OnRobot VGC10 User Manual page 143

Hardware Specification
Specification or Feature
Parts Presence Sensing
Pad Material
Wear Properties
Pad Attachment Mechanism
Change-out interval
Cleaning system
Cleaning interval and % recovery
Effectiveness on Different Materials
The Gecko Gripper is best suited for smooth, low surface roughness substrates that are generally flat, stiff,
and rigid. For other materials, the Gecko Gripper's effectiveness drops depending the stiffness and
roughness of the picking surface. The table below shows a relationship between rigid and flexible
substrates, surface finish, payload and the required preload to pick up said substrate . For example, if the
customer knows that their part/substrate is rigid, with a mirror-like finish and weighs 2kg, the preload
required to pick up the part/substrate is a medium-level preload.
Flexibility
Rigid
Flexible
To further elaborate the significance between preload and payload, the table below shows visual matrix
that displays the capability of the gecko gripper to pick up different materials with varying stiffness and
roughness, at three different preload values (low 40N, medium 90N, high 140N).
Surface finish
Mirror-like finish
Smooth
Matte
Mirror-like finish
Smooth
Matte
Target value
Yes (Ultrasonic)
Proprietary silicone blend
Depends on surface roughness and preload
Magnetic
150000 – 200000 for HIGH PRELOAD
200000 – 250000 for LOW PRELOAD
Cleaning station
See Cleaning Station Manual
Payload (kg)
0 to 2
2 to 4
4 to 6
0 to 2
2 to 4
4 to 6
0 to 2
2 to 4
4 to 6
0 to 2
2 to 4
4 to 6
0 to 2
2 to 4
4 to 6
0 to 2
2 to 4
4 to 6
Required Preload
Low
Medium
High
Medium
High
N/A
High
N/A
N/A
Medium
High
N/A
High
N/A
N/A
N/A
N/A
N/A
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