锻压技术

计入系统弹性的压力机冲压曲线修正模型研究

英文标题：Research on revising stamping curve model of press under taking into system elasticity

作者：金旭星

单位：无锡职业技术学院

分类号：TH113

出版年,卷(期):页码：2013,38(2):94-97

摘要：

压力机的冲压曲线特征是影响冲压件成品质量的核心因素，常规的冲压曲线设计方法仅局限于刚性系统，忽略了系统弹性的影响，与实际状况存在偏差。将电机的机械特性及各构件的弹性因素考虑在内，建立压力机系统的动力学模型，并采用四阶龙格库塔法求解非线性动力学微分方程，获取滑块的冲压曲线模型。最后以算例分析和比较了所获模型与常规设计的差异。结果表明，压力机系统的惯量和弹性变形对公称压力区的冲压曲线影响较大。

The stamping curve characteristics of press is the core factor that affects the quality of the finished stampings. As the traditional design method for stamping curve is limited to a rigid system, which ignoring the elasticity of the system, there is a deviation with the actual situation. Firstly, the mechanical characteristics of the motor and the elasticity of its components were taken into consideration, so the dynamics model of press system was established. Then the nonlinear dynamics differential equation was solved by fourthorder RungeKutta method, and the slider curve model of stamping was obtained. Finally, a numerical example was introduced and the differences between the obtained model and the conventional design were compared. The results show that the system inertia and elastic deformation have a great impact on the nominal pressure zone of stamping curve.

基金项目：

江苏省首批高校优秀中青年骨干教师和校长境外研修资助项目（JSE20110930）

参考文献：

［1］ Li W, Du R. Dynamic modeling with kinetostatic method and experiment validation of a novel controllable mechanical metal forming press [J]. International Journal of Manufacturing Research, 2011,1(3):354-378.

［2］He K. A simple parameter calibration method for a novel controllable mechanical metal forming press[J]. Materials Science Forum, 2010,(50):943-948.

［3］程若飞,吕俊芳.角速度波动检测技术研究[J]. 航空计测技术, 2006,(5):67-71.

［4］叶兴德.数值分析[M]. 杭州：浙江大学出版社, 2008.

［5］张策.机械动力学[M]. 北京：高等教育出版社, 2008.

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