Exploring Gorilla Mill Geometries
End mill geometry is crucial because it directly impacts tool performance, including cutting efficiency, tool life, surface finish, and chip evacuation, which are all essential for producing high-quality parts. Read on to see what sets Gorilla Mill tools apart from the competition.
VARIABLE HELIX
There are a lot of variable helix tools in the market today, but none compare to Gorilla Mill’s patented geometry. We have engineered 4, 5, 6 and 7 flute tools with three different helixes to ensure that no angles ever meet at 90 degrees at any time during the cut. This allows an end user to increase their RPM’s or surface feet per minute, and a longer gauge length on tools to reach into areas that other manufacturers cannot reach without slowing down their process. Our patented variable helix geometry cuts cycle time and increases tool life.
VARIABLE INDEX
Variable Index is achieved when each flute does not sit at 90 degrees from each other. When varying the index, you must align it with the helixes. It is a complex process to engineer 4, 5, 6 and 7 flute tools ensuring they are in the right location. Gorilla Mill has perfected the alignment and location of every flute. This design has given us a 15% or better speed-and-feed advantage against the competition. And, as a result, Gorilla Mill has grown as a company by 15-20% every year for the last 20 years.
No one else on the planet can reduce chatter, vibration and harmonics more than Gorilla Mill. An engineering marvel that only we possess. You know real Secret Squirrel Sh!t!
Eccentric Relief
Gorilla Mill has been grinding an eccentric relief (ER) on its tools since the patents were approved in 2005. The competition has “just” recently launched their ER lines in the past three years, putting Gorilla Mill way ahead of the rest. An important difference between a faceted relief tool and an eccentric relief tool is the primary edge. A faceted relief tool has a primary edge at 15 degrees and secondary edge that lands at 30 degrees. This tool will break down much faster. An eccentric relief tool has a radius that lands at about an 11 degree drop and is simply a MUCH STRONGER cutting surface. It will create 2% more load on an end user’s spindle, but last 3 times longer than the faceted relief. The resulting benefit is an increase of 15% or more to tool life.
Edge Prep – GMP
Lastly, Gorilla Mill has been edge prepping our tools for over 15 years. This process is a very fine art to execute as a manufacturer must maintain .0004 for the whole length of cut on the tool, resulting in a runout of less than .0002. The GMP Edge Prep benefit for end users is a very even cut process. That even tool pressure creates a nice smooth cutting action, enhancing the finish on the tool. End users will hear this action in the machine and on their spindle. As a result, the wear pattern on a tool remains even and is great for re-grinding. For more
