Modelling and experimental analysis of the effects of tool wear on form errors in stainless steel blanking

a b s t r a c tThis work presents a combination of finite element simulations of copper alloy thin sheet blanking and a wear algorithm based on Archard formulation for abrasive wear of the punch. Firstly, a tribometer has been specifically designed to measure wear coefficient, and punch worn profiles have been extracted by means of a double-print method. Secondly, the blanking process has been simulated through the finite element method by using an elasto-plastic constitutive model and the shear failure model. Thirdly, a wear algorithm has been programmed using experimental wear data and mechanical fields computed from blanking simulation. Then, a damage criterion, namely the shear failure model, has been calibrated by an original method based on stress triaxiality analysis and shear height value measured from blanked edge profile. Finally, punch wear predictions have been discussed and compared to experimental results.

show abstract

“…Hernandez et al [15] have proposed to decompose the punch worn profile in three zones: face wear, cutting edge wear and flank wear (Fig. 6).…”

Section: Punch Wear Profilementioning

confidence: 99%

Prediction of abrasive punch wear in copper alloy thin sheet blanking

Falconnet

Chambert

Makich

et al. 2015

Wear

View full text Add to dashboard Cite

show abstract

“…The wear, during the blanking process, causes the change of cutting surface quality and the burr height (Ref [8][9][10][11][12][13][14][15][16]. As a result of tool cutting edge friction wear the cutting radius increase, which significantly affects on the blanking process energy consumption (Ref 12,13), whereas Hernández et al (Ref 8) studied the effect of punch flank surface wear on the burr height.…”

Section: Introductionmentioning

confidence: 99%

The Quality Issue of the Parts Blanked from Thin Silicon Sheets

Mucha

Jaworski

2017

J. of Materi Eng and Perform

View full text Add to dashboard Cite

In this paper, the wear mechanism of punches made of M3:2 and M2 steel sheet which are used in blanking process of the rotor part of the low-power asynchronous motor was presented. The influence of additional TiN coating on the punch flank surface degradation intensity was described. The punch wear influence on the hardness changes close the material intersection surface was determined. The research results indicate that the tool durability ensures the quality of parts blanked from electrotechnical steel. The results will allow for selection of new tools materials for this type of tools which are used in difficult tribological conditions.

show abstract

“…Production of the sheared blank elements, with a certain quality, requires an optimal process parameters selection [4,6,11,30]. Gréban et al in their work [6] presented the effects of copper alloy elements blanking process.…”

Section: Introductionmentioning

confidence: 99%

“…Tekiner et al [30] described the result of experimental analysis of the aluminum alloy element blanking process. Hernández and other authors [11] presented the influence of the punch cutting edge geometry changes on the cut surface quality. They described the influence of the blanking process clearance and punch diameter.…”

Section: Introductionmentioning

confidence: 99%