论文部分内容阅读
随着科学技术的发展,在科研生产中将会越来越多地遇到材料特殊和结构复杂的工件的加工问题,其中在狭长的金属管内隔板上打孔就是一例。在高能物理研究中,正负电子对撞机的真空盒,其基体是一个长约4米,截面近似于“日”字形的双腔无缝金属管(图1)。管的上腔中部断开,两端各长1.6米;管截面尺寸(横向×纵向),上腔为56×50毫米,下腔为56×120毫米;在两端1.6米范围内的
With the development of science and technology, more and more materials will be encountered in the production of materials with special and complex structure of the workpiece processing problems, including the narrow metal pipe baffle plate is an example. In high-energy physics research, the vacuum chamber of a positron-electron collider is based on a double-lumen seamless metal tube (Figure 1) with a length of about 4 meters and a cross-section similar to the “day” shape. The middle of the upper chamber of the tube was broken, and the length of each tube was 1.6 m at each end. The cross-sectional dimension of the tube (horizontal direction × lengthwise direction) was 56 × 50 mm on the upper chamber and 56 × 120 mm on the lower chamber.