JPS6360503U

JPS6360503U -

Info

Publication number: JPS6360503U
Application number: JP15414886U
Authority: JP
Priority date: 1986-10-07
Filing date: 1986-10-07
Publication date: 1988-04-22
Also published as: JPH0214891Y2

Description

[Brief explanation of the drawing]

第１図〜第７図はこの考案の一実施例を示すも
のであつて、第１図は締付用ナツトの弛緩状態に
おける縦断面図、第２図は第１図の―線の断
面矢視図、第３図はコレツトの先端側からみた端
面図、第４図Ａ及び第４図Ｂは締付用ナツトの基
端側からみた２種類の内向きフランジ部を含む端
面図、第５図は締付用ナツトの最大締付け状態に
おける縦断面図、第６図はコレツトと締付用ナツ
トの連結操作を示す縦断面図、第７図は上記連結
操作時のコレツトの挙動を示す模式端面図であり
、第８図は一般的なコレツトチヤツクにおけるコ
レツトと締付用ナツトとの連結操作を示す縦断面
図である。１１…チヤツク本体、１１ｂ……奥細テーパ孔
、１２……コレツト、１２ａ……テーパ面、１３
……締付用ナツト、１６……外向きフランジ部、
１８ａ，１８ｂ……内向きフランジ部、１９……
ナツト内周部、Ｄ_１……内向きフランジ部の内径
、Ｄ_２……ナツト内周部の内径、ｄ_１……コレツ
トの外向きフランジ部の最大外径、ｄ_２……コレ
ツトの外向きフランジ部の最小外径。 Figures 1 to 7 show one embodiment of this invention, in which Figure 1 is a longitudinal cross-sectional view of the tightening nut in a relaxed state, and Figure 2 is a cross-sectional view taken along the - line in Figure 1. Fig. 3 is an end view of the collet as seen from the distal end side, Fig. 4A and Fig. 4B are end views including two types of inward flange parts as seen from the proximal end of the tightening nut, and Fig. 5 The figure is a longitudinal sectional view of the tightening nut in its maximum tightened state, Figure 6 is a longitudinal sectional view showing the operation of connecting the collet and the tightening nut, and Figure 7 is a schematic end view showing the behavior of the collet during the above connection operation. FIG. 8 is a longitudinal sectional view showing the operation of connecting the collet and the tightening nut in a general collet chuck. DESCRIPTION OF SYMBOLS 11...chuck body, 11b...deep narrow taper hole, 12...collection, 12a...tapered surface, 13
...Tightening nut, 16...Outward flange part,
18a, 18b...Inward flange portion, 19...
Nut inner periphery, D ₁ ...inner diameter of inward flange, D ₂ ...inner diameter of nut inner periphery, d ₁ ...maximum outer diameter of outward flange of the collet, d ₂ ...outward of the collet Minimum outer diameter of flange.

Claims

[Scope of utility model registration request]

a chuck body having a deep tapered hole on the distal end side; a collet capable of diameter reduction having a tapered surface on its outer peripheral surface that is removably fitted into the deep tapered hole;
It is composed of a tightening nut that is removably connected to this collet and removably screwed onto the chuck body, and is tightened to press fit the collet into the deep tapered hole to reduce its diameter. An outward flange portion concentric with the axis of the tightening nut protrudes from the outer circumferential surface of the collet, and a pair of inward flange portions on the inner circumferential surface of the tightening nut are radially opposed to each other. The opposing inner diameter is smaller than the outer diameter when the collet is retracted, and the distances from the axis to the two inward flanges are different from each other, that is, the protrusion amounts of the two inward flanges are different from each other. protruding from the
The inner diameter of the inner peripheral part of the nut excluding the two inward flange parts is set to be larger than the outer diameter of the outward flange part when the collet diameter is expanded.