在切割的最大轴深度下进行薄壁削
1Department of Production Engineering, Lublin University of Technology, Nadbystrzycka 38D, 20-618 Lublin, Poland.
Materials (Basel, Switzerland)
|November 27, 2025
概括
研磨薄合金墙壁需要至少1.5毫米的厚度,以防止变形. 切割速度显著影响剩余应力和加工后扭曲,600米/分钟产生最高应变.
科学领域:
- 制造业 工程 制造工程
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
背景情况:
- 薄壁结构越来越多地用于航空航天和汽车工业.
- 加工薄壁面具有与尺寸精度和残余应力相关的挑战.
- 合金7050 T7451是一种常用于这些应用的高强度材料.
研究的目的:
- 为了确定最小的墙壁厚度,以最大限度的轴心切割深度进行削.
- 研究切割速度对残余应力和加工后扭曲的影响.
- 建立薄壁削参数的预测模型.
主要方法:
- 合金7050 T7451薄壁样品在最大轴切割深度下进行削.
- 响应表面方法 (RSM) 分析墙壁厚度和切割速度的影响.
- 使用坐标测量机 (CMM) 测量平度和墙壁厚度偏差的测量.
- 通过X射线衍光测量进行残余应力分析.
主要成果:
- 薄壁削是可行的,但墙壁厚度为1毫米,导致加工后显著的变形.
- 对于所使用的削条件,建议最小墙壁厚度为1.5mm.
- 切割速度约为600米/分钟,导致最大的应变和残余应力.
- 拉伸应力占主导地位,压力应力仅在特定厚度的300米/分钟观察到.
结论:
- 优化墙壁厚度和切割速度对于最小化薄壁削时的变形至关重要.
- 该研究为选择适当的墙壁厚度 (≥1.5毫米) 提供了指导方针,用于高深度削.
- 开发的RSM模型可以预测类似条件下的加工结果,帮助过程优化.
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