Wang Chengxin, Xiong Wentao, Ding Guo, Li Pengchao, Zhu Zhixiang, Liu Haibo
Key Laboratory for Precision and Non-Traditional Machining Technology of Ministry of Education, Dalian University of Technology, Dalian 116024, China.
Measuring and Testing Institute under Xi'an Aerospace Corporation, Xi'an 710100, China.
Materials (Basel). 2022 Aug 12;15(16):5546. doi: 10.3390/ma15165546.
In metal processing, exit burrs are usually inevitable, which is a huge challenge for high-precision manufacturing. This paper innovatively proposes an ice boundary constraint (IBC) method to actively suppress exit burrs to obtain better workpiece edge quality. Firstly, the formation mechanism of the exits burr is analyzed from the perspective of material flow at the edge of the workpiece, and the principle of the IBC method is explained. Secondly, a finite element model (FEM) is established to analyze the stress distribution and flow at the edge of the workpiece, so as to reveal the suppression mechanism of IBC on the exit burrs. Finally, the feasibility of IBC method and the validity of FEM are verified by the milling experiments. The experimental results show that the IBC method can reduce the exit burr height by 51.4% on average, and FEM can effectively predict the height of the exit burr. The IBC method proposed in this study can provide some reference and guidance for the active suppression of exit burrs in industry.
在金属加工过程中，出口毛刺通常是不可避免的，这对高精度制造来说是一个巨大的挑战。本文创新性地提出了一种冰边界约束（IBC）方法来主动抑制出口毛刺，以获得更好的工件边缘质量。首先，从工件边缘材料流动的角度分析了出口毛刺的形成机理，并解释了IBC方法的原理。其次，建立了有限元模型（FEM）来分析工件边缘的应力分布和流动情况，从而揭示IBC对出口毛刺的抑制机理。最后，通过铣削实验验证了IBC方法的可行性和FEM的有效性。实验结果表明，IBC方法平均可将出口毛刺高度降低51.4%，FEM能够有效预测出口毛刺的高度。本研究提出的IBC方法可为工业中主动抑制出口毛刺提供一定的参考和指导。
