JPS63127804U

JPS63127804U -

Info

Publication number: JPS63127804U
Application number: JP1899987U
Authority: JP
Priority date: 1987-02-12
Filing date: 1987-02-12
Publication date: 1988-08-22

Description

[Brief explanation of the drawing]

第１〜５図は本考案の一実施例としての自動芯
出し式３ジヨーチヤツク装置を示すもので、第１
図はその縦断面図（第２図の―矢視断面図）
、第２図は第１図の矢視図、第３図は第１図の
部拡大図、第４図はその要部を示す斜視図、第
５図はそのシヤフトの側面図であり、第６図は従
来の３ジヨーチヤツク装置を示す正面図である。１…スピンドル、１ａ…中空円筒穴、２…ドロ
ーバー、２ａ…支持部材、３…チヤツクボデー、
３ａ…凹所、４…シヤフト、４ａ…環状拡径部、
５…偏心ジヨー、５ａ…きざみ歯面、５ｂ…円筒
面、６…ワーク、７…プレート、８…スリーブ、
８ａ…直線状案内溝、８ｂ…円筒穴、９…二段円
筒穴、９ａ…拡径部、９ｂ…縮径部、９ｃ…環状
溝、１０…ボルト、１１…係合ピン、１２…リー
ド溝、１３…係合ピン、１４…隆起部、１４ａ…
係合部、１５…スペーサ、１５ａ…ワーク設置面
、１６…運動変換機構、１７…進退部材。 Figures 1 to 5 show an automatic centering type three-way chuck device as an embodiment of the present invention.
The figure is a longitudinal cross-sectional view (cross-sectional view taken along the - arrow in Figure 2)
, FIG. 2 is a view taken in the direction of the arrow in FIG. 1, FIG. 3 is an enlarged view of the part shown in FIG. 1, FIG. 4 is a perspective view showing the main parts, FIG. 5 is a side view of the shaft, FIG. 6 is a front view showing a conventional three-way chuck device. DESCRIPTION OF SYMBOLS 1...Spindle, 1a...Hollow cylindrical hole, 2...Drawbar, 2a...Support member, 3...Chuck body,
3a... recess, 4... shaft, 4a... annular enlarged diameter part,
5... Eccentric jaw, 5a... Notched tooth surface, 5b... Cylindrical surface, 6... Workpiece, 7... Plate, 8... Sleeve,
8a... linear guide groove, 8b... cylindrical hole, 9... two-stage cylindrical hole, 9a... enlarged diameter part, 9b... diameter reduced part, 9c... annular groove, 10... bolt, 11... engaging pin, 12... lead groove , 13... Engaging pin, 14... Protrusion, 14a...
Engagement portion, 15... Spacer, 15a... Work installation surface, 16... Movement conversion mechanism, 17... Advance/retreat member.

Claims

[Scope of utility model registration request]

In a three-way chuck device in which a chuck body is rotatably provided with three jaws provided on the same circumference and facing a central axis on a workpiece installation surface, the reciprocating member is provided so as to be movable toward and away from the workpiece installation surface. and a shaft as a rotational axis of the said Jyo with the JYO mounted on one end, and a motion conversion mechanism for converting the forward and backward movement of the forward and backward movement member into the rotational motion of the shaft, and Automatic centering type 3, characterized by the fact that the phase angles are always set to match.
Joey chuck device.