High-Resolution 3D Scanning for Inspection of Cutting Tool ...

High-Resolution 3D Scanning for Inspection of Cutting Tool Edges

CM Taylor, I Cook, G Sawal, N Xia 17th March 2015

Confidential. ? 2015 AMRC with Boeing. Template - AMRC.PTGPPT Revision 1 (February 2015)

Background

High-Resolution 3D Scanning

? Inspection of tools ? Process condition ? Inspection of parts ? Measure form and roughness

(For production, or in this case two R and D applications)

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AMRC owns Alicona G4 and SL devices Focus variation technology

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Research Questions

Coated Rhombic Carbide Turning Inserts Top and bottom edges measured. i. Is the edge rounding consistent,

between straight edges (E in the schematic as right) and corners (c in the schematic)? ii. Is there a measurable difference between ground and pressed inserts?

(All tools scanned in unused condition)

Nomenclature for each feature measured. Tools marked with IDs, datums. 50 green profiles fitted for each area of the edge measured Used Alicona SL, with "EdgeMaster"

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a circle is fitted to each profile, the

cutting edge radius is reported for each profile

along with the overall mean

value

specified number of profiles (shown in green) are automatically fitted, to scans of straight sections or corners

Edge Measurement Software- screen grab

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Results for Turning Inserts

Kernel frequency plots created from edge radius data for two batches of inserts. Ground inserts were shown to be sharper than pressed inserts Both cases, corners blunter than straight edges. Hypothesis: more exposed to edge prep process

Ground carbide turning inserts

edge, microns

corner,

Pressed carbide turning inserts

edge,

26.2 microns

29.5 corner,

frequency of occurrence frequency of occurrence

edge rounding (microns)

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edge rounding (microns)

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