旋风铣削理论及在双螺杆泵螺杆加工中的应用

发布时间：2018-04-13 13:15

本文选题：双螺杆泵 + 型线　；参考：《南京林业大学》2011年硕士论文

【摘要】：螺杆泵是一种新兴的工业用泵。螺杆泵的型式有很多种,适合不同的用途。2G-A型双螺杆泵是一种非完全密封型的螺杆泵,可以用来输送含有杂质的介质,稳定性和可靠性都比较高。因此,应用比较广泛。螺杆泵是依靠相互啮合的螺杆形成的密封腔输送介质的,所以螺杆的设计和加工就决定了螺杆泵的性能。本文针对2G-A型双螺杆泵进行研究,主要研究螺杆的型线设计和加工。螺杆的螺旋面是由螺杆端截面型线绕其轴线做螺旋运动形成的,对螺杆型线的研究是保证和提高螺杆泵工作性能的关键,也是设计螺杆加工刀具的基础。2G-A型螺杆泵螺杆的端面型线比较复杂,根据螺杆截面型线的形成原理,运用齿轮啮合理论,推导了螺杆端面型线的方程和啮合线方程,并用MATLAB GUI工具箱设计了螺杆截面型线的计算窗口,可以针对不同设计参数的螺杆计算螺杆端截面、轴截面和法截面曲线的坐标,并生成坐标点数据文件。目前,普遍采用的螺杆加工的方法主要是成型铣削法,用专用螺杆铣床加工,包括开槽、粗加工、半精加工和精加工,生产效率低。本文提出采用内旋风铣削加工螺杆的方法。首先分析了内旋风铣削加工的原理,建立了内旋风加工的数学模型,并推导了内旋风铣削刀具刃形的计算方法；根据A型螺杆的截面曲线方程,推导了刀具与工件的接触线方程,采用MATLAB编程计算了刃形的坐标点。在SolidWorks中,根据选择的刀具参数和刀具刃形的坐标点进行了刀具的三维建模。对SolidWorks进行二次开发,设计了A型螺杆的参数化建模系统；根据内旋风铣削的原理,编程仿真铣刀加工螺杆的过程,最后得到螺杆的螺旋曲面；截取加工后横截面型线,与理论设计的型线比较；在改装的普通车床上进行了内旋风铣削加工实验。结果表明,在现有条件下,用内旋风铣削能够简化螺杆生产工序,并达到螺杆半精加工要求,且大大提高生产效率。在实际应用中,可以通过对内旋风铣削头进行改进,直至设计内旋风铣削专用机床,可一次性实现螺杆精加工。
[Abstract]:Screw pump is a new type of industrial pumps. There are many types of screw pumps, suitable for different uses of.2G-A type double screw pump is a non fully sealed type of screw pump, can be used to transport medium containing impurities, stability and reliability are high. Therefore, the application is more extensive. The screw pump screw rely on the mutual engagement of the formation of the transmission medium sealed cavity, so the design and manufacture of screw determines the performance of screw pump. The 2G-A type double screw pump was studied. The main research line type screw design and processing.
The helical screw rod by screw end section line around the axis of spiral movement form, the research on screw type line is key to ensure and improve the performance of screw pump work, end line based.2G-A screw pump screw screw machining tool design is more complex, according to the principle of forming the cross section of the screw type line the use of gear meshing theory, derived the screw end face profile equation and meshing line equation, and the design of the cross section of the screw type line calculation window using MATLAB GUI toolbox, the screw can be according to different design parameters calculation of the screw end section, axis section and section curves, and generate the coordinate data file.
At present, the widely used method of machining screw mainly forming milling method, with special screw milling machine, including slotting, roughing, semi finishing and finishing, the production efficiency is low. The method proposed in this paper by internal whirlwind milling screw. This paper analyzes the principle of inner whirlwind milling processing, mathematical model is established in the cyclone process, and the calculation method of inner whirlwind milling cutter profile is derived; according to the section curve equation of A type screw, contact wire cutter and workpiece was deduced, using MATLAB programming blade coordinates were calculated. In SolidWorks, according to the tool parameters and the tool profile and choose the coordinates of the point the 3D modeling tool.
Two development of SolidWorks, designed the system of parametric modeling of screw type A; according to the principle of internal whirlwind milling, milling process simulation of the screw, and finally get the screw; interception after processing the cross-section line, compared with the profile theory of design; internal whirlwind milling experiments were carried out in ordinary lathe modification. The results show that, under the existing conditions, with whirlwind milling can simplify the production process and achieve the screw, screw semi finishing requirements, and greatly improve the production efficiency. In practical application, can through the inner cyclone milling head is improved, until the design of inner whirlwind milling machine, can achieve screw machining.

【学位授予单位】：南京林业大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TG54;TH327

【参考文献】