US 11,841,693 B2
Computerized system and method for generating an undesirable chatter free milling CNC program for use in machining a workpiece
Michael Berman, Kfar Yona (IL)
Assigned to SOLIDCAM LTD., Or Yehuda (IL)
Filed by SOLIDCAM LTD., Or Yehuda (IL)
Filed on Nov. 21, 2022, as Appl. No. 17/991,093.
Application 17/991,093 is a continuation of application No. 17/358,299, filed on Jun. 25, 2021, granted, now 11,550,292.
Application 17/358,299 is a continuation of application No. 16/527,550, filed on Jul. 31, 2019, granted, now 11,048,224, issued on Jun. 29, 2021.
Application 16/527,550 is a continuation of application No. 15/525,514, granted, now 10,416,648, issued on Sep. 17, 2019, previously published as PCT/IL2017/050345, filed on Mar. 20, 2017.
Prior Publication US 2023/0081968 A1, Mar. 16, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G05B 19/404 (2006.01)
CPC G05B 19/404 (2013.01) [G05B 2219/33099 (2013.01); G05B 2219/41256 (2013.01); G05B 2219/45145 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A computerized method of machining a workpiece comprising:
employing an historical mapping, based on empirical data obtained from machining activity at an earlier time, said historical mapping indicating;
pairings of depth of cut and rpm at which undesirable chatter (UDC) did not occur during machining activity at an earlier time using at least one given type of milling machine, at least one given type of cutting tool and at least one given type of workpiece material; and
pairings of depth of cut and rpm at which undesirable chatter (UDC) did occur during machining activity at an earlier time using said at least one given type of milling machine, said at least one given type of cutting tool and said at least one given type of workpiece;
prior to commencing machining of said workpiece, programming a machine tool to machine said workpiece using one of said at least one given type of milling machine, one of said at least one given type of cutting tool and one of said at least one given type of workpiece material at at least one depth of cut and rpm, which, based on said historical mapping, avoid undesirable chatter, said programming comprising ascertaining a suitable rpm for a given depth of cut which will not create UDC by:
employing a first plurality of known pairings of depth of cut and rpm, which are known from said historical mapping for said given type of milling machine, said given type of cutting tool and said given type of workpiece material not to create UDC; and
employing a second plurality of known pairings of depth of cut and rpm, which are known from said historical mapping for said given type of milling machine, said given type of cutting tool and said given type of workpiece material to create UDC; and
operating said machine tool in accordance with said programming to machine said workpiece.