微型轴类零件倒角、开槽一体机的研制及仿真分析

发布时间：2017-12-26 17:28

本文关键词：微型轴类零件倒角、开槽一体机的研制及仿真分析　出处：《南昌大学》2016年硕士论文　论文类型：学位论文

【摘要】：目前,随着微型轴类零件的加工需求量增加,而普通机床加工微型轴类零件的倒角、开槽工艺效率很低,无法满足市场及加工需要。由于微型化机床具有节省空间、节省能源、易于重组、成本低等方面的优点,特别适合加工细长轴类的微小型零件。因此,本文对微型轴类零件加工过程中的倒角、开槽两道工序进行研究,旨在减少装夹次数以及提高生产效率并降低加工成本。以微型轴零件加工工艺特点为基础,实现微型轴类零件倒角、开槽功能一体机的研制。本文基于车床和铣床的工作原理,根据刀具的材料性能以及工件的加工工艺要求等情况,以外形尺寸小,缩短加工时间,和减少装夹次数为目标,对倒角、开槽功能一体机总体结构进行设计,并提出了其平面布局的方案。并根据使用要求对微型零件的倒角和开槽功能设计,包括刀具设计、刀具运动传动设计。通过设计计算、校核,选择功率、转矩、尺寸合适的电机以及合适的滚珠丝杠螺母副,完成对纵向进给系统与横向进给系统的设计。最后通过车刀和铣刀完成微型轴类零件倒角、开槽的加工。基于Solidworks软件建立微型轴类零件倒角、开槽功能一体机的三维模型,并通过ADAMS软件建立一体机虚拟样机模型,对一体机的工作情况进行运动学仿真分析,然后根据其运动线图看出一体机的运动变化规律。利用ANSYS Workbench建立倒角开槽一体机机架的有限元实体模型,然后对机架进行模态分析,得到前六阶振型图,便于对其动态性能进行分析、预测、评价和优化,避免机床在工作过程中发生共振。
[Abstract]:At present, with the increasing demand for machining of micro shaft parts, the chamfering and slotting process efficiency of ordinary machine tools for machining micro axis parts is very low, which can not meet the market and processing needs. Because miniaturization machine has the advantages of saving space, saving energy, easy to reorganize, and low cost, it is especially suitable for machining small parts of slender shaft. Therefore, this paper studies the two processes of chamfering and grooving in the machining process of micro shaft parts, aiming at reducing clamping times, improving production efficiency and reducing processing cost. On the basis of the processing technology of the miniature shaft parts, the development of the integral machine for the chamfering and slotting function of the miniature shaft parts is realized. In this paper, the working principle of lathe and milling machine based on the situation, according to the material properties of the tool and the workpiece machining process requirements, with small size, shorten the processing time, and reduce the clamping times as the goal, to design the overall structure and function of slotting machine chamfer, and puts forward the layout scheme. The chamfering and slotting functions of the miniature parts are designed according to the requirements of use, including the design of tool design and the drive drive of the tool. Through the design, calculation and verification, we choose power and torque, proper size motor and proper ball screw nut pairs to complete the design of longitudinal feed system and transverse feed system. Finally, the machining of the chamfering and slotting of the miniature shaft parts is completed by the lathe tool and the milling cutter. Solidworks software to create three-dimensional model of micro shaft parts chamfering, slotting machine based on function, and through the ADAMS software to establish the virtual prototype machine model, the working conditions of the machine is the kinematics simulation analysis, and then according to the motion line diagram that machine movement changes. The finite element solid model of the chamfering slotting machine frame is built by ANSYS Workbench. Then the modal analysis of the rack is carried out, and the first six order vibration pattern is obtained, which is easy to analyze, predict, evaluate and optimize its dynamic performance, and avoid the resonance of machine tool during its working process.
【学位授予单位】：南昌大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TG502

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