00196351-04_UM_ACT_de_en.pdf - 第79页
ACT - Accurac y Check T ool / User Manual 07/2014 Edit ion 5 1 Introdu ction 1.1 Safety information W AR N I NG Follow the safety in structions! The saf ety instruc tions in t he chapt er Operat ional S afety of the oper…
ACT - Accuracy Check Tool / User Manual 07/2014 Edition
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1 Introduction
1.1 Safety information
WARNING
Follow the safety instructions!
The safety instructions in the chapter Operational Safety of the operating manual and
service manual take priority.
1.2 ACT (Accuracy Check Tool)
The ACT is used to determine the placement accuracy of a specific placement head and, where
necessary, to correct this. To do this, special components are first placed on a glass mapping plate
and the plate is then measured. The offset determined (prescribed coordinates – placement
coordinates) is then taken into account during each subsequent placement operation, which
ensures that the placement head places components with the specified accuracy.
1.3 Technical data of the ACT
1.3.1 Properties
● Evidence of placement accuracy.
● Correction of X/Y and angular offset.
● Top-quality measurement without external measuring devices or additional machines.
● Measurement of placement accuracy without illumination table.
1.3.2 Technical Data
The measuring time per gantry for the ACT depends on the head type and the component used:
● Head with glass components approx. 60 seconds.
● Head with ceramic components (Cerampads) approx. 40 seconds.
ACT - Accuracy Check Tool / User Manual 07/2014 Edition
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1.3.3 Principle of ACT Measurement
Placement of glass components or ceramic components (Cerampads) on a glass plate with
reference fiducials (Figure 1-1). Glass or ceramic components are used, depending on the camera
type.
● Position measurement of the placed components on the glass plate.
● Automatic determination of offset in x, y and θ.
● Storage of corrections in the relevant machine data.
Figure 1-1: Principle: Measuring plate with glass and ceramic components
Key:
(1) View window of PCB camera (4) Glass measuring plate (300 x 200 mm)
(2) Ceramic component (Cerampad) (5) Reference fiducials on the measuring plate
(3) Glass component (6) Reference fiducials on the glass component