摘 要

近年來(lái)，我國(guó)摩托車生產(chǎn)企業(yè)經(jīng)過(guò)技術(shù)的引進(jìn)、消化、吸收和創(chuàng)新，生產(chǎn)水平和管理水平取得了很大的發(fā)展。各生產(chǎn)企業(yè)在提高外觀、性能的同時(shí)，對(duì)發(fā)動(dòng)機(jī)關(guān)鍵零件的制造工藝更是不斷地進(jìn)行探索，以保證發(fā)動(dòng)機(jī)的高性能。
由于摩托車發(fā)動(dòng)機(jī)殼體零件是發(fā)動(dòng)機(jī)其他零件的安裝基準(zhǔn)，其加工質(zhì)量將直接影響發(fā)動(dòng)機(jī)的功率、油耗、噪聲等性能，其工藝規(guī)程及工藝設(shè)備的設(shè)計(jì)非常重要。
本次設(shè)計(jì)主要內(nèi)容包括：零件的分析、毛坯的材料及制造方式、工藝規(guī)程的設(shè)計(jì)和兩套夾具的設(shè)計(jì)，包含了摩托車殼體零件制造的全過(guò)程。
在第一章的零件分析中，主要分析了零件的功用結(jié)構(gòu)及分析了本零件的主要技術(shù)要求；第二章工藝規(guī)程設(shè)計(jì)的主要內(nèi)容有毛坯材料的選擇和毛坯制造方法的選擇；第三章的主要內(nèi)容是工藝規(guī)程的擬定、定位基準(zhǔn)、加工方法的選擇、加工階段的劃分等。通過(guò)方案的比較，確定最佳的工藝路線；第四章結(jié)合零件圖、毛坯圖，使用查表法確定工序加工余量、工序尺寸及公差，列出詳細(xì)的加工余量表，選取典型的工序進(jìn)行切削用量和工時(shí)定額的計(jì)算。第五章選擇兩道工序設(shè)計(jì)兩套專用夾具設(shè)計(jì)。


關(guān)鍵詞：零件分析，工藝規(guī)程，工藝路線，夾具















ABSTRACT

In recent years, the motorcycle manufacturing corporations of our country have obtained very great development in the level of production and management. Through introducing, digesting, absorbing of technology from abroad and innovating. So as to ensure the high performance of the engine, those corporations are exploring constantly even more to starting the manufacturing process of the key parts of engine while improving the appearance, and performance.
Because the motorcycle engine shell part is the installation matrices of the engine, its quality of processing will influence performance such as the power, oil consumption, noise of the engine directly, the designs of its rules of craft and craft apparatus are very important.
This Graduation Design mainly content to include: Analysis of the part, material and the designs of the manufacture of the blank of the part, the design of process route and the designs of two sets of fixtures, containing the whole manufacturing course of the motorcycle shell part.
In the part of chapter one the main analysis of the part analyzed the function structure and analyzing the main technical requirement for this part; the main contents of chapter two are designed as the choice of the blank material and choice of the manufacturing approach blank. In chapter 3, the main content is drafting, the choice of location datum and the preparation method, the division stage of the craft rules, etc. Through the comparison of the scheme, confirm the best craft route. Chapter four combine part drawing, blank drawing, use locating table way to confirm process processing surplus, process dimension and tolerance, list the detailed scale of processing, choose the typical process and carry on the calculation which cuts consumption and hour norm. Two processes are chosen to design two sets of special fixtures to be designed in chapter five.

Key words：analysis of the part, process route, technological procedure, fixture






目 錄

中文摘要 Ⅰ
ABSTRACT Ⅱ
1緒論 1
1.1 論文的目的和意義 1
1.2 課題研究的任務(wù) 1
1.3 論文的主要工作 2
2 零件分析 3
2.1 零件功用及結(jié)構(gòu)特點(diǎn) 3
2.2 零件的工藝分析 3
2.3 發(fā)動(dòng)機(jī)殼體加工過(guò)程常出現(xiàn)的問(wèn)題 8
3 毛坯的選型與制造 11
3.1 確定零件的生產(chǎn)綱領(lǐng) 11
3.2 零件材料的選擇 11
3.3 毛坯種類及制造方法的選擇 12
3.4 毛坯的設(shè)計(jì)及生產(chǎn) 15
4 箱體的機(jī)械加工工藝路線 19
4.1 定位基準(zhǔn)的選擇 19
4.2 加工方法的選擇 22
4.3 加工階段的劃分 24
4.4工序內(nèi)容的合理安排 24
4.5 加工順序的安排 25
4.6 擬定工藝路線 26
4.7 零件的檢驗(yàn) 30
5 工序具體內(nèi)容的確定 31
5.1 加工余量和工序尺寸的確定 31
5.2 工藝裝備的選擇 34
5.3 確定工序時(shí)間定額 36
6 夾具設(shè)計(jì) 41
6.1 夾具概述 41


6.2以高25mm臺(tái)階為基準(zhǔn)銑A面的專用夾具設(shè)計(jì) 42
6.3工序35：鏜ф75軸孔的專用夾具設(shè)計(jì) 42
7 總結(jié) 50
8 致謝 51
參考文獻(xiàn) 52