The "thick to thin" methods (down milling) always give longer tool life, how much depends on the material you are cutting, in "easy to machine" material the difference is not that much, 10-20%, but on more difficult material, such as HRSA and duplexa stainless materials you could have 300-500% longer tool life. Best regards / Hans Lindberg, Application specialist milling
Hi, Thumbs up for all the videos you post. I have a question: could you provide me with some data on how much longer tools last when using roll in and out, climb milling and so forth?
Hi, When going out of the material you always exit in mor favarobal angle, during the entering the exit is always 90 degree. Best regards / Hans Lindberg, Application specialist milling
I wonder if these same rules apply to a CNC working on wood, as opposed to metal. There are some variables involved where you could be ripping out/splintering the wood, when going against the grain.
I dont mean to be so off topic but does someone know of a method to get back into an instagram account?? I somehow lost my password. I love any help you can offer me!
@Alexzander Maximo i really appreciate your reply. I got to the site on google and I'm in the hacking process now. I see it takes quite some time so I will get back to you later when my account password hopefully is recovered.
This was a good way of presenting the situation. However, we inadvertently make thin-to-thick and thick-to-thin chips during slotting with an end mill. Also, we wouldn't be able to reposition the cutting tool in the mentioned scenario. What would you recommend to avoid having such a problem?
Hi there In slotting it is the same as in shoulder milling - from thick to thin. For the entrance of a slot we always have the problem of a thick chip in the end, but this we can avoid by programming an roll-in entry
I'm confused, I'm a beginner with a manual mill (Bridgeport clone). I was told conventional milling was usually better than climb milling. Using the conventional milling method how do you enter the work to get the "thick to thin" results?
Thank you for the video. What do you recommend for exiting the cut with a big face mill? At 70% engagement you have a similar problem with the left side of the cutter as the leading edge breaks out of the part. Thanks for the help.
I do some manual milling, no CNC. Thick to thin basically seems like climb milling, which is not so good on an old manual mill. Thick to thin doesn't work w/ conventional milling, correct? Thx. Marty
"No climbing on manual mill" is a warning for beginners! There are situations where you have to climb on manual, and, if it's properly done, there's no danger. Experienced machinist can judge where/when it's OK or not. There are different forces depending how you cut your part. Climbing can be better, even on manual machines... www.cnccookbook.com/CCCNCMillFeedsSpeedsClimbConventional.htm
@@sjwsbetaskiller6218 Hi, according to the link you provided, climb milling produces an initial thin chip which gradually increases its thickness. Whereas this video states the opposite. I think this video is right. However I would appreciate if you could explain. Thanks
@@luiasori87 The link seems to be a little misleading on the matter. True, the cutter reaches the thickest point midway. But it gets thinner coming to the exit.
They've already showed how you're WRONG. You enter the cut tangentially. Moving in centerline creates thin to thick to thin as per the video you apparently didn't watch.
I'm not a machinist but if the tool moves say 20 thousandths per revolution wouldn't the chip for a 4 flute tool be pretty much 5 thousandths all the way? That how far into the metal the tool has gone since the last flute was there.
Just look at the video because it's hard to explain with just text. But the answer would be no. At the thickest spot yes, that would be the case, but if you look at other areas where the chips appear thinner, what has happened is the tool has moved, 5 thousands, in Y, but not 5 thousandths in the direction perpendicular to the surface of where the material is being removed. You could break it down using pythagorean theorem and SOH CAH TOA if you were inclined, to find the chip thickness at any point. Only the point that is in line with the path of the tool would have the 5 thou thickness.
The "thick to thin" methods (down milling) always give longer tool life, how much depends on the material you are cutting, in "easy to machine" material the difference is not that much, 10-20%, but on more difficult material, such as HRSA and duplexa stainless materials you could have 300-500% longer tool life. Best regards / Hans Lindberg, Application specialist milling
Hi,
Thumbs up for all the videos you post.
I have a question: could you provide me with some data on how much longer tools last when using roll in and out, climb milling and so forth?
Hi,
When going out of the material you always exit in mor favarobal angle, during the entering the exit is always 90 degree. Best regards / Hans Lindberg, Application specialist milling
I wonder if these same rules apply to a CNC working on wood, as opposed to metal. There are some variables involved where you could be ripping out/splintering the wood, when going against the grain.
It will really helps me to practice milling. Thank you.
I dont mean to be so off topic but does someone know of a method to get back into an instagram account??
I somehow lost my password. I love any help you can offer me!
@Boone Rowen instablaster ;)
@Alexzander Maximo i really appreciate your reply. I got to the site on google and I'm in the hacking process now.
I see it takes quite some time so I will get back to you later when my account password hopefully is recovered.
@Alexzander Maximo It worked and I finally got access to my account again. I'm so happy!
Thanks so much you really help me out !
@Boone Rowen happy to help xD
This was a good way of presenting the situation. However, we inadvertently make thin-to-thick and thick-to-thin chips during slotting with an end mill. Also, we wouldn't be able to reposition the cutting tool in the mentioned scenario. What would you recommend to avoid having such a problem?
Hi there
In slotting it is the same as in shoulder milling - from thick to thin. For the entrance of a slot we always have the problem of a thick chip in the end, but this we can avoid by programming an roll-in entry
I'm confused, I'm a beginner with a manual mill (Bridgeport clone). I was told conventional milling was usually better than climb milling. Using the conventional milling method how do you enter the work to get the "thick to thin" results?
Thank you for the video. What do you recommend for exiting the cut with a big face mill? At 70% engagement you have a similar problem with the left side of the cutter as the leading edge breaks out of the part. Thanks for the help.
Your channel its Awesome
Are there films for Korean Engineers? We need Korean lylics ^_^
I do some manual milling, no CNC. Thick to thin basically seems like climb milling, which is not so good on an old manual mill. Thick to thin doesn't work w/ conventional milling, correct?
Thx.
Marty
"No climbing on manual mill" is a warning for beginners!
There are situations where you have to climb on manual, and, if it's properly done, there's no danger. Experienced machinist can judge where/when it's OK or not.
There are different forces depending how you cut your part. Climbing can be better, even on manual machines...
www.cnccookbook.com/CCCNCMillFeedsSpeedsClimbConventional.htm
@@sjwsbetaskiller6218 Hi, according to the link you provided, climb milling produces an initial thin chip which gradually increases its thickness. Whereas this video states the opposite. I think this video is right. However I would appreciate if you could explain. Thanks
@@luiasori87 The link seems to be a little misleading on the matter. True, the cutter reaches the thickest point midway. But it gets thinner coming to the exit.
The "never position cutter on centerline" rule of thumb should be mentioned here, as it creates the thickest chip on entry and is thus an exception.
They've already showed how you're WRONG. You enter the cut tangentially. Moving in centerline creates thin to thick to thin as per the video you apparently didn't watch.
I'm not a machinist but if the tool moves say 20 thousandths per revolution wouldn't the chip for a 4 flute tool be pretty much 5 thousandths all the way? That how far into the metal the tool has gone since the last flute was there.
Just look at the video because it's hard to explain with just text. But the answer would be no. At the thickest spot yes, that would be the case, but if you look at other areas where the chips appear thinner, what has happened is the tool has moved, 5 thousands, in Y, but not 5 thousandths in the direction perpendicular to the surface of where the material is being removed. You could break it down using pythagorean theorem and SOH CAH TOA if you were inclined, to find the chip thickness at any point. Only the point that is in line with the path of the tool would have the 5 thou thickness.
nice vid.