JPH0113973B2 - - Google Patents
Info
- Publication number
- JPH0113973B2 JPH0113973B2 JP2213781A JP2213781A JPH0113973B2 JP H0113973 B2 JPH0113973 B2 JP H0113973B2 JP 2213781 A JP2213781 A JP 2213781A JP 2213781 A JP2213781 A JP 2213781A JP H0113973 B2 JPH0113973 B2 JP H0113973B2
- Authority
- JP
- Japan
- Prior art keywords
- cutting
- cutting edge
- diamond
- cemented carbide
- rake angle
- 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.)
- Expired
Links
- 229910003460 diamond Inorganic materials 0.000 claims description 34
- 239000010432 diamond Substances 0.000 claims description 34
- 229910000997 High-speed steel Inorganic materials 0.000 claims description 9
- 239000002131 composite material Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 description 9
- 239000000956 alloy Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 4
- 238000005219 brazing Methods 0.000 description 3
- 239000011120 plywood Substances 0.000 description 2
- 229910000967 As alloy Inorganic materials 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
- B23D61/02—Circular saw blades
- B23D61/021—Types of set; Variable teeth, e.g. variable in height or gullet depth; Varying pitch; Details of gullet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
- B23D61/02—Circular saw blades
- B23D61/04—Circular saw blades with inserted saw teeth, i.e. the teeth being individually inserted
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
Description
【発明の詳細な説明】
本発明は耐久力が優れ、工具コストを低減し得
る回転カツターの構造に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotary cutter structure that has excellent durability and can reduce tool costs.
例えば合板、石こうボード、硅酸カルシウム板
等の建材ボードの切断、溝入れ、相じやくり、サ
ネ加工等には、一般に切刃が超硬合金より成る回
転カツターが使用されている。 For example, rotary cutters whose cutting blades are made of cemented carbide are generally used for cutting, grooving, doweling, slatting, etc. of building material boards such as plywood, gypsum boards, and calcium silicate boards.
一方、一般住宅、ビル等の外壁、内壁、天井
板、床板等の建築材料は「法」の規制もあつて不
燃化（無機質化）が急速に進みつつある。この無
機質不燃材は硅酸やガラス繊維等を含み、被削性
が悪く、従来の合板等に広く使用されている超硬
合金カツター（通常超硬チツプソー）では、耐摩
耗性が不充分であり、この加工に対してはより耐
久性の高い高性能の工具を必要とする。 On the other hand, construction materials such as exterior walls, interior walls, ceiling panels, floor panels, etc. of ordinary houses and buildings are rapidly becoming non-combustible (mineralized) due to legal regulations. This inorganic noncombustible material contains silicic acid, glass fiber, etc., and has poor machinability, and the wear resistance is insufficient for conventional cemented carbide cutters (usually carbide chipsaws) widely used for plywood etc. , this process requires more durable and high-performance tools.
従つてこの用途に対しては、超硬合金よりはる
かに耐摩耗性の高い焼結ダイヤモンドより成る切
刃を用いた回転カツターが考えられるが、カツタ
ーは通常刃数が40〜100枚／個で、これを全部焼
結ダイヤモンド製切刃とすると、極めて高価とな
り、それだけの効果があつても一般ユーザーでは
使いにくいという欠点がある。 Therefore, for this purpose, a rotary cutter with a cutting edge made of sintered diamond, which has much higher wear resistance than cemented carbide, can be considered, but cutters usually have 40 to 100 teeth per piece. If all of these cutting blades were made of sintered diamond, they would be extremely expensive, and even if they were effective, they would be difficult for general users to use.
本発明は、上述の問題点を解決するため成され
たもので、従来の超硬合金製回転カツターの複数
の切刃に、耐摩耗性の高い焼結ダイヤモンドより
なる刃先を有する切刃を一部混入し、かつその切
先形状を工夫することにより、工具コストを余り
増加させずに耐久力が優れ、寿命の長い複合回転
カツターの構造を提供せんとするものである。 The present invention has been made to solve the above-mentioned problems, and is to replace the plurality of cutting blades of the conventional rotary cutter made of cemented carbide with a single cutting blade having a cutting edge made of sintered diamond with high wear resistance. The purpose of this invention is to provide a composite rotary cutter structure that has excellent durability and a long life without significantly increasing the tool cost by mixing the cutter with the cutter and by devising the cutting edge shape.
