螺杆压缩机转子齿廓磨削关键技术

发布时间：2018-04-12 22:13

本文选题：螺杆转子 + 成形砂轮　；参考：《厦门大学》2014年硕士论文

【摘要】：螺杆压缩机以其平稳的高速性能、多相混输性、排气量稳定及易于操作维护等优点,广泛应用于各工业领域。螺杆压缩机核心部件螺杆转子的制造过程中,由于转子形状复杂,螺旋面成形困难、制造精度不易保证等技术难题,使得其成形原理及精密制造技术的研究一直是行业发展的重要研究课题。随着计算机科学和机械工程学科的发展与日益紧密的结合,现代制造技术得到飞速发展,出现了大量专用的螺杆转子数控装备及配套辅助软件,但其核心技术仍由国外所掌握。虽然我国在转子制造领域得到了很大进步,但与世界领先技术相比仍然存在较大的差距,主要表现为加工效率低、精度不高且精度保持性较差。在此背景下,本论文围绕“螺杆压缩机转子齿廓磨削关键技术”这一课题,以实现精密、异形、复杂螺杆转子的高效、高精度磨削为目标,对以下几个方面做了较深入细致的研究： 1.基于螺旋面成形原理建立了转子螺旋面与成形砂轮的接触条件数学模型。在转子实际型线数值分析的基础上,引入了累加弦长参数三次样条曲线求解转子端面型线上各型值点的一阶导数,解决了型值点的大挠度问题。 2.求解了转子齿廓磨削用成形砂轮廓形数学模型,将数值分析方法应用于转子端面型线和成形砂轮轴向截形处理,通过二维和三维干涉检查方法评价与优化了成形砂轮廓形。 3.分析了转子齿廓铣削、磨削工艺和磨削产生的齿廓误差,提出了一种针对齿廓误差的专用补偿方法。通过实际加工验证了该补偿方法的可靠性,并将该误差补偿方法应用于转子原始型线的调整,修正了转子原始测量误差和部分设计缺陷,优化了部分转子型线和压缩机综合性能。 4.开发了一套螺杆压缩机转子磨削计算软件,进行了转子虚拟仿真加工与现场试验,验证了本文理论的正确性。
[Abstract]:Screw compressor is widely used in various industrial fields because of its stable high speed performance, multiphase mixing, stable exhaust and easy operation and maintenance.In the manufacturing process of screw rotor, the core component of screw compressor, the shape of the rotor is complex, the helical surface is difficult to be formed, the manufacturing precision is not easy to guarantee and so on.The research of its forming principle and precision manufacturing technology has been an important research topic in the development of the industry.With the development and close combination of computer science and mechanical engineering, modern manufacturing technology has been developed rapidly, and a large number of special screw rotor numerical control equipment and auxiliary software have appeared, but its core technology is still mastered by foreign countries.Although our country has made great progress in the field of rotor manufacturing, there is still a big gap compared with the leading technology in the world, which mainly shows that the machining efficiency is low, the precision is not high and the precision retention is poor.Under this background, this paper revolves around "the key technology of screw compressor rotor tooth profile grinding", with the goal of realizing high efficiency and high precision grinding of precision, special-shaped and complex screw rotor.The following aspects have been studied in detail:1.Based on the helical surface forming principle, a mathematical model of the contact condition between the rotor helical surface and the grinding wheel is established.On the basis of the numerical analysis of the actual profile of the rotor, a cubic spline curve with cumulative chord length parameters is introduced to solve the first order derivative of each type value point on the rotor end profile line, and the problem of large deflection of the type value point is solved.2.The mathematical model of the profile of the shaped grinding wheel for rotor tooth profile grinding is solved. The numerical analysis method is applied to the profile of the rotor end face and the axial section of the formed grinding wheel. The profile of the formed grinding wheel is evaluated and optimized by two dimensional and three dimensional interference inspection methods.3.The tooth profile error caused by rotor tooth profile milling, grinding technology and grinding is analyzed, and a special compensation method for tooth profile error is proposed.The reliability of the compensation method is verified by practical machining. The error compensation method is applied to the adjustment of the original profile of the rotor, and the original measuring error and some design defects of the rotor are corrected.The comprehensive performance of partial rotor profile and compressor is optimized.4.A set of calculation software for rotor grinding of screw compressor is developed. The virtual simulation and field test of rotor are carried out, and the correctness of this theory is verified.
【学位授予单位】：厦门大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TG580.6;TH45

【参考文献】