Numerical controller enabling increase in number of analysis digits of program instruction

Patent metadata

Field	Value
Publication number	US-2017255180-A1
Application number	US-201715446468-A
Country	US
Kind code	A1
Filing date	Mar 1, 2017
Priority date	Mar 4, 2016
Publication date	Sep 7, 2017
Grant date	—

Abstract

A numerical controller includes a division setting unit which sets division information for dividing a machining region into a plurality of areas, an area division unit which divides a machining region into a plurality of areas based on division information, a program division unit which generates divided programs respectively used for machining control in the areas, an area coordinate system setting unit which sets a virtual coordinate system in the plurality of areas, and an operation precision setting unit which sets operation precision, and performs internal operation for controlling an operation of a machine in accordance with the virtual coordinate system and the operation precision to control each axis of the machine.

First claim

1 . A numerical controller which controls at least one drive shaft to control a machine, the machine machining a workpiece placed in a machining region, based on a program composed of at least one block, the numerical controller comprising:
a division setting unit which sets division information which is information related to a plurality of areas obtained when the machining region is divided; an area coordinate system setting unit which sets a virtual coordinate system in the plurality of areas based on the division information; an operation precision setting unit which sets operation precision based on the division information; an instruction analysis unit which analyzes divided programs, the divided programs being obtained by dividing the program based on the division information, in accordance with the virtual coordinate system and the operation precision and outputs instruction data for instructing an operation of the machine based on an analysis result; an interpolation unit which calculates interpolation data representing a position of the drive shaft on a moving path in each interpolation period in accordance with the virtual coordinate system and the operation precision, based on the instruction data; and an acceleration/deceleration unit which performs adjustment of a speed of the drive shaft in each interpolation period with respect to the interpolation data in accordance with the virtual coordinate system and the operation precision.

2 . The numerical controller according to claim 1 , further comprising:
a program division unit which generates divided programs respectively used for machining control in the areas based on the program and the division information.

3 . The numerical controller according to claim 2 , wherein the program division unit is configured such that with relation to a block for instructing movement of the drive shaft among a plurality of blocks included in the program, in a case where the movement is performed over two or more areas among the plurality of areas, the program division unit divides a path of the movement into a plurality of paths on the two or more areas, generates a plurality of blocks for instructing movement on the plurality of paths, the paths being obtained through the division, and inserts the plurality of blocks into respective programs respectively used for machining control in the two or more areas so as to generate divided programs.

Assignees

• Fanuc Corp

Inventors

• Miyake Masahiko

Classifications

• G05B2219/41481

  Divide command, block in subcommands, subblocks · CPC title

• G05B19/4086 Primary

  Coordinate conversions; Other special calculations · CPC title

• G05B2219/34085

  Software interpolator · CPC title

• G06F7/535

  Dividing only · CPC title

• G05B19/19 Primary

  characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path · CPC title