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概述在毛主席无产阶级革命路线指引下,在国内外一片大好形势鼓舞下,我国少无切削新工艺、新技术有了较大的发展。并在汽车、拖拉机、电气、仪器、仪表、轧钢、航空等农、轻、重工业方面开始广泛应用,取得了较好的效果。目前在提高模具寿命,提高模具精度,缩短模具制造周期等方面还是有困难的,尤其是对型腔模的加工更为困难。如18公分肋骨剪的黑色压
Overview Under the guidance of Chairman Mao’s proletarian revolutionary line and inspired by the excellent situation both at home and abroad, there has been a great development in our country’s cutting-edge new processes and new technologies. And in the automotive, tractors, electrical, instrumentation, instrumentation, rolling, aviation and other agricultural, light and heavy industries began to widely used, and achieved good results. At present, there are still some difficulties in improving mold life, improving mold precision and shortening the mold manufacturing cycle, etc., and in particular, it is more difficult to process cavity molds. Such as 18 cm rib shear black pressure