Tool Coatings and Modifications
Rock River has been in business since 1986.
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Optional Modifications
Solve Problems Economically —
- 30% of standard tools ordered include one or more simple modifications.
- Standard tool optional modifications eliminate need for costly special tools.
- Optional modifications are available with very short lead times.
- Improve standard cutting geometries for difficult machining materials-abrasive or extra tough.
- Incorporates cutting form to eliminate need for additional machining.
- Improve tool holding or driving.
Drill Optional Modifications
- Intermediate cutting diameters to eliminate reaming operation.
- Special point types and point angles:
– 135º split point for drilling abrasive and tough materials
– 90º point for drilling soft materials.
– Double point angles to reduce drill breakout bur and reduce corner wear. - Coating to increase cutting speeds and feeds and reduce wear.
- Flat or tang on shank for positive drive.
- Short shanks to reduce run out due to set-up
- Extra long shanks to solve reach problems.
- Reduced shank diameter or undersized Morse taper to accommodate tool holding limitations.
Reamer Optional Modifications
- Intermediate cutting diameters-priced on each reamer type data page.
- Closer tolerances-instead of plus .0003
For plus .0002 – add $1.00 per tool.
For plus .0001 – add $3.00 per tool - Sharpen finish 30 micro inch or better.
- End chamfer other than 45º.
– Less than 45º tend to straighten hole
31º to match 118º drill point at bottom of drilled hole.
22-1/2º to match 135º drill point at bottom of drilled hole.
– Greater than 45º tend to thin out chips that resist breaking.
– Greater than 45º will produce better finishes and will follow drilled hole.
– End Cutting – 180º chamfer (flat end-no chamfer) - Corner radius – for better finish.
– for stronger corner in abrasive and tough materials.
- Special O.D. relief depending on material being reamed.
- Reduce circular margins for some steels.
- Increase circular margins for some non-ferrous.
- Grind steel head below carbide-usually .008-.020 to improve finish-normally much better to use full length carbide design.
- “Rose” Grind – Twice the normal back taper and full circle on the margin (not relieved). To improve finish but this reduces tool life.
- Cutting diameter partially reduced for non-cutting pilot.
- Cutting diameter partially reduced for cutting step.
- Coatings to increase cutting speeds and reduce wear.
- Shortened shank reduces runout due to set-up.
- Reduced shank diameter or undersize morse taper shank to accommodate tool holder limitations.
- Flat or tang on shank for positive drive.
Counterbore Optional Modifications
- Intermediate cutting diameter – priced on each counterbore type data page.
- Closer tolerance than .001 on cutting diameter.
- End chamfer other than 180º when used as a piloted countersink or hole bottom form operation.
- Corner radius for improved finish.
- Cutting diameter ground down for small cutting step.
- Drive flat or tang on shank for positive drive.
- Shortened shank reduces runout due to set-up.
- Reduce shank diameter or undersize morse taper shank to accommodate tool holder limitations.
End Mill Optional Modifications
- Intermediate decimal cutting diameter.
- Closer tolerance.
- Radius corners to improve finish.
- Coating to increase cutting speeds and reduce wear.
- Undersize shank to accommodate tool holding limitations.
Keyseat Cutter Optional Modifications
- Intermediate width or diameters.
- Radius corners to improve finish.
- Reduce neck diameter.
- Drive flats on shanks for positive drive.
Slitting Saw & Side Milling Cutter Optional Modifications
- Closer tolerance for cutting face width and cutting diameter.
- Alternate chamfer every other tooth.
- Full radius.
- Chamfer both sides.
- Radius both sides.
- Coatings to increase cutting speeds and reduce wear
- Matched sets.
Rock River Tool Recommended Coatings
Cost Justified
- Tool life dramatically extended.
- Part finish significantly improved.
- Reduced tool wear stabilizes tolerances.
- Faster cutting speeds and feeds.
- Utilize the physical deposition (PVD) process so the hardened tool steel body is not softened and retains its toughness.
TiN-Titanium Nitride
- Most popular for steels and cast irons.
- Hard – (86 Rc.)
- Thermally stable to 1000º F.
- Very good lubricity-0.4 coefficient.
TiCN-Titanium Carbonitride
- Excellent for steel
- Gaining market share.
- Harder – (94 Rc) than TIN or TiAlN.
- Only thermally stable to 750º F.
- Better lubricity- 0.25 coefficient.
TiAlN-Titanium Aluminum Nitride
- Excellent for aluminum, aluminum alloys, plastics, and titanium. (Not recommended for copper and brass).
- Gaining market share rapidly.
- Intermediate lubricity-0.3 coefficient.
- Hard (89 Rc) – Best edge strength.
- Lowest thermal conductivity.
- Best thermal stability. (1350º F)
AITiN – Aluminum Titanium Nitride
- Black in color.
- Harder, smoother variation of TiAlN.
- Created for abrasive and high temperature applications (> 800ºC).
- Creates an aluminum oxide layer during the cutting process.
- Popular for drilling, counterboring and milling.
ROCK RIVER TOOL, INC.
Rock River has been synonymous with innovation and quality since 1986.
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