A high-efficiency generation method of integral impeller channel tool path based on parametric domain template trajectory mapping

Han, Fenghui; Zhang, Chuanwei; Guo, Wei; Peng, Xian-long; Wu, Zhen

doi:10.1007/s00170-018-2688-0

Cited by 8 publications

(2 citation statements)

References 14 publications

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“…This method saved up to 25% of the original manufacturing time. Feiyan et al [23] proposed two milling strategies for finishing the hub of impellers. One strategy "streamlined trajectory" is based on conventional attitude so that the toolpaths follows the guiding 3D hub curve, but the disadvantage of this principle is that the toolpaths are unnecessarily long, since in the narrowest section between the blades there is the same number of passes as in the widest section, at which the number of toolpath passes is derived to achieve a certain scallop.…”

Section: Introductionmentioning

confidence: 99%

Determination of Impeller Blade Fillet Radius for Productive Finish Milling

Vavruska

Kratena²,

Cech³

et al. 2023

Preprint

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Impellers, which are part of the turbochargers in many transport and agricultural vehicles such as cars, trucks, tractors, boats as well as lawnmowers, are parts where monitoring the efficiency of design and subsequent manufacturing is very important. In order to maximize the efficiency of the compressor stage, many iterations in impeller blade geometry design must be performed to achieve the operating conditions in terms of both performance and strength. Impeller manufacturing is then strongly dependent on the impeller blade geometry design. Manufacturing efficiency varies greatly if the impeller is designed with the blades made up of complex surfaces (requires more machining time) or ruled surfaces (requires less machining time). However, the two impeller geometries have a common element that strongly influences their manufacturing efficiency – the impeller blade fillet radius. The choice of the blade fillet radius value is very limited by the impeller blade geometry design. Therefore, this paper proposes a method to determine the blade fillet radius value in order to achieve an efficient impeller geometry in terms of manufacturing efficiency at the impeller design stage. The method is verified on the example of milling several impeller variants.

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Section: Introductionmentioning

confidence: 99%

Determination of Impeller Blade Fillet Radius for Productive Finish Milling

Vavruska

Kratena²,

Cech³

et al. 2023

Preprint

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show abstract

“…In recent years, with the rapid development of digitalization and intelligent manufacturing, various CNC forms and special processing methods have been widely used in the field of blade polishing, such as CNC precision milling [3], robotic polishing [2,6], abrasive flow polishing [1], and abrasive belt polishing [5], 5-axis CNC machining is one of the most common processing methods for integral impellers [7,8], due to its advantages of high machining adaptability and controllability of machining dimensional accuracy. Although this method can successfully process an integral impeller with the surface roughness of Ra 0.8 μm, the machining trajectory planning is complicated and the tool marks on the machining surface are obvious [9]. In addition, due to the thin blade wall and weak rigidity, workpiece deformation and tool vibration are easy to occur during machining, resulting in inhomogeneous removal of material from processed surface [2].…”

Section: Introductionmentioning

confidence: 99%

A novel high-quality and high-efficiency immersion fluid chemical mechanical polishing process for integral impellers

Liao

Luo

Chang

et al. 2022

Int J Adv Manuf Technol

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A novel process of immersion fluid chemical mechanical polishing (CMP) is proposed to replace the traditional manual polishing and the mechanical polishing for integral impeller.Using the FLUENT software to simulate the force state on the integral impeller surface and the fluid motion trajectory during the polishing process, in order to determine the optimal polishing process , and to reveal the formation mechanism of the high-quality integral impeller surface. The immersion fluid CMP process experiment was carried out on the integral impeller with the developed CMP slurry containing phosphoric acid (H3PO4), hydrogen peroxide (H2O2), citric acid (CA), silicon carbide (SiC) and deionized water. After 2.5 hours of CMP, the surface roughness decreased from Ra 1.651 μm to Ra 0.658 μm, the polished surface is smooth and without tool marks. X-ray photoelectron spectroscopy (XPS) and infrared (IR) were used to reveal the polishing mechanism of the oxidation, dissolution, removal and complex precipitates on the surface of the integral impeller. This research provides a novel process for the precision machining of other complex structural parts similar to the integral impeller, which has the characteristics of simple polishing process, high efficiency and good polishing effect.

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