某机车支架冲压模具设计
摘  要
冲压模具是冲压生产必不可少的工艺装备，是技术密集型产品。冲压件的质量、生产效率以及生产成本等，与模具设计和制造有直接关系。模具设计与制造技术水平的高低，是衡量一个国家产品制造水平高低的重要标志之一，在很大程度上决定着产品的质量、效益和新产品的开发能力。
本次设计对某机车支架进行冲压模具设计，对该零件进行冲压工艺分析和有关工艺计算，该冲压件的材料是Q235是普通碳素钢，具有较好的可冲压性能，确定合理的冲压工艺方案，设计冲压工序的四套模具，分别是落料模、冲孔模、L型弯曲模、U型弯曲模。模具设计的重难点在于工件的定位，凹凸模的配合以及卸料力，顶件力的计算，本次设计落料模，冲孔模均采用弹性卸料，自然落料。弯曲模采用弹簧卸料，顶件。合理的模具设计能够大大的提高生产效率，减小制造成本。
关键词：冲裁力；折弯；凹模；凸模。The Stamping Die Design of Locomotive stents

Abstract
Stamping mould is the indispensable stamping producing technology and equipment, is skill-intensive products. The mould design and manufacturing are directly related to Stamping quality, productivity and production costs, Mold design and manufacturing technology level, is the measure of a national product manufacturing horizontal discretion in one of the important marks , To a great extent resolve the quality of the products, benefit and new product development capabilities.
The design of  locomotive stent for stamping mould design, the parts stamping process analysis and relevant process calculation. The stamping material is ordinary carbon steel Q235,Has good can stamping performance. The determination of reasonable design of stamping process program, the four sets of mould pressing process, Respectively is blanking mold, punching die, L bending modulus, u-shaped bending dies. The difficulty lies in the mould design, also the positioning of convex mode with and unloading force, the top pieces force calculation, This design blanking modulus, punching mould adopts elastic unloading, natural blanking. Bending modulus use spring unloading, the top pieces. Rational mould design can greatly improve the production efficiency, reducing production cost.
KeyWords: cutting force; Bending; Concave die；Protruding models
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