An automatic tool changer and integrated software for a robotic die polishing station

Ryuh, Beom-Sahng; Park, Sang Min; Pennock, Gordon R.

doi:10.1016/j.mechmachtheory.2005.06.004

Cited by 66 publications

(33 citation statements)

References 6 publications

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“…This type of machine is interesting due to its low cost but in return its geometrical accuracy is reduced (about 0.1 mm). Ryuh et al [6] have used a 6-axis robot on which a pneumatic system was adapted to control the applied polishing force. Nagata et al [7] added a combined control of the tool position and force on a 6-axis robot to polish free-form molds.…”

Section: Fig 1 Production Of Knee Prosthesesmentioning

confidence: 99%

Optimization of pre-polishing parameters on a 5-axis milling machine

Moumen

Chaves‐Jacob

Bouaziz

et al. 2015

Int J Adv Manuf Technol

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Pre-polishing and polishing stages are considered as semi-finishing and finishing stages in workpiece production. As a rule, these operations are carried out manually. These stages are health hazards for the operator and may lead to geometrical defects on workpieces. This paper proposes and optimizes a method to perform these operations on a common 5-axis milling machine. This method uses the flank of a flexible cylindrical tool to link the machine position and the exerted polishing pressure. The toolpath proposed comprises a carrier trajectory on which a loop pattern is repeated. Subsequently, experimental optimization of the pre-polishing cost is proposed, coupled with an estimation of the roughness obtained. Firstly, a screening Design Of Experiments is used to identify the most influential factors of this process. Based on these influential factors, a response surface is used to obtain experimental models to estimate the pre-polishing cost per volume and resulting roughness. These models are used to optimize the pre-polishing factors to reduce the process cost whilst maintaining specific roughness.

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Section: Fig 1 Production Of Knee Prosthesesmentioning

confidence: 99%

Optimization of pre-polishing parameters on a 5-axis milling machine

Moumen

Chaves‐Jacob

Bouaziz

et al. 2015

Int J Adv Manuf Technol

View full text Add to dashboard Cite

show abstract

“…Scientific approaches to realize robot assisted finishing were started more than 30 years ago [3][4][5][6][7][8][9][10][11][12][13][14][15], since articulated robots gained more acceptance in industry. Despite of various published Current automated finishing techniques are almost not applicable on parts with free form surfaces and function relevant edges, as commonly found in moulds and dies.…”

Section: State Of the Artmentioning

confidence: 99%

Robotic finishing process – An extrusion die case study

Wilbert

Behrens

Zymla

et al. 2015

CIRP Journal of Manufacturing Science and Technology

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“…Besides standard milling strategies, researchers used space filling curves, like Peano curves, as tool paths for polishing applications (see [8,25,34]). The authors create a space filling curve in parameter space and map it onto the surface.…”

Section: Related Workmentioning

confidence: 99%

Cycloids for polishing along double-spiral toolpaths in configuration space

Hauth

Linsen

2011

Int J Adv Manuf Technol

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An automated polishing process of free-form surfaces requires a tool path that covers the entire surface equally and forms an overlapping pattern without visible artifacts. The recently presented double-spiral tool paths assure a coverage of the entire surface with a continuous, non-overlapping path and low variation in distance between adjacent traces of the path. We build upon this approach by constructing cycloids of flexible radii that fill the space between adjacent traces. The use of cycloids mimics the cyclic movement when polishing by hand. The approach operates in a precomputed configuration space (c-space) given in form of an adaptive quadrilateral heightfield mesh. Operating in c-space avoids having to deal with the issues of patch-boundary oscillations or long, stretched triangles in non-uniform rational b-spline surface or triangular mesh representations, respectively. Our algorithm computes appropriate spheroids that are intersected with the c-space to compute the cycloids. We derive a smooth representation of the cycloids using arcs in a rational Bézier formulation. We apply our approach to real-world examples to demonstrate its effectiveness in covering the entire surface with the desired polishing movements.

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An automatic tool changer and integrated software for a robotic die polishing station

Cited by 66 publications

References 6 publications

Optimization of pre-polishing parameters on a 5-axis milling machine

Optimization of pre-polishing parameters on a 5-axis milling machine

Robotic finishing process – An extrusion die case study

Cycloids for polishing along double-spiral toolpaths in configuration space

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