凸模

The shaping course of Fine blanking is very complex. Material forms a local plastic cutting area between punch and bottom die, and brings violent plastic flow under the effect of press stress. The grad of stress and strain is great, and it is an unstable transmutation process that came through an elastic distortion, plastic distortion and cut rupture.

精冲成形过程非常复杂，材料在狭窄的凸、凹模间隙附近形成了局部塑性剪切带，在压应力的作用下产生强烈的塑性流动，应力应变梯度很大，是一个经历弹性变形、塑性变形和剪切断裂的非稳态大变形过程。

With the exception of severe blank holder deflection, these factors can be corrected by making minor permanent adjustments, such as increasing the blank holder force, re-adjusting the equalizer height, and refitting or spotting the blank holder or the die face.

除了压边圈的严重变形外，这些因素都可以通过最小的永久性调整来矫正，如增加压边力、调整平衡块的高度和重新匹配或研配压边圈或凸/凹模的型面。

The bending and pressing convex forming compound die for locking spring is designed, the die structure and pressing process are introduced, the product quality and production efficiency are improved.

针对锁紧片零件，设计了折弯压凸复合模，并介绍了模具结构和工作过程。

Specifically, the design of the book are fixed jig for radial drilling holes on the processing and set the flange on the fixture for drilling at its fixed level job

具体的说本书设计的是固定式钻模，用于摇臂钻上加工孔系，并且在夹具上设置凸缘，便于将其固定在钻床工作面上。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。