Zobrazeno 1 - 10
of 44
pro vyhledávání: '"D. G. Chetwynd"'
Autor:
D G Chetwynd
Publikováno v:
Measurement + Control, Vol 31 (1998)
Externí odkaz:
https://doaj.org/article/1815ca639efa44f6bea44b4332807b87
Autor:
D G Chetwynd
Publikováno v:
Measurement + Control, Vol 24 (1991)
Externí odkaz:
https://doaj.org/article/598b5b4b28da4ec38b0576484763a3ae
Publikováno v:
Precision Engineering. 34:586-591
This paper presents dynamic modeling and vibration analysis methodologies for investigating surface profile fidelity in stylus instruments, using a novel dynamic model that takes account of Hertzian contact stiffness between the stylus tip and surfac
Publikováno v:
Mechanism and Machine Theory. 45:941-954
This paper presents a novel 3-DOF PKM module named the A3 head that can be employed to form a 5-axis manufacturing cell for large structural component machining. The architecture behind the A3 head is a 3-RPS parallel mechanism. A semi-analytic stiff
Publikováno v:
Precision Engineering. 33:447-458
In order to investigate the thermal effects on the workpiece during ultraprecision grinding processes, an analytical thermal model is firstly developed. Based on the established model, both the steady-state and the transient temperature distributions
Publikováno v:
Wear. 266:555-559
A numerical simulation has been used to systematically investigate the characteristics of a stylus surface profiling instrument. The model bridges together previously used concepts to incorporate both tip size and tip dynamics. The dynamics incorpora
Publikováno v:
Science Bulletin. 53:2565-2574
Stiffness modeling is one of the most significant issues in the design of parallel kinematic machine (PKM). This paper presents a semi-analytical approach that enables the stiffness of PKM with complex machine frame geometry to be estimated effective
Publikováno v:
Wear. 265:497-506
This study reports on the friction and wear behaviour of nanoscaled pyramidal surface features of chromium nitride thin films in relation to the dimensions of those features. The pyramidal features were created, and their size controlled, by PVD base
Publikováno v:
Science in China Series E: Technological Sciences. 51:288-301
A novel reconfigurable 5-DOF hybrid manipulator—TriVariant-B is composed of a 2-DOF spherical parallel mechanism which is serially connected with a 3-DOF open-loop kinematic chain undergoing one translation and two rotations by a prismatic joint. T
Publikováno v:
Mechanism and Machine Theory. 42:1643-1652
This paper revisits the optimal kinematic design of a 3-DOF parallel mechanism that forms the main body of a 5-DOF reconfigurable hybrid robot named the TriVariant. The dimensional synthesis of the 3-DOF parallel mechanism is carried out by introduci