Numerical controller having workpiece setting error...

Details Numerical controller having workpiece setting error... Numerical controller having workpiece setting error...

2008-08-15

2011-10-18

Decady, Albert (Department: 2121)

Data processing: generic control systems or specific application

Specific application, apparatus or process

Product assembly or manufacturing

C700S028000, C700S030000, C700S117000, C700S159000, C700S173000, C700S193000, C318S568150, C318S572000, C318S573000

Reexamination Certificate

active

08041447

ABSTRACT:
A numerical controller controlling a 5-axis machine tool compensates setting error that arises when a workpiece is set on the table. Error in the three linear axes and the two rotation axes are compensated using preset error amounts to keep the calculated tool position and tool direction in a command coordinate system. If a trigonometric function used for error compensation has a plurality of solution sets, the solution set closest to the tool direction in the command coordinate system is selected from the plurality of solution sets and used as the positions of the two rotation axes compensated in the above error compensation.

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