High-temperature gripper for collaborative robots in additive manufacturing

Schorr, Logan; Johnson, Bradley; McFall, Jesse; Shepherd, David; Hadimani, Ravi L.

doi:10.1007/s00170-023-11975-0

Cited by 2 publications

(2 citation statements)

References 22 publications

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“…Therefore, the proposed method has industrial applicability and complies with the sustainable development goals 7 and 12 [38][39][40]. The simulation software [41,42] is also recommended to predict the optimum process parameters of RFW, such as the rotational speed, feed rate, axial pressure, welding time, or friction time. In addition, integrating RFW with automation and robotics systems [43] is also a promising research topic because it could enhance the pro- This study utilizes a CNC turning machine [34][35][36] to weld PEEK polymer rods.…”

Section: Resultsmentioning

confidence: 97%

Characterization of the Polyetheretherketone Weldment Fabricated via Rotary Friction Welding

Kuo,

Liang,

Huang

2023

Polymers

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Polyether ether ketone (PEEK) is frequently employed in biomedical engineering due to its biocompatibility. Traditionally, PEEK manufacturing methods involve injection molding, compression molding, additive manufacturing, or incremental sheet forming. Few studies have focused on rotational friction welding (RFW) with PEEK plastics. Based on years of RFW practical experience, the mechanical properties of the weldment are related to the burn-off length. However, few studies have focused on this issue. Therefore, the main objective of this study is to assess the effects of burn-off length on the mechanical properties of the welded parts using PEEK polymer rods. The welding pressure can be determined by the rotational speed according to the proposed prediction equation. The burn-off length of 1.6 mm seems to be an optimal burn-off length for RFW. For the rotational speed of 1000 rpm, the average bending strength of the welded parts was increased from 108 MPa to 160 Mpa, when the burn-off length was increased from 1 mm to 1.6 mm and the cycle time of RFW was reduced from 80 s to 76 s. A saving in the cycle time of RFW of about 5% can be obtained. The bending strength of the welded part using laser welding is lower than that using RFW, because only the peripheral material of the PEEK cylinder was melted by the laser.

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Section: Resultsmentioning

confidence: 97%

Characterization of the Polyetheretherketone Weldment Fabricated via Rotary Friction Welding

Kuo,

Liang,

Huang

2023

Polymers

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“…Fiber laser [44][45][46][47] or carbon dioxide laser [48][49][50] was also suggested to join PEEK polymeric rods. In addition, COMSOL [51] or ANSYS [52] simulation software can be used to predict the maximum interface temperature, total deformation, or equivalent von Mises stress [53] under different rotational speed, axial pressure, friction time, welding time, feed rare, or burn-off length. The tensile testing of the welded parts can also be performed to assess the welding quality.…”

Section: Resultsmentioning

confidence: 99%

Rotary Friction Welding of Polyetheretherketone Biopolymer Rods Using Variable Rotational Speed

Kuo,

Liang,

Huang

et al. 2023

Polymers

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Polyetheretherketone (PEEK) is a promising biomaterial due to its excellent mechanical properties. Most PPEK manufacturing methods include additive manufacturing, injection molding, grinding, pulse laser drilling, or incremental sheet forming. Rotary friction welding (RFW) is a promising bonding technique in many industries. However, very few studies have focused on the RFW of PEEK. Conventionally, the number of revolutions is fixed during the welding process. Remarkably, the rotary friction welding of PEEK polymer rods using an innovative variable rotational speed is investigated in this study. The average bending strength of the welded part using a three-stage transformation rotational speed was enhanced by about 140% compared with a rotational speed of 1000 rpm. The advantage of computer numerical controlled RFW of PEEK using variable rotational speed is a reduced cycle time of RFW. A reduction in cycle time of about 6% can be obtained using the proposed RFW with a three-stage transformation rotational speed. The innovative approach provides low environmental pollution and high energy efficiency and complies with sustainable development goals.

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High-temperature gripper for collaborative robots in additive manufacturing

Cited by 2 publications

References 22 publications

Characterization of the Polyetheretherketone Weldment Fabricated via Rotary Friction Welding

Characterization of the Polyetheretherketone Weldment Fabricated via Rotary Friction Welding

Rotary Friction Welding of Polyetheretherketone Biopolymer Rods Using Variable Rotational Speed

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