Handmade ceramic cutting insert for lathe machining

[gavinclair2007]

Nice surface finish,chip breaking and cutting speeds. Who uses ceramic on such soft steel anyway?

[zahirani]

@gavinclair2007 this product is a ground up development, so we tested on soft materials first before we go for harder workpiece.

[n1663r]

@zahirani you didn't know ceramic would cut 1018 crs?? I would started the test cutting butter or wax.

[TheBodvarg]

@gavinclair2007

that is not a good surface finish its really really por finish



[gavinclair2007]

@TheBodvarg Ever heard of Sarcasm?

[ROCKNTV1]

not sure by the cam angle but there does not seem to be much relieve on the cutting nose, nice job on the ceramics though, try a more aggressive shape may be

[bbenum2010]

que erreur d'abord le serrage de la pièce et puis lorsque que l'on travail avec de la céramique le métal doit être plus dur que la pastille céramique et le nombre de tour du mandrin doit tournée plus vite et l'etat de surface est orrible.

[TheBodvarg]

thats really really poor surface finish

[par4par72]

All Props for trying! Good Job! But I'm sure it's not easy to make one from scratch.

Don't stop. keep investigating, there is lots to learn. Sorry but for this material the faceting of this tool needs to be much more aggressive....but your not far off. This tools composition must be much stronger. you can tell at the last pass, the tip broke. hence the odd chip. Don't listen to these other Huckleberries. ceramic tooling is optimal on a manual...If you know what your doing! good job!

[m4tty1984]

interesting video.nice to see people experimenting.but on the down side,that didnt look anywhwere near a 4.0mm deep cut???!!!

[zahirani]

@m4tty1984 its actuallt 0.4 mm, its typography error. thanks for pointing it out!!

[Maurice1469]

It may have just been the angle of the camera, but it looked like your tool was obove center of the work piece.

[zahirani]

@Maurice1469 hurm thanks for your input. but before a machining session i would calibrate the tool itself. let me double check. thanks man.

[fall22123]

Comparing your insert to carbide, or even HSS, it wasn't very impressive. Who am I to criticize though, I've never made a ceramic insert.

[zahirani]

@fall22123 it's ok. this product is very early in the development stages. and it was hand made, not produce using machine or any automation like other commercially available cutting insert out there. it still has a long way to go. thanks for the feedback anyway!!

[zahirani]

actually i`m fabricating my own insert for my research project... trying to produce competetive insert and comparable to the inserts from Sandvik Coromant and Iscar...

[baccus61]

@zahirani Maybe if you use it on hardened steel it might perform a little better and not just wipe the steel off the workpiece. That is what ceramics are designed for.

[NarexM]

Put a drop of water on it next time and it will go boom :D

[Emyemgaa]

Why dont you use normal cuting Inserts like Sandvic or Iscar etc..whats the point of these things... I cut the same steel withe 285m/min with an Dcmt Typ cuttingradius 0,8mm and 0,45mm per revulution.... its much faster..

greezs from colongne Germany

[Rigel66]

some chatter goin on there...

[zahirani]

@Rigel66

what chatter

[cumulo25]

@zahirani starting at around 1:23

[HertzCOD4]

@Rigel66

I heard it too near the end. I don't know maybe I'm too aggressive but to me that is slow as hell. Especially for 1018. I realize its a hand made insert but if you even want to come close to Sandvik and Iscar, you will need much better than that. I run my lathe inserts at 1500 SFM for my CNMG's and 1800 for my DNMG's in 1018. That is with Sandvik 4215 grade. Of course you are on a manual so I wouldn't expect you to be that high which leads me to say, keep the ceramics off the manuals.

[zahirani]

@HertzCOD4 thanks for your input. do you have any reading documentation you can share with me? i`m still very green in this field. cheers!

[HertzCOD4]

@zahirani You can obtain information easily by reading the books from Sandvik and Iscar about their grades and cutting conditions. sandvik.coromant.com or iscar.ca

Of course there are others as well like Kennametal and Seco and a few others. Just go to their website and you have a tonne of info to guide you along.