Results 1 to 10 of about 43,020 (260)

A New Kinematic Synthesis Model of Spatial Linkages for Designing Motion and Identifying the Actual Dimensions of a Double Ball Bar Test Based on the Data Measured

open access: yesMachines, 2023
This paper presents the new synthesis models of spatial linkages for designing measurement motion functions and ranges and identifying the actual dimension parameters.
Zuping Liao, Shouchen Tang, Delun Wang
doaj   +3 more sources

New identification method for computer numerical control geometric errors [PDF]

open access: yesMeasurement + Control, 2021
To address the problems of the low accuracy of geometric error identification and incomplete identification results of the linear axis detection of computer numerical control (CNC) machine tools, a new 21-item geometric error identification method based ...
Hongtao Yang   +5 more
doaj   +3 more sources

Assessment of Laser Galvanometer Scanning System Accuracy Using Ball-Bar Standard [PDF]

open access: yesApplied Sciences, 2021
The laser projector based on the laser galvanometer scanning system enables the projection of CAD-based laser images onto geometrical objects. Furthermore, the system can perform a scan of components in order to control proper positioning (e.g., welded ...
Konrad Kobiela   +4 more
doaj   +2 more sources

Static Analysis of Six Bar Tensegrity Ball Structure Robot

open access: yesSukkur IBA Journal of Emerging Technologies, 2020
All pre-stressed structures called as tensegrity structures have been introducing into robotics, modern architectural designs, and medical necessities called as bio-tensegrity, space structure alternates, and many other emerging technologies because of ...
Muhammad Basit Chandio   +7 more
doaj   +3 more sources

The laser ball bar: a new instrument for machine tool metrology

open access: yesPrecision Engineering, 1994
Abstract Current techniques for mapping the volumetric positioning errors of machine tools are time and labor intensive. To address these shortcomings, a linear displacement measuring device is introduced to rapidly and easily determine tool positions via trilateration.
John C Ziegert
exaly   +3 more sources

COMPARATIVE STUDY OF BAR, POSITIONER AND BALL ATTACHMENT IN SOLITARY VERSUS SPLINTED IMPLANT ASSISTED MANDIBULAR OVERDENTURE (IN VITRO STUDY) [PDF]

open access: yesAlexandria Dental Journal, 2021
Introduction: The conventional treatment for completely edentulous patients is complete denture. But patients can have substantial difficulties using their conventional complete dentures due to a lack of retention, support, and stability and the related ...
Ahmed AbdelHakim   +2 more
doaj   +1 more source

Accuracy Assessment of Articulated Industrial Robots using the Extended- and the Loaded-Double-Ball-Bar

open access: yesJournal of Machine Engineering, 2022
This research paper outlines the methodology and application of geometric and static accuracy assessment of articulated industrial robots using the Extended-Double-Ball-Bar as well as the Loaded-Double-Ball-Bar.
Johann August Marwitz   +6 more
doaj   +1 more source

Stimulus Complexity and Mouse Strain Drive Escalation of Operant Sensation Seeking Within and Across Sessions in C57BL/6J and DBA/2J Mice

open access: yesFrontiers in Behavioral Neuroscience, 2020
Sensation seeking is a heritable trait that is genetically correlated with substance use; the shared genetic mechanisms underlying these traits are largely unknown.
Price E. Dickson, Guy Mittleman
doaj   +1 more source

Discovery of a Role for Rab3b in Habituation and Cocaine Induced Locomotor Activation in Mice Using Heterogeneous Functional Genomic Analysis

open access: yesFrontiers in Neuroscience, 2020
Substance use disorders are prevalent and present a tremendous societal cost but the mechanisms underlying addiction behavior are poorly understood and few biological treatments exist.
Jason A. Bubier   +5 more
doaj   +1 more source

Synthesis Theory and Optimum Design of Four-bar Linkage with Given Angle Parameters [PDF]

open access: yesMechanical Sciences, 2019
In this paper, a synthesis method is proposed for the 5-point-contact four-bar linkage that approximates a straight line with given angle parameters. The given parameters were the angles and the location of the Ball point.
L. Yin   +6 more
doaj   +1 more source

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