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折彎墊片沖壓成形工藝與模具設計
摘要：本設計題目為墊片沖裁模，體現(xiàn)了典型沖裁模的設計要求、內(nèi)容及方向，有一定的設計意義。通過對該模具的設計，加強了設計者對沖裁模設計基礎知識的理解和運用，為設計更復雜的沖裁模具做好了鋪墊。
本設計運用沖裁工藝及模具設計的基礎知識，首先分析了板材的性能要求，為選取模具的類型做好了準備；然后計算了沖裁件的沖裁力，便于選取壓力機噸位及確定壓力機型號；最后分析了沖裁件的特征，便于確定模具的設計參數(shù)、設計要點及卸件裝置。
本設計采用了沖孔—落料復合模成形墊片。成形原理可劃分為三個階段：首先沖孔凸模與凹模共同作用先沖出四個5mm，而后利用第一步?jīng)_出的四個5mm孔做精確定位使外形凸模與凹模共同作用使工件落料成形，最后一步是進行折彎。
關鍵詞： 沖孔—落料復合模 沖孔凸模 凹模 壓力機噸位
Bending sheet stamping forming technology and die design
Abstract：The topic for the design is pad blanking die design,It has manifested the typical blanking dies design request, the content and the direction, has certain design significance.Through the design of the component mold, strengthens the designer’s understand and utilize to the blanking die design basical knowledge,has prepareed for designing more complex blanking die.
The design has utilize blanking craft and the basical knowledge of the mold design, has first analyzed the property requirement of the plate , has prepared for selecting the mold type；then has calculated the blanking strength,has advantaged to select the press tonnage and determine press model; Finally has analyzed the characteristic of the products, has advantaged to finite the mold design variable,the design main point and shedder.
This design used piercing and blanking progressive die to form the products.The forming principle can be divided to two stages: First, piercing punch and die affect together and pierce four holes of3.2mm and one hole of8.5mm,then use the four holes and the one hole as pinpoint to make the product formed.
Key word: Piercing and blanking progressive die Piercing punch Press Tonnage
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