CN107866986B - 制造支柱的方法以及由此形成的支柱 - Google Patents
制造支柱的方法以及由此形成的支柱 Download PDFInfo
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Abstract
一种制造具有中空中心孔的支柱的方法,包括以下步骤:提供心轴和一定量的丝线或纤维材料;围绕心轴铺设丝线或纤维材料以形成支柱,其具有大致圆柱形的中心部分、两个相对的连接端部、延伸穿过支柱的中心孔,所述中心孔具有延伸穿过每个端部的两个直径减小的部分和中心地延伸穿过所述孔的轴线;形成至少一个槽,其从所述连接端部之一的外端向内延伸并终止于该一个连接端部或所述中心部分内;沿着所述槽弯曲所述一个连接部的至少一部分,以便在所述至少一个端部扩大所述孔的直径减小的部分;以及使心轴大致沿着中心轴线移动并且通过扩大的孔端部,直到心轴从支柱孔中移除。
Description
技术领域
本发明涉及支柱,更具体地涉及在航空航天结构中使用的支柱。
背景技术
航空航天支柱是已知的,并且通常包括具有与机身连接的相对端的圆柱体。这些支柱通常支撑主要在张紧和压缩中的负载。一些航空航天支柱已经由诸如纤维和树脂的复合材料形成。
发明内容
一方面,本发明提供了一种制造具有中空中心孔的支柱的方法,所述方法包括以下步骤:提供心轴和一定量的丝线或纤维材料;围绕心轴铺设丝线或纤维材料以形成支柱,其具有大致圆柱形的中心部分、两个相对的连接端部、延伸穿过支柱的中心孔,所述中心孔具有延伸穿过每个端部的两个直径减小的部分和中心地延伸穿过所述孔的轴线;形成至少一个槽,其从所述连接端部之一的外端向内延伸并终止于该一个连接端部或所述中心部分内;沿着所述槽弯曲所述一个连接部的至少一部分,以便在所述至少一个端部扩大所述孔的直径减小的部分;以及使心轴大致沿着中心轴线移动并且通过扩大的孔端部,直到心轴从支柱孔中移除。
在另一方面,本发明提供了一种支柱,包括由铺设的丝线/纤维形成的细长主体,所述主体包括中心大致圆柱形的中心部分、两个相对的连接端部、延伸穿过支柱的中心孔。所述中心孔具有延伸穿过每个端部的两个直径减小的部分和中心地延伸穿过所述孔的轴线。所述中心部的丝线或纤维基本上是连续的并且没有熔融部分。
附图说明
当结合附图阅读时,将更好地理解上述发明内容以及本发明的优选实施例的详细描述。为了说明本发明的目的,在附图中示出了目前优选的示意性实施例。然而应当理解的是,本发明不限于所示的精确布置和手段。在图中:
图1是根据本发明的用于形成支柱的示例性心轴的透视图,特定的心轴结构仅为了说明的目的而示出;
图2是围绕心轴缠绕的一定量的丝线材料或纤维的透视图;
图3是支柱的透视图,示出为在固化之前且为了说明的目的而没有心轴;
图4是图3的支柱的连接端的剖视透视图,示出了两个相对于支柱轴线平行延伸的槽;
图5是连接端的另一视图,示出了连接端的侧部被加工以提供槽;
图6是连接端的另一视图,示出了相对于支柱轴线平行和倾斜延伸并延伸到支柱中心部分的单个槽;
图7是连接端的另一视图,示出了各自都相对于支柱轴线平行和倾斜延伸并延伸到支柱中心部分的两个槽;
图8是连接端的另一视图,示出了各自都相对于支柱轴线平行和倾斜延伸并延伸到支柱中心部分的两个槽,一个槽形成在连接端的上表面附近,另一个槽形成在连接端的下表面附近;
图9是连接端的另一视图,示出了相对于支柱轴线基本上倾斜延伸并延伸到支柱中心部分的两个槽,一个槽形成在连接端的上表面附近,另一个槽形成在连接端的下表面附近;
图10是连接端的另一视图,示出了相对于支柱轴线基本上倾斜延伸并延伸到支柱中心部分的两个槽,两个槽都形成在连接端的下表面附近并且朝向上表面延伸;
图11是连接端的另一视图,示出了相对于支柱轴线平行和倾斜延伸并且延伸到支柱中心部分的单个槽,该槽具有形成在支柱中心部分中的两个发散端部;
图12是连接端的另一视图,示出了各自都相对于支柱轴线平行和倾斜延伸并延伸到支柱中心部分的两个槽,每个槽都具有形成在支柱中心部分中的两个发散端部;
