00191297-02 - 第171页
User Manual S-23 HM 6 Vision functions Software Version S R.405.xx 05/99 Issue 6.1 The vision systems on the placement system 169 The PCB ca mera sy stem (see items 1 and 2 in Fig. 6.1 - 3) es sential ly consis ts of the…
6 Vision functions User Manual S-23 HM
6.1 The vision systems on the placement system Software Version SR.405.xx 05/99 Issue
168
6.1.2 PCB camera systems
Fig. 6.1 - 3 PCB camera system, basic gantry - bottom view
Key to Fig. 6.1 - 3
(1) PCB camera - lens and illumination
(2) Camera amplifier
(3) Head mount
(4) Gantry
6
4
3
2
1
User Manual S-23 HM 6 Vision functions
Software Version SR.405.xx 05/99 Issue 6.1 The vision systems on the placement system
169
The PCB camera system (see items 1 and 2 in Fig. 6.1 - 3) essentially consists of the following
components: 6
– Lens system
– CCD chip
– CCD camera amplifier
– An illumination plane for illuminating PCB fiducials and ink spots
The PCB camera system is fixed to the revolver head mount on the underside of the gantry. As
standard, it can center PCBs from 50 mm x 50 mm up to 460 mm x 460 mm (2" x 2" to 18" x 18")
in size, with the thickness ranging from 0.5 mm to 4.5 mm. 6
6.1.3 Vision analysis unit
The vision analysis unit (see item 1 in Fig. 6.1 - 4) is plugged into the placement system’s control
unit. 6
It processes and analyzes electrical signals from the component and PCB camera systems. Cor-
rection values are calculated from any deviations from setpoint. These values are then used for
recalculating the placement positions and angle of rotation for placement. 6
The vision analysis unit also performs a component identification process. The precise component
pick-up position, which is particularly important for small components, is also determined in the
vision analysis unit. 6
6 Vision functions User Manual S-23 HM
6.1 The vision systems on the placement system Software Version SR.405.xx 05/99 Issue
170
6
Fig. 6.1 - 4 Vision analysis unit