Can a REAMER Be Better Than a BORING HEAD??? | Reaming vs Boring
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- Опубліковано 28 лис 2024
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#CNC #Machining #Machinist
I was a machinist for 30 years and this is how it works, Center drill, drill, bore for position, ream for size. Standard procedure for tool maker.
For critical location I would use a truing EM. Straighten out the hole so a ream will follow with less shifting
Yup!
Does it make a difference if you drilled with a carbide drill? We get good results with those but I'm sure it depends on your level of precision.
@@larryrobinson7492 always use carbide drills… HSS drills nowadays are for hobby use… lol seriously!
Do you have to center drill if you are going to use a carbide drill?
Absolutely, High performance Carbite reamer from Gühring Are extremely fast and powerful. Greatings from Germany
HR500 :)
if drill leans a bit, reamer will follow. at least boring will create a straight hole
I do like this :
I start with a smaller drill, with a mill I create a straight hole, I do another quick drill leaving 0.2 mm and then finish with a reamer.
With boring you save some time, but if you don’t have it you can do like this.
@@matteomagni2084 I’m curious why you drill after milling instead of just milling to the pre ream size?
Thank you!! I hate reamers!!
@@poetac15 if he has cheap endmills they may not be Center cutting? I guess
@@matteomagni2084 just had too many problems chasing tolerances with reamers. I avoid where possible
This is by far the best video (IMO) that you guys have done.
Informative (if not a bit fast) & isn't modelled off monster truck rally advertisement.
One time I jumped my VF3 over 16 tormach 770s
If you want to move things up another notch, then after boring slightly undersize, I sometimes roller burnish to finish. Roller burnishing is a cold forming process that takes the precision and surface finish to another level, very much application dependent but for some jobs it can't be beat.
Good content...
Getting old listening to Titan back story videos 17 times a week.
Dude! Dont be negative! We have ONE goal. To help our industry. Who else does that free of charge?
@@barrysetzer GOTCHA!!!
Thanks for the response.
I get it and you guys are awesome. Just got a little repetitive lately with the back story vids. These short videos are way more helpful for new comers.
That's my opinion (stinky as it is).
@@mylesburdett7518 its tough keeping everyone happy. If i say “endmills are awesome “ i get 875 people that disagree.
I love boring. It's an incredible skill to truly learn. It translates to so many sides of machining....
You should never put a reamer into a drilled hole . You are correct that it will follow the drill. If you true up the hole first before the reamer then your reamer should provide an exceptional hole. I suggest truing the hole with a fishtail, not by interpretation.
Are you speaking mill or lathe? I ream drilled holes all day long on a mill
For 1 to 10 parts of non standard sizes and shapes, bore. For correcting rough, or eccentric holes, bore. For correcting taper and bell mouth, bore. Otherwise, ream, or use a Watts cutter, see if I care.
Won't reamer also fix tapered hole?
While not too stiff boring bar could also be deflected at the bottom of the hole if there is more material to cut.
@@Stasiek_Zabojca it depends on the amount of taper on both counts. If there is a heavy amount of taper, it could make the reamer snap off in the hole. A boring head would not allow for that. Reamers are typically much faster than boring, but again, depends on tool life and ease of replacement.
Maybey some time you can talk a little about burnishing tools for the people out here.
toolmaker for 30 years and I will always bore machine a pocket before reaming you just can't trust a drill
One advantage of using reamers can be the hole depth, Boring heads will become unstable with too much stickout, and on small diameter holes reamers can still make very deep precision holes
I was suprised there was no mention of position. I believe the boring head will provide a tighter positional tolerance than reaming a drilled hole.
Absolutely correct. But it kinda blends in with the “reamer follows the hole” idea
Nice to see this. I just bought a huge load of reamers on Ebay. Must be about 100kg or 220lbs. Many unused.
How much?
@@danl.4743
I paid about £150 or $200 for hundreds of reamers. Mainly Morse taper 1 to 4.
He is correct in as saying a reamer almost always follows the hole.
Yep, when I had to hold .0002 locations on a reamed hole I had to center drill, pilot, drill, then make a slight counter bore with a 4/5 flute endmill for the reamer to be on location. Iv seen guys bend a reamer .062 to follow an off hole
@@adammiller4879 if you give it enough shank length it will follow. If you choke up to much and make the reamer super rigid it will act like a boring bar. That's the only time a reamer does not follow a hole.
@@rjwalker1973 problem is management wouldn’t let me buy correct tools, a lot of the reamers I had would be 8-12 inches long for a 1 inch deep hole….
Mapal has a high performance when feed can be explored also Romicron Boring heads are very accurate and easy to handle! Hanna Reamer too!
As long as you drive an undersized endmill into a hole before reaming, it is more accurate than a borer. You can ream dowel holes pretty tight
SOP I agree to an extent. If your trying to straighten out a hole that is way out of round an end mill will flex a bit trying to follow the hole. Nine times out of ten I would use a "reaming end mill", then a reamer.
