CN105073308A - 通过对包括主要元件和刚性辅助元件的粉末进行选择性熔融获得的部件 - Google Patents
通过对包括主要元件和刚性辅助元件的粉末进行选择性熔融获得的部件 Download PDFInfo
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Abstract
本发明涉及一种通过选择性熔融在支承板(3)上的粉末获得的部件,该部件(1)包括主要元件(5)和刚性辅助元件(7),这些辅助元件被布置在主要元件(5)与支承板(3)之间,该辅助元件预定要从主要元件(5)拆卸。辅助元件(7)的全部或一部分包括厚度为E的主体(9)和宽度为L的头部(11),宽度L大于主体(9)的厚度E,主体(9)连接至支承板(3),头部(11)连接至主要元件(5)。辅助元件(7)的全部或一部分包括头部(11)与主体(9)之间的连接区(13)。辅助元件的头部(11)在该元件(7)的高度H的至多一半上延伸。
Description
技术领域
本发明涉及用于硫化和模制轮胎的模制元件的制造,更具体地说,涉及通过粉末的选择性熔融获得的模制元件的制造。
背景技术
已知的惯例是利用选择性熔融(更通常称作烧结)的方法来生成模制元件。该方法使用能量束来熔融粉末。“能量束”意指电磁辐射(例如,激光束)或颗粒束(例如,电子束)。
从文档EP1641580中已知利用激光的烧结方法,下文中称作激光烧结方法。在该文档中,将第一层粉末通过分层构件铺在支承板上。该第一层粉末的粉末颗粒的全部或一部分随后根据将获得的对象的形状通过激光束被凝聚。一旦执行该步骤,将第二层粉末铺在第一层粉末上,以使得其可利用激光依次选择性地熔融。通过重复铺设一层和利用激光熔融的这些操作,一层一层地建立烧结的对象。
文档WO2010072960公开了一种用于利用烧结制造模制元件的方法。因此,该模制元件包括在该文档中以24标出的条状物和翅片26。在该方法中,在与该模制元件相同的时间生产辅助元件。辅助元件明显地包括支承部分36和以28指示的连接部分。支承部分36的厚度基本对应于模制元件的厚度,并且连接部分的厚度小于这些支承部分的厚度,从而它们可形成有利于将模制元件从支承板拆卸的断裂线。现在,辅助元件的制造是昂贵的,这是因为其需要熔融大量粉末。此外,这些辅助元件的使用受到限制,因为一旦模制元件从支承板拆卸,它们就被丢弃。
因此,当利用烧结生成模制元件时,仍然需要优化辅助元件的使用,从而使得这种元件的制造不那么昂贵。
定义:
“轮胎”意指所有类型的弹性胎面,无论其是否受到内压。
轮胎的“胎面”意指通过侧表面和通过两个主表面限定的一定量的橡胶材料,其中一个主表面旨在当轮胎行驶时与路面接触。
“模具”意指分离的模制元件的集合,当它们合在一起时,限制用于硫化和模制轮胎的环状模制空间。
“模制元件”意指模具的一部分。例如,模制元件是旨在模制轮胎的胎面中的隆起的元件的内衬的一部分。
发明内容
本发明涉及一种通过选择性熔融在支承板上的粉末获得的部件。该部件包括主要元件和布置在主要元件与支承板之间的多个刚性辅助元件。辅助元件的全部或一部分包括厚度为E的主体和宽度为L的头部,宽度L大于主体的厚度E。主体连接至支承板,头部连接至主要元件。辅助元件的全部或一部分包括头部与主体之间的连接区。辅助元件的头部在该元件的高度H的至多一半上延伸。
本发明提出了在一个和同一个制造操作中制造主要元件和辅助元件,以形成烧结的部件。因为这些辅助元件布置在主要元件下方,因此它们将在制造主要元件的同时支承主要元件。一旦制造好主要元件,辅助元件也使得主要元件更容易从支承板上拆卸。因为粉末是分层的,所以辅助元件在制造主要元件的同时经受高水平的应力。通过提供辅助元件的主体与头部之间的连接区,辅助元件的机械完整性提高并且主要元件的制造随之改进。此外,通过限制头部的厚度,限制了用于生产辅助元件的粉末的消耗。
