in-circuit test using jot automation · 2013-05-29 · gm components holdings, llc 2 kokomo...
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1 GM Components Holdings, LLC Kokomo Operations
In-Circuit Test using JOT Automation
2 GM Components Holdings, LLC Kokomo Operations
The Automation Journey Begins…
Journey of automation began with HP Express Fixturing System (EFS) board handlers
Very well thought out fixture and handler design (Compact, Elegant, “handler” commands, Easy to use…).
“Hover Craft” handler removal for card change
EFS conveys using a single drive belt
And then came a product requiring a Pallet (Wide, Heavy)
In came JOT…
3 GM Components Holdings, LLC Kokomo Operations
JOT and the 3070 Automated Production Line
4 GM Components Holdings, LLC Kokomo Operations
JOT
Dual belt drive to convey board/array/pallet
Tester is “Strapped” to the JOT Handler
PLC Controlled system
Communicates Serially to the 3070
Rob Koza (Formally HP) integrated the 3070 and the JOT (in UNIX)
John Lutkus helped convert the first testplan, seamlessly, to PC.
Programmable press heights - Dual Stage testing (Raise so resonator starts)
Fixture Identification (Autofile) used for a one time set-up of programmable Press heights.
5 GM Components Holdings, LLC Kokomo Operations
JOT in Automated Production Line
6 GM Components Holdings, LLC Kokomo Operations
JOT in Automated Production Lines
7 GM Components Holdings, LLC Kokomo Operations
JOT
Tester is “Strapped” to the JOT Handler
PLC Controlled system
Communicates Serially to the 3070
Rob Koza (Formally HP) integrated the 3070 and the JOT (in UNIX)
John Lutkus helped convert the first testplan, seamlessly, to PC.
Programmable press heights - Dual Stage testing (Raise so resonator starts)
Fixture Identification (Autofile) used for a one time set-up of programmable Press heights.
8 GM Components Holdings, LLC Kokomo Operations
Fixturing for JOT Handler
Top “Cage” and Bottom (Standard Fixture) of The Tooling
9 GM Components Holdings, LLC Kokomo Operations
How a board is tested using the JOT
Fixture installed in the JOT
The “Test” conveyor rail section.
10 GM Components Holdings, LLC Kokomo Operations
Jot Press in the “Move” position
Circuit board in the test position of the JOT rails
Pneumatically controlled Stopper Foot
11 GM Components Holdings, LLC Kokomo Operations
JOT in the “Move” position continued…
The Stopper-Foot has been raised.
Product-to-probe alignment - Uses Variable (spring loaded) tooling pins
12 GM Components Holdings, LLC Kokomo Operations
How a board is tested using the JOT
The press has pushed the board onto the bed-of-nails.
13 GM Components Holdings, LLC Kokomo Operations
The TestJet and Zero-Flex plate
Upside down view of the JOT Top fixture
14 GM Components Holdings, LLC Kokomo Operations
Barcode reading
AIDEA interface box configures a scanner to read
barcode labels
15 GM Components Holdings, LLC Kokomo Operations
Barcode reading
AIDEA interface box configures a scanner to read
barcode labels
16 GM Components Holdings, LLC Kokomo Operations
Barcode Reading
Box that interrupts the SMEMA for operator intervention for a no barcode read
17 GM Components Holdings, LLC Kokomo Operations
JOT and 3070 Points to Ponder…
Press Height controlled to a fraction of a mm.
Throughput impact of using automation (In-line V.S. Cell)
One operator runs all lines
No operator handling of products
Change a card time is 30 minutes
High test repeatability (parallel board contact with probes)
Low Fixture maintenance (No gaskets, hinges, …)
Has reduced rework due to timely process defect detection
Minimal buffer between Surface Mount has saved Scrap on more than one occasion.
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18 GM Components Holdings, LLC Kokomo Operations
Questions?
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