工艺系统受力变形对加工误差的影响(1)工艺系统受力变形对加工精度的影响

Influence of process system stress deformation on processing error <br>(1) Process system force deformation impact on machining accuracy <br>1) Change of process system force point will cause shape error, as in the above case. However, the process system varies with the position of the force point, and its deformation is also different. Specific problems should be analyzed. <br>2) When machining blank parts with irregular shapes, due to the different cutting amounts in the same process, the cutting force between the tool and the workpiece is different, so that the deformation of the workpiece or the process system is also different, resulting in the process system and the blank The corresponding deformation of the shape change is called "error double reflection". <br>(2) Measures to <br>reduce the mechanical deformation of the process system To reduce the mechanical deformation of the process system is one of the main ways to ensure product quality and improve production efficiency in mechanical processing. According to the actual production situation, measures can be taken to improve contact stiffness, workpiece stiffness, and machine tool part stiffness.

工艺系统受力变形对加工误差的影响<br>(1)工艺系统受力变形对加工精度的影响<br>1）工艺系统受力点变化会引起形状误差，如上述案例。但工艺系统随受 力点位置变化不同，其变形也不同，具体问题应具体分析。<br>2）加工毛坯形状不规则的零件时，由于在同道工序中的切削量不同，而使刀具与工件之间的切削力不同，从而使工件或工艺系统变形量也不同，导致工艺系统产生与毛坯形状变化相应的变形，这种现象称为“误差复映”。<br> (2)减少工艺系统受力变形的措施<br>减少工艺系统的受力变形，是机械加工中保证产品质量和提高生产效率的主要途径之一。根据生产的实际情况，可采取提高接触刚度、工件刚度、机床部件刚度几方面的措施。

Influence of process system deformation on machining error<br>(1) Influence of process system deformation on machining accuracy<br>1) The shape error will be caused by the change of the stress point of the process system, such as the above case. However, the deformation of the process system varies with the change of the position of the stress point, so the specific problems should be analyzed.<br>2) When machining parts with irregular blank shape, due to the different cutting amount in the same process, the cutting force between the tool and the workpiece is different, so that the deformation amount of the workpiece or the process system is also different, resulting in the deformation of the process system corresponding to the change of blank shape. This phenomenon is called "error reflection".<br>(2) Measures to reduce stress and deformation of process system<br>Reducing the stress and deformation of the process system is one of the main ways to ensure product quality and improve production efficiency in machining. According to the actual production situation, measures can be taken to improve the contact stiffness, workpiece stiffness and machine tool component stiffness.<br>