The grinding of mold inserts used for injection molding aims to improve the surface roughness according to precise quality standards. The insert surface must also have a surface topography that facilitates the release of the plastic material at the end of the injection process. In particular, fine machining lines must be parallel to the extraction direction from the mold to avoid the sticking of plastic material and subsequent surface damages compromising the functionality of the finished product. However, this step in the production chain is most often conducted manually. This paper presents an analytical model to grind a truncated cone-shaped mold insert for the mass production of plastic cups. The automated solution consists of a flexible robotic system equipped with a rotating external axis to improve the accessibility of the tool to the surface to be machined. The tool path programming requires the development of an analytical model considering the simultaneous motion of the insert and the robot joints. The effectiveness of the developed model is evaluated in terms of final surface quality, grinding lines direction, and total process time. The automated strategy developed can be easily implemented with machine tools and applied to inserts with different axisymmetric geometries.

An Analytical Model for Robot-Based Grinding of Axisymmetric Mold Inserts Using a Rotary Unit / Tamassia, E.; Hahnel, S.; Pini, F.; Grunwald, T.; Bergs, T.; Leali, F.. - (2022), pp. 605-614. ((Intervento presentato al convegno 2nd International Conference on Design Tools and Methods in Industrial Engineering, ADM 2021 tenutosi a ita nel 2021 [10.1007/978-3-030-91234-5_60].

An Analytical Model for Robot-Based Grinding of Axisymmetric Mold Inserts Using a Rotary Unit

Pini F.;Leali F.
2022

Abstract

The grinding of mold inserts used for injection molding aims to improve the surface roughness according to precise quality standards. The insert surface must also have a surface topography that facilitates the release of the plastic material at the end of the injection process. In particular, fine machining lines must be parallel to the extraction direction from the mold to avoid the sticking of plastic material and subsequent surface damages compromising the functionality of the finished product. However, this step in the production chain is most often conducted manually. This paper presents an analytical model to grind a truncated cone-shaped mold insert for the mass production of plastic cups. The automated solution consists of a flexible robotic system equipped with a rotating external axis to improve the accessibility of the tool to the surface to be machined. The tool path programming requires the development of an analytical model considering the simultaneous motion of the insert and the robot joints. The effectiveness of the developed model is evaluated in terms of final surface quality, grinding lines direction, and total process time. The automated strategy developed can be easily implemented with machine tools and applied to inserts with different axisymmetric geometries.
2nd International Conference on Design Tools and Methods in Industrial Engineering, ADM 2021
ita
2021
605
614
Tamassia, E.; Hahnel, S.; Pini, F.; Grunwald, T.; Bergs, T.; Leali, F.
An Analytical Model for Robot-Based Grinding of Axisymmetric Mold Inserts Using a Rotary Unit / Tamassia, E.; Hahnel, S.; Pini, F.; Grunwald, T.; Bergs, T.; Leali, F.. - (2022), pp. 605-614. ((Intervento presentato al convegno 2nd International Conference on Design Tools and Methods in Industrial Engineering, ADM 2021 tenutosi a ita nel 2021 [10.1007/978-3-030-91234-5_60].
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1281811
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 0
  • ???jsp.display-item.citation.isi??? ND
social impact