ISO 22827-2:2005(E) 5.1.2 Inspectionofpositioning accuracy accordance with Table 1,according tothe classificationofthe moving mechanism. Testing shall be carried out at the maximum travelling speed specified in the manufacturer's specification for welding operations.The measured value of accuracy shallbe within the range shown in Table 1.At least three measurements shall betakenand averaged. When the table length is in 1 m or longer, the positioning accuracy shali be measured at every 1 m in span of the movement. Inspection shall be carried out for the X-and Y-coordinates. Table1-Rangeof repeatabilityandpositioningaccuracy Acceptancecriteriaforclass Item A B c D Positioning repeatability unidirectional ±0,01 mm ±0,01mm ± 0,02 mm ± 0,2 mm bidirectional ±0,02 mm ± 0,04 mm ± 0,06 mm ± 0,4 mm Positioning accuracy ± 0,05 mm/m ±0,1 mm/m ± 0,2 mm/m ± 0,4 mm/m The positioning accuracy shall be measured only after verifying that the travelling speed range is within the requirement shown in Table 2. However, a simplified test method can be used if specified in the specification. The inspection shall include that of the working axis or rotating fixtures of the moving table under no load condition. Positioning accuracy of the optical axis of the moving beam shall be tested if the moving beam is used. The travelling speed accuracy shallbe tested at maximum and minimum travelling speeds,as specified in the manufacturer's specification may include a preferred travelling speed for welding operations. The measured value of the preferred travelling speed shall be within the range specified in Table 2. Table2-Rangeoftravellingspeedaccuracy Acceptancecriteriaforclass Item A B c D ± 2 % ± 2 % ± 4 % ± 10 % Maximum travel speed Minimum travel speed ± 5 % ± 5 % ± 10 % ± 10 % Preferred speed accuracy ± 1% ± 1% ± 2 % ± 5% maximum table size, and the time for passing the distancebetween the passing points shall be measured. 5.1.3 Inspectionoftrajectoryaccuracy stobemeasuredinaccordancewithIso15616-2:2003,Clause5,ormeasuredas ion inaccordancewithISO/TS 17477:2003, 5.2. I values are given in Table 3. This documentis now 3 Not for Resale ISO22827-2:2005(E) Table 3--- Grouping of trajectory accuracy Acceptancecriteriaforclass Type of trajectory A B c D Rectangle:Maximumvalue measuredat fourpoints Omitted error a (mm) and 0,1 0,2 0,5 1,0 Overshooterror Jo (mm) Circle: Roundness error t (mm) 0,05 0,1 0,25 0,5 45° bevel: Reversal error r (mm) 0,05 0,1 0,25 0,5 5.1.4 Test procedure For the speed measurement of the moving table and rotating parts, use a measuring equipment (digital In order to exclude the influences of welding, measurements shall be taken directly against the work piece or the positioning equipment or the moving-type condensing (focusing) optics. A hard rubber friction wheel, etc. can be used to transmit linear or rotating movement to a movement- measuring instrument. 5.2 Type2test 5.2.1 Parameterstobetested The type 2 test shall include verification of the following parameters: a) trajectoryaccuracy; b) straightness of the motion in X-axis direction; straightness of the motion in Y-axis direction; c) d) squareness between X-and Y-axes; (e positioning accuracy of the motion in X-axis direction; f) positioning accuracy of the motion in Y-axis direction; (6 moving speedaccuracy 5.2.2 Test devices Thetesting shall be carried out withmeasuring instruments, such as standard scale, tape measure, dial gauge and/or steel wire. The instruments shall be sufficiently accurate and calibrated, validated or verified as appropriate. ISO 2005 - All rights reserved Not fer Resale ISO22827-2:2005(E) 5.2.3 Testprocedures 5.2.3.1 Trajectory accuracy 5.2.3.1.1 Pattern The pattern shown in Figure 1 shall be marked out by either drawing on a piece of paper or a test piece by fitting a vertically movable ball-point pen on the tip of the optical head, or permanent marking on astainiess-steelsheetbythelaserbeam. intersections, meandering of trajectories, and deviations