It is no secret that i am trying to make my software fit the broadest possible group of people.
And while my much-respected hobby customers is a big deal for me, industrial machining is where HSMAdvisor really shines.

Recently a PracticalMachinist forum member Atomkinder posted a video of him machining something on his 1997 Fadal VMC.
Here is what he had to say:

Originally Posted by Mtndew

One thing that I just thought of, you may want to look at buying the HSM advisor ($50) for your high speed toolpaths. Doesn't even have to be high speed, but toolpaths with long engagement and small stepover are proven to run a LOT faster than hogging out the conventional way that's been done forever.
Advanced CNC Speed And Feed Calculator - HSMAdvisor

I use it daily, and I can't think of a time it's let me down.
I second HSMAdvisor. I own my own seat (work doesn't have one) because I like it that much.

This isn't particularly special, but it is a 1997 Fadal VMC2216 box way machine. Removed a whole tool and something like 40% of the cycle time from the second operation of this part.

Atomkinder

And here is the link to the video: https://www.youtube.com/watch?v=vHN5z4EKODQ

40% of the cycle time. Aint bad, is it?

In industrial settings, with such great savings HSMAdvisor may very well pay for itself within a day or less!

A couple of days ago I helped a gentleman by answering a few questions about using HSMAdvisor Speed and Feed Calculator to machine a 310 Stainless Steel piece using HSM techniques.

Today he created a post on PracticalMachinist forums walking us through his experience.
And he even took a video of the part being cut!

Endorsements like this is the best thing any software developer can hope for.

I always welcome any feedback regarding my software and never mind helping anyone, whether he is a novice, experienced machinist, my customer or not.

Thank you Sebastien, good luck to you!

There is more than one way to skin a cat! Previously i have showed how to machine multiple pieces out of a flat plate holding only on to 0.010" thick material on the outside of the part. (here) But there is more than one way to do it. Sometimes your part is so hard to hold, that using tabs or skin is the best, or even the only way of machining something. Very often, working in prototyping, I have to make only one single part and designing and producing special fixturing is also not feasible.

Here is how you can easily machine a difficult-to-hold part from both sides without using a separate fixture:

Setup: Put or part in vise. Make sure to square off at least two sides contacting the jaws for accurate positioning and minimum distortion.

Program part normally. Perform as many operations on the first side as possible.

When machining outside profile, machine to the exact depth of your part.

Here is how your part might look after completing the first OP:Read More 

The current "15% Off HSMAdvisor" sale will run until August 4th.

Which here in Ontario is a statutory holiday.

I am not really sure what we are celebrating, but hey, as long as i get paid for staying at home, i don't care.

Just wanted to thank everyone for great support, for investing into YOUR software and for telling your friends and colleagues about it.

I strongly believe our pricing and conditions are VERY competitive and more and more of you agree with me on that every day. I am not even talking about the part that should You need anything improved, fixed or questions answered, i am always available.

I also wanted to let you in in what is coming regarding HSMAdvisor Speed and Feed software.

• The next course of action for me will be adding surface finish calculators to the FSWizard page.
  I have received a few requests for that, and about to start rolling those out.
• I will revisit myCut DB page.
  Tool database will have filters, that would allow users to only see the tools they need.
  You will be able to choose what tool table columns you want to see.
  I will add tool manager window that will allow to quickly show which tools need to be ordered. And create a purchase order right on the spot. Which you would be able to either export to excel, Word or just print out right away.
• I am still bearing the idea of a so-called group knowledge.
  I am not going to discuss what exactly i am thinking about. But this, if implemented would radically improve decision-making when it comes to machining.
  This last part is going to be the hardest one and involve great deal of plain hard work, so i am going to put it on a back-burner for now.

As you see we have lots more to come. And we are not even on to version 1.0 !

And the best part is, if you pitch in now, you will be able to enjoy all the updates and features i am talking about for free!

Take care.

Have a save work week!

HEM is a relatively new term.

It means High Efficiency Milling. It only became available when constant tool engagement toolpahs became almost standard on most of the CAM software.

Unlike HSM that utilizes chip thinning effect, HEM relies on much larger widths of cut and thus chip thinning does not occur. What gives it its name is much higher material removal rate that would normally be possible.

When you are machining a pocket you are most often only milling at about 50% WOC. But nevertheless you need to calculate speeds and feeds based on the fact that the very first move and every corner will be full slotting action. Which means that the whole pocket needs to be machined at lower feedrate.

HEM uses constant engagement toolpths to make sure that this never happens and that Width of Cut remains optimal. Tool never needs to make a full slot so you can ramp up the feedrate as if you were doing outside profiling.

Here is a video of a 1/2" 3 flute endmill machining a 5/8" deep pocket in aluminum at full depth. Normally this pocket would have been machined in 2 steps at 150 inches per minute.

Using Constant Tool Engagement toolpaths we can go full depth at 0.175" stepover and 275 inches per minute.

The advantage of this method is obvious- Higher Productivity.

HEM is not ideal for all cases and each application merits its own method of machining, but its always nice to know more than one way to do your job.

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:

In the ensuing discussion i posted my own take on how and why HSM works

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.

I have been asked to create a tutorial on how to work with the tool library, so here it is.

myCut Tool Database is quite a unique thing.

It not only contains all of your tools, but also each and every tool can have multiple operations or "Cuts" attached to it.

Everything is very simple.

Database contains Libraries

Libraries contain Tools

And Tools contain Cuts

Each entity behaves according to specific rules and "knows" specific kind of data.

Please read more to learn how it all works.Read More