电子结构件连续成形角精度的研究

发布时间：2018-07-15 13:58

【摘要】：随着电子信息技术的发展,电子产品在生活中的使用越来越广。电子结构件是用来承载电子元件的,其结构的设计和使用要求越来越严格,对电子结构件角度精度的要求也越来越高。但国内外对连续成形角度精度的研究不多,因此,研究电子设备结构件连续成形因素对电子结构件成形角度精度的影响,对指导实际生产有重大的意义。本文选取了一个的电视机结构件,作为典型电子结构件,连续成形的影响因素对其角度精度的影响规律进行研究,其影响因素有材料性能、相对弯曲半径r/t值、折弯处圆角r值、制件折弯长度L和制件折弯处压痕槽等。本研究的影响参数是按实际工件来选择,材料选择了电子结构件常用的三种材料SECC、DC01、QSTE500TM用于研究。主要工作是:通过对三种材料性能的测试,计算出板料性能参数,为后面的模拟做好材料的准备;使用Autoform对制件进行连续成形角度精度分析;针对影响连续成形角度精度各因素设计了不同的模拟方案,通过模拟确定每种因素对角度精度的影响规律。研究得到如下结论:材料的屈服强度越小、材料的厚度增大、相对弯曲半径r/t减小、折弯长度L的增加,都会使连续成形角度精度增加。另外,在制件折弯处增加压痕槽能够明显的减小角度的回弹角,有明显的提高角度精度的作用。各角度精度影响因素对角度影响的大小顺序为:制件材料制件角度折弯处有压痕槽制件相对弯曲半径r/t值制件折弯处内圆角r值制件折弯处的折弯长度L。
[Abstract]:With the development of electronic information technology, electronic products are more and more widely used in life. Electronic structure is used to carry electronic components. The design and use of electronic structure are more and more strict, and the requirement of angle precision of electronic structure is becoming higher and higher. However, there are few researches on the angle accuracy of continuous forming at home and abroad. Therefore, it is of great significance to study the influence of the continuous forming factors on the forming angle accuracy of electronic structural parts in order to guide the actual production. In this paper, a television structure is selected as a typical electronic structure. The influence of continuous forming factors on its angle accuracy is studied. The influencing factors are material performance, relative bending radius r / t value. Bending angle r value, bending length L and indentation groove. The influence parameters of this study are selected according to the actual workpiece. Three kinds of materials, SECC-DC01QSTE500TM, which are commonly used in electronic structural parts, are selected for the study. The main work is as follows: through testing the properties of three kinds of materials, calculating the performance parameters of sheet metal, preparing the material for the simulation, using Autoform to analyze the angle accuracy of continuous forming; Different simulation schemes are designed for each factor affecting angle precision of continuous forming, and the influence law of each factor on angle precision is determined by simulation. It is concluded that the smaller the yield strength of the material, the greater the thickness of the material, the smaller the relative bending radius r / t, and the longer the bending length L, the higher the angle accuracy of continuous forming. In addition, increasing the indentation groove at the bending point can obviously reduce the angle springback angle, which can obviously improve the angle precision. The order of influencing factors of angle precision on angle is as follows: the relative bending radius of indentation groove is r / t, and the length of bending at the corner r value of the bending part is L _ (1). The order of the influence on the angle is as follows: (1) the bending length of the part with indentation groove relative to the bending radius (r / t) in the bending part.
【学位授予单位】：天津理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN03

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