在实施例的一个替代形式中,辅助元件的头部在辅助元件的高度H的至多1/3上延伸。
通过进一步限制头部的厚度,更进一步地限制了在生成辅助元件时材料的消耗。
在实施例的另一替代形式中,连接区具有倒圆转接半径R。
通过提供逐渐变圆的连接,辅助元件的头部与主体之间的连接简化,并且因此限制了在连接区产生开裂的风险。
在实施例的一个替代形式中,头部以扩张度α从主体逐渐加宽。
这样,主要元件可享受最大化的支承,同时最小化辅助元件与支承板之间的接触。此外,给头部带来的逐渐加宽限制了辅助元件中的初期断裂,从而为这些辅助元件确保更大的机械强度。
头部的扩张度在20°与140°之间。
通过这种扩张度,确保了主要元件由辅助元件良好地支承。
优选地,头部的扩张度在90°与120°之间。
在实施例的另一替代形式中,头部的宽度至少等于主体厚度的两倍。
这样,改进了主要元件由辅助元件的支承。
在实施例的另一替代形式中,辅助元件的头部与主要元件接触,从而该主要元件完全安放在辅助元件上。
通过使得主要元件完全安放在辅助元件的头部上,改进了该主要元件的制造。实际上辅助元件的头部由熔融的粉末构成。头部的聚集因此形成其上可合适地布置和熔融形成主要元件的第一层粉末的连续的支承。
在实施例的另一替代形式中,头部包括用于将主要元件从辅助元件拆卸的拆卸工具。
这样,一旦更容易地制造该主要元件,便使得该主要元件从辅助元件分离。
在实施例的另一替代形式中,辅助元件的全部或一部分具有倾斜的主体,与支承板形成大于或等于20°的角度β。
因此,辅助元件可相对于粉末的层叠方向相反取向。这允许辅助元件在部件的制造过程中更好地吸收与该层叠相关的负载。
本发明的另一主题涉及一种制造预定要被布置在用于硫化和模制轮胎胎面的模具中的模制元件的方法,通过选择性熔融在支承板上的粉末生成该模制元件。所述方法包括生成多个辅助元件,这些辅助元件的全部或一部分包括厚度为E的主体和宽度为L的头部,宽度L大于主体的厚度E,主体连接至支承板并且头部连接至模制元件。辅助元件的全部或一部分包括头部与主体之间的连接区,辅助元件的头部在该元件的高度H的至多一半上延伸。该方法还包括将模制元件从辅助元件拆卸的步骤。
附图说明
本发明的其它特征和优点将参照附图从通过非限制性示例给出的以下描述中变得清楚,图中:
图1示意性地示出了根据本发明的部件的剖视图,该部件包括根据本发明的第一实施例产生的多个辅助元件;
图2示意性地示出了图1的辅助元件的放大图;
图3示意性地示出了根据本发明的第二实施例的辅助元件;
图4示意性地示出了根据本发明的第三实施例的辅助元件;
图5示出了根据本发明的第四实施例生产的多个辅助元件;
图6示出了根据本发明的第五实施例生产的辅助元件;
图7示出了根据本发明的第六实施例生产的辅助元件;
图8示出了用于制造根据图1的部件的方法的步骤。
具体实施方式
在以下描述中,基本相同或相似的元件将由相同标号指示。
图1示意性地示出了选择性熔融在支承板3上d粉末获得的部件1的剖视图。该部件1包括主要元件5。该主要元件5在这里形成用于硫化和模制轮胎胎面的全部或一部分的模制元件。该部件1还包括均匀地分布在主要元件5与支承板3之间的多个辅助元件7。这些辅助元件的截面包括连接至支承板3的主体9和连接至主要元件5的头部11。更具体地说,头部11的宽度L大于主体9的厚度E。
如已经强调的,主要元件5和辅助元件7通过选择性熔融粉末形成,该粉末可为金属、有机(陶瓷)或塑料粉末。粉末也可为不同类型的粉末的混合物。
图2示出了图1的辅助元件的放大图。该元件包括头部11与主体9之间的连接区13。辅助元件的头部11在元件7的高度H的至多一半上延伸。优选地,头部11在辅助元件的高度H的至多1/3上延伸。
