JP2006181701A - Electro-deposited wire tool and manufacturing method thereof - Google Patents
Electro-deposited wire tool and manufacturing method thereof Download PDFInfo
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本発明は、電着ワイヤ工具およびその製造方法に関する。 The present invention relates to an electrodeposited wire tool and a manufacturing method thereof.
シリコンやサファイヤなどの硬脆材料の切断のために、芯線となる線状体の外周面に超砥粒(硬度が高いCBN(Cubic Boron Nitride)やダイヤモンドからなる砥粒)を固着した電着ワイヤ工具やレジンボンドワイヤ工具を用いることが知られている。芯線に合成樹脂により超砥粒を固定したレジンボンドワイヤ工具は、電着ワイヤ工具よりも磨耗が激しく超砥粒が剥離し易いという問題がある。これに対して、芯線に超砥粒を電着で固定した電着ワイヤ工具は、レジンボンドワイヤ工具より磨耗しにくいが、砥粒を電着する鍍金処理の工程に時間がかかるという問題がある。そのため、このような電着ワイヤ工具においては、近年、ワイヤ工具の製造時における電着速度を向上させるため、Ni、Ti、Cu等の金属からなる被覆層により、超砥粒の表面が被覆された被覆砥粒を用いることが提案されている(特許文献1〜3参照)。
これらの電着ワイヤ工具は、超砥粒表面に導電性を有する被覆層を設けることで、短時間で砥粒を電着することが可能となる。しかしながら、被覆砥粒を用いた電着ワイヤ工具は、被覆砥粒表面に同時にNiを成長させるために、被覆されていない砥粒を電着したワイヤ工具に比べて切れ味が不足しているという問題がある。 These electrodeposition wire tools can electrodeposit abrasive grains in a short time by providing a coating layer having conductivity on the surface of superabrasive grains. However, the electrodeposition wire tool using the coated abrasive grains has a problem that the sharpness is insufficient compared to the wire tool electrodeposited with the uncoated abrasive grains in order to simultaneously grow Ni on the surface of the coated abrasive grains. There is.
本発明は、斯かる実情に鑑み、切れ味に優れる電着ワイヤ工具およびその製造方法を提供しようとするものである。 In view of such circumstances, the present invention is intended to provide an electrodeposited wire tool having excellent sharpness and a method for producing the same.
本発明は、線状体の外周面に電着による鍍金層で固定された複数の被覆砥粒を有する電着ワイヤ工具であって、鍍金層の一部から被覆砥粒が露出している電着ワイヤ工具である。 The present invention is an electrodeposited wire tool having a plurality of coated abrasive grains fixed on a peripheral surface of a linear body by a plating layer by electrodeposition, wherein the coated abrasive grains are exposed from a part of the plating layer. It is a wire rod tool.
この構成によれば、切れ味を鈍らせる鍍金層の一部が取り除かれ、切れ味に優れた被覆砥粒の表面が露出しているので、被覆砥粒を用いた電着ワイヤ工具であっても、優れた切れ味のものとすることができる。 According to this configuration, a part of the plating layer that dulls the sharpness is removed, and the surface of the coated abrasive that is excellent in sharpness is exposed, so even if it is an electrodeposition wire tool using the coated abrasive, It can be of excellent sharpness.
また本発明の別の態様は、表面が金属を含む被覆層で覆われた被覆砥粒を用意するステップと、被覆砥粒を線状体の外周面に電着による鍍金層で固定するステップと、鍍金層の一部を除去して、被覆砥粒を露出させるステップと、を含む電着ワイヤ工具の製造方法である。 In another aspect of the present invention, a step of preparing coated abrasive grains whose surfaces are covered with a coating layer containing a metal, and a step of fixing the coated abrasive grains to the outer peripheral surface of the linear body with a plating layer by electrodeposition; And a step of removing a part of the plating layer to expose the coated abrasive grains.
この構成によれば、超砥粒を覆う鍍金層の一部を除去して被覆砥粒の表面を露出させるので、優れた切れ味の電着ワイヤ工具を製造することができる。また、同時に余分に付着した砥粒を除去することもできる。 According to this configuration, since a part of the plating layer covering the superabrasive grains is removed to expose the surface of the coated abrasive grains, an excellent sharp electrodeposition wire tool can be manufactured. At the same time, excessively attached abrasive grains can be removed.
