00191297-02 - 第288页
6 Vision functions User Manual S-23 HM 6.7 Guidelines for Describing Package Forms Software Version SR.405.xx 05/99 Issue 286 6.7 Guidelines fo r Describing Package Forms 6.7.1 T ransfer of Pack age Form Dat a and the P …
User Manual S-23 HM 6 Vision functions
Software Version SR.405.xx 05/99 Issue 6.6 Test Component
285
Measurement 6
You can choose between the following measuring methods: 6
– the profile method for fast analysis or
– the filter method for a more robust measuring method, although this will take longer.
The ’fast’ measuring method is generally sufficient. However, for critical components we recom-
mend the ’robust’ measuring method if the quality is insufficient, for example if the quality factor is
less than 50. 6
Analysis 6
This is used to analyze the position of the balls and to determine whether they are present. It can
also be used to determine the quality of the measurement. The quality of the measurement should
generally be better than 50. 6
If you are placing BGAs, µBGAs or flip-chips with high reproducibility, i.e. if there is very little dif-
ference between the optical parameters of the components, we recommend the following settings
to guarantee fast placement: 6
– Switch off the determination of position / presence for components with large balls and spacing.
The position of the components has already been adequately determined using the grid mea-
surement of 3 balls per corner, and the ball presence analysis is unnecessary.
– Do not activate determination of the quality of the measurement unless you want to detect han-
dling or production errors.
Determination of the position is always necessary if the individual ball positions differ greatly from
the grid structure, i.e. if the individual ball positions are fairly scattered about the desired position.6
6 Vision functions User Manual S-23 HM
6.7 Guidelines for Describing Package Forms Software Version SR.405.xx 05/99 Issue
286
6.7 Guidelines for Describing Package Forms
6.7.1 Transfer of Package Form Data and the Package Form Interpreter
If a package form is transferred to the station without an .SST file, the package form interpreter
will make certain settings to enable the package form to be measured in accordance with the pack-
age form description. 6
6
Fig. 6.7 - 1 Transfer of package form data without package form manipulation
In SIPLACE automatic placement machines, the package form interpreter is located in the ma-
chine controller. The communication module transfers the signals for controlling the lighting from
the MC to the cameras. 6
Tasks of the Package Form Interpreter 6
– Automatic selection of suitable measuring modes
– Automatic selection of the measuring parameters
– Differentiation between cubic/not cubic
– Automatic setting of the lighting
LC
Package form library
Describe package for & components
Assign nozzles
Select cameras
.OGF
Package form interpreter
SC
MVS
Automatic selection of meas. modes
Automatic lighting selection
Hard disk
GF manipulator
User Manual S-23 HM 6 Vision functions
Software Version SR.405.xx 05/99 Issue 6.7 Guidelines for Describing Package Forms
287
The package form interpreter processes standard components and automatically identifies spe-
cial components. Under certain circumstances, other components have to be post-processed. If
the package form settings have to be manipulated, these changes will be stored in the .SST file
and transferred back to the line computer. 6
6
Fig. 6.7 - 2 Transfer of package form data with package form manipulation
If a package form is transferred to the station with the .SST file, then the settings for the .SST file
for measuring the package form will also be transferred. The package form interpreter will remain
inactive. 6
LC
Package form library
Describe package form & components
Assign nozzles
Select cameras
.OGF
Package form interpreter
SC
MVS
Automatic selection of meas. modes
Automatic lighting selection
Hard disk
GF manipulator
.SST
Important note:
Manipulation of components at the station must be the exception and not the rule
In general, only a few components have to be changed.