IPD Technical ConferenceFebruary 19th 2008

Automotive Chain Inspection

Application

Provide verification that all chain links are present before guide installation.

After installation of guide, provide verification of guide presence and color.

Provide verification that rivet has been struck.

Various thickness chains need to be inspected on the same line

Various lengths of chain need to be inspected on the same line

Requirements

Link inspection

Distance from camera face to product cannot exceed 4”

Guide Presence/Color

Distance from camera face to product cannot exceed 6”

Colored guide appears every “x” number of inspections depending on chain produced

Rivet inspection

Distance from camera face to product cannot exceed 6”

Every “x” number of inspections there is an intentionally missed rivet for the hook up joint of the chain

Requirements

All inspections must utilize front lighting

All inspections can utilize the same trigger as the chain is being indexed

Vision system must be able to communicate the result of each inspection independently using digital I/O

Vision system must be able to provide an additional output to be used as a heartbeat to verify that an image has been acquired and that the image has been processed

Missing Link LightingArea Array vs. DOAL

Missing Link

Hardware TM2 camera

50mm DOAL

9mm lens

Software Count tool

Reject if we see any large areas of dark

Rivet InspectionGood rivet

Rivet InspectionMissed Rivet

Rivet Inspection

Hardware TM2 camera

25mm lens

70mm ring light

Software Four intensity tools

Reject if any tools average intensity is darker than it should be

Guide Presence/ColorColored Guide

Guide Presence/ColorNon-colored guide

Guide Presence/Color

Hardware TM2 camera

25mm lens

70mm ring light

Software Arc Tool to verify

guide presence

Intensity tool to determine if guide is colored or not

Communication

Heartbeat

Heartbeat

Heartbeat

Heartbeat

Automotive Chain Inspection

We quoted a VA40E-03-C53-0 with all necessary lighting & lenses.

The local Cognex/DVT distributor was also given an opportunity to quote against us.

The local Cognex/DVT distributor told the customer that they could not compete against us on a three camera system

We won the job!

It was determined that the customer also needed a single camera system located downstream of the VA40E that they purchased.

The customer purchased a VA15 to do the job without looking at anyone else.

Single Camera Inspection

After chain is assembled, the chain is placed under tension and driven with two sprockets.

The chain is inspected to be sure that all of the components have been assembled onto the chain.

Single Camera Inspection

Hardware TM2 camera

16mm lens

50mmx50mm backlight

Software Count tool

Reject if we do not have the right number of light areas in either one of the ROIs

IPD Technical ConferenceFebruary 19th 2008

Any Questions?