高效硬质合金转子成形铣刀的优化设计及其制造技术

发布时间：2018-01-06 10:02

本文关键词：高效硬质合金转子成形铣刀的优化设计及其制造技术　出处：《陕西理工学院》2015年硕士论文　论文类型：学位论文

【摘要】：目前,多数生产双螺杆压缩机的企业都采用成形铣刀对螺杆转子的螺旋槽进行铣削加工,这大大地提高了螺杆转子的加工效率与加工质量。但是,专用性太强的铣刀很难在加工零件发生变化时被及时地改造成相应的形状。因此,有必要提出一种通用性较强的高效的铣刀设计方法。本论文主要工作如下:1.首先对可转位成形铣刀的发展背景、趋势进行了简介和分析。然后,在研究圆柱螺旋曲面的成形原理以及螺旋槽成形刀具设计理论的基础上,以螺杆转子端截形为基础,建立了由工件端面型线到转子铣刀理论廓形的数学计算模型,使用MATLAB软件编程计算出铣刀理论廓形、规划了刀片槽基准坐标等数据,结合刀体的结构设计,实现了铣刀的三维建模。2.在已知铣刀廓形的情况下,对铣刀的设计提出了三方面的优化方法,并应用这些优化方法建立了铣刀模型;接着,对可转位刀片和前后两种方法所设计的铣刀进行了有限元分析,校核了刀片的强度并对两种铣刀刀体的分析云图进行了对比,验证了文中提出的优化设计方法具有可行性。3.对两种铣刀设计方法进行综合应用,针对性地设计出了某特定型号的阴、阳转子铣刀,并对铣刀开展了实际工况下的加工试验,对试验数据进行记录、分析,得到了铣刀加工合格转子的最优铣削深度范围,为后期铣刀以及转子的设计、加工提供可参考的资料。
[Abstract]:At present, most enterprises that produce twin-screw compressor use forming milling cutter to milling screw rotor spiral groove, which greatly improves the processing efficiency and quality of screw rotor. The milling cutter with too strong specificity is difficult to be transformed into the corresponding shape in time when the machining parts change. It is necessary to put forward a general and efficient design method of milling cutter. The main work of this paper is as follows: 1. Firstly, the development background and trend of indexable forming milling cutter are introduced and analyzed. On the basis of studying the forming principle of cylindrical helical curved surface and the design theory of helical groove forming tool, the end section of screw rotor is taken as the foundation. The mathematical calculation model from the end profile of the workpiece to the theoretical profile of the rotor milling cutter is established. The theoretical profile of the milling cutter is calculated by using MATLAB software, and the datum coordinates of the blade groove are planned. Combined with the structural design of the cutter, the 3D modeling of the milling cutter is realized. 2. When the profile of the milling cutter is known, three optimization methods are proposed for the design of the milling cutter, and the milling cutter model is established by using these optimization methods. Then, the finite element analysis of the indexable blade and the milling cutter designed by the two methods is carried out, the strength of the blade is checked and the analysis cloud diagram of the two kinds of milling cutter body is compared. The feasibility of the optimization design method proposed in this paper is verified. 3. Two milling cutter design methods are comprehensively applied to design a specific type of negative and positive rotor milling cutter. And the milling cutter under the actual working conditions of the processing test, to record the test data, analysis, the milling cutter processing qualified rotor optimal milling depth range, for the late milling cutter and rotor design. Processing provides reference materials.
【学位授予单位】：陕西理工学院
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TG714

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