本発明は、外周上に複数の切刃を有する回転カ
ツターにおいて、前記複数の切刃の内の一部が焼
結ダイヤモンドよりなる刃先を有して成り、残り
の切刃が高速度鋼又は超硬合金より成り、かつ各
切刃の半径方向すくい角は、前記焼結ダイヤモン
ドよりなる刃先を有して成る切刃では負、前記高
速度鋼又は超硬合金より成る切刃では正であるこ
とを特徴とする複合回転カツターである。 The present invention provides a rotary cutter having a plurality of cutting edges on the outer periphery, in which a part of the plurality of cutting edges has a cutting edge made of sintered diamond, and the remaining cutting edges are made of high speed steel or super high speed steel. made of a hard metal, and the radial rake angle of each cutting edge is negative for the cutting edge with the cutting edge made of sintered diamond, and positive for the cutting blade made of the high speed steel or cemented carbide. This is a compound rotary cutter featuring the following.
本発明において、焼結ダイヤモンドよりなる刃
先を有して成る切刃（以下、ダイヤモンド切刃と
略称す）とは、少なくとも刃先の部分に焼結ダイ
ヤモンドを固着した切刃を意味する。 In the present invention, a cutting blade having a cutting edge made of sintered diamond (hereinafter abbreviated as a diamond cutting edge) means a cutting blade having sintered diamond fixed to at least the cutting edge portion.
以下、本発明を図面を用いて実施例により説明
する。 Hereinafter, the present invention will be explained by examples using the drawings.
第１図は本発明の実施例における切刃の配置を
示す側面図である。図において１〜１０は切刃
で、これらの内、切刃３，６，９はダイヤモンド
切刃で、残りの切刃１，２，４，５……は超硬合
金又は高速度鋼より成る切刃（以下、合金切刃と
略称す）である。従つて耐摩耗性の高いダイヤモ
ンド切刃は合金切刃２枚毎に１枚配置されてい
る。 FIG. 1 is a side view showing the arrangement of cutting blades in an embodiment of the present invention. In the figure, 1 to 10 are cutting edges, of which cutting edges 3, 6, and 9 are diamond cutting edges, and the remaining cutting edges 1, 2, 4, 5, etc. are made of cemented carbide or high speed steel. It is a cutting blade (hereinafter abbreviated as alloy cutting blade). Therefore, one diamond cutting edge with high wear resistance is arranged for every two alloy cutting edges.
次にこのように複数の切刃の一部にダイヤモン
ド切刃を混入する場合の刃数、配置、形状等につ
いて説明する。 Next, the number of blades, arrangement, shape, etc. when diamond cutting blades are mixed into some of the plurality of cutting blades will be explained.
焼結ダイヤモンドは超硬合金に比べて極めて耐
摩耗性が優れるという特徴を有する反面、かなり
高価であり、又被研削性が非常に悪いというよう
な問題があり、焼結ダイヤモンドを使用するに際
しては、単に従来の超硬合金を工具形状はそのま
まで焼結ダイヤモンドに変えるだけではなく、よ
り有効に使用するために工具形状をも変更するな
どの工夫が必要である。 Sintered diamond has the characteristic of being extremely wear resistant compared to cemented carbide, but on the other hand, it is quite expensive and has very poor grindability, so when using sintered diamond, In addition to simply changing the conventional cemented carbide to sintered diamond while leaving the same tool shape, it is also necessary to change the tool shape in order to use it more effectively.
先ずカツターの刃数は通常40〜100枚／個であ
るが、切削にたずさわる切刃を少なくすると、(イ)
１刃当りの送り分担量が大きくなり、刃先が欠損
する。(ロ)１刃当りの送り量が増加し、仕上面を粗
くし、品位上問題となる。(ハ)切刃の被削物への喰
いこみ時に軸方向の振動が発生し、刃先欠損の原
因となるなどの現象が起こる。 First of all, the number of blades of a cutter is usually 40 to 100 pieces, but if you reduce the number of cutting blades involved in cutting, (a)
The amount of feed per blade increases, causing the cutting edge to break. (b) The amount of feed per tooth increases, making the finished surface rough and causing quality problems. (c) When the cutting blade bites into the workpiece, vibrations in the axial direction occur, causing phenomena such as chipping of the cutting edge.
