本発明の各発明に係わる要旨を逸脱しない範囲において適宜の構成を採用することができる。 Further, in the above-described embodiment, the slit-shaped strain absorbing groove 8 is provided in the base metal 2, but for example, a plurality of appropriate openings for preventing distortion or runout such as a circular shape are provided between the strain absorbing grooves 8. You can also. Further, in the above embodiment, the blade portion 2b is formed by polishing both side surfaces of the outer peripheral edge portion of the base metal 2, but only one side surface of the base metal 2 is polished to form the blade portion 2b. Alternatively, the forming of the blade portion 2b is not limited to polishing, and press working or the like may be used. Further, the shape of the blade chamber 5 and the tip fixing portion 4 of the blade portion 2b of the base metal 2 and the shape of the tip 3 itself in the above embodiment are also examples, and are within the range not deviating from the gist of each invention of the present invention. An appropriate configuration can be adopted in.

本発明は、木材や各種ボードの切断用チップソーに限らず、回転することで各種被切断物を切断する全てのチップソーに利用できる。 The present invention is not limited to cutting tipped saws for wood and various boards, but can be used for all tipped saws that cut various objects to be cut by rotating.

１・・・チップソー、２・・・台金、２ａ・・・本体部、２ａ１・・・外周端、２ｂ・・・刃部、２ｂ１・・・内周端、３・・・チップ、３ａ・・・掬い面、３ｂ・・・先端面、３ｅ・・・刃先、３ｆ・・・底面、４、４ａ〜４ｇ・・・チップ固着部、５・・・刃室、５ａ・・・底、６・・・取付孔、７・・・連接面、８・・・歪み吸収溝、ｔ１・・・本体部の板厚、ｔ２・・・刃部の板厚、ｔ３・・・チップの幅寸法、イ・・・回転方向、ｐ１〜ｐ７・・・ピッチ。 1 ... Tipped saw, 2 ... Base metal, 2a ... Main body, 2a1 ... Outer edge, 2b ... Blade, 2b1 ... Inner peripheral edge, 3 ... Tip, 3a ...・・ Scooping surface, 3b ・・・ Tip surface, 3e ・・・ Blade tip, 3f ・・・ Bottom surface, 4, 4a-4g ・・・ Chip fixing part, 5 ・・・ Blade chamber, 5a ・・・ Bottom, 6 ... Mounting hole, 7 ... Connecting surface, 8 ... Strain absorption groove, t1 ... Main body plate thickness, t2 ... Blade plate thickness, t3 ... Chip width dimension, B ... rotation direction, p1 to p7 ... pitch.

Claims

A tip saw including a disk-shaped base metal having a mounting hole formed at a central position and chips fixed to a plurality of chip fixing portions formed on the outer peripheral edge of the base metal.
The base metal has a main body portion having a predetermined plate thickness, and a blade portion integrally formed on the outer peripheral side of the main body portion to be thinner than the plate thickness of the main body portion to form a plurality of blade chambers and a chip fixing portion. And
The maximum width of the cutting edge of the tip is set to be larger, the same, or smaller than the plate thickness of the main body of the base metal, depending on the size of the outer diameter of the base metal and the type of the material to be cut. A pair of inserts for left and right blades whose cutting edges are inclined toward the left and right sides of the base metal and inserts for flat blades whose cutting edges are not inclined toward the left and right sides of the base metal are paired. There are a plurality of sets disposed along the peripheral line of the base metal, that the pitch between adjacent chips of the plurality of sets all sets is set so as sequentially increases toward the rotation direction of the base metal A characteristic tip saw.

The tip saw according to claim 1, wherein each set of the tip for the flat blade is set to one, and the tip for the left blade and the tip for the right blade are set to one to three, respectively.