摘要：本设计的内容是火花塞支架成型工艺及级进模设计，多工位级进模相比普通级进模，具有高精度，高效率，寿命长等优点，已经越来越多地被广大用户认识并使用，是未来制造业发展的方向之一。在设计的第一部分是通过对制件冲压工艺的分析，拟定了三种可实施的方案，本制件需要6个工位，在对三种方案进行比对后，选出了最合适的方案。在该模具中，包括了冲孔，翻遍，弯曲，落料等的工序，通过UGNX对零件进行三维模型的绘制，然后就是模具搭边值、步距和条料宽度等内容进行计算，并绘制出排样图。确定排样图之后进行了对模具每个工序的工艺计算，相关计算内容，包括：冲裁力、卸料力、顶件力、弯曲力、翻边力等的计算。在弯曲工序中，会产生回弹和偏移等问题，本文通过制件实际情况给出了相应的解决和克服措施。在完成以上内容的前提下，就是对模具相关结构的设计，包括凸模和凹模，及模架结构的绘制，并且在最后一部分对模具的结构进行完善。57650

毕业论文关键词： 多工位级进模；冲压工艺；UGNX

 Forming process and progressive die design of spark plug support based on NX

Abstract: The content of this design is the spark plug bracket forming process and die design, multi position progressive die compared to ordinary progressive die, which has the advantages of high precision, high efficiency, long life and other advantages, has been more and more is the vast number of users to recognize and use, is the industry development direction of manufacturing in the future. In the design of the first part is through the stamping process analysis, to develop three kinds of implementation plan, this part needs 6 working positions, in the three schemes for comparison, the most suitable solution. In the mold, including punching, rummaged, bending, material process, by UGNX of parts were 3D model rendering, then take the mold boundary value, step distance and strip width content were calculated, and draw the layout. Determine the layout map after each procedure of mold process calculation, calculation content, including: punching blanking force, stripping force, ejecting force, bending, flanging force calculation. In the bending process, it will produce rebound and offset and so on, this paper gives the corresponding solution and overcoming measures through the actual situation of the parts. Under the premise of the completion of the above content, is the relative structure of the mold design, including convex die and the concave die and mould structure drawing, and in the last part of mold structure to improve.

Key words: multi station progressive die design; Stamping process; NX10.0 UG

目  录

1  绪论  1

1.1  课题的意义和目的 1

1.2  我国模具发展的现状和趋势1

1.3  级进模的概述及特点 2

2  产品设计分析和方案选择 3

2.1  产品设计要求3

2.2  制件结构分析3

2.3  制件材料的性能分析4

2.4  制件加工工艺的设计和选择4

3  排样设计及相关计算  7

3.1  搭边值确定 7

3.2  送料步距和条料宽度计算 7

3.3  材料利用率的计算 7

3.4  排样图设计 8

4  冲模工艺计算  10

4.1  冲裁力计算10

4.2  卸料力、推料力和顶件力的计算10

4.3  冲模压力中心的计算11

4.3.1  确定压力中心的目的 11

4.3.2  压力中心的计算 11

4.4  翻边力计算12

4.5  弯曲的工艺性和弯曲力的计算12

4.5.1  弯曲力计算 12

4.5.2  弯曲中性层位置的确定 13