JPH02182321A - Manufacture of precision metallic disk - Google Patents
Manufacture of precision metallic diskInfo
- Publication number
- JPH02182321A JPH02182321A JP896A JP689A JPH02182321A JP H02182321 A JPH02182321 A JP H02182321A JP 896 A JP896 A JP 896A JP 689 A JP689 A JP 689A JP H02182321 A JPH02182321 A JP H02182321A
- Authority
- JP
- Japan
- Prior art keywords
- coining
- metal material
- amount
- disk
- lubricant
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 239000000314 lubricant Substances 0.000 claims abstract description 27
- 239000007769 metal material Substances 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims description 38
- 229910052751 metal Inorganic materials 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 17
- 239000000463 material Substances 0.000 abstract description 10
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 abstract 1
- 230000003746 surface roughness Effects 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009503 electrostatic coating Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Landscapes
- Straightening Metal Sheet-Like Bodies (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (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）
本発明は、圧印加工による精密金属円板の製造方法に関
するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method for manufacturing precision metal disks by coining.
（従来の技術）
メモリーディスク用アルミニウム合金基板、鏡面板ある
いはエンコーダ用回転反射板など、きわめて平滑で平坦
な表面を必要とする精密金属板は通常、精密切削加工に
より製造されているが、精密切削加工は時間がかかり、
生産性が低いという問題があった。そこで、最近これを
硬貨の製造に通常用いられる圧印加工の利用が提案され
ている。（特開昭６１−５０２７８７号公報、特開昭６
２−１５８５３２号公報、特開昭６２−１５７３２５号
公報、特開昭６２−１５７３２６号公報、特開昭６２−
１５７３２７号公報）。(Prior art) Precision metal plates that require extremely smooth and flat surfaces, such as aluminum alloy substrates for memory disks, mirror plates, and rotary reflectors for encoders, are usually manufactured by precision cutting. Processing takes time,
There was a problem with low productivity. Therefore, it has recently been proposed to use coining, which is commonly used in the production of coins. (Unexamined Japanese Patent Publication No. 61-502787,
2-158532, JP-A-62-157325, JP-A-62-157326, JP-A-62-
157327).
圧印加工の技術は通常加工面に凹凸模様を形成する技術
であるが、従来のような凹凸模様の形成とは異なり、加
圧面の平滑なダイスを用いてブランク材に平滑な面を圧
印するというものである。Coining technology is usually a technique to form an uneven pattern on the processed surface, but unlike the conventional formation of an uneven pattern, the coining process uses a die with a smooth pressurizing surface to stamp a smooth surface on the blank material. It is something.
すなわち、精密金属円板を圧印加工で製造するには、円
板状金属材料を、加圧面の平滑な二つのダイス間に挟ん
で加圧し、ダイスの周囲に配置したダイリングで金属材
料の径方向への広がり限度を規制した状態でダイスの平
滑面を金属材料に圧印するという方法がとられている。In other words, to manufacture precision metal discs by coining, a disc-shaped metal material is sandwiched between two dies with smooth pressurizing surfaces and pressurized, and a die ring placed around the dies is used to adjust the diameter of the metal material. A method has been adopted in which the smooth surface of the die is coined onto a metal material with the limit of spread in the direction being regulated.
（発明が解決しようとする課題）
上記従来の圧印加工においては、円板状金属材料を加圧
して鏡面としての平滑性を得、同時に平坦度を満足させ
ることは困難であった。(Problems to be Solved by the Invention) In the conventional coining process described above, it was difficult to press the disk-shaped metal material to obtain mirror-like smoothness and at the same time satisfy flatness.
本発明は、上記従来の問題点を解決して鏡面としての平
滑性と平坦度を同時に満足させる精密金属円板の製造方
法を提供することを目的とするものである。SUMMARY OF THE INVENTION An object of the present invention is to provide a method for manufacturing a precision metal disk that solves the above-mentioned conventional problems and satisfies the smoothness and flatness of a mirror surface at the same time.
