JPH0716887B2 - Cutting blade and manufacturing method thereof - Google Patents
Cutting blade and manufacturing method thereofInfo
- Publication number
- JPH0716887B2 JPH0716887B2 JP19414990A JP19414990A JPH0716887B2 JP H0716887 B2 JPH0716887 B2 JP H0716887B2 JP 19414990 A JP19414990 A JP 19414990A JP 19414990 A JP19414990 A JP 19414990A JP H0716887 B2 JPH0716887 B2 JP H0716887B2
- Authority
- JP
- Japan
- Prior art keywords
- abrasive grain
- grain layer
- groove
- base metal
- cutting blade
- 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 - Fee Related
Links
- 238000005520 cutting process Methods 0.000 title claims description 52
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000006061 abrasive grain Substances 0.000 claims description 58
- 239000010953 base metal Substances 0.000 claims description 46
- 238000003754 machining Methods 0.000 claims description 21
- 238000004070 electrodeposition Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 19
- 238000002844 melting Methods 0.000 claims description 12
- 230000008018 melting Effects 0.000 claims description 12
- 230000015572 biosynthetic process Effects 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 230000000873 masking effect Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 description 9
- 229910003460 diamond Inorganic materials 0.000 description 5
- 239000010432 diamond Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000002950 deficient Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000006355 external stress Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 235000012431 wafers Nutrition 0.000 description 1
Landscapes
- Polishing Bodies And Polishing Tools (AREA)
Description
【発明の詳細な説明】 ［発明の目的］ （産業上の利用分野） 本発明は、ダイヤモンド砥粒やCBN砥粒等を用いた薄刃
型の切断刃に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a thin blade type cutting blade using diamond abrasive grains, CBN abrasive grains, or the like.
（従来の技術） 従来から、ダイヤモンド粉末やCBN粉末等の砥粒を用い
た切断刃は、各種の超硬材、樹脂材、外壁材、コンクリ
ート材、セラミックス材、ガラス材、シリコンウエハ等
の切断に使用されている。このような切断刃における砥
粒の固着方法としては、砥粒層の幅を広く設定できるこ
とから、電着法が多用されている。(Prior art) Conventionally, cutting blades using abrasive grains such as diamond powder and CBN powder have been used to cut various cemented carbide materials, resin materials, outer wall materials, concrete materials, ceramic materials, glass materials, silicon wafers, etc. Is used for. As a method for fixing the abrasive grains on such a cutting blade, the electrodeposition method is widely used because the width of the abrasive grain layer can be set wide.
このような切断刃は、乾式もしくは湿式で用いられてい
るが、どちらの方式においても切断抵抗を削減するため
に、使用時の回転方向と逆方向に径方向内側から外側に
向けて傾斜された溝を砥粒層に設けることが行われてい
る。この溝を設けることにより、熱の発生が押さえられ
て、切断刃および被切断物双方の劣化が抑制され、また
乾式で使用する場合には、溝方向に発生する風によっ
て、砥粒層の目詰りも防止することができる。Such a cutting blade is used in a dry type or a wet type, but in either method, in order to reduce the cutting resistance, it is inclined from the inner side to the outer side in the radial direction in the direction opposite to the rotating direction during use. Grooves are provided in the abrasive grain layer. By providing this groove, generation of heat is suppressed, deterioration of both the cutting blade and the object to be cut is suppressed, and when used in a dry system, the air generated in the groove direction causes the grain of the abrasive grain layer It is also possible to prevent clogging.
上記切削抵抗削減溝を有する電着切断刃は、従来、例え
ば以下のようにして作製されていた。The electrodeposition cutting blade having the cutting resistance reducing groove has been conventionally manufactured, for example, as follows.
まず、例えばスチール材等を所望の台金形状に機械加工
する際に、抵抗削減溝も同様に機械加工によって形成す
る。この後、上記抵抗削減溝内も含めて所定の位置に、
ダイヤモンド砥粒やCBN砥粒等を電着法によって固着
し、切断刃を作製する。First, for example, when machining a steel material or the like into a desired base metal shape, the resistance reduction groove is similarly formed by machining. After that, at the predetermined position, including the inside of the resistance reduction groove,
A diamond blade or CBN abrasive grain is fixed by an electrodeposition method to produce a cutting blade.
