复合金属板的传统方法是焊接、铆接、插桩、螺栓连接、翻边、胶结或以金属板专用螺钉相结合。美国最近采用冲压方法来复合金属板,其优点是操作简便、提高生产率、改进质量及降低成本。工作原理如图所示。冲床把漏斗形紧固件压向待复合的两块金属板(见图a)。在压模的精压环的作用下,紧固件在冲孔处沿复合板的总厚度取代了该孔中原有的金属,并且排出废料(图b)。各处 The traditional method of composite sheet metal is welding, riveting, instrumentation, bolt connection, flange, cemented or special combination of metal plate screws. The United States recently used stamping method to composite sheet metal, which has the advantage of easy operation, improve productivity, improve quality and reduce costs. The working principle as shown. Punch the funnel-shaped fastener pressed against the two metal plates to be combined (see Figure a). Under the action of the stamper, the fastener replaces the original metal in the hole along the total thickness of the composite plate at the punch hole and discharges the scrap (Figure b). throughout