车刀TPU保护套的正逆向混合设计与增材制造
王琛1，贡森2，张晨赟1，丁可青1，夏凌然1
1.南京林业大学家居与工业设计学院，南京 210037； 2.南京双庚电子科技有限公司，南京 210037
Forward and Reverse Hybrid Design and Additive Manufacturing of TPU Protective Sleeves for Turning Tools
Wang Chen1, Gong Sen2, Zhang Chenyun1, Ding Keqing1, Xia Lingran1
1.College of Home and Industrial,Nanjing Forestry University,Nanjing 210037,China; 2.Nanjing Shuanggeng Electronic Technology Co., Ltd.,Nanjing 210037,China
摘要：正逆向混合设计 、增材制造技术分别是开发 、制造产品原型的快捷方式。以 PROXXON 精密车床用 1HSS/Co55 型车刀保护套为设计对象，采用热塑性聚氨酯(TPU)柔性材料，通过逆向设计到正向设计再到增材制造的产品开发流程，设计并制造出既贴合车刀曲面外形、又具有良好缓冲防护性能的车刀 TPU 保护套 。结果表明，经点云处理后，车刀扫描点的数量减少了 58%，达到了明显精简的效果 ；经面片处理后，车刀三角面片的数量减少了 45%，达到了明显光顺的效果；车刀逆向重构模型的误差范围为±0.2 mm，相对于实物原型的拟合度较高；碰撞仿真分析结果显示，安装有保护套的车刀比没有安装保护套的车刀的最大应力值下降了 98.46%，说明车刀 TPU 保护套具有良好的缓冲防护性能 。基于正逆向混合设计与增材制造技术的车刀 TPU 保护套有效保护了车刀的刀头结构 ，降低了储存 、搬运和取用的过程中车刀损坏的风险，同时避免了车刀对操作人员的碰触伤害，为同类定制保护套的快速开发提供参考。
Abstract：Forward and reverse hybrid design and additive manufacturing technology are shortcuts for developing and manu‐ facturing product prototypes, respectively. Taking the 1HSS/Co5 type turning tool protection sleeve used in PROXXON precision lathe as the design object, and adopting the product development process from reverse design to forward design and then to additive manufacturing, through thermoplastic polyurethane (TPU) flexible material, a turning tool TPU protective sleeve was designed and manufactured that not only fitted the curved surface shape of the turning tool, but also had good cushioning and protection performance. The results show that after point cloud processing, the number of scanning points for turning tools is reduced by 58%, achieving a significant simplification effect. After surface treatment, the number of triangular surfaces on the turning tool is reduced by 45%, achieving a significant smoothing effect. The error range of the reverse reconstruction model for turning tools is ±0.2 mm, which has a higher fitting degree compared to the physical prototype. The collision simulation analysis results show that the maximum stress value of turning tools with protective sleeves decreases by 98.46% compared to those without protective sleeves, indicating that the TPU protective sleeve for turning tools has good buffering and protection performance. The TPU protective sleeve for turning tools based on forward and reverse hybrid design and additive manufacturing technology effectively protects the blade structure of the turning tool, reduces the risk of damage to the turning tool during storage, handling and retrieval, and avoids contact injuries to operators by the turning tool. This provides a reference for the rapid development of similar customized protective sleeves.
关键词：车刀；热塑性聚氨酯保护套；正逆向设计；增材制造
Keywords：turning tool; thermoplastic polyurethane protective sleeve; forward and reverse design; additive manufacturing
基金：江苏省高校品牌专业建设工程项目(PPZY2015B150)
本文引用格式：
王琛，贡森，张晨赟，等.车刀TPU保护套的正逆向混合设计与增材制造[J].工程塑料应用，2023，51(10)：100-105，112.
Wang Chen，Gong Sen，Zhang Chenyun，et al. Forward and reverse hybrid design and additive manufacturing of TPU protective sleeves forturning tools[J]. Engineering Plastics Application，2023，51(10)：100-105，112.
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