图3示出了其中辅助元件的头部11包括连接区13的实施例的替代形式。这里该连接区采用倒圆转接半径R(blendradius)的形式。根据辅助元件的头部11的长度的大小,该倒圆转接半径为例如1mm与20mm之间。在该实施例中,头部11以扩张度(divergence)α从连接区13逐渐加宽。在这种情况下,该扩张度α在20°与140°之间。不同地说,头部11具有整体上三角形截面,一条边12形成用于支承主要元件5的支承件。三角形的另两条边14与平行于三角形的边12的方向形成角度α’。该角度α’在20°与80°之间。这样,可以考虑具有足够宽度的头部11的辅助元件支承主要元件,同时主体9相对薄。
优选地,头部的扩张度在90°与120°之间。
图4示出了其中头部11包括三角形形状的头部边缘15的实施例的另一替代形式。该头部边缘15可改进各个辅助元件之间的接触,以获得其上可安装主要元件5的连续表面。
应该注意,在图1至图4的示例中,头部11的宽度远大于主体9的厚度E。更具体地说,头部的宽度至少等于该厚度的两倍。以示例的方式,主体的厚度E在0.1mm与0.5mm之间,优选地,该厚度等于0.3mm。
以图3至图4的实施例为例,其中,头部逐渐加宽,头部11的宽度意指该头部的平均宽度。
图5示出了本发明的第五实施例,其中辅助元件7的头部11与主要元件5接触。因此,主要元件5完全安放在辅助元件7上,这些辅助元件均匀地分布在该主要元件5下方。
图6示出了其中辅助元件7包括用于将该元件7从主要元件拆卸的工具17的实施例的替代形式。这些拆卸工具在这里以连续孔的形式示出。
图7示出了其中辅助元件7相对于支承板3倾斜的实施例的另一替代形式。这些辅助元件7因此形成相对于支承板3大于或等于20°的角度β。
图8示出了制造模制元件的方法。该方法包括在模制元件下方生成刚性辅助元件的步骤E1。因此,这些辅助元件包括主体和其宽度大于主体的厚度的头部。辅助元件的全部或一部分还包括头部与主体之间的连接区。另外,辅助元件的头部在该元件的高度H的至多一半上延伸。该方法还包括将辅助元件从模制元件拆卸的步骤E2。
本发明不限于描述和描绘的示例,并且在不脱离其范围的情况下,可对其做出各种修改。
因此,在图1和图5中,主要元件示为具有平坦的下表面,也就是说,与辅助元件接触的平坦表面。作为替代,该下表面具有不平坦的轮廓。例如,该下表面可具有一个或多个曲率。如果是这样,辅助元件具有不同高度以符合这些曲率。
此外,在图1和图5中,辅助元件沿着主要元件的宽度延伸,也就是说,沿着与这些图的截面平面垂直的方向延伸。作为一个替代形式,辅助元件可沿着主要元件的长度延伸。
最后,可将本发明应用于除模制元件以外的任何类型的元件的制造。
Claims (11)
1.一种通过选择性熔融在支承板(3)上的粉末获得的部件,该部件(1)包括主要元件(5)和刚性辅助元件(7),这些辅助元件被布置在主要元件(5)与支承板(3)之间,辅助元件预定要从主要元件(5)上拆卸,其特征在于,辅助元件(7)的全部或一部分包括厚度为E的主体(9)和宽度为L的头部(11),该宽度L大于主体(9)的厚度E,主体(9)连接至支承板(3),头部(11)连接至主要元件(5),并且其中,辅助元件(7)的全部或一部分包括头部(11)与主体(9)之间的连接区(13),以及辅助元件的头部(11)在该元件(7)的高度H的至多一半上延伸。
2.根据权利要求1所述的部件,其特征在于,辅助元件(7)的头部(11)在辅助元件的高度H的至多1/3上延伸。
3.根据权利要求1和2中的任一项所述的部件,其特征在于,连接区(13)具有倒圆转接半径R。
4.根据权利要求1至3中的任一项所述的部件,其特征在于,头部(11)从连接区(13)以扩张度α逐渐加宽。
5.根据权利要求4所述的部件,其特征在于,头部(11)的扩张度α在20°与140°之间。
6.根据权利要求4和5中的任一项所述的部件,其特征在于,头部(11)的扩张度α在90°与120°之间。
