设计描述：

文档包括:
word说明书一份，共46页，约21000字
任务书一份
开题报告一份
外文翻译一份

CAD版本图纸，共9张

摘  要
     零件的加工工艺编制，在机械加工中有非常重要的地位，零件工艺编制的合不合理，这直接关系到零件最终能否达到质量要求；夹具的设计也是不可缺少的一部分，它关系到能否提高其加工效率的问题，因此这两者在机械加工行业中是至关重要的环节。
本次设计的主要内容包括M3400调温器工艺规程设计和系列夹具设计的两大方面。制定工艺规程设计的原始资料包括：零件图样及必须的装配图样，产品验收的质量标准，产品的年生产纲领和生产类型、毛坯图样等。制定工艺规程设计步骤如下：审查零件图样，对零件进行工艺分析，选择零件的毛坯、绘制毛坯图，工艺过程设计（包括定位基准的选择，零件表面加工方法的选择，加工顺序的安排，工序的组合），工序设计（包括机床设备及工装选择，工序间加工余量的确定，工序尺寸及公差的确定、切削用量的选择，时间定额的确定），技术经济分析，填写工艺文件。夹具设计必须满足的要求有：保证加工精度，夹具的总体方案应与年生产纲领相适应，安全、方便、减轻劳动强度，排屑顺畅，具有良好的强度、刚度和结构工艺性。夹具设计包括工件的定位，定位误差的分析与计算，夹紧机构的确定，夹具力的确定（包括方向，作用点和大小）。
    
    关键词：工艺；夹具；加工精度；定位误差
 
Abstract

    The part treating handicraft establishment, occupies very important position in machine work, part handicraft weaves such that this is related to ultimate being able to reach a quality requirement or not of part whether rationally or not, directly; The clamp design is also an essential part, the problem whether can improve whose treating efficiency it is related to. This both are an-important links therefore in machine work industry.
The design of the main content includes M3400 thermostat process planning and design of fixture design series two aspects. Make the process planning original material including: pattern and the assembly parts must be pattern, the product quality acceptance of the standard, the product in the production program and production type, blank design, etc. For process planning design procedure is as follows: review parts design, analysis of the technology of parts, choose the blank, draw a blank parts graph, process design (including the locating datum, the selection of parts the selection of surface machining method, processing order the arrangement, the process of combination), process design (including machine tool equipment and fixtures choice, between the machining allowance process to determine the size, tolerance, process of sure, and selection of cutting parameter, time to determine the norm), technical and economic analysis, fill in process documents. Fixture design must meet the requirements for: ensure machining precision and the overall scheme of the fixture should be and years production program ADAPTS, safe, convenient, reduce labor intensity, scraps discharge smoothly, with good strength, stiffness and structure technology. Fixture design includes also the positioning, positioning error analysis and calculation, the determination of clamping institutions, fixture to determine the force (including direction, role of and size).
It is the English translation of the Chinese abstract.

Key words: handicraft; clamp; machining precision; position error

目  录
摘  要 III
ABSTRACT IV
目  录 V
1 绪论 1
1.1 本课题研究的内容及意义 1
1.2 国内外发展情况 1
1.3 本课题应达到的要求 2
2 零件的分析 3
2.1 零件的作用 3
2.2 零件的工艺分析 3
3 工艺规程设计 4
3.1 确定毛坯的制造形式 4
3.2 定位基准的选择 4
3.3 拟定工艺路线 5
3.4 机械加工余量、工序尺寸及毛坯尺寸的确定 7
3.5 确定切削用量及基本工时 7
3.5.1 车上端面工艺计算 7
3.5.2 车左端面工艺计算 9
3.5.3 车Φ38端面、外圆及倒角 11
3.5.4 铣Φ22端面工艺计算 12
3.5.5 钻上端面Φ8的孔 14
3.5.6 钻左端面Φ8的孔 16
3.5.7 钻Φ12的孔 17
4 专用夹具设计 18
4.1 机床夹具设计概述 18
4.1.1 机床夹具概述 18
4.1.2 机床夹具的分类 18
4.1.3 机床夹具的组成和功用 18
4.1.4 夹具总体方案设计 19
4.2 夹具设计 20
4.2.1 问题的提出 20
4.2.2 定位方式与定位基准的选择 20
4.2.3 夹具机构设计 20
4.2.4 定位销长度的分析 21
4.2.5 定位误差的分析与计算 22
4.2.6 夹紧装置的确定 26
4.2.7 夹紧力的确定 26
5 结论与展望 28
5.1 结论 28
5.2 不足之处与未来展望 28
致  谢 29
参考文献 30
附  录 31