Influence of cutting edge radius on process forces in orthogonal machining of carbon fibre reinforced plastics (CFRP)

Sauer, Konstantin; Witt, Marco; Pütz, Matthias

doi:10.1016/j.procir.2019.09.042

Cited by 20 publications

(6 citation statements)

References 13 publications

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“…where n is strain hardening exponent, ρw is cutter material density, Cp-w and Tm are the specific heat and melting point respectively of the abrasive and C is constant which has a value of about 0.5 for many typical metals, as reported by [41]. The drag finishing is a typical equipment for preparing the cutting edge of round bar tools and workpiece polishing as reported by [42]- [43]. The complexity of solid particle abrasion relies on its rotational movement in fixed barrel and the material removal depends on normal and oblique action.…”

Section: Analysis Of Abrasion Mechanismmentioning

confidence: 99%

“…Ar represents the nominal initial radius rs transform final radius rβ formed to remove the area of material. Considering the quantification of the cutting edge preparation process, an expression to determine the nominal removal area of the material is proposed by [43]. For this expression, the change of radius (from rs to and the wedge angle β are considered.…”

Section: Materials Removal Rate (Mrr)mentioning

confidence: 99%

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Analysis of abrasives on cutting edge preparation by drag finishing

Wang

et al. 2022

Int J Adv Manuf Technol

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Cutting edge preparation has become more important for tool performance. The micro-shape, radius and surface topography of the cutting edge plays a significant role in the machining process. The cutting edge of solid carbide end mills have some micro-defects after grinding. For eliminating aforementioned problem, this study investigates drag finishing (DF) preparation for solid carbide end mills reconstruct cutting edge micro-geometry. This paper is to present the design of DF experimental set-up and analysis the characterization of various abrasive media (K3/600, K3/400, HSC 1/300 and HSO 1/100) on the evolution of the surface /roughness along the cutting edge. In parallel, the mechanism of material removal and the kinematics trajectory of the drag finishing are presented. In fact, the form factor (also called as "K-factor") of the cutting edge micro-geometry is quantified. Comparing with four lapping media, the higher material removal rate (MRR) and the lower surface roughness are obtained by HSO 1/100 abrasive process. The results show that the cutting edge K-factor, MRR and surface topography are influenced by the abrasive particles size, composition and process time. The cutting edge micro-geometry is measured through Scanning Electron Microscopy (SEM) and 3D Optical measuring instrument.

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Section: Analysis Of Abrasion Mechanismmentioning

confidence: 99%

Section: Materials Removal Rate (Mrr)mentioning

confidence: 99%

Analysis of abrasives on cutting edge preparation by drag finishing

Wang

et al. 2022

Int J Adv Manuf Technol

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“…Tool wear mainly occurs at the cutting edge of the cutting tool due to abrasive characteristics of the carbon fibers. Increasing cutting edge radius leads to delamination and fiber protrusion [11]. Diamond or PCD coatings can reduce wear but also raise initial cutting edge rounding [12].…”

Section: Machiningmentioning

confidence: 99%

Integrated Machining, Quality Inspection and Sealing for CFRP Components

Esch

Gebhardt

Tiedje

et al. 2021

Advances in Automotive Production Technology – Theory and Application

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Manufacturing processes of carbon fiber reinforced plastics (CFRP) components are often characterized by a high fraction of manual activities especially in terms of handling, cleaning and edge sealing. The innovative machining process introduced in the project CFKComplete comprises a fully integrated and automated workflow reducing unnecessary handling and transportation activities. The concept has been realized on a 5-axis machine tool, providing enough workspace for large structural workpieces and the developed technology units. The units themselves are defined by their modularity, scalability and independency of the guiding machine. Key aspect of the innovative concept are four purpose built and developed interchangeable technology units, which are driven by the base machinery. Thus, the machine's working scope is being enhanced from machining to a fully integrated workflow including quality inspection, cleaning, sealing and curing.

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“…If the process parameters (cutting speed and depth) are kept constant, the friction coefficient will depend highly on the rake angle of the tool. Nevertheless, the fact that the cutting tools have a rounded edge cannot be ignored for machining of fiber composites because this geometrical parameter has a significant impact of the cutting behavior of fibers [10,39,40], especially when machining natural fiber composites that are highly sensitive to the small variations of the cutting edge radius [10]. In the following, the cutting friction is discussed by considering the rounded cutting edge.…”

Section: Friction Modelingmentioning

confidence: 99%

Numerical modeling of micro-friction and fiber orientation effects on the machinability of green composites

Chegdani

Mansori

Chebbi

2020

Tribology International

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This paper aims to enhance the predictiveness of a finite element (FE) model for machining of natural fiber composites through a tribological approach based on the micro-friction phenomenon between the cutting tool and the components of the composite structure. A 2D micromechanical model for orthogonal cutting of flax fibers reinforced polylactic-acid (PLA) composites is considered in this study at different orientation of fibers. Results show that the numerical thrust forces are significantly affected by the variation of the micro-friction in the model. An optimized value of the micro-friction coefficient has been found to fit with the experimental results. The FE model provides the ability to calculate with good accuracy the effect of fiber orientation on the machinability of flax/PLA composites.

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Influence of cutting edge radius on process forces in orthogonal machining of carbon fibre reinforced plastics (CFRP)

Cited by 20 publications

References 13 publications

Analysis of abrasives on cutting edge preparation by drag finishing

Analysis of abrasives on cutting edge preparation by drag finishing

Integrated Machining, Quality Inspection and Sealing for CFRP Components

Numerical modeling of micro-friction and fiber orientation effects on the machinability of green composites

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