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Diamond Back Rougher Speeds & Feeds

Diamond Back Rougher Speeds & Feeds

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DIAMONDBACK DVH: 45 Degree Variable Helix – Primarily for high-speed machining of aluminum, and other non-ferrous materials including brass and bronze alloys.

The Diamond Back Rougher is designed for maximum Metal Removal Rates (MRR) in Non Ferrous Applications. 

Although the charts below depict a maximum chip load per tooth (IPT) value, your maximum may be lower due to machine horsepower, machine torque, toolholder and/or workholding.

The “General Operating Range” is based upon 1X diameter (ADC / DOC) in full diameter (RDC / WOC) SLOTTING. The minimum chip loads remain constant for all applications, however, the maximum chip loads can be increased for side milling applications in finishing, heavy roughing & light roughing. 

We've successfully run our 3 flute, 3/4 diameter end mill in a slot 1.5" deep at at 14,000 RPM and up to a .040" chip load per tooth.   Keep in mind the not all machines have the torque or horsepower necessary to handle these types of cuts.
  • Remember to consider the Torque Efficiency of your CNC machine.
  • The correct toolholder will improve production and reduce cycle time.
  • Climb Milling is recommended.
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Diamond Back Speeds & Feeds for "N" Non Ferrous Materials

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You can also find this table on Page 33 of our catalog
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You can also find this table on Page 33 of our catalog
  • Ramp Angle Entry: 3° - 10°
  • Slotting Straight Entry: Reduce feed by 25% under or at full diameter engagement.
  • Slotting Roll-In Entry: Reduce feed by 25% under or at full diameter engagement.
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You can also find this table on Page 33 of our catalog

One of the most common causes of chatter with our tools is running tools with TOO LIGHT of a chip load. Most chatter problems can be fixed by INCREASING the chip load per tooth (IPT)

Heavy Roughing (Side Milling) Defined:
ADC (Axial Depth of Cut) = up to 1X dia.diameter 
RDC (Radial Depth of Cut) = 30% – 50% of diameter

Light Roughing (Side Milling) Defined:
ADC (Axial Depth of Cut) = up to 1X diameter
RDC (Radial Depth of Cut) = 15% – 30% of diameter


Finishing (Side Milling) Defined:
ADC (Axial Depth of Cut) = up to 1X diameter 
RDC (Radial Depth of Cut) = 4% – 15% of diameter 
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Imperial
SFM = RPM X .262 X Tool Diameter 
RPM = SFM X 3.82 ÷ Tool Diameter
IPM = RPM X IPT (CLPT) X Number of Flutes 
IPT = IPM ÷ (RPM X Number of Flutes) 
MRR = RDC X ADC X IPM (a.k.a. CIM) 
Milling Speed and Feed Calculator

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Destiny Tool
18434 Technology Dr.
​Morgan Hill, CA 95037
US TF: 800.527.8665  
Tel: 408.988.8898    
​Fax: 408.988.2606
info@destinytool.com

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 WARNING: These products contain Cobalt, a chemical known to the State of California to cause cancer. ​For more information go to www.P65Warnings.ca.gov
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