Study on micro texturing of uncoated cemented carbide cutting tools for wear improvement and built-up edge stabilisation

Kümmel, Johannes; Braun, Daniel; Gibmeier, Jens; Schneider, Johannes; Greiner, Christian; Schulze, Volker; Wanner, A.

doi:10.1016/j.jmatprotec.2014.07.032

Cited by 250 publications

(88 citation statements)

References 11 publications

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“…Tool wear and the influence of BUE while machining titanium alloys were investigated by Hartung and Kramer [14], who have shown that the formation of an adhesion layer helps to prevent sliding at the tool chip interface and hence improves tool life. Recently, Kümmel et al [15,16] used this idea to improve tool life by creating dimples on the tool surface, which increases BUE adhesion on the cutting tool. Oliaei and Karpat [17] studied microscale machining of titanium alloy via micro turning tests and reported the protective effect to stable BUE on the tool.…”

Section: Introductionmentioning

confidence: 99%

Investigating the influence of friction conditions on finite element simulation of microscale machining with the presence of built-up edge

Oliaei

2016

Int J Adv Manuf Technol

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In micromachining, the uncut chip thickness is less than the cutting tool edge radius, which results in a large negative effective rake angle. Depending on the material properties, this large negative rake angle promotes built-up edge (BUE) formation. A stable BUE acts like a cutting edge and affects the mechanics of the process. The size of the BUE increases with increasing uncut chip thickness and cutting speed. It also creates a positive rake angle, but it decreases the clearance angle of the tool. A method of including BUE formation in finite element simulations is to use sticking friction conditions at the tip of the tool. However, this approach is shown to be insufficient to simulate BUE formation in microscale machining. Therefore, the cutting edge is modified with the experimental BUE size in the finite element simulations based on experimental measurements. The influence of friction models between BUE and the work material has been investigated, and the study identifies friction coefficients that yield good agreements with experimental results. The finite element model is shown to be capable of simulating process forces and chip shapes for uncut chip thickness values larger than minimum uncut chip thickness.

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Section: Introductionmentioning

confidence: 99%

Investigating the influence of friction conditions on finite element simulation of microscale machining with the presence of built-up edge

Oliaei

2016

Int J Adv Manuf Technol

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“…However, in certain conditions, such as the low cutting speed (50 m/min), the formation of build-up edge also has the potential to protect the tool against the flank wear and crater wear, which has been observed by Kummel et al [140]. They further stabilized the build-up edge in front of the tool edge by texturing the rake face with dimples [146]. With the stable build-up edge, the wear of the flank face and the corner radius are suppressed.…”

Section: Influence On Chip Formation and Minimum Uctmentioning

confidence: 95%

Recent Advances in Micro/Nano-cutting: Effect of Tool Edge and Material Properties

Fang

2018

Nanomanuf Metrol

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Micro-and nano-machining technology has been applied in industry to generate high-precision parts with micro/nanometric accuracy or feature size in the recent decades. Cutting is one of the most powerful manufacturing processes, and the material removal mechanism is urgently demanded by the industry to understand and improve the micro/nano-machining process efficiently at a low cost. This paper presents the recent advances in cutting mechanism and its applicability for predicting the surface generation and chip formation, especially when material is removed in micro-and nanoscale. In addition to the industry-concerned performance parameters, fundamental physical parameters such as stresses, strains, temperatures, phase transformation, minimum uncut chip thickness and size effects are discussed in this paper for the indepth understanding of the micro/nano-cutting process.

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“…Different texturing elements, e.g. dimples [5,6,7], crossed and parallel microchannels [8,9], triangles [10], squares [11], as well as other more complex shapes [12,13], have been studied worldwide for tailor tribological performance, however, the most common texturing features are still circular dimple-like depressions, because of…”

Section: Introductionmentioning

confidence: 99%

The Influence of the Tool Surface Texture on Friction and the Surface Layers Properties of Formed Component

Šugárová¹,

Sugar²,

Frnčík³

et al. 2018

Adv. Sci. Technol. Res. J.

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The morphological texturing of forming tool surfaces has a high potential to reduce friction and tool wear and also has an impact on the surface layers properties of formed material. In order to understand the effect of different types of tool textures, produced by nanosecond fibre laser, on the tribological conditions at the interface tool-formed material and on the integrity of formed part surface layers, the series of experimental investigations have been carried out. The coefficient of friction for different texture parameters (individual feature shape, including the depth profile of the cavities and orientation of the features relative to the material flow) was evaluated via a Ring Test and the surface layers integrity of the formed material (surface roughness and subsurface micro hardness) was also experimentally analysed. The results showed a positive effect of surface texturing on the friction coefficients and the strain hardening of test samples material. Application of surface texture consisting of dimple-like depressions arranged in radial layout contributed to the most significant friction reduction of about 40%. On the other hand, this surface texture contributed to the increase of surface roughness parameters, Ra parameter increased from 0.49 μm to 2.19 μm and the Rz parameter increased from 0.99 μm to 16.79 μm.

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Study on micro texturing of uncoated cemented carbide cutting tools for wear improvement and built-up edge stabilisation

Cited by 250 publications

References 11 publications

Investigating the influence of friction conditions on finite element simulation of microscale machining with the presence of built-up edge

Investigating the influence of friction conditions on finite element simulation of microscale machining with the presence of built-up edge

Recent Advances in Micro/Nano-cutting: Effect of Tool Edge and Material Properties

The Influence of the Tool Surface Texture on Friction and the Surface Layers Properties of Formed Component

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