论文部分内容阅读
现在在机械加工中对加工精度的要求越来越高,所以希望提高机床的刚性。即由于引入了数控或计算机控制,机床的制造费用也显著增加,如何更快地,高效率地设计出能满足所要求加工精度的机床,现在已成为这个领域中的课题。因此必须首先研究在机械加工中的加工精度低下的原因。加工精度是由刀具和工件的相对位置,即根据刀具以及包括工件的机床结构的变形而决定的。机床结构的变形包括:由于切削力的静态的因素而引起的静态变形,以及由它的变动因素而引起的动态变形,加工时产生的热和由于
Now machining requirements for machining accuracy is getting higher and higher, so I hope to improve the rigidity of the machine. That is, the introduction of numerical control or computer control, machine tool manufacturing costs also increased significantly, how to design more quickly and efficiently to meet the required machining accuracy of the machine, has now become the subject of this field. Therefore, we must first study the reasons for the low machining accuracy in machining. Machining accuracy is determined by the relative position of the tool and the workpiece, ie, the deformation of the tool and the structure of the machine including the workpiece. Deformation of the machine tool structure includes: static deformation due to the static factor of the cutting force, as well as the dynamic deformation caused by its variation factors, heat generated during processing and due to