螺杆压缩机阴转子定轴横轧成形可行性研究

螺杆转子是螺杆压缩机的核心部件,具有螺距大、齿高半径大和螺旋升角大的特点,现有工艺为切削加工.提出一种将带有非对称螺旋齿形的螺杆阴转子直接轧制成形的新工艺,旨在实现螺杆转子的近净成形,大幅度提高其生产效率.采用有限元数值模拟和轧制试验相结合的方法对螺杆阴转子的定轴横轧成形进行了研究,得到的螺杆阴转子的非对称螺旋齿形分度均匀良好、齿形填充饱满、成形尺寸基本满足设计要求.研究结果表明,定轴横轧螺杆阴转子的工艺是可行的,具有一定的工业应用价值.

Feasibility Study on Screw Compressor Driven Rotor with Fixed Cross Rolling

As the core component of the screw compressor， driven rotor which has obvious advantages of big pitch， high tooth depth and large helical angle is manufactured by machining. A fixed cross rolling process aimed at the near-netshape forming of driven rotor with asymmetric spiral teeth at higher productivity is presented. By means of the finite element simulation and rolling experiment， the forming process of driven rotor by fixed cross rolling was carried out. That the formed asymmetric spiral teeth had a satisfied shape and uniform graduation， and elementally met the design requirements. It verifies the feasibility of the fixed cross rolling driven rotor and its application value for engineering.