图13是连接端的另一视图,示出了每个都相对于支柱轴线平行和倾斜延伸并且邻近在连接端的相同侧部近端的连接端的上表面和下表面延伸的两个槽;
图14是连接端的另一视图,示出了每个都相对于支柱轴线平行和倾斜延伸的四个槽,两个槽邻近在连接端的一个侧部近端的连接端的上表面和下表面延伸,另外两个槽邻近在连接端的另一侧部近端的连接端的上表面和下表面延伸;
图15是一个连接端的更示意性的剖视透视图,两个端部大致远离彼此弯曲,使得心轴能够通过扩大的孔部移位;
图16是布置在模具半部中的支柱的照片,其中囊插入支柱孔内;
图17是精加工后的支柱连接端部的剖视透视图;
图18是根据本发明形成的支柱的俯视图;以及
图19是图18的支柱的局部剖开侧面平面图。
具体实施方式
现在详细参考附图,其中在整个附图中相同的数字用于表示相同的元件,图1-19中示出了制造具有中空中心孔12的支柱10的方法,其包括以下步骤。提供心轴1和一定量的丝线材料或纤维材料2。心轴1是细长的,类似地成形于支柱10的期望形状,并且由诸如铝或钢的金属材料形成,但是可以形成为大致圆柱形或任何其它合适的形状,图中所示的特定心轴1仅用于说明的目的。丝线/纤维材料2(图2)可以是用于航空航天支柱的任何适当的材料,例如比如碳、硼、玻璃,并且可以用树脂预浸渍,或者/并且可以以切割带、织物或任何其他合适的纤维材料的形式。丝线材料2围绕心轴1铺设以形成支柱10,优选使用任何已知的丝线缠绕过程,但可以手动地铺设或通过任何其它合适的纤维铺设工艺铺设。如果丝线材料2未采用树脂预浸渍,则丝线或纤维优选在缠绕过程中比如通过沉积等采用树脂材料浸渍,以便在固化时形成复合材料。形成的支柱10具有中心大致圆柱形的细长部14、两个相对的连接端部16、18,且中心孔12延伸通过支柱10。中心孔12具有延伸穿过每个端部16、18的两个直径减小的部分13A、13B,并且轴线11中心地延伸穿过孔12。
参见图4-14,至少一个槽20形成在至少一个连接端部16、18中,以便从外端16a或18a向内延伸,并且终止于一个连接端部16、18或中心部14内。优选地,两个槽20形成在至少一个端部16或18中,使得由于下述原因,端部16或18通常是悬臂状的。一个或多个槽20可以仅设置在一个端部16或18中或者在两个端部16、18中。此外,槽20可以形成为与中心轴线11基本平行地延伸,如图4和5所示,或者可以具有大致平行于中心轴线延伸的至少一个部分20a和相对于中心轴线11大致倾斜延伸的至少一个部分20b,如图6-14所示。槽20可以通过任何适当的切割工具或过程形成为相对薄的切口,或者可被加工以分别去除连接端部16、18的一个或两个侧部16b或18b,如图5所示。此外,槽20可以大体上通过侧部16b、18b(图4-7、11和12)的中部形成,基本上靠近上表面16c、18c或下表面16d、18d(图8、13和14),或者分别从上表面16c、18c或下表面16d、18d向下表面16d、18d或上表面16c、16d延伸形成(图9和10)。此外,如图11和12所示,槽20可以各自形成有两个发散端部20c,以进一步有利于支柱端部16、18的弯曲,如下所述。
特别参考图15,在形成槽20之后,一个连接端16或18的至少一部分19通常沿着槽20向外弯曲,以便扩大在至少一个端部16或18的孔径减小部13A或13B。如果已形成两个槽20,则端部16或18的两个悬臂状部分19大致远离彼此弯曲以扩大孔部13A或13B。当端部部分19向外弯曲时,心轴1通常沿着中心轴线11移动并且通过扩大的孔端部13A或13B,直到心轴1从支柱孔12移除。
参考图16,优选地,模具3和囊4被提供用于在心轴1已经从支柱孔12中移除之后固化支柱10。模具3优选为两件式结构,并且具有多个空腔5,每个空腔的形状和尺寸用于最终形成一个支柱12。将囊4插入支柱孔12中,然后将囊4膨胀以基本上填充中心孔12。囊4确保支柱10不会在模制过程中塌陷,并将支柱10向外推压到模具壁上以达到期望的最终尺寸。优选地,在将支柱10放置在模具3中之前插入囊4,但是其可在支柱10位于模具空腔5内时插入。在将一个或多个支柱12各自定位在模具空腔5内之前,热量被施加到模具以固化支柱12,并将树脂材料和丝线材料变成复合材料的刚性一件式主体。此外,施加到模具3的热量将邻近槽20的一个或两个连接端部16、18的部分19熔合以基本上封闭槽20。
