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MSR
Q&A
Q-1 What cutting conditions are recommended in most cases for MSR? In case of MSR100R-2 e.g.) Load Meter 90%
A-1 e.g.) Load Meter 120%
3rd Pass 2nd Pass 1st Pass
Q-2 Vc= 500sfm, fz = 0.008ipt, larger cutting depth and smaller cutting width 1st Pass D.O.C. ae:
2nd Pass 0.592.95" D.O.C ae:
1.770.98"
What is the required equipment for MSR? 3rd Pass
A-2 Maximum spindle revolution should be lower than 4000RPM. BT50 or larger.
Q-3
* The reason it is not recommended for high RPM spindle machines is due to their lower torque value.
* Although MSR works with BT40 shank, maximum available fz is about 0.004ipt.
What are the points to remember when using a lower horsepower machine?
A-3 Do not use large size cutters. 2.5" or 3.0" are recommended90 LEAD
Increase cutting speed and decrease feed rate.
Set up conditions to get the largest available torque by checking torque curve of the machine.
In conditions of Vc = 500sfm, insufficient torque was amiable due to being in high gear.
In this case, use Vc which can exert enough torque, such as Vc = 400sfm.
E * Machine torque curve is a priority.
Q-4 How do I deal with an unstable workpiece?
A-4 Decrease feed rate during the * Vibration and workpiece movement are • Effective combinations for maintaining
initial cut. most likely to occur upon the cutters cycle time while reducing the feedrate.
initial entry entry into the cut.
Q-5 What tool life can I expect? Vc=500sfm, fz=0.008ipt
Vc=650sfm, fz=0.006ipt
A-5 Example:
Q-6 Chip Weight: 1543lbs/Corner (Result by PR660)
Cutting Time: 90min. (Calculated Value)
Cutting Distance: 213.25ft (Calculated Value)
Metal Removal Rate? About 17.20lbs Chips Removed per Minute
Tool Life Time = 1543lbs (Chip Weight) 17.20lbs (Chip Evacuation Amount per 1min) = 90min
Cutting Distance = 90min (Time by the End of Tool Life) x 28.228ipm (Table Feed Ratio per 1min) = 213.25ft
* Cutting Vc = 490sfm, D.O.C. x ae: 0.787" x 2.756", Vf = 28.228ipm.
* Tool: MSR100R-2 (6 Flutes)
How do I reduce chattering?
A-6 If chattering occurs, then the following conditions are recommended.
Reduce cutting speed and increase feed rate. In case of Steel In case of Cast Iron
· Vc=250sfm · Vc=250sfm
· fz=0.014ipt
· fz=0.010ipt
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