用附加有该变螺距螺纹加工装置的普通车床，可以十分方便地加工出符合质量技术要求的变螺距螺纹螺杆。
The reformed lathe can machine the varying pitch screw bolt according to the require of quality and technology.
就设备的结构而言：喷嘴的截面积、螺杆与螺套的螺距、间隙、转速、螺套螺纹的深浅是影响膨化度的主要因素。
While for the equipment structure, they were the sectional area of nozzle, the pitch between screw and its turnbuckle, clearance, rotate speed, and the depth of the whorl on the turnbuckle.
本文介绍了一种变螺距螺杆的设计方法，该方法采用多项式，并提出了设计所需的边界条件和这种方法的使用范围。
This paper introduces a design method of variable pitch screw, This methed make use of multinomial, bring out the boundary conditions which the design need and the operating range of the methed.
文中分析了异型截面供送变螺距螺杆的结构特点和工作原理，设计了其加工工艺，提出了一套加工该螺杆的独特的数控编程方法。
The paper analyses the structural characteristic and work principle of screw with variable pitch, designed machining technics, put forward a particular method of nc programming.
在数控车床上加工大螺距螺杆有一定的技术难度，加工时不便观察且安全可控性差。
There is a certain of difficulties that the process of manufacture can not be observed easily and controlled safely when the big-lead screw in the CNC lathe.
螺杆每转一周，密封腔中的液体向前推进一个螺距。
Once the screw turns a circle, the liquid inside the sealing chamber will be pushed forward by a pitch.
螺杆每转一周，密封腔中的液体向前推进一个螺距。
Once the screw turns a circle, the liquid inside the sealing chamber will be pushed forward by a pitch.
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