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Tooth Root Load Capacity of Additive Manufactured Gears
参考中译:添加剂加工齿轮的齿根承载能力


          

刊名：Gear Technology
作者：Lukas Klee（Laboratory for Machine Tools and Production Engineering (WZL) of RWTH Aachen University）
Jens Brimmers（Laboratory for Machine Tools and Production Engineering (WZL) of RWTH Aachen University）
Thomas Bergs（Laboratory for Machine Tools and Production Engineering WZL at the RWTH Aachen University）
刊号：782B0082
ISSN：0743-6858
出版年：2022
年卷期：2022, vol.39, no.8
页码：56-66
总页数：11
分类号：TG5
语种：eng
文摘：Due to near-net shape production, additive-manufactured (AM) gears have a high potential to decrease costs and increase resource efficiency. The decreasing product life cycles as well as the increasing individualization of components demand high flexibility in manufacturing processes (Ref 4). The production of powder metal (PM) gears by die pressing is only economical for large batch sizes or in series production due to the plant technology (Ref.3). An advantage of PM produced gears is the component density that can be adjusted through the sintering process compared to conventional machining. The porosity is accompanied by a reduction in weight and possible optimization of the noise vibration harshness (NVH) behavior of the gears. Due to the expected future shift of the automotive industry from combustion engines to electrified powertrains, the optimization of the noise behavior of transmission components is becoming increasingly important (Ref.25). Compared to conventional subtractive manufacturing processes, the required tool operations are reduced, and resource efficiency is increased. Both, binder jetting (BJT) and laser powder bed fusion (LPBF) are generative manufacturing processes that can provide a solution to the conflicting aims of near-net-shape economic production and adjustable density in the component for small batch sizes in gear manufacturing (Ref.3). For small batches, both additive manufacturing technologies offer an approach to manufacture gears that meet the requirements in terms of quality, strength, acoustics, and economy. This report analyzes the tooth root load capacity of BJT gears made of stainless steel 17-4PH (X5CrN-CuNb16-4) and LPBF gears using the case hardening steel 16MnCr5. The BJT gears have a specific density of ρ_(0,rel)≈ 98 percent and the LPBF gears of ρ_(0,rel)≈ 99.9 percent. The fatigue strength of the BJT gears is determined in screening tests and classified by comparison with the tooth root load capacity results of gears made of 316L (stainless steel, X2CrNiMo17 12 2). After the discussion and analysis of the influences of different process parameters during the production of BJT gears made of 17-4PH, the manufacturing process is adapted along the entire process chain.
参考中译：由于近净形状的生产，添加剂制造(AM)齿轮具有降低成本和提高资源效率的巨大潜力。不断缩短的产品生命周期以及日益个性化的零部件要求制造过程具有很高的灵活性(参考文献4)。由于工厂技术的原因，通过模压生产粉末金属(PM)齿轮只有在大批量或批量生产时才是经济的。与传统加工相比，粉末冶金生产的齿轮的一个优点是成分密度可以通过烧结过程进行调整。气孔率伴随着重量的减轻和齿轮噪声振动粗糙度(NVH)行为的可能优化。由于预计未来汽车行业将从内燃机转向电气化动力总成，变速器部件的噪声性能优化变得越来越重要(参考文献25)。与传统的减法制造工艺相比，减少了所需的工具操作，提高了资源效率。粘结剂喷射(BJT)和激光粉床熔化(LPBF)都是创成式制造工艺，可以解决齿轮制造中近净形状经济生产和小批量部件密度可调这两个相互冲突的目标。对于小批量，这两种添加剂制造技术都提供了一种在质量、强度、声学和经济性方面满足要求的齿轮制造方法。本文分析了17-4PH不锈钢(X5CrN-CuNb16-4)BJT齿轮和采用16MnCr5硬化钢的LPBF齿轮的齿根承载能力。BJT齿轮的比密度为≈_(0，Rel)≈为98%，ρ_(0，Rel)ρ齿轮为99.9%。通过筛选试验确定了BJT齿轮的疲劳强度，并与316L(X2CrNiMo17 12 2不锈钢)齿轮的齿根承载能力结果进行了比较。对17-4PH BJT齿轮生产过程中各工艺参数的影响进行了讨论和分析，确定了整个工艺链的制造工艺。



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