Machine tool and numerical control apparatus for controlling the same
AssigneeFanuc Corporation
InventorYasuo HASEGAWA
Life of this patent
Estimating the term…
Abstract
In wire-electrical discharge machine and a numerical control apparatus thereof and a numerical control apparatus for controlling a machine tool, optional minute blocks are automatically created in front of and behind a connecting point, i.e., a joint of a block to which an offset command is instructed, and an offset value is exchanged between the minute blocks so that a correct offset value is set in a desired block.
Claims3
A numerical control apparatus of a machine tool for machining a work by a cutting tool along a machining path including an offset, the numerical control apparatus comprising:
- a unit configured to, add a block that divides, when an offset value instructed in a first front block is different from an offset value instructed in a second rear block in two contact machining path blocks, the two blocks at points in front of and behind a connecting point of the two blocks in an optional distance, respectively, and
- gradually change the offset value from the offset value instructed in the front block to the offset value instructed in the rear block, in the area between the points that newly divides the front block and the rear block, respectively.
A numerical control apparatus of a machine tool for machining a work by a cutting tool along a machining path including an offset, the numerical control apparatus comprising:
- a unit configured to add a function block, when an offset value instructed in a first front block is different from an offset value instructed in a second rear block in two contact machining path blocks, that gradually change the offset value from the offset value instructed in the front block to the offset value instructed in the rear block, in the area between a point that divides the first front block an optional distance in front of a connecting point of the two blocks in a travel direction and a start point of a block behind the point.
A numerical control apparatus of a machine tool for machining a work by a cutting tool along a machining path including an offset, the numerical control apparatus comprising:
- a unit configured to add a block, when an offset value instructed in a first front block is different from an offset value instructed in a second rear block in two contact machining path blocks, that gradually changes the offset value from the offset value instructed in the front block to the offset value instructed in the rear block, in the area between the end point of the front block and a point that divides the second rear block an optional distance behind a connecting point of the two blocks in a travel direction.
Dependencies are inferred from the claim text.