P463LZ-1型LED灯散热体冲压成形误差建模及其四级级进模具技术研究

发布时间：2018-04-23 06:47

本文选题：误差反向传播算法 + 一次缩口　；参考：《华侨大学》2015年硕士论文

【摘要】：近年来在全球民众节能意识的高涨与相对较高的电价下,建筑、商业应用领域等持续导入LED灯照明,LED灯照明产业取得了突飞猛进的发展。散热体作为解决LED灯散热问题的关键部件,其决定着LED灯的使用寿命,其相关的设计与制造至关重要。同时如何提高板料冲压的成形精度一直是从事冲压成形研究人员所关注的问题,板料冲压板料冲压成形尺寸、形状误差全因素通用数学模型的研究甚少,而其可实现对各类零件冲压成形误差的主动控制,指导实际生产,提高企业产品的成形精度和生产经济性等,其研究意义重大。本课题研究基于产学研合作项目的P463LZ-1型LED灯散热体产品,该产品传统的成形工艺采用级进模具冲压的方式,其传统的冲压工艺为拉深、拉深、反拉深、反拉深、冲孔、缩口、缩口等多道工序。首先建立板料冲压前的通用物理模型,以直观地表达板料冲压前的形状参数;基于层次分析法,整理细化影响板料冲压成形尺寸、形状精度的因素,并分析这些因素与板料冲压成形尺寸、形状误差的关系,基于误差反向传播算法,研究板料冲压成形尺寸、形状误差全因素通用数学模型,通过仿真与实验,验证所建立的板料冲压成形尺寸、形状误差全因素通用数学模型的可行性与通用性;其次基于理论分析与实际经验,研究P463LZ-1型LED灯散热体四级冲压新工艺,通过仿真,分析所设计的四级冲压新工艺的可行性;之后基于板料冲压成形尺寸、形状误差全因素通用数学模型与四级冲压新工艺,研究P463LZ-1型LED灯散热体冲压成形尺寸、形状误差数学模型,通过仿真,验证所建立的P463LZ-1型LED灯散热体冲压成形尺寸、形状误差数学模型的实用性;最后通过分析四级级进模具的设计难点,提出相应的解决方法,去设计P463LZ-1型LED灯散热体四级级进模具,并分析该四级级进模具的经济性。通过上述研究,以提高企业生产P463LZ-1型LED灯散热体产品的精度和效益。本文的主要工作如下:(1)板料冲压成形尺寸、形状误差全因素通用数学模型的建立与验证;(2)P463LZ-1型LED灯散热体四级冲压新工艺的设计;(3)基于板料冲压成形尺寸、形状误差全因素通用数学模型与四级冲压新工艺,P463LZ-1型LED灯散热体冲压成形尺寸、形状误差数学模型的建立与验证;(4)基于四级冲压新工艺,P463LZ-1型LED灯散热体四级级进模具的设计。
[Abstract]:In recent years, with the global awareness of energy conservation and relatively high electricity prices, construction, commercial applications and other areas of continuous introduction of LED lighting lighting industry has made rapid progress. As a key component to solve the heat dissipation problem of LED lamps, the heat dissipation body determines the service life of LED lamps, and its related design and manufacture are very important. At the same time, how to improve the forming accuracy of sheet metal stamping has always been the concern of the punching researchers. There are few researches on the universal mathematical model of forming size and shape error of sheet metal stamping. It can realize the active control of forming error of all kinds of parts, guide the actual production, and improve the forming precision and production economy of the enterprise products, which is of great significance. This topic studies the P463LZ-1 type LED lamp heat sink product based on the cooperation project of industry, university and research. The traditional forming process of this product adopts the way of progressive die tool stamping. The traditional stamping technology is drawing, drawing, reverse drawing, reverse drawing, punching and shrinking. Shrink mouth and other processes. Firstly, the general physical model of sheet metal before stamping is established to express the shape parameters of sheet metal before stamping intuitively, and based on the analytic hierarchy process, the factors that influence the size and precision of sheet metal forming are sorted out. The relationship between these factors and sheet metal forming size and shape error is analyzed. Based on the error back propagation algorithm, the universal mathematical model of sheet metal forming size and shape error is studied. Verify the feasibility and generality of the established universal mathematical model of sheet metal forming size and shape error. Secondly, based on theoretical analysis and practical experience, the new four-stage stamping process of P463LZ-1 type LED lamp heat sink is studied. The feasibility of the new four-stage stamping process is analyzed, and then, based on the universal mathematical model of sheet metal forming size, shape error and new four-stage stamping process, the forming size of P463LZ-1 type LED lamp radiator is studied. The mathematical model of shape error is verified by simulation to verify the practicability of the mathematical model of forming size and shape error of the heat dissipation body of P463LZ-1 type LED lamp. Finally, through the analysis of the difficulties in the design of the four-level progressive die tool, the corresponding solutions are put forward. To design the P463LZ-1 type LED lamp heat dissipation body four stage progressive die, and analyze the economy of the four stage progressive die. In order to improve the accuracy and benefit of the production of P463LZ-1 type LED lamp heat sink by the above research. The main work of this paper is as follows: (1) the establishment and verification of a universal mathematical model for sheet metal forming size and shape error. The design of a new four-stage stamping process for type P463LZ-1 LED lamp is based on the size of sheet metal stamping. The General Mathematical Model of all factors of shape error and the New process of Four-stage stamping process P463LZ-1 LED lamp heat sink forming size and mathematical model of shape error are established and verified. Based on the design of four-stage stamping new process P463LZ-1 LED lamp heat sink four-stage progressive die.
【学位授予单位】：华侨大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TM923.34;TG386

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