（課題を解決するための手段）
本発明者らは、種々の実験を行ない、鏡面としての平滑
性を得るには材料表面への潤滑剤の塗布量は少ない方が
望ましく、平坦度を得るには材料表面への潤滑剤塗布量
は多い方が望ましいこと、すなわち要求される条件が、
互いに相反することを見出し、さらに研究を重ねた結果
本発明を完成するに至った。(Means for Solving the Problems) The present inventors conducted various experiments and found that in order to obtain mirror-like smoothness, it is desirable to apply a small amount of lubricant to the material surface. It is desirable to apply a large amount of lubricant to the material surface, that is, the required conditions are:
After discovering that these are contradictory to each other and conducting further research, we have completed the present invention.
すなわち、本発明は、（１）円板状金属材料を加圧面の
平滑な二つのダイスの間に挟んで加圧し、この加圧時に
ダイスの周囲に配置したダイリングで金属材料の径方向
への広がり限度の規制をする圧印加工を少なくとも２回
行ない精密金属円板を製造する方法であって、１回目の
圧印加工時の前記円板状金属材料表面への潤滑剤塗布量
に比較して２回目の圧印加工時の前記円板状金属材料表
面への潤滑剤塗布量を多くして圧印加工を行うことを特
徴とする精密金属円板の製造方法及び（２）穴のあいた
円板状金属材料を、加圧面の平滑な２つのダイスの間に
挟んで加圧し、この加圧時にダイス中央部に配置したマ
ンドレルの外周面及びダイス周囲に配置したダイリング
の内周面の間で金属材料の径方向への広がり限度の規制
をする圧印加工を少なくとも２回行ない、精密金属円板
を製造する方法であって、１回目の圧印加工時の前記円
板状金属材料表面への潤滑剤塗布量に比較して２回目の
圧印加工時の前記円板状金属材料表面への潤滑剤塗布量
を多くして圧印加工を行うことを特徴とする精密金属円
板の製造方法を提供するものである。That is, the present invention (1) pressurizes a disc-shaped metal material by sandwiching it between two dies with smooth pressurizing surfaces, and when applying pressure, a die ring placed around the dies radially moves the metal material. A method for manufacturing a precision metal disc by performing coining at least twice to control the spread limit of A method for manufacturing a precision metal disc, characterized in that the coining process is performed by increasing the amount of lubricant applied to the surface of the disc-shaped metal material during the second coining process, and (2) a disc-shaped hole with holes. A metal material is sandwiched between two dies with smooth pressurizing surfaces and pressurized, and when this pressurization is applied, the metal material is pressed between the outer circumferential surface of a mandrel placed in the center of the die and the inner circumferential surface of a die ring placed around the die. A method for manufacturing a precision metal disk by performing coining at least twice to limit the spread of the material in the radial direction, the method comprising applying a lubricant to the surface of the disk-shaped metal material during the first coining. To provide a method for manufacturing a precision metal disk, characterized in that the coining process is performed by increasing the amount of lubricant applied to the surface of the disk-shaped metal material during the second coining process compared to the applied amount. It is.
本発明において、２回目の圧印加工時の潤滑剤の塗布量
を１回目の圧印加工時の潤滑剤の塗布量より多（するの
は、１回目の圧印加工時により得られた平坦度をさらに
向上させるためである。このような圧印加工では、種々
の実験により圧印前の金属材料表面の平滑性は圧印後も
同等もしくは圧印前より良好となる。In the present invention, the amount of lubricant applied during the second coining process is greater than the amount of lubricant applied during the first coining process. In such a coining process, various experiments have shown that the smoothness of the surface of the metal material before coining is the same or better than before coining.
したがって、圧印加工前の金属材料表面の平滑性が良好
なほど高品質の平滑かつ平坦度を有する精密金Ｒ仮を得
ることができる。Therefore, the better the smoothness of the surface of the metal material before the coining process, the higher the quality of the precision gold R temporary having smoothness and flatness.
