JPH0715224U - Rotating saw for metal cutting - Google Patents
Rotating saw for metal cuttingInfo
- Publication number
- JPH0715224U JPH0715224U JP4448593U JP4448593U JPH0715224U JP H0715224 U JPH0715224 U JP H0715224U JP 4448593 U JP4448593 U JP 4448593U JP 4448593 U JP4448593 U JP 4448593U JP H0715224 U JPH0715224 U JP H0715224U
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- tip
- blade
- mountain
- flat
- blade tip
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Abstract
(57)【要約】
［目的］ 大きな負荷が加わる平刃チップを山刃チップ
の反回転側に複数個連続させて形成することにより、切
断性能を長期に亘って良好に維持する。
［構成］ 円板状の台金と、先端部が正面視台形状に形
成された超硬製の山刃チップと、先端部が正面視矩形状
に且つ歯高が山刃チップよりも低く形成された超硬製の
平刃チップとを設け、山刃チップの反回転側に該山刃チ
ップよりも多い数の平刃チップを連続させてなるチップ
セットを、前記台金の外周に複数セット設ける。
(57) [Summary] [Purpose] A plurality of flat blade tips to which a large load is applied are continuously formed on the counter-rotation side of the mountain blade tips to maintain good cutting performance for a long period of time. [Structure] A disk-shaped base metal, a cemented carbide mountain blade tip whose front end is formed in a trapezoidal shape when viewed from the front, a distal end formed in a rectangular shape in front view, and a tooth height lower than that of the mountain blade tip And a flat blade tip made of super hard carbide, and a plurality of chip sets, in which a larger number of flat blade tips than the mountain blade tips are continuously provided on the counter rotation side of the mountain blade tip, are set on the outer periphery of the base metal. Set up.
Description
【０００１】[0001]
本考案は、粘性が高く且つ熱伝導率の低い金属、例えばオーステナイト系ステ ンレス鋼（ＳＵＳ３０４，ＳＵＳ３１６）を切断するに適した回転鋸に関するも のである。 The present invention relates to a rotary saw suitable for cutting a metal having high viscosity and low thermal conductivity, for example, austenitic stainless steel (SUS304, SUS316).
【０００２】[0002]
従来の技術として図１１及び図１２に示すものがあった。図１１及び図１２に おいて、１は回転鋸であり、円板状の台金２の外周部に半径方向に突出する刃形 の歯台３を周方向に所定ピッチで形成し、各歯台３の回転側の面（右面）に直方 体状の超硬チップを固着し、該超硬チップを刃先研削して山刃チップ４と平刃チ ップ５とを周方向に交互に形成する。上記山刃チップ４は、先端部が正面視台形 状に形成され、先端逃げ角αが１０度に、すくい角γが１０度に、側面向心角ε が０.５度に形成され、また先端切刃４ａの刃厚Ｔ1が平刃チップ５の先端切刃５ ａの刃厚Ｔ2の１／３に形成されている。また、上記平刃チップ５は、先端部が 正面視矩形状に形成されるとともに、先端切刃５ａが山刃チップ４の先端切刃４ ａよりも０.２mm〜０.３mm低く形成され、先端逃げ角α、すくい角γ及び側面向 心角εは山刃チップ４のものと等角に形成されている。 As a conventional technique, there is one shown in FIGS. 11 and 12. In FIG. 11 and FIG. 12, 1 is a rotary saw, and a tooth-shaped tooth base 3 protruding in the radial direction is formed on the outer peripheral portion of a disk-shaped base metal 2 at a predetermined pitch in the peripheral direction, and each tooth is A rectangular parallelepiped carbide tip is fixed to the rotation side surface (right side) of the table 3, and the cemented carbide tip is ground to form mountain blade tips 4 and flat blade tips 5 alternately in the circumferential direction. To do. The tip of the mountain blade tip 4 is formed in a trapezoidal shape when viewed from the front, the tip clearance angle α is 10 degrees, the rake angle γ is 10 degrees, and the side face centripetal angle ε is 0.5 degrees. The blade thickness T1 of the tip cutting edge 4a is formed to be 1/3 of the blade thickness T2 of the tip cutting edge 5a of the flat blade tip 5. Further, the flat blade tip 5 has a tip portion formed in a rectangular shape in a front view, and a tip cutting edge 5a is formed lower than the tip cutting edge 4a of the mountain edge tip 4 by 0.2 mm to 0.3 mm. The tip clearance angle α, the rake angle γ, and the side surface centripetal angle ε are formed to be equiangular with that of the mountain tip 4.