Hi Titans Love from Pakistan learn alot from.your videos and making cnc to extreme machining thnkx
My former boss died 10 years ago. He was from Pakistan. He took great care of me. Paid me 4x the average machinist. Sadly, I now work for his socialist wife from New Zealand.
Nice tips. Liking these style of videos - nicely packaged tidbits.
Helical interpolation is my go to.
up until a point.
IT6 or even IT7 can be difficult depending on how good of a machine you have and how well it's been set up. An expensive machine with good maintenance and the holes being small makes it easy. Long large holes you just can't adequately do with an endmill. For example, quadrant misalignment of a couple microns just ruins a nice interpolated hole. If it's deep they're also easy to make them tapered because your helical interpolation will unevenly wear out your mill. Expect the hole ontop to be slightly oversized because it's been touched by the top of the tool that has not seen a lot of wear compared to the bottom where the only contact point of the tool was the worn out end of the endmill.
This topic is basically about ~10 micrometer size tolerance fields, long holes with a tolerance and strict geometric tolerances. Where the choice of tool can have a large impact.
Anyone can do a shallow 8 H7 on a decent machine with an endmill. That's not an issue.
this is true but if the machine is new and the cutter is new and the material is soft its no big deal. for long bores i use shortest flute lengths and helical from top to bottom
These are the best Titan's videos.
I spoke with representitive of Kaiser boring heads : Not only reamers have a fixed size ...he said. Me :?????
We ship literallly hundreds of pounds per month to ASML where a boring head is set to a specific size . And its left ALWAYS at that size as precision at ASML is very important!!!!
Solid carbide drill reamers(dreamer) works pretty good within .0005"
Why wasn't there feeds and speeds for a reamer...? I need more info on reamers
The choice between a reamer or a boring head depends on a large range of paramaters (machine, qty of parts to produce, accuracy needed for the final hole, depth, size …) it’ sa large part of my job everyday with my customers : making the best choice !!!
there is nothing better ... than high-hole quality.
Jig Grinding > Reamer > Boring Head
For as long as a boring tool can fit in that hole, I always and will always bore.
Floating head reamer for the win
If your machine is t square, that will translate into your bored hole as well.
How does tool life differ between readers and boring heads? I was told a reamer I looked at could go 45,000 inches without losing tolerance of about 1 thou. Boring head the same?
Yep it can. In the airlines as a machinist on small parts and having .000. -.0003 tolerance. Reamer is the answer.. simple
A reamer can't hold a .0003 tolerance. What are you talking about? if it's less than .001, I want to use a bore.
@@gredangeo then it's operator error. A boring head always has pushoff and deflection to worry with. I like them better myself, but a reamer in a properly drilled hole will always cut the same, as long as material consistency is very similar and tool edge is still in good condition. I will say that Kaiser are among the best there is that I've gotten to use. They usually cut dead nuts what you dial out depending on insert used. 👍
@@gredangeo wanna bet. Back of the reamer is ground to a given size. Reamer is pulled through backwards by hand.. ON THE AIRCRAFT sometimes yo cannot put the mart in a machine. It has to be done on the actual aircraft. And your darn right it will. Its all about the setup and operator.
@@gredangeo its not the prefered method. But on aircraft sometimes its the only way
I'm trying to ream a hole for a 1/4 in dowel pin and I was wondering if the McMaster reamers are for manual or machine reaming.
In the case of reamers with welded cermet, the line speed is even faster.
kaiser boring heads are the one you want
Titan, what brand is that tool holder shown right off the bat in the video! We are looking for a way to keep our tools safe, clean, and all organized. Thank you in advance!
It looks like Apfel
Thats Apfel . Build for cutting Tools and also for bending tools. Made in Germany.
That's the Haimer modular tool storage system, and I love it. It's the best I've ever seen, and since I started working here at Titans of CNC, I laugh at every other system out there.
@@barrysetzer thank you so much !
Any thoughts on if it’s worth it to run floating tool holders for reaming? I am making precision bores for bearing fits, they are shallow, under 1” diameter and cut in aluminum
What depth?
If shallow, don't ream! Bore them!
Very shallow, 4mm deep on a 23mm diameter and 4mm deep on a 15mm diameter. I have 3 precision bores in a production setting, I can either buy 5k worth of boring heads or $500 in reamers. I have one micro boring head and 2 short reamers bought for it so far.
Reamers and boring heads are both good for tight tolerance holes but reamers tend to be unreliable for optimal surface finishes whereas boring heads will consistently produce reliable finishes.
Good info
one new guy wouldn't give a good solid pull, and kept destroying the tools I ran a drill press reamed 4 hours a day one summer.
feed rate matters always
Damn skippy.
@@darinr9424 it's amazing what companies can convince broke teenagers to do
I don't want to do this job anymore.
😮😮
This isn't boring to me. Don't ream me out, okay?
Can you please switch to metric? Its so awkward with this inch/1000. Nice Video by the way
What is awkward about measuring by 1000th? It’s literally just moving the decimal place, just like metric...
This video was boring... hope I don't get reamed in the comment.... :)
Great video but stupid title. Greetings from Croatia