本発明方法を効果的に利用するには、１回目の圧印加工
時の金属材料表面への潤滑剤塗布］はできる限り少な（
，２回目の圧印加工時の潤滑剤塗布量はできる限り多い
方が望ましい。具体的に説明すると、１回目の圧印加工
時の金属材料表面への潤滑剤塗布量は、５０ｍｇ／ｒ＆
未満、２回目の潤滑剤塗布量は、５０〜１００ｍｇ／ｒ
ｄが好ましい。潤滑剤としては、限定するものではない
が、粘度が低い潤滑剤がよく例えば日本工作油製Ｇ６３
１６等を好ましく用いることができる。In order to effectively utilize the method of the present invention, it is necessary to minimize the amount of lubricant applied to the surface of the metal material during the first coining process.
It is desirable that the amount of lubricant applied during the second coining process be as large as possible. To explain specifically, the amount of lubricant applied to the surface of the metal material during the first coining process was 50mg/r&
The amount of lubricant applied for the second time is 50 to 100 mg/r.
d is preferred. The lubricant is not limited, but a lubricant with low viscosity is preferable, such as G63 manufactured by Nippon Craft Oil Co., Ltd.
16 etc. can be preferably used.
潤滑剤の塗布方法は特に限定されないが、静電塗布製雪
、高精度スプレー装置を用いる方法が、均一塗布性の点
で優れている。The method of applying the lubricant is not particularly limited, but electrostatic coating and a method using a high-precision spray device are excellent in terms of uniform application.
本発明の方法は特に、高い寸法精度を要求されるメモリ
ーディスク用アルミ合金基板（サブストレート）の製造
に好適である。The method of the present invention is particularly suitable for manufacturing aluminum alloy substrates for memory disks that require high dimensional accuracy.
また、穴あき精密金属円板を圧印加工で製造する場合も
上記と同様である。Further, the same applies to the case where a perforated precision metal disk is manufactured by coining.
なお本発明に使用するダイスの加圧面の表面粗度Ｒ１は
０．０１０μｍ以下のものが好ましく用いられる。Note that the surface roughness R1 of the pressing surface of the die used in the present invention is preferably 0.010 μm or less.
（実施例）
以下に実施例に基づいて本発明をさらに詳細に説明する
。(Example) The present invention will be described in further detail based on Examples below.
５０８６−０材（Ａｔ−Ｍｇ系合金）で厚さ１．５ｍｍ
の板材を打ち抜いて外径６５ｍｍの円形ブランク材を多
数作製し、ブランク材ごとに潤滑剤の塗布量を変化させ
、加圧条件は一定として上記ブランク材の外径が６６ｍ
ｍになるように第１回目の圧印加工を行なった。5086-0 material (At-Mg alloy), thickness 1.5mm
A large number of circular blanks with an outer diameter of 65 mm were produced by punching out the plate material, and the amount of lubricant applied was varied for each blank, and the outer diameter of the blank material was 66 mm with the pressure conditions constant.
The first coining process was carried out so that the thickness was m.
さらに、上記圧印加工品に潤滑剤の塗布量を変化させ加
圧条件は一定として上記圧印加工品の外径が６７ｍｍに
なるように第２回目の圧印加工を行なった。Furthermore, a second coining process was performed so that the coined product had an outer diameter of 67 mm while changing the amount of lubricant applied to the coined product and keeping the pressure conditions constant.
なお、ダイスの加圧面の表面粗度Ｒは
０．０１０ｕｍ、そりはＯ８２ｐｍ、また、ブランク材
表面の粗度Ｒおよびそりは平均でそれぞれ０．１６０ｕ
ｍ、３０ｕｍであった。Note that the surface roughness R of the pressurizing surface of the die is 0.010 um, and the warpage is O82 pm, and the roughness R and warp of the blank material surface are each 0.160 u on average.
m, 30 um.
潤滑剤の塗布量は圧印前にエリプソメーターにより測定
した。また圧印加工後に得られたブランク材の表面の粗
度および平坦度としてのそりをそれぞれ５枚づつ測定し
それらの平均値を第１表に示した。The amount of lubricant applied was measured using an ellipsometer before coining. Further, the surface roughness and flatness of the blanks obtained after coining were measured for five blanks each, and the average values thereof are shown in Table 1.