本発明によれば、切れ味に優れる電着ワイヤ工具およびその製造方法が提供される。 ADVANTAGE OF THE INVENTION According to this invention, the electrodeposition wire tool excellent in sharpness and its manufacturing method are provided.
以下、本発明の実施の形態について添付図面を参照して説明する。 Embodiments of the present invention will be described below with reference to the accompanying drawings.
図1は、本実施形態に係るワイヤ工具の一部を示す斜視図である。図1に示すように、本実施形態に係るワイヤ工具10は、ピアノ線、撚り線等からなる線状体である芯線12の外周面14に、ダイヤモンド、CNB等からなる超砥粒16が電着されて構成されている。芯線の太さは例えば1mm未満とすることができる。
FIG. 1 is a perspective view showing a part of a wire tool according to the present embodiment. As shown in FIG. 1, in the
図2は、本実施形態に係るワイヤ工具の横断面図である。また、図3は、本実施形態に係るワイヤ工具の横断面の外周面付近を拡大した図である。図2および3に示すように、ワイヤ工具10の外周面14には、Ni等の鍍金層18が形成され、超砥粒16が鍍金層18に埋め込まれるように電着されている。超砥粒16の表面には、電着時の効率を向上させるため、Ti、Ni、Cu、TiC、SiCから選択されるいずれかからなる被覆層20が形成されている。鍍金層18の一部は超砥粒16の表面から除去され、超砥粒16が被加工物に接触する砥粒先端において、超砥粒16の表面が露出した露出部22となっている。なお、超砥粒16表面の被覆層20は除去されてもされなくても良い。
FIG. 2 is a cross-sectional view of the wire tool according to the present embodiment. Moreover, FIG. 3 is the figure which expanded the outer peripheral surface vicinity of the cross section of the wire tool which concerns on this embodiment. As shown in FIGS. 2 and 3, a plating
従来の被覆砥粒を用いた電着ワイヤ工具は、芯線に固定された超砥粒の表面が、柔らかい鍍金層により完全に覆われていた。そのため、被覆砥粒を用いた電着ワイヤ工具の切れ味は、被覆されていない砥粒を用いた電着ワイヤ工具よりも劣るものとなっていた。しかし、本実施形態のように被覆砥粒表面の鍍金層の一部を除去することにより、より高い硬度を持つ被覆砥粒表面が露出し、被加工物に直接接触するようになる。これにより、被覆砥粒を用いているにもかかわらず、より良好な切れ味のワイヤ工具とすることができる。 In a conventional electrodeposition wire tool using coated abrasive grains, the surface of the superabrasive grains fixed to the core wire is completely covered with a soft plating layer. Therefore, the sharpness of the electrodeposition wire tool using the coated abrasive grains is inferior to that of the electrodeposition wire tool using the uncoated abrasive grains. However, by removing a part of the plating layer on the surface of the coated abrasive as in this embodiment, the surface of the coated abrasive having higher hardness is exposed and comes into direct contact with the workpiece. Thereby, it can be set as the wire tool of the better sharpness, although coated abrasives are used.
以下、本実施形態に係るワイヤ工具の製造する方法について説明する。図4は、本実施形態に係るワイヤ工具を製造する工程を示すフロー図である。本実施形態においては、まず、被覆砥粒を製造する(S10)。次に、被覆砥粒を芯線に電着する(S12)。その後、電着した被覆砥粒の被覆層の一部を除去して、超砥粒の表面を露出させる(S14)。 Hereinafter, a method for manufacturing the wire tool according to the present embodiment will be described. FIG. 4 is a flowchart showing a process of manufacturing the wire tool according to the present embodiment. In this embodiment, first, coated abrasive grains are manufactured (S10). Next, the coated abrasive is electrodeposited on the core wire (S12). Thereafter, a part of the coating layer of the electrodeposited coated abrasive is removed to expose the surface of the superabrasive (S14).
超砥粒の表面に薄い被覆層を形成する方法としては、CVD法、PVD法、めっき法、浸漬法等を用いて形成することができる。 As a method for forming a thin coating layer on the surface of the superabrasive grains, it can be formed using a CVD method, a PVD method, a plating method, a dipping method, or the like.
