January 29, 2014, 12:19 am by Eldar Gerfanov (Admin)
HSMAdvisor has got a brand new CAD/CAM integration profiles manager.
It is now possible to import/export profiles to and from HSMAdvisor.
For now i only had time to add SurfCAM 5.2 to the list. MasterCAM x2 is coming a little later.
While using Capture Wizard yields very satisfactory results in most cases, it does not take a long time to set up either. The whole procedure of creating a brand new profile takes just about 30 minutes.
If you created your own profile for a CAM system that is not already in the lest, please send it to my e-mail address: cnc@zero-divide.net or create a thread on the support forums. There you can upload XML files directly.
I would like to add it to the next release for everyone to enjoy.
Very good things happen to those who contribute!
If you need any help figuring out CAD/CAM integration. please refer to "HSMAdvisor Tutorials" category of this site, create a thread on support forums, or send me an email!
January 21, 2014, 12:15 am by Eldar Gerfanov (Admin)
We all love getting positive feedback on anything we do.
For example hearing "good job" from our bosses. Or "nice work" from our co-workers.... Okay, Okay bosses do not normally tell anyone "good job", but anyway that would be nice!
I also like reading e-mails which people all over the world send thanking me for my work on FSWizard and HSMAdvisor calculators. Telling their success stories and suggesting new features.
Most seem very surprised when they send a question on weekend and receive an answer withing a couple of hours.
Often people send pictures of their work and links to their own web sites.
It is nice that more and more professional machinists are using my software, but seeing it help create a work of art is a special feeling.
One of recent customers Daniel Gentile, uses HSMAdvisor to calculate cutting parameters for his custom knife production business.
Here is what he has to say:
Quote:
HSMAdvisor enables me to efficiently do the math that saves me not just a lot of time as I can confidently often use higher speeds but also a lot of money, as I tend to break less of those expensive 2 and 3mm carbide tools that see a lot of use on my folder production. Also because I work with a dozen different materials - from D2 steel to Titanium to Bronze - and a lot of different cutter types and finish requirements it's just nice not to have to work with "guess-work" for the feeds and speeds.
Daniel Gentile, owner of FERRUM D Gentile, custom Knives & forging classes.
October 12, 2013, 11:32 am by Eldar Gerfanov (Admin)
Lately there have been a lot of really interesting HSM topics on PracticalMachinist forums.
In one of them a guy who owns his own resharpening business posted a video of his endmill milling a block of D2 hardened to over 60 RC. The forum topic is located here First try on D2 62Rc(video)
Here is his post so you know what we are talking about:
Quote:
In an effort to perfect our speeds and feeds while hardmilling, this is the first try. Its not right yet, but far from a failure. I apologize for the language at the end, but I do not edit my videos. The endmill was a reground garr VRX at .353 diameter. Parameters were 750 sfm, .018 radial, .300 axial and .004 ipt. The next run will be at 650 sfm, .006 ipt using a mist sprayer. Also, any small areas will be blocked off to be ran at lower speeds to allow cooling time for the cutter. Just a note for anyone using a Mag Fadal, The E-stop button is not quick enough, use feed hold. The endmill was badly worn on the corners, but not broken, and will be resharpened and used again.
In the ensuing discussion i posted my own take on how and why HSM works
Quote:
HSM works in many ways.
1) Reduced cutting time per edge per revolution allows it to cool down more. 2) Chip thinning allows to increase chipload (advancement per tooth per revolution) 3) Increased depth of cut combined with shallow radial positively affects deflection. Tool bends less as it is more rigid towards the tool holder. 4) Higher cutting speed actually reduces cutting forces as heat generated in the cutting zone makes it easier to shear off a layer of metal. Yet because the time of contact is so small, most of the heat is carried away with the chip. 5) Higher RPM also allows to get rid of hot chips faster thus further reducing heat transferred to the tool. 6) Higher feedrate actually reduces relative cutting speed. 7) At high axial engagements more than one flute is in contact with the workpiece at different points along the axis of the tool. This too helps combat vibrations and chatter. 8) You are using more of the tool than just its tip, so technically you can do more work with one tool before it gets dull. 9) lastly it looks cool as hell and is very impressive. Whenever we know visitors or bosses are coming we try to make sure some HSM is going on even if application does not merit that I am not sure if the air that is moved by the endmill is doing much, but i suspect he didn't mean exactly that.
