氣門搖臂軸支座的機械加工工藝及夾具設計



摘要

機械加工行業(yè)作為一個傳統(tǒng)而富有活力的行業(yè)，近十幾年取得了突飛猛進的發(fā)展，在新經濟時代，行業(yè)呈現(xiàn)了新的發(fā)展趨勢，由此對其它的質量，性能要求有了新的變化?，F(xiàn)在機械加工行業(yè)發(fā)生著結構性變化，工藝工裝的設計與改良已成為企業(yè)生存和發(fā)展的必要條件，工藝工裝的設計與改良直接影響加工產品的質量與性能。

本文首先介紹了氣門搖臂軸支座的作用和工藝分析，其次確定毛坯尺寸，然后進行了工藝規(guī)程設計，最后進行夾具設計。此次設計是對氣門搖臂軸支座的加工工藝和夾具設計，其零件為鑄件，具有體積小，零件結構簡單的特點，由于面比孔易加工，在制定工藝規(guī)程時，就先加工面，再以面為基準來加工其它，其中各工序夾具都采用專用夾具，其機構設計簡單，方便且能滿足要求。

關鍵詞：氣門搖臂軸支座，工藝分析 ，工藝規(guī)程設計 ，夾具設計







The machining process and fixture design of the Valve Rocker Arm Bearing support



Abstract

Machining industry ,as a traditional and vibrant industry, has been rapidly developed for a few past decades. In the new economic area,the industry presented a new development trend,and the trends also changes the quality and the performance of the production in some new abstracts. Machining industry is now taking place in structural changes, process design and improvement of equipment has become the necessary conditions of the enterprise survival and development, process equipment design and improved products directly affect the quality and performance.

This article introduces the role and process analysis of the valve rocker arm bearing support,followed by determining blank size, and then proceed to order the design process, the final fixture design. What will be disgned is The machining process and fixture design of the Valve Rocker Arm Bearing support,which has the chatacteristics of three abstrcat.its components for castings, with a small size, simple structure and the characteristics of parts,because the surface is easier than the easy processing, point of order in the development process, the surface on the first processing , and then to surface as a benchmark to other processing, including the processes used special fixture, and its design is simple, convenient and can meet the requirements.



KEYWORDS: Valve rocker arm bearing support, process analysis, Process design, fixture design





目錄

中文摘要

英文摘要

1緒論..........................................................................................................................1

1.1 本設計的內容及意義……………………………………………….…..1

1.2 課題背景知識………………………………………………….…………1

1.2.1 零件的作用……………………………………………………………2

1.2.2柴油機相關知識介紹 2

1.2.3 機械制造工藝技術相關知識................................................................3

1.2.4 機床夾具設計基礎知識........................................................................4

2 氣門搖臂軸支座的機械制造工藝規(guī)程設計 9

2.1 零件的工藝分析及生產類型的確定 9

2.1.1零件的作用 9

2.1.2零件的工藝分析 9

2.1.3確定零件的生產類型 11

2.2 選擇毛坯，繪制毛坯圖 11

2.2.1選擇毛坯種類 11

2.2.2確定毛坯尺寸及機械加工總余量 12

2.2.3設計毛坯圖 13

2.2.4繪制毛坯圖...........................................................................................14

2.3 選擇加工方法，制定工藝路線 14

2.3.1定位基準的選擇 14

2.3.2零件表面加工方法的選擇 16

2.3.3加工階段的劃分 16

2.3.4工序的集中與分散 17

2.3.5工序順序的安排 17

2.3.6確定工藝路線 17

2.3.7加工設備及工藝裝備的選擇...............................................................19

2.3.8工序間余量的確定...............................................................................20

2.3.9切削余量及基本時間定額的確定 21

3 氣門搖臂軸支座專用夾具的設計...........................................................37

3.1確定夾具的結構方案 37

3.1.1確定定位方案，選擇定位元件............................................................ 37

3.1.2 確定導向裝置........................................................................................39

3.1.3確定夾緊機構.........................................................................................39

3.1.4確定輔助定位裝置.................................................................................40

3.2設計夾具體 40

3.3 夾具裝配圖上標注尺寸、配合及技術要求 40

總結 43

參考文獻 44

致謝 45

附件 46

附件A開題報告

附件B 英文翻譯及原文