（発明が解決しようとする課題） ところで、近年の切断技術においては、切断精度の向上
や切断しろの減少を目的として、切断刃の刃厚を0.5mm
〜1mmというように、極めて薄くすることが求められて
いる。(Problems to be solved by the invention) By the way, in the recent cutting technology, in order to improve the cutting accuracy and reduce the cutting margin, the blade thickness of the cutting blade is 0.5 mm.
It is required to be extremely thin, such as ~ 1mm.
しかしながら、このように刃厚を薄くした場合、上述し
たような抵抗削減溝を台金に機械加工で形成することが
困難となるという問題が生じている。However, when the blade thickness is reduced in this way, there arises a problem that it becomes difficult to form the resistance reducing groove on the base metal by machining.
すなわち、0.5mm〜1mmというように極めて薄い金属材に
機械加工によって溝を形成すると、台金側に歪みが残
り、形状精度が大幅に悪化して精密加工用には使用する
ことができなくなるという問題がある。In other words, if a groove is formed by machining on an extremely thin metal material such as 0.5 mm to 1 mm, distortion remains on the base metal side, the shape accuracy is greatly deteriorated, and it cannot be used for precision processing. There's a problem.
また、機械加工によって形成した溝では、電着によって
砥粒を固着する際に、切断刃の刃厚によらず角部形状が
不定形となり易いという難点もあり、これによっても精
密加工用としての品質低下を招いている。Further, in the groove formed by machining, when fixing the abrasive grains by electrodeposition, there is also a drawback that the corner shape tends to become indefinite regardless of the blade thickness of the cutting blade, which also results in precision machining. It is causing quality deterioration.
本発明は、このような課題に対処するためになされたも
ので、刃厚を薄くした場合において、抵抗削減溝を形成
することによる台金の形状精度の低下を防止し、かつ抵
抗削減溝への電着による砥粒層の形成精度を向上させた
切断刃およびその製造方法を提供することを目的として
いる。The present invention has been made to address such a problem, and when the blade thickness is reduced, it is possible to prevent a reduction in the shape accuracy of the base metal due to the formation of the resistance reduction groove, and to reduce the resistance reduction groove. It is an object of the present invention to provide a cutting blade with improved accuracy of forming an abrasive grain layer by electrodeposition and a method for manufacturing the cutting blade.
［発明の構成］ （課題を解決するための手段） すなわち、本発明の切断刃は、回転方向と逆方向に径方
向内側から外側に向けて傾斜された抵抗削減溝が設けら
れた砥粒層形成部を外縁部に有し、厚さ10mm以下の台金
と、前記抵抗削減溝内も含めて前記砥粒層形成部に電着
法によって固着された砥粒層とを具備する切断刃であっ
て、前記台金に設けられた抵抗削減溝が、電解加工によ
る溶解溝であることを特徴としている。[Structure of the Invention] (Means for Solving the Problems) That is, the cutting blade of the present invention has an abrasive grain layer provided with resistance-reducing grooves that are inclined from the inner side toward the outer side in the radial direction in the direction opposite to the rotational direction. A cutting blade having a forming portion on the outer edge portion and a base metal having a thickness of 10 mm or less, and an abrasive grain layer fixed to the abrasive grain layer forming portion including the inside of the resistance reduction groove by an electrodeposition method. It is characterized in that the resistance reducing groove provided on the base metal is a melting groove formed by electrolytic processing.
また、回転方向と逆方向に径方向内側から外側に向けて
傾斜された抵抗削減溝が設けられた砥粒層形成部を外縁
部に有する台金と、前記抵抗削減溝内も含めて前記砥粒
層形成部に電着法によって固着された砥粒層とを具備す
る切断刃であって、前記台金に設けられた抵抗削減溝
は、電解加工による溶解溝であり、かつその角部は、0.
1R以上の曲面形状を有していることを特徴としている。In addition, a base metal having an abrasive grain layer forming portion at the outer edge portion in which a resistance reducing groove inclined from the radial inner side to the outer side in the direction opposite to the rotation direction is provided, and the abrasive including the inside of the resistance reducing groove. A cutting blade comprising an abrasive grain layer adhered to a grain layer forming portion by an electrodeposition method, wherein the resistance reduction groove provided in the base metal is a melting groove by electrolytic machining, and its corner portion is , 0.
