公开(公告)号：US20220161381A1

公开(公告)日：2022-05-26

申请号：US17529558

申请日：2021-11-18

申请人： UT-Battelle, LLC

发明人： Jaydeep M. Karandikar ,  Thomas A. Feldhausen ,  Kyle S. Saleeby ,  Kevin S. Smith ,  Tony L. Schmitz

IPC分类号： B23Q17/09 ,  B23Q17/12 ,  B23Q15/12 ,  G06N20/00

摘要： A Bayesian learning approach for stability boundary and optimal parameter identification in milling without the knowledge of the underlying tool dynamics or material cutting force coefficients. Different axial depth and spindle speed combinations are characterized by a probability of stability which is updated based upon whether the result is stable or unstable. A likelihood function incorporates knowledge of stability behavior. Numerical results show convergence to an analytical stability lobe diagram. An adaptive experimental strategy identifies optimal operating parameters that maximize material removal rate. An efficient and robust learning method to identify the stability lobe diagram and optimal operating parameters with a limited number of tests/data points.

公开(公告)号：US20220274202A1

公开(公告)日：2022-09-01

申请号：US17681708

申请日：2022-02-25

申请人： Mazak Corporation ,  UT-Battelle, LLC

发明人： David A. Wilson ,  Joseph C. McNay ,  Adam M. McGrath ,  Thomas J. Reckers ,  Thomas A. Feldhausen ,  Kyle S. Saleeby ,  Seiichi Hattori ,  Shunsuke Koike ,  Masaharu Onji

IPC分类号： B23K26/342 ,  B23K26/211 ,  B23K9/10 ,  B23K26/03 ,  B23K26/00 ,  B23K9/12 ,  B23Q5/04 ,  B33Y30/00 ,  B33Y50/02 ,  B33Y10/00 ,  G06T7/00

摘要： An additive manufacturing machine that includes a wire supply including a wire drive configured to advance a wire at a wire feed rate and a wire heater configured to apply resistive heating to heat the wire. The additive manufacturing machine includes an additive head for emitting a laser beam to weld the wire to a substrate, a sensor configured to detect a weld parameter, and a controller operatively connected to the wire supply, additive head, and sensor. The controller is configured to determine a failure mode of the weld as the laser beam welds the wire to the substrate based at least in part upon the weld parameter. In response to determining the failure mode, the controller is configured to adjust at least one of the wire feed rate, the resistive heating, and a power of the laser beam as the laser beam welds the wire to stabilize the weld.