轴承套温挤模具设计及数值模拟.docx

轴承套温挤模具设计及数值模拟摘 要挤压作为一种高效的精密加工技术近年来在现代工业中正发挥着越来越重要的作用。挤压可分为热挤压、冷挤压、温挤压三种。其中温挤压对无论热挤压还是冷挤压都有一定的优势。和冷挤压相比，它需要的压力小；和热挤压相比，它的氧化不严重。本设计即采用了温挤压技术并充分利用了这些优势。这次设计的内容是轴承套的温挤压。作为机械工业中常用的轴承套，要求有很高的力学性能，因此使用普通的低碳钢无法满足轴承套使用的需要，需要使用比较硬的中碳合金钢材料，因此本设计选择了40Cr，对于这样的材料只有使用温挤压才能很好的完成它的成型过程。本设计采用了复合挤压，模具均采用4Cr5MoSiV1材料制造。这是一种合金工具钢，具有很高的硬度，同时它还有很好的红硬性。这很好的满足了轴承套温挤压要求温度较高的需要。本课题完成了轴承套的温挤压的整套模具的设计，对温挤压模具的各个零件都进行了设计，并给出了详细的设计过程。本套模具采用了7级精度生产，生产出来的毛坯还需要进行机加工。这里还给出了每个零件的硬度和各种零件之间的配合公差以及形位公差以确保挤压出精度合格的工件。本设计是严格按照有关标准进行的合理科学的设计，并进行了科学的数值模拟，模拟结果显示，此次设计能够满足相关工件的成型要求。此外，本人还利用数次模拟结果对模具进行了一系列优化设计。关键词：轴承套，温挤压，模拟，模具设计Die Design and Numerical Simulation for Bearing Holder Warm Extrusion Process ABSTRACTExtrusion as a kind of efficient precision machining technology is playing an more and more important role in modern industry in recent years. Extrusion can be divided into hot extrusion, cold extrusion, warm extrusion. Warm extrusion has certain advantages to whether hot extrusion or cold extrusion. Compared with cold extrusion, it needs more pressure and compared with hot extrusion,it would be less oxidized. Warm extrusion technology is used in this design and so to make full use of its advantage. The design of the content is the Bearing Holder Holder′s warm extrusion. As the common part in mechanical industry, the Bearing Holder Holder′s mechanical properties should be very good, so use ordinary carbon steel cannot satisfy the need of Bearing Holder Holder.It need to use carbon steel materials, so this design choose 40Cr as the material which only use warm extrusion can dieing goodly.This design use a composite extrusion, the mould‵s material adopts 4Cr5MoSiV1. This is a kind of alloy steel, it has very high hardness, at the same time, it has very good red rigid. This is very good meets the requirements of high temperature which is needed in the bear‵s extrusion. This task has completed the design of the Bearing Holder Holder‵s die , and each part is be designed detailedly and each is given a detaile