It is characterized by having a curved surface shape of 1R or more.
本発明の切断刃の製造方法は、厚さ10mm以下の円板形状
を有する台金の外周部に、Ｖ字形状の砥粒層形成部を形
成する工程と、前記砥粒層形成部における回転方向と逆
方向に径方向内側から外側に向けて傾斜された抵抗削減
溝の形成位置を除いて、前記台金表面をマスキングする
工程と、前記抵抗削減溝の形成位置を電解加工によって
溶解し、所望の深さの溝を形成する工程と、前記抵抗削
減溝内も含めて前記砥粒層形成部に、電着法によって砥
粒層を固着する工程とを具備することを特徴としてい
る。The manufacturing method of the cutting blade of the present invention comprises a step of forming a V-shaped abrasive grain layer forming portion on the outer peripheral portion of a base metal having a disc shape with a thickness of 10 mm or less, and rotation in the abrasive grain layer forming portion. Except for the formation position of the resistance reduction groove that is inclined from the inner side to the outer side in the direction opposite to the direction, the step of masking the base metal surface, and the formation position of the resistance reduction groove is melted by electrolytic machining, The method is characterized by including a step of forming a groove having a desired depth and a step of fixing an abrasive grain layer to the abrasive grain layer forming portion including the inside of the resistance reduction groove by an electrodeposition method.
（作用） 本発明においては、切断刃用の台金への抵抗削減溝の形
成を電解加工によって行っている。この電解加工による
溶解溝は、台金に対して歪みを与えることなく形成する
ことができると共に、角部をＲ形状とすることができ
る。よって、薄刃型の切断刃においても、台金自体の形
状不良が防止される。また、上記角部がＲ形状の抵抗削
減溝内も含めて電着法によって砥粒層を形成することに
より、角部に起因する砥粒層の隆起等が防止され、形状
精度に優れた砥粒層が得られる。(Operation) In the present invention, the resistance-reducing groove is formed in the base metal for the cutting blade by electrolytic processing. The melting groove formed by this electrolytic processing can be formed without giving strain to the base metal, and the corners can be formed into an R shape. Therefore, even in the thin blade type cutting blade, the defective shape of the base metal itself is prevented. In addition, by forming the abrasive grain layer by the electrodeposition method including the inside of the resistance-reducing groove having the R-shaped corner portion, the abrasive grain layer is prevented from being raised due to the corner portion and the like, and the abrasive having excellent shape accuracy is obtained. A grain layer is obtained.
（実施例） 以下、本発明の実施例について図面を参照して説明す
る。(Example) Hereinafter, the Example of this invention is described with reference to drawings.
第１図および第２図は、本発明の一実施例の切断刃の構
成を示す図である。これらの図において、１はスチール
材等からなる円板形状の台金であり、砥粒層形成部２と
なる外周部1aはＶ字形状を有している。この台金１の一
方の側面には、フランジ面となる凸部1bが設けられてお
り、その中央部にはフランジ取付け孔1cが穿設されてい
る。1 and 2 are views showing the configuration of a cutting blade according to an embodiment of the present invention. In these figures, reference numeral 1 denotes a disk-shaped base metal made of steel or the like, and an outer peripheral portion 1a serving as the abrasive grain layer forming portion 2 has a V shape. A convex portion 1b serving as a flange surface is provided on one side surface of the base metal 1, and a flange mounting hole 1c is formed in the central portion thereof.
なお本発明は、台金１の幅Ｘ、換言すれば刃厚が0.5〜1
mmというような薄刃型の切断刃に対して特に効果的であ
るが、刃厚10mm以下（台金１の幅Ｘが10mm以下）のもの
であっても同様な効果が得られ、機械加工による溝より
有利である。詳細は後述する。In the present invention, the width X of the base metal 1, that is, the blade thickness is 0.5 to 1
Although it is particularly effective for thin blade type cutting blades such as mm, the same effect can be obtained even if the blade thickness is 10 mm or less (width X of the base metal 1 is 10 mm or less). Advantageous over grooves. Details will be described later.
