夹具装配图——A1
摘要
某型导叶片机械加工工艺及其专用夹具设计，由老师发的任务书和某型导叶片零件图知，此设计大体分成两部分，一为工艺部分；二为夹具部分。
工艺部分主要包括零件的分析、毛坯余量的确定及工时计算等，详细查看某型导叶片知道，其材料为ZG1Cr13，Φ18h6外圆粗糙度Ra1.6，Φ20f7外圆粗糙度Ra1.6，叶片粗糙度Ra1.6，6N9键槽粗糙度Ra3.2，这些位置精度较高，其他的加工表面精度一般。再上网查了下叶片的资料，知道其或为散热零件，或为类似风扇叶的吹风配件。
我要设计的磨叶片夹具。这点对我真的非常难，翻阅了三四天的资料也没找到合适的定位和夹紧方案，后来在网上查看叶片资料，在几张关于叶片夹具装配图中得到启发，尽而设计出我的夹具方案：磨叶片夹具以Φ20f7外圆作为主定位面，叶片顶尖和键槽辅助定位，对应的定位元件为半圆弧定位块、衬套和定位销。
关键词：某型导叶片；工艺分析；专用夹具设计
Abstract
The machining process of a certain guide vane and its special fixture design are known from the task book issued by the teacher and the part drawing of a certain guide vane. This design is generally divided into two parts, one is the process part; The second part is the fixture part.
The process part mainly includes the analysis of parts, the determination of blank allowance and the calculation of working hours. Check a certain guide vane in detail and know that its material is zg1cr13, Φ 18h6 cylindrical roughness Ra1.6, Φ 20f7 excircle roughness Ra1.6, blade roughness Ra1.6, 6n9 keyway roughness ra3.2, these positions have high accuracy, and other machined surface accuracy is general. Then I checked the information of the lower blade on the Internet and found that it was either a heat dissipation part or a blowing accessory similar to the fan blade.
I want to design a fixture for grinding blades. This is really very difficult for me. After reading the information for three or four days, I didn't find a suitable positioning and clamping scheme. Later, I checked the blade information on the Internet and got inspiration from several assembly drawings of blade fixture, so I did my best to design my fixture scheme: grinding blade fixture to Φ The outer circle of 20f7 is used as the main positioning surface, and the blade center and keyway are used for auxiliary positioning. The corresponding positioning elements are semi-circular arc positioning block, bushing and positioning pin.
Key words: a certain type of guide vane; Process analysis; Special fixture design
目录
摘要1
Abstract 2
第1章绪论1
1.1机床夹具与生产技术准备1
1.2机床夹具与工件加工精度和质量2
第2章叶片零件分析2
2.1叶片零件的主要作用2
2.2工艺分析3
第3章工艺规程的设计4
3.1确定零件的生产类型4
3.2确定毛坯5
3.3基准的选择6
3.3.1精基准的选择原则6
3.3.2粗基准的选择原则6
3.4主要的加工工序的工艺路线安排7
3.4.1加工工序7
3.4.2热处理工序7
3.4.3辅助工序7
3.4.4确定工艺路线7
3.5加工设备与工艺设备的选择8
3.6切削用量9
第4章叶片磨床夹具设计31
4.1选择定位基准31
4.2确定夹具的结构以及夹紧机构的方案31
4.3设计整体夹具装配图31
4.4切削力的计算31
4.5分析与计算误差32
结论33
参考文献34
某型导叶片——A2
A三维工件图
半圆弧上盖——A4
半圆弧底座——A4
夹具体——A1
夹具设计部分
字数
定位销支座——A3
工序卡
摘要
支座——A3
某型导叶片毛坯图——A2
目录
设计所包含文件
过程卡
