摘要：本课题研究的是铰链板成形工艺的分析以及模具的设计。为了满足中小批量不同规格的铰链板的加工，将采用多工位级进模。包括：冲裁、弯曲成形、整形和切断。首先为了控制能加工出不同规格尺寸的铰链板，宜采用气动式活络冲头对其进行冲裁切断，易于操作。在开始时首先对板料进行了预切，成形结束后对所剩余料进行切除。目的在于保证铰链板的质量，使其具有足够的抗扭强度，避免产生扭曲现象。成型过程将包括两次预弯、一次成形。成形过程采取凹模在上，凸模在下的向上卷圆方法，即能去除毛刺，从而省略了单独去除毛刺的工序。成形结束后对所剩余料进行切除后再对产品进行整形。这样便能得到合格的制件。除此之外，为了能确保铰链板的精度要求，导正销定位能更好的起到精确定位的作用。采用多工位级进模不但保证了产品的质量，而且还节省了成本以及生产周期。为其整个制造过程提供了便利。23033
毕业论文关键词： 铰链板；级进模；弯曲成型
Mould design and process analysis of a hinge plate
Abstract: The project focus on the mould design and process analysis of a hinge plate. To satisfy the manufacturing of different specifications and amounts of hinge plates, a multi-step progressive die will be used. It includes stamping, bending, sizing and cutting. First, to make it available for different size of hinge plates as well as easy to operate, pneumatic adjustable punch is selected for the stamping. Besides, the sheet should be pre-cut. The excess material will not be cut until the bending formation is completed. The purpose of processing in this order is to assure the torsion strength and avoid distortion so that the quality of the product can be guaranteed. The bending formation includes three steps: pre-bending for twice and final forming. For the bending formation, the female die is placed on the top while the male die is at the bottom. So the edge of the sheet will roll upward. This method can burr the edge as well. The use of guide pin in the design of mould will help when locating, thus meet the precision requirement of the hinge plate. By using such a multi-step progressive die, we can not only assure the quality of the product, but also save cost and time. Thus the whole manufacturing process will be convenient.
Key words: hinge plate; multi-step progressive die; bending
目 录
绪论 1
1 铰链板的工艺分析 4
1.1 铰链板的用途 4
1.2 铰链板的结构特点 4
1.3 铰链板的材料特性 4
1.4 铰链板材料的成型性能 5
2 模具基本结构的确定 6
2.1 方案的确定6
2.2 冲裁模7
2.3 弯曲成形模9
2.3.1 第一次弯曲模 10
2.3.2 第二次弯曲模11
2.3.3 第三次弯曲模13
2.4 冲裁模14
2.5 整形模16
2.6 切断模17
2.6.1 切断模1 18
2.6.2 切断模2 19
2.7 重要零部件设计20
2.7.1 活络冲头 20
2.7.2 导正销 21
2.8 模具材料Cr12的特性22
2.8.1 适用范围 23
2.8.2 热处理工艺 23
3 压力机的确定 24
3.1 冲裁力的计算 24
3.2 弯曲力的计算 26
3.3 冲裁力的计算 27
结论29
谢辞30
参考文献31
绪论
本课题研究的是铰链板的成形工艺分析以及模具的设计，此铰链板主要用于加工中心的链板式排屑机中。由于其结构以及质量要求的严格，以及如今劳动力代价的不断上涨，我们将采取多工位级进模对其进行加工。这样不断节省了劳动成本，而且还保证了产品质量并且缩短了整个制造的生产周期。 铰链板成形工艺分析与模具设计说明书+CAD图纸:http://www.751com.cn/jixie/lunwen_15939.html