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1. 发明授权

US4728761A Method and apparatus for hardening axially spaced cams on a camshaft 失效
标题翻译：用于在凸轮轴上固化轴向间隔开的凸轮的方法和装置
公开(公告)号：US4728761A
公开(公告)日：1988-03-01
申请号：US859348
申请日：1986-05-05
申请人： George M. Mucha , John R. Laughlin , William Z. Nelson , Robert C. Johnson
发明人： George M. Mucha , John R. Laughlin , William Z. Nelson , Robert C. Johnson
IPC分类号： C21D9/30 , H05B6/02 , H05B6/40 , H05B6/14
CPC分类号： C21D9/30
摘要： Method and apparatus for inductively heating and quench hardening axially spaced cams on a steel camshaft having a longitudinally extending rotational axis concentric with a plurality of axially spaced bearings, which method and apparatus utilizes an induction heating coil having an inner surface surrounding the rotational axis of the camshaft with an insulating gap and integral quench openings for directing quenching liquid inwardly from the heating coil for the workpiece, and a high frequency power supply for selectively energizing the heating coil with a power density within the heating coil of about 20KW/in.sup.2 and an auxiliary cooling assembly fixed with respect to the heating coil and including an arrangement for spraying a cooling liquid toward the camshaft. In accordance with the method and apparatus, a camshaft is indexed axially through the opening of the coil and cooling assembly to a first position with a cam within the coil, at which position the camshaft is indexed to have the lobe of the cam facing the gap in the induction heating coil and a hardening cycle is then employed including induction heating of the surface of the camshaft while the cam is stationary and then quench hardening by directing a quenching fluid through the induction heating coil toward the previously heated cam surface. After this heating cycle, the camshaft is then moved until the next cam is within the heating coil and the previously hardened cam is in the cooling assembly. Thereafter, another hardening cycle occurs. This process is repeated until all cams have been hardened.
摘要翻译：用于在具有与多个轴向隔开的轴承同心的纵向延伸的旋转轴线的钢凸轮轴上感应加热和淬火硬化轴向间隔凸轮的方法和装置，该方法和装置利用感应加热线圈，该感应加热线圈具有围绕具有绝缘间隙的凸轮轴和用于将淬火液体从用于工件的加热线圈向内引导的整体淬火开口，以及用于以加热线圈内的功率密度选择性地给加热线圈供电约20KW / in2的高频电源，以及辅助冷却组件相对于加热线圈固定并且包括用于朝向凸轮轴喷射冷却液体的装置。根据该方法和装置，凸轮轴通过线圈和冷却组件的开口轴向地被转位到具有在线圈内的凸轮的第一位置，凸轮轴在该位置处被分度，以使凸轮的凸角面向间隙然后在感应加热线圈中进行硬化循环，包括在凸轮静止时感应加热凸轮轴的表面，然后通过使淬火流体通过感应加热线圈朝向先前加热的凸轮表面进行淬火硬化。在该加热循环之后，凸轮轴被移动直到下一个凸轮在加热线圈内并且预先硬化的凸轮处于冷却组件中。此后，发生另一硬化循环。重复此过程直到所有凸轮都被硬化。

2. 发明授权

US4604510A Method and apparatus for heat treating camshafts 失效
标题翻译：用于热处理凸轮轴的方法和装置
公开(公告)号：US4604510A
公开(公告)日：1986-08-05
申请号：US736214
申请日：1985-05-20
申请人： John R. Laughlin , George M. Mucha
发明人： John R. Laughlin , George M. Mucha
IPC分类号： C21D9/30 , H05B6/02 , H05B6/40
CPC分类号： C21D9/30
摘要： A method and apparatus for heat treating camshafts includes a retractable shield positioned between a previously hardened surface and a surface being heat treated. During the induction heating and quenching cycle, a coolant is delivered to the hardened surface to maintain the temperature thereof below the tempering temperature. The shield prevents the coolant from contacting the unhardened surface and interfering with the heating and quenching thereof.
摘要翻译：用于热处理凸轮轴的方法和装置包括位于预先硬化的表面和被热处理的表面之间的可伸缩护罩。在感应加热和淬火循环期间，冷却剂被输送到硬化表面以将其温度保持在回火温度以下。防护罩防止冷却剂与未硬化表面接触并干扰其加热和淬火。

3. 发明授权

US4184798A Workpiece rotating and feeding apparatus 失效
标题翻译：工件旋转和送料装置
公开(公告)号：US4184798A
公开(公告)日：1980-01-22
申请号：US871329
申请日：1978-01-23
申请人： John R. Laughlin
发明人： John R. Laughlin
IPC分类号： C21D9/00 , H05B6/02 , B23Q5/22
CPC分类号： C21D9/0018
摘要： Apparatus is provided for simultaneously rotating and axially feeding an elongated workpiece past an induction heating inductor. The apparatus includes a collet having a passageway therethrough defined in part by radially displaceable fingers normally providing an opening of a diameter smaller than the smallest diameter of the workpiece. A workpiece is pushed through the collet and the collet is simultaneously rotated for the fingers to rotate the workpiece as the latter slides axially along the fingers.
摘要翻译：提供了用于同时旋转并轴向馈送细长工件经过感应加热电感器的装置。该装置包括夹头，其具有通过部分通过可径向移动的手指定义的通道，通常提供直径小于工件的最小直径的开口。工件被推动通过夹头，并且夹头同时旋转，以使手指随着手指沿着手指滑动而旋转工件。

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