VisionHub
3D Guidance System
Overview (Cont.) |
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3D Guidance System Overview
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3. What It Does
The VisionHub enables dynamic location of in
process production parts during assembly operations, eliminating the need for hard tooling
to fixture the part. This is particularly important in today’s manufacturing
environment that requires both high model mix and rapid new product introduction. In
fixtured operations, each part carrier requires a locating fixture for each model in
production. This is expensive, limits model mix and slows new product introductions. The
VisionHub eliminates the need for these fixtures, locating the part and providing the
required offsets to the assembly robot. The resulting assembly operation is lower cost and
more flexibility.
VisionHub is designed to provide robot
guidance in a broad variety of standard applications. Some example applications include:
- All applications requiring non-contact fixturing.
- Windshield loading
- Sealant application
- Flash trimming
- Loading/unloading
Depending on the application, the VisionHub configuration used might require fixed,
stationary cameras, robot-mounted cameras, and/or feature alignment techniques.
An automotive sealant cell application is a good example of an application where fixed,
stationary cameras might be used. In this application, anywhere from 4 to 8 (depending on
the level of redundancy) might be permanently mounted in factory hardened enclosures to
view a set of gauge holes on the underside of the vehicle. When the vehicle body enters
the cell and comes to a rest, VisionHub can calculate a frame shift for the entire vehicle
within a few seconds, allowing the vast majority of the cycle time to be used for the
application of sealant by the robots.
A robotic flash trimming operation of fiberglass or injection molded parts is an
example of where a robot mounted sensor might be used. In this application the overall
variation in part size and shape may render an overall part frame offset ineffective by
itself. By mounting the VisionHub sensors directly on the robot end-effector, not only can
a global part offset be calculated, but localized variations in the parts shape and size
can be compensated for using VisionHub’s feature alignment capabilities.
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