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首页> 外文期刊>Proceedings of the Institution of Mechanical Engineers, Part B. Journal of engineering manufacture >An iterative algorithm for optimal mould design in high-precision compression moulding
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An iterative algorithm for optimal mould design in high-precision compression moulding

机译：高精度压缩成型中优化模具设计的迭代算法

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摘要

The mould design for the manufacturing of high-precision glass parts remains a challenging task. This motivates the present study which proposes an optimization technique to identify the mould design that yields the desired glass piece profile at the end of the compression moulding process with an accuracy of the order of 1 μm. The intuitive, yet very efficient method consists in computing at each optimization loop the mismatch between the deformed and desired glass piece geometries and using this information to update the mould design. The deformed glass piece geometry is computed using the commercial finite element package ABAQUS. This package is well suited to model the multistage forming process, the complex rheology of the glass, and the varying mechanical contact between the parts involved. The feasibility of the method is demonstrated in theory by designing the required mould for a convex-concave lens, where an accuracy of the order of 1 μm is achieved.
机译：用于制造高精度玻璃零件的模具设计仍然是一项艰巨的任务。这激励了本研究，该研究提出了一种优化技术，以识别模具设计，该模具设计在压缩成型过程结束时以1μm的精度产生所需的玻璃件轮廓。直观但非常有效的方法包括在每个优化循环中计算变形的玻璃件和所需玻璃件的几何形状之间的不匹配，并使用此信息更新模具设计。使用商业有限元程序包ABAQUS计算变形的玻璃碎片的几何形状。该包装非常适合于建模多阶段成型过程，玻璃的复杂流变性以及所涉及零件之间变化的机械接触。通过设计凸凹透镜所需的模具，从理论上证明了该方法的可行性，该模具可实现1μm左右的精度。

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