上記台金１のＶ字形状を有する外周部1aの両斜面には、
電解加工による溶解溝である抵抗削減溝３が複数設けら
れている。この抵抗削減溝３は、直径Ｄ方向と溝３とが
成す角θ１が切断加工時における回転方向（図中、矢印
Ａで示す）と逆方向に径方向内側から外側に向けて傾斜
するように形成されており、この角度は０度〜90度の範
囲から選択され、設定加工量が大きい場合ほど、θ１の
角度を大きく設定することが好ましい。On both slopes of the V-shaped outer periphery 1a of the base metal 1,
A plurality of resistance reduction grooves 3 that are melting grooves formed by electrolytic processing are provided. The resistance reducing groove 3 is formed so that the angle θ 1 formed by the diameter D direction and the groove 3 is inclined from the inner side toward the outer side in the direction opposite to the rotation direction (indicated by the arrow A in the drawing) during cutting. This angle is selected from the range of 0 degrees to 90 degrees, and it is preferable to set the angle of θ 1 larger as the set processing amount increases.
また、上記抵抗削減溝３の形成数は、切断加工条件や使
用砥粒の粒度等を考慮して設定するものとするが、抵抗
削減溝３間の角度θ２が１〜10度程度となるように設定
することが好ましい。形成角θ２が１度未満というよう
に、あまり過密に形成すると、切削能力の低下を招きや
すく、また形成角θ２が10度を超えるほど抵抗削減溝３
を疎に形成すると、溝の効果が均一に得られなくなる。The number of the resistance-reducing grooves 3 to be formed is set in consideration of the cutting processing conditions and the grain size of the used abrasive grains, but the angle θ 2 between the resistance-reducing grooves 3 is about 1 to 10 degrees. It is preferable to set as follows. If the formation angle θ 2 is too dense, such as less than 1 degree, the cutting ability tends to be deteriorated, and the resistance reduction groove 3 increases as the formation angle θ 2 exceeds 10 degrees.
If sparsely formed, the effect of the groove cannot be obtained uniformly.
さらに、上記抵抗削減溝３の深さは、使用砥粒の粒度を
考慮して設定するものとし、設定粒度による粒径と同等
以上とすることが好ましい。ただし、あまり深く設定し
ても、それ以上の効果が得られないため、通常、0.1mm
〜0.5mm程度の範囲から選択することが好ましい。Furthermore, the depth of the resistance reduction groove 3 is set in consideration of the grain size of the abrasive grains used, and is preferably equal to or larger than the grain size according to the set grain size. However, even if you set it too deep, you will not get any further effect, so normally 0.1 mm
It is preferable to select from the range of about 0.5 mm.
上記抵抗削減溝３内を含む砥粒層形成部２上には、電着
法による砥粒層４が固着されている。この砥粒層４は、
使用用途に応じて、砥粒の種類や粒度、さらには厚さ等
が選定される。また、上記砥粒としては、一般的なダイ
ヤモンド砥粒、CBN砥粒の他に、セラミックス砥粒等を
用いることも可能である。On the abrasive grain layer forming portion 2 including the inside of the resistance reduction groove 3, the abrasive grain layer 4 is fixed by the electrodeposition method. The abrasive grain layer 4 is
The type and grain size of the abrasive grains, as well as the thickness, are selected according to the intended use. Further, as the above-mentioned abrasive grains, in addition to general diamond abrasive grains and CBN abrasive grains, it is also possible to use ceramics abrasive grains and the like.
ここで、抵抗削減溝３は、上述したように電解加工によ
る溶解溝であり、第３図に示すように、各角部3aはＲ形
状を有している。この角部3aのＲ形状は、電解加工によ
る溶解によって形成されるものであり、また電解加工に
よる溶解条件を適当に選択することによって、0.1R以上
とすることが好ましい。抵抗削減溝３の角部3aを0.1R以
上というように、なだらかな曲面形状とすることによっ
て、その上に形成する砥粒層４を、角部3aの曲面形状に
応じてなだらかに形成することが可能となる。Here, the resistance reduction groove 3 is a melting groove formed by electrolytic processing as described above, and as shown in FIG. 3, each corner 3a has an R shape. The R shape of the corner 3a is formed by melting by electrolytic machining, and is preferably set to 0.1 R or more by appropriately selecting the melting condition by electrolytic machining. By forming the corner 3a of the resistance reduction groove 3 to have a smooth curved surface shape such as 0.1 R or more, the abrasive grain layer 4 formed thereon is formed smoothly according to the curved surface shape of the corner portion 3a. Is possible.
