筒体与斜背板变尺寸焊接坡口的优化设计

A New Design for Size-variable Welding Groove between Cylinder and Inclined Back Plate

有一种承载焊接支架,焊接件主体结构是中间有带焊接底座的筒体,筒体一端焊有前端板与筒体垂直,筒体另一端焊有与筒体呈倾斜角度的背板,使用时焊接支架承受重载荷和扭矩。由于背板与筒体倾斜,与一般的坡口不同,此端筒体周边上K型坡口设计的钢板厚度两侧坡口开得尺寸不同,以补偿倾斜的背板导致筒体上坡口的减小。研究表明影响筒体K型坡口尺寸的一个参数是坡口处筒体板厚径向线与背板间的角度。作者通过借鉴原设计,应用空间解析几何公式计算得出的筒体板厚径向线与背板间的角度,重新优化设计了筒体上背板处的坡口,与原设计相比,重新设计的坡口更具合理性和准确性。

The structure of a bearing weldment support is introduced. The structure consists of a cylinder with welded chassis at the middle part. At one end of the cylinder there is front plate vertical to the cylinder and at the other end there is a back plate with an inclination angle to the cylinder. One of the parameters that affect the K - shape groove size is the angle between the cylinder plating thickness radius line and the back plate at the groove. In this study, by calculating the angle between the cylinder radius and rear plate with formula of space analytic geome- try, the author re -designed the groove at the back plate. The results show that the new groove is reasonable and accurate.