教学用五轴联动数控铣床原理样机设计与研究

发布时间：2018-10-23 09:32

【摘要】：五轴联动数控机床是科技含量高、精密度高、用于加工复杂曲面的机床，这种机床对国家的航空、航天、军事、科研、精密器械、高精医疗设备等行业，有着举足轻重的影响力。本课题研究教学用的五轴联动数控铣床原理样机。首先，，本文综合叙述了五轴联动数控机床的发展历史，分析了不同布局的五轴联动龙门铣床设计的优缺点，给出教学用五轴联动数控铣床原理样机的结构选择并给出布局方案。布局方案包括机床设备的布局设计、双转台进给系统的工作范围、坐标轴原点、铣削力和焊接工艺特性。其次，对教学用五轴联动数控铣床原理样机的布局设计进行了研究包括对五轴联动进给机构、主轴机构。计算执行机构的参数并对设备进行选型，利用Creo三维设计软件搭建了教学用五轴联动数控铣床原理样机的三维仿真模型。从可靠性的角度，分析了教学用五轴联动数控铣床原理样机的设计参数是否达到预期工作参数。然后，针对样机的三维模型，进行了装配工艺的设计与研究包括对双转台进给系统中电机、联轴器、编码器、轴承、润滑、密封设备等进行选型和模拟装配，模拟实际装配过程中出现的问题和解决方案。最后，利用Creo的仿真模块，对教学用五轴联动数控铣床原理样机的进给传动系统进行静力学、运动学仿真。分析了教学用五轴联动数控铣床原理样机在加工时的静动态性能的表现能力，验证了本设计的正确性使五轴联动数控铣床原理样机达到预期的加工精度要求。
[Abstract]:Five-axis linkage CNC machine tool is a machine tool with high scientific and technological content and high precision, which is used to process complex curved surfaces. This machine tool can be used in the aviation, aerospace, military, scientific research, precision instruments, high-precision medical equipment and other industries of the country. Have a decisive influence. This paper studies the principle prototype of five-axis linkage NC milling machine used in teaching. Firstly, this paper describes the development history of five-axis linkage CNC machine tool, analyzes the advantages and disadvantages of the design of five-axis linkage gantry milling machine with different layout, and gives the structure selection and layout scheme of the principle prototype of five-axis linkage CNC milling machine for teaching. The layout scheme includes the layout design of the machine tool equipment, the working range of the double turntable feed system, the origin of the coordinate axis, the milling force and the welding process characteristics. Secondly, the layout design of the principle prototype of five-axis linkage NC milling machine for teaching is studied, including the five-axis linkage feed mechanism and spindle mechanism. The parameters of the actuator are calculated and the equipment is selected. The 3D simulation model of the principle prototype of the five-axis linkage NC milling machine for teaching is built by using Creo three-dimensional design software. From the point of view of reliability, this paper analyzes whether the design parameters of the principle prototype of five-axis linkage NC milling machine used in teaching reach the expected working parameters. Then, according to the 3D model of the prototype, the design and research of assembly process include the selection and simulation assembly of the motor, coupling, encoder, bearing, lubrication, sealing equipment, etc. Simulate the problems and solutions in the actual assembly process. Finally, using the simulation module of Creo, the statics and kinematics simulation of the feed transmission system of the principle prototype of five-axis linkage NC milling machine for teaching is carried out. The performance of static and dynamic performance of the principle prototype of five-axis linkage NC milling machine for teaching is analyzed, and the correctness of the design is verified, which makes the principle prototype of five-axis linkage NC milling machine meet the expected machining accuracy requirements.
【学位授予单位】：东华大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TG659

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