汽车铝合金轮毂模具数控加工仿真优化研究

发布时间：2018-01-25 09:22

本文关键词： 轮毂 UG VERICUT　出处：《燕山大学》2015年硕士论文　论文类型：学位论文

【摘要】：轮毂是汽车的主要部件之一,承载着车辆的全部重量,随着人们对汽车安全性和外观款式的要求越来越高,传统的钢制轮毂逐渐被铝合金轮毂所替代。铝合金轮毂不仅在安全性上比刚制轮毂提高数倍,而且款式多样,满足了人们对外观个性化的需求。本文针对铝合金轮毂压铸模具曲面形状复杂、小批量、多品种的特点将数控加工和虚拟仿真加工等先进技术应用到了汽车铝合金轮毂模具制造中。汽车铝合金轮毂压铸模具加工是一个复杂的过程,本文结合UG NX和VERICUT软件对这一过程进行了研究。利用UG NX软件对汽车铝合金轮毂铸造模具进行参数化建模,并对铸造模具进行工艺分析,在保证零件各个部位加工精度的前提下,确定了铸造模具所使用的加工方法、装夹方式、加工刀具及机床等。根据汽车铝合金轮毂铸造模具的特征,使用UG NX软件的CAM模块对压铸模具各个部分采用不同的走刀方式并生成刀具路径,利用后处理模块生成了可被机床直接执行的G代码。在VERICUT软件中建立虚拟数控加工环境,进行虚拟数控机床进行建模和组装,并配备FANUC 0i的数控系统,建立虚拟加工中所使用的刀具库,并对每把刀具进行参数设置。将UG NX软件生成的NC代码导入到VERICUT软件中进行虚拟加工,首先利用软件中的AUTO-DIFF模块对加工过程中的各种碰撞、过切、欠切等情况进行分析和检验,保证实际加工中数控程序的准确性。然后利用软件中的Opti Path模块优化数控程序,减少加工时间、提高加工质量并降低刀具磨损。本文证明了利用UG NX和VERICUT软件相结合对汽车铝合金轮毂模具加工进行编程及虚拟加工是一种可行并有效的方法。通过对虚拟加工结果的检验及校正使得加工质量和加工效率相应提高,这大大增强了企业在市场上的竞争力。
[Abstract]:Wheel hub is one of the main parts of the automobile, carrying the total weight of the vehicle, with the increasing requirements for the safety and appearance of the car style. Traditional steel wheels are gradually replaced by aluminum alloy wheels. Aluminum alloy wheels not only improve the safety of rigid wheels several times, but also a variety of styles. In this paper, the die casting die surface of aluminum alloy hub complex shape, small batch. Many kinds of advanced technologies such as NC machining and virtual simulation machining are applied to the manufacture of automobile aluminum alloy wheel hub die casting die processing is a complex process. This paper studies this process with UG NX and VERICUT software. Using UG NX software, the parameterized modeling of the casting die of automobile aluminum alloy hub is carried out. On the premise of ensuring the machining accuracy of various parts of the parts, the machining methods and clamping methods used in the casting mould are determined. According to the characteristics of the casting die of automobile aluminum alloy wheel hub, the CAM module of UG NX software is used to use different cutting way and generate tool path for each part of die casting die. The G code which can be executed directly by the machine tool is generated by the post processing module. The virtual NC machining environment is established in the VERICUT software, and the virtual NC machine tool is modeled and assembled. And equipped with FANUC 0i numerical control system, set up the tool library used in virtual machining. The NC code generated by UG NX software is imported into VERICUT software for virtual machining. First, the AUTO-DIFF module in the software is used to analyze and test all kinds of collision, overcut, undercut and so on in the process of machining. Ensure the accuracy of NC program in actual machining. Then use the Opti Path module in the software to optimize the NC program and reduce the processing time. It is proved in this paper that using UG to improve machining quality and reduce tool wear. The combination of NX and VERICUT software is a feasible and effective method for programming and virtual machining of automobile aluminum alloy hub die. The processing efficiency is improved accordingly. This has greatly enhanced the competitiveness of enterprises in the market.
【学位授予单位】：燕山大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TG659

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