JPS63108531A - Mirror finishing method for magnetic disk substrate - Google Patents
Mirror finishing method for magnetic disk substrateInfo
- Publication number
- JPS63108531A JPS63108531A JP25640186A JP25640186A JPS63108531A JP S63108531 A JPS63108531 A JP S63108531A JP 25640186 A JP25640186 A JP 25640186A JP 25640186 A JP25640186 A JP 25640186A JP S63108531 A JPS63108531 A JP S63108531A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic disk
- disk substrate
- magnetic
- mirror finishing
- plating
- 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.)
- Pending
Links
- 239000000758 substrate Substances 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000007747 plating Methods 0.000 claims abstract description 12
- 229910017888 Cu—P Inorganic materials 0.000 claims description 2
- 238000007516 diamond turning Methods 0.000 claims 1
- 229910003460 diamond Inorganic materials 0.000 abstract description 11
- 239000010432 diamond Substances 0.000 abstract description 11
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 8
- 229910018104 Ni-P Inorganic materials 0.000 abstract description 7
- 229910018536 Ni—P Inorganic materials 0.000 abstract description 7
- 239000002904 solvent Substances 0.000 abstract description 2
- 239000010730 cutting oil Substances 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 description 4
- 238000005498 polishing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000003082 abrasive agent Substances 0.000 description 2
- 239000006061 abrasive grain Substances 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 125000001475 halogen functional group Chemical group 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
Landscapes
- Magnetic Record Carriers (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は磁気ディスク基板の鏡面仕上げ方法に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a method for mirror finishing a magnetic disk substrate.
磁気ディスク基板は、例えば特開昭５７−１８８６アル
ミ合金而または
８４ 号公報に示されるようビンフルミ合金面上に形成
された非磁性Ｎｉ−Ｐメッキ面あるいはアルミ合金面上
に形成された陽極酸化面を所要平面度及び所要平面粗さ
に鏡面仕上げしたものが使用される。The magnetic disk substrate is made of, for example, a non-magnetic Ni-P plated surface formed on a Vinfulumi alloy surface or an anodized surface formed on an aluminum alloy surface as shown in Japanese Patent Application Laid-Open No. 57-1886 aluminum alloy or Japanese Patent Publication No. 84. A mirror-finished product with the required flatness and surface roughness is used.
従来、アルミ合金面上に非磁性Ｎｉ−Ｐメッキを施した
磁気ディスク基板の鏡面仕上げ方式としては砥石を用い
た研削、ナイロンラップと砥粒を用いたラッピング、研
磨クロスと研磨砥粒を用いたポリッシング等の境面仕上
げ方式が用いられている。Conventionally, mirror finishing methods for magnetic disk substrates with non-magnetic Ni-P plating on aluminum alloy surfaces include grinding using a whetstone, lapping using nylon wrap and abrasive grains, and polishing cloth and abrasive grains. Surface finishing methods such as polishing are used.
従来のディスク基板の鏡面仕上げ方法１例えばポリッシ
ング方法では仕上面に研磨材等の残留物および残留物の
くい込みが生じ、これらを取り除くため表１に示すよう
な多くの洗浄工程により洗浄を行うことが必要であり、
これらのｔｇｒＪ浄工程全工程ても残留物を完全に除去
するのは困難とされていた。一方、高密度記録化に洋い
磁気ヘッドと磁気デニ二！との浮上間隙の低減が要求さ
れる中で、上述の鏡面仕上げによる残留異物は表８に示
すように、高りラッシュ特性、高エラーを発生し磁気デ
に４り基板の信頓性に影響をおよぼ丁という欠点があっ
た。Conventional disk substrate mirror finishing method 1 For example, in the polishing method, residues such as abrasive materials and residues get stuck in the finished surface, and in order to remove these, it is necessary to perform cleaning using many cleaning steps as shown in Table 1. is necessary,
Even in all of these tgrJ cleaning steps, it has been difficult to completely remove the residue. On the other hand, magnetic heads and magnetic devices are becoming more popular for high-density recording! As there is a demand for reduction of the flying gap between the magnetic and magnetic surfaces, the residual foreign matter caused by the above-mentioned mirror finish causes high lash characteristics and high errors, and affects the reliability of the magnetic board as shown in Table 8. It had the disadvantage of being too small.
