I recently had to machine an aluminum mold cavity.

7 inches deep. With 5 degree wall draft and a 60 thou radius going all the way down. Roughing was not an issue, but for semi-finishing and finishing i had to manufacture these two extension holders.

Both tools have runout of less than 0.001

The one for bigger 3/8 tapered ballnose cutter is shrink fit- i mounted it using torch.

The smaller tool is a 3/32 tapered ballnose cutter from Harvey Tool.
I could not bore to correct size, and had to ream right on.
The tool is mounted with a set-screw from both sides to prevent deflection caused by unequal clamping pressure.

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New things: None.

Well not really.

First of all alot of small bugs has been fixed.

Second of all i added a neat picture to Drilling operation.

It now shows what each drill specific field means

Also. Unfortunately all current license key holder will have to get new license keys.

If you currently have a license key, please e-mail me your new Computer-ID
And i will send you a new license key.

NOTE:

If you are installing over previous version of HSMAdvisor, you are encouraged to perform complete uninstall of the old version.

Othervise what happens is old settings file is not compatible with the new one.

This will cause Default Tool Type, Tool material and Coating presets to get lost and you end up with a funny looking FSWizard page.

Correcting this is extremely easy:

You need to select some tool type (IE: End Mill), select some Tool Material (IE. HSS) and finally select some Coating (IE. NONE)

This will fix the problem.

Attached below is a screenshot of what it looks like when settings mismatch happens, not a pretty sight i agree, but there is no need to panic.

(Note to self: add version check for every file)

Drilling Settings version mismatch

We have alot of stuff coming.

First of all HSMAdvusor is being particially rebuilt to fix one current issue and provide easier frature implementation in the future. I will try to push update this weekend.

FSWizard:Online has not seen alot of updates in quite some time. A decision has been made to persue mobile web application with bacend running on the server. Currently i am exploring options, modifying mobile version to work with google's jQuery mobile framework to allow seamless deployment across al platforms.

Below is a screenshot of the mobile web app being developed right now.

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An attachment like this is sure to save you some time and money running your lathe unattended

And here is a sketch that i used to make it

drawing Side view Front view

Some time ago an unknown colleague had borrowed an end mill from me.

Have i had been there i would have stressed that it was aluminum specific cutter and that it should not be used on steel.
Unfortunately i was not and it did not occur to him to ask somebody who would have known better.

Next time i look into my drawer i see this.(first picture)

Now we have a tool and cutter grinder to sharpen the OD of an end mill, but chips were so big, i would have to grind off maybe 20 thou of the diameter on order to get rid of them.

Our TC grinder does not allow to re-flute end mills, so i had to do it holding end mill in my hands.

First i picked up correct angle, and then i slide end mill upwards, turning it at the same rate as to follow flutes.

It came out better than i thought.
I was not planing to use it for finishing anyway.

And it lost only 5 thou in diameter after this hack-regrinding.

Before during after

Over the weekend a new feature was added to support forums!

Now registered users can upload multiple (SMALL!!) files.

Please use with caution and dont abuse this feature.

It was done in order to allow people upload their screenshots,pictures and library files.

Make sure you resize and compress large files before posting.

Here is how it looks:

tool Random picture

Things new in this version:

• Added Lead Angle/Taper Angle/Tip Angle switch that allows to specify the angle of the cutting edge.
• Added V-Bit engraving cutters.
• Added wood materials
• Stainless steels from Medium and Easy groups have been revised.

Tool library changes:

• Tools no longer carry any information about material or engagement- all that extra data is now saved with Cuts
• Fixed a small bug with copy/move function.

HSMAdvisor 0.018 is avilable for download.

First of all we have a new feature.
It is Machine Profiles now users can maintain their own machine types.

Inside machine profiles users can specify machine power curve that allows to warn user if power required to make the cut is outside machine power curve.

Because of added new features version 0.018 now requires .NET 4.0 or later

Also several bugs have been fixed:

• Serial Key bug that caused some keys to malfunction and not recornise by the program.
• Comma/Dot decimal point in some locales have been fixed

Sometimes people ask me: "I tried your calculator, and i liked it, but it seems to me a little too aggressive...do you actually do any testing?"

Well, to those I say that not only i do testing, but i run production jobs 100% calculated with my own HSMAdvisor.

Many machinists say that nothing beats an experienced operator holding his hand on feed hold button and playing with speed and feed override trying to find the "sweet spot" where cutting speed and feed rate are maximized and chatter is eliminated or reduced.

And it is correct, but not any machinist is experienced or actually knows what he is doing.
Many machinists also finish their apprenticeship program and never learn a single thing about new tooling types and materials since. They bag years of experience, but their knowledge is stuck on a level it was when they first got their license.

Also not a single person can possibly know cutting conditions for hundreds of materials and remember all of the jobs he had ever ran.

This is where tool database comes in.

Not only can you save tools to cut down and in many cases eliminate entering parameters for every calculation.
But you can (and should) save cutting data for each particular case.

A single tool entry can contain an unlimited number of cuts attached to it, so machinist never has to remember everything.

Here is a i made video of slotting D2 with variable helix hi-performace endmill.

Material: D-2 Tool Steel 200-250 HB
Tool: 0.500in 4FL Carbide TiAlN coated Solid HP End Mill
Speed: 360.0 SFM/ 2751.6 RPM
Feed: 0.0023 ipt/ 0.0094 ipr/ 25.76 ipm

Engagement:  DOC=0.330 in   WOC=0.500 in

Quite often in order to start cutting in x-y direction you need to first plunge into the material.

Here is a compliled list of recommendations for different kinds of plunging that works in most if not all cases.

Plunge with center cutting endmill:

• Regular Chipload/Number of flutes , half the cutting speed. (for 3 flute endmill divide normal chipload by 3)

Ramp:

• Ramp Radius (For Helical ramping): .90-.95 of cutter radius

• Ramp Angle: Indexed/non center cutting endmills: 1-2.5 degree; Center cutting endmills- Up to 45 deg

Ramp chipload ajustment for 4 flute Center cutting endmills:

• 0-2.5deg=100% of normal feedrate
• 2.5-5deg=75% of normal feedrate
• 5-15deg=50% of normal feedrate
• 15-30deg=25% of normal feedrate
• 30-45deg=5% of normal feedrate

Dont forget to reduce cutting speed for ramping above 5deg by half!