Design and testing of a positioning system based on a quasi kinematic guide and a clamp plate suspended by compliant straps for in-line metrology systems

Guamán-Lozada, Darío; Ahuett–Garza, Horacio; Castro-Martin, Ana Pamela; Ruiz-Carrizal, Julio; Márquez-Alderete, Maria Fernanda; Anaya-Aranda, José Gustavo; Castilla, Emilio González de

doi:10.1016/j.mfglet.2020.03.006

Cited by 4 publications

(2 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In particular, quasi-kinematic design is based on line contacts, hence it constraints two DoFs. For instance, a quasi-kinematic coupling [5, 6] is obtained through the connection between a convex element and a concave surface (groove) obtained on the second element of the coupling, which results in several arcs of contact. Compared to traditional surface contacts, the reduction to line contacts limits the load capacity of such designs; however, higher repeatability is allowed (about 0.5 micron) [7].…”

Section: Introductionmentioning

confidence: 99%

Precise positioning in a robotized laser-cutting machine allowed by a three-V-shaped-groove kinematic coupling: a feasibility study

Benedictis

Ferraresi

2023

Robotica

View full text Add to dashboard Cite

Devices known as kinematic couplings offer accurate, repeatable, and stiff connections between two parts. They are characterized by point contacts and enable great repeatability with errors less than 1 micron, in contrast to conventional coupling systems like alignment pins or those based on elastic deformation. In this study, a robotized laser-cutting machine is equipped with a three-groove kinematic coupling design to increase the precision of workpiece placement. Given the application’s requirements, a preliminary design of the coupling is defined. An analytical approach is provided for calculating stresses and deflections at the locations where balls and grooves make contact, and it is then utilized to calculate positioning errors caused by the mechanical structure’s elastic deformation under various loading conditions. The outcomes of the simulations are finally discussed and highlight the efficacy of the solution tested.

show abstract

Section: Introductionmentioning

confidence: 99%

Precise positioning in a robotized laser-cutting machine allowed by a three-V-shaped-groove kinematic coupling: a feasibility study

Benedictis

Ferraresi

2023

Robotica

View full text Add to dashboard Cite

show abstract

“…Consequently, research in this area has remained a prominent focus for many nations (Paisner et al,1995;Andre et al,1997). The optical path of high-power solid-state laser systems consists of numerous opto-mechanical assemblies, and the precision of their assembly directly influences the laser's pointing accuracy (Guamán et al,2020). Kinematic couplings, a prevalent mechanical assembly technique, have gained widespread use in the precision assembly of opto-mechanical assemblies due to their simplicity, efficiency, and repeatability (Slocum et al,2010;Saha et al,2018;Yu et al,2013;Zhang et al,2020).…”

Section: Introductionmentioning

confidence: 99%

Optimization Design of Kinematic Couplings for Improving Repetitive Positioning Accuracy of Opto-mechanical Assemblies

Fan,

Yang,

Yuan

et al. 2023

Preprint

View full text Add to dashboard Cite

Kinematic coupling, as an efficient form of connection, is frequently employed for the repeated assembly and accurate positioning of replaceable opto-mechanical assemblies within high-power solid-state laser systems. During the kinematic coupling process, uncertainties in the mechanical behavior within the contact region often hinder the attainment of consistent positioning accuracy, potentially leading to an inability to meet operational requirements. This study aims to enhance the repetitive positioning precision of opto-mechanical assemblies kinematic couplings. To achieve this goal, a predictive model for repetitive positioning accuracy is established, accounting for uncertainties in contact region forces. Based on this model, an optimization design of kinematic couplings is conducted to mitigate these challenges. Initially, accounting for uncertainties in mechanical parameters within the contact region, we formulate a static analysis computational model to elucidate the probabilistic distribution of these parameters. Subsequently, employing Hertz contact theory and Holm-Archard wear theory, we quantify the elastic deformation and equivalent wear for each contact region through the calculation of normal pressures. Building upon this foundation, we establish a predictive model for repetitive positioning accuracy. Finally, optimization design is carried out on the friction coefficient of contact surfaces and the structural dimensions of positioning elements. The proposed optimization design is validated through experimental verification. The findings demonstrate that optimization of structural dimensions and contact surface friction coefficients resulted in enhanced repetitive positioning accuracy of 35.9%, effectively ameliorating the assembly quality. This study contributes a quantifiable analytical approach to the prediction and optimization design of repetitive positioning accuracy in kinematic couplings.

show abstract

Analysis and optimization of repetitive positioning precision for kinematic couplings of opto-mechanical components considering uncertainty

Fan,

Yang,

Yuan

et al. 2024

Precision Engineering

View full text Add to dashboard Cite

Design and testing of a positioning system based on a quasi kinematic guide and a clamp plate suspended by compliant straps for in-line metrology systems

Cited by 4 publications

References 16 publications

Precise positioning in a robotized laser-cutting machine allowed by a three-V-shaped-groove kinematic coupling: a feasibility study

Precise positioning in a robotized laser-cutting machine allowed by a three-V-shaped-groove kinematic coupling: a feasibility study

Optimization Design of Kinematic Couplings for Improving Repetitive Positioning Accuracy of Opto-mechanical Assemblies

Analysis and optimization of repetitive positioning precision for kinematic couplings of opto-mechanical components considering uncertainty

Contact Info

Product

Resources

About