6.3 How to analyze the “VgChart”Ple

6.3 How to analyze the “VgChart”Please refer to the following for the typical chart of the adjustment result and how to take measures.A. If the XY offset shift is found in the data of mounting result• What is “XY offset shift”?When the deviation is found in the positions where all the components are mounted, in the same direction and in all the angles as can be seen in Figure 55.If the analysis result by the Vg Chart indicates that there is “XY offset shift”, perform feedback for the compensation value of the measured result. 1. Check and save the corrected value Figure 55 1) Select the “Accuracy Value” tab.Click on the “Accuracy value” tab to display the screen shown in Figure 56. 2) Check the values to be corrected. Figure 56 Check if there is no problem with the values to be corrected, then click on the [SaveMch.Data] button.2. After saving the corrected value in the machine data, perform ACP accuracy check again.)r If the measured result meets the specified value:- Bring back the machine data and the data of the mounting result.- If the machine is equipped with the multi camera →Move on to “0.7. Accuracy adjustment of the multi camera (Option).”If the machine is not equipped with the multi camera →Move on to “8. Items to be adjusted relating to the mounting accuracy of the machine”. )r If the measured result does not meet the specified value:The “XY offset shift” is supposed to be corrected by performing feedback.If the result does not meet the specified value, please investigate the cause of the problem and perform the relevant basic adjustment again.Please refer to “C. When the variation and the abrupt shift are found in the mounting result.”B. If the mounting result data spreads in the X and Y directionsThe mounting result data spreads in the X and Y directions in different way depends on the mounting angle as shown in Figure 57.The value of “Index 2” varies depends on the pattern of the mounting result data.This symptom indicates that some adjustment data may have changed from the factory setting. Instead of performing feedback (saving the machine data) of the ACP correction value, please perform readjustment of the following items (check the variation of the data), and then perform ACP accuracy check again.Note:Even when the value of “Index 2” is 1.000 or above, the mounting result data may spread in the X and Y directions. In this case, please perform feedback of the correction data instead of readjusting the basic data. 1. Items to be adjusted of the basic data Figure 57 Please perform adjustment for the following items:)r Scale adjustment of the fiducial camera)r Scale adjustment of the scan camera)r Positioning of the scan camera)r Adjustment of the Head Offset XY• If the machine is equipped with the multi camera:When performing the adjustment of the head offset of the scan camera, the basic data adjustment of the multi camera needs to be performed. Please perform “Camera scale adjustment” and “Positioning” of the multi camera after completing the above adjustments.