柔性制造技术在转向节加工中的研究及应用

发布时间：2018-05-11 05:01

本文选题：转向节 + 柔性制造技术　；参考：《江苏大学》2017年硕士论文

【摘要】：随着重卡需求的急剧扩张,重卡市场竞争日趋激烈,汽车个性化需求越来越高,关键零部件的制造水平、生产能力以及产品的快速更新换代成为企业竞争的关键因素。柔性制造技术成为汽车零部件制造业追求的理念,“快速”“集成”和“智能”的制造设备和系统成为企业的发展趋势。转向节作为汽车转向桥上的关键零件,随着市场多样化及其不可预知性,产品品种的增加及其比例不稳定,其差异性很大,这加大了生产安排的难度。有鉴于此,结合本职工作以及本公司投资计划,针对转向节的柔性化改进,开展了以下研究工作:基于转向节零件结构特点以及转向节典型加工流程的深入研究,引进基于柔性制造技术理念的集成加工、复合加工等新技术,对转向节加工工艺进行了柔性化和简约化处理,确定了新的工艺路线,制定了新的工艺流程和生产布局,以达到流程高效、优质、运行灵活的目的,实现了转向节加工工艺柔性化。基于数控设备的智能、集成、精确、高速、数字化等功能,研究集成加工、复合加工技术(车铣中心)在转向节加工中的应用,采用多因素回归正交试验法进行切削试验,建立了车铣中心动力铣削切削力的计算模型,用多因素法研究切削参数及刀片圆角对表面粗糙度的影响,建立了表面粗糙度的计算模型,并进行试验验证,从而实现了以车代磨使零件获得良好的加工质量,建立了以加工中心和车铣中心为主要加工设备的柔性制造生产线,实现了转向节加工设备的柔性化。基于新型刀具技术如复合刀具、成型刀具、刀具破损检测技术等高效、高精、高柔性的特点,研究了新刀具的应用及刀具管理,并实现了刀具的在线破损监测;为保证生产线的连续高效运转,研究了如何根据所加工的产品,通过简单更换夹具原件以实现零件多品种加工的方法,从而实现了刀具和夹具的柔性化。最后,对比分析转向节全新的加工工艺与传统工艺的特点。较之传统工艺,全新的加工工艺具有方案新颖,加工流程自动化程度高,产品质量稳定等特点,极大的提高了工程保证能力。
[Abstract]:With the rapid expansion of heavy truck demand, the competition of heavy truck market is becoming more and more fierce, and the demand for individuation of automobile is becoming higher and higher. The manufacturing level of key parts, the production capacity and the rapid upgrading of products become the key factors in the competition of enterprises. Flexible manufacturing technology has become the pursuit of automotive parts manufacturing, and rapid "integration" and "intelligent" manufacturing equipment and systems have become the development trend of enterprises. As the key part of the automobile steering axle, with the diversification of the market and its unpredictability, the increase of the product variety and its proportion is unstable, and its difference is very big, which increases the difficulty of production arrangement. In view of this, combined with our own work and our company's investment plan, we carried out the following research work: based on the structural characteristics of steering knuckle parts and the typical manufacturing process of steering knuckle, we carried out the following research work: By introducing new technologies such as integrated machining and composite machining based on the concept of flexible manufacturing technology, flexible and simplified processing of steering knots is carried out, a new process route is determined, and a new process flow and production layout are worked out. In order to achieve the purpose of high efficiency, high quality and flexible operation, the processing process of steering joint is flexible. Based on the functions of intelligence, integration, precision, high speed and digitization of numerical control equipment, the application of integrated machining and compound machining technology (turn-milling center) in steering joint machining is studied, and the cutting test is carried out by multi-factor regression orthogonal test method. The calculation model of cutting force in turn-milling center dynamic milling is established. The influence of cutting parameters and blade roundness on surface roughness is studied by multi-factor method, and the calculation model of surface roughness is established and verified by experiments. The flexible manufacturing line with machining center and turn-milling center as the main processing equipment is established, and the flexibility of steering joint processing equipment is realized. Based on the characteristics of high efficiency, high precision and high flexibility of new tool technology, such as compound tool, forming tool and tool breakage detection technology, the application and tool management of new tool are studied, and the on-line damage monitoring of tool is realized. In order to ensure the continuous and efficient operation of the production line, this paper studies how to simply change the original parts of the fixture to realize the multi-variety machining of the parts according to the processed products, thus realizing the flexibility of the cutting tools and fixtures. Finally, the characteristics of the new processing technology and the traditional technology of the knuckle are compared and analyzed. Compared with the traditional process, the new processing technology has the characteristics of novel scheme, high degree of automation, stable product quality and so on, which greatly improves the engineering guarantee ability.
【学位授予单位】：江苏大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TH165;U466

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