摘要近年来，随着粉末成形技术的快速发展，成形坯件的种类越来越多，传统的机械式送料系统已不能满足高性能粉末成形机对送料时间和粉末用量控制等方面的要求。为了解决这一问题，本课题采用液压伺服送料系统替代传统机械式送料系统，得到了一套新型送料系统设计方案，对粉末成形机的发展有重要意义。62925

首先，本课题介绍了与送料系统相关的粉末压制成形技术以及国内外送料系统的发展现状和趋势；其次，通过对传统机械式送料系统中出现的问题进行分析，提出把液压伺服控制应用到送料系统中，论证了方案的可行性并进行了理论计算与结构设计；再次，利用Pro/E软件进行了送料系统的三维建模与装配；最后，基于ANSYS Workbench平台，对送料系统的整体结构进行了静力学分析和模态分析。

毕业论文关键词  粉末成形；送料系统；伺服控制；结构设计；三维建模；有限元

 毕业设计说明书（论文）外文摘要

Title  The Feeding System of the 500T Powder Molding Machine                     

Abstract For the past few years, with the rapid development of the powder molding technology, the traditional mechanical feeding system cannot meet the requirement of the delivery time and powder dosage control, and much more kinds of complex die-casting parts are coming out. To solve this problem, the hydraulic servo control feeding system is used. In this paper, a new type of feeding system has been designed to replace the mechanical feeding system, which is quite significant to the development of powder forming machine.

First of all, this paper introduced the powder molding technology both at home and abroad; then through the analysis of the problems in mechanical feeding system, the solution of applying the hydraulic servo control technology is raised; thirdly, the 3D modeling and assembling are built by using Pro/E; and lastly the statics and modal of the overall structure system are analyzed based on ANSYS Workbench.

Keywords  Powder molding technology, Feeding system, Structure design, Servo control system, Co-simulation，Finite Element

目  录

1 绪论 1

1.1本课题的来源和研究意义 1

1.1.1 课题来源 1

1.1.2 课题研究意义 1

1.2粉末压制成形技术简介 1

1.2.1 粉末压制成形技术概况 1

1.2.2粉末压制成形原理 2

1.2.3 粉末压制方式分类 3

1.2.4 压制方式对坯件密度的影响 4

1.3 粉末成形机送料系统的现状 6

1.3.1送料系统 6

1.3.2自动装料 7

1.4 本章小结 9

2 送料系统方案设计 10

2.1 问题分析 10

2.2 方案设计 11

2.2.1 初步设计 11

2.2.2 方案分析 11

2.3 关键零件结构设计 13

2.3.1 送料凸轮 13

2.3.2 送料摆杆 15

2.3.3 送料器拉杆和压板 16

2.4 本章小结