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    Shrink fit tool holder
    1.
    发明公开
    Shrink fit tool holder 审中-公开
    用热收缩SEAT刀柄

    公开(公告)号：EP2929964A1

    公开(公告)日：2015-10-14

    申请号：EP15163929.1

    申请日：2012-08-03

    申请人： MST Corporation

    发明人： Mizoguchi, Haruki

    IPC分类号： B23B31/117 ,  B23B31/00 ,  B23B31/113

    CPC分类号： B23B31/1179 ,  B23B31/005 ,  B23B31/008 ,  B23B31/113 ,  B23B2231/0256 ,  B23B2231/026 ,  B23B2240/28 ,  Y10T279/17863 ,  Y10T279/17957

    摘要： A tool holder (A) has a chuck portion (2) formed with a retaining bore (20) in which a cutting tool (30) can be inserted. The cutting tool (30) is formed with flat surfaces (32) extending from the end of the cutting tool to be inserted first into the bore (20), and with a circumferential groove (33) at the rear ends of the flat surfaces. When the cutting tool is inserted into the retaining bore (20), protrusions (21) pass through spaces (S) defined between the flat surfaces and the inner wall of the retaining bore and fitted in the groove. In this state, when the cutting tool is turned, the protrusions are moved in the length direction of the groove and engage the side edges of the groove, thus preventing the cutting tool from being pulled out of the chuck portion. When the anti-pull-out protrusions are fitted in the groove, anti-rotation protrusions (22) are located on the flat surfaces. When the cutting tool is turned, the anti-rotation protrusions (22) are received in ends of the respective spaces (S), thereby preventing rotation of the cutting tool relative to the chuck portion. The tool holder (A) is split into two separate members (1 and 2) between the protrusions (21 and 22), and the separate members (1 and 2) are joined together by electron beam welding.

    SHRINK FIT TOOL HOLDER
    4.
    发明公开
    SHRINK FIT TOOL HOLDER 有权
    用热收缩SEAT刀柄

    公开(公告)号：EP2749367A1

    公开(公告)日：2014-07-02

    申请号：EP12825769.8

    申请日：2012-08-03

    申请人： MST Corporation

    发明人： MIZOGUCHI Haruki

    IPC分类号： B23B31/117

    CPC分类号： B23B31/1179 ,  B23B31/005 ,  B23B31/008 ,  B23B31/113 ,  B23B2231/0256 ,  B23B2231/026 ,  B23B2240/28 ,  Y10T279/17863 ,  Y10T279/17957

    摘要： A tool holder (A) has a chuck portion (2) formed with a retaining bore (20) in which a cutting tool (30) can be inserted. The cutting tool (30) is formed with flat surfaces (32) extending from the end of the cutting tool to be inserted first into the bore (20), and with a circumferential groove (33) at the rear ends of the flat surfaces. When the cutting tool is inserted into the retaining bore (20), protrusions (21) pass through spaces (S) defined between the flat surfaces and the inner wall of the retaining bore and fitted in the groove. In this state, when the cutting tool is turned, the protrusions are moved in the length direction of the groove and engage the side edges of the groove, thus preventing the cutting tool from being pulled out of the chuck portion. When the anti-pull-out protrusions are fitted in the groove, anti-rotation protrusions (22) are located on the flat surfaces. When the cutting tool is turned, the anti-rotation protrusions (22) are received in ends of the respective spaces (S), thereby preventing rotation of the cutting tool relative to the chuck portion. The tool holder (A) is split into two separate members (1 and 2) between the protrusions (21 and 22), and the separate members (1 and 2) are joined together by electron beam welding.