摘 要


連桿是汽車的心臟部分——發(fā)動機的關(guān)鍵零部件之一，它的運用極為廣泛，不僅在汽車行業(yè)中運用廣泛，也在摩托車等行業(yè)中運用廣泛。國內(nèi)外對連桿的研究如火如荼，連桿的需求數(shù)量和品質(zhì)要求都越來越高，因此研究連桿加工工藝具有十分重要的意義。
本設(shè)計的主要內(nèi)容包括連桿制造的工藝規(guī)程的制定，端面銑夾具的設(shè)計。在設(shè)計階段，需要查閱許多不同種類的各種資料、并將它們進行對比、查找計算公式，然后制定出最適當(dāng)?shù)倪B桿制造工藝方法，設(shè)計出所需專用夾具。雖然連桿的加工內(nèi)容本身并不復(fù)雜，但它的材質(zhì)、外形、及所要求的加工精度往往給加工帶來不少困難。在工藝路線的制定過程中，先制定兩種工藝路線方法，并對其進行對照，綜合，最后得出一條最為適合的加工工藝方法。本次設(shè)計在制定的工藝路線當(dāng)中，可設(shè)計專用夾具，以此提高生產(chǎn)效率，獲得更好的經(jīng)濟效益。


關(guān)鍵詞：連桿，加工工藝，夾具，設(shè)計



















ABSTRACT

The connecting rod is the heart of auto, and it is one of the most important parts of the engine. It’s used wildly not only in the automotive industry, but also in the motorcycles industry. Now, the study of the connecting rod both in China and abroad is developing quickly, the amount of the connecting rod is becoming larger and larger, their quality requirements are also increasingly demanding. So, the research of the connecting rod’s technology processing is of great significance.
The design of the main content includes making mill sheet designing the fixture of mill on plane. During the stage of design, lots of dates need to be fond in different kinds of books, and we need to compare them and find out the right formula, so that we can formulate the most appropriate method of connecting rod manufacturing process, and get the fixture of mill on plane. Although the processing of connecting rod is not so complicated, the demand of its texture, shape and its precision always brings the machining a lot of difficulties. In the process of making machining process, we make two ways first, and compare them, and then comprehensive application both ways, at last we make out one best method for the processing technology of connecting rod. In the processing technology, it is necessary to design the Special Fixture for the machining, so as to raise production efficiency and get a better economic return.


Key words： Connecting rod, processing technology, fixture, design












目 錄

中文摘要 Ⅰ
ABSTRACT Ⅱ
目錄 Ⅲ
緒論 V
1 對零件的分析 1
1.1 零件的作用和結(jié)構(gòu)特點 1
1.1.1 零件的作用 1
1.1.2 零件的結(jié)構(gòu)特點 1
1.2 零件的結(jié)構(gòu)工藝性 1
1.3 零件關(guān)鍵表面的技術(shù)要求分析 2
1.4 零件的工藝分析 2
2 選擇毛坯 5
2.1 確定零件生產(chǎn)類型 5
2.2 毛坯選擇和制造形式 5
2.3 確定零件毛坯外形機械加工余量及毛坯尺寸，設(shè)計毛坯——零件綜合圖 5
2.3.1 各加工余量的確定 5
2.3.2 加工余量的計算 6
3 工藝規(guī)程設(shè)計 8
3.1 定位基準(zhǔn)的選擇 5
3.2 零件表面加工方法的選擇 5
3.2.1 平面加工 5
3.2.2 孔的加工 5
3.2.3 斜槽的加工 9
3.3 制定工藝路線 5
3.4選擇切削用量、確定時間定額 12
3.4.1 磨削工序計算 12
3.4.2 銑削工序計算 14
3.4.3 鉆孔工序計算 14
3.4.4 鏜孔工序計算 18
3.5 填寫機械加工工藝規(guī)程何機械加工工序卡片 19
4 機床夾具定位夾緊方案設(shè)計 20
4.1 擬定夾具的結(jié)構(gòu)方案 20
4.2 確定工件的定位方案 20
4.3 確定工件的夾緊方式計算加緊力 20
4.4 確定刀具的導(dǎo)向方式或?qū)Φ堆b置 21
5 設(shè)計小結(jié) 22
參考文獻 23