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Process simulation for five-axis machining for generalised milling tools

机译:通用铣刀五轴加工的过程模拟

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摘要

In this study, a general numerical model for five-axis machining is proposed covering all possible tool geometries. The proposed process model predicts total cutting forces acting on the tool given the cutter profile geometry, process conditions and material specifications without preliminary cutting operations. Tool envelope is extracted from CAD data, and helical flutes points are represented in cylindrical coordinates. Equal parallel slicing method is utilised to find cutter engagement boundaries (CEB) determining cutting region of the tool surface for each axial level in the tool axis direction. For each level uncut chip thickness value is found and total forces are calculated by summing force values for each point along the cutting flutes. For arbitrary cases forces are simulated and obtained results are experimentally verified.
机译:在这项研究中,提出了涵盖所有可能的刀具几何形状的五轴加工通用数值模型。所提出的过程模型可以在不进行初步切削操作的情况下,根据刀具轮廓的几何形状,工艺条件和材料规格,预测作用在刀具上的总切削力。从CAD数据中提取工具包络线,并以圆柱坐标表示螺旋槽点。利用相等的平行切片方法来找到刀具接合边界(CEB),该刀具接合边界(CEB)确定了沿刀具轴线方向上的每个轴向水平的刀具表面的切削区域。对于每个级别,找到未切削的切屑厚度值,并通过将沿切削刃的每个点的力值相加得出总力。对于任意情况,都模拟了力,并通过实验验证了获得的结果。

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