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摘 要
本次畢業(yè)設(shè)計(jì)的題目是CA141左轉(zhuǎn)向節(jié)規(guī)程及工裝設(shè)計(jì)。我主要需要完成的包括加工工藝的安排以及兩種專用機(jī)床夾具設(shè)計(jì)。為了保證加工零件的精度同時(shí)節(jié)約成本和縮短加工周期以及提高加工效率，那么一個(gè)良好的工藝安排以及專用夾具的設(shè)計(jì)就是必不可少的了。在工藝的安排上不但要考慮合理的加工要求還要考慮到操作者以及加工機(jī)械的安全。同時(shí)夾具的設(shè)計(jì)上也要考慮到使用的安全性和經(jīng)濟(jì)性以及安裝和拆卸上的方便性。設(shè)計(jì)一個(gè)良好的工藝工裝安排路線那么必須要經(jīng)過對(duì)加工件的詳細(xì)分析以及周密的考慮后才能得出。所以分析問題是解決問題的關(guān)鍵，同時(shí)還要反復(fù)的調(diào)整，來尋求最好的一個(gè)路線。這樣才能讓工藝路線更加的完美，才能保證工件的加工精度和加工效率以及節(jié)約材料。
關(guān)鍵詞 轉(zhuǎn)向節(jié)；加工工藝；專用夾具；加工精度；工藝路線
Abstract
The graduation design is the subject of CA141 car’s left steering process tooling. I mainly need to complete including Processing craft arrangement as well as special-purpose drill jig design.
In order to guarantee the processing components the precision Simultaneously saves cost and the reduction processing cycle as well as the enhancement processing efficiency, Then a good craft arrangement as well as unit clamp's design was essential. Not only in the craft arrangement must consider that the reasonable processing request also needs to consider the operator as well as processes machinery's security. Simultaneously jig's design also needs to consider the use in secure and efficient as well as the installment and the disassemblage conveniences. Designs a good craft work clothes arrangement route that to probably pass through to the job multianalysis,After as well as thorough consideration, can obtain. Therefore the analysis question solves the question key, meanwhile must the repeated adjustment, Seeks a best route. Seeks a best route to be able to let craft route even more perfect like this, can guarantee that the work piece the working accuracy and the processing efficiency as well as save the material.
Key word Steering ; Processing craft; Unit clamp; Working accuracy ; Craft route
目 錄
摘要 ……………………………………………………………………………………… Ⅰ
Abstract ………………………………………………………………………………… Ⅱ
緒論 ……………………………………………………………………………………… 1
1 零件的分析 …………………………………………………………………………… 2
1.1 零件的作用 …………………………………………………………………………… 2
1.2 零件的工藝分析 ……………………………………………………………………… 3
1.2.1 軸頸部分 …………………………………………………………………………… 3
1.2.2 法蘭部分 …………………………………………………………………………… 4
1.2.3 叉架部分 …………………………………………………………………………… 4
1.2.4位置精度要求 ……………………………………………………………………… 4
2 工藝規(guī)程設(shè)計(jì) ………………………………………………………………………… 6
2.1 確定毛坯的制造形式 ……………………………………………………………… 6
2.2 基面的選擇 ………………………………………………………………………… 6
2.2.1 定位基準(zhǔn)的選擇 …………………………………………………………………… 6
2.2.2 粗基準(zhǔn)的選擇 ……………………………………………………………………… 6
2.2.6 精基準(zhǔn)的選擇 ……………………………………………………………………… 7
2.3 工藝規(guī)程的設(shè)計(jì)原則 ………………………………………………………………… 7
2.4 制定工藝路線 ………………………………………………………………………… 8
2.5 機(jī)械加工余量、工序尺寸及毛坯尺寸的確定 ………………………………………12
2.6 確定切削用量及基本工時(shí) …………………………………………………………15
3 夾具設(shè)計(jì) …………………………………………………………………………… 31
3.1 拉床專用夾具設(shè)計(jì) ………………………………………………………………… 31
3.1.1 問題的提出 ……………………………………………………………………… 31
3.1.2 夾具設(shè)計(jì) ………………………………………………………………………… 31
3.2 鉆模夾具設(shè)計(jì) ……………………………………………………………………… 33
3.2.1 問題的提出 ……………………………………………………………………… 33
3.2.2 夾具設(shè)計(jì) ………………………………………………………………………… 33
總結(jié) ……………………………………………………………………………………… 37
致謝 ……………………………………………………………………………………… 38
參考文獻(xiàn) ………………………………………………………………………………… 39