German bicycle manufacturerUrwahn自行车和奥地利定制摩托车品牌Vagabund Moto已经合作创建了一个具有3D印刷钢架的新型自行车。不寻常的设计3D打印意味着所谓的“ Stadtfuchs”或“ City Fox”比平常更轻巧，并且电气组件被简化到框架中。
合作伙伴已经完成了50次自行车的预订。Urwahn现在针对今年年底的100架印刷框架的生产。3D印刷行业与Urwahn Bikes的首席执行官兼联合创始人拉蒙·托马斯（Ramon Thomas）交谈，了解了有关Urwahn X Vagabund Stadtfuchs的更多信息，即开发和制造。
“Habitat adaptability is the key to survival for every animal,” states Thomas.
“The fox is a masterful adaptation artist. He conquers our cities with great refinement and inventiveness and winds his way effortlessly and silently through the smallest corners while hunting. [This] serves as a model for the Stadtfuchs.”
A 3D printed steel bike frame
After several years of development, the Urwahn x Vagabund team, led by designer Sebastian Meinecke, developed the预先合金超高强度钢的Stadtfuchs自行车框架1.2709. AConcept Laser M2 cusing Multilaser systemis used to make the frame, which is made as an assembly then welded together.
“当我们大约4年前，当我们第一次开始在大学项目中开发URWAHN框架时，我们的第一个原型之一已经由选择性激光熔化印刷。我们还尝试了其他生产技术。”托马斯解释说。
这辆自行车的独特功能之一是absence of a seat tube, the supporting bracket usually positioned just below the seat, giving the frame a “floating” appearance. 3D printing has also enabled smart integration of an LED light system.
“After we continued with precision casting, we realized that the walls where too thin for this production procedure,” Thomas continues. “Therefore, we switched to SLM and managed to get very good surfaces and repeatable quality,”
这些积极的特征结合了将诸如光线，电缆路由或座椅夹等技术元素集成到框架中的可能性，从而为我们提供了3D打印的资格。”
10 bicycle frames per week
3D打印的自行车框架由主凸耳组成，包括绘制的管，单托盘，头管，座椅连接器，底部支架和掉落。在设计过程中，施加了新型的泪珠形状，高应有的CRMO钢管，以达到低于0.9 mm的壁厚。然后将零件焊接在一起。
“The filigree drawn tube profiles form the basic structure of our innovative steel frame. Similar to the hind legs of a fox, the elastic rear frame guarantees dynamic manoeuvrability and compensates for uneven road surfaces to the benefit of your driving comfort,” explains Thomas.
At full capacity, Urwahn x Vagabund manufacturing partners are capable of 3D printing 10 bicycle frames per week. By the end of 2019, the partners are currently targeting the production of 100 fully assembled bikes. “In the future,” Thomas adds, “we will follow this approach for further product development.”
“With the next generations and product variations we’ll be able to integrate more components for an even more puristic bicycle.”
A full production cycle for theStadtfuchs自行车乘坐8-10 weeks and it is priced at €4,499. For this price tag, the customer is provided a bike with integrated anti-theft protection (with tracking provided through an app), lights, a hydraulic braking system and noiseless Shimano gear system.
托马斯继续说：“我们很自豪地自行车自行车行业的技术先驱。”“在收到的许多预订中，到目前为止，我们已经制造了50辆自行车。我们的目标是今年生产100辆自行车。”
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Featured image shows the Urwahn x Vagabund 3D printed Stadtfuchs bike. Photo via Urwahn/Vagabund Moto.
