JPS59165283A - Spindle for magnetic disc device - Google Patents

Spindle for magnetic disc device

Info

Publication number
JPS59165283A
JPS59165283A JP3924283A JP3924283A JPS59165283A JP S59165283 A JPS59165283 A JP S59165283A JP 3924283 A JP3924283 A JP 3924283A JP 3924283 A JP3924283 A JP 3924283A JP S59165283 A JPS59165283 A JP S59165283A
Authority
JP
Japan
Prior art keywords
pulley
spindle
self
magnetic disk
working
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.)
Granted
Application number
JP3924283A
Other languages
Japanese (ja)
Other versions
JPS6348102B2 (en
Inventor
Mikio Azuma
東 三紀夫
Hiroshi Nishida
博 西田
Takashi Iizuka
隆 飯塚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP3924283A priority Critical patent/JPS59165283A/en
Publication of JPS59165283A publication Critical patent/JPS59165283A/en
Publication of JPS6348102B2 publication Critical patent/JPS6348102B2/ja
Granted legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B17/00Guiding record carriers not specifically of filamentary or web form, or of supports therefor
    • G11B17/02Details
    • G11B17/022Positioning or locking of single discs
    • G11B17/028Positioning or locking of single discs of discs rotating during transducing operation
    • G11B17/0282Positioning or locking of single discs of discs rotating during transducing operation by means provided on the turntable

Landscapes

  • Rotational Drive Of Disk (AREA)

Abstract

PURPOSE:To realize a spindle with high accuracy by incorporating a pulley for self-turning working for the final finish of a spindle in the inside of a pulley for magnetic disc driving so as to attain low vibration at the working by self- turning. CONSTITUTION:Only the pulley 15 for self-turning working is mounted at the self-turning working and a hub 10 is turned by using it so as to process a disc positioning face 10A. Then, in assembling the spindle 2 not mounted with a magnetic disc driving pulley 7 and a base, the pulley 15 is not removed but the pulley 7 is fitted thereupon. Thus, the adverse effect on a bearing 14 due to the shock at mounting and disassembling of the pulley 15 is prevented so as to extend the service life of the spindle and to improve the vibrating characteristic. Since the pulley 15 is coupled strongly by a key 18, a washer 16 and a bolt 17, the vibration generated by the disc positioning face 10A is small and the working with less run-out is attained.

Description

【発明の詳細な説明】 〔発明の利用分野〕 本発明は、磁気ディスク装置用スピンドルに係り、特(
大型磁気ディスク装置に好適な磁気ディスク用スピンド
〃に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a spindle for a magnetic disk device, and particularly relates to a spindle for a magnetic disk device.
The present invention relates to a magnetic disk spindle suitable for large-sized magnetic disk devices.

〔従来技術〕[Prior art]

第1図に、一般的な磁気ディスク装置の概略図を示す。 FIG. 1 shows a schematic diagram of a general magnetic disk device.

磁気ディスク装置は、磁気ディスク1を積層したスピン
ドル2と、ヘッド3を電磁誘導力により所定位置に位置
決めするヘッド位置決め機構4と、それらを締結保持す
るベース5と、防塵用カバー6とを有し、スピンドル2
には駆動用プーリー7が取付げられ、ベルト8を介して
駆動用モーター9によって駆動する。
The magnetic disk device includes a spindle 2 on which magnetic disks 1 are stacked, a head positioning mechanism 4 that positions the head 3 at a predetermined position by electromagnetic induction, a base 5 that fastens and holds them, and a dustproof cover 6. , spindle 2
A drive pulley 7 is attached to the drive pulley 7 and is driven by a drive motor 9 via a belt 8.

近年、磁気ディスク装置の記憶容量増大に伴い、磁気デ
ィスク装置用スピンドルの回転撮れ防止の精度を向上さ
せる必要が生じ、スピンドル組立後、実装時と同様のベ
ルト張力を加えた状態で、磁気ディスク1を保持するハ
ブ10(第2図参照)のディスク位置決め面10Aの自
己回転加工を行うようになった。
In recent years, with the increase in the storage capacity of magnetic disk drives, it has become necessary to improve the accuracy of preventing rotation of the spindle for magnetic disk drives. The disk positioning surface 10A of the hub 10 (see FIG. 2) that holds the disk is now self-rotating.

第2図および第3図に、従来技術のスピンドル構造を示
す。磁気ディスク1(第1図参照)を保持するハブ10
は、シャン)11に焼きばめ等の方  法で結合されて
おり、上部ベアリング(図示せず)と下部ベアリング1
4によりハウジング13に回転可能に支持されている。
2 and 3 show prior art spindle structures. A hub 10 that holds a magnetic disk 1 (see Figure 1)
is connected to the shaft (shank) 11 by a method such as shrink fit, and the upper bearing (not shown) and lower bearing 1
4 is rotatably supported by the housing 13.

