“后防塵罩”沖壓工藝及模具設計

摘    要

“后防塵罩”零件形狀復雜、材料相對厚度?。?.88mm），生產批量大。采用沖壓成形方法具有生產率高，加工成本低，材料利用率高，產品尺寸精度穩(wěn)定，操作簡單，容易實現(xiàn)機械化和自動化等一系列優(yōu)點，特別適合于大批量生產。本文闡述了對該零件沖壓工藝設計及部分工序模具零件的設計。工藝設計是決定該零件能否順利成形的關鍵,也是其模具設計與制造的基礎,直接關系到產品的質量、成本、生產效率和模具的使用壽命。作者用了大篇幅全面系統(tǒng)的分析該零件工藝設計過程和兩套模具工作部分零件設計過程，并對落料凹模的制造進行了分析。
針對該零件的沖壓工藝，作者合理的選用、安排和組合沖裁、拉深、成型工序，并對各個工序進行了必要的計算，選擇了相應的沖壓設備，制定出一套比較可行的沖壓工藝方案。針對沖壓模具設計，作者選取落料拉深和翻邊兩套模具，全面的分析了模具結構設計，并對這兩套模具的工作部分零件進行了設計和計算。針對模具制造，本文以落料凹模為例分析了該零件的制造工藝流程，并制訂出工藝卡。

關鍵詞：沖壓工藝，沖壓模具，落料，拉深，翻邊

ABSTRACT

“Shield against dust in the rear” is complicated in shape,and has small relative thickness, about 0.88mm,which is produced a mass.The method of producing this part By stamping method has high productivity, high utilization of materials, but low processing costs.The dimensional accuracy of the products is stability.This method is simple to Operate, and easy to implement mechanization and automation.And it is particularly suitable for mass production. This paper describes the process planning of the part stamping and the design of the dies in some stamping process. To the product quality, product efficiency, costs and life of dies, process design is a key factor for the forming of  shield against dust in the rear ,and the foundation for related die design and manufacturing. The author spent a great word to give  a comprehensive and systematic analysis of the process design for the part  and some key parts design of the two sets of dies,and the analysis of the blanking die manufacturers.
In the part of stamping process of the part, the author reasonably choices, arrangements and combines punching, drawing, molding processes, makes some the necessary calculations for various processes , and selects the corresponding stamping equipment. A set of feasible stamping process Programme is developded. In the part of stamping die design, for blanking drawing and flanging dies, the author gives a comprehensive analysis of the structural design of the dies and give some design and calculation for the key pats in the two sets of dies. In the part of mold manufacturing, the paper gives the blanking die manufacturing processes as an example to analysis and creates a technology card.

Key words：Stamping Process, Stamping die, Blanking, Drawing, Flanging

目   錄

中文摘要  Ⅰ
ABSTRACT Ⅱ
1  緒論 1
1.1沖壓工藝特點 1
1.2沖壓基本工序的技術特點 1
1.3沖壓模具 2
2  “后防塵罩”零件沖壓工藝設計 4
2.1可沖壓性分析 4
2.2復合工序的可行性和必要性 4
2.3沖壓工藝順序確定 5
2.4工藝計算 5
2.4.1坯件尺寸計算 5
2.4.2工藝參數(shù)計算及設備選擇 6
2.5工藝流程卡 12
3  “后防塵罩”零件沖壓模具設計 14
3.1“后防塵罩”落料拉深復合模 14
3.1.1模具結構設計 15
3.1.2模具主要零件設計 18
3.2“后防塵罩”翻邊模具 21
3.2.1模具結構設計 22
3.2.2模具主要零件設計 24
4.落料凹模零件制造工藝流程 27
4.1落料凹模材料性能特點 27
4.2落料凹模造作工藝流程 27
5  結論 29
主要參考文獻 31