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 MODIFICATION

• 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)