また、シャフト11下部には自己回転加工用プーリー1
5がワッシャ16とボルト17により固定されており、
上部ベアリングと下部ベアリング14の間にはカラー1
2が挿入されている。さらに、下部ベアリング14の外
輪にプリロード(予圧)がバネ20により加えられてお
り、安屋な回転を得る構造となっている。
In addition, a pulley 1 for self-rotation processing is installed at the bottom of the shaft 11.
5 is fixed by a washer 16 and a bolt 17,
There is a collar 1 between the upper bearing and the lower bearing 14.
2 has been inserted. Furthermore, a preload is applied to the outer ring of the lower bearing 14 by a spring 20, resulting in a structure that provides smooth rotation.

第2図に示す構造において、実装時と同様のベルト張力
を自己回転加工用プーリー15に与えて回転させつつデ
ィスク位置決め面10Aの自己1回転加工を行い、しか
る後、自己回転加工用ブーIJ−15を取外し、第3図
に示すごとく、駆動用プーリー7をキー18とワッシャ
16とボルト17によりシャフト11に固定している。
In the structure shown in FIG. 2, the same belt tension as during mounting is applied to the self-rotating processing pulley 15 to rotate the disk positioning surface 10A, and after that, the self-rotating processing pulley 15 is rotated. 15 is removed, and the drive pulley 7 is fixed to the shaft 11 with a key 18, washer 16, and bolt 17, as shown in FIG.

なお、自己回転加工用プーリー15は、径の大小、スピ
ンドルの回転数等の自己回転加工時の加工技術上の問題
から、駆動用プーリー7に代替させることはできない必
要不可欠のものである。
Note that the pulley 15 for self-rotation processing is an essential component that cannot be replaced by the drive pulley 7 due to processing technology problems during self-rotation processing such as the size of the diameter and the number of revolutions of the spindle.

上記のように、従来技術のスピンドルでは、自己回転加
工用プーリー15を自己回転加工時に、取付け、取外し
する構造となっているため次のような欠点があった。
As described above, the conventional spindle has the following drawbacks because the pulley 15 for self-rotation processing is attached and removed during self-rotation processing.

(1)自己回転加工用プーリー15が取外し構造のため
強固に結合できない(自己回転加工時(第2図の状態)
には回転強度を保証するためのキー18を圧入できず、
すきま結合である)ので加工時の振動により加工後のス
ピンドルの精度、振動特性に悪影響を与える。
(1) The pulley 15 for self-rotation processing cannot be firmly connected due to its removable structure (during self-rotation processing (state shown in Figure 2))
The key 18 to ensure rotational strength could not be press-fitted into the
(This is a gap coupling), so vibration during machining has a negative impact on the accuracy and vibration characteristics of the spindle after machining.

(2)自己回転加工用プーリー15取付け、取外し時に
、上部ベアリング(図示せず)と下部ベアリング14に
衝撃力が加わり、ベアリングを損傷する場合がしばしば
あり、スピンドル寿命、振動特性に悪影響を与える。
(2) When attaching and detaching the self-rotating pulley 15, impact force is applied to the upper bearing (not shown) and the lower bearing 14, often damaging the bearings and adversely affecting spindle life and vibration characteristics.

(3)取付け、取外しの手間がかかり工数増となる。(3) Installation and removal are time-consuming and increase man-hours.

〔発明の目的〕[Purpose of the invention]

本発明の目的は、上記の如き従来技術の欠点を改善し、
磁気ディスク装置用スピンドルの自己回転加工時の振動
を低減し、高精度なスピンドルを得ることにある。
The purpose of the present invention is to improve the drawbacks of the prior art as described above,
The object of the present invention is to reduce vibrations during self-rotation processing of a spindle for a magnetic disk device and obtain a highly accurate spindle.

〔発明の概要〕[Summary of the invention]

上記目的を達成するため、本発明は、磁気ディスク回転
駆動用スピンドルにおいて、該スピンドルの最終仕上げ
のだめの自己回転加工用プーリーを、磁気ディスク駆動
用プーリーの内側に内蔵せしめることにより、自己回転
加工時の低振動化をはかり、高精度なスピンドルを実現
することを特徴とする。
In order to achieve the above object, the present invention provides a spindle for driving magnetic disk rotation, in which a pulley for self-rotation processing for final finishing of the spindle is built inside the pulley for driving magnetic disk. The spindle is characterized by low vibration and high precision spindle.

