创建组件识别数据的方法.pdf - 第162页

162/178 IM-SMT-VSNDI C-0002 -000 2.12.5. Center of Grav ity detection In this m ode, the compone nt contour is determ ined, a nd then recogn ition is perf ormed on the component b y using the ce nter of gravit y position…

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Set the Lead Group for one side out of four sides. (Ex. N direction)
- Lead Group N: 1
- Lead Number N1: 0
- Lead pitch N1: 0
- Lead width N1: The size of the determination range X (In W/E direction,
Determination range Y)
- Reflect LL N1: The size of the determination range Y(In W/E direction,
Determination range X)
- Find Pos X N1: Determination range offset X
- Find Pos Y N1: Determination range offset Y
(7) Special 11: 4 Corner Fitting
This is used for positioning the generally rectangular components by using the
straight lines close to the four corners.
- Lead Group N: 1 (Set 0 for other directions)
- Reflect LL N1: Set the distance from the end surface of the rectangular part to
the straight lines where its accuracy is ensured.
- Lead width N1: Set the length of the straight line where its accuracy is ensured.
- Find Pos X N1: Set Dimension X of the square part.
- Find Pos Y N1: Set Dimension Y of the square part.
Option 4: “Cut Inner /Outer Noise”, the priority to perform “Cut Inner /Outer Noise”
function and the object type are specified.
Please refer to ”2.12.3-3. Mark 2, Note*3” for details.
Figure 131
Bit position
Check-area Offset Enable: (0:Disable, 1: Enable)
NG Condition: (0: Dispersion, 1: Non Dispersion)
Dispersion: If the brightness dispersion
value is larger than
threshold, it is determined to be an error.
Non Dispersion: If the brightness dispersion value is smaller
than
threshold, it is determined to be an error.
Lead Width
Reflect LL
Find Pos Y
Body Size Y
Find Pos X
Body Size X
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2.12.5. Center of Gravity detection
In this mode, the component contour is determined, and then recognition is performed on the
component by using the center of gravity position and the tilt of the axis of the contour.
This method is used to recognize irregular shaped components. However, the tilt of the
square and circular components is not defined, as they have no axes.
<< Items to be set for Center of Gravity detection >>
Items to be set Set value Explanation
Alignment Group Special Sets the component category.
Alignment Type Gravity Sets the component type.
Comp. Threshold Sets the binarization level.
Comp. Tolerance Specifies the shape tolerance as a percentage.
Search Area (mm) Sets the range of the detection.
Body Size X (mm) Sets the size of the outer edge.
Body Size Y (mm) Sets the size of the outer edge.
Body Size Z (mm) Sets the size of the outer edge.
Cntr. Offset X (mm)
Sets the offset amount in the X direction from the
center position.
Cntr. Offset Y (mm)
Sets the offset amount in the Y direction from the
center position.
Cntr. Offset R (mm)
Sets the offset amount of the angle of rotation.
Table 107
[Recognition check items]
Items Yes / No Notes
Surface Area Yes Checks the surface area of the targeted item
Body Size No
Lead pitch No
Lead width No
Lead length No
Lead position No
Table 108
The following is the example of the recognition of Center of Gravity detection.
Items to be set Set value
Alignment Group Special
Alignment Type Gravity
Comp. Threshold 0
Comp. Tolerance 30
Search Area (mm) 6.0
Body Size X (mm) 9.0
Body Size Y (mm) 5.0
Body Size Z (mm) 22.0
Cntr. Offset X (mm)
0.0
Cntr. Offset Y (mm)
0.0
Cntr. Offset R (mm)
0.0
Table 109
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Figure 132
2.12.5-1. Special recognition of the Center of Gravity detection
(1) Special 1: Not supported (Check of the average brightness within the objects)
(2) Special 2: Not supported (Check of the average brightness within the objects)
(3) Special 3: Check Direction: The direction is determined based on the brightness of the
specified circular region. (*This needs to be custom-ordered.)
Option 1: Recognition flag
Option 2: Min. Brightness Difference (If the value is 0, 50 is set)
If the difference of the average brightness of the detected circle is smaller
than the value specified here, it is determined to be an error.
Option 3: Cut Inner Noise
Option4: Cut Outer Noise
The detection circle is set for the Lead Group 1 in the N direction in order to determine
the direction.
- Lead Group: 1
- Lead Number: 0
- Reflect LL: 0
- Lead width: Diameter of detection circle (mm)
- Lead pitch: 0
- Find Pos. X: Detection circle center position X
- Find Pos. Y: Detection circle center position Y
Bit position
Check Type:
(0:Black, 1 White)
0: (0°, 90°), 1: (0°, 90°, 180°, 270°)