超高强度钢内螺纹铣刀优化

Optimization of Internal Thread Milling Cutter for Ultra-high Strength Steel

随着超高硬度钢在航空航天产品上的广泛应用,零件的螺纹孔加工成为难点。目前采用螺纹铣刀铣削加工螺纹,但现有螺纹铣刀在加工中存在容易崩断、耐磨度较差和刀具费用高等缺点。为了提高刀具耐用度、降低加工风险和刀具费用,从而降低零件加工成本,通过分析现有螺纹铣刀在加工中存在的缺点,优化螺纹铣刀结构和材质,实现国产化定制。经过试验验证,改进后的螺纹铣刀较原有螺纹铣刀耐磨度提高100%,单个螺纹孔加工费用较原有加工费用降低80%。

With the wide application of ultra-high strength steel in aerospace products,it is difficult to machine threaded hole.At present,the thread milling tool is used in milling processing,it is easy to break off,abrasion resistance is poor and costs much.In order to improve the abrasion resistance,decrease the machining risk and machining tooling cost,realize the reduction of machining expense,the disadvantages of the existing thread milling tool in machining is analyzed,thread cutter structure and material is optimized,domestic custom tool is adopted.Through the experiment,contracted with original thread milling cutters,the improved thread cutter abrasion resistance is increased by 100%,a single threaded hole machining cost is reduced by 80%.