Amazing how "free-cutting" this climb-milling process is with the rigidity, speed, lack of backlash & quality cutters available... the airblast preventing chip re-cutting is a big factor in tool life too I bet.. (I'm just a hobbyist machinist🙄) .. 😎👍☘🍺
+theslimeylimey That is just relection and camera angle, If the tool did what I think you think it looks like it did, the slot it cuts would be oddly shaped rather than straight.
Actually it did what you think he thinks it did! I'm not surprised at all as all tools deflect and sometimes they deflect a lot! That's why you have finishing passes...
Except that you can see the slot it makes as a full width cut is not misshapen. Deflection is caused by the unequal side load, in a full width cut the side load is equal for each side of the tool, any deflection would have been in the opposite axis of the camera view.
I disagree with that. Most of the cutting force is on the "face" of the cutter inline with the direction of cut and is anything but equal on the sides because the cutter wants to "climb" into the workpiece "perpendicular" to the direction of travel which is to the left from this camera POV. The slot will still appear straight because the cutting forces have stabilized once the cutter has penetrated up to its full diameter however the left face will have too much material removed and the right face not enough.
Sketch1994 Anybody that has worked in this business that uses carbide tools knows it only takes a few thousandths of deflection to shatter them. There's just no argument to be had about it, it's just simple physics.
+Shchuchev Sergey Hi, The tool life will depend on workpiece material, cutting conditions and tool set-up. In CoroGuide you can find indications of tool life for our tools. If you want a real life example where the tool life was improved we have a case available on our web. www.sandvik.coromant.com/coroguide www.sandvik.coromant.com/coromillplura Best regards, Janni Weber Global Product Manager - Round Tools Milling
+musi yadi Hi, The material is P2.1.Z.AN (DIN 42CrMo4). Hardness is 29HRC. Best regards Stefania Rizzuti Product Manager Global Application Specialist - Solid End Mills
Hi Hawcon and thank you for reaching out! In answer to your question ZEFP = 5, this is the number of effective teeth or flutes. In simple terms this SRT endmill has five cutting edges. However, the feed per tooth value illustrated is incorrect which we apologize for. The Vf = 160, this divided by the cutting speed of 160 m/min (4244 rpm) = 0.037 rounded up = 0.04mm, but we need to divide by the 5 effective teeth that equals 0.0075mm/tooth at centre line. Let us know if you have any more questions, we are happy to help! Have a great summer!
This might be a stupid question..but why is there not a electromagnet above this work..to grab the shavings flying off...I know most of the work is aluminum so of course that wont work..
The amount of chips that are coming off that tool compared to the magnet needed would would weigh the machine down.An furthermore a machinist makes a mess then decides to clean it up later.... an never gets around to it. So there would just be magnets covered in steel all over the shop.
Amazing how "free-cutting" this climb-milling process is with the rigidity, speed, lack of backlash & quality cutters available... the airblast preventing chip re-cutting is a big factor in tool life too I bet.. (I'm just a hobbyist machinist🙄) ..
😎👍☘🍺
Got to use these for test at work, incredible tool life. Would recommend.
Boogi101 how much machine time can one last for?
@@lineage13 about 12 minutes cut time
Why did they change the air on the competitor's tool?
pls note: NEVER cut the video until the tool has finished cutting!! absolute No-GO!!!!!!!
competitor Kennametal harvi2 i think
with 5 cutting edges. am i correct?
You are not using air blast in competitor’s tool. Sneaky!
Same question for me...please .
You can actually see the cutter deflect to the left at 2:38 and I bet that's a pretty sturdy spindle too.
+theslimeylimey That is just relection and camera angle, If the tool did what I think you think it looks like it did, the slot it cuts would be oddly shaped rather than straight.
Actually it did what you think he thinks it did! I'm not surprised at all as all tools deflect and sometimes they deflect a lot! That's why you have finishing passes...
Except that you can see the slot it makes as a full width cut is not misshapen. Deflection is caused by the unequal side load, in a full width cut the side load is equal for each side of the tool, any deflection would have been in the opposite axis of the camera view.
I disagree with that. Most of the cutting force is on the "face" of the cutter inline with the direction of cut and is anything but equal on the sides because the cutter wants to "climb" into the workpiece "perpendicular" to the direction of travel which is to the left from this camera POV. The slot will still appear straight because the cutting forces have stabilized once the cutter has penetrated up to its full diameter however the left face will have too much material removed and the right face not enough.
Sketch1994 Anybody that has worked in this business that uses carbide tools knows it only takes a few thousandths of deflection to shatter them. There's just no argument to be had about it, it's just simple physics.
how durability mills on these cutting data
+Shchuchev Sergey
Hi,
The tool life will depend on workpiece material, cutting conditions and tool set-up. In CoroGuide you can find indications of tool life for our tools. If you want a real life example where the tool life was improved we have a case available on our web.
www.sandvik.coromant.com/coroguide
www.sandvik.coromant.com/coromillplura
Best regards,
Janni Weber
Global Product Manager - Round Tools Milling
What material that is being done and how hard sir,
+musi yadi
Hi, The material is P2.1.Z.AN (DIN 42CrMo4). Hardness is 29HRC.
Best regards
Stefania Rizzuti
Product Manager Global Application Specialist - Solid End Mills
Sandvik Coromant can you guys give an estimated tool life for these kinds of feeds and speeds
Shoulder milling
🇲🇨👍
What is that ZEFP = 5 in the cutting Data
Hi Hawcon and thank you for reaching out! In answer to your question ZEFP = 5, this is the number of effective teeth or flutes.
In simple terms this SRT endmill has five cutting edges.
However, the feed per tooth value illustrated is incorrect which we apologize for.
The Vf = 160, this divided by the cutting speed of 160 m/min (4244 rpm) = 0.037 rounded up = 0.04mm, but we need to divide by the 5 effective teeth that equals 0.0075mm/tooth at centre line. Let us know if you have any more questions, we are happy to help! Have a great summer!
This might be a stupid question..but why is there not a electromagnet above this work..to grab the shavings flying off...I know most of the work is aluminum so of course that wont work..
Actually this could work....
because the compressed air blows them away? an electro magnet would fuck up all of you measurements haha
No..I mean while it is cutting the work...
The amount of chips that are coming off that tool compared to the magnet needed would would weigh the machine down.An furthermore a machinist makes a mess then decides to clean it up later.... an never gets around to it. So there would just be magnets covered in steel all over the shop.
BomenJager Digital scales (like in calipers) use capacitance, not magnetism
Slot milling
Pocket milling