JPH0467903U - - Google Patents
Info
- Publication number
- JPH0467903U JPH0467903U JP10944290U JP10944290U JPH0467903U JP H0467903 U JPH0467903 U JP H0467903U JP 10944290 U JP10944290 U JP 10944290U JP 10944290 U JP10944290 U JP 10944290U JP H0467903 U JPH0467903 U JP H0467903U
- Authority
- JP
- Japan
- Prior art keywords
- main shaft
- bearing
- spindle
- spindle head
- outer periphery
- 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
Links
- 230000037431 insertion Effects 0.000 claims 2
- 238000003780 insertion Methods 0.000 claims 2
- 230000036316 preload Effects 0.000 claims 2
- 230000020169 heat generation Effects 0.000 claims 1
Landscapes
- Turning (AREA)
- Support Of The Bearing (AREA)
Description
図面はこの考案主軸ヘツドの断面図である。
図において、１……主軸、２……主軸ヘツド本
体、３……工具、４……テーパ孔、５……プルス
タツド、６ａ，６ｂ……軸受、７……ドローバ、
１２……円筒スリーブ、１２ａ，１２ｂ……リン
グ状溝、１５……ハウジング、１６……軸受、１
９……駆動用モータ、２３……カラー、２４……
カラー、２５……フロントカバー、２７……固定
部材。
The drawing is a sectional view of this invented spindle head. In the figure, 1...Spindle, 2...Spindle head body, 3...Tool, 4...Tapered hole, 5...Pull stud, 6a, 6b...Bearing, 7...Drawbar,
12...Cylindrical sleeve, 12a, 12b...Ring-shaped groove, 15...Housing, 16...Bearing, 1
9...Drive motor, 23...Color, 24...
Collar, 25...Front cover, 27...Fixing member.
Claims (1)
ドであつて、 この主軸ヘツドの基部をなし前記主軸軸線方向
に挿入孔を形成する主軸ヘツド本体と、 工具または被加工物を取付ける主軸と、 この主軸を回転自在に支持するため所定間隔を
有して主軸外周部に少なくとも２個以上設けられ
る複数の軸受と、 前記主軸ヘツド本体の挿入孔と前記複数の軸受
の間に設けられ、前記軸受外周部を支持すると共
に前記軸受位置に対応した外周部にリング状溝を
形成した円筒スリーブと 前記軸受に前記主軸軸線方向に荷重を負荷して
所定の予圧状態とし前記主軸の回転精度や主軸剛
性を維持させる予圧調整手段とからなり、 前記主軸の高速回転時に前記軸受よりの発熱で
、前記軸受が熱膨張したとき前記円筒スリーブの
リング状溝部が変形拡張し、前記軸受の予圧状態
の変化を最小限に抑えることを特徴とする工作機
械の主軸ヘツド。[Claims for Utility Model Registration] A spindle head for a machine tool that rotatably supports a spindle, a spindle head body forming the base of the spindle head and forming an insertion hole in the axis direction of the spindle, and a tool or a workpiece. A main shaft on which an object is attached; a plurality of bearings provided at least two on the outer periphery of the main shaft at predetermined intervals to rotatably support the main shaft; and between an insertion hole of the main shaft head body and the plurality of bearings. a cylindrical sleeve that supports the outer periphery of the bearing and has a ring-shaped groove formed on the outer periphery corresponding to the bearing position; and a preload adjustment means for maintaining rotation accuracy and main shaft rigidity, and when the bearing thermally expands due to heat generation from the bearing during high speed rotation of the main shaft, the ring-shaped groove of the cylindrical sleeve deforms and expands, causing the bearing to A spindle head for a machine tool that is characterized by minimizing changes in the preload state of the machine tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10944290U JPH0634884Y2 (en) | 1990-10-19 | 1990-10-19 | Machine tool spindle head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10944290U JPH0634884Y2 (en) | 1990-10-19 | 1990-10-19 | Machine tool spindle head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0467903U true JPH0467903U (en) | 1992-06-16 |
| JPH0634884Y2 JPH0634884Y2 (en) | 1994-09-14 |
Family
ID=31856646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10944290U Expired - Lifetime JPH0634884Y2 (en) | 1990-10-19 | 1990-10-19 | Machine tool spindle head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0634884Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002283116A (en) * | 2001-03-28 | 2002-10-03 | Sugino Mach Ltd | Boring unit |
-
1990
- 1990-10-19 JP JP10944290U patent/JPH0634884Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002283116A (en) * | 2001-03-28 | 2002-10-03 | Sugino Mach Ltd | Boring unit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0634884Y2 (en) | 1994-09-14 |