here is a hint- FREEZE IT it machines great frozen. measure it when roughed. then thaw it completely to room temp. record how much expansion occurs. freeze then make final cuts taking into account the expansion factor.
Fridge freezing isn't nearly cold enough. I've tried overnight dry ice freezing and that wasn't cold enough. I've frozen rubber with immersion in liquid nitrogen and that works, but I still had to set up a drip line on keep misting the rubber with LN to maintain the necessary stiffness for machining and to overcome the heating of cutting. Cut machining with blades is a handy trick, but blades aren't good at a lot of other useful operations a lathe can do like internal boring work or grooving.
I've used mounted box cutter blades, heated up with a propane torch and bent 90 degrees. Straight box cutters work well to cut rubber tubing slid over aluminum bar.
@@A_Bit_of_Thought on a mill I'd try submerging and milling it in a bath. A friend turned N_2 frozen rubber, so that's not just a theory. You can re-freeze it before it gets too warm, and go on machining... but usually rubber parts are not too fancy 200 operations parts anyways 😉
@@krap101 Just did a quick search on automotive antifreeze/water mixes and those mixes can be made to stay liquid down to -84 degrees fahrenheit. I don't know if that would be cold enough to render rubber solid enough for precision machining.
Nice video. The dishwashing lather is good coolant and lubricant for rubber. Especially for parting off and grooving. I am using hacksaw blades as they are more stabile.
Very interesting and effective! My first inclination would have been to freeze it and use more conventional tools, but the surface finish wouldn’t have been as good. (Not could I have made a thin-walled cylinder as you did.)
You and your own tools are very smart. With conventional tools, the surface isnt good and final measurements are poor. Thank you for share your knowledge
I like your logic on cutting rubber fella. What I am wondering is how much distortion did you get when the rubber was removed from between the lathe chuck and center ?? When I machined rubber I would just freeze the material. Liquid nitrogen works wonders.
We have always ground rubber or other soft materials such as O-rings. Either on a cylindrical grinding machine or with a grinding attachment on a lathe.
Interesting, certainly I think that high quality serrated knives (those used when eating barbecue) would do well: they come already shrapened and hardened. Regards.
Hello 職人（上手）, I recommend to facing up the surface before You will begin pre-drilling. I'm still looking for Japanese-English or Japanese-Polish dictionary about technical language.
Scalpel blades work great. They can be bent slightly to provide an excellent surface finish.
I always surrender to his excellent demonstrations. It seems to me one of the best channels that exist in its subject. Congratulations.
here is a hint- FREEZE IT it machines great frozen. measure it when roughed. then thaw it completely to room temp. record how much expansion occurs. freeze then make final cuts taking into account the expansion factor.
Fridge freezing isn't nearly cold enough. I've tried overnight dry ice freezing and that wasn't cold enough. I've frozen rubber with immersion in liquid nitrogen and that works, but I still had to set up a drip line on keep misting the rubber with LN to maintain the necessary stiffness for machining and to overcome the heating of cutting.
Cut machining with blades is a handy trick, but blades aren't good at a lot of other useful operations a lathe can do like internal boring work or grooving.
なるほど！天才！
そんな発想なかったです
とても勉強になりました
有難うございます😆
That was a very neat demonstration. Thank you!
intriguing and innovative - beautifully done as always
I've used mounted box cutter blades, heated up with a propane torch and bent 90 degrees. Straight box cutters work well to cut rubber tubing slid over aluminum bar.
これはなかなか面白いですね😆
いつも参考にしてます‼️
Great video, as always 👍
Nice!
You can freeze the rubber in liquid nitrogen and use normal cutting tools, though 😉
Need to figure out how to keep the rubber cold while machining it. Think of what you could do on a milling machine if you could keep the rubber cold.
@@A_Bit_of_Thought on a mill I'd try submerging and milling it in a bath.
A friend turned N_2 frozen rubber, so that's not just a theory. You can re-freeze it before it gets too warm, and go on machining... but usually rubber parts are not too fancy 200 operations parts anyways 😉
@@A_Bit_of_Thought I think folks use some sort of coolant and a chiller for heat sensitive parts. Maybe some water soluble alcohol type mixtures...
@@krap101 Just did a quick search on automotive antifreeze/water mixes and those mixes can be made to stay liquid down to -84 degrees fahrenheit. I don't know if that would be cold enough to render rubber solid enough for precision machining.
@@A_Bit_of_Thought They rather grind rubber than use a lathe tool or mill. It gives a better finish and has no cutting deformation.
Nice video.
The dishwashing lather is good coolant and lubricant for rubber.
Especially for parting off and grooving.
I am using hacksaw blades as they are more stabile.
Very interesting and effective! My first inclination would have been to freeze it and use more conventional tools, but the surface finish wouldn’t have been as good. (Not could I have made a thin-walled cylinder as you did.)
これは凄い！参考にさせて頂きます👍
Fascinating! Thank you
Great idea my friend 😳 absolutely love it 😍
You and your own tools are very smart. With conventional tools, the surface isnt good and final measurements are poor. Thank you for share your knowledge
This is a very clever person.
Excellent job 🇵🇹
He gets straight to the nuts and bolts of the issue. 👍
Я даже и не мог представить что для резины годом сделать точкой резец , классно 👍👍👍 !
Токаря так и режут резину, также ножовочными полотнами и быстрорезом
Slick way to make a dead center
Great video, Thanks you.
I like your logic on cutting rubber fella. What I am wondering is how much distortion did you get when the rubber was removed from between the lathe chuck and center ??