また、電解加工による溶解によって抵抗削減溝３を形成
することによって、台金１に対して歪みを与えることが
なくなる。これは電解加工特有の効果であり、これによ
って刃厚10mm以下の薄刃型の切断刃、特に刃厚が0.5〜1
mmというような薄刃型の切断刃においても、台金１の形
状不良を招くことなく、抵抗削減溝３を形成することが
可能となる。Further, by forming the resistance reduction groove 3 by melting by electrolytic processing, distortion is not given to the base metal 1. This is a unique effect of electrolytic processing, which makes it possible to use thin blades with a blade thickness of 10 mm or less, especially with a blade thickness of 0.5-1.
Even in the case of a thin blade type cutting blade such as mm, the resistance reduction groove 3 can be formed without causing a defective shape of the base metal 1.
例えば、抵抗削減溝３を機械加工によって形成すると、
抵抗削減溝３の角部3aは直角状となり、この上に砥粒層
４を電着によって形成すると、角部3aの砥粒層４が盛り
上がり、形状不良を招いてしまう。また、上記角部3aの
面取りを行ったとしても、薄刃型の切断刃においては、
台金１に外部応力による歪みが残り、台金１自体の形状
不良を招き、精密加工等に適した切断刃を得ることはで
きない。For example, when the resistance reduction groove 3 is formed by machining,
The corner portion 3a of the resistance reduction groove 3 has a right-angled shape, and when the abrasive grain layer 4 is formed on this by electrodeposition, the abrasive grain layer 4 of the corner portion 3a rises, resulting in a defective shape. Further, even if the corner 3a is chamfered, in the thin blade type cutting blade,
Distortion due to external stress remains in the base metal 1 and causes a defective shape of the base metal 1 itself, so that a cutting blade suitable for precision machining or the like cannot be obtained.
次に、上記構成の切断刃の製造方法を第４図を参照して
説明する。Next, a method of manufacturing the cutting blade having the above structure will be described with reference to FIG.
まず、スチール材等を用いて所望形状の台金１を機械加
工等により作製する。この機械加工においては、砥粒層
形成部２となる外周部1aのＶ字形状まで形成するものと
する。次いで、砥粒層形成部２のＶ字形状の両斜面にお
ける抵抗削減溝３の形成位置を除いて、台金１の表面を
樹脂系等のマスキングテープ11で被覆する（第４図−
ａ）。First, a base metal 1 having a desired shape is manufactured by using a steel material or the like by machining or the like. In this machining, the V-shaped outer peripheral portion 1a to be the abrasive grain layer forming portion 2 is formed. Next, the surface of the base metal 1 is covered with a masking tape 11 made of a resin or the like except for the positions where the resistance reducing grooves 3 are formed on both V-shaped slopes of the abrasive grain layer forming portion 2 (Fig. 4-
a).
次に、上記マスキングを施した台金１を電解浴12に浸漬
し、台金１を陽極として電解を行い、抵抗削減溝３を形
成する（第４図−ｂ）。Next, the masked base metal 1 is dipped in an electrolytic bath 12, and electrolysis is performed using the base metal 1 as an anode to form a resistance reduction groove 3 (FIG. 4B).
ここで、上記電解加工による溶解工程は、例えば第５図
に示すように、電解液13を収容した電解浴12の外周側に
陰極側の電極14を配置し、この陰極側電極14の内側に陽
極となる台金１を浸漬配置して、所定の電流を直流電源
15から印加することにより溶解を行う。このようにして
電解加工を行うことにより、均一に抵抗削減溝３を形成
することが可能となる。また、上記電解加工時の条件
は、台金１の素材、電解液の種類および濃度、抵抗削減
溝３の深さ等を考慮して適宜設定するものとする。Here, in the dissolving step by the electrolytic processing, for example, as shown in FIG. 5, the cathode side electrode 14 is arranged on the outer peripheral side of the electrolytic bath 12 containing the electrolytic solution 13, and the inside of the cathode side electrode 14 is arranged. The base metal 1 that serves as the anode is soaked and placed, and a predetermined current is applied to the DC power supply.
