JPH0243145U

JPH0243145U -

Info

Publication number: JPH0243145U
Application number: JP12224588U
Authority: JP
Priority date: 1988-09-19
Filing date: 1988-09-19
Publication date: 1990-03-26

Description

[Brief explanation of the drawing]

第１図は使用状態を示す一部縦断側面図、第２
図は要部の拡大縦断側面図、第３図は変形例を示
す要部の縦断側面図である。１…センター給油式工具チヤツク、２…テーパ
ーシヤンク部、６…給油通路、７…プルスタツド
ボルト、１２…給油孔、１２ａ…外広がりテーパ
ー状開口部、１３…主軸、１４…取付孔、１５…
ドローバー、１６…給油管、１８，１９…弾性オ
イルシール材、２０…先細り先端部、２０ａ…テ
ーパー状周面。 Figure 1 is a partially longitudinal side view showing the state of use;
The figure is an enlarged vertical side view of the main part, and FIG. 3 is a vertical side view of the main part showing a modification. DESCRIPTION OF SYMBOLS 1...Center oil supply type tool chuck, 2...Tapered shank portion, 6...Oil supply passage, 7...Pull stud bolt, 12...Oil supply hole, 12a...Outwardly expanding tapered opening, 13...Main shaft, 14...Mounting hole, 15 …
Draw bar, 16...Oil supply pipe, 18, 19...Elastic oil seal material, 20...Tapered tip, 20a...Tapered peripheral surface.

Claims

[Scope of utility model registration request]

In a center oil supply type tool chuck with a pull stud bolt with an oil supply hole protruding from the tip of the taper shank, the opening of the oil supply hole that opens at the tip of the pull stud bolt is expanded outward with an elastic oil sealing material into a tapered shape. or an elastic oil seal material is fitted and attached to the inner periphery of the outwardly expanding tapered opening, and when the tapered shank portion is fitted and fixed within the machine tool main spindle, the inside of the main spindle A center oil supply type tool chuck configured such that a tapered circumferential surface of a tapered tip of an oil supply pipe disposed in the center is in pressure contact with the elastic oil seal material.