MILLING MACHINE ROTATION SPEED – ADVANCE CALCULATION

Cutting speed needs to be known to calculate the rotation. Cutting speed is the metric distance that the mill cutter moves in one minute. The cutting speed is calculated by using the following formula:

V = 3.14xDxN / 1000 m/minute

V = Cutting speed (m/min.)
D = Diameter of the mill cutter (mm)
N = Rotation speed (rotation/min.)

The Factors Influencing the Cutting Speed:

• The quality of the raw material and the coating of cutting set
• Cutting depth
• The requested quality of the surface
• The type of cutting tool set
• Type of workpiece material
• Power of the machine
• Whether using cooling fluid or not

INFORMATION YOU NEED TOKNOW ABOUT CARBIDE CUTTING SETS

• Storing carbide sets in a corrosive environment can affect the toughness and cause erosion.
• Do not use cutting sets with bare hands to avoid cuts or injuries.
• Be careful not to drop the cutting sets and avoid touching the cutting edges, especially when removing the cutting sets from their packages.
• Carbides have different thermal expansion coefficient compared to the steel and iron materials.
• If there is excessive noise in the machine, first increase the advance speed of the table, or decrease rotation speed of the spindle, if there is noise again, sharpen your sets.
• The chippings in brownish color on the table shows that the machine is operating in the most proper rotation and advance speed.
• Shrinking or expanding materials might cause accidents if they are processed at higher or lower temperatures than desirable ones.
• The cutting tool can be cracked or broken due to impact and over-tightening of the tool.
• Carbide cutting sets are extremely hard and also they are very brittle. (can be broken easily)
• Try to keep the size of the sets to the minimum depending on the operational information.
• Decrease the advance if the chip lifting surface is not clean.