本文介绍了ZK - 400真空注型机的原理及功能，并重点介绍了通过控制步进电机的脉冲频率达到调节真空注型机搅拌速度的目的。

The paper introduces the principle of ZK400 Vacuum RT Machines; from control pulse frequency of step-motor to adjust mixes speed of Vacuum RT Machines.

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介绍了UG软件中的虚拟设计、虚拟装配、优化分析技术，并基于虚拟设计的思想，运用UG软件对真空注型机的门铰链进行虚拟建模、装配和优化分析。

And used UG software for the virtual design, assembling and optimal analysis of the vacuum casting machine door gemel, based on virtual design idea.

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