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author:

Tang, Tengfei (Tang, Tengfei.) [1] | Fang, Hanliang (Fang, Hanliang.) [2] | Luo, Haiwei (Luo, Haiwei.) [3] | Song, Yaqing (Song, Yaqing.) [4] | Zhang, Jun (Zhang, Jun.) [5] (Scholars:张俊)

Indexed by:

EI SCIE

Abstract:

To fully disclose potential configurations of parallel mechanisms (PMs) that are performance-comparable to the commercially successful Exechon, a family of one translational two rotational (1T2R) over-constrained Exechon inspired PMs is synthesized through the screw theory. The synthesized PMs are further comparatively analyzed in terms of inverse kinematics, singularity occurrence and reachable workspace based on a unified kinematic model. The kinematic analyses indicate that the inherited overconstraints benefit for eliminating the constraint singularity of all synthesized Exechon inspired PMs and the workspace distribution of an Exechon inspired PM is closely related to its topological arrangement. Based on the kinematic evaluations, a preferred configuration of 2UPR-1RPS PM ('R': revolute joint, 'U': universal joint, 'S': spherical joint, 'P': prismatic actuated joint) is selected as a candidate for 1T2R spindle head. A laboratory prototype is fabricated and experimentally tested to verify the feasibility of the type synthesis and the correctness of the kinematic analyses. By integrating the selected PM with a 2-degree of freedom sliding gantry, a full scale prototype of a novel hybrid kinematic machine tool is developed to perform 5-axis machining tasks. The well match between the machined workpiece and its designed shape fully proves the engineering potential of the synthesized PMs that are expected to be employed as the functional module to construct 5-axis serial-parallel hybrid machining devices.

Keyword:

5-axis machining Exechon Parallel mechanism Type synthesis Unified kinematic analysis

Community:

  • [ 1 ] [Tang, Tengfei]Fuzhou Univ, Sch Mech Engn & Automat, Fuzhou 350116, Peoples R China
  • [ 2 ] [Fang, Hanliang]Fuzhou Univ, Sch Mech Engn & Automat, Fuzhou 350116, Peoples R China
  • [ 3 ] [Song, Yaqing]Fuzhou Univ, Sch Mech Engn & Automat, Fuzhou 350116, Peoples R China
  • [ 4 ] [Zhang, Jun]Fuzhou Univ, Sch Mech Engn & Automat, Fuzhou 350116, Peoples R China
  • [ 5 ] [Luo, Haiwei]Capital Aerosp Machinery Corp Ltd, Beijing 100076, Peoples R China

Reprint 's Address:

  • 张俊

    [Zhang, Jun]Fuzhou Univ, Sch Mech Engn & Automat, Fuzhou 350116, Peoples R China

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Source :

ROBOTICS AND COMPUTER-INTEGRATED MANUFACTURING

ISSN: 0736-5845

Year: 2021

Volume: 72

1 0 . 1 0 3

JCR@2021

9 . 1 0 0

JCR@2023

ESI Discipline: ENGINEERING;

ESI HC Threshold:105

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count: 17

SCOPUS Cited Count: 18

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

Online/Total:104/10045359
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