2 inch face mill problems

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2 inch face mill problems

This topic has 52 replies, 21 voices, and was last updated 9 September 2018 at 01:01 by gary arthur.

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14 May 2018 at 20:33 #354040
JasonB
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@jasonb
Martin, I'll say it once again Read the rest of the thread.

-I know what size cutter I'm using it was you that said it looked like a 1" cutter. 50mm cutter on 45mm wide work is not using the full width of the cutter.

-That is cast iron I'm cutting don't know of anyone who would suggest using cutting fluid on that.

-DRO has nothing to do with flex but does come in handy to eliminate the need for compensating for backlash.

Why not watch the other video I posted in the thread which you have obviously not done. CI first cut dry 45mm wide 1mm DOC, then steel with a little soluable oil 32mm wide 1mm DOC then aluminium with some paraffin 45mm wide 1mm DOC faster feed. All cutting well with no flexing as the tips were a better quality and geometry than the cheap Bangood ones.

Hardspots, yes one of the reasons I tend to use inserts on iron castings as you often find them on this material and it will blunt HSS as soon as they touch a hard spot.

You will notice that the chips from the steel are coming off blue, the suds really is not doing anything and may as well not have been used, this shows the tip is working right. Your loose wobbly chuck is most likely what is damaging inserts as well as pussy footing about with them.

Edited By JasonB on 14/05/2018 20:35:55
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18 May 2018 at 09:37 #354491
Jon
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@jon
Totally agree with Muzzer and Jason been there done it until tried APHT, though would want coated for steels.

To give you some idea some years back we couldnt get the bearings out of a Skoda hub, think GEN2?. The only tools had to hand were those WHT APHT meant for aluminium plunged down broke through cage, hardened steel bearings (2), cage another row of cage, hardened steel bearing and cage.
Dont get me wrong the tips were really shot after first row.

As a compare quality non chinese carbide Garr 1/2 the dia totally gone and only just marked the outer cage and they are a brilliant cutter for normal use and last.

In saying that the tips were not happy opening out much softer hardened tool holders to accept larger tooling had to use the Seco MM16-16019-A30-E06 and you dont want to know the price.
9 September 2018 at 01:01 #371018
gary arthur
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@garyarthur48070
Posted by JasonB on 07/05/2018 07:08:35:

I'll give it another go with a higher feed rate but as my other cutters produve a good finish at about 150mm/min and the machine complains above that I have a feeling it is more down to the rigidity of the machine not being able to push the relatively blunt edge of these tips through the work hence the tool riding up over the work.

This is the sort of finish I can get with the 40mm 3 tip tool which is far better than the Bangood gives as similar feeds

Lots to think about here as someone who has just bought a Banggood facemill with 'blue nano' cutters but not tried it yet.

Meanwhile, slightly off-topic but Jason that is a beautiful piece of machining.

gary

Edited By gary.a.ayres on 09/09/2018 01:16:17
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