PUMA VTR Series Pumps Up Productivity with 60-Tool Capacity
A while back, we told you about the advantages of the massive PUMA VTR1012F, which we added to our lineup for really big components like jet engines, construction equipment and wind power generation products. But now there is a new chapter in the VTR Series story. Meet the VTR1012FC and the VTR1216FC. These big boys share a lot of the features of the VTR1012F, but add a few new wrinkles that make them even more flexible and productive—especially when you’re working with parts so big, they won’t even fit through the doors of other machine tools. In this article, we’ll highlight the differences in the new versions and then recap some of the common features shared by all three machines.
C is for Capto
The “F” models in the PUMA VTR Series are outstanding machines and are well regarded in the field. But it wasn’t long after their release that we started getting requests for more tools. When our customers talk, we always listen carefully. We responded with two new “C” models incorporating the Capto quick change tooling system made by Sandvik Coromant.
The “C” models have a total tool capacity of 60 (compared to the 24-tool magazine of the VTR1012F) provided by up to two auto Capto heads (30 each of vertical and horizontal). More tools, more productivity. In case you’re wondering, the “F” is for fixed cross rail. More on that later.
The VTR1012F and 1012FC models share dimensions like maximum turning diameter (49.2”) and chuck size (40”), but we super-sized the VTR1216FC up to a 63” maximum turning diameter and a 55” chuck. Any bigger and you’d have to drop in the parts by helicopter.
Cutting Tough. Cutting Long.
All three cats share a common lineage. So, what do they have in common? For one thing, their rigid machine structure, combined with a powerful high torque spindle, provides maximum cutting performance on tough metals like high nickel and cobalt-based heat resistant alloys.
A linear-type automatic tool presetter is the best way to measure and manage the large number of tools that can be stored in these three VTRs. Our competitors usually make this an option; ours comes standard. In addition to tool setting, it monitors worn or broken tools automatically for better tool and spindle utilization. Knowing the condition of your tools means less operator intervention for insert changes as often seen on conventional turret machines with single point turning.
The Z-axis ram is supported by eight points of guide contact so there is absolutely no deflection even at its furthest reach. It is also outfitted with a curvic coupling tool system that provides 24 tons of clamping force.
Purpose-Built for Huge Workpieces
If you want longer tool life when running large diameter parts, you need a lot of rigidity. All three models have it in the form of a rigid box way and a fixed X-axis crossrail. A balanced wide column parked on a one-piece base casting makes these machines three of the toughest vertical turning centers in the industry. Perfect for large diameter power generation components and other super-large pieces that have a lower profile.
The main spindle on the VTR1012FC, which rotates at 600 r/min powered by a 90hp motor that generates over 14,000 ft-lbs of torque, has a twin helical gear design that minimizes backlash. To handle bigger, heavier workpieces, the spindle motor on the VTR1216FC spins at 400 r/min to generate 15,132 ft-lbs of torque.
Yet another design element these three machines share is a moveable enclosure for the machining area that contains chips and coolant, making it easier to maintain a clean work environment.
The cover also opens to allow the loading of heavy workpieces with an overhead crane. These machines have to be large to handle big jobs. But they have been designed so efficiently that there is not a bit of waste in their footprints, not even with the automatic tool magazine.
Finally, an ergonomic controller pendent allows the user to easily adjust the position of the control making part setup safer and more efficient.
There you have it. A trio of PUMAs that can handle the largest components in almost any industry with precision and speed. They’re big. They’re bad. They’re Doosan. Contact us if you’d like to get more details in person.