図5は、本実施形態に係るワイヤ工具の芯線に超砥粒を電着する工程を示す図である。図5に示すように、鍍金槽36は鍍金浴38によって満たされている。鍍金浴38は、例えば、スルファミン酸ニッケル、塩化ニッケル、ホウ酸からなるスルファミン酸浴とされている。鍍金浴38には、前述の薄い被覆層が表面に形成された超砥粒が混入されている。芯線12は、図中の矢印方向に鍍金浴38中に浸漬されつつ搬送されるようになっている。芯線12を保持するプーリの一部は、陰極40とされ、負電位を印加されるようになっている。また、鍍金浴38中に浸漬された芯線12を囲繞するように陽極42が設けられ、正電位を印加されるようになっている。
FIG. 5 is a diagram illustrating a process of electrodepositing superabrasive grains on the core wire of the wire tool according to the present embodiment. As shown in FIG. 5, the
電着時には、芯線12を矢印方向に搬送しつつ、陰極40および陽極42に電圧を印加する。芯線12の搬送速度は、1m/分以上が可能である。鍍金浴38に混入された超砥粒は導電性の被覆膜によって覆われているため、電着を効率良く行うことができる。
At the time of electrodeposition, a voltage is applied to the
図6は、本実施形態に係るワイヤ工具の超砥粒を覆う鍍金層の一部を除去する工程を示す図である。図6に示すように、本実施形態では被覆砥粒を電着した芯線12をドレッシングストーン44に通すことにより超砥粒を覆う鍍金層18を除去する。ドレッシングストーン44は、例えば、WA、GC、鋳鉄、ガラス、石英からなるものを用いることができる。芯線12をドレッシングストーンに対して矢印方向に走行させることにより、超砥粒を覆う鍍金層の一部を除去することができる。超砥粒表面の被覆層は除去されてもされなくても良い。この場合、グリコール等の粘性の高い水溶性の溶剤や、砥粒径と同等の径のWA、GC等からなる遊離砥粒を作用面に供給することで被腹膜を除去する効率を向上させることができる。
FIG. 6 is a diagram showing a step of removing a part of the plating layer covering the superabrasive grains of the wire tool according to the present embodiment. As shown in FIG. 6, in this embodiment, the
なお、被覆膜の除去は、上記の機械的な方法の他、化学的な方法によっても行うことができる。例えば、被覆膜を溶解する薬液中に、被覆砥粒を固定した芯線を浸漬しつつ走行させることにより、被覆膜を除去するようにしてもよい。 The coating film can be removed by a chemical method in addition to the mechanical method described above. For example, you may make it remove a coating film by making it drive | work, immersing the core wire which fixed the coated abrasive grain in the chemical | medical solution which melt | dissolves a coating film.
尚、本発明のワイヤ工具およびワイヤ工具の製造方法は、上記した実施の形態に限定されるものではなく、本発明の要旨を逸脱しない範囲内において種々変更を加え得ることは勿論である。 Note that the wire tool and the method for manufacturing the wire tool of the present invention are not limited to the above-described embodiments, and it goes without saying that various changes can be made without departing from the scope of the present invention.
10…ワイヤ工具、12…芯線、14…外周面、16…超砥粒、18…鍍金層、20…被覆層、22…露出部、36…鍍金槽、38…鍍金浴、40…陰極、42…陽極、44…ドレッシングストーン。
DESCRIPTION OF
Claims (2)
前記鍍金層の一部から前記被覆砥粒が露出している電着ワイヤ工具。 An electrodeposited wire tool having a plurality of coated abrasive grains fixed to the outer peripheral surface of a linear body by a plating layer by electrodeposition,
An electrodeposited wire tool in which the coated abrasive grains are exposed from a part of the plating layer.
前記被覆砥粒を線状体の外周面に電着による鍍金層で固定するステップと、
前記鍍金層の一部を除去して、前記被覆砥粒を露出させるステップと、
を含む電着ワイヤ工具の製造方法。 Providing a coated abrasive whose surface is covered with a coating layer containing a metal;
Fixing the coated abrasive grains to the outer peripheral surface of the linear body with a plating layer by electrodeposition;
Removing a portion of the plating layer to expose the coated abrasive grains;
A method for manufacturing an electrodeposited wire tool comprising:
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CN111670088B (en) * | 2018-01-25 | 2022-03-01 | 信越半导体株式会社 | Method for cutting workpiece and wire saw |
TWI815835B (en) * | 2018-01-25 | 2023-09-21 | 日商信越半導體股份有限公司 | Cutting method of workpiece and wire saw |
KR102620550B1 (en) * | 2018-01-25 | 2024-01-03 | 신에쯔 한도타이 가부시키가이샤 | Work cutting method and wire saw |
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