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1. 发明授权

US3878654A Machine for severing rings from a coil 失效
标题翻译：用于从线圈切断环的机器
公开(公告)号：US3878654A
公开(公告)日：1975-04-22
申请号：US34130473
申请日：1973-03-14
申请人： CHICAGO METAL MFG CO
发明人： WENDT III WILLIAM H , KRIEPS GEORGE D
IPC分类号： B23D45/04 , B23D47/04 , B23D47/10 , B24B27/06 , B24B19/00 , B24B19/11
CPC分类号： B24B27/0608 , B23D45/046 , B23D47/04 , B23D47/10
摘要： A helical coil comprising a plurality of turns of bar stock is mounted on an expanding mandrel which is operated by a hydraulic cylinder or the like to expand the internal circumference of the coil against the resilient resistance thereof. A severing device is then employed to form a cut across the turns of the coil so as to sever each turn as a separate ring having a gap therein corresponding in width to the thickness of the severing device. The expanding mandrel is then released so as to allow the rings to spring back to their original circumference. In this way, the gap in each ring is closed. Each ring may then be flattened to remove the helical pitch so that the ring will be in a single plane with the severed ends of the ring aligned. The severed ends may be welded or otherwise joined. The disclosed machine preferably employs a rotary abrasive disc for forming the cut across the turns of the coil. The width of the cut corresponds to the thickness of the abrasive disc. The amount by which the coil is expanded preferably corresponds to the thickness of the abrasive disc so as to compensate for the width of the cut produced by the abrasive disc. The continuing abrasive action of the sides of the disc, as the cut progresses across the turns of the coil, prevents the disc from being pinched by the turns of the coil.
摘要翻译：包括多匝棒料的螺旋线圈安装在由液压缸等操作的膨胀心轴上，以使线圈的内圆周抵抗其弹性阻力膨胀。然后使用切断装置在线圈的匝上形成切口，以便切断每个匝作为单独的环，其中在其间具有间隙的宽度与切断装置的厚度相对应。然后释放膨胀的心轴，以便允许环弹回到其原始圆周。以这种方式，每个环的间隙都是封闭的。然后每个环可以被平坦化以去除螺旋节距，使得环将处于单个平面中，并且环的切断的端部对齐。切断的端部可以焊接或以其他方式连接。所公开的机器优选采用旋转研磨盘，用于跨越线圈的匝形成切割。切口的宽度对应于研磨盘的厚度。线圈膨胀的量优选地对应于研磨盘的厚度，以补偿由研磨盘产生的切口的宽度。随着切割进入线圈的转弯，盘的侧面持续的磨擦作用防止盘被线圈的匝夹住。

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