Dissolve by applying from 15. By performing the electrolytic processing in this manner, it is possible to uniformly form the resistance reduction groove 3. The conditions for the electrolytic processing are set as appropriate in consideration of the material of the base metal 1, the type and concentration of the electrolytic solution, the depth of the resistance reduction groove 3, and the like.
このように電解加工によって抵抗削減溝３を形成するこ
とにより、第４図（ｃ）に示すように、抵抗削減溝３の
角部3aを0.1R以上の曲面形状とすることができる。ま
た、台金１に対して歪みを残すこともないため、台金１
の形状も当初の形状が維持される。By thus forming the resistance-reducing groove 3 by electrolytic processing, as shown in FIG. 4C, the corner portion 3a of the resistance-reducing groove 3 can have a curved surface shape of 0.1R or more. In addition, since there is no distortion left on the base metal 1, the base metal 1
The original shape is maintained.
この後、上記電解加工によって形成した抵抗削減溝３内
を含む砥粒層形成部２上に、電着法によって砥粒層４を
形成し（第４図−ｄ）、目的とする切断刃を得る。After that, the abrasive grain layer 4 is formed by the electrodeposition method on the abrasive grain layer forming portion 2 including the inside of the resistance reduction groove 3 formed by the electrolytic processing (FIG. 4D), and the target cutting blade is formed. obtain.
次に、上記構成の切断刃の具体的な製造例とその評価結
果について述べる。Next, a specific manufacturing example of the cutting blade having the above configuration and the evaluation result thereof will be described.
まず、刃厚が1.0mmで、外周部1aのＶ字形状が30度の台
金１をスチール材を用いて形成した。次に、幅2mmの抵
抗削減溝３の形成位置（θ１＝45度、θ２＝５度）を除
いて、台金１の表面をマスキングテープ11で被覆した。First, a base metal 1 having a blade thickness of 1.0 mm and a V-shaped outer peripheral portion 1a of 30 degrees was formed using a steel material. Next, the surface of the base metal 1 was covered with the masking tape 11 except for the formation position (θ 1 = 45 degrees, θ 2 = 5 degrees) of the resistance reduction groove 3 having a width of 2 mm.
次に、上記台金１を電解浴12中に浸漬した後、直流電圧
を印加して電解加工による溶解を行った。上記電解加工
により台金１が溶解されて形成された抵抗削減溝３は、
深さが0.3mmで、各角部3aの形状は0.5R以上であった。
また、台金１にフランジを取り付けて回転させ、台金１
の外周部1aのふれを測定することにより形状精度を確認
したところ、電解加工以前と同様な結果が得られた。Next, the base metal 1 was immersed in an electrolytic bath 12, and then a DC voltage was applied to dissolve it by electrolytic processing. The resistance reduction groove 3 formed by melting the base metal 1 by the electrolytic processing is
The depth was 0.3 mm, and the shape of each corner 3a was 0.5 R or more.
Also, attach the flange to the base metal 1 and rotate it to
When the shape accuracy was confirmed by measuring the runout of the outer peripheral portion 1a, the same result as that before the electrolytic processing was obtained.
この後、上記抵抗削減溝３内を含む砥粒層形成部２上
に、粒度100メッシュのダイヤモンド砥粒を電着法によ
って固着し、砥粒層４を形成した。After that, on the abrasive grain layer forming portion 2 including the inside of the resistance reducing groove 3, diamond abrasive grains having a grain size of 100 mesh were fixed by the electrodeposition method to form the abrasive grain layer 4.
得られた砥粒層４の形状を目視で観察したところ、上記
抵抗削減溝３の各角部3aにおいても、隆起等は見当たら
ず、精度よく形成されていることを確認した。また、実
際に上記切断刃を用いて、超硬ブリックの切断を乾式で
行ったところ、非常に精度よく切断することができた。
また、切断量も良好であった。さらに、連続１ケ月の使
用後においても、切断性能は低下せず長寿命であること
を確認した。When the shape of the obtained abrasive grain layer 4 was visually observed, it was confirmed that no bumps or the like were found at each corner portion 3a of the resistance-reducing groove 3 and that it was formed accurately. Moreover, when the cutting of the cemented carbide brick was actually carried out by the dry method using the above-mentioned cutting blade, it was possible to cut with extremely high accuracy.