〔発明の実施例〕[Embodiments of the invention]

以下、本発明の一実施例を第4図により説明する。スピ
ンドル構成部品は、磁気ディスクを積ノ藷するハブ10
.該ノーズ10と焼(了め等σ〕方法で結合されたシャ
フト11.該シャフト11を支1寺スる上部ベアリング
(図示せず)および下部ベアリング14.該ベアリング
を支承するノーウジング13゜およびカラー12. ノ
(ネ20等である。これらを組立てた後、磁気ディスク
位置決め面10Aの回転振れを矯正(自己回転加工)す
るための自己回転加工用プーリー15をボルト17.ワ
ッシャ16゜キー18により強固にシャフト11に締結
し、自己回転加工後、磁気ディスク駆動用プーリー7を
複数個のネジ19で自己回転加工用プーリー15に締結
する構造となっている。
An embodiment of the present invention will be described below with reference to FIG. The spindle component is a hub 10 that holds the magnetic disk.
.. A shaft 11 coupled to the nose 10 by a firing method. An upper bearing (not shown) and a lower bearing 14 that support the shaft 11. A nose ring 13° and a collar that support the bearing. 12. After assembling these, attach the pulley 15 for self-rotation processing to correct the rotational runout of the magnetic disk positioning surface 10A (self-rotation processing) using the bolt 17, washer 16° key 18. It is firmly fastened to the shaft 11, and after self-rotation processing, the magnetic disk drive pulley 7 is fastened to the self-rotation processing pulley 15 with a plurality of screws 19.

自己回転加工時には、上記自己回転加工用プーリー15
.磁気ディスク駆動用プーリー7のうち自己回転加工用
プーリー15のみが装着されており、該自己回転加工用
プーリー15を使j刊しノ・フ゛10を回転させ、ディ
スク位置決め面10Aを力日工する。その後、磁気ディ
スク駆動用ブ IJ −7未装着状態のスピンドル2と
ベース5(第1図参照)とを組立てる際に、自己回転加
工用ブーIJ−15を取外すと、となく、その上に磁気
ディスク駆動用プーリー■を取付ける。
During self-rotation processing, the above-mentioned self-rotation processing pulley 15
.. Of the pulleys 7 for driving the magnetic disk, only the pulley 15 for self-rotation processing is installed, and the pulley 15 for self-rotation processing is used to rotate the plate 10 and to rotate the disk positioning surface 10A. . After that, when assembling the spindle 2 and the base 5 (see Figure 1) without the magnetic disk drive block IJ-7 installed, when the self-rotating process block IJ-15 was removed, a magnetic disk was placed on top of it. Install the disc drive pulley ■.

このように、自己回転加工用プーリー15の取付け、取
外し工程を省くことにより、取イ寸け、取外し時の衝撃
によるベアリング14への態形4を防止することができ
、スピンドルの長寿化、振動特性の向上がはかれる。
In this way, by omitting the process of attaching and detaching the pulley 15 for self-rotating processing, it is possible to prevent the bearing 14 from being damaged due to the impact when taking it out or removing it, thereby extending the life of the spindle and reducing vibration. Characteristics can be improved.

自己回転加工用プーリー15は、キー18.  ワッシ
ャ16.およびボルト17で強固に結合されているため
、ディスク位置決め面IC)Aにて発生する振動が小さ
く、振れの小さい加工か可Hしである。
The self-rotating processing pulley 15 is operated by the key 18. Washer 16. Since they are firmly connected by the bolts 17, the vibration generated at the disk positioning surface IC)A is small, and machining with small runout is possible.

従って、高精度なスピンドルを提供するご二と力くでき
る。
Therefore, we are able to provide high precision spindles.

また、スピンドル駆動力を確保するために&ま、大口径
の磁気ディスク駆動用プーリー7を必要とするが、振動
低減のためには磁気ディスク駆動用プーリー7は慣性の
小さいものとし、これとシャン)11の結合力を強固に
する方が有利である。
In addition, in order to secure the spindle driving force, a large-diameter magnetic disk drive pulley 7 is required, but in order to reduce vibration, the magnetic disk drive pulley 7 should have a small inertia, and it should be combined with a shunt. ) It is more advantageous to strengthen the bonding force of 11.

