Loading the player ...
Share
Related Suppliers
Helically Interpolating a Hole at 225 IPM Through a Milled Slot
with Toroid End Mill and RHINO-CARB™ Inserts from Dapra
This video demonstrates Dapra's 1" Toroid End Mill executing the helical interpolation of a 1.75" diameter hole to a depth of 1.25". The material is H13, and the machine tool used is a Fadal 4020 with a 40-taper spindle.
Hole making with helical interpolation provides fast metal removal without significant spindle load or stress on the machine tool. It also allows for hole making to begin on a less than ideal surface, as the video demonstrates. In this case, the top 1/2" of the hole is made through an existing slot, a function not possible with a drill. Additionally, helical interpolation allows many hole sizes to be achieved with one tool, also not possible with a drill.
The parameters for this video are:
Helixing Steel - 225 IPM
1" Toroid End Mill (2 Flute)
1018 Low-carbon Steel
1200 SFM (4600 RPM)
.025" IPT (225 IPM)
.030" Helix
1.75" Hole Diameter
1.25" Total Depth
40 Taper VMC
For more cutting demonstrations, please visit Dapra’s Tool Demo Site (http://www.dapra.com/tech/videos.htm)
RELATED CONTENT
-
The Challenges of Machining Glass-Filled Plastics
Plastics reinforced with glass present more machining variables to manage than conventional metals. This shop has developed a process to overcome those challenges and has become more adroit at short-run work along the way.
-
Taking The Fear Out Of Hard Turning
To make the transition to hard turning, you'll need to switch from carbide to CBN inserts, but that is easier (and more economical) than you might think. It's making the jump to much higher surface speeds that might scare you off. It needn't. Here's why.
-
Drill And Bore With A Face Mill
Cutting holes by interpolating a face milling cutter may be a better process choice for many rough and even finish boring operations. Software improvements and better cutter designs allow expanding use of the versatile face mill for hole making.