TECHNICAL INFORMATION FOR SAW BLADES
CUTTING FEED
Surface quality
The quality to be obtained on a surface is associated to the cutting feed especially of each tooth feed and the number of teeth of the tool.
The feed speed can be easily calculated as following:
Vf = Fz x n x Z m/min 1000
Whereas:
Fz= Feed Speed per edge in mm/rotation. n= Maximum allowable cutter rpm.
Z= Number of teeth.
GRAPHIC TO DETERMINE the number of teeth / Feed
FEED BY TEETH RECOMMENDED
for different kinds of materials
Fz (mm) Materials
0,10 - 0,20 Solid wood
0,05 - 0,25 Particle board
0,03 - 0,08 Chip board
0,03 - 0,06 Coated chip board
0,05 - 0,12 Aluminium
0,03 - 0,08 Al-Mg-Cu
0,02 - 0,05 Fiber cement
0,05 - 0,15 Thermoplastics

RECOMMENDED CUTTING SPEEDS
for different kinds of wood
Vc (m/s)
60 - 100 Soft woods
55 - 90 Hard woods
50 - 85 Exotic wood
50 - 80 Particle board
60 - 80 Chip board
60 - 80 Coated chip board
60 - 80 MDF
30 - 60 Phenolic laminates
15 - 50 Corian®
40 - 70 Aluminium
40 - 60 Al-Mg-Cu
40 - 60 Fiber cement
EXAMPLE:
To determine the feed of a saw blade with 36 teeth with a feed of Fz=0,15 and an angular speed of 6000 rpm.
Vf= 32,4 m/min
CUTTING SPEED
The cutting speed, i.e. the speed of the cut- ter edge radius is calculated considering the diameter of the cutter on the cutting point and in the number of rotations (angular speed).
It is calculated from the formula
Vc = D x π x n m/s
1000 x 60
WHERAS:
D= External diameter in mm
n= Number of rotations per min.
π= Constant = 3,14
Example:
To determine the circular speed (RPM) of a saw blade with a diameter of 300 mm and a cutting speed of 70 m/s.
rpm = 4500

GRAPHIC TO DETERMINE THE DIAMETER OR RPM OF CIRCULAR SAW BLADES.


