Parting Off M-2

[DTHOMSON]

Looking for some recommendations for parting 2 inch diameter M-2. We are currently using a Sandvik insertable partoff tool that is .125 wide in their grade 4025. The speed is 225 and feed is .003/rev. The problem is we are only getting about 10 parts per insert and have about 450 parts to make. I'm open to all recomendations. Thanks in advance.

[gcode]

Does the part have a hole in it, or is it solid

all the way to the center???

[Threept82]

I use to cut off tough materials that were bigger

dia. by parting 1/4 deep, moving incrementally toward chuck or collet .030 and matching depth

continuing until cut off allows coolant and chip flow. Worked for me

[PE @ IHS]

I would peck and use a slower feedrate. Are you in CSS or RPM mode? You may wish to use CSS until you get to about .75 dia, then switch to RPM mode. If you stay in CSS mode, your RPM gets so high that coolant is deflected by the bar and not reaching the tool tip.

 

Try positive, neutral and negative inserts,

 

4025 is a good grade, so that is not the issue. Make sure the blade is slightly below center

[DTHOMSON]

The parts have a variety of holes from .125 to about 1.0 inches.

[chip]

quote:

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The parts have a variety of holes from .125 to about 1.0 inches

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A variety of holes? like 3 axis or a variety meaning variable bore?

 

Peter

 

quote:

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Bootleg V9.1 from Ebay, XP Pro

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LOL HA HA that was funny!

[DTHOMSON]

Each part has 1 hole in the center that can range in size from .125 to 1 inch. I should have explained my last post better. Thanks.

[JG]

D,

do you have a breakage problem or tool wear? if wear, wear? (sorry could not resist)for example on the top, front, sides, radii?