layout of insert for tool holder design

[Hoppymotorhead]

We are making a machine to face the end of pipe. There will be four toolholders mounted on one faceplate. This faceplate will be plunged into the end of the pipe and then cut the profile into its end.

Is there any references that I can look up that can describe the angles of the insert to the work surface for insert life, ease of machining, plus good surface quality?

 

[BobM3]

As a start take a look at the angles of standard ground toolbits and carbide inserts. For the inserts you lake at, make sure they are designed for toolholders that have zero rake angles.

http://www.MSCdirect.com

or

http://www.carbidedepot.com

or

http://www.valenite.com

would be several places you could find info on inserts and ground steel tool bits.

 

[ornerynorsk]

The manufacturers of the insert can not only tell you the geometry of the insert pockets and seats, they can assist you with choosing the correct insert for the job. Go straight to the source, don't mess around with anyone in sales or distribution.

 

[Hoppymotorhead]

Thanks for your input. I have spoken to Kennametal where they said that they have no input for me nor do they have pdf's or whitepapers. I thought that was unusual.

Machinery's handbook has a wealth of info, yet not complete.

When do you put your tool above or below the center line of the piece you are machining is another question.

 

[hydtools]

Kennameetal has a wealth of information, e.g.:

http://www.kennametal.com/en-US/customer_support/metalworking/tech_tips/turning_tech_tips.jhtml

Ted

 

[BillPSU]

Kennametal and other carbide companies sell cartridges which can be mounted to your cutter body. They offer these cartridges utilizing many different rake angles. They can ussually be changed between different cartrigdes allowing the end user to experiment with what is best for the application.

From your brief description I would recommend you use either a zero rake or a positive rake tool because you are plunge cutting versus facing and turning.

Utilizing cartridges allows you to replace cutting tools when damage has destroyed the insert pocket or the clamping device simply wears out. Cartridges also have pusher screws for adjusting the cartrige positions allowing easy adjustment for size or length.

Bill

 

[Hoppymotorhead]

Those are good suggestions. I am meeting with vendors to see what capabilities they have and the insert styles that are offered.

We dont want to use what was done before without understanding why. Already, I can see some compromises being necessary due to the depths needed to make the profiles on the end of the pipe.