2D HST IN 304 SS

[billet programmer]

I haven't used any of the high speed toolpaths yet so I've been looking to try it out. I have an application in 304 SS that I would like to try it out in. I have to machine 30 3" holes thru 1" plate.

 

Do any of you have any experience with HST in 304? Is this a good application for a high speed toolpath? if so, which one?

 

Thanks a lot in advance. I've been visiting this forum a lot lately and always learn something, so thanks to all of you.

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I use HST Core Roughing and HST Waterline Finish on 303 a lot, but 304 is a totally different animal. The HST should work great as long as you have the correct tooling and Speed/Feed.

[Mic6]

Try Dynamic

[Chris Rizzo]

Are they round holes? If so and you got h.p. i'd say drilling would be the quickest. Or at least pop a hole in first so you don't have to wear the end of the tool off getting in there, then 2d pocket spiral with like a 5% stepover to use the full flute length. That is if the hole is roundish, and you can't drill that big from the get go.

[Colin Gilchrist]

Circle Mill has a "roughing" option that lets you spiral from the center of the hole outwards. You can use this in a high-speed fashion to machine a circle. I would go about 8% on the radial stepover.

 

+1 to pre-drilling an entry hole. You'll save time and the tip of the tool.

[gcode]

I'd drill a 1" hole thru

then use a helix toolpath and an 1.25"

Mitsubishi hifeed endmill.

[3R!< W3NG3R]

+1 to the mits feedmill.

 

 

you could even use a 2" and helix it through without a start hole. Then finish it with 1 or 2 passes.

[Goldorak]

+1 for the circle mill + roughing

 

1 drill thru

2 plunge in center

3 rough with 15% step over and a high feed and uncheck the helix roughing

 

i use 1/2 niagara stabilizer at 4500RPM and 120 IPM in 304 on a rigid machine, if it's not i simply cut the feed rate

 

PS dynamic dont seems to work well in round holes , circ mill will give you a better result and you can use cutter comp