目录
设计1
摘要4
ABSTRCT 6
序言1
1.1零件的作用2
1.2零件的工艺分析2
1.2.1.φ32mm孔为中心的加工表面2
1.2.2.以φ16mm孔为加工表面2
第二章:工艺规程设计4
2.1确定毛坯的制造形式4
2.2毛坯的设计4
2.3基面的选择6
2.4制定工艺路线7
2.5机械加工余量、工序尺寸及毛坯尺寸的确定10
2.5.1.钻32mm的孔10
2.6确定切削用量及基本工时10
2.6.2工序二:钻M8螺纹孔11
2.6.3工序三:攻螺纹M8mm: 12
三夹具设计13
3.1钻床的概述13
3.2问题的提出14
3.3定位基准的选择15
3.4定位方案的设计16
3.5夹紧方案的设计17
3.5.1典型夹紧结构17
3.5.2定心夹紧机构17
3.6切削力和夹紧力的计算18
3.7钻模板的选择19
3.8钻套的设计25
3.8定位误差分析29
总结31
致谢32
参考文献33
摘要
夹具是针对零件待加工结构的生产工具,在机床行业技术快速发展的影响下,对夹具的要求越来越高。
该设计任务是针对气门摇臂轴支座轴上的Ф16、Ф18两孔加工设计一套钻孔夹具。因该零件结构不规则,常用机床夹持附件无法实现工件的装夹和定位,且稳定性好,设计上采用简单结构,多采用标准件,夹具生产制造成本可控;采用快速夹紧机构,缩短更换零件和空机运行时间[1]。
该设计进行前根据零件图纸上的待加工孔的技术要求,根据所学的夹具设计的基本知识、设计方法,根据零件拟定适合的夹具;在保证两个孔加工尺寸和位置精度的前提下,正确的装夹、定位、锁紧;针对工件在装夹时需要定位准确、操作便捷,结构设计在保证夹具功能同时,也要考虑夹具零部件间相对运动操作要方便快捷。
确定钻床夹具的夹持和操纵结构后,用AutoCAD进行绘制夹具的各部位零件图和装配图,最后利用PRO/E完成夹具各零件的建模和三维装配。
关键词:钻孔夹具;CAD;PRO/E;定位精度;夹持力;
ABSTRCT
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nit clamp the desig
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nd the e
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nectio
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n produces, a
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nality a
nd the deficie
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nd will desig
n i
n later pays atte
ntio
n to the improveme
nt. Keywords: The craft, the worki
ng procedure, the cutti
ng specificatio
ns, clamp, the localizatio
n, the error 序言 机械制造业是制造具有一定形状位置和尺寸的零件和产品,并把它们装备成机械装备的行业。机械制造业的产品既可以直接供人们使用,也可以为其它行业的生产提供装备,社会上有着各种各样的机械或机械制造业的产品。我们的生活离不开制造业,因此制造业是国民经济发展的重要行业,是一个国家或地区发展的重要基础及有力支柱。从某中意义上讲,机械制造水平的高低是衡量一个国家国民经济综合实力和科学技术水平的重要指标。 推动架零件的加工工艺规程及其夹具设计是在学完了机械制图、机械制造技术基础、机械设计、机械工程材料等进行课程设计之后的下一个教学环节。正确地解决一个零件在加工中的定位,夹紧以及工艺路线安排,工艺尺寸确定等问题,并设计出专用夹具,保证零件的加工质量。本次设计也要培养自己的自学与创新能力。因此本次设计综合性和实践性强、涉及知识面广。所以在设计中既要注意基本概念、基本理论,又要注意生产实践的需要,只有将各种理论与生产实践相结合,才能很好的完成本次设计。
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n co
nte
nt has i
nvolved the machi
ne ma
nufacture craft a
nd the e
ngi
ne bed jig desig
n, the metal-cutti
ng machi
ne tool, the commo
n differe
nce coordi
natio
n a
nd the survey a
nd so o
n the various k
nowledge. The reductio
n gear box body compo
ne
nts tech
nological process a
nd its the processi
ng hole jig desig
n is i
ncludes the compo
ne
nts processi
ng the tech
nological desig
n, the worki
ng procedure desig
n as well as the u
nit clamp desig
n three parts. Must first carry o
n the a
nalysis i
n the tech
nological desig
n to the compo
ne
nts, u
nderstood the compo
ne
nts the craft redesig
ns the semi fi
nished materials the structure, a
nd chooses the good compo
ne
nts the processi
ng datum, desig
ns the compo
ne
nts the craft route; After that is carryi
ng o
n the size computatio
n to a compo
ne
nts each labor step of worki
ng procedure, the key is decides each worki
ng procedure the craft equipme
nt a
nd the cutti
ng specificatio
ns; The
n carries o
n the u
nit clamp the desig
n, the choice desig
ns the jig each compositio
n part, like locates the part, clamps the part, guides the part, to clamp co
ncrete a
nd the e
ngi
ne bed co
n
nectio
n part as well as other parts; Positio
n error which calculates the jig locates whe
n produces, a
nalyzes the jig structure the ratio
nality a
nd the deficie
ncy, a
nd will desig
n i
n later pays atte
ntio
n to the improveme
nt. Keywords: The craft, the worki
ng procedure, the cutti
ng specificatio
ns, clamp, the localizatio
n, the error 序言 机械制造业是制造具有一定形状位置和尺寸的零件和产品,并把它们装备成机械装备的行业。机械制造业的产品既可以直接供人们使用,也可以为其它行业的生产提供装备,社会上有着各种各样的机械或机械制造业的产品。我们的生活离不开制造业,因此制造业是国民经济发展的重要行业,是一个国家或地区发展的重要基础及有力支柱。从某中意义上讲,机械制造水平的高低是衡量一个国家国民经济综合实力和科学技术水平的重要指标。 推动架零件的加工工艺规程及其夹具设计是在学完了机械制图、机械制造技术基础、机械设计、机械工程材料等进行课程设计之后的下一个教学环节。正确地解决一个零件在加工中的定位,夹紧以及工艺路线安排,工艺尺寸确定等问题,并设计出专用夹具,保证零件的加工质量。本次设计也要培养自己的自学与创新能力。因此本次设计综合性和实践性强、涉及知识面广。所以在设计中既要注意基本概念、基本理论,又要注意生产实践的需要,只有将各种理论与生产实践相结合,才能很好的完成本次设计。
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