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    국내학술지 제목 게시판 내용
    제목(국문)
    제목(영문) A Local and Analytical Curvature-Smooth Method with Jerk-Continuous Feedrate Scheduling along Linear Toolpath
    저자 (Yong Zhang ,Institute of Chemical Engineering, Dalian University of Technology, Dalian 116012, China ) ▷공저자네트워크등록하기
    - (Peiqing Ye ,Beijing Key Lab of Precision/Ultra-precision Manufacturing Equipment and Control, Tsinghua University ) ▷공저자네트워크등록하기
    - (Hui Zhang ,Department of Mechanical Engineering, Tsinghua University ) ▷공저자네트워크등록하기
    - (Mingyong Zhao ,Beijing Key Lab of Precision/Ultra-precision Manufacturing Equipment and Control, Tsinghua University ) ▷공저자네트워크등록하기
    초록
    초록(영문)

    Linear toolpath, which is always in forms of a large amount GOJ codes, is most popular in practical Computer Numerical Control
    (CNC) systems. The linear toolpath discontinuity will bring the unavoidable fluctuations on velocity and acceleration, leading to
    unsatisfied machining efficiency and quality. To improve the GOJ machining, corners are normally smoothened by various smooth
    curves and in this paper, a novel two-step method including path-smoothing and feedrate scheduling is proposed In path-smoothing,
    a B-spline curve is adopted to blend sharp corners locally and the smooth curvature along transition toolpath is obtained With
    constrained chord error, the analytical curvature extreme is proved to occur at the B-spline midpoint and optimal curvature extreme
    is searched to enhance machining efficiency. Infeedrate scheduling, based on the extreme points, a look-ahead methodology is utilized
    to determine the reachable feedrate at these critical points and a jerk-continuous scheduling scheme is developed afterwards. To verifj;
    the proposed method, tracking and machining experiments are conducted to demonstrate the efficiency, contour performance as well
    as machining quality compared to point-to-point and curvature-continuous methods.

    keyword Smooth curvature, Local transition methods, Feedrate scheduling, Linear toolpath, Machining efficiency
    저널명 International Journal of Precision Engineering and Manufacturing ▷관련저널보기
    VOL 19
    PAGE 1529
    발표년도 2018
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