A3-内板零件图
自行车脚蹬内板冲压工艺分析与模具设计
摘要
冲压模具类型中，级进模生产效率高，容易实现生产机械化和自动化，常用于在批量生产。
本文依据自行车脚蹬内板冲压落料模，冲压零件结构简单，精度要求不高，尺寸不大，属于常年大批量生产。经过结构分析和工艺分析，择优方案如下：采用多工位级进模生产，分别进行冲孔、翻边、整形、冲大孔、冲小孔、落料六道基本工序。零件材料为Q235，此材料塑性好，有一定强度，适用于受力不大的零件。除了凹、凸模之外，定位是级进模设计的重点，经过计算与比较，第一工位设置始用挡料装置、第二工位采用弹顶挡料销、其余工位采用导正销结合导料板进行定位，以保证定位的准确和冲压件的尺寸要求。并配合对角型导柱模架进行导向，以提高模具寿命和工作质量。此外，托料杆保证送料，弹性卸料板卸料，卸料力不太大并且冲压时可兼起压料作用。该级进模方案可以实现自动化生产，提高工作效率，并且降低成本，同时保证工件的生产要求。
关键字：冲压；级进模；冲孔；翻边；落料
Abstract
In the different types of stamping die, the progressive die is commonly used in mass production because of high production efficiency, and it is easy to implement mechanization and automation in the production
On the basic of the bicycle pedal board stamping blanking die, this stamping parts has simple structure, the precision of the part is not too high, the size is not big, shape is not complex, and it belongs to high-volume production. After the structural analysis and process analysis, the final program has been determine, that is, the multi-position progressive die is used in production, next, it respectively finishes six basic processes including piercing,flanging, shaping, punching the large holes, punching the small holes and blanking. the material of the part is Q235which has good plastic and certain strength,it is usually used for the partswhich is not force heavily.In addition to the terrace die and the lower die, positioning is the focus of progressive die design,. After calculated and compared, the always-used trigger device is used in the first operating station, the trigger stop is used in the second operating station, the other station use guide pins toworkwith the guide plate for positioningwhichwill ensure the accurate position and size requirements of the stampings. diagonal guide pillars die setwith spring stripper is for guide to improve die life and quality of theworkpieces. The holding pole is used to ensure the material feeding, the spring stripper to discharge, its discharge power is not too large and it can binder in the stamping. This program of progressive die can automate the production, improve efficiency and reduce costs, at the same time, it can ensure the production requirements of theworkpiece
Keywords: stamping ; progressive die ; punching ; flanging ; blanking
目录
引言1
1零件工艺分析及工艺方案的确定2
1.1零件结构分析2
1.2工艺方案分析及确定3
1.3冲压零件材料的选择4
2零件排样方案的确定及计算4
2.1排样方法4
2.2搭边和料宽5
3各工序中所需力的计算8
3.1翻边力的计算8
3.2冲裁力的计算9
3.3整形压力： 10
3.4卸料力、顶件力及推件力的计算11
4冲压设备的选择. 12
4.1压力中心的计算12
4.2冲压设备类型的选择12
4.3冲压设备规格的选择13
5模具主要尺寸的计算13
5.1翻边工序凸、凹模计算13
5.2各冲裁工位凸、凹模计算14
5.2.1冲裁间隙影响及合理选值14
5.2.2各冲裁工序凹凸模刃口尺寸计算15
5.3整形工序的凸凹模设计18
6冲裁模具主要零部件设计18
6.1凸模类型及长度计算19
6.1.1凸模的类型19
6.1.2各个凸模长度计算19
6.1.3各凸模的强度校核20
6.2凹模结构23
6.3定位零件24
6.3.1导料板24
6.3.2挡料销、导正销25
6.4卸料、托料装置： 26
6.4.1卸料装置26
6.4.2托料装置28
6.5模架及零件28
6.5.1模架28
6.5.2导柱、导套29
6.5.3模柄29
6.5.4垫板30
7模具材料的选用和热处理方法30
7.1凸模与凹模材料和热处理30
7.2冲裁模零部件的材料和热处理30
8模具的装配、调试与工作流程31
8.1模具的装配31
8.2冲裁模具的调试34
8.3最终方案级进模的工作过程概述35
9级进模工作流程及零部件工艺卡36
10总结40
谢辞41
参考文献42
A0-装配图
凹模-A1
冲大孔凸模-A3
冲小孔凹模镶块-A3
冲小孔凸模-A3
冲预制孔凹模镶块-A3
翻边凸模-A3
排样图-A3
外形凸模-A3
卸料板-A1
预冲孔凸模-A3
整形凸模-A3
2摘要
3设计所包含文件
4目录
1字数
5工艺分析
