Using NC-path Deformation for Compensating Tool Deflections in Micromilling of Hardened Steel

Biermann, Dirk; Krebs, Eugen; Sacharow, Alexei; Kersting, Petra

doi:10.1016/j.procir.2012.04.022

Cited by 21 publications

(5 citation statements)

References 9 publications

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“…In this study, the author proposes a prediction of the robot deformation and adapts the toolpath to obtain the desired geometry. Biermann et al [15] also present a toolpath adaptation method to compensate tool flexion in micro-milling machining. Moreover, the author proposes to use the control point of B-spline curves to adapt the toolpath to balance the tool flexion.…”

Section: State Of the Artmentioning

confidence: 99%

Adaptation of machining toolpath to distorted geometries: application to remove a constant thickness on rough casting prosthesis

Azzam

Chaves‐Jacob

Boukebbab

et al. 2014

Int J Adv Manuf Technol

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This study proposes a method to adapt the geometry of the toolpath to a specified target. In the case study presented, the geometrical target is to remove a constant thickness on the rough workpiece. This case is normally present in the polishing of the femoral component of knee prostheses. In fact, an operator carries out these operations manually. The aim of this study is to contribute to the automation of prosthesis production, notably, in the preparation of surface polishing. The proposed method can deform and adapt a toolpath to ensure the required geometry of the machined surface. The proposed toolpath deformation method is composed of three steps: alignment, toolpath deformation, and toolpath smoothing. Alignment between the measured surface of the roughcast prostheses and the nominal toolpath is carried out by an Iterative Closest Point (ICP) algorithm. The principle of this algorithm is to find the optimal rigid transformation to readjust the toolpath on the measured surface. Subsequently, the toolpath is deformed to remove the constant thickness of the roughcast prostheses. Next, to increase the machined quality, a smoothing stage is carried out on the obtained toolpath. Experimental tests on industrial prostheses geometry are conducted to validate the effectiveness of this method.

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Section: State Of the Artmentioning

confidence: 99%

Adaptation of machining toolpath to distorted geometries: application to remove a constant thickness on rough casting prosthesis

Azzam

Chaves‐Jacob

Boukebbab

et al. 2014

Int J Adv Manuf Technol

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show abstract

“…Tool deflection also turns out to be a major problem when it comes to micro level milling process. Even cemented carbide is used, for the tool diameter 1mm and 8mm length cutting edge, tool deflected up to 100µm while cutting high speed steel 63 HRC [16]. Even though titanium alloy is having hardness far less than high speed steel, the amount of deflection still cannot be totally neglected.…”

Section: Tool Size Effectmentioning

confidence: 99%

Laser Assisted Machining of Titanium Alloys

Warap

Mohid

Rahim

2013

MSF

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Laser assisted machining is categorized in preheat machining process. The laser beam used to heat up work materials is very flexible in providing a localized heat area. However the combination between two processes which has totally different fundamental has contributed to complex processing characteristics. In the case of hard to machined metal processing, problems in surface integrity and accuracy are frequently arise. Tool ware and work material properties changes are some of the issue that drove engineers and researchers to seek for optimized processing parameters. This chapter introduces resent finding in research done on laser assisted machining (LAM). Focus is given on laser assisted mechanical machining consist of laser assisted milling (LAM) and laser assisted turning (LAT).

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“…In large, thin-walled parts machining deformation is easy to produce, and cutting parameters are important factors affecting machining deformation. Biermann 6 considered the cutting force is the direct factor causing the machining deformation, and the cutting parameters are the important factors affecting the cutting force. Therefore, Hao 7 established a prediction model of cutting force about cutting parameters, and established the models of milling force and machining deformation based on the cantilever deformation principle.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on cutting factors of multi-layer machining for large aerospace thin-walled structural parts

Yu¹,

Zhong²,

Chen³

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part E:

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Large aerospace thin-walled structures will produce deformation and vibration in the machining process, which will cause machining error. In this paper, a cutting experimental method based on multi-layer machining is proposed to analyze the influence of cutting tool, cutting path, and cutting parameters on machining error in order to obtain the optimal cutting variables. Firstly, aiming at the situation that the inner surface of the workpiece deviates from the design basis, the laser scanning method is used to obtain the actual shape of the inner surface, and the method of feature alignment is designed to realize the unification of the measurement coordinate system and machining coordinate system. Secondly, a series of cutting experiments are used to obtain the machining errors of wall thickness under different cutting tools, cutting paths, and cutting parameters, and the variation of machining errors is analyzed. Thirdly, a machining error prediction model is established to realize the prediction of machining error, and the multi-objective optimization method is used to optimize the cutting parameters. Finally, a machining test was carried out to validate the proposed cutting experimental method and the optimal cutting parameters.

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Using NC-path Deformation for Compensating Tool Deflections in Micromilling of Hardened Steel

Cited by 21 publications

References 9 publications

Adaptation of machining toolpath to distorted geometries: application to remove a constant thickness on rough casting prosthesis

Adaptation of machining toolpath to distorted geometries: application to remove a constant thickness on rough casting prosthesis

Laser Assisted Machining of Titanium Alloys

Experimental study on cutting factors of multi-layer machining for large aerospace thin-walled structural parts

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