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1、哈尔滨理工大学学士学位论文I高速铣削模具加工策略研究与工艺设计摘要高速铣削模具（High Speed Milling Tooling） ，在现代模具生产中，随着对塑件的美观度及功能要求得越来越高，塑件内部结构设计得越来越复杂，模具的外形设计也日趋复杂，自由曲面所占比例不断增加，相应的模具结构也设计得越来越复杂。这些都对模具加工技术提出了更高要求，不仅应保证高的制造精度和表面质量，而且要追求加工表面的美观。随着对高速加工技术研究的不断深入，尤其在加工机床、数控系统、刀具系统、CAD/CAM软件等相关技术不断发展的推动下，高速加工技术已越来越多地应用于模具型腔的加工与制造中。本文对高速铣刀切削模具
2、进行了研究。首先从高速铣削的一般机理出发，研究了高速铣削的切削参数与切削力，曲面几何特性与刀具切削姿态，表面粗糙度，刀具磨损使用寿命的关系。对球头刀、立铣刀、面铣刀三种典型刀具的刀具铣削加工进行了描述，通过研究刀具与机床，加工表面的几何关系，确定了各种铣刀对模具高速切削过程影响。研究了三种典型刀具的切削姿态对加工过程的影响，根据研究结果对三种典型刀具进行了刀具运动轨迹优选，并对刀具典型模具铣刀切削运动轨迹选择。关键词 高速铣削；切削层参数；刀具切削姿态；切削运动轨迹选择哈尔滨理工大学学士学位论文IIHigh-speed milling mold processing strategy rese
3、arch and process design AbstractHigh Speed Milling Tooling (High Speed Milling Tooling), in the modern mold production, with the appearance of plastic parts and the functional requirements of a degree is getting higher and higher, the internal structure of plastic parts are designed to be more compl
4、ex, mold design are becoming increasingly complex, free-form surfaces increasing the proportion of the corresponding structure is also designed to mold more complex. These are mold processing technology put forward higher requirements, not only should ensure that the manufacture of high precision an
5、d surface quality, but also to the pursuit of the aesthetic surface. With high-speed processing technology studies continued to deepen, particularly in the processing machine tools, CNC tool systems, CAD / CAM software and related technology development under the impetus of high-speed machining tech
6、nology has been increasingly applied to mold cavity processing and manufacturing.In this paper, high-speed milling cutting tool were studied. First, from the general mechanism of high-speed milling, the study of high-speed milling cutting parameters and cutting force, surface geometry characteristic
7、s and cutting gesture, surface roughness, tool wear life relationship. On the ball head knife, cutter, noodle cutter, three typical milling cutter tool described, through research tool and machine tools, processing the surface geometry to determine a variety of milling process on the impact of high-
8、speed cutting tool. Studied three 哈尔滨理工大学学士学位论文IIItypical posture of the cutting tool machining process, according to results of the study carried out three typical tool trajectory optimization tool and cutting tool milling cutter mold typical trajectory selection.Key words High Speed Milling；Cuttin
9、g parameters; Cutting gesture; Cutting trajectory selection哈尔滨理工大学学士学位论文IV目录摘要 .IAbstract.II第 1 章 绪 论 .11.1 选 题目的及意义 .11.2 相关内容 国内外研 究状况 .11.3 本文研 究的主要内容 .3第 2 章 高速模具 铣刀切削层参数描述 .52.1 切削层参数 .52.1.1 切削层参数定义与描述 .52.1.2 面铣刀切削层参数 .52.1.3 立铣刀切削层参数 .62.1.4 球头刀切削层参数 .82.2 高速铣削切削力 .82.2.1 单位切削力 .82.2.2 主切削力 .92.2.3 切削层参数对切削力的影响.92.3 高速铣 削表面粗糙度影响因素 .92.3.1 切削速度对粗糙度的影响 .102.3.2 进给速度对粗糙度的影响 .102.3.3 切深对粗糙度的影响 .112.3.4 冷却方式对粗糙度的影响 .112.4 高速铣刀磨损与刀 具使用寿命 .122.5 本章小结 .13第 3 章 模具被加工曲面几何特性与刀具切削姿态 .143.1 被加工曲面的几何特性 .143.2 坐标系的 设定 .153.3 铣刀位置姿态的描述 .163.4 坐标转换 .
