JPH0473404U

JPH0473404U -

Info

Publication number: JPH0473404U
Application number: JP11559990U
Authority: JP
Priority date: 1990-11-02
Filing date: 1990-11-02
Publication date: 1992-06-26

Description

[Brief explanation of the drawing]

第１図は本考案による工具保持装置であつて、
チヤツク筒開放状態を示す縦断面上半分図、第２
図は第１図の要部の拡大図、第３図はチヤツク筒
締付状態を示す本考案による工具保持装置の縦断
面上半分図、第４図は第３図の要部の拡大図、第
５図は環状側板単体の正面図、第６図は撓ませた
状態で示す第５図の側板の側面図、第７図は側板
の変形例を示す正面図、第８図、第９図及び第１
０図はそれぞれ側板の別の変形例を示す縦断面部
分拡大図、第１１図は従来の工具保持装置であつ
て、回動筒開放状態を示す縦断面上半分図、第１
２図は第１１図の拡大部分図、第１３図はチヤツ
ク筒締付状態を示す第１２図と同じ部分の拡大部
分図、第１４図はさらに別の従来例の縦断面部分
拡大図である。１１……チヤツク筒、１３……転動体、１５…
…外周面、１６……回動筒、１７……内周面、２
０……環状溝、２３……側板、２３ａ……外周端
縁、２３ｂ……内周端縁、２４……押圧リング。 FIG. 1 shows a tool holding device according to the present invention,
Upper half view of longitudinal section showing chuck tube open state, 2nd
The figures are an enlarged view of the main parts of Fig. 1, Fig. 3 is a longitudinal cross-sectional upper half view of the tool holding device according to the present invention showing the chuck cylinder tightened state, and Fig. 4 is an enlarged view of the main parts of Fig. 3. Fig. 5 is a front view of the annular side plate alone, Fig. 6 is a side view of the side plate of Fig. 5 shown in a bent state, Fig. 7 is a front view showing a modification of the side plate, Figs. 8 and 9. and the first
0 is a partially enlarged vertical cross-sectional view showing another modified example of the side plate, FIG.
Fig. 2 is an enlarged partial view of Fig. 11, Fig. 13 is an enlarged partial view of the same part as Fig. 12 showing the chuck cylinder tightened state, and Fig. 14 is a partially enlarged vertical cross-sectional view of another conventional example. . 11...chuck tube, 13...rolling element, 15...
...Outer circumferential surface, 16... Rotating tube, 17... Inner circumferential surface, 2
0...Annular groove, 23...Side plate, 23a...Outer peripheral edge, 23b...Inner peripheral edge, 24...Press ring.

Claims

[Scope of utility model registration request]

The chuck tube is provided with a chuck tube for gripping a tool, and a rotary tube that fits onto the outer circumferential surface of the chuck tube via a rolling element. In a tool holding device that reduces or expands the diameter of the chuck tube by moving the rotating tube, the rolling element, and the chuck tube relative to each other in the axial direction by rotation of the chuck tube, a seal is attached to the outer periphery of the tip of the chuck tube. An annular groove for attachment is formed, a metal annular side plate for sealing and an annular pressure ring are fitted into the annular groove, and the annular side plate has an outer diameter that comes into close contact with the inner peripheral surface of the rotating cylinder when the chuck cylinder is tightened, and It has an inner diameter with a gap from the bottom surface of the annular groove, and the annular side plate has the rigidity to bend in the axial direction when the chuck is tightened, and the annular pressing ring presses the inner peripheral end portion of the annular side plate in the axial direction. A seal structure for a tool holding device, characterized in that it has an axial width that provides a seal.