论文部分内容阅读
据调查发现,在一个普通的美国家庭中,大约有十万个金属冲制件。如家用机械工具,厨房用品、录音机、电器设备、玩具、计算机、开关和锁等都是很普通的家用品,在这些产品中都含有大量的金属冲制件。至于它们的作用从上述例子中就可以得到说明。许多金属冲制件是平面的,而另一部份则要通过弯曲、拉深等工序才能加工成复杂形状。为了设计用来生产这类复杂形状金属冲制件的模具,模具设计者必须计算出它们的展开图。只有计算出所有弯曲长度修正量和在弯曲线之间的孔和狭槽等相对于外轮廓的位置后,
According to the survey, in a common American family, there are about 100,000 pieces of metal stamping. Household appliances, kitchen supplies, tape recorders, electrical equipment, toys, computers, switches and locks are all very common household items, all of which contain a large amount of metal stamping parts. As for their role from the above examples can be explained. Many metal stamping parts are flat, while the other part through the bending, drawing and other processes can be processed into complex shapes. In order to design the molds used to produce such complex shapes of metal punches, the mold designer must calculate their expansion plans. Only after all the bending length correction amount and the position of the hole, the slit or the like with respect to the outer contour between the bending lines are calculated,