表 １
表 ２
また、ポリッシング等による従来の鏡面仕上げ方法を用
いた場合、磁気ヘッドの浮上時の滑走路となるべきデ←
り外周部に外側に向かっての面ダレが生じるため、磁気
ヘッドのスムーズな浮上を妨害するとともにヘッドクラ
ッシュを誘発させるという欠点もあった。Table 1 Table 2 In addition, when using conventional mirror finishing methods such as polishing, the surface area that should become the runway when the magnetic head flies is
This also has the drawback of not only disturbing the smooth flying of the magnetic head but also inducing a head crash, since surface sag occurs outward on the outer periphery.
この発明は上記のような問題点を解決するためになされ
たもので、高精度な鏡面仕上げをすイス
ることかでき、信慎性の高い磁気デ呵り基板上げ方法を
得ることを目的とする。This invention was made in order to solve the above-mentioned problems, and its purpose is to provide a highly reliable method of raising a board using magnetic deformation, which can achieve a high-precision mirror finish. do.
〔問題点を解決するための手段〕
この発明に係る磁気ディスク基板の鏡面仕上げ方法は非
磁性メッキを施した磁気ディスク基板の表面をダイヤモ
ンドターン加工することにより鏡面仕上げを行うものあ
る。[Means for Solving the Problems] A method for mirror-finishing a magnetic disk substrate according to the present invention involves performing a diamond turn process on the surface of a non-magnetic plated magnetic disk substrate.
この発明における磁気ディスク基板の鏡面仕げ方法はダ
イヤモンドターン加工を用いている為、研磨材を用いず
に鏡面仕上をすることができる。Since the method for mirror finishing a magnetic disk substrate in this invention uses diamond turn processing, mirror finishing can be achieved without using an abrasive.
以下、本発明の実施１ＪＡＪを図について説明する。 Embodiment 1JAJ of the present invention will be described below with reference to the drawings.
第１図はこの発明における磁気ディスク基板の鏡面仕上
方法の手順を示す７０−図である。図において巾は磁気
ディスク基板の材料であるアルミ合金基板、（２１は非
磁性のＮｉ−Ｐメッキ、（３）はダイヤモンドターン加
工（（超精密旋削加工）をするために使用するダイヤモ
ンドバイトである。次にこの鏡面仕上方法の手順を説明
する。FIG. 1 is a diagram 70 showing the procedure of a mirror finishing method for a magnetic disk substrate according to the present invention. In the figure, the width is the aluminum alloy substrate that is the material of the magnetic disk substrate, (21 is the non-magnetic Ni-P plating, and (3) is the diamond cutting tool used for diamond turn processing (ultra-precision turning processing). Next, the procedure for this mirror finishing method will be explained.
磁気ディスク基板の表面ヲ鏡面仕上げする下地処理とし
て、アルミ合金基板；１）の上に１０〜数ｌＯμｍの非
磁性Ｎｉ−Ｐメッキ（２１を施す。この後、この非磁性
Ｎｉ−Ｐメッキ（２１の表面にダイヤモンドバイト（３
）ヲ用いて５〜ｌＯμのダイヤモンドターン加工を行う
と仕上面はミクロ的にみて規則正し一波形を有する鏡面
となる。この後光８に示すように旋削油除去のための溶
剤洗浄のみを行なえばよい。このような鋭曲仕上方法ケ
１目いた磁気ディスク基板は研−材等を用いないため、
表４に示すように耐ヘッドクラツシユ性、エラー特性に
優れ、表面精度も、所要表面粗さく０．００５μｍＲａ
以下）を確保することができる。As a base treatment for mirror-finishing the surface of the magnetic disk substrate, non-magnetic Ni-P plating (21) of 10 to several lOμm is applied on the aluminum alloy substrate (1). Diamond bite (3
) is used to perform a diamond turn process of 5 to 10μ, the finished surface becomes a mirror surface having a regular waveform when viewed microscopically. As shown in the halo 8, it is only necessary to perform solvent cleaning to remove turning oil. Magnetic disk substrates that use this sharp curved finishing method do not use abrasive materials, so
As shown in Table 4, it has excellent head crush resistance and error characteristics, and the required surface roughness is 0.005μmRa.
