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By Yosiu

March 11, 2018, 11:44 pm

Material hardness vs cutting parameters

Hi Eldar,
We have to machine 4340 but hardened to 42Rc. How should i alter the parameters recieved from hsm advisor? Is there any general formula?

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Eldar Gerfanov

March 17, 2018, 9:47 am

Hi,

Sorry for delay. Somehow totally missed the email notificatuion.
For specific hardened steels, that are not in the list, i suggest using a H13 hardened steel material type with comparable hardness.

Regards.

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Gmack

June 7, 2019, 3:48 pm

The unit power that HSMAdivsor uses for endmilling 6061 T6 aluminum is about twice that used by both the Kennametalhttps://www.kennametal.com/en/resources/engineering-calculators/end-milling-calculators/force-torque-and-power.html and GWizard calcultors. Why?

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Eldar Gerfanov

June 8, 2019, 11:58 am
Updated by: Eldar GerfanovAugust 23, 2019, 6:05 am

Quote:"GMACK"
The unit power that HSMAdivsor uses for endmilling 6061 T6 aluminum is about twice that used by both the Kennametalhttps://www.kennametal.com/en/resources/engineering-calculators/end-milling-calculators/force-torque-and-power.html and GWizard calcultors. Why?


Hi,

I fail to see where on that page kennametal is suggesting the power unit for anuminum?

Any way based on my own testing and the documentation avaialble (most sources recomment Pc at about 0.3 for aluminum alloys) i conclude that power requirements suggested by HSMAdvisor are in fact correct.
See the screenshots.

So until i see any evidence to the contrary, it is not going to change:)

Can not speak for Gwizard.


Edit: just found that thses forums are throwing error after posting a comment... fixed!
Edit Edit: Nex time please create a new thread: we do not want to spam the original poser with automated messages that do not relate to his original question.

Capture_machPower.PNG Capture_machPower.PNG Capture_MachPower2.PNG Capture_MachPower2.PNG
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Gmack

June 9, 2019, 1:15 pm

Sorry for posting here - it seemed like the most appropriate place since I couldn't figure out how to create a new thread. How do I do that?
As shown below, HSMAdvisor predicts more than twice as much power is required to endmill slots in 6061 T6 aluminum under identicfal conditions.
User Posted Image

Al Unit Power.jpg Al Unit Power.jpg
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Eldar Gerfanov

June 12, 2019, 2:34 pm

Quote:"GMACK"
Sorry for posting here - it seemed like the most appropriate place since I couldn't figure out how to create a new thread. How do I do that?
As shown below, HSMAdvisor predicts more than twice as much power is required to endmill slots in 6061 T6 aluminum under identicfal conditions.


On top of each forum there is an "add article" button.

But I do not know where kennametal got their numbers. Is it the machinability rating they use?

I guess you would need to ask Kennametal about that. I showed you my sources:)

Cheers!

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Gmack

June 12, 2019, 5:32 pm

Kennametal uses 0.29 HP/(cuin/min) for 2024 Aluminum and 0.2 HP/(cuin/min) for 6061 T6. HSMAdvisor uses 0.29 HP/(cu.in.)/min. in the turning calculator and 0.44 HP/(cu.in./min) in the endmilling calculator!
User Posted Image

Kennametal Unit Powers.jpg Kennametal Unit Powers.jpg
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Eldar Gerfanov

June 15, 2019, 10:40 pm

Hi,

After some research modifications were made to the engine that calculates power AND Aluminum materials got power requirements reduced. So in total Aluminums lost about a third of the Pk value.

Please download and install the update.

Thank you very much for your feedback and patience!


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Gmack

June 17, 2019, 11:46 am

Quote:"ELDAR GERFANOV"
Hi,

After some research modifications were made to the engine that calculates power AND Aluminum materials got power requirements reduced. So in total Aluminums lost about a third of the Pk value.

Please download and install the update.

Thank you very much for your feedback and patience!




Thank you!

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