设计简介
摘 要
本课题是对铰链零件进行机械加工工艺规程和夹具设计，设计钻孔的专用夹具，包括零件加工的工艺设计、工序设计以及专用夹具的设计三部分。在工艺设计中要首先对零件进行分析，了解零件的工艺再设计出毛坯的结构，并选择好零件的加工基准，设计出零件的工艺路线；接着对零件各个工步的工序进行尺寸计算，关键是决定出各个工序的工艺装备及切削用量；然后进行专用夹具的设计，选择设计出夹具的各个组成部件，如定位元件、夹紧元件、引导元件、夹具体与机床的连接部件以及其它部件；计算出夹具定位时产生的定位误差，分析夹具结构的合理性与不足之处，并在以后设计中注意改进。
关键词：铰链零件，工艺，工序，切削用量，夹紧，定位，误差
本课题是对铰链零件进行机械加工工艺规程和夹具设计，设计钻孔的专用夹具，包括零件加工的工艺设计、工序设计以及专用夹具的设计三部分。在工艺设计中要首先对零件进行分析，了解零件的工艺再设计出毛坯的结构，并选择好零件的加工基准，设计出零件的工艺路线；接着对零件各个工步的工序进行尺寸计算，关键是决定出各个工序的工艺装备及切削用量；然后进行专用夹具的设计，选择设计出夹具的各个组成部件，如定位元件、夹紧元件、引导元件、夹具体与机床的连接部件以及其它部件；计算出夹具定位时产生的定位误差，分析夹具结构的合理性与不足之处，并在以后设计中注意改进。
关键词：铰链零件，工艺，工序，切削用量，夹紧，定位，误差
Abstract
This task is the machining process planning and fixture design of parts, the design of special fixture M10 thread bottom hole drilling,, including machining process design and fixture three. In process design should first of all parts for analysis, to understand part of the process to design blank structure, and choose the good parts machining datum, design the process routes of the parts; then the parts of each step in the process to the size calculation, the key is to determine the craft equipment and the cutting dosage of each working procedure design; then the special fixture, the fixture for the various components of the design, such as the connecting part positioning devices, clamping element, a guide element, fixture and machine tools and other components; positioning error calculated by the analysis of fixture, jig structure the rationality and the deficiency, pay attention to improving and will design in.
Keywords:,process, cutting dosage, clamping, positioning
This task is the machining process planning and fixture design of parts, the design of special fixture M10 thread bottom hole drilling,, including machining process design and fixture three. In process design should first of all parts for analysis, to understand part of the process to design blank structure, and choose the good parts machining datum, design the process routes of the parts; then the parts of each step in the process to the size calculation, the key is to determine the craft equipment and the cutting dosage of each working procedure design; then the special fixture, the fixture for the various components of the design, such as the connecting part positioning devices, clamping element, a guide element, fixture and machine tools and other components; positioning error calculated by the analysis of fixture, jig structure the rationality and the deficiency, pay attention to improving and will design in.
Keywords:,process, cutting dosage, clamping, positioning
目录
一、铰链的工艺分析 1
1.1铰链的用途 1
1.2铰链的技术要求 2
1.3铰链的工艺分析 2
1.4确定铰链的生产类型 2
二、确定毛坯、绘制毛坯简图 3
2.1选择毛坯 3
2.2确定毛坯的尺寸公差和机械加工余量 3
三、拟定铰链工艺路线 4
3.1定位基准的选择 4
3.2表面加工方法的确定 5
3.3加工阶段的划分 5
3.4工序的集中与分散 6
3.5工序顺序的安排 6
3.6确定工艺路线 6
四、加工余量、工序尺寸、和公差的确定 8
4.1选择加工设备与工艺设备 8
4.2加工余量工序尺寸及公差的确定 9
五、切削用量、时间定额的计算 13
5.1粗精铣宽24mm，毛坯28mm，的下表面 13
5.2孔的加工 14
5.3 铣槽 19
5.4时间定额的计算 19
六、专用夹具设计 21
6.1设计要求 22
6.2夹具设计 22
6.2.1 定位基准的选择 22
6.2.2 切削力及夹紧力的计算 22
6.3定位误差的分析 25
6.4 钻套、衬套、钻模板设计与选用 26
6.5夹具设计及操作的简要说明 27
七 零件的数控编程 28
7.1 软件的选择 28
7.2 刀具路径的生成 28
7.3 初始参数设定 29
7.4 创建刀具 30
7.5 创建粗加工操作 30
7.6 创建半精加工操作 33
结 论 40
参考文献 41
致 谢 42
