Общий каталог Mitsubishi 2020 - 2021

Selecting Cutting Conditions

Note) Tool life and surface finish accuracy can be increased by changing the threading method from flank infeed to modified flank infeed.

Chip control can be improved by increasing the cutting depth in the later half of passes.

Cutting depth and the number of passes		Feature and benefits of Mitsubishi products
aSelection of the appropriate cutting depth			· Insert grades, specially produced for threading tools, ensure
	and the right number of passes is vital for		highly efficient cutting by enabling high-speed machining and
	threading.		a reduced number of passes.

For most threading, use a "threading cycle program," which has originally been installed on machines, and specify "total cutting depth" and "cutting depth in the first or final pass." Machining Cost
Cutting depth and the number of passes are easy to change for the radial infeed method, thus making it easy to determine Reduction the appropriate cutting conditions.

aIncreasing tool life aTo achieve highly efficient machining

Recommended method - Modified flank infeed. revolution and rigidity of the machine.)

Recommended method - Radial infeed

A reduced number of passes can improve chip discharge
To prevent crater wear - because of the thicker chips generated. Recommended method - Flank infeed

aPreventing chip problems aPreventing vibration

change the coolant supply to a downward direction. half of passes and lower the cutting speed.

When using the radial infeed method, set the minimum cutting depth at around .008 inch to make the chips thicker.

Tangled chips during internal threading can damage the insert. In these cases, pause slightly away from the start A final pass should be performed at the same depth of cut point and clear the chips with coolant before every pass. as the last regular pass.
Change to M-class inserts with a 3-D chip breaker.
When using the flank infeed method, change to radial infeed only during the final pass.