September 23, 2013, 11:07 pm by Eldar Gerfanov (Admin)
I have just uploaded a new release of HSMAdvisor.
I have decided to extend trials every time major releases come out.
This will happen every several months or so.
This release is pretty big. So every one who has not purchased yet gets 30 days more to play with it.
We have material cross-reference tool.
It allows you to quickly figure out material group for a large number of materials. Around 1000 of them. You can access it by pressing "MORE" button next to material drop-down list.
Here is it looks:
Second Big thing is new tool life estimator.
It allows to show you how tool life reacts to changes in speed, feed rate and depth of cut.
It is a percentage based on normal shoulder milling cut that should equal 100%
Nobody else has this feature- it is absolutely unique to HSMAdvisor and that is in part why i decided to extend trials this time.
Besides tool life gage there is a new tab in results area.
It is called Gages.
It shows important information like what percentage of deflection, torque and machine load we are running at the moment.
It helps to figure out at a glance if something is out of whack.
This release features some pretty major updates and features.
First of all, Tool deflection model has been radically improved over previous versions. Now model fully considers not only the flute length, but also depth of cut and how it affects deflection!
No other speed and feed calculator alows you to do that.
Calculator now helps getting full advantage of those Hight Axial engagement toolpaths.
New things
HSMAdvisor can now print! For now you can print a screenshot of application window. Make sure to select "Album" layout in your printer settings, otherwise portion of the window may get cut off. Tool library printing is next in line to be done.
User Library Export and Import in XML format is now available. You can use it to back up your tool library and share library files with others.
Library Tabs are now right-clickable by mouse- this allows to right click on the library tab and select desired action like "Delete" "Merge" and "Rename".
Speeds for some tool and stainless steels have been revised. Couple of materials were added.
Things updated and improved
Improved tool deflection model.
Improved and fixed machine and tool limits trigering.
Creation of new Tool or Cut now forces newly-created tool/cut to get loaded, so you dont have to search it from the drop-down list- it becomes active right away.
Viewing and editing of tool/cut info in myCutDB page now does not close opened tool tree.
Tool material and Work Material are now a single column. Its called Tool&Work Material and it shows tool material for Tool rows and work material for Cut rows
November 23, 2012, 11:25 pm by Eldar Gerfanov (Admin)
Hi-helix end mills have several advantages inherited with their design.
Simple math says that a an endmill with 45 degree helix angle directs 50% of the cutting force downward versus 25% for a 30 degree end mill.
Main advantages are:
Higher rake angle directs more of a cutting force downward. This reduces side load on the cutter, that leads to less deflection and less tendency to chatter.
At high axial engagement (deeper depths of cuts) more flutes remain in the contact with the work piece. This leads to much smoother cut, again reducing tendency of the cutter to chatter.
High helix angle pulls chips upward and away from the cutting zone. This reduces chip re-cutting and helps prevent cutter from getting clogged up. This also allows to take deeper cuts and increases productivity.
Because of higher helix more of flute length is being used in the cut. Better surface finish is achieved even when using the same chip load. Generally an end mill with 45 degree helix can be fed 30% faster than equivalent one with 30 degree helix and still achieve same surface finish.
High helix end mills also have disadvantages that a machinist has to take into consideration:
With more of cutting force directed axially, the load on spindle bearings in downward direction is increased.
Tendency for both the end mill and the work piece to pull out is increased. So a more rigid tool holding and work clamping should be considered.
Higher helix end mills are also less stiff that regular helix end mills. This may cause more deflection and may become a problem when having to machine straight walls. This effect should be mostly diminished by lower side radial load, but it still needs to be considered in some cases.
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