摘要
本次设计内容涉及了机械制造工艺及机床夹具设计、金属切削机床、公差配合与测量等多方面的知识。
三孔连杆加工工艺规程及钻Φ35H6孔夹具设计是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:三孔连杆,加工工艺,工装设计
ABSTRACT
This desig
n co
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nvolves the mecha
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nd fixture desig
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nd the desig
n of special fixture. I
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nalyze the parts, u
ndersta
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nd select the processi
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n the process route of the parts; the
n calculate the size of eachworki
ng step of the part, the key is to determi
ne the process equipme
nt a
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nt of each process; the
n, desig
n the special fixture, select a
nd desig
n the fixture The positio
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ng error is calculated, the ratio
nality a
nd deficie
ncy of the fixture structure are a
nalyzed, a
nd the improveme
nt i
n the future desig
n is paid atte
ntio
n to. Keywords: three hole co
n
necti
ng rod, processi
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nology, tooli
ng desig
n 目录 摘要1 ABSTRACT 2 1绪论1 2三孔连杆的设计2 2.1三孔连杆零件图2 2.2零件的工艺分析2 2.3毛坯的选择3 2.4选择毛坯时应考虑的因素3 2.5选择毛坯3 2.6确定毛坯的制造流程,确定毛坯的形状4 2.7确定毛坯的尺寸公差和机械加工余量[10] 5 2.8绘制锻件毛坯简图6 2.9机械加工工艺规程的制定6 2.10定位基准的选择6 2.10.1粗基准的选择7 2.10.2精基准的选择8 2.11零件表面加工方法的选择9 2.12加工顺序的安排10 2.12.1工序安排需遵循的原则10 2.12.2加工阶段的划分11 2.12.3工序顺序的安排11 2.12.4确定工艺路线12 2.13加工余量、工序尺寸的确定13 2.13.1加工余量与工序余量13 2.13.2加工余量与工序尺寸的确定13 2.14切削用量的确定、基本时间的计算14 2.14.1工序5 14 2.14.2工序6 16 2.14.3工序7 17 2.14.4工序11 18 2.14.5工序8和工序9 20 2.14.6工序12 21 2.14.7工序13 22 3工装设计23 3.1机床工艺装备的确定23 3.2机床设备的选择23 3.3工艺装备的选择23 3.3.1夹具的选择23 3.3.2刀具的选择24 3.3.3量具的选择24 3.4机床夹具的设计24 3.4.1本零件专用夹具的设计25 3.4.2问题的提出25 3.4.3钻小头孔夹具结构方案的确定25 3.4.4切削力和夹紧力的计算26 3.4.5夹具草图的绘制26 参考文献29 致谢30
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n co
nte
nt i
nvolves the mecha
nical ma
nufacturi
ng process a
nd fixture desig
n, metal cutti
ng machi
ne, tolera
nce a
nd measureme
nt a
nd other aspects of k
nowledge. The three hole co
n
necti
ng rod processi
ng process specificatio
n a
nd the fixture desig
n for drilli
ngΦ 35h6 hole i
nclude the process desig
n of parts processi
ng, process desig
n a
nd the desig
n of special fixture. I
n the process desig
n,we should first a
nalyze the parts, u
ndersta
nd the process of the parts, the
n desig
n the structure of the bla
nk, a
nd select the processi
ng be
nchmark of the parts, a
nd desig
n the process route of the parts; the
n calculate the size of eachworki
ng step of the part, the key is to determi
ne the process equipme
nt a
nd cutti
ng amou
nt of each process; the
n, desig
n the special fixture, select a
nd desig
n the fixture The positio
ni
ng error is calculated, the ratio
nality a
nd deficie
ncy of the fixture structure are a
nalyzed, a
nd the improveme
nt i
n the future desig
n is paid atte
ntio
n to. Keywords: three hole co
n
necti
ng rod, processi
ng tech
nology, tooli
ng desig
n 目录 摘要1 ABSTRACT 2 1绪论1 2三孔连杆的设计2 2.1三孔连杆零件图2 2.2零件的工艺分析2 2.3毛坯的选择3 2.4选择毛坯时应考虑的因素3 2.5选择毛坯3 2.6确定毛坯的制造流程,确定毛坯的形状4 2.7确定毛坯的尺寸公差和机械加工余量[10] 5 2.8绘制锻件毛坯简图6 2.9机械加工工艺规程的制定6 2.10定位基准的选择6 2.10.1粗基准的选择7 2.10.2精基准的选择8 2.11零件表面加工方法的选择9 2.12加工顺序的安排10 2.12.1工序安排需遵循的原则10 2.12.2加工阶段的划分11 2.12.3工序顺序的安排11 2.12.4确定工艺路线12 2.13加工余量、工序尺寸的确定13 2.13.1加工余量与工序余量13 2.13.2加工余量与工序尺寸的确定13 2.14切削用量的确定、基本时间的计算14 2.14.1工序5 14 2.14.2工序6 16 2.14.3工序7 17 2.14.4工序11 18 2.14.5工序8和工序9 20 2.14.6工序12 21 2.14.7工序13 22 3工装设计23 3.1机床工艺装备的确定23 3.2机床设备的选择23 3.3工艺装备的选择23 3.3.1夹具的选择23 3.3.2刀具的选择24 3.3.3量具的选择24 3.4机床夹具的设计24 3.4.1本零件专用夹具的设计25 3.4.2问题的提出25 3.4.3钻小头孔夹具结构方案的确定25 3.4.4切削力和夹紧力的计算26 3.4.5夹具草图的绘制26 参考文献29 致谢30
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