机械5

风力发电机导流罩打孔装置设计 摘要 风力发电机导流罩是指风机轮毂的外保护罩，由于在风机迎风状态下，气流会依照导流罩的流线型均匀分流，故称导流罩。也称为轮毂罩、轮毂帽等。绝大部分风机的导流罩是玻璃钢材料制作，多采用真空导入模塑（VARTM）、LightRTM、手煳成型的方法成型制造。 轮毂罩的结构一般分为整体型导流罩、分体型导流罩两大类。常见的分体型导流罩是由3个1/3罩体部件和一个罩头部件用机械连接的方法拼合而成。分体型导流罩的优点是：模具简单，操作相对容易，拼装灵活。整体型导流罩必须在组合模具中一次整体成型出来，对模具的要求较高，对工艺的操作要求也较高，所以并不常见。 也有非玻璃钢材质的风力发电机导流罩，如铝合金导流罩等，欧洲的风机制造商选用的较多，其他国家和地区的风力发电机并不常见。 本设计首先介绍了夹具设计的基本原则，其中阐述了夹具在机械加工时的重要作用，重点介绍了了定位器和夹紧器的设计要求和设计方法，为后面作设计奠定了基矗 关键词发电机导流罩；夹具；定位；夹紧 Abstract Wi
nd turbi
ne fa
n shroud mea
ns hub outer protective cover, due to thewi
nd turbi
ne i
n the state, the airwill follow a streamli
ned shroud split eve
nly, so that shroud. Also k
now
n as hubcaps,wheel caps. Most of the fa
n shroud is a fiberglass material, the use ofvacuum i
nfusio
n moldi
ng(VARTM), LightRTM, ha
nd lay-up moldi
ng ma
nufacturi
ng methods. Hubcaps mo
nolithic structure is ge
nerally divided i
nto the shroud, the shroud body divided i
nto two categories. Commo
n sub-body shroud is a 3 1/3 cover body parts a
nd a head cover parts put together by the method of mecha
nical co
n
nectio
n. Adva
ntages of sub-body shroud is: simple mold, the operatio
n is relatively easy, flexible assembly. I
ntegral shroud must be a combi
natio
n of the overall shape of the mold out of the mold of the higher requireme
nts, the process of operati
ng requireme
nts are also higher, so itwas
not commo
n. There is also a
no
n-fiberglasswi
nd turbi
ne shroud material, such as alumi
num shroud, etc.,wi
nd turbi
ne ma
nufacturers i
n Europe are more choice, other cou
ntries a
nd regio
ns,wi
nd turbi
nes are
not commo
n. This desig
n i
ntroduces the basic pri
nciples of the desig
n of the fixture,which describes the importa
nt role duri
ng machi
ni
ng fixtures, highlighti
ng the locator a
nd clamp desig
n requireme
nts a
nd desig
n methods for the desig
n of the back of the fou
ndatio
n. Keywords ge
nerator shroud; jig; positio
ni
ng; clampi
ng 目录 摘要II Abstract III 第1章绪论1 1.1夹具设计背景2 1.2夹具的发展情况2 第2章夹具的设计原则4 2.1夹具的分类与组成4 2.1.1装配—机械加工夹具的分类4 2.1.2机械加工夹具的组成4 2.1.3机械加工夹具的作用5 2.2定位器设计5 2.2.1定位的基本原理5 2.2.2定位方案应满足的要求6 2.2.3定位方法和误差分析6 2.3夹紧器设计6 2.3.1夹紧装置的要求6 2.3.2夹紧力的确定7 第3章风力发电机导流罩总体方案设计8 第4章打孔装置夹具设计10 4.1定位方案确定10 4.2夹紧器设计10 4.3第二工位夹具设计13 4.3.1第二工位总体布局方案13 4.3.2定位方案设计14 4.3.3夹紧器设计14 4.4第三工位夹具设计17 4.5第四工位夹具设计17 第5章典型零件工艺设计20 总结21 致谢22 参考文献24