IP Library › Granted Patent US 12,248,293
Granted Patent B2
US 12,248,293 · App. 18/119,980 · Granted Mar 11, 2025

Computerized tool path generation

Inventors: Michael Berman (Kfar Yona, IL); Doron Osovlanski (Givat Shmuel, IL); Christopher Matthew Calderone (Levittown, PA); Anthony Joseph Calderone (Yardley, PA)
Assignee: SOLIDCAM LTD.
G05B19/18G05B19/4093G05B2219/35097G05B2219/35106G05B2219/35215Y02P90/02
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Quick Facts
Patent No.
US 12,248,293
App. No.
18/119,980
Granted
Mar 11, 2025
Kind
B2
Abstract

An automated computer-implemented method for generating commands for controlling a computer numerically controlled milling machine to fabricate a machined object from a workpiece, the machined object being configured to facilitate subsequent finishing into a finished object, the method including defining a surface of the finished object, defining an offset surface defining an inner limiting surface of the machined object, defining a scallop surface defining an outer limiting surface of the machined object and calculating a tool path for the milling machine which produces multiple step-up cuts in the workpiece resulting in the machined object, wherein surfaces of the machined object all lie between the inner limiting surface and the outer limiting surface and the number of step-up cuts in the workpiece and the areas cut in each of the step-up cuts are selected to generally minimize the amount of workpiece material that is removed from the workpiece.

Claims (20)

1. An automated computer-implemented method for controlling a computer numerically controlled milling machine to fabricate an object having a semi-open region from a workpiece, the method comprising:

estimating, using a computer, a first machining time for machining said semi-open region using a trochoidal type tool path;

estimating, using a computer, a second machining time for machining said semi-open region using a spiral type tool path;

automatically selecting, using a computer, an optimal tool path having a shorter machining time, said shorter machining time being the shorter of said first machining time and said second machining time; and

machining said workpiece by directing a computer controlled machine tool using said optimal tool path.

2. An automated computer-implemented method for controlling a computer numerically controlled milling machine to fabricate an object having a semi-open region according to claim 1 and wherein said spiral type tool path is characterized in that it includes:

an initial spiral type tool path portion characteristic of machining a closed region, included within said semi-open region and having a wall separating at least one side thereof from an open edge of said semi-open region; and

a plurality of tool paths suitable for removal of said wall.

3. An automated computer-implemented method for controlling a computer numerically controlled milling machine to fabricate an object having a semi-open region according to claim 2 and wherein said plurality of tool paths are suitable for cutting mutually spaced channels in said wall, thereby defining a plurality of wall segments, and thereafter removing the plurality of wall segments.

4. An automated computer-implemented method for controlling a computer numerically controlled milling machine to fabricate an object having a semi-open region according to claim 3 and wherein said plurality of tool paths include spiral tool paths suitable for removing the plurality of wall segments.

5. An automated computer-implemented apparatus for controlling a computer numerically controlled milling machine to fabricate an object having a semi-open region from a workpiece, the apparatus comprising a tool path configuration engine operative for:

estimating, using a computer, a first machining time for machining said semi-open region using a trochoidal type tool path;

estimating, using a computer, a second machining time for machining said semi-open region using a spiral type tool path;

automatically selecting, using a computer, an optimal tool path type having a shorter machining time, said shorter machining time being the shorter of said first machining time and said second machining time; and

machining said workpiece by directing a computer controlled machine tool using said optimal tool path.

6. An automated computer-implemented apparatus for controlling a computer numerically controlled milling machine to fabricate an object having a semi-open region according to claim 5 and wherein said generally spiral type tool path is characterized in that it includes:

an initial spiral type tool path portion characteristic of machining a closed region, included within said semi-open region and having a wall separating at least one side thereof from an open edge of said semi-open region; and

a plurality of tool paths suitable for removal of said wall.

7. An automated computer-implemented apparatus for controlling a computer numerically controlled milling machine to fabricate an object having a semi-open region according to claim 6 and wherein said plurality of tool paths are suitable for cutting mutually spaced channels in said wall, thereby defining a plurality of wall segments and thereafter removing the plurality of wall segments.

8. An automated computer-implemented apparatus for controlling a computer numerically controlled milling machine to fabricate an object having a semi-open region according to claim 7 and wherein said plurality of tool paths include spiral tool paths suitable for removing the plurality of wall segments.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 12, 2023
From: BERMAN, MICHAEL; OSOVLANSKI, DORON; CALDERONE, CHRISTOPHER MATTHEW; CALDERONE, ANTHONY JOSEPH
To: SOLIDCAM LTD.
Reel/Frame 065191/0553 →
Continuity (6)
Continuation 16807688 · Mar 3, 2020
Continuation 15598749 · May 18, 2017
Division 14013704 · Aug 29, 2013
Continuation 13916918 · Jun 13, 2013
Division 13036726 · Feb 28, 2011
Related Publication 20230280714A1 · Sep 7, 2023
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