Mori Seiki and Delcam: Pinch Milling

This video demonstrates an aluminium propeller blade machined on a Mori Seiki NT4300 using the technique of pinch milling: a method for machining long slender workpieces.
Machining from both sides at the same time causes the radial forces on the part to cancel out, giving a much smoother finish, and allowing for heavier cuts. Creating the toolpaths for 2 different tools simultaneously, one doing a semi-finishing job and the other a finishing job (which can be in full 5-axis), requires powerful CAM software such as Delcam's PowerMILL.

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Category:

Science & Technology

Tags:

• milling
• machining
• manufacturing
• pinch milling
• toolpaths
• smoother
• faster
• heavier
• cuts
• aluminium
• propeller
• blade
• delcam
• powermillmori
• seiki
• high speed

[thegreatga]

@rick371 with a hack saw by hand

[adytohbe2]

Like!

[illinois1984]

wow i dreamed about this

[tillasmax]

Great video keep up the good work.

[5dot7]

Mori Seiki, best machines money can buy, trust me!

[rick371]

i want to know how the end is machined off of these propeller blades to put that nice curve on them

[DelcamAMS]

@caulk04 @AunShovah A good source for more information on this application is an article by Modern Machine Shop. Type "Pinch Milling from Top to Bottom" into Google and the top result should show the relevant article. Not possible to put links into the Comments on YouTube!

[caulk04]

@AunShovah The upper spindle is a dedicated milling spindle that is likely more rigid, that's why it's used for the finishing. The lower 'spindle' looks like a typical lathe turret with a live tool holder installed for this particular application. So it doesn't appear to be a custom suited machine, just an outside the box setup that lends itself to reducing chatter and part deflection.

[AunShovah]

Why does it have two turrets opposite each other? How often would you need to use both? Was it designed solely for machining propellers? What else do you use the opposing turrets for?

Just curious- never seen anything like this

[alvarprocesstech]

If you want someone to polish this propeller blade with CNC or Robotic equipment, contact me .