従って、磁気ディスク駆動用プーリー7とシャン)11
との締結軸力を強くするためには、磁気ディスク駆動用
グーリーフ自体の材料的強度が必要となる。本実施例で
は、自己回転加工用ブーIJ−15を剛性の高い鉄製と
してシャフト11との締結軸力を確保し、磁気ディスク
駆動用プーリー7をアルミ製とし自己回転加工用グーリ
ー15に締結することにより、磁気ディスク駆動用プー
リー7の慣性を小さくすることを実現している。
Therefore, magnetic disk drive pulley 7 and shaft 11
In order to increase the axial force for fastening with the magnetic disk, the material strength of the magnetic disk drive green leaf itself is required. In this embodiment, the self-rotating processing boo IJ-15 is made of iron with high rigidity to secure the axial force for connection with the shaft 11, and the magnetic disk drive pulley 7 is made of aluminum and is fastened to the self-rotating processing gooley 15. This makes it possible to reduce the inertia of the magnetic disk drive pulley 7.

〔発明の効果〕〔Effect of the invention〕

以上説明したように、不発明によれば、自己回転加工用
プーリーをスピンドルに内蔵せしめ、自己回転加工用グ
ーリーをシャフトに強固に結合できるため、自己回転加
工時の振動が低減でき、高精度のスピンドルを得ること
ができる。
As explained above, according to the invention, the pulley for self-rotating machining is built into the spindle and can be firmly connected to the shaft, so vibrations during self-rotating machining can be reduced and high precision can be achieved. You can get a spindle.

【図面の簡単な説明】[Brief explanation of drawings]

一第コ1図は一般的な磁気ディスク装置の断面図、第2
図は従来技術において、自己回転加工用プーリーを取付
げた状態のスピンドルの断面図、第3図は従来技術にお
いて、磁気ディスク駆動用プーリーを取付けた状態のス
ピンドルの部分断面図、第4図は本発明の一実施例を示
す断面図である。 2ニスピンドル、7:磁気ディスク駆動用グーIJ−1
10:ハブ、10A:ディスク位置決め面、11:シャ
フト、15=自己回転加工用プーリー、18:キー ・)−1図 17              1’/第   41
′4
Figure 1 is a cross-sectional view of a general magnetic disk device, Figure 2
The figure is a cross-sectional view of a spindle with a self-rotating pulley attached in the prior art, FIG. 3 is a partial cross-sectional view of a spindle with a magnetic disk drive pulley attached in the prior art, and FIG. FIG. 1 is a sectional view showing an embodiment of the invention. 2 spindle, 7: magnetic disk drive goo IJ-1
10: Hub, 10A: Disk positioning surface, 11: Shaft, 15 = Pulley for self-rotating processing, 18: Key・)-1 Fig. 17 1'/No. 41
'4

Claims (1)

【特許請求の範囲】[Claims] (1)磁気ディスク駆動用プーリーを有する磁気ディス
ク回転駆動用のスピンドルにおいて、該スピンドルの最
終仕上げのための自己回転加工用プーリーを、前記磁気
ディスク駆動用プーリーの内側に内蔵せしめたことを特
徴とする磁気ディスク装置用スピンドル。
(1) A magnetic disk rotation drive spindle having a magnetic disk drive pulley, characterized in that a self-rotation processing pulley for final finishing of the spindle is built inside the magnetic disk drive pulley. spindle for magnetic disk drives.
JP3924283A 1983-03-11 1983-03-11 Spindle for magnetic disc device Granted JPS59165283A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3924283A JPS59165283A (en) 1983-03-11 1983-03-11 Spindle for magnetic disc device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3924283A JPS59165283A (en) 1983-03-11 1983-03-11 Spindle for magnetic disc device

Publications (2)

Publication Number Publication Date
JPS59165283A true JPS59165283A (en) 1984-09-18
JPS6348102B2 JPS6348102B2 (en) 1988-09-27

Family

ID=12547656

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3924283A Granted JPS59165283A (en) 1983-03-11 1983-03-11 Spindle for magnetic disc device

Country Status (1)

Country Link
JP (1) JPS59165283A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6134771A (en) * 1984-06-01 1986-02-19 パプスト ライセンシング ゲーエムベーハー Disc driver
JPS6148168A (en) * 1984-08-11 1986-03-08 Fujitsu Ltd Spindle unit assembling method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6134771A (en) * 1984-06-01 1986-02-19 パプスト ライセンシング ゲーエムベーハー Disc driver
JPH07176132A (en) * 1984-06-01 1995-07-14 Papst Motoren Gmbh & Co Kg Disk drive
JPS6148168A (en) * 1984-08-11 1986-03-08 Fujitsu Ltd Spindle unit assembling method
JPS6357876B2 (en) * 1984-08-11 1988-11-14 Fujitsu Ltd

Also Published As

Publication number Publication date
JPS6348102B2 (en) 1988-09-27

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