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摘 要
凸輪軸是汽車發(fā)動(dòng)機(jī)空氣分布機(jī)構(gòu)的關(guān)鍵部件,其性能直接影響整個(gè)發(fā)動(dòng)機(jī)的性能。凸輪軸的加工工藝有特殊要求,合理處理技術(shù)降低處理成本,減少和合理布置凸輪軸生產(chǎn)線具有重要的現(xiàn)實(shí)意義。摘要凸輪軸的加工特點(diǎn),結(jié)合工廠的實(shí)際情況,從早期的規(guī)劃、凸輪軸的加工過程進(jìn)行了深入分析和研究。沒有與數(shù)控建立建模方法。計(jì)算和拆除,凸輪廓形凸輪輪廓處理本文討論和適用于發(fā)動(dòng)機(jī)凸輪軸加工方法被提出。
我的畢業(yè)設(shè)計(jì)主題是凸輪軸過程工具,凸輪軸上的工作要求,部分精度較高,如軸油孔處理,法蘭孔加工等等。凸輪軸的過程中,我們?cè)噲D弄清楚,的基礎(chǔ)上保證表達(dá)清楚,盡量簡潔,在我的設(shè)計(jì)中,加強(qiáng)了專業(yè)機(jī)械制造專業(yè)知識(shí),學(xué)習(xí)機(jī)械加工過程中,夾具設(shè)計(jì)、金屬切削原理和刀具和金屬切削機(jī)床。因此,我們?cè)O(shè)計(jì)了兩套鉆模的設(shè)計(jì)一些機(jī)構(gòu),比如劃分機(jī)制,機(jī)構(gòu)和液壓傳動(dòng)機(jī)制,等等,并借機(jī)器尾座,如大車輪,有利于處理,節(jié)省了大量的能量。其中,夾具設(shè)計(jì),確保加工表面的位置精度可以減少輔助時(shí)間,提高勞動(dòng)生產(chǎn)率,擴(kuò)大機(jī)床的使用范圍,實(shí)現(xiàn)工件的夾緊過程和降低勞動(dòng)強(qiáng)度,改善工作條件,確保安全生產(chǎn)。設(shè)計(jì),因?yàn)槲业乃接邢?難免會(huì)出現(xiàn)錯(cuò)誤,希望讀者評(píng)論。
關(guān)鍵詞:凸輪軸;鉆床夾具;分度機(jī)構(gòu);液壓傳動(dòng)機(jī)構(gòu);發(fā)動(dòng)機(jī);工藝分析
Abstract
The camshaft is the key components of automobile engine air distribution mechanism, its performance directly affects the whole engine performance. The processing technology of the camshaft have special requirements, reasonable processing technology to reduce processing costs, reduce and reasonable decorate the camshaft production line has important practical significance. Processing characteristics of the CAM shaft, combined with the actual situation of the factory, from the early planning, camshaft machining process is carried on the thorough analysis and research. Not a modeling method with numerical control. Calculation and removal, convex contour CAM contour processing in this paper, we discuss and is suitable for the engine camshaft processing method was put forward.
My graduation design theme is the camshaft process tool, the work requirements of camshaft, part of the high precision, such as shaft oil hole processing, the flange hole processing and so on. In the process of the camshaft, we try to find out, on the basis of the guarantee clear, concise, as far as possible in the design of I, to strengthen the professional machinery manufacturing professional knowledge, learning in the process of machining, fixture design, principles of metal cutting and cutting tools and metal cutting machine tool. As a result, we have designed two sets of jig design some institutions, such as division of mechanism, institution and hydraulic transmission mechanism, and so on, and borrow machine tailstock, such as the big wheel, is advantageous to the processing, saves a lot of energy. Among them, the fixture design, ensure the position precision of the machined surface can reduce the auxiliary time, improve labor productivity, expand the use of the machine tool, the implementation of workpiece clamping process and reduce the labor intensity, improve working conditions, to ensure safety in production. Design, because my level is limited, hard to avoid can appear error, hope the reader comments.
Keyword: The camshaft. Drill jig; Dividing mechanism; Hydraulic transmission mechanism; The engine; Technology analysis
目錄
引言
第一章 零件的功用與結(jié)構(gòu)分析 1
1.1 零件的功用 1
1.2 凸輪軸的結(jié)構(gòu)特點(diǎn)和技術(shù)要求 1
1.2.1 各種凸輪軸的技術(shù)要求 1
1.2.2 以發(fā)動(dòng)機(jī)該凸輪軸為例具體說明 1
第二章 生產(chǎn)類型的確定 2
第三章 確定毛坯的種類 4
第四章 機(jī)械加工工藝路線的擬定 5
4.1 加工工藝路線的分析 5
4.1.1 凸輪加工工藝分析 6
4.1.2 加工階段的劃分與工序順序的安排 6
4.1.3 加工工藝路線的擬定 6
4.2 工藝方案比較與分析 8
第五章 確定機(jī)械加工余量 工序尺寸及公差 9
第六章 確定切削用量 工件定額切削力及功率 10
6.1 鉆孔 10
6.2 擴(kuò)孔 10
第七章 夾具的設(shè)計(jì) 12
7.1 法蘭盤孔的夾具設(shè)計(jì) 12
7.1.1 工件的加工工藝性分析 12
7.1.1.1、工件屬于軸類零件,結(jié)構(gòu)形式簡單 12
7.1.1.2、確定定位方案,設(shè)計(jì)定位元件 13
7.1.1.3、確定設(shè)計(jì)導(dǎo)向元件 13
7.1.1.4、確定夾緊方式和設(shè)計(jì)夾緊機(jī)構(gòu) 14
7.1.1.5、確定夾具體 15
7.1.2 夾具體部件設(shè)計(jì)分析 15
7.1.2.1、頂尖部分設(shè)計(jì) 15
7.1.2.2、齒條傳動(dòng)部分設(shè)計(jì) 15
7.1.2.3、液壓缸設(shè)計(jì) 15
7.2 繪制夾具裝配圖 16
7.2.1、確定并標(biāo)注有關(guān)尺寸 16
7.2.2、與安裝有關(guān)的技術(shù)要求 16
7.3.3、零件圖的技術(shù)要求的定制 16
7.3 夾具體的設(shè)計(jì)步驟 17
7.3.1、研究原始資料,明確設(shè)計(jì)任務(wù) 17
7.3.2、對(duì)工件加工工藝的分析 17
7.3.3、夾具設(shè)計(jì)方案的設(shè)計(jì) 18
7.7.4、加工精度的分析 18
第八章 量規(guī)的設(shè)計(jì) 20
第九章 刀具的設(shè)計(jì) 21
9.1 鉸刀的直徑D及直徑公差 21
9.2 鉸刀的齒數(shù)及槽數(shù) 21
9.3 鉸刀的幾何角度 21
9.4 工作部分的尺寸 22
9.5 鉸刀非加工部分的結(jié)構(gòu)尺寸 22
第十章 CAD繪圖簡單說明 23
結(jié)論 24
參考文獻(xiàn) 25
致謝 26