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首页> 外文期刊>International Journal of Computer Integrated Manufacturing >A new toolpath generation method with feed sensitive zones inspection based on inverse evaluation mechanism
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A new toolpath generation method with feed sensitive zones inspection based on inverse evaluation mechanism

机译：一种新的刀具路径生成方法，基于逆评估机制检查馈电区检测

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摘要

Toolpath generation is the crucial task of free-form surface machining, and the quality of toolpath affects the final machining precision and efficiency. In conventional method, machining efficiency is approximately evaluated by the length of toolpaths. However, due to the curvature of toolpath distributing irregularly, the axis drive has to accelerate or decelerate to avoid exceeding its limits. For this reason, interpolation situation would affect toolpath quality as well, which is not taken into consideration in the traditional toolpaths generation mechanism. This paper proposes a toolpath generation method to plan toolpath with time-optimal, which has bidirectional information flow between CAM system and CNC system. This architecture is called inverse evaluation mechanism. By this mechanism, an offline simulation interpolation module is integrated into the CNC system; with this module, the feed sensitive zones are inspected by CNC system and the surface is divided into normal zones and low-velocity zones. The low-velocity zones are transmitted to CAM system as the feedback information. This paper gives the whole architecture of inverse evaluation mechanism and the details of how it works. The proposed method is verified with simulation examples; the result shows that this method can automatically find the low-velocity zones and modify the toolpaths.
机译：刀具路径是自由形状表面加工的关键任务，刀具路径的质量会影响最终加工精度和效率。在常规方法中，通过刀具的长度大致评估加工效率。然而，由于刀具路径的曲率不规则地分配，轴驱动必须加速或减速以避免超过其限制。因此，插值情况也会影响刀具路径质量，这在传统的刀具路径生成机制中没有考虑到这一点。本文提出了一种刀具路径生成方法，用于使用时间最佳计划刀具路径，该刀具路径具有在CAM系统和CNC系统之间的双向信息流。该架构称为逆评估机制。通过这种机制，将离线仿真插值模块集成到CNC系统中;使用此模块，通过CNC系统检查馈电区域，并将表面分为普通区域和低速区域。低速区域作为反馈信息传输到CAM系统。本文给出了整个逆价机制的整体架构以及它如何运作的细节。通过模拟示例验证所提出的方法;结果表明，此方法可以自动查找低速区域并修改刀具路径。

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