【正文】 陜西工業(yè)職業(yè)技術(shù)學(xué)院 畢業(yè)設(shè)計(jì)說明書 設(shè)計(jì)（論文）題目： 典型零件的數(shù)控加工工藝設(shè)計(jì) 題目下達(dá)日期： 2020 年 11 月 5 日 開 始 日 期： 2020 年 12 月 3 日 完 成 日 期： 2020 年 1 月 8 日 指 導(dǎo) 教 師： 袁 偉 專 業(yè)： 數(shù)控技術(shù) 班 級(jí)： 1004 學(xué) 生 姓 名： 王凱 數(shù)控工程學(xué)院 I 摘 要 機(jī)械制造工藝是機(jī)械工業(yè)的基礎(chǔ)，是機(jī)械產(chǎn)品的生產(chǎn)的基本技術(shù)，工藝工作是每一個(gè)機(jī)械企業(yè)基本的活動(dòng)內(nèi)容，加強(qiáng)工藝技術(shù)研究，提高工藝水平，搞好工藝管理是提高機(jī)械產(chǎn)品質(zhì)量，降低消耗的根本措施。隨著科技的進(jìn)步機(jī)械制造業(yè)也日新月異的變化著，對(duì)機(jī)械產(chǎn)品的要求也日趨嚴(yán)格，特別是在加工精度方面，為了保證產(chǎn)品的精度誤差必須協(xié)調(diào)產(chǎn)品加工中的每一個(gè)方面，因?yàn)槿我环矫娴恼`差累積起來，將對(duì)產(chǎn)品的精度產(chǎn)生間接的影響。制造業(yè)中尤其是機(jī)械制造業(yè)，在產(chǎn)品生產(chǎn)過 程中按照特定工藝，不論其產(chǎn)生規(guī)模如何，都需要種類繁多的的工藝裝備，而制造業(yè)產(chǎn)品的質(zhì)量、生產(chǎn)率、成本無不與工藝裝備有關(guān)。隨著不規(guī)則形狀零件在現(xiàn)代制造業(yè)中的廣泛應(yīng)用，如何保證這類零件的加工精度就顯得尤為重要。 本設(shè)計(jì)從數(shù)控加工前應(yīng)做的準(zhǔn)備開始到數(shù)控加工工藝分析、 數(shù)控刀具及其選 擇、工件裝夾方式與數(shù)控加工夾具的選擇、程序編制等內(nèi)容以及數(shù)控加工時(shí)應(yīng)注 意的問題做了一一的說明。 關(guān)鍵詞 ：數(shù)控機(jī)床 ，工藝設(shè)計(jì)，程序編制，加工精度 II ABSTRACT Mechanical manufacturing process is the basis of the machinery industry is the basic technology for the production of mechanical products, craft work is the basic activities of each machinery enterprises and technology research to improve the level of technology, improve process management is to improve the quality of mechanical products, reduce consumption of the fundamental measures. With the advancement of technology machinery manufacturing, rapid changes, are being increasingly stringent requirements for machinery products, especially in the machining accuracy must be coordinated in every aspect of the product processing, in order to ensure the accuracy error, because any one hand cumulative error, and the accuracy of the product will be an indirect impact. Manufacturing, especially in the machinery manufacturing industry, in accordance with the specific process in the production process, irrespective of their produce scale requires a wide range of technology and equipment, while manufacturing the product quality, productivity, and cost are all related to the process equipment. With the irregular shape of the parts widely used in modern manufacturing, how to ensure that this type of III machining accuracy is particularly important. Ready to begin the design should be done from the CNC machining CNC machining process analysis, CNC tool selection, should pay attention to the content and CNC machining with CNC machining of the workpiece clamping fixture selection, programming the eleveninstructions. KEYWORDS: CNC machine tools, process design, programming, machining precision I 目錄 第一章 零件的加工工藝分析 ........................................... 1 零件圖的工藝分析 ........................................... 1 分析零件圖紙中的尺寸 ....................................... 1 零件的結(jié)構(gòu)工藝性分析 ....................................... 2 零件毛坯的選擇 ............................................. 3 零件的安裝 ................................................. 3 第二章 數(shù)控加工工藝方案的制定 ....................................... 4 工序與工步的劃分 ........................................... 4 加工機(jī)床的選擇 ............................................. 4 刀具的選擇 ................................................. 5 量具的選擇 ................................................. 7 夾具的選擇 ................................................. 7 冷卻液的選擇 ............................................... 8 第三章 切 削用量的選擇 .............................................. 10 切削用量的選擇原則 ........................................ 10 背吃刀量的選擇 ............................................ 10 確定主軸轉(zhuǎn)速 .............................................. 11 進(jìn)給量或進(jìn)給速度的選擇 .................................... 12 第四章 數(shù)控加工工藝過程卡片 ........................................ 13 確定加工路線 .............................................. 13 數(shù)控加工工藝過程卡片 ...................................... 14 刀具卡 .................................................... 15 編寫程序數(shù)控加工程序 ...................................... 15 第五章 實(shí)體造型與 CAM 圖 ............................................ 23 建模概念 .......................................... 23 建模步驟 ..............................................