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基于3D打印的轮制造中的几何精度和尺寸精度:关于可互换性和成形精度的研究

Xiaofeng Wei¹, Siwei Zhang², Lingli Sun¹

¹Institute of Spacecraft Application System Engineering, China Academy of Space Technology, Beijing 100094, China.

|February 13, 2025

概括

沉积建模 (FDM) 部件,特别是轮,在经过优化参数的情况下显示出更高的精度. 较大的组件和减少的材料收缩可以提高工业应用的尺寸精度.

科学领域:

增材制造增材制造增材制造
材料科学材料科学材料科学
机械工程机械工程

背景情况:

沉积建模 (FDM) 是一种广泛使用的增材制造技术.
在FDM零件中实现高维精度和几何互换性仍然是一个挑战,特别是在轮等功能组件中.
了解工艺参数和材料特性对零件精度的影响对于工业采用至关重要.

研究的目的:

研究FDM制造部件的几何互换性和尺寸精度,特别关注轮.
为了优化关键的FDM过程参数 (层厚度,挤出速度,打印温度) 以提高准确性.
分析组件尺寸,异构性和残余应力对FDM零件精度的影响.

主要方法:

使用FDM制造基板和两个轮.
使用计量技术系统地评估几何和尺寸公差 (直度,圆度,表面粗度).
分析残余应力及其与尺寸偏差和组件尺寸的相关性.

主要成果:

较大的FDM组件与较小的组件相比,具有更高的维度精度.
大型轮和轮轮的偏差分别在 -0.045~0.060毫米和 -0.150~0.078毫米之间.
异型和热收缩显著影响精度,特别是在较小的特征,导致较高的应力度和偏差在较小的部分.

结论:

优化FDM工艺参数和减少材料收缩可以显著提高零件质量,并实现在±0.1mm的尺寸公差.
FDM显示了精密制造的潜力,研究结果为高需求的工业应用提供了洞察力.
建议对材料特性和工艺控制进行进一步的研究,以提高几何一致性和性能.

关键词:

通过3D打印打印3D打印.精确的成型精度化沉积物的建模.几何宽容度几何宽容度互换性互换性互换性

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