Analysis and Modification on Characterization Parameter of Surface Scale-texture for Cold Roll-beating Forming Parts
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摘要: 为了有效的控制其对冷滚打成形件表面质量的影响,对鳞纹的表征参数进行研究。依据冷滚打成形的基本原理,分析了鳞纹产生的原因;对不同滚打方式下鳞纹高度和鳞纹间宽进行理论解析,获得了其与滚打轮公转速度和工件水平进给速度之间的关系表达式;由于理论解析过程中没有考虑应变速率、滚打轮自转等因素的影响,计算结果误差较大,应用ABAQUS软件进行冷滚打成形仿真,根据仿真结果对鳞纹高度的表达式进行修正,使其能够更加准确地反映出不同工艺状态下的鳞纹高度。在改装的实验设备上进行冷滚打成形实验,对工件表面产生的鳞纹进行测量,获得了鳞纹二维截面形状和鳞纹高度,与理论计算结果相互比较,验证了修正后鳞纹高度表达式的正确性,可为冷滚打成形技术中工件表面质量的控制和工艺参数的选择提供参考。Abstract: In order to control the surface quality of cold roll-beating forming part, the characterization parameters of scale-texture are studied in this paper. According to the basic principles of cold roll-beating forming, we analyze the main reasons of scale-texture flaws. The height and width of scale-texture is studied by theoretical analysis under the different ways of cold roll-beating and a relational expression for that, the revolution speed of the rolling wheel and the feeding horizontal speed of the workpiece. Because the effect of the strain rate, rolling wheel rotation and friction are not considered, the errors of calculation results are large, so expressions are complemented by the simulation results via ABAQUS software, so that it can more e accurately reflect the height scale-texture under technical state. The forming experiment is conducted on the refitted cold roll-beating forming equipment, the height of scale-texture and 2D section shape is obtained by scale-texture measurement on the surface of cold roll-beating forming parts, the validity of post-correction formula is verified by inter comparison of experimental results and 2D section shape, so as to provide reference for surface quality control and selection of parameters parameters.
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Key words:
- ABAQUS /
- cold roll-beating /
- rolling wheel /
- scale-texture
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