特种供送螺杆关键技术研究

发布时间：2018-04-20 07:40

本文选题：特种供送螺杆 + 变螺距螺旋线　；参考：《燕山大学》2015年硕士论文

【摘要】：在高速供送领域,采用螺杆供送在准确性、稳定性和灵活性方面表现出了巨大的优越性,使得供送螺杆成为高速供送线上不可或缺的关键部件,其性能的优劣关系到整条生产线的先进程度。由于该类螺杆结构非常复杂,目前,国内在各类供送螺杆特别是特种供送螺杆的设计和制造技术方面的研究尚不完善,设计制造的螺杆不能满足现代高速供送线的生产要求。因此对该类供送螺杆的设计和制造进行研究,具有重要的理论意义和工程价值。为进一步提高螺杆高速供送的稳定性,本文提出一种新的变加速度运动规律螺旋线模型,并在此基础上探讨了组合式螺旋线的构建方法。基于空间包络理论,面向特种供送螺杆,分析瓶/罐体几何形状及其任一供送时刻位姿,构建特种供送螺杆的螺旋槽面数学模型,提出针对特定瓶/罐体的供送螺杆螺旋槽面的精确理论表达式。基于CATIA二次开发技术开发出了特种供送螺杆的CAD建模专用程序,实现了螺杆从数学模型到三维模型的转化,通过理论模型与实际模型之间的误差分析,证明了该螺旋槽曲面数学模型构建的准确性。本文进一步探讨了特种螺杆的加工工艺,利用数控技术,实现了螺杆从三维虚拟模型到实物模型的精确转换。针对目前在特种供送螺杆的研究方面存在的问题,本文对变螺距螺旋线的形式、螺旋槽数学模型的构建、螺杆三维建模方法和制造技术进行了深入研究,实现了复杂螺旋曲面的精确构型,具有重要的学术研究意义和工程价值。
[Abstract]:In the field of high speed supply and delivery, the use of screw feed has shown great superiority in accuracy, stability and flexibility, which makes the feed screw become an indispensable key component on the high speed feed line. The quality of its performance relates to the advanced degree of the whole production line. Because the structure of this kind of screw is very complex, at present, the research on the design and manufacture technology of various kinds of screw, especially special screw, is not perfect, and the design and manufacture of the screw can not meet the production requirements of modern high-speed feed line. Therefore, it is of great theoretical significance and engineering value to study the design and manufacture of this kind of feed screw. In order to further improve the stability of high speed screw feeding, a new helical model of variable acceleration law is proposed, and the construction method of combined helix is discussed. Based on the theory of space envelope, the geometric shape of the bottle / tank and its position at any feeding time are analyzed for the special feed screw, and the mathematical model of the helical groove surface of the special feed screw is constructed. An exact theoretical expression for the helical groove surface of the feeding screw for a specific bottle / tank is presented. Based on the secondary development technology of CATIA, the special program of CAD modeling for special feed screw is developed. The transformation from mathematical model to three-dimensional model of screw is realized, and the error analysis between theoretical model and practical model is carried out. The accuracy of constructing the mathematical model of helical groove surface is proved. In this paper, the machining technology of special screw is discussed, and the precise transformation of screw from 3D virtual model to real model is realized by using numerical control technology. Aiming at the problems existing in the research of special screw supply and feeding, the form of variable pitch helix, the construction of mathematical model of spiral groove, the 3D modeling method and manufacturing technology of screw are studied in this paper. The precise configuration of complex helical surfaces is realized, which is of great academic significance and engineering value.
【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】：TH22;TH16

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