Numerical control device for performing control axis switch
AssigneeFanuc Corporation
InventorHideki Kuroki
Life of this patent
Estimating the term…
Abstract
In a numerical control device for performing a control axis switch, each of a plurality of control axis units includes an axis movement amount conversion unit configured to convert a movement amount of a servo motor into a movement amount corresponding to each of the control axis units of the plurality of control axis units, an axis position data storage unit, and a control object axis position data storage unit configured to store an axis position of a control object at a time when the control object is separated from a single drive unit, and an axis position stored in the axis position data storage unit is configured to be updated by using the movement amount of the servo motor, regardless of whether or not the control object is connected by a control axis switch unit to the control axis unit.
Claims3
A numerical control device, comprising:
- a plurality of control axis units configured to respectively control a plurality of control objects;
- and
- a control axis switch unit configured to transmit position commands of the plurality of control axis units to a single drive unit, wherein
- the control axis switch unit is configured to transmit the position commands of the plurality of control axis units to the single drive unit so as to allow the plurality of control objects to be controlled and driven by the single drive unit,
- each of the plurality of control axis units comprises:
- an axis movement amount conversion unit configured to convert a movement amount of a servo motor output from a position detection unit provided in the single drive unit into a movement amount corresponding to each of the control axis units of the plurality of control axis units;
- an axis position data storage unit configured to store the movement amount converted by the axis movement amount conversion unit as a position of the control object;
- and
- a control object axis position data storage unit configured to store an axis position of the control object at a time when the control object is separated from the single drive unit, and
- each of the plurality of control axis units updates the axis position data storage unit with the movement amount of the servo motor output from the position detection unit, regardless of whether or not the control axis unit is connected by the control axis switch unit to the control object, so that the position of the single drive unit is moved to the position that can be connected to the control object on the basis of the position of the control object stored in the position data storage unit and the axis position stored in the control object axis position data storage unit at the time when the control axis is switched so as to allow the single drive unit to be connected to the control object at a specific position during the control axis switch.
Dependencies are inferred from the claim text.