An experimental method for determining the service life and reliability of the CNC lathe main spindle bearing assembly

IF 1.9 Q3 ENGINEERING, MANUFACTURING

Manufacturing Review Pub Date : 2023-01-01 DOI:10.1051/mfreview/2023005

V. Pham, Tam Pham Minh, T. Nguyen

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引用次数: 0

Abstract

The main spindle bearing assembly (MSBA) plays an important role in the quality and service life of CNC machine tools and industrial equipment. The MSBA is usually evaluated based on the allowable wear or the stiffness independently combined with the vibration characteristics. Therefore, it is very important to determine the service life of MSBA when the wear reaches the allowable value, and the stiffness is reduced to the allowable value. This paper studies the simultaneous relationship of wear, stiffness, and vibration characteristics of MSBA in a CNC lathe. The results show that the service life of MSBA is different when evaluated based on each criterion (wear or stiffness). The stiffness of the MSBA is reduced to the allowable limit [J] = 200 N/μm with a Root Mean Square (RMS) value of about 5.75 mm/s2. The wear of the MSBA reaches the allowable limit [δa] = 5 μm with an RMS value of about 4.5 mm/s2. The life of MSBA calculated according to the stiffness criterion is about 1.18 times higher than that calculated based on the wear criterion. The average life of MSBA with standard lubrication according to the wear criterion reaches ∼15,799 h and RMS reaches ∼2.4508 mm/s2.

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一种确定数控车床主轴轴承组件使用寿命和可靠性的实验方法

主轴轴承组件(MSBA)对数控机床和工业设备的质量和使用寿命起着重要作用。MSBA通常基于允许磨损或刚度独立结合振动特性进行评估。因此，当磨损达到允许值，刚度降至允许值时，确定MSBA的使用寿命是非常重要的。研究了数控车床MSBA的磨损、刚度和振动特性的同步关系。结果表明，基于不同的标准(磨损量或刚度)评估MSBA的使用寿命是不同的。MSBA的刚度降至允许极限[J] = 200 N/μm，均方根(RMS)约为5.75 mm/s2。MSBA的磨损量达到允许极限[δa] = 5 μm, RMS值约为4.5 mm/s2。根据刚度准则计算的MSBA寿命比根据磨损准则计算的MSBA寿命高约1.18倍。根据磨损标准进行标准润滑的MSBA平均寿命达到~ 15,799 h, RMS达到~ 2.4508 mm/s2。

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来源期刊

Manufacturing Review ENGINEERING, MANUFACTURING-

CiteScore

5.40

自引率

12.00%

发文量

审稿时长

8 weeks

期刊介绍： The aim of the journal is to stimulate and record an international forum for disseminating knowledge on the advances, developments and applications of manufacturing engineering, technology and applied sciences with a focus on critical reviews of developments in manufacturing and emerging trends in this field. The journal intends to establish a specific focus on reviews of developments of key core topics and on the emerging technologies concerning manufacturing engineering, technology and applied sciences, the aim of which is to provide readers with rapid and easy access to definitive and authoritative knowledge and research-backed opinions on future developments. The scope includes, but is not limited to critical reviews and outstanding original research papers on the advances, developments and applications of: Materials for advanced manufacturing (Metals, Polymers, Glass, Ceramics, Composites, Nano-materials, etc.) and recycling, Material processing methods and technology (Machining, Forming/Shaping, Casting, Powder Metallurgy, Laser technology, Joining, etc.), Additive/rapid manufacturing methods and technology, Tooling and surface-engineering technology (fabrication, coating, heat treatment, etc.), Micro-manufacturing methods and technology, Nano-manufacturing methods and technology, Advanced metrology, instrumentation, quality assurance, testing and inspection, Mechatronics for manufacturing automation, Manufacturing machinery and manufacturing systems, Process chain integration and manufacturing platforms, Sustainable manufacturing and Life-cycle analysis, Industry case studies involving applications of the state-of-the-art manufacturing methods, technology and systems. Content will include invited reviews, original research articles, and invited special topic contributions.