JPS61187608U

JPS61187608U -

Info

Publication number: JPS61187608U
Application number: JP7379885U
Authority: JP
Priority date: 1985-05-17
Filing date: 1985-05-17
Publication date: 1986-11-22

Description

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

第１図は、この考案の一実施例を示す縦断正面
図、第２図は従来技術の要部縦断面図である。１……チヤツク本体、１ａ……スリーブ側チヤ
ツク本体、２……鍔部、３……シヤンク部、４…
…工具嵌着用スリーブ部、６……締付けナツト、
６ｂ……締付けナツトの端面、７……ニードルロ
ーラ群、１１……補強ナツト。 FIG. 1 is a longitudinal sectional front view showing an embodiment of this invention, and FIG. 2 is a longitudinal sectional view of the main part of the prior art. DESCRIPTION OF SYMBOLS 1...Chuck body, 1a...Sleeve side chuck body, 2...Brim part, 3...Shank part, 4...
...Tool fitting sleeve part, 6...Tightening nut,
6b... End face of tightening nut, 7... Needle roller group, 11... Reinforcement nut.

Claims

【実用新案登録請求の範囲】[Scope of utility model registration request]

ほぼ中央部にあつて外周側に突出する鍔部と、
該鍔部の一端側にあつて軸方向に延びるシヤンク
部と、該鍔部の他端側にあつて同じく軸方向に延
びる工具嵌着用スリーブ部とからなるチヤツク本
体の上記スリーブ部に、内周面をこのスリーブ部
のテーパ外周面に対応するテーパ面に形成した締
付けナツトを、テーパ面の母線に対し軸心が傾斜
するよう装入したニードルローラ群を介して回動
自在に外嵌合し、上記スリーブ部の弾性変形によ
り、これに嵌合される工具を掴持するようにした
チヤツクにおいて、鍔部に隣接してスリーブ部側
チヤツク本体に雄ねじ部を形成し、これに補強ナ
ツトを回転自在に螺合し、該補強ナツトを上記締
付ナツトの端面に圧接状態に締付けることができ
るようになつていることを特徴とするチヤツク。 a flange located approximately in the center and protruding toward the outer periphery;
The sleeve part of the chuck main body consists of a shank part located at one end of the flange and extending in the axial direction, and a tool fitting sleeve part located at the other end of the flange and also extending in the axial direction. A tightening nut having a tapered surface corresponding to the tapered outer circumferential surface of the sleeve portion is rotatably fitted to the outside via a needle roller group inserted so that its axis is inclined with respect to the generatrix of the tapered surface. In the chuck, which grips a tool fitted to the sleeve by elastic deformation of the sleeve, a male thread is formed on the chuck main body on the sleeve side adjacent to the collar, and a reinforcing nut is rotated on this chuck. A chuck characterized in that the chuck is freely screwed together and the reinforcing nut can be tightened in pressure contact with the end face of the tightening nut.