従つて一般的に常時２枚以上の切刃が被削物に
接触しているように作業条件又は刃数を選定する
必要がある。 Therefore, it is generally necessary to select working conditions or the number of cutting edges so that two or more cutting edges are always in contact with the workpiece.
次に、ダイヤモンド切刃は合金切刃に比し、耐
摩耗性が極めて高い。従つて上述の(イ)、(ロ)、(ハ)の
制約内であたかもダイヤモンド切刃のみで切削す
る如き条件となるように、ダイヤモンド刃数を選
定し、合金切刃は主として上述の(ハ)を防止する役
割として作用させるようにする。合金切刃はさら
に溝部にたまつた被削材の切層粉末をかき出し、
ダイヤモンド切刃の摩耗防止を計る、いわゆる
「かき出し刃」の働らきも兼ねるようにする。 Next, diamond cutting edges have extremely high wear resistance compared to alloy cutting edges. Therefore, within the constraints of (a), (b), and (c) above, the number of diamond blades was selected so that the conditions would be as if cutting was performed only with diamond cutting blades, and the alloy cutting blade was mainly used as described in (h) above. ) to act as a preventive measure. The alloy cutting blade further scrapes out the cut layer powder of the work material that has accumulated in the groove,
It also functions as a so-called ``scraping blade'' to prevent wear on the diamond cutting blade.
次に刃先形状については、超硬合金チツプソー
では、第１図に示す合金切刃１，２，……のよう
に一般的に半径方向には正のすくい角をつけてい
る。 Next, regarding the shape of the cutting edge, cemented carbide chipsaws generally have a positive rake angle in the radial direction, as shown in the alloy cutting edges 1, 2, . . . shown in FIG.
これは切刃の切れ味をできるだけ良くし、切削
時にかかる被削材への負荷をできるだけ少なくし
て、かえりやばりの発生を抑え、被削面を美しく
するためである。ところがダイヤモンド切刃は合
金切刃に比し、非常に耐摩耗性が大であるため、
長期間シヤープな切刃を保つので、必ずしも合金
切刃の如き正のすくい角をつける必要はなく、負
のすくい角でも長期間美しい加工面を得ることが
できる。 This is to improve the sharpness of the cutting edge as much as possible, to minimize the load on the workpiece material during cutting, to suppress the occurrence of burrs and burrs, and to make the workpiece surface beautiful. However, diamond cutting blades have much higher wear resistance than alloy cutting blades, so
Since it maintains a sharp cutting edge for a long period of time, it is not necessarily necessary to have a positive rake angle like an alloy cutting edge, and a beautiful machined surface can be obtained for a long period of time even with a negative rake angle.
従つて本発明においては、各切刃の半径方向の
すくい角θ1，θ2は、第１図に実施例を示すよう
に、合金切刃１，２，４，５……ではθ1が正、ダ
イヤモンド切刃３，６……ではθ2が負とする。 Therefore, in the present invention, the rake angles θ 1 , θ 2 in the radial direction of each cutting edge are such that θ 1 is positive, θ 2 is negative for diamond cutting edges 3, 6, etc.
又燃結ダイヤモンドはチツプソーに使用される
超硬合金に比し、やや脆いため、超硬合金と同一
形状の正のすくい角とすると、刃先にチツピング
や欠けが生じる恐れがあるが、負のすくい角とす
ると刃先強度が大となり、チツピング、欠けが起
こらず、安定した寿命を得ることができる。 Also, fused diamond is a little more brittle than the cemented carbide used in chip saws, so if you use a positive rake angle with the same shape as the cemented carbide, there is a risk of chipping or chipping on the cutting edge, but a negative rake A square edge increases the strength of the cutting edge, prevents chipping and chipping, and provides a stable service life.
さらに負のすくい角とすると次のような利点が
ある。すなわち、同一寸法の焼結ダイヤモンドチ
ツプを切刃に固着形成する場合、すくい角の正、
負により第２図イ，ロに示すような形状となる。
なお第２図は第１図に示したようなチツプソーの
１切刃のみを側面から見た図である。このような
チツプソーは再研削して複数回使用するのが通例
であり、この再研削はすくい面１３は行なわず、
逃げ面１４のみを追い込み研削する。再研削を数
回行なつた後、チツプの底面の鑞付面１５の面積
が小となり、鑞付け強度が一定値以下となると、
使用に耐えなくなるためチツプソーは廃却され
る。さて第２図イ，ロにおいて、各々同量の再研
削を行なつた後（点線）の鑞付面１５の面積は当
然l1，l2で示すようにロ図の場合の方が大きい。 Furthermore, a negative rake angle has the following advantages. In other words, when sintered diamond chips of the same size are fixedly formed on the cutting edge, the positive rake angle,
Due to the negative value, the shape becomes as shown in Figure 2 A and B.