When I machined rubber I would just freeze the material. Liquid nitrogen works wonders.
Thank you for watching.
If the diameter is smaller, the diameter will be narrower on the tailstock side.
@@SwaplampJapan Nice job and video Sir.
This channel is AMAZING!
切る感覚なんですね。凄いです！
昔１００角厚み２５のウレタンの中心に７０φの穴を開けたんですが（しゃくったバイトで）液体窒素にぶち込んでから削りました（笑
いつも驚かされます。 どれだけの知識と経験があれば荒削りの方法や、仕上げバイトの形状、きりこの処理のカーブなどがわかるのでしょうか？ 素人の私には アイデアの種にするために まだまだ経験を増やしていかねばと思う次第です。 いつもありがとうございます
この方なら大和砲身も削り出せそう
仕上げバイト君がやってんのスゴすぎるw
職人かよw
@@HIJYOSHOKU
バイトはアルバイトじゃなくて切削工具のことや😭
@@HIJYOSHOKU すき。ふつうバイトなんか知らんよな
We have always ground rubber or other soft materials such as O-rings. Either on a cylindrical grinding machine or with a grinding attachment on a lathe.
旋盤はワシノのLR-55Aですね。
ボルトの加工が良いですね。参考になります。
ワイは旋盤にゴムをチャックして、サンダーで切り飛ばしてましたねぇ！
Nice method. Thanks for sharing it.
As always very well done. Impresive all the time. 👍👍👍👍
Interesting, certainly
I think that high quality serrated knives (those used when eating barbecue) would do well: they come already shrapened and hardened.
Regards.
Amazing . I thought rubber was not machinable .
That was very impressive.
It all depends on the shore hardness of the rubber I used to machine printing rollers the best way was grinding it produces perfect dimensions!!
次回は旋盤で大根のかつらむきを
Lovely video, but I think this is your most rough blades you ever made. I just expect your typical perfection always. :-)
Of course a japanese person makes a blued steel cutting tool for turning softer material.
NRは連続加工してると、CRやNBRに比べると刃がヤラれるの早いんですよね…
10個単位で測って見ると、0.2づつくらい変わってくる。
Good job 👍
That was very educational.I like it.
No UGLY background 'muzick', thank you !
Perfeito, parabéns.
how you drill a hole in this rubberblock?
Thank you for watching.
I had never done deep drilling in rubber before. I will try it next time.
Great thanks
Nice job, my problem will be solved 😁
Well done friend 👍👍👍
ウレタンゴムの加工が来た時、どう削ったらいいのか悩みましたｗ ナイフ的な刃先に辿り着くまで大変でした
Eurethane= 0% rubber
What size is your lathe?
The distance between centers is 550mm.
The model is Washino LR-55A.
@@SwaplampJapan thank you for the information, love your videos 😎
great!!😀
Is there a reason to remove the threads from the bolt? Seems like a waste of time.
低速なら、遠心力による歪みも気にならないか。精密加工は無理そうだけど。
天然ゴムをハイスで削ると、結構摩耗が激しくないですか？
ご視聴いただきありがとうございます。
おっしゃる通り刃先の磨耗が早いように感じます。
ゴムに添加されている炭素の微粒子が原因なのかもしれません。
Φ20など細目のSS丸棒を加工する際
粘っこくてどうも上手く荒加工できないのですが、どういう条件にすればいいのでしょうか。仕上げバイトで仕上げ加工するからいいというのは分かるのですが、せん断型のキリコが出るので良くないと思いながら日々加工研究してます…。工業校生なのでまだまだ知識不足で…。
ご視聴いただきありがとうございます。
恐らく、お使いの荒削りチップのブレーカー形状が原因だと思います。
SS材は粘っこいのでS45Cではき裂形のキリコになるチップでも上手く削れない事があります。
シャープエッジブレーカーにすればいくらかは改善すると思います。
「チップブレーカー ランド」や「チップブレーカー Rホーニング」といったワードで検索すると詳しい説明が見つかると思います。
ご自身で超鋼のロウ付けバイトを研いで使うと非常によくわかると思いますのでそちらもお勧めいたします。
@@SwaplampJapan ご丁寧にありがとうございます。
自分自身まだ2級旋盤しか持ってない
まだまだ素人なので、チップブレーカーの知識も乏しくそこの気付きはありませんでした。粘っこいというのはわかっていたのですが対応までは…。
ろう付けも使ってないものが色々実習場にあるので研いで試してみます。
ありがとうございました。
Hello 職人（上手）, I recommend to facing up the surface before You will begin pre-drilling. I'm still looking for Japanese-English or Japanese-Polish dictionary about technical language.
Вот это с болтом ... ?
Какая мощная идея !
взять и испортить болт!
кругляка не нашлось?
Площадь опоры у кругляка сплошная, а здесь разноуровневая
Интересная работа!
cool
Now I know how to make a tube. But still don't know how to make a bicycle tube.
🤝Как всегда класс👍 можно узнать чем смозиваете режущей инструмент в даном видео центровочное сверло спасибо
左右から加圧して切ったら常圧に戻したとき )( こんな形になるんちゃうん
知らんけど
最初治具作ってたのか…
Did not see that coming
Wow,
90mm -.015 rz1.2
God speed.
💯💯💯💯💯💯💯
👍👍👍
👍
👌
More music please.... 😬
工具手作りしてるのほんと草
alot of woek for a 1 $ dollar purchase
Excellent content - are the cutter HSS that you sharpen yourself I note you use a number of these especially sharpened cutters.