7.根据前述权利要求中的任一项所述的部件,其特征在于,头部(11)的宽度L至少等于主体(9)的厚度E的两倍。
8.根据权利要求1至7中的任一项所述的部件,其特征在于,辅助元件(7)的头部(11)与主要元件(5)接触,从而该主要元件(5)完全安放在辅助元件(7)上。
9.根据权利要求1至8中的任一项所述的部件,其特征在于,头部(11)包括用于将主要元件(5)从辅助元件(7)拆卸的拆卸工具(17)。
10.根据权利要求1至9中的任一项所述的部件,其特征在于,辅助元件(7)相对于支承板(3)倾斜,这些辅助元件分别与该支承板(3)形成大于或等于20°的角度β。
11.一种制造预定要被置于用于硫化和模制轮胎胎面的模具中的模制元件(5)的方法,通过选择性熔融在支承板(3)上的粉末生成该模制元件(5),所述方法包括步骤(E1),即在模制元件(5)下方生成刚性辅助元件(7),这些辅助元件(7)的全部或一部分包括厚度为E的主体(9)和宽度为L的头部(11),宽度L大于主体的厚度E,主体(9)连接至支承板(3),并且头部(11)连接至模制元件(5),辅助元件(11)的全部或一部分包括头部(11)与主体(9)之间的连接区(13),辅助元件的头部(11)在该元件(7)的高度H的至多一半上延伸,该方法包括步骤(E2),即将辅助元件(7)从模制元件(5)拆卸。
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FR1351325A FR3002167B1 (fr) | 2013-02-15 | 2013-02-15 | Piece obtenue par fusion selective d'une poudre comprenant un element principal et des elements secondaires rigides |
PCT/EP2014/052730 WO2014124969A1 (fr) | 2013-02-15 | 2014-02-12 | Piece obtenue par fusion selective d'une poudre comprenant un element principal et des elements secondaires rigides |
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- 2014-02-12 EP EP14704146.1A patent/EP2956260B1/fr active Active
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CN106853527A (zh) * | 2016-12-29 | 2017-06-16 | 西安铂力特激光成形技术有限公司 | 一种树枝状3d打印支撑结构 |
CN111790908A (zh) * | 2019-04-05 | 2020-10-20 | 株式会社沙迪克 | 层叠造型物的制造方法、层叠造型装置及层叠造型物 |
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US10307979B2 (en) | 2019-06-04 |
US20160009039A1 (en) | 2016-01-14 |
FR3002167A1 (fr) | 2014-08-22 |
WO2014124969A1 (fr) | 2014-08-21 |
FR3002167B1 (fr) | 2016-12-23 |
EP2956260A1 (fr) | 2015-12-23 |
EP2956260B1 (fr) | 2019-04-03 |
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