JPH03107154U

JPH03107154U -

Info

Publication number: JPH03107154U
Application number: JP1349990U
Authority: JP
Priority date: 1990-02-14
Filing date: 1990-02-14
Publication date: 1991-11-05

Description

[Brief explanation of drawings]

第１図はテーパシヤンク工具ホルダの係止状態
を示す主軸支持装置の断面図、第２図はテーパシ
ヤンク工具ホルダの離脱状態を示す主軸支持装置
の断面図、第３図は第１図のＡ−Ａ線断面図であ
る。４……主軸、４ａ……テーパ穴、７……テーパ
シヤンク工具ホルダ、７ａ……テーパシヤンク部
、８……工具保持手段としてのドローバー、９…
…プルスタツド、１３，１６……第１、第２′、
クーラント導入通路、１５，１７……連通溝、１
８……クーラント導入通路、２０……バルブ、２
２……バルブ孔、２３……バネ。 Fig. 1 is a cross-sectional view of the spindle support device showing the taper shank tool holder in the locked state, Fig. 2 is a cross-sectional view of the spindle support device showing the taper shank tool holder in the disengaged state, and Fig. 3 is taken from A-A in Fig. 1. FIG. 4...Main shaft, 4a...Tapered hole, 7...Tapered shank tool holder, 7a...Tapered shank portion, 8...Drawbar as tool holding means, 9...
... Pull stud, 13, 16... 1st, 2',
Coolant introduction passage, 15, 17... Communication groove, 1
8...Coolant introduction passage, 20...Valve, 2
2... Valve hole, 23... Spring.

Claims

[Claims for Utility Model Registration] 1. A main shaft is rotatably supported in the housing via a bearing, a tapered hole is formed in the main shaft into which a taper shank portion of a taper shank tool holder can be fitted, and the taper shank tool holder is In a spindle support device in which a removable tool holding means is built into the spindle, a coolant supply passage is formed in the spindle so as to bypass a connecting portion between the tool holding means and a taper shank portion of a taper shank tool holder; A spindle support device characterized in that a coolant supply passage is opened on the slope of the taper hole, so that the opening of the coolant introduction passage opened in the taper shank portion of the taper shank tool holder and the opening of the coolant supply passage can communicate with each other. coolant supply structure. 2. The coolant supply structure in the spindle support device according to claim 1, further comprising a valve disposed in the coolant supply passage in the middle of the coolant supply passage, the valve being operable in response to attachment and detachment of the taper shank tool holder from the spindle. .