Thread: How to use a Chamfer cutter

I run my CTC 45 deg cutter any thing up around 1300rpm, it only has 2 inserts so it makes quick work of your job. I get lazy sometimes and don't change the speed and just run it at 400 rpm what the end mill speed was that I just pulled out. but I have to feed it a lot slower to get a good finish.

Dave

Thanks Dave

Seems the speed is not critical, what DOC did you use

Dennis

I have only cut around 3 x 3mm off the edges as that as much as I have ever needed, and it takes that off in one go. It would easy do 5mm because it's only cutting half of the steel a end mill would.
I find it doesn't shake the machine around and all you here is it cutting.

Dave

I chassed up a picture from a few years back of what the CTC 45 degree tool can do. I ended up knocking the sharp points off the corners as well after the photo was taken, as it was a special job for my grandfather.

Dave

Dave, I dream of cuts like that with the 45 degree! I have one of those CTC indexable 45 deg cutters. I also have an indexable 45 from Shars. When I used the one from the Shars on Aluminum it beat the hell out of my machine and have not used it since. Vibration, cuts with a "crash" and this is at lowish depth (1 to 2mm). It might be related to my machines "other issues" (gear issues mentioned in another thread). I will give the CTC one a try and see how I go.

Originally Posted by variant22

Dave, I dream of cuts like that with the 45 degree! I have one of those CTC indexable 45 deg cutters. I also have an indexable 45 from Shars. When I used the one from the Shars on Aluminum it beat the hell out of my machine and have not used it since. Vibration, cuts with a "crash" and this is at lowish depth (1 to 2mm). It might be related to my machines "other issues" (gear issues mentioned in another thread). I will give the CTC one a try and see how I go.

When you are talking of a 45 degree cutter are you talking about a 45 degree chamfer cutter or a 45 degree face mill.

No matter what type of tool you presently have when cutting the ali there really shouldn't of been any vibration or shaking etc of your machine.

When machining the Ali are you using tips suitable for Ali or just the tips that may of been supplied with the tool.

Even though Dave has a multi toothed cutter don't shy away from the single insert type they perform just as well.

In regards to depth of cut generally 1/2 to 2/3rds the width of the cutting edge would be max.

The rigidity of the machine plays probably the most important part here along with HP and the work holding method, don't forget that any information supplied on insert boxes or suppliers/manufactures web sites is intended for Industrial use,and does not relate very well to home use.

I have had these results from day one with no problems with it. How fast are you spinning it? The slower you go it seems to make more noise. I should have added above if I am doing 3mm cuts in steel for any length I will adjust the speed up, it's only if I need to knock the corners off 25mm or so I leave it in a lower speed where it's set at the time.

Your chip load could be too high as well with feeding it to fast, not sure if you have power feed but I just use that and let it go on it's own. I use the indexable end mill on edges as well and it only has 2 carbides in it and no problems there either. The machine I have is a HM52, but I have gone right through it modding some things and cleaned I it all up. It works much better now than it ever did, but a long way from perfect.

Dave

Originally Posted by denncarm

Hi All

I want to cut a 6mm chamfer on a bit of cast iron and decided to try out the H&F Chamfer Cutter (M501). It uses a single TPMR160308 insert.

I just spent 30 minutes trying to Google what people are using for speed and depth of cut with no luck.

The inserts will probably have a SFM on them but since this is a very interrupted cut I don't think this will apply.

At 120m/min it's gives a speed of 1900 rpm on a 20mm diameter cutter.
Guess your using the uncoated inserts.

Thanks for all the help.

The cutter arrived today and of course I just had to give it a go and it worked perfectly. I will post a picture later on.

Ended up using about 1700 RPM, first cut was 3mm and then another 2mm, no problems at all.

Thanks everybody