参考图17,固化的支柱10从模具3中移除,然后每个连接端部16和18被精加工以在每个端部16、18处形成两个间隔开的叉部22。优选地,叉部22的精加工除去形成有槽20的支柱连接端部16和/或18的至少一部分。此外,在最终加工过程中,至少一个并且优选两个对准的安装孔24(仅示出一个)被加工(例如钻孔)在每个连接端部16、18中,其接收用于将支柱10连接到航空航天结构的紧固件或螺栓。
参见图18和19,通过上述过程形成的支柱10比通过其它过程形成的复合支柱(其通常将支柱形成为两个熔合半部或者具有连接在一起的分离端部和中心部)更为刚性。对于本支柱10,由于槽20完全或主要在连接端部16或/和18中,中心部14的丝线基本上是连续的并且基本上没有熔融部分。换句话说,通过使槽20最多只延伸至中心部14中的最小长度,缠绕的丝线/纤维和树脂材料形成基本上整体的复合体,而不存在可能导致支柱10失效的弱化的熔融部分。
本领域技术人员将理解的是,在不脱离其广泛的发明构思的情况下,可以对上述实施例进行改变。因此应当理解的是,本发明不限于所公开的特定实施例,而是旨在覆盖如本文和所附权利要求中通常所限定的本发明的精神和范围内的修改。
Claims (12)
1.一种制造具有中空中心孔的支柱的方法,所述方法包括以下步骤:
提供心轴和一定量的丝线或纤维材料;
围绕心轴铺设所述丝线或纤维材料以形成支柱,其具有大致圆柱形的中心部分、两个相对的连接端部、延伸穿过支柱的中心孔,所述中心孔具有延伸穿过每个端部的两个直径减小的部分和中心地延伸穿过所述孔的轴线;
形成至少一个槽,其从所述连接端部之一的外端向内延伸并终止于该一个连接端部或所述中心部分内;
沿着所述槽弯曲所述一个连接端部的至少一部分,以便在所述至少一个端部扩大所述孔的直径减小的部分;以及
使心轴大致沿着中心轴线移动并且通过扩大的孔端部,直到心轴从支柱孔中移除。
2.根据权利要求1所述的方法,其中,铺设所述丝线或纤维材料的步骤包括围绕所述心轴缠绕丝线材料。
3.如权利要求1所述的方法,还包括以下步骤:
提供模具和囊;
将囊插入到支柱孔中并使囊膨胀以基本上填充所述中心孔;
向所述模具施加热量以固化支柱。
4.根据权利要求3所述的方法,其中,向所述模具施加热量的步骤将与所述至少一个槽相邻的至少一个连接端部的部分熔合以基本上封闭所述槽。
5.根据权利要求1所述的方法,还包括以下步骤:用树脂浸渍所铺设的丝线。
6.根据权利要求1所述的方法,还包括以下步骤:精加工两个支柱连接端部中的每一个,以在每个端部形成两个间隔开的叉部。
7.根据权利要求6所述的方法,其中,加工所述叉部的步骤去除形成有所述槽的至少一个支柱连接端部的至少一部分。
8.根据权利要求1所述的方法,其中,提供至少一个槽的步骤包括切割所述一个连接端部以形成所述槽。
9.根据权利要求1所述的方法,其中,提供至少一个槽的步骤包括在每个支柱端部提供两个槽,使得每个支柱部通常是悬臂状的。
10.根据权利要求1所述的方法,其中,形成所述槽的步骤包括在所述一个连接端部中形成多个槽和在所述两个连接端部中的每一个中形成至少一个槽中的至少一个。
11.根据权利要求1所述的方法,其中,形成槽的步骤包括以下中的至少一个:
形成基本上平行于所述中心轴线延伸的槽;
形成具有大致平行于所述中心轴线延伸的至少一个部分和相对于所述中心轴线大致倾斜延伸的至少一个部分的槽。
12.一种支柱,包括:
所述支柱是通过根据权利要求1至11其中之一所述的方法制造的;
由铺设的丝线或纤维形成的细长主体,所述主体包括大致圆柱形的中心部分、两个相对的连接端部、延伸穿过支柱的中心孔,所述中心孔具有延伸穿过每个端部的两个直径减小的部分和中心地延伸穿过所述孔的轴线,所述中心部分的丝线或纤维基本上是连续的并且没有熔融部分。
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