The cutting amount was also good. Furthermore, it was confirmed that the cutting performance was not deteriorated and the product had a long life even after being continuously used for one month.
なお、上記切断刃は湿式による切断加工時においても、
同様な特性を示した。In addition, the above-mentioned cutting blade is
It showed similar characteristics.
また、本発明との比較のために、上記実施例で用いた台
金に対して機械加工により、同一形状の抵抗削減溝を形
成したところ、外周部のふれが大きく、到底精密加工用
に使用できるものではなかった。Further, for comparison with the present invention, when a resistance reducing groove having the same shape was formed by machining the base metal used in the above-mentioned embodiment, the outer peripheral portion was greatly fluctuated and used for extremely precise machining. It wasn't possible.
さらに、上記比較例の台金の形状不良を無視し、上記実
施例と同一条件で電着によって砥粒層を形成したとこ
ろ、抵抗削減溝の角部における砥粒層は、いずれも隆起
しており、この点からも精密加工用に使用できるもので
はなかった。Furthermore, ignoring the shape defect of the base metal of the comparative example, when the abrasive grain layer was formed by electrodeposition under the same conditions as in the above example, the abrasive grain layer at the corners of the resistance-reducing groove was raised. However, also from this point, it cannot be used for precision machining.
このように、上記実施例においては、砥粒層形成部２に
電解加工によって抵抗削減溝３を形成しているため、薄
刃型の切断刃に対しても非常に精度よく抵抗削減溝３を
形成することができると共に、台金１の形状不良を招く
こともない。また、電解加工による抵抗削減溝３の各角
部3aは、Ｒ形状を有していることから、電着法による砥
粒層４の形状精度にも優れるものとなる。これらによっ
て、精密加工に対応可能な高性能の切断刃を提供するこ
とができると共に、切断刃自体の寿命も大幅に向上す
る。As described above, in the above-described embodiment, since the resistance reduction groove 3 is formed in the abrasive grain layer forming portion 2 by electrolytic processing, the resistance reduction groove 3 is formed with high accuracy even for a thin blade type cutting blade. In addition, the shape of the base metal 1 is not deteriorated. Further, since each corner 3a of the resistance-reducing groove 3 formed by electrolytic processing has an R shape, the shape accuracy of the abrasive grain layer 4 formed by the electrodeposition method is also excellent. With these, it is possible to provide a high-performance cutting blade that can be used for precision machining, and the life of the cutting blade itself is significantly improved.
［発明の効果］ 以上説明したように本発明によれば、薄刃型の切断刃に
おいても、抵抗削減溝を形成することによる台金の形状
精度の低下を防止した上で、電着による砥粒層の形成精
度に優れた切断刃が得られる。よって、精密加工に適し
た高性能で長寿命の切断刃を提供することが可能とな
る。EFFECTS OF THE INVENTION As described above, according to the present invention, even in a thin blade-type cutting blade, it is possible to prevent a reduction in the shape accuracy of the base metal due to the formation of the resistance-reducing groove, and further, the abrasive grains by electrodeposition. A cutting blade having excellent layer forming accuracy can be obtained. Therefore, it is possible to provide a high-performance and long-life cutting blade suitable for precision machining.
第１図は本発明の一実施例の切断刃の平面図、第２図は
その側面断面図、第３図はその要部を拡大して示す断面
図、第４図は本発明の一実施例の切断刃の製造工程を示
す図、第５図はその電解加工工程を説明するための図で
ある。 １……台金、1a……Ｖ字形状の外周部、２……砥粒層形
成部、３……抵抗削減溝、3a……Ｒ形状を有する角部、
４……砥粒層。FIG. 1 is a plan view of a cutting blade according to an embodiment of the present invention, FIG. 2 is a side sectional view thereof, FIG. 3 is an enlarged sectional view of an essential part thereof, and FIG. 4 is an embodiment of the present invention. The figure which shows the manufacturing process of the example cutting blade, FIG. 5 is a figure for demonstrating the electrolytic processing process. 1 ... Base metal, 1a ... V-shaped outer peripheral portion, 2 ... Abrasive layer forming portion, 3 ... Resistance reducing groove, 3a ... R-shaped corner portion,
4 ... Abrasive layer.
