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Q&A
Q-1 What is the most recommended condition for MSR? In case of MSR100R-2 e.g.) Load meter 90%
A-1 e.g.) Load meter 120%
Vc=150m/min z=0.2mm/t larger cutting depth and smaller 3rd Pass 2nd Pass 1st Pass
Q-2 cutting width 1st Pass apae:
1575 apae:
Required equipments for MSR? 4525
2nd Pass
3rd Pass
A-2 Maximum spindle revolution should be lower than 4000min-1. BT50 or larger.
*MSR is not only for Double column machining center.
The reason why not recommended for high RPM spindle machine is its less torque.
*Although MSR works with BT40 shank, maximum available fz is about 0.1mm/tooth.
Q-3 What is the points to remember in case of less power machine?
A-3 Do not use large size cutters.
63 or 80 is recommended
Set up conditions to get the largest available torque by checking torque curve of the machine.
Tried under condition of Vc=150m/min, enough torque was not gained because of high gear.
In this case, it has to be prioritized using Vc which can exert enough torque as Vc=120m/min.
Please increase cutting speed and decrease feed rate.
*Machine torque curve will be prioritized.
Q-4 In case of unstable workpiece.
A-4 Decrease feed ratio at start cutting * Almost all cases f moving workpiece happens when start machining
workpiece.
Effective for increasing cutting speed and decrease feed rate.
Vc=150m/min, z=0.2mm/t
Vc=200m/min, z=0.15mm/t
Q-5 What is the tool life? M
A-5 Chip weight: 700kg/Corner (Result by PR660)
Machining time: 90min. (calculated value)
Machining distance: 65m (calculated value) Milling
•How great 1000cc/min? About 7.8kg chips removed per minute
•Tool life time = 700kg (Chip weight)7.8kg (Chip evacuation amount per 1min) = 90min
•Machining distance= 90min (Time by the end of tool life) x 717mm/min (Table feed ratio per 1min)=65m
*In case of machining Vc=150m/min, apxae: 20x70mm, Vf=717mm/min.
*Tool : MSR100R-2 (6 Flutes)
Q-6 How to reduce chattering.
A-6 If chattering is caused under.
In case of chattering machining environment, following condition is recommended.
Reduce cutting speed and increase feed rate.
In case of Steel In case of Cast Iron
Vc=80m/min
z=0.25mm/t Vc=80 /min
z=0.35mm/t
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