Note that FIG. 2 is a side view of only one cutting blade of the chipsaw shown in FIG. 1. It is customary for such a tip saw to be re-ground and used multiple times, and this re-grinding is not performed on the rake face 13.
Only the flank surface 14 is driven and ground. After re-grinding several times, the area of the brazing surface 15 on the bottom of the chip becomes small and the brazing strength falls below a certain value.
Chip saws are discarded because they are no longer usable. Now, in FIGS. 2A and 2B, the area of the brazed surface 15 after the same amount of regrinding (dotted line) is naturally larger in the case of FIG. 2, as shown by l 1 and l 2 .
従つてロ図のように負のすくい角にした方が、
同一寸法の焼結ダイヤモンドチツプ１１に対し
て、より多くの再研削回数が可能となり、より経
済的な切削工具とすることができる。なお１２は
例えば超硬合金片である。 Therefore, it is better to use a negative rake angle as shown in figure B.
A sintered diamond chip 11 of the same size can be re-grinded more times, resulting in a more economical cutting tool. Note that 12 is, for example, a piece of cemented carbide.
このことは、燃焼ダイヤモンドが超硬合金、高
速度鋼等に比し高価であるため、より小さな形状
のものをより有効に使用するという点で重要であ
る。 This is important because combustion diamond is more expensive than cemented carbide, high speed steel, etc., so smaller shapes can be used more effectively.
さらに、焼結ダイヤモンドは非常に硬度大で、
難研削であるため、一般に研削加工圧を大にして
研削加工するが、切刃の仕上げ研削加工時、第２
図イのような正のすくい角では研削加工圧により
チツピングや欠けを生ずる可能性があるが、この
点でも負のすくい角では刃先強度が大であるた
め、研削加工圧を大として短時間で仕上げ加工を
行なうことができ、有利である。 Furthermore, sintered diamond is extremely hard,
Since grinding is difficult, the grinding pressure is generally increased, but when finishing grinding the cutting edge, the second
With a positive rake angle as shown in Figure A, there is a possibility that chipping or chipping may occur due to the grinding pressure, but since the strength of the cutting edge is high with a negative rake angle, the grinding pressure can be increased in a short time. It is advantageous that finishing processing can be performed.
以上述べたように、本発明は、回転カツターに
おいて、前記複数の切刃の内の一部が焼結ダイヤ
モンドよりなる刃先を有して成り、残りの切刃が
高速度鋼又は超硬合金より成るから、高価なダイ
ヤモンド刃の刃数が少なくても、無機質ボード等
の難切削材の加工が容易にでき、工具コストが安
く、耐久力の優れた工具が得られると共に、各切
刃の半径方向のすくい角が前記ダイヤモンド切刃
では負、合金切刃では正であるため、焼結ダイヤ
モンドは非常に耐摩耗性が大であるため長期間シ
ヤープな切刃を保つので、負のすくい角でも美し
い加工面を得ることができ、又負のすくい角によ
りダイヤモンド刃の刃先のチヨツピングや欠けを
防止することができ、さらに再研削回数を多くで
きるので、安定した長寿命を有する複合回転カツ
ターを提供する利点がある。 As described above, the present invention provides a rotary cutter in which a part of the plurality of cutting blades has a cutting edge made of sintered diamond, and the remaining cutting blades are made of high speed steel or cemented carbide. Because of this, even if the number of expensive diamond blades is small, difficult-to-cut materials such as inorganic boards can be easily machined, the tool cost is low, and a tool with excellent durability can be obtained. Since the rake angle in the direction is negative for the diamond cutting edge and positive for the alloy cutting edge, sintered diamond has extremely high wear resistance and maintains a sharp cutting edge for a long period of time, so even with a negative rake angle. A beautiful machined surface can be obtained, and the negative rake angle prevents chipping and chipping of the cutting edge of the diamond blade.Furthermore, it can be re-grinded many times, providing a composite rotary cutter with a stable and long life. There are advantages to doing so.