第１表の結果から明らかなように、本発明方法による試
料の表面粗度は、第１回目の圧印加工後に得られたまま
で第２回目の圧印加工により平坦度を格段に向上させる
ことができ、平滑性および平坦度に極めて優れた精密金
属円板を得ることができた。As is clear from the results in Table 1, the surface roughness of the sample obtained by the method of the present invention remains the same as that obtained after the first coining process, and the flatness can be significantly improved by the second coining process. A precision metal disk with extremely excellent smoothness and flatness could be obtained.
（発明の効果）
このように、本発明方法によれば、鏡面としての平滑性
とともに平坦度をも同時に有する高品質の精密金属円板
を得ることができる。そして、本発明方法よれば、−工
程で平滑性とともに平坦度をも同時に有する精密金属円
板とすることができるから、効率よ（精密金属円板を製
造できる。(Effects of the Invention) As described above, according to the method of the present invention, it is possible to obtain a high-quality precision metal disk having both mirror-like smoothness and flatness. According to the method of the present invention, a precision metal disk having both smoothness and flatness can be obtained in the second step, so that the precision metal disk can be manufactured more efficiently.
特許出願人 古河アルミニウム工業株式会社同 川
崎製鉄株式会社Patent applicant Furukawa Aluminum Industries Co., Ltd. Kawasaki Steel Corporation
Claims (2)
間に挟んで加圧し、この加圧時にダイスの周囲に配置し
たダイリングで金属材料の径方向への広がり限度の規制
をする圧印加工を少なくとも２回行ない精密金属円板を
製造する方法であって、１回目の圧印加工時の前記円板
状金属材料表面への潤滑剤塗布量に比較して２回目の圧
印加工時の前記円板状金属材料表面への潤滑剤塗布量を
多くして圧印加工を行うことを特徴とする精密金属円板
の製造方法。(1) A disc-shaped metal material is sandwiched between two dies with smooth pressurizing surfaces and pressurized, and during this pressurization, a die ring placed around the dies restricts the spread of the metal material in the radial direction. A method for manufacturing a precision metal disk by performing coining at least twice, the amount of lubricant applied to the surface of the disk-shaped metal material during the first coining being greater than the amount applied during the second coining. A method for manufacturing a precision metal disk, characterized in that the coining process is performed by increasing the amount of lubricant applied to the surface of the disk-shaped metal material.
つのダイスの間に挟んで加圧し、この加圧時にダイス中
央部に配置したマンドレルの外周面及びダイス周囲に配
置したダイリングの内周面の間で金属材料の径方向への
広がり限度の規制をする圧印加工を少なくとも２回行な
い、精密金属円板を製造する方法であって、１回目の圧
印加工時の前記円板状金属材料表面への潤滑剤塗布量に
比較して２回目の圧印加工時の前記円板状金属材料表面
への潤滑剤塗布量を多くして圧印加工を行うことを特徴
とする精密金属円板の製造方法。(2) Place the perforated disc-shaped metal material on the smooth pressurizing surface.
The metal material is sandwiched between two dies and pressurized, and during this pressurization, the limit on the spread of the metal material in the radial direction is controlled between the outer circumferential surface of the mandrel placed in the center of the die and the inner circumferential surface of the die ring placed around the die. A method for manufacturing a precision metal disc by performing coining at least twice, the amount of lubricant applied to the surface of the disc-shaped metal material during the first coining is greater than the amount of lubricant applied to the surface of the disc-shaped metal material during the first coining. A method for manufacturing a precision metal disk, characterized in that coining is performed by increasing the amount of lubricant applied to the surface of the disk-shaped metal material during processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP896A JPH02182321A (en) | 1989-01-04 | 1989-01-04 | Manufacture of precision metallic disk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP896A JPH02182321A (en) | 1989-01-04 | 1989-01-04 | Manufacture of precision metallic disk |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02182321A true JPH02182321A (en) | 1990-07-17 |
Family
ID=11462384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP896A Pending JPH02182321A (en) | 1989-01-04 | 1989-01-04 | Manufacture of precision metallic disk |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02182321A (en) |
-
1989
- 1989-01-04 JP JP896A patent/JPH02182321A/en active Pending
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