(below) can be secured.
表 ８
表 ４
向、上記実施例では、アルミ合金板上に非磁性Ｎｉ−Ｐ
メッキを施した磁気ディスク基板の鏡面仕上げ方式につ
いて説明したが、例えば、難、旋削被覆である非磁性Ｎ
ｉ−Ｃｕ−Ｐ等非磁性のメッキを用いた磁気ディスク基
板の鏡面仕上げ方法に適用すれば上記実施例と同様の効
果を奏する。Table 8 Table 4 In the above example, non-magnetic Ni-P was deposited on the aluminum alloy plate.
We have explained the mirror finishing method for plated magnetic disk substrates, but for example, it is difficult to use non-magnetic N, which is difficult to coat by turning.
If applied to a method for mirror finishing a magnetic disk substrate using non-magnetic plating such as i-Cu-P, the same effects as in the above embodiment can be obtained.
以上のようにこの発明によれば、非磁性メッキを施した
磁気ディスク基板の鏡面仕上げ方法としてダイヤモンド
ターン加工を用いることにより、高精度の鏡面仕上をす
ることができ信頓性の高い磁気ディスク基板を得ること
ができる。As described above, according to the present invention, by using diamond turn processing as a mirror finishing method for a non-magnetic plated magnetic disk substrate, a highly accurate mirror finish can be achieved and a highly reliable magnetic disk substrate can be obtained. can be obtained.
第１図はこの発明の一実施例である鏡面仕上方法の手順
會示すフロー図である。図においてＩｌｌはアルミ合金
基板、（２）は非磁性のＮｉ−Ｐメッキ、（３）はダイ
ヤモンドバイトである。FIG. 1 is a flowchart showing the steps of a mirror finishing method according to an embodiment of the present invention. In the figure, Ill is an aluminum alloy substrate, (2) is a non-magnetic Ni-P plating, and (3) is a diamond cutting tool.
Claims (3)
、ダイヤモンドターン加工することにより鏡面仕上げを
行なう磁気ディスク基板の鏡面仕上方法。(1) A method for mirror-finishing a magnetic disk substrate, in which the surface of a non-magnetic plated magnetic disk substrate is mirror-finished by diamond turning processing.
を特徴とする特許請求の範囲第１項記載の磁気ディスク
基板の鏡面仕上方法。(2) The method for mirror-finishing a magnetic disk substrate according to claim 1, wherein the non-magnetic plating is non-magnetic Ni--P plating.
ることを特徴とする特許請求の範囲第１項記載の磁気デ
ィスク基板の鏡面仕上方法。(3) The method for mirror-finishing a magnetic disk substrate according to claim 1, wherein the non-magnetic plating is non-magnetic Ni-Cu-P plating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25640186A JPS63108531A (en) | 1986-10-27 | 1986-10-27 | Mirror finishing method for magnetic disk substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25640186A JPS63108531A (en) | 1986-10-27 | 1986-10-27 | Mirror finishing method for magnetic disk substrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63108531A true JPS63108531A (en) | 1988-05-13 |
Family
ID=17292165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25640186A Pending JPS63108531A (en) | 1986-10-27 | 1986-10-27 | Mirror finishing method for magnetic disk substrate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63108531A (en) |
-
1986
- 1986-10-27 JP JP25640186A patent/JPS63108531A/en active Pending
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