Electricity: motive power systems – Positional servo systems – Program- or pattern-controlled systems
Reexamination Certificate
2011-06-28
2011-06-28
Ip, Paul (Department: 2837)
Electricity: motive power systems
Positional servo systems
Program- or pattern-controlled systems
C318S571000, C318S568120, C451S005000, C451S008000, C700S186000, C700S193000
Reexamination Certificate
active
07969111
ABSTRACT:
A numerical controller capable of moving a tool end point position to an accurate position in a five-axis machining apparatus. Compensation amounts are set, which correspond to respective ones of a linear axis-dependent translational error, a rotary axis-dependent translational error, a linear axis-dependent rotational error, and a rotary axis-dependent rotational error, which are produced in the five-axis machining apparatus. A translational/rotational compensation amount Δ3D is determined from these compensation amounts and added to a command linear axis position Pm. As the compensation amounts, there is used a corresponding one of six-dimensional lattice point compensation vectors, which are determined in advance as errors due to the use of a mechanical system and measured at lattice points of lattices into which the entire machine movable region is divided.
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Japanese Notice of Reasons for Rejection mailed Mar. 17, 2009 issued in Japanese Application No. 2008-273091.
Otsuki Toshiaki
Yamaguchi Takehiro
Drinker Biddle & Reath LLP
Fanuc Ltd
Ip Paul
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