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1·The blanking clearance and rational blanking clearance are narrated.

叙述了冲裁间隙和合理冲裁间隙。

2·The relation between the blanking clearance and quality of blanked parts is analyzed.

分析了冲裁间隙与冲裁件质量的关系。

3·By experimenting, analyse the optimum value's choice of blanking clearance, and give some referred data and methods for die's design.

通过实践分析讨论了冲裁模间隙的最佳取值，并给出了冲裁模设计用参考性数据和方法。

4·The effect of blanking clearance on the quality of blanked parts is discussed and the solving method of the defect of blanked parts is presented.

讨论了冲裁间隙对冲裁件质量的影响，并提出了解决冲裁件缺陷的措施。

5·Structure design and material choice of important parts such as the die, blank holder, etc. were stated in detail. Also, fine blanking clearance was analysed and selected.

详细阐述了光洁冲裁凹模、压边圈等重要零件的结构设计与选材，并对光洁冲裁间隙进行了分析和选择。

6·Through choosing the blanking clearance of material in reasonable, just by one die blanking the different thickness of very thin gaskets, the die structure was simple and practical.

通过对材料冲裁间隙的合理选取，只用一副冲模就实现了对厚度不同的超薄垫圈的生产，且模具结构简单、实用。

7·Analyse the functions of blanking clearance and its influence to the die and workpiece. Illustrate that only select fairly larged clearance in general blanking, die life would be increased.

重点分析了冲裁间隙的功能及其对模具、工件的影响，说明在普通冲裁工艺中，选用较大冲裁间隙，能提高模具寿命。

8·In the blanking of thin material, blanking dies without clearance are usually chosen.

在冲裁薄料时，通常要用的是无间隙的冲模。