【正文】 畢業(yè)設(shè)計(jì) II ABSTRACT Most modern cars have a skeleton as a vehicle frame, the frame is the matrix of the entire car, the car chassis is one of the support parts in the automobile chassis, a large number of chassis was used for automobile covering parts and installation mechanism, its shape different is supporting installation of automotive engine and its ponents, assembly to form the overall shape of the car, and to accept the power of the engine, the car produces sports to ensure normal driving. Most of the chassis to support all massproduced by stamping dies，mold design and processing technology related to the quality of the product. The mold industry is the basic industry of the national economy, the level of mold design and manufacturing technology, is one important indicator for measuring a country39。沖孔模 。 關(guān)鍵詞 :汽車底盤 。通過(guò)沖壓設(shè)計(jì)手冊(cè)，依據(jù)凹模尺寸查得整副模具的尺寸要求。 模具工業(yè)是國(guó)民經(jīng)濟(jì)的基礎(chǔ)工業(yè)，模具設(shè)計(jì)與制造技術(shù)水平的高低，是衡量一個(gè)國(guó)家產(chǎn)品制造水平高低的重要標(biāo)志之一。 2022 屆 分 類 號(hào) :TG385 單位代碼 :10452 畢業(yè)論文（設(shè)計(jì)） 汽車底盤支架沖孔模具設(shè)計(jì) 姓 名 董海龍 學(xué) 號(hào) 202203750228 年 級(jí) 2022 專 業(yè) 機(jī)械設(shè)計(jì)制造及其自動(dòng)化 系 （院） 機(jī)械工程學(xué)院 指導(dǎo)教師 楊瑞寧 2022 年 3 月 30 日臨沂大學(xué)機(jī)械工程學(xué)院 2022 屆本科畢業(yè)設(shè)計(jì) I 摘 要 現(xiàn)代汽車絕大多數(shù)都具有作為整車骨架的車架，車架是整個(gè)汽車的基體，其中汽車底盤支架是汽車底盤里的支撐零件之一，汽車底盤支架，大量用于汽車覆蓋件、安裝機(jī)構(gòu)上，其形狀各異， 是支承、安裝汽車發(fā)動(dòng)機(jī)及其各部件、總成，形成汽車的整體造型，并接受發(fā)動(dòng)機(jī)的動(dòng)力，使汽車產(chǎn)生 運(yùn)動(dòng)，保證正常行駛。 大多數(shù)汽車底盤支架都是通過(guò)沖壓模具來(lái)批量生產(chǎn)的，模具的設(shè)計(jì)與加工工藝關(guān)系到產(chǎn)品的質(zhì)量。本文以汽車底盤支架沖孔為例，根據(jù)該支架的實(shí)際尺寸和形狀特點(diǎn)，進(jìn)行了沖壓工藝的分析以及模具凹模尺寸的確定。運(yùn)用 CAD 軟件對(duì)沖孔模具的設(shè)計(jì)，得出了具體的沖壓設(shè)備與沖孔模具各零件的加工工藝。支架 。沖壓工藝 。s level of product manufacturing. According to the actual size and shape of the bracket features ， in this paper, an example chassis bracket punching， Stamping process carried out the analysis and determine the size of the die mold. Design Manual by pressing, investigation was based on die size of the entire vice die size requirements. Punching mold design, draw a specific process of stamping and punching mold parts using CAD software. Key words: Chassis。 Piercing Die。 Design 臨沂大學(xué)機(jī)械工程學(xué)院 2022 屆本科畢業(yè)設(shè)計(jì) III 目 錄 1 緒論 ........................................................................................................................................ 1 選題的背景、目的和意義 ............................................................................................. 1 國(guó)內(nèi)外模具發(fā)展?fàn)顩r及 趨勢(shì) ......................................................................................... 1 本次設(shè)計(jì)的主要方向 ..................................................................................................... 2 2 汽車底盤支架沖壓工藝 ........................................................................................................ 4 沖壓件工藝分析 ............................................................................................................. 4 零件沖壓工藝方案的分析及確定 ................................................................................. 4 制件排樣及搭邊 ............................................................................................................. 6 3 汽車底盤支架模具的工藝尺寸計(jì)算 .................................................................................... 8 工作零件刃口尺寸計(jì)算 ................................................................................................. 8 刃口尺寸確定的原則 .............................................................................................. 8 刃口尺寸確定的方法 .............................................................................................. 8 沖裁力與壓力中心的計(jì)算 ........................................................................................... 10 沖裁力的計(jì)算 ........................................................................................................ 10 卸料力、推件力及頂件力的計(jì)算 ........................................................................ 10 汽車底盤支架沖模壓力中心的確定 ........................................................................... 11 4 汽車底盤支架沖孔模具設(shè)計(jì) .............................................................................................. 12 沖孔模具的總體設(shè)計(jì) ................................................................................................... 12 沖孔模具 類型的確定 ............................................................................................ 12 定位零件的選擇 .................................................................................................... 12 卸料、出件方式的選擇 ........................................................................................ 12 導(dǎo)向裝置的選擇 .................................................................................................... 12 工作零件結(jié)構(gòu)尺寸 ....................................................................................................... 13 沖孔凸模尺寸 ....................................................................................................... 13 沖孔凹模尺寸 ........................................................................................................ 13 聚胺脂橡膠的選用與計(jì)算 .................................................................................... 13 其它模具零件結(jié)構(gòu)尺寸及模架尺寸 .................................................................... 14 模具裝配圖 ................................................................................................................... 15 5 汽車底盤支架沖壓設(shè)備的選定 ............................................................................................................ 16 6 汽車底盤支架沖孔模具加工工藝 ...................................................................................... 17 模具零件組裝的問(wèn)題及其加工工藝過(guò)程 ................................................................... 17 沖孔凹模加工工藝過(guò)程 ....................................................................................... 18 沖孔凸模加工工藝過(guò)程 ....................................................................................... 19