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METHOD FOR MANUFACTURING A WORK RING OF AN INJECTOR FILTER, CAPABLE OF BLANKING AND DRAWING PARENT METAL OF A METAL PLATE USING A BLANKING PUNCH AND A DRAWING PUNCH
METHOD FOR MANUFACTURING A WORK RING OF AN INJECTOR FILTER, CAPABLE OF BLANKING AND DRAWING PARENT METAL OF A METAL PLATE USING A BLANKING PUNCH AND A DRAWING PUNCH
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机译：制造能够使用冲孔和拉孔冲裁和抽拉金属板的母体的注射过滤器工作环的方法
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摘要
PURPOSE: A method for manufacturing a work ring of an injector filter is provided to reduce a production cost through mass production of the small work ring included in an entrance of the injector filter by blanking and drawing a parent metal of a metal plate.;CONSTITUTION: A method for manufacturing a work ring of an injector filter comprises the following steps: blanking a plurality of circular plates on a parent metal of metal band; molding a body(12) by drawing the circular plate using a first drawing punch; forming a hole by blanking the bottom of a groove using the drawing punch which diameter is smaller than the diameter of inner circumference of the groove; forming a plurality of restrict protrusions(15) on the inner circumference of the body; making penetration protrusions(211,221) penetrate the body by descending a fourth and fifth drawing punches(210,220); and completing the work ring(10) by bending the upper end of the body and forming a second protrusion.;COPYRIGHT KIPO 2010
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