论文部分内容阅读
孔的无屑挤压加工是一种利用金属球形压刀、滚压工具等将另件已加工的孔进行辗平的一种新加工方法。由于在辗平过程中没有产生切屑,只是另件表面发生了塑性变形,因此一般称之为无屑加工法。当利用光洁度较高的滚压工具(压刀或滚轮)将工件内孔表面挤压时,由于金属产生了塑性变形,因此使另件内表面获得了较高的表面光洁度及优良的机械物理性能。孔的内表面经无屑滚压加工后,由于表面生成了一层新的硬化层,故而也大大提高了孔的耐磨性质及工件的耐疲强度。孔的无屑挤压加工由于只需利用简单的滚、压工具即可将另件内表面由原来的(?)_4～(?)_6提高到(?)_7～(?)_9,因此省去了费时的铰、磨工序,
Hole of the chip squeeze processing is a use of metal ball pressure knives, rolling tools, such as the other pieces of the hole has been processed a new processing method. As in the rolling process did not produce chips, but the other parts of the plastic deformation occurred, it is generally referred to as non-chip processing. When using a smooth finish with a rolling tool (pressure knife or roller) to squeeze the hole surface of the workpiece, due to plastic deformation of the metal, so that the other parts of the surface to obtain a higher surface finish and excellent mechanical and physical properties . After the inner surface of the hole is processed by the chipless rolling, the wear resistance of the hole and the wear resistance of the workpiece are greatly improved because of the new hardened layer formed on the surface. Holeless chip extrusion processing simply by rolling, pressing tools to the other parts of the inner surface from the original (?) _ 4 ~ (?) _ 6 to (?) _ 7 ~ (?) _ 9, the province To a time-consuming hinge, grinding process,