A-5-阀盖零件图A4
阀盖的机械加工工艺规程及4-Ф14孔专用夹具设计
摘要
本文选择了阀盖作为研究对象，阀盖的种类很多，用途也很广。阀盖的一端可以是封闭的，用于变速箱用于变速箱主轴侧面，阻止外界灰尘进入箱体内，也可用于固定轴承，起到轴向定位的作用。
本文主要研究内容是阀盖的机械加工工艺规程及专用夹具设计。制定了加工阀盖的机械加工工艺路线，详细计算了加工余量、切削用量、尺寸公差，确定各工序尺寸、工序加工余量、加工工时、机械加工三要素等，选择其加工设备。通过本设计掌握零件的加工过程分析、工艺卡片的编制和步骤。学会应用手册、标准、规范等资料。认识到工艺在机械制造中的重要性。了解刀具的选用规则，产品质量、精度、寿命等属性和节约材料，降低成本，最重要的是提高生产效率。
设计加工钻削4-Ф14通孔钻床专用夹具，设计内容有：定位方案和夹紧方案的确定，定位元件和夹紧元件的选择，夹具体的设计，钻削力的计算等等。
关键词：阀盖、工艺规程、专用夹具、4-Ф14通孔、钻床
Abstract
In this paper, thevalve cover has been chosen as the research object. Thevalve cover has many kinds and useswidely. One end of thevalve cover may be enclosed for use in the transmission on the side of the main shaft, preventing dust from entering the box body, or for fixing the bearing to play an axial positioning role.
The main content of this paper is the machining process and special fixture design of the bonnet. The machining process route ofvalve cover isworked out. The machining allowance, cutting parameters and dimensional tolerance are calculated in detail. Theworking procedure dimensions,working procedure machining allowance,working hours and machining elements are determined, and the machining equipment is selected. Through this design,we can grasp the process analysis of parts, the compilation and steps of process cards. Learn application manuals, standards, specifications and other information. Recognize the importance of technology in machine manufacturing. Knowing the rules of tool selection, product quality, precision, life and other attributes and saving materials, reducing costs, the most important thing is to improve production efficiency.
The special fixture for drilling 4-14 through hole drilling machine is designed and manufactured. The design contents include the determination of positioning scheme and clamping scheme, the selection of positioning elements and clamping elements, the design of fixture body, the calculation of drilling force and so on.
Keywordsvalve cover, process specification, special fixture, 4- 14 hole and drilling machine
目录
摘要I
Abstract II
第1章绪论1
1.1机加工工艺规程及机床夹具的概述1
1.2机床夹具的研究现状2
1.3机床夹具的发展方向2
第2章阀盖机械加工工艺规程设计4
2.1零件的作用、设计基准及技术要求4
2.1.1零件的作用4
2.1.2零件的设计基准4
2.1.3零件的表面构成4
2.2零件加工表面的分析5
2.3零件的机械加工工艺性、材质及热处理要求5
2.3.1零件的机械加工工艺性5
2.3.2零件的材质5
2.4基准的选择及加工方案的选择与确定6
2.4.1基准的选择6
2.4.2加工方案的选择比较与确定7
2.5毛坯尺寸及加工余量的确定8
2.5.1毛坯尺寸的确定8
2.5.2加工余量的确定9
2.6机械加工机床、刀具及量具的选择11
2.7确定切削用量及基本工时11
第3章钻4-Ф14通孔专用夹具设计21
3.1定位方案及定位元件的确定与选择21
3.1.1设计定位方案应满足的要求21
3.1.2定位方案的确定21
3.1.3定位元件的选择21
3.2夹紧方案及装置的确定与选择22
3.2.1设计夹紧装置应遵循的原则22
3.2.2夹紧装置满足的基本要求23
3.2.3夹紧方案的确定23
3.2.4夹紧元件的选择23
3.3夹具体的确定24
3.3.1夹具体的设计要求24
3.3.2夹具体制造形式的确定24
3.4导向装置的确定25
3.5钻削力的计算28
3.6夹紧力的计算28
3.7定位误差的计算29
结论30
致谢31
参考文献32
A-6-夹具装配图A0
A-3-夹具体A2
A-4-阀盖毛坯图A4
A-1-字数统计
A-2-所包含文件预览
加工余量的确定
零件的作用、设计基准及技术要求
夹具设计部分
工序卡
计算部分预览
说明书前三页