Claims (3)
向けて傾斜された抵抗削減溝が設けられた砥粒層形成部
を外縁部に有し、厚さ10mm以下の台金と、前記抵抗削減
溝内も含めて前記砥粒層形成部に電着法によって固着さ
れた砥粒層とを具備する切断刃であって、 前記台金に設けられた抵抗削減溝が、電解加工による溶
解溝であることを特徴とする切断刃。1. A base metal having an abrasive grain layer forming portion, which has a resistance reducing groove inclined from the inner side to the outer side in the radial direction in the direction opposite to the rotation direction, at the outer edge portion and has a thickness of 10 mm or less, A cutting blade comprising an abrasive grain layer fixed by an electrodeposition method to the abrasive grain layer forming portion including the inside of the resistance reduction groove, wherein the resistance reduction groove provided in the base metal is formed by electrolytic machining. A cutting blade characterized by being a melting groove.
向けて傾斜された抵抗削減溝が設けられた砥粒層形成部
を外縁部に有する台金と、前記抵抗削減溝内も含めて前
記砥粒層形成部に電着法によって固着された砥粒層とを
具備する切断刃であって、 前記台金に設けられた抵抗削減溝は、電解加工による溶
解溝であり、かつその角部は、0.1R以上の曲面形状を有
していることを特徴とする切断刃。2. A base metal having an abrasive grain layer forming portion at an outer edge portion provided with a resistance reducing groove inclined from the inner side to the outer side in the radial direction in the direction opposite to the rotating direction, and the inside of the resistance reducing groove. A cutting blade comprising an abrasive grain layer adhered to the abrasive grain layer forming portion by an electrodeposition method, wherein the resistance reducing groove provided in the base metal is a melting groove by electrolytic machining, and The cutting edge is characterized in that the corner portion has a curved surface shape of 0.1 R or more.
周部に、Ｖ字形状の砥粒層形成部を形成する工程と、 前記砥粒層形成部における回転方向と逆方向に径方向内
側から外側に向けて傾斜された抵抗削減溝の形成位置を
除いて、前記台金表面をマスキングする工程と、 前記抵抗削減溝の形成位置を電解加工によって溶解し、
所望の深さの溝を形成する工程と、 前記抵抗削減溝内も含めて前記砥粒層形成部に、電着法
によって砥粒層を固着する工程と を具備することを特徴とする切断刃の製造方法。3. A step of forming a V-shaped abrasive grain layer forming portion on an outer peripheral portion of a base metal having a disc shape having a thickness of 10 mm or less, and a step in a direction opposite to a rotating direction of the abrasive grain layer forming portion. A step of masking the surface of the base metal, except for the formation position of the resistance reduction groove inclined from the inner side to the outer side in the radial direction, and melting the formation position of the resistance reduction groove by electrolytic processing,
A cutting blade comprising: a step of forming a groove having a desired depth; and a step of fixing an abrasive grain layer to the abrasive grain layer forming portion including the inside of the resistance reduction groove by an electrodeposition method. Manufacturing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19414990A JPH0716887B2 (en) | 1990-07-23 | 1990-07-23 | Cutting blade and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19414990A JPH0716887B2 (en) | 1990-07-23 | 1990-07-23 | Cutting blade and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0482670A JPH0482670A (en) | 1992-03-16 |
| JPH0716887B2 true JPH0716887B2 (en) | 1995-03-01 |
Family
ID=16319733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19414990A Expired - Fee Related JPH0716887B2 (en) | 1990-07-23 | 1990-07-23 | Cutting blade and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0716887B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007021679A (en) * | 2005-07-19 | 2007-02-01 | Asahi Diamond Industrial Co Ltd | Electrodeposition grinding tool |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100236432B1 (en) * | 1996-07-31 | 1999-12-15 | 미야즈 쥰이치로 | Optical polarizer, method for manufacturing same, and blade for manufacturing optical polarizer |
| JP2001019458A (en) * | 1999-07-05 | 2001-01-23 | Shin Etsu Chem Co Ltd | Tool and method for breaking optical fiber preform rod |
-
1990
- 1990-07-23 JP JP19414990A patent/JPH0716887B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007021679A (en) * | 2005-07-19 | 2007-02-01 | Asahi Diamond Industrial Co Ltd | Electrodeposition grinding tool |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0482670A (en) | 1992-03-16 |
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