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    • 1. 发明授权
    • Machine tool with automatic tool change function
    • 机床具有自动换刀功能
    • US4409721A
    • 1983-10-18
    • US322271
    • 1981-11-17
    • Tamaki TomitaKenichi MunekataFumihiko OhkoshiToshifumi Hasegawa
    • Tamaki TomitaKenichi MunekataFumihiko OhkoshiToshifumi Hasegawa
    • B23Q3/157B23Q3/155B23Q5/20
    • B23Q5/20B23Q3/15553Y10S279/90Y10T409/309408Y10T409/309464Y10T483/13Y10T483/1745Y10T483/1767
    • A machine tool with an automatic tool change function wherein a rotatable tool spindle carries a movable key engageable with either of a pair of key-ways formed on a tool. A tool changing arm, serving as a tool support device, friction-rotatably supports at least one tool for being selectively inserted within and removed from the tool spindle. When tool changing operation is to be performed, rotation of the spindle is changed to a predetermined speed permitting key-engagement. A first confirming device is provided for confirming the fact that the spindle has reached a first predetermined position during rotation thereof. The tool change arm is then operated to remove the tool from the spindle in response to the first confirming device. A second confirming device is provided for confirming that the spindle has reached a second predetermined position during rotation thereof. Prior to insertion of the tool into the spindle, the movable key is withdrawn, and in response to the second confirming device the movable key is moved outwardly into engagement with the predetermined key-way of the first and second key-ways.
    • 一种具有自动换刀功能的机床,其中可旋转工具主轴承载可与形成在工具上的一对键槽中的任一个接合的可移动键。 一种用作工具支撑装置的换刀臂,摩擦可旋转地支撑至少一个用于选择性地插入到工具主轴内和从工具主轴移除的工具。 当要执行换刀操作时,主轴的旋转改变为允许键接合的预定速度。 提供了第一确认装置,用于确认主轴在旋转期间已到达第一预定位置的事实。 然后响应于第一确认装置操作工具更换臂以从主轴移除工具。 提供第二确认装置,用于确认主轴在旋转期间已到达第二预定位置。 在将工具插入主轴之前,可移动键被拉出,并且响应于第二确认装置,可移动键向外移动以与第一和第二键通道的预定键方向接合。
    • 2. 发明授权
    • Machine tool with automatic tool change
    • 机床具有自动换刀功能
    • US4356621A
    • 1982-11-02
    • US216833
    • 1980-12-15
    • Tamaki TomitaKenichi MunekataFumihiko OhkoshiToshifumi Hasegawa
    • Tamaki TomitaKenichi MunekataFumihiko OhkoshiToshifumi Hasegawa
    • B23Q3/155B23Q16/06B23Q3/157
    • B23Q3/15553B23Q16/065Y10T409/309408Y10T409/309464Y10T483/13Y10T483/1745Y10T483/1767
    • In a machine tool with an automatic tool change function, a rotatable tool spindle carries a movable key engageable with a key-way formed on a tool. A tool changing arm, serving as a tool support device, friction-rotatably supports at least one tool for selectively inserting and removing same into and from the tool spindle. When a tool change operation is to be performed, rotation of the spindle is changed into a predetermined speed permitting key-engagement. A detecting device is provided for detecting movement of the movable key to confirm engagement of the movable key with the key-way of the tool. A clamp device clamps the tool inserted into the spindle in response to the detecting device. After the tool is clamped on the spindle, rotation of the spindle is changed into a machining speed. A confirming device is provided for confirming that the spindle is reached at a predetermined angular position during rotation thereof. The tool change arm is operated to remove the tool from the spindle in response to the confirming device.
    • 在具有自动换刀功能的机床中,可旋转的工具主轴承载可与形成在工具上的键槽相接合的可移动键。 一种用作工具支撑装置的换刀臂,摩擦可旋转地支撑至少一个刀具,用于将刀具选择性地插入和移出刀具主轴。 当要执行换刀操作时,主轴的旋转改变为允许键接合的预定速度。 提供一种检测装置,用于检测可移动键的移动,以确认可移动键与工具的键位置的接合。 夹紧装置响应于检测装置夹紧插入主轴的工具。 刀具夹紧在主轴上后,主轴的转动变为加工速度。 提供了一种确认装置,用于确认主轴在旋转期间到达预定角度位置。 响应于确认装置,操作工具更换臂以从主轴移除工具。
    • 4. 发明授权
    • Spindle head for a machine tool
    • 主轴头用于机床
    • US4586860A
    • 1986-05-06
    • US529630
    • 1983-09-06
    • Fumihiko OhkoshiToshifumi HasegawaNorikazu Kanii
    • Fumihiko OhkoshiToshifumi HasegawaNorikazu Kanii
    • B23Q3/12B23B19/02B23B31/117B23B31/26B23B31/04B23C5/26
    • B23B31/263B23B2231/50Y10T408/95Y10T409/309464
    • A spindle head for a machine tool rotatably carries a tool spindle, which is drivingly connected with an output shaft of a drive motor provided in axial alignment therewith. A drawing bar received in an axial through hole of the tool spindle is urged by means of springs for clamping on the tool spindle a tool being inserted into a front tapered bore of the tool spindle. In order to move the drawing bar against the springs and thereby to unclamp the tool from the tool spindle, an annular cylinder device is provided around the tool spindle. This cylinder device, when supplied with pressurized fluid, moves first and second operating members toward and away from each other in the axial direction of the tool spindle. The first operating member is abuttable with a first abutting member fixed on the tool spindle, while the second operating member is abuttable with a second abutting member, which is secured to the drawing bar, with opposite end portions thereof extending externally of the tool spindle through elongate holes formed in the tool spindle. Accordingly, movement of the first and second operating members toward each other causes the second abutting member and the drawing bar to move against the springs without applying substantial thrust force to the tool spindle.
    • 用于机床的主轴头可旋转地承载工具主轴,该工具主轴与驱动电动机的输出轴驱动连接,该驱动电动机的轴向对准。 接收在工具主轴的轴向通孔中的拉杆通过用于夹紧在工具主轴上的弹簧来推动,该工具被插入到工具主轴的前锥形孔中。 为了将拉杆移动到弹簧上,从而使工具从工具主轴松开,环形气缸装置设置在工具主轴周围。 该气缸装置在被供给加压流体时沿第一和第二操作构件在工具主轴的轴向方向上彼此移动和远离。 所述第一操作构件与固定在所述工具主轴上的第一抵接构件抵靠,而所述第二操作构件可抵靠第二抵接构件,所述第二抵接构件固定在所述拉杆上,其相对端部从所述工具主轴的外部延伸穿过 在工具主轴上形成的细长孔。 因此,第一和第二操作构件相对于彼此的移动使得第二抵接构件和拉伸杆抵靠弹簧移动,而不对工具主轴施加实质的推力。