Lathe speeds and feeds calculator

[vw_chuck]

Anyone have any links to a good speeds and feeds calculator for lathe work?
Thanks

[tblough]

http://hsmadvisor.com/

[vw_chuck]

It seems my 1 hp lathe is actually only putting out .75 hp based on the speed and feed that locked it up.
Any idea how much negative rate tooling is adding to the HP equation?

[tblough]

I only use positive rake tooling on my Hardinge. It's more expensive, but the lower Hp, less deflection in the smaller parts I work on, and better surface finishes are worth it to me.

[Muzzer]

Also quite a few free apps if you have a smart phone. For instance, the Sandvik app includes calculators for turning, milling, tapping and drilling. Handy if you can't be bothered to flash up a PC to run FSwizard.

https://www.sandvik.coromant.com/en-gb/ ... -apps.aspx

[tblough]

Actually, FSWizard is the phone app based on HSM Advisor. I bought the Lifetime Permanent License for HSM Advisor which includes the mobile FSWizard app.

[Muzzer]

So Sandvik would save chuck the cost of a lifetime subscription to FSwizard.

Even better, if using Fusion 360, you only need to know the recommended feed per tooth and the surface speed which you can get from the tool manufacturer. Fusion does the rest and you can save those settings with your tools as you set them up in the tool table. You may find you can't achieve the recommended surface speed so have to turn that down but you can keep the feed per tooth.

I haven't used a F&S calculator for years since using Fusion. The only feature I have used occasionally is an estimation of the spindle power, which some calculators provide. Fusion doesn't do that although I did suggest it on their forum. I like to think I'm getting close to using the available spindle power, or at least have an idea how much margin I have. Without that info, how do you know if you are anywhere close to fully utilising your machine?

[Dave_C]

if using Fusion 360, you only need to know the recommended feed per tooth and the surface speed which you can get from the tool manufacturer. Fusion does the rest and you can save those settings with your tools as you set them up in the tool table. You may find you can't achieve the recommended surface speed so have to turn that down but you can keep the feed per tooth.

Yup, works like a charm! Feed per tooth will keep you out of trouble and you won't have to cacl feed rates at all.

It's all I use to set my feeds,

Dave C.

[vw_chuck]

I am using a lathe here but I am guessing Fusion can also do it for a lathe?? Anyone using fusion to do feeds and speeds on a lathe?

[Muzzer]

I don't use Fusion for lathe (yet!) but the tool library also includes the same types of feed per rev etc, so yes, you can use it for turning.

For turning data, look up (Google) the manufacturer's part number for the inserts. Usually they tell you the depth of cut and surface speed on the datasheet. For my machine, I usually have to use the lower end of the range, as they are usually capable of much more work than it will allow.