A Study on the Influence of the Forming Strategy on the Main Strains, Thickness Reduction, and Forces in a Single Point Incremental Forming Process
A Study on the Influence of the Forming Strategy on the Main Strains, Thickness Reduction, and Forces in a Single Point Incremental Forming Process
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DOI：
10.1155/2013/382635
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发表时间：
2013-01-01
影响因子：
--
通讯作者：
Oleksik, Valentin
中科院分区：
文献类型：
--
作者：
Blaga, Adrian;Oleksik, Valentin
本文对复杂几何形状零件的渐进成形进行了实验研究。由于工艺的复杂性（存在三个方向上的力--坯料平面上的一个垂直方向和两个垂直方向），选择了一台三轴CNC铣床，该铣床能够描述冲头所覆盖的复杂路径，以获得截头圆锥形零件。为了获得截头圆锥，选择了三种不同的轨迹：在第一种和第二种变体中，在每次具有恒定步长的垂直冲压之后，冲头覆盖圆形路径。差异表明，下面的圆形轨迹可以从相同的点开始，也可以从前一个冲压点以90度角移动。在最后一种变型中，冲头执行空间螺旋轨迹。我们研究的主要目的是确定最佳的成形策略，通过改变冲头的压力位置和它所遵循的路径，通过单点渐进成形获得截头圆锥。因此，应变分布可以是均匀的，并且厚度减小和工艺力是最小的。
This paper comprises an experimental study for a complex geometry part obtained by incremental forming. Due to the process complexity (the presence of forces on three directions-a vertical one and two in the blank's plane), a three axes CNC milling machine, capable of describing the complex paths covered by the punch for obtaining the truncated cone-shaped parts, has been chosen. To obtain a truncated cone, three different trajectories were selected: in first and second variants after each vertical press having a constant step, the punch covers a circular path. The differences show that the following circular trajectory can start at the same point or can be shifted at an angle of 90 degrees from the previous press point. In the last variant, the punch performs a spatial spiral trajectory. The main objective of our study was to determine the optimal forming strategy, by shifting the press position of the punch and the path it follows to obtain a truncated cone through single point incremental forming. Thus, the strain distribution can be homogeneous, and the thickness reduction and the process forces are minimal.