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对于黄铜(H 62)、紫铜或铝的轴套和杯形零件,采用摩擦挤压成孔的加工工艺,是一项行之有效的好办法,既节约了原材料,又缩短了工时,其具体情况如下; 一、加工工艺过程挤压工具的几何形状,如图1所示。把刀柄插入车床尾座的锥孔内,金属棒料夹在车床的夹盘上,高速转动。首先使刀具与棒料的端面接触,依靠刀具和工件(图2)的摩擦所产生的热量使工件软化,然后让刀具轴向送进,把工件挤压成需要的孔形。最后再把工件的内
For brass (H 62), copper or aluminum bushings and cup-shaped parts, the process of friction extrusion into holes is an effective way to save both raw materials and hours, Specific circumstances are as follows; First, the processing technology extrusion tool geometry, as shown in Figure 1. The handle into the taper hole lathe tailstock, metal bar clip in the lathe chuck, high-speed rotation. First, the tool is brought into contact with the end face of the bar stock. The workpiece is softened by the heat generated by the friction between the tool and the workpiece (Figure 2). The tool is then fed axially to squeeze the workpiece into the desired hole shape. Finally, the workpiece inside