WORKPIECE VIBRATION PREVENTION DEVICE AND MACHINE TOOL HAVING THE SAME

• Main Authors: IIO TAKUMI, KOBA HIROYUKI
• Format: Patent
• Language: English; Japanese
• Published: 04.11.2016
• Subjects: COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOTDIRECTED TO A PARTICULAR RESULT; DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g.ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OFPARTICULAR DETAILS OR COMPONENTS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; TRANSPORTING

PROBLEM TO BE SOLVED: To provide a technology that enables improvement of the processing accuracy of workpieces and inhibits chatter vibration to reduce the time needed for processing.SOLUTION: A workpiece vibration prevention device 200 includes: a pinch roller 204 which is provided at a side facing a tool 202 with respect to a workpiece W, has a roller 204R serving as a slide contact part which slidably contacts with a surface of the workpiece W with a predetermined pressing force, and serves as workpiece support means which supports the workpiece W through the roller 204R; a damper cylinder 206 serving as damper means which enables the roller 204R of the pinch roller 204 to follow a shape change of the workpiece W; a knob 208 serving as adjustment means which variably adjusts the pressing force exerted on the surface of the workpiece by the roller 204R of the pinch roller 204; and an actuator 210 serving as a retreat mechanism which retreats the roller 204R of the pinch roller 204 from a contact position, at which the roller 204R contacts with the surface of the workpiece W, to a retreat position during replacement of the workpiece W.SELECTED DRAWING: Figure 3 【課題】ワークの加工精度を向上させ得る上に、ビビリ振動を抑制することで加工に要する時間を短縮することができる技術を提供する。【解決手段】ワーク振れ止め装置２００は、ワークＷに対して工具２０２と対向する側に設けられ、ワークＷの表面に所定の押圧力で摺動自在に当接する摺動当接部としてのローラ２０４Ｒを有し、このローラ２０４Ｒを介してワークＷを支持するワーク支持手段としてのピンチローラ２０４と、ピンチローラ２０４のローラ２０４ＲがワークＷの形状変化に追従することを可能にするダンパ手段としてのダンパシリンダ２０６と、ピンチローラ２０４のローラ２０４ＲによるワークＷ表面に対する押圧力を可変に調整する調整手段としてのノブ２０８と、ワークＷの交換時等に、ピンチローラ２０４のローラ２０４ＲをワークＷ表面への当接位置から退避させる退避機構としてのアクチュエータ２１０を備えている。【選択図】図３