摘要
缸孔是发动机燃烧室的心脏部件,引导活塞做往复直线运动。缸孔表面网纹的质量直接影响着发动机排放和使用性能。珩磨是加工缸孔内表面网纹的重要手段之一。表面网纹参数与进给速度、转速、砂条数量、越程量等息息相关。在其他条件均固定的前提下,研究越程量对网纹完整性的影响。结果表明:当越程量L0在一定范围时网纹具备完整性,当越程量L0=28.791时,多次冲程轨迹重复,缸孔表面存在未加工区域,网纹不完整。提出的计算方法可用于指导网纹质量调整。
Cylinder bore is the heart component of the engine combustor, and it guides the piston reciprocating linear motion. The quality of the cylinder bore surface mesh directly affects the engine emissions and performance. Honing is one of the im-portant means of machining cylinder bore surface mesh. Surface mesh parameters relate to the feed speed, the rotational speed, the number of honing sticks, the overruns and so on. In this paper, the influence of the overruns on the integrity of mesh is researched on the premise of other conditions are fixed. The results show that the mesh is with integrity when the over-runs L0 in a certain range;while when the overruns L0=28. 791, the stroking tracks repeat, and there is unprocessed area on cylinder bore surface, the mesh isn＆#39;t integrity. Calculation proposed in this paper can provide guidance to adjust the mesh quality.
出处
《机械研究与应用》
2015年第5期81-83,共3页
Mechanical Research & Application
