Robert Squier Using PolyWorks® to Calculate Shim Moves... · Why ‘Our Way’ is better! Using...
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Using PolyWorks® to Calculate Shim Moves Bob Squier – 3D Scan IT, Inc. 3D SCAN IT
Transcript of Robert Squier Using PolyWorks® to Calculate Shim Moves... · Why ‘Our Way’ is better! Using...
Using PolyWorks® to Calculate Shim Moves
Bob Squier – 3D Scan IT, Inc.
3D SCAN IT
Opportunity for Improvement Certify 250 Assembly Trays based on 4 designs in 45 days
3D SCAN IT
Old Shimming Process
Measure Detail / Feature
Determine Deviation
Change Shim
Remeasure Detail / Feature
If ‘In Tolerance’
Move to next Detail / Feature
Else
Repeat
Endif
Write Down Shim Pack Total
Create an Excel Shim Report
3D SCAN IT
Our Way!!!!
Off Site
Get Tool CAD Model From Customer
Extract All Shim Features From Model, including detail names
Using Macro, Create Shim Log Report
On Site
Measure All Features
Print & Place Shim Stickers
Move On…
Have Mechanic Adjust Shims as Required
Remeasure All Features
Shim Log is updated automatically
3D SCAN IT
Why ‘Our Way’ is better! Using the CAD model saves time!
‘Assembly Models’ contain the Part Detail Names
Measuring everything at once improves accuracy
FACT: Disassembling and Reassembling details ‘Moves Stuff!’
‘Mechanics’ are Cheaper than ‘Metrology Engineers’
A union Mechanic’s charge rate is usually half the cost of a Metrology Engineer’s
Stickers reduce Communication Errors
Let the computer calculate the new shim pack
Eliminates ‘moving the wrong way’
Shimming can be performed ‘off line’
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Using the CAD model saves time!
‘Pick On CAD for All Features
‘Assembly Models’ contain the part Detail Names
Create Macros to speed it up!
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Let the Computer Do the MathDetermine the Shimming Vector
If Adding Shim moves the Detail in the Positive Control Direction the Shim is considered a “+” i.e. Y & Z
If Adding Shim moves the Detail in the Negative Control Direction the Shim is considered a “-” i.e. X
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Stickers Reduce Communication Errors Convey Everything the Mechanic
needs to know on something they can touch and feel.
Detail Name
Old Shim Value
Current Deviation
New Shim Value
Direction of Move
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Comparison of Time Requirementsand Cost Savings
Old WayPersonnel Rate Time Cost
Metrology 1.0 1.0 $100
Mechanic 0.5 1.0 $50
TOTAL 2.0 $150
Our WayPersonnel Rate Time Cost
Metrology 1.0 0.25+0.25 $50
Mechanic 0.5 1.0 $50
TOTAL 1.5 $100
RESULTS: Opportunity for Improvement Certify 250 Assembly Trays based on 4 designs in 45 days
3D SCAN IT
Completed 1 WEEK early
