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在汽车车架边梁的冲压钻孔过程中,为了保证其在冲压过程中不变形,通常在冲压成形之后再增加钻孔模。由于车架纵梁尺寸较长回弹量大,钻孔后偏差大,总成焊接后偏差更大。同时,这种方法既增加了冲压模具的开发费用,提高了产品制造成本,也增加了制造过程的流转工序。本文主要研究在焊接夹具中增加动力头钻孔装置,将钻孔工序与焊接夹具进行有机结合,即在焊接夹具上除进行焊接外还完成钻孔,这样既降低了冲压模具的开发费用和产品制造成本,同时也减少了冲压钻孔的流转工序,针对焊接位置的相对性,更能保证加工后孔位置的精度。为了减少钻头受热引起的机械性能降低,在该装置中增加自动浇注冷却系统。
In the process of punching and drilling a car frame side beam, in order to ensure that it is not deformed during the stamping process, the drilling mold is usually added after the stamping. Due to the longer frame longitudinal beam springback, large deviation after drilling, assembly deviation greater after welding. At the same time, this method not only increases the development cost of stamping dies, increases the product manufacturing cost, but also increases the manufacturing process flow process. In this paper, the main study of the welding fixture to increase power head drilling device, the drilling process and welding fixture organically, that is, in addition to the welding fixture welding but also to complete the drilling, thus reducing the stamping die development costs and products Manufacturing costs, but also reduce the flow of stamping drilling process, the relative position of the welding, but also to ensure the accuracy of the hole position after processing. In order to reduce the mechanical properties caused by the drill to reduce the heat, adding automatic cooling system in the device.