【０００３】[0003]
上記従来のものは、山刃チップ４と平刃チップ５とを周方向に交互に形成する ようにしていたので、所定の平刃チップ５が欠損すると、残余の平刃チップ５に 大きな負荷が加わり、これらの損傷が促進され、耐久性が乏しくなる欠点があっ た。また、上記各山刃チップ４、平刃チップ５の先端逃げ角α及びすくい角γが １０度に形成されていたので、刃先角βが小さくなり、刃先の強度が低下して欠 損し易く、切断寿命が短くなる欠点があった。本考案は、上記欠点を解消した新 規な金属切断用回転鋸を得ることを目的とする。 In the above-mentioned conventional one, the mountain blade tips 4 and the flat blade tips 5 are alternately formed in the circumferential direction. Therefore, if a predetermined flat blade tip 5 is lost, a large load is applied to the remaining flat blade tips 5. In addition, there is a drawback that these damages are accelerated and durability becomes poor. Further, since the tip clearance angle α and the rake angle γ of each of the above-mentioned mountain blade tip 4 and flat blade tip 5 are formed to be 10 degrees, the blade edge angle β becomes small, and the strength of the blade tip is lowered, and the tip is easily damaged. There was a drawback that the cutting life was shortened. An object of the present invention is to provide a new rotary saw for metal cutting which solves the above drawbacks.
【０００４】[0004]
本考案は、上記目的を達成するために以下の如く構成したものである。即ち、 円板状の台金と、先端部が正面視台形状に形成された超硬製の山刃チップと、先 端部が正面視矩形状に且つ歯高が山刃チップよりも低く形成された超硬製の平刃 チップとを設け、山刃チップの反回転側に該山刃チップよりも多い数の平刃チッ プを連続させてなるチップセットを、前記台金の外周に複数セット設ける構成に したものである。前記山刃チップの先端部及び平刃チップの先端部のすくい面は 共に０度以下のすくい角にすることが好ましい。また、前記チップセット間に前 記山刃チップ及び平刃チップとは異なる刃形のチップを介在させてもよい。 The present invention is configured as follows to achieve the above object. In other words, a disk-shaped base metal, a cemented carbide tip with a tip formed in a trapezoidal shape in front view, a tip in a rectangular shape in front view, and a tooth height lower than that of the tip. And a flat-blade chip made of solid carbide, and a plurality of chip sets with a larger number of flat-blade chips continuously than the mountain-blade chip on the counter-rotation side of the mountain-blade chip. It is configured as a set. It is preferable that both the rake face of the tip of the mountain blade tip and the rake face of the tip of the flat blade tip have a rake angle of 0 degrees or less. Further, a tip having a blade shape different from the above-mentioned mountain blade tip and flat blade tip may be interposed between the chip sets.
【０００５】[0005]
以下本考案の実施例を図面に基いて説明する。図面において、図１は本考案の 第１実施例を示す部分側面図、図２図は図１のII−II断面図である。図１におい て、６は回転鋸であり、円板状の台金７の外周部に多数の鋸歯形の歯台８を周方 向に所定ピッチで形成するとともに、各歯台８の回転面側の（右面）に段部８ａ を形成し、該各段部にサーメットからなる直方体状の超硬チップを固着し、これ ら超硬チップを刃先研削して山刃チップ９及び平刃チップ１０を周方向に所定の 比率（後述）でもって混在させて形成する。 An embodiment of the present invention will be described below with reference to the drawings. 1 is a partial side view showing a first embodiment of the present invention, and FIG. 2 is a sectional view taken along line II-II of FIG. In FIG. 1, reference numeral 6 is a rotary saw, and a large number of saw tooth-shaped tooth bases 8 are formed on the outer peripheral portion of a disk-shaped base metal 7 at a predetermined pitch in the circumferential direction, and the rotating surface of each tooth base 8 is rotated. Steps 8a are formed on the side (right side), rectangular parallelepiped cemented carbide chips made of cermet are fixed to the respective stepped portions, and these cemented carbide chips are ground by cutting edges to form a mountain edge chip 9 and a flat blade chip 10. Are mixed and formed in the circumferential direction at a predetermined ratio (described later).
【０００６】 上記山刃チップ９は、先端部を正面視台形状に形成し、先端逃げ角αを８度に 、先端部の第１すくい角γ1を−５度に、基部の第２すくい角γ2を１０度に、側 面向心角εを０.５度に形成する。また、先端部の第１すくい面９ｂの半径方向 の長さＬを０.２mmに形成し、先端切刃９ａの刃厚Ｔ1を平刃チップ１０の先端切 刃１０ａの刃厚Ｔ2の約１／３に形成する。In the above-mentioned mountain edge tip 9, the tip is formed in a trapezoidal shape in a front view, the tip clearance angle α is 8 degrees, the first rake angle γ1 of the tip is -5 degrees, and the second rake angle of the base is. γ2 is set to 10 degrees and the lateral face centripetal angle ε is set to 0.5 degrees. Further, the radial length L of the first rake face 9b of the tip portion is formed to be 0.2 mm, and the blade thickness T1 of the tip cutting blade 9a is about 1 of the blade thickness T2 of the tip cutting blade 10a of the flat blade tip 10. / 3.
【０００７】 上記平刃チップ１０は、基部のを正面視矩形状に形成するとともに、先端切刃 １０ａを山刃チップ９の先端切刃９ａよりも高さＨ（０.２mm）低く形成し、基 部の左右両側を０.１mmの幅で切削して面取り部１０ｂを形成する。また、先端 逃げ角α、先端部の第１すくい角γ1、基部の第２すくい角γ2及び側面向心角ε は、前述した山刃チップ９のものと等角に形成する。The flat blade tip 10 has a base portion formed in a rectangular shape in a front view, and the tip cutting edge 10a is formed to be lower than the tip cutting edge 9a of the mountain tip 9 by a height H (0.2 mm). The chamfered portion 10b is formed by cutting the left and right sides of the base with a width of 0.1 mm. Further, the tip clearance angle α, the first rake angle γ1 of the tip portion, the second rake angle γ2 of the base portion, and the side face centripetal angle ε are formed at the same angle as that of the above-mentioned mountain edge tip 9.
【０００８】 次に上記山刃チップ９と平刃チップ１０との周方向の配列について説明する。 図１、図２は配列の第１例を示す。このものは、１個の山刃チップ９の反回転側 （図１において左方）に２個の平刃チップ１０を連続させた３個組みのチップセ ットが周方向に順次配列する如く形成（刃先研削）したものである。Next, the arrangement of the mountain blade tip 9 and the flat blade tip 10 in the circumferential direction will be described. 1 and 2 show a first example of the array. This is formed such that a set of three chips, in which two flat blade chips 10 are continuously arranged on the counter-rotation side (left side in FIG. 1) of one mountain blade chip 9, is sequentially arranged in the circumferential direction. (Blade edge grinding).
【０００９】 図３〜図６は配列の第２例を示す。このものは、１個の山刃チップ９の反回転 側に２個の平刃チップ１０を連続させた３個組みのチップセットが周方向に複数 セット配列する如く形成するとともに、上記各チップセット間に一組みの交互刃 １１ａ，１１ｂを形成する。上記交互刃１１ａ，１１ｂはその刃高を山刃チップ ９よりも低くするとともに、図５及び図６に示すように、それぞれの先端切刃１ １ｃ，１１ｄの先端傾き角ｘを互いに逆勾配に形成する。3 to 6 show a second example of the arrangement. This is formed by arranging a plurality of sets of three chips in which two flat blade chips 10 are continuously arranged on the counter-rotation side of one mountain blade chip 9 in the circumferential direction, and each of the above chip sets. A pair of alternating blades 11a and 11b is formed between them. The alternating blades 11a and 11b have a blade height lower than that of the mountain blade tip 9, and as shown in FIGS. 5 and 6, the tip inclination angles x of the respective tip cutting edges 11c and 11d are set to be opposite to each other. Form.
【００１０】 図７〜図１０は配列の第３例を示す。このものは、１個の山刃チップ９の反回 転側に２個の平刃チップ１０を連続させた３個組みのチップセットが周方向に複 数セット配列する如く形成するとともに、各チップセット間に一組みの異形平刃 １２ａ，１２ｂを形成する。上記異形平刃１２ａ，１２ｂはその刃高を平刃チッ プ１０と等しくするとともに、図９及び図１０に示すように、一方の先端切刃１ ２ｃの右端部１２ｃ−１、他方の先端切刃１２ｄの左端部１２ｄ−１をそれぞれ 回転軸心に対して４５度で傾斜させる。7 to 10 show a third example of the arrangement. This one is formed such that a plurality of three chip sets in which two flat blade chips 10 are continuously arranged on the counter-rotation side of one mountain blade chip 9 are arranged in the circumferential direction, and each chip set is arranged. A pair of deformed flat blades 12a and 12b are formed between the sets. The modified flat blades 12a and 12b have the same blade height as that of the flat blade chip 10, and as shown in FIGS. 9 and 10, the right end portion 12c-1 of one tip cutting blade 12c and the other tip cutting edge 12c-1. The left end 12d-1 of the blade 12d is inclined at 45 degrees with respect to the rotation axis.
【００１１】 なお、上記山刃チップ９と平刃チップ１０との周方向の配列は、２個の山刃チ ップ９の反回転側に３個の平刃チップ１０を連続させた５個組みのチップセット 、あるいは反回転側に向かって２個の山刃チップ９、３個の平刃チップ１０、１ 個の山刃チップ９、１個の平刃チップ１０を順次形成してなる７個組みのチップ セットが周方向に複数セット配列する如く形成（刃先研削）してもよい。The above-mentioned arrangement of the mountain blade tip 9 and the flat blade tip 10 in the circumferential direction is 5 pieces in which three flat blade tips 10 are continuous on the counter-rotation side of the two mountain blade chips 9. A set of chips, or two mountain blade tips 9, three flat blade tips 10, one mountain blade tip 9, and one flat blade tip 10 are sequentially formed toward the counter rotation side 7 It may be formed (blade edge grinding) so that a plurality of individual chip sets are arranged in the circumferential direction.
【００１２】 次ぎに上記実施例の作用・効果について説明する。回転鋸６を図１において右 方に回転させた状態で加工物に向けて進行させると、まず山刃チップ９の先端切 刃９ａが加工物に接触して該接触部に小幅の溝を形成し、その直後に平刃チップ １０の先端切刃１０ａの両側部が上記溝の両側を切削して広幅にしつつ加工物を 切断する。この場合、平刃チップ１０は、周方向に複数個連続して存在するので 、一部の平刃チップ１０が欠損した際に、残りの平刃チップ１０が補完すること になる。また各山刃チップ９及び平刃チップ１０は、先端逃げ角αが１０度に、 第１すくい角γ１が−５度に形成されているので、刃先角βが大きくなり、刃先 の強度が増大して欠損し難くなり、切断性能が長期に亘って良好に維持されるこ とになる。Next, the operation and effect of the above embodiment will be described. When the rotary saw 6 is advanced rightward in FIG. 1 toward the workpiece, the tip cutting edge 9a of the mountain tip 9 first contacts the workpiece to form a narrow groove at the contact portion. Immediately after that, both sides of the tip cutting edge 10a of the flat blade tip 10 cut both sides of the groove to make them wide and cut the workpiece. In this case, since the plurality of flat blade tips 10 continuously exist in the circumferential direction, when some of the flat blade tips 10 are lost, the remaining flat blade tips 10 are complemented. Further, since each of the mountain blade tip 9 and the flat blade tip 10 has the tip clearance angle α of 10 degrees and the first rake angle γ1 of −5 degrees, the blade edge angle β increases and the strength of the blade edge increases. As a result, chipping is less likely to occur, and the cutting performance is maintained good for a long period of time.
【００１３】 前述したうち、２個の山刃チップ９の反回転側に３個の平刃チップ１０を配置 した５個組みのチップセットを周方向に複数セット配列して、直径３０５mmの回 転鋸および直径１８０mmの回転鋸を形成し、これらと従来の回転鋸とにより、外 径５０.８mm、肉厚２.０mmのＳＵＳ３０４又はＳＵＳ３１６（オーステナイト系 ステンレス鋼）製の電縫管（以下被削材という）を切断比較したところ、直径３ ０５mmの回転鋸においては、本願考案のものが３１１カットであるのに対し従来 のものは４５カット、直径１８０mmの回転鋸においては、本願考案のものが９３ カットであるのに対し従来のものは２０カットであった。Among the above-mentioned, a plurality of five-piece chip sets in which three flat blade tips 10 are arranged on the counter-rotation side of the two mountain blade tips 9 are arranged in the circumferential direction, and are rotated with a diameter of 305 mm. A saw and a rotary saw with a diameter of 180 mm are formed. With these and a conventional rotary saw, an electric resistance welded pipe made of SUS304 or SUS316 (austenitic stainless steel) having an outer diameter of 50.8 mm and a wall thickness of 2.0 mm (hereinafter referred to as a work piece) When compared to cutting the rotating saw with a diameter of 305 mm, the one of the present invention has 311 cuts, whereas the conventional one has a cut of 451, and the rotating saw with a diameter of 180 mm has the one of the present invention. In contrast to 93 cuts, the conventional one has 20 cuts.
【００１４】[0014]
以上の説明から明らかな如く、本考案は、大きな負荷が加わる平刃チップを山 刃チップ間に複数個連続させて形成するようにしたので、切断性能を長期に亘っ て良好に維持することができる効果を奏する。 As is clear from the above description, in the present invention, a plurality of flat blade tips to which a large load is applied are continuously formed between the blade tips, so that the cutting performance can be kept good for a long time. There is an effect that can be done.
【図１】本考案の第１実施例を示す部分側面図である。FIG. 1 is a partial side view showing a first embodiment of the present invention.
【図２】図１のII〜II断面図である。FIG. 2 is a sectional view taken along line II-II in FIG.
【図３】本考案の第２実施例を示す部分側面図である。FIG. 3 is a partial side view showing a second embodiment of the present invention.
【図４】図３のIV〜IV断面図である。4 is a sectional view taken along line IV-IV in FIG.
【図５】図３のIV〜IV断面端面図である。5 is a sectional end view taken along line IV-IV of FIG.
【図６】図３のVI〜VI断面端面図である。6 is a sectional view taken along line VI-VI of FIG.
【図７】本考案の第３実施例を示す部分側面図である。FIG. 7 is a partial side view showing a third embodiment of the present invention.
【図８】図７のVIII〜VIII断面図である。8 is a sectional view taken along line VIII-VIII of FIG.
【図９】図７のVIII〜VIII断面端面図である。9 is an end view of a cross section taken along line VIII-VIII of FIG. 7.
【図１０】図７のX〜X断面端面図である。10 is an end view taken along line X-X in FIG. 7.
【図１１】従来例を示す部分側面図である。FIG. 11 is a partial side view showing a conventional example.
【図１２】図１１のXII〜XII断面図である。12 is a sectional view taken along line XII-XII in FIG.
６ 回転鋸 ７ 台金 ８ 歯台 ８ａ 段部 ９ 山刃チップ ９ａ 先端切刃 １０ 平刃チップ １０ａ 先端切刃 １０ｂ 面取り部 １１ａ 交互刃 １１ｂ 交互刃 １１ｃ 先端切刃 １１ｄ 先端切刃 １２ａ 異形平刃 １２ｂ 異形平刃 １２ｃ 先端切刃 １２ｃ−１ 右端部 １２ｄ 先端切刃 １２ｄ−１ 左端部 α 先端逃げ角 β 刃先角 γ１ 第１すくい角 γ２ 第２すくい角 ε 側面向心角 x 先端傾き角 Ｔ１ 山刃チップの歯厚 Ｔ２ 平刃チップの歯厚 6 rotary saw 7 base metal 8 tooth base 8a step portion 9 mountain edge tip 9a tip cutting edge 10 flat blade tip 10a tip cutting edge 10b chamfer 11a alternate blade 11b alternate blade 11c tip cutting edge 11d tip cutting edge 12a variant flat blade 12b Deformed flat blade 12c Tip cutting edge 12c-1 Right edge 12d Tip edge 12d-1 Left edge α Tip clearance angle β Edge angle γ1 1st rake angle γ2 2nd rake angle ε Lateral concentric angle x Tip inclination angle T1 Mountain edge Tip tooth thickness T2 Flat blade tip tooth thickness
Claims (3)
に形成された超硬製の山刃チップと、先端部が正面視矩
形状に且つ歯高が山刃チップよりも低く形成された超硬
製の平刃チップとを設け、山刃チップの反回転側に該山
刃チップよりも多い数の平刃チップを連続させてなるチ
ップセットを、前記台金の外周に複数セット設けたこと
を特徴とする金属切削用回転鋸。1. A disk-shaped base metal, a cemented carbide blade tip whose front end portion is formed in a trapezoidal shape in front view, a front end rectangular shape, and a tooth height higher than that of a mountain blade tip. Provided with a low-formed carbide flat-blade tip, and a chipset in which a larger number of flat-blade tips than the mountain-blade tip are continuously provided on the counter-rotation side of the mountain-blade tip, on the outer periphery of the base metal. A rotary saw for metal cutting, which is provided with multiple sets.
の先端部のすくい面は共に０度以下のすくい角としたこ
とを特徴とする請求項１記載の金属切断用回転鋸。2. The rotary saw for metal cutting according to claim 1, wherein the rake face of each of the tip portion of the mountain blade tip and the tip portion of the flat blade tip has a rake angle of 0 degrees or less.
び平刃チップとは異なる刃形のチップを介在させたこと
を特徴とする請求項１または２記載の金属切断用回転
鋸。3. The rotary saw for metal cutting according to claim 1, wherein a tip of a blade shape different from the tip of the mountain blade and the tip of the flat blade is interposed between the tip sets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1993044485U JP2540470Y2 (en) | 1993-07-22 | 1993-07-22 | Rotary saw for metal cutting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1993044485U JP2540470Y2 (en) | 1993-07-22 | 1993-07-22 | Rotary saw for metal cutting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0715224U true JPH0715224U (en) | 1995-03-14 |
| JP2540470Y2 JP2540470Y2 (en) | 1997-07-02 |
Family
ID=12692851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1993044485U Expired - Lifetime JP2540470Y2 (en) | 1993-07-22 | 1993-07-22 | Rotary saw for metal cutting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2540470Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014125905A1 (en) * | 2013-02-14 | 2014-08-21 | 株式会社 アマダ | Saw blade |
| CN114667195A (en) * | 2019-12-19 | 2022-06-24 | 兼房株式会社 | Circular saw blade |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7305339B2 (en) | 2018-12-06 | 2023-07-10 | 天龍製鋸株式会社 | rotary saw |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5833051A (en) * | 1981-08-20 | 1983-02-26 | Matsushita Electric Ind Co Ltd | Controlling device of water heater |
-
1993
- 1993-07-22 JP JP1993044485U patent/JP2540470Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5833051A (en) * | 1981-08-20 | 1983-02-26 | Matsushita Electric Ind Co Ltd | Controlling device of water heater |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014125905A1 (en) * | 2013-02-14 | 2014-08-21 | 株式会社 アマダ | Saw blade |
| JP2014176956A (en) * | 2013-02-14 | 2014-09-25 | Amada Co Ltd | Saw blade |
| CN114667195A (en) * | 2019-12-19 | 2022-06-24 | 兼房株式会社 | Circular saw blade |
| CN114667195B (en) * | 2019-12-19 | 2023-11-14 | 兼房株式会社 | circular saw blade |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2540470Y2 (en) | 1997-07-02 |
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| R250 | Receipt of annual fees |
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| EXPY | Cancellation because of completion of term |