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铝汽缸挤压成形模具设计、成形模拟与生产试验

摘 要

本设计为挤压模设计,零件为平高电气压气缸。经过对零件进行工艺性分析,完全完成压气缸的设计与制造,需要进行复合挤、冲孔、反挤压成型和后续机加工等四步工序来完成。通过对可行性方案进行比较,最后确定该零件的最佳工艺方案为:先在400度的温度下进行复合挤压,在冲孔模上进行冲孔,再进行反挤压成型,最后再进行后续机加工。 本文按照模具设计的一般步骤和要求,分析了挤压模技术应用现状、国外新技术、挤压模成形关键点及其制造工艺方案,介绍了热挤压工艺、冷挤压工艺成型的特点。同时也说明采用多工序组合方法制定工艺,依据金属塑性流动规律设计模具,在确保挤压成形精度和内在质量的前提下探索压气缸成形技术。 采用挤压工艺生产压气缸不但可以节省原材料、节省劳动力,而且还可以提高生产率。并且采用挤压工艺生产的零件机械性能较其他加工方法好。所以采用挤压工艺生产这种零件是比较理想的,可以创造良好的经济效益。

关键字:复合挤压,反挤压,冲孔,压气缸

Cylinder aluminum extrusion die design, molding simulation and pilot production

ABSTRACT

The design of the extrusion die design, high-level components for the electrical pressure cylinder. After the parts for process analysis, the full completion of the pressure cylinder design and manufacturing, the need for extrusion and punching, Anti-extruding machine and follow-up four-step process to complete. Through the feasibility of the program, the final determination of the best parts of the program : first in the 400 degree temperature composite extrusion, the punching die on punching, and anti-extrusion molding, Finally, the follow-up machining In this paper, in accordance with the general mold design steps and requirements analysis of extrusion technology application status, new techniques from abroad, Extrusion Die Forming key points and the Manufacturing Technology program, introduced the hot extrusion process, cold extrusion process molding characteristics. Also show a multi-portfolio approach in process technology, based on the plastic flow of metal mold design. the extrusion process to ensure accuracy and quality of exploration under the premise of cylinder pressure forming technology Squeeze pressure cylinder production process will not only save raw materials, labor-saving, but can also increase productivity. Extrusion Technology and used parts production mechanical properties than other processing methods well. So using extrusion process to produce such parts is more satisfactory, it can create a good economic benefits.

KEY WORDS:composite extrusion, extrusion and punching, pressure cylinders

目 录

前言............................ ...... ...... ...........1 第一章挤压件图............................... ........... 4 第二章 压气缸的工艺性分析及工艺方案的确定......... ......5 §2、1 零件的工艺分析及工艺方案的确定........ .......5 §2.1.1 零件的工艺分析........................ 5 §2.1.2 零件的工艺方案的确定.................. 5 §2.2 毛坯的选择及成形温度的选择............ .......7 第三章热挤压工艺参数的计算、压力机的选择及挤压模具设计....9 §3.1 挤压力的计算................................. .9§3.2 压力机的选择................................. .9§3.3 模具工作部分设计............................ .10 §3.3.1凸模的设计............................10§3.3.2凹模的设计............................10 §3.3.3凹模压套的设计....................... 11 §3、4 凸凹模定位部分的设计........................ 11 §3.4.1凸模定位部分的设计.................... 11 §3.4.2凹模定位部分的设计................... 11 §3、5 顶出部分的设计.............................. 12 §3、6模具总装图................................... 12 §3、7闭合高度、行程的检验......................... 13 第四章 冷挤压工艺参数的计算、压力机的选择及挤压模具设计............................................. 14 §4.1单位挤压力的计算..............................14§4.1.1经验公式法............................ 14 §4.1.2图算法................................14 §4.1.3计算法................................14 §4.2 压力机的选择................................. 15 §4、3 模具工作部分的设计...........................15 §4.3.1凸模的设计............................16§4.3.2凹模的设计............................16 §4.3.3凹模压套的设计........................17 §4、4凸凹模定位部分的设计.........................17 §4.4.1凸模定位部分的设计................... 17 §4.4.2凹模定位部分的设计....................18 §4、5 顶出部分的设计..............................18 §4、6模具总装图.................................. 19...
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