刨槽机的结构设计及其有限元模拟分析

发布时间：2017-12-26 19:17

本文关键词：刨槽机的结构设计及其有限元模拟分析　出处：《天津理工大学》2016年硕士论文　论文类型：学位论文

【摘要】：随着金属板材加工工艺的优化与改进,金属薄板V型刨槽机的作用愈加重要。传统的金属薄板折弯工艺包括自由折弯、强制折弯和三点式折弯[2],这些折弯工艺使工件在折弯处折弯半径大,色差明显,这些方法已经不能满足设计人员和消费者对工件的质量要求。金属薄板进行折弯之前进行V型刨槽的工艺随之出现,有效的减小了金属板材的折弯半径和折弯处的色差[1]。为了更有效的对金属板材进行V型刨槽,需要设计出高效、稳定的刨槽机设备。本文主要介绍了对刨槽机结构的设计和优化过程,借助于计算机辅助设计软件,完成了对刨槽机整体结构的设计。根据刨槽机各部分的功能与作用,将刨槽机的结构设计分为底座结构、压板装置、上架结构和刀架结构四部分。利用可视化的三维设计软件分别完成各部分的结构设计,并根据受力情况选取适合的传动装置,结构设计过程中要充分考虑各部分结构的协调和配合。当完成各部分的结构设计后,利用有限元分析软件对刨槽机的结构进行静力学受力分析,根据结构的受力和变形程度,观察各部分是否满足强度和刚度要求,并对刨槽机的结构板材进行优化,使刨槽机既满足设计要求,又降低设备的生产制造成本。由于任何结构都具有各自的振动特性,当结构的固有频率和外部激励源的频率一致时,将使其发生共振,影响设备运行的稳定性和工件的加工精度。刨槽机设备对金属薄板进行V型刨槽过程中,如果上架发生振动将会严重影响工件的加工精度。因此通过对上架结构进行模态分析,计算出上架结构的固有频率,避免上架结构与变速电机产生的激振力频率相同,然后对上架结构进行优化,提高上架结构的固有频率,从而提高刨槽机设备运行的稳定性。
[Abstract]:With the improvement and optimization of sheet metal processing technology, more and more metal sheet V slot machine important profilers. The traditional metal sheet bending technology includes free bending, forced bending and three point bending [2]. These bending processes make the bending radius of the workpiece at the bending point large, and the color difference is obvious. These methods can no longer meet the quality requirements of designers and consumers. Process V sheet metal bending groove profilers before the appeared, effectively reduces the [1] bending radius and bending color of sheet metal. In order to more effectively carry out the V profilers slot on the metal plate, need gouging machine equipment to design efficient and stable. This paper mainly introduces the design and optimization of the structure of the planer. With the help of computer aided design software, the design of the whole structure of the planing machine is completed. According to the function and function of each part of the planer, the structure design of the planer is divided into four parts: the base structure, the press plate device, the upper frame structure and the tool frame structure. The visual 3D design software is used to complete the structural design of each part, and the suitable transmission device is selected according to the force condition. The coordination and coordination of each part should be fully considered in the process of structural design. When the completion of each part of the structure design, static stress analysis of structure of gouging machine using finite element analysis software, according to the structure stress and deformation degree of each part, observe whether meet the requirements of strength and rigidity, and the structure of plate gouging machine were optimized, the router can meet the design requirements, and reduce the production cost of equipment manufacturing. Because any structure has its own vibration characteristics, when the natural frequency of the structure is consistent with the frequency of the external excitation source, it will cause resonance, which will affect the stability of the operation of the equipment and the machining accuracy of the workpiece. Gouging machine for sheet metal V profilers groove in the process, if the shelves vibration will seriously affect the machining precision of the workpiece. So through the modal analysis of the upper structure, calculated on the natural frequency of the structure, avoiding the excitation frequency on the structure and variable speed motor have the same, then the shelves of structure optimization, improve on the natural frequency of the structure, so as to improve the stability of router equipment running.
【学位授予单位】：天津理工大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TG305

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