Jump to content

Welcome to eMastercam

Register now to participate in the forums, access the download area, buy Mastercam training materials, post processors and more. This message will be removed once you have signed in.

Use your display name or email address to sign in:

Invar 36--gravy or nightmare?


Recommended Posts

5 minutes ago, 5th Axis CGI said:

For milling .0015-.003 per tooth and start with 5 flute tools can even go up to 9 flute tools if you need to go real deep with some cuts.

That really depends on tool size...though doesn't it always.

I've had to mill slots with .012" endmills..... 3x's deep.....let's just say we went through A LOT of tools to get that order done....

Saying you need to machine it is just such an open ended question in my experience...

 

Link to comment
Share on other sites
56 minutes ago, JParis said:

That really depends on tool size...though doesn't it always.

I've had to mill slots with .012" endmills..... 3x's deep.....let's just say we went through A LOT of tools to get that order done....

Saying you need to machine it is just such an open ended question in my experience...

 

Yes, but just throwing something out to see what sticks. 😉

  • Like 2
Link to comment
Share on other sites
2 hours ago, jeff said:

Thanks guys, we're going to use Sandvik grade 1105? and start around 175SFPM. 

Oh and these get knurled too. That should be fun.

1105 is their "generic grade". It is going to wear quickly more quickly.

I much prefer their 1125 grade. It is superior for "harder materials", but the 1115 grade is also good.

Entering Angle can be used to help control chip thickness. A 45 degree entering angle, or less, is good if you have the option to specify. If you use a typical CNMG style 80 degree insert with 5 degrees of side clearance, then your entering angle would be 85 degrees. But often based on part geometry, we don't have that luxury.

If you opt to rough with a round insert, you can use the Dynamic Turning path to get better tool life, and faster metal removal. Plus, depending on your settings, you can use the Chip Break function to keep the chips from wrapping on your tool or part/spindle.

  • Like 2
Link to comment
Share on other sites

image.thumb.png.d5ac10ca30d29d9e2af71a030b6c86c1.png

This is a calculation for a CCMT Insert, with .031 Corner Radius.

I was trying to get the SFM below 680, but the calculator was giving me grief.

I would think 200-400 SFM would be a good starting point. You might need to get it up to higher SFM values, in order to get the heat into the chip. You'll also want to be sure you are taking a big enough DOC that you're hitting the chip breaker.

 

  • Like 1
Link to comment
Share on other sites
14 hours ago, Colin Gilchrist said:

1105 is their "generic grade". It is going to wear quickly more quickly.

I much prefer their 1125 grade. It is superior for "harder materials", but the 1115 grade is also good.

 

It could be the 1125 grade, (I'm a mill guy). I was relaying information to our lathe operators.

  • Like 1
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

  • Recently Browsing   0 members

    • No registered users viewing this page.

Join us!

eMastercam - your online source for all things Mastercam.

Together, we are the strongest Mastercam community on the web with over 56,000 members, and our online store offers a wide selection of training materials for all applications and skill levels.

Follow us

×
×
  • Create New...