Based on the conditions of processing facilities in enterprise, the compound dies of cutting edge and punching round holes for the tractor frame is developed.
根据企业加工设备条件，研制了拖拉机车架切边冲孔复合模具。
On the basis of technology analysis for the U shape pierced side holes, this paper introduced the struture of compound dies for U shape stamped and pressed-word.
通过对U形件侧面冲孔工艺的分析，介绍了U形件冲孔、压字复合模结构。
Based on the conditions of processing facilities in enterprises, the thesis develops the compound dies of cutting edge and punching round holes of the tractor frame.
针对企业加工设备条件的限制研制了拖拉机机架切边冲孔复合模具。
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