JPS60131336U - Tool attachment tightening device - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

第１図はこの考案の緊締装置ばより工具アタチメントを
装着した工作機械の工具主軸頭の一部を断面とした部分
正面図、第２図は第１図に示すこの考案の緊締装置の部
分拡大断面図で、第２Ａ図は工具アタチメントを土具主
軸頭に装着する前或いは切削終了後、工具アタチメント
の緊締を解除して取り外した状態の説明断面図、第２Ｂ
図は工具アクチメントを緊締した状態の説明断面図、第
２Ｃ図は工具アタチメントに対する油圧緊締力が低下し
た状態の説明断面図である。Fig. 1 is a partial front view showing a section of a tool spindle head of a machine tool equipped with a tightening tool attachment of this invention, and Fig. 2 is an enlarged partial view of the tightening device of this invention shown in Fig. 1. In the sectional views, Fig. 2A is an explanatory sectional view of the state in which the tool attachment is released and removed before the tool attachment is attached to the tool spindle head or after cutting is completed, and Fig. 2B
The figure is an explanatory cross-sectional view of a state where the tool actuation is tightened, and FIG. 2C is an explanatory cross-sectional view of a state where the hydraulic tightening force on the tool attachment is reduced.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 工具主軸頭の先端部に交換自在に装着され工具と被加工
物との相対位置制御により切削加工を行なう工作機械の
工具アタチメ７トを緊締する装置において、工具アタチ
メント本体の装着面に曲設した複数のプレスタンドと、
工具主軸頭の先端部に凹設され工具アタチメント交換の
とき挿入された前記プルスタッドと係合離脱する複数の
クランプボールを遊嵌するホルダーを一体的に固着し軸
方向に流体圧作動する第１のピストン部材並びに前記プ
レスタンドと協働して前記クランプボールをホルダの内
外周面より出没させるボールガイドを内周面に形成して
前記第１のピストン部材と同心に配列され且つ相互に相
反する向きに連動して軸方向に流体圧作動する第２のピ
ストン部材全台む複数の緊締手段とを備えたことを特徴
とする工具アタチメント緊締装置。A device that is replaceably attached to the tip of the tool spindle head and tightens the tool attachment of a machine tool that performs cutting by controlling the relative position of the tool and the workpiece. multiple press stands,
A first holder that is recessed in the tip of the tool spindle head and that is hydraulically operated in the axial direction and integrally fixes a holder that loosely fits a plurality of clamp balls that engage and disengage with the pull stud that is inserted when replacing the tool attachment. A ball guide is formed on the inner circumferential surface of the holder in cooperation with the piston member and the press stand to cause the clamp ball to protrude and retract from the inner and outer circumferential surfaces of the holder, and is arranged concentrically with the first piston member and opposite to each other. A tool attachment tightening device characterized by comprising a plurality of tightening means including a second piston member that operates hydraulically in the axial direction in conjunction with the direction.