1.1 adjust the fixing fixture of PCB
Operate in the analysis program of Yier AOI testing equipment, make the X / y platform return to the loading position, loosen the fixed nut on the fixed PCB buckle on the fixture by hand, and adjust the PCB buckle, so that the PCB board can be placed in the position and fixed without shaking (note that the buckle shall not overwhelm or block the components, and the height of the components shall not exceed 30mm).
When the AOI test is stable, the main reason may be that the PCB board is not fixed properly. The mark position and component frame can be observed by Mark correction, so as to eliminate the fault.
1.2 switching of operation level the application program of smt-aoi testing equipment is divided into three application modes: "system adjustment" mode, "preparation and debugging" mode and "normal detection" mode.
1.2.1 interrelationship between models
Normal detection: only detection operation can be carried out and the existing program can be called out. No modification can be made to the program for the operator to use. Programming and debugging: including all functions of operation mode, can create and debug programs, and modify and adjust existing programs. For engineer or technician programming.
System adjustment: it has the functions of all editing modes, and can set the system of e2eqc application program, including lens calibration, software limit definition, camera height adjustment and light source brightness adjustment. For the administrator of e2eqc users.
1.2.2 switching between modes in AOI detection program
The system is in the operation status by default. Click the menu [system] → [operation level], select the mode to be entered, enter the password (the initial password is 29888666), and enter the selected mode after confirmation. At the same time, the status bar at the bottom of the window displays the current operation mode, as shown in the figure:
For data security, users can modify the password. The operation method is as follows: run the system (menu) → operation level → system adjustment mode (input password) → reset password → input old password → input new password → confirm new password → confirm → password is set successfully.
1.4 x / y platform movement
In the main operation window, there are eight direction moving buttons, which indicate the corresponding direction of the X / y platform. The moving forms are divided into fast and slow. The double arrow is for fast moving, which is used for large range adjustment, and the single arrow is for slow moving, which can be adjusted accurately. At the same time, the function of "move to current position" is also available. If the icon in the toolbar is selected, it means that "move to current position" is selected. That is to say, when the mouse clicks on a certain position on the interface of the main window, the center of the camera corresponds to the position (it is generally convenient to determine the starting point of calculation and calculate the PCB size)
Note: when moving the PCB board, when the CCD camera is close to the upper, lower, left and right limit positions, the moving speed must be slowed down to avoid hitting the upper limit switch. If you hear the "click" sound, it is recommended to restart the software to avoid equipment failure.
1.5 create a new program
Click the menu [file] → click [new] → menu [add PCB] (the board dialog box will pop up) to define the PCB calculation starting point (i.e. coordinate origin). The coordinate origin is the reference point of the part coordinates. Generally, the lower left corner of PCB is set as the coordinate origin. The machine is referring to the position of the coordinate origin to find the component position, and the coordinate of the coordinate origin is relative to the machine origin.
Setting of calculation starting point: click the direction icon, move the PCB to the shooting range of the camera lens, move the cross to the lower left corner of the PCB, and align the center of the cross with the lower left corner of the PCB (Note: observe whether there are any components around the cross, in principle, all components should be included in the upper right area of the cross coordinate), and click "current position", and the computer will automatically calculate Calculate the relative coordinate value of the current cross position (the origin generally has a default value set in the factory, just return to the origin to confirm the position)
Using the same method, move the cross to the upper right corner of PCB, and align the center of cross with the upper right corner of PCB. Click "current size" in the "PCB size" column. The computer will calculate the PCB size according to the coordinate difference between the preset calculation starting point and the upper right corner of PCB, that is, the range we need to detect. Enter the name of the board and click OK. You will be prompted "do you want to make a shortened board drawing now" to proceed to the next step.
The origin of AOI testing equipment has been set before delivery, but the origin of each machine is different. When the program programmed on one machine is copied to another machine, it is only necessary to reset the coordinate origin.
(Editor in charge：admin)
