SIPLACE Vision Customer_en.pdf - 第93页

Component Shapes Shields Specific Component Shapes S tudent Guide SIPLACE Vision (Customer) Edition 12/2008 EN Component Shapes 93 5.3.1 1.2 Special Features fo r Shields  Shields are sheet metal with curved edges in a …

Component Shapes

Specific Component Shapes Shields

Student Guide SIPLACE Vision (Customer)

Component Shapes Edition 12/2008 EN

Corner description

Joint datasets with ICOS data NOT possible due to new recognition methods

There are inner and outer corners:

 The 1st programming type SV defines each starting and

end point with X/Y coordinates.

Due to the possible radiuses or recesses in the corners, the

recognition lines are not placed right into the corners of the

Shield!

This coordinate data is also stored in SIPLACE Pro.

 The 2nd programming mode radius can also be taught

online. In this case, the corner coordinates; the opening

angle of the 1st recognition line to the X body axis; the

distance of the recognition vector to the corner (radius 1/2)

and its length are programmed. The radius dataset is then

converted.

The coordinate or radius dataset is most effectively

calculated by using the mouse to mark the corners. Ensure

an accurate fit, as the coordinate values will later determine

the placement accuracy! The body dimensions must be

correct and match those in the teaching template.

 The illumination/evaluation ensures that these corners can

be recognized.

 Corner programming in SIPLACE Pro can be performed

with eight X/Y coordinates for the respective corner

recognition starting and end points.

 The procedure for 90° corners is somewhat simpler in

SIPLACE Pro: In tis case, the center point -> corner

coordinates are programmed and the eight corner

characteristic coordinates are then programmed based on

this corner (four of these coordinates are always 0).

 In the case of corners which do not have 90°, the simplest

method at the moment is to program in SIPLACE Vision, at

the station and using point, line or radius programming in

teach mode.

Punkt 1.1

nicht prog. (90°)

Punkt 1.2

Punkt 2.1 Punkt 2.2

Öffnungswinkel

90°

Eckenw.=0°

Radius1 Länge1

Eckpunkt X/Y

ussenecken

-90° Eckenwin.=0°

+X 180° 90°

Component Shapes

Shields Specific Component Shapes

Student Guide SIPLACE Vision (Customer)

Edition 12/2008 EN Component Shapes

5.3.11.2 Special Features for Shields

 Shields are sheet metal with curved edges in a wide range of body shapes, some with openings/

holes drilled through; inner and outer corners and various opening angles.

 The evaluation times increase with the programmed angle tolerances.

 Various corner filters: four corner filter types are possible, depending on the different shield edges

used.

 Filter type 248 e.g. for edge springs;

 Default setting: Several position candidates

are permitted for each edge, although each

candidate must be above the gradient

threshold. Each edge is also subjected to an

additional scan. This singles out poor quality

edges, primarily candidates caused by

springs.

 Filter type 249, for good edge quality;

 Outer edge: Always takes the outermost

position (as seen when looking from outside

the component) above the gradient threshold

(in the case of double edges, caused by

indentations in the Shield and steep

illumination). The system only considers

edges which are within the yellow search

frame.

Component Shapes

Specific Component Shapes Shields

Student Guide SIPLACE Vision (Customer)

Component Shapes Edition 12/2008 EN

 Filter type 250, for poor edge quality;

 As in the case of the default setting, several

candidates are possible. However, in this

case, an additional scan is not performed

(suitable for Shields with poor edge quality.

The edge in the diagram shown has both bright

and dark points).

 Filter type 251, for double edges caused by

springs or recesses;

 Binary diagram: automatically determines a

suitable gray value threshold for binarization of

the image. A binarized image only has two

gray values: 0 and 255. Edge recognition in the

binary image is performed with an additional

scan (for Shields with springs and double

edges caused by shield indentations and

steep illumination. The bottom part of the

shield in the diagram has protruding elements,

which the measuring result is not supposed to

determine, and a double edge). If this filter type

is needed for a corner, we advise you to set it

for all corners. This means that the position is

determined in the same manner for all corners,

increasing measurement accuracy.