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    • 7. 发明公开
    • Blade mounting device in cutting tool
    • SägeblattaufspannvorrichtungfürSchneidwerkzeuge
    • EP0727270A1
    • 1996-08-21
    • EP96102290.2
    • 1996-02-15
    • MAKITA CORPORATION
    • Okubo, HidekiHiramatsu, Shinichi
    • B23D51/10
    • B23D51/10Y10T83/6875Y10T83/9481
    • A blade mounting device is operable for mounting a blade (B) on a drive shaft (21) of a cutting tool (1) which is moved in a predetermined motion for a cutting operation. The blade mounting device includes an operation knob (60) mounted on a body (2) of the cutting tool and adapted to be rotated by an operator. An actuation rod (31) is mounted on the drive shaft (21) and is movable with the drive shaft (21) and rotatable relative to the drive shaft (21). A holder device (4) is mounted on the drive shaft (21) for holding and releasing the blade (B) in response to the rotation of the actuation rod (31) relative to the drive shaft (21). A connection member (64) is rotatable with the operation knob (60) and is disposed on the same axis as the actuation rod (31). A connecting mechanism is provided for connecting the connection member (64) and the actuation rod (31) to each other, so that the connection member (64) and the actuation rod (31) are axially movable relative to each other and are rotatable together with each other. The connecting mechanism includes a shaft (64a) provided on one of the connection member (64) and the actuation rod (31) and includes an axial hole (61b) provided on the other for receiving the shaft.
    • 叶片安装装置可操作用于将刀片(B)安装在切割工具(1)的驱动轴(21)上,该切割工具以预定的运动方式移动以进行切割操作。 叶片安装装置包括安装在切割工具的主体(2)上并适于由操作者旋转的操作旋钮(60)。 致动杆(31)安装在驱动轴(21)上并且可与驱动轴(21)一起移动并相对于驱动轴(21)旋转。 保持装置(4)安装在驱动轴(21)上,用于响应于致动杆(31)相对于驱动轴(21)的旋转而保持和释放叶片(B)。 连接构件(64)可随着操作旋钮(60)旋转并且设置在与致动杆(31)相同的轴上。 提供一种用于将连接构件(64)和致动杆(31)彼此连接的连接机构,使得连接构件(64)和致动杆(31)能够相对于彼此轴向移动并且可一起旋转 与对方 连接机构包括设置在连接构件(64)和致动杆(31)中的一个上的轴(64a),并且包括设置在另一个上用于接收轴的轴向孔(61b)。