第１図は本発明の実施例を示す側面図である。
第２図イ，ロはそれぞれ切刃の形状を示す図で、
チツプソウの１切刃のみを側面から見た図であ
り、イ図はすくい角が正の場合、ロ図はすくい角
が負の場合を示す。
１，２，４，５，７，８，１０……高速度鋼又
は超硬合金より成る切刃（合金切刃）、３，６，
９……ダイヤモンド切刃、１１……焼結ダイヤモ
ンドチツプ、１２……超硬合金片、１３……すく
い面、１４……逃げ面、１５……鑞付面、θ1，θ2
……すくい角。
FIG. 1 is a side view showing an embodiment of the present invention.
Figure 2 A and B are diagrams showing the shape of the cutting edge, respectively.
This is a side view of only one cutting edge of the chip saw, and figure A shows the case where the rake angle is positive, and figure B shows the case where the rake angle is negative. 1, 2, 4, 5, 7, 8, 10... Cutting blade made of high speed steel or cemented carbide (alloy cutting blade), 3, 6,
9... Diamond cutting edge, 11... Sintered diamond chip, 12... Cemented carbide piece, 13... Rake face, 14... Flank surface, 15... Brazing surface, θ 1 , θ 2
...rake angle.
Claims (1)
おいて、前記複数の切刃の内の一部が焼結ダイヤ
モンドよりなる刃先を有して成り、残りの切刃が
高速度鋼又は超硬合金より成り、かつ各切刃の半
径方向すくい角は、前記焼結ダイヤモンドよりな
る刃先を有して成る切刃では負、前記高速度鋼又
は超硬合金より成る切刃では正であることを特徴
とする複合回転カツター。1. A rotary cutter having a plurality of cutting edges on the outer periphery, in which some of the plurality of cutting edges have cutting edges made of sintered diamond, and the remaining cutting edges are made of high-speed steel or cemented carbide. and the radial rake angle of each cutting edge is negative for the cutting edge having the cutting edge made of sintered diamond, and positive for the cutting edge made of high speed steel or cemented carbide. Composite rotary cutter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2213781A JPS57138522A (en) | 1981-02-16 | 1981-02-16 | Compound rotary cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2213781A JPS57138522A (en) | 1981-02-16 | 1981-02-16 | Compound rotary cutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57138522A JPS57138522A (en) | 1982-08-26 |
| JPH0113973B2 true JPH0113973B2 (en) | 1989-03-09 |
Family
ID=12074492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2213781A Granted JPS57138522A (en) | 1981-02-16 | 1981-02-16 | Compound rotary cutter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57138522A (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58102616A (en) * | 1981-12-16 | 1983-06-18 | Mitsubishi Metal Corp | Throw away cutter |
| DE3307170C2 (en) * | 1983-03-01 | 1986-08-14 | Wilhelm H. Kullmann WIKUS-Sägenfabrik, 3509 Spangenberg | Saw blade and process for its manufacture |
| DE59507219D1 (en) * | 1994-12-05 | 1999-12-16 | Kampmann Gmbh | Process for sawing steel workpiece bodies and saw blade for use in such a process |
| EP1029624A3 (en) * | 1998-12-29 | 2003-05-02 | Sheffield Saw and Tool Co. Inc. | Circular saw blades with cutting teeth composed of ultrahard tool material, and method for its production |
| US6883412B1 (en) * | 1998-12-29 | 2005-04-26 | Sheffield Saw & Tool Co., Inc. | Method of fabricating circular saw blades with cutting teeth composed of ultrahard tool material |
| WO2004113035A2 (en) * | 2003-06-20 | 2004-12-29 | William Waytenick | Wood cutting saw chain and replaceable cutting members |
| ES2270689B1 (en) * | 2005-01-20 | 2008-03-01 | Instalaciones Inabensa, S.A. | SMOKE SECTOR BARRIER. |
| DE102005020439B3 (en) * | 2005-04-29 | 2006-06-22 | Leitz Gmbh & Co. Kg | Cutting tool e.g. for cutting tools with disk shaped bodies such as wood saws, has body and at its extent has several cutting teeth and in direction of rotation before each tooth space is provided |
| CA2741681A1 (en) * | 2008-11-27 | 2010-06-03 | Gn Tool Co., Ltd. | End mill |
-
1981
- 1981-02-16 JP JP2213781A patent/JPS57138522A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57138522A (en) | 1982-08-26 |
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