EzCad3: How to Make 3D XYZ Correction?

STEP 1: Open CalibrationWizard.exe.

1.Open the program

2.Choose Correction System and Set System Parameter

3.Click "Confirm" Button

STEP 2: Set Mark parameters for laser and scanhead.

STEP 3: Calibrate motor Z axis (If no Motor Z axis, don’t set it )

STEP 4: 3*3 Scanner calibrate

For this step, please refer the 9 points correction manual.

After finishing the 9 points correction, if customer want a better precision, customer could do multi-point correction, for this step, please refer the multi-point correction manual.

After finishing the 9 points correction or multi-point correction, customer need to load the cor file again in this window.

STEP 5: Z axis calibration

1.Click "Z Axis Cor" button to open Z axis calibration page.

Test Focal: Theory(mm): 3D scanhead Z theory value.

Test Focal: Actual(mm): 3D scanhead Z actual value.

Mark Test Image(Grid): Mark 25 grid,if the grid is Symmetrical, it means the actual value is OK.(We suggest customer use this way to check the actual value )

Mark Test Image(Cross): mark cross, if the cross line is thinnest and the sound is crisp, it means the actual value is OK.

Mark TEST Image(Circle): Mark circle, if the line is thinnest and the sound is crisp, it means the actual value is OK.

Test Image Size(mm): set the size of grid cross and circle.

Focal Steps(mm): set focal steps size.

Mark Rectangle Size(mm): set the rectangle size.

2.Click "Set Mark Parameters" button, input the laser power "20%-30%", and click "Enter" Button on the Keyboard

3.Click "Enter/Exit" back to the First page.

4.Set the parameter for Property:

5.Test Z value.

Set "Test Focal: Theory(mm)" value = 0,

"Test Focal: Actual(mm)" value = 0,

6.Click "Mark Test Image(Grid)"button

Check the grid rectangles, if the grid rectangles are not symmetrical and clear, adjust

and mark again, until getting a symmetrical grid rectangles. The good result should look like below picture:

Noted:

There are 25 small grids, Group them like this: 1 and 25, 2-24, 3-23, 4-22, 5-21, 6-20, 7-19, 8-18……every two grids show have same marking result.

Down the Test Focal: Actual(mm) if marking result like this

Up the Test Focal: Actual(mm) if marking result like this,

Change "Test Focal: Actual(mm)" until get a good result.

7.Click "Mark Rectangle" button

Software will mark a rectangle, measure this rectangle’s size (average size of length and width).
Input to

8.Click "Add Calibration Data" button to add the Sn0 line’s Z calibration data.

9.Move Z axis for different Z calibration.

Sn0 is for Z=0,

Down the scanhead 10mm (or Up the Work table 10mm), the Z(theory)=10mm,
Up the scanhead 10mm (Or down the work table 10mm ), the Z(theory)=-10mm.
And then we adjust Actual for testing.

Set "Test Focal: Theory(mm)" value = 10, set"Test Focal: Actual(mm)" value = 20,(it is around this value, Need adjust it according to our marking result),

Repeat step 6, 7, 8 to make Sn1 line’s z data. Then make other line’s z data

Different lens, Layer numbers are different, for 174-254 lens, calibrate from -30 to 30 (Means Test Focal: Theory have 7 value,-30,-20,-10,0,10,20,30).For 114-164 lens,calibrate from -10 to 10(Means Test Focal: Theory have 3 value,-10,0,10)

Example for 174-254 lens.

After we finished this 7 layers,
Input the Sn0 X and Y value into the software
Input Z axis layer number into the software

Notice: every time we input value, we need to click Enter, this is very important!

10.After adding all the z calibration data, click “Generator 3D Cor File” button to build 3D calibration file.

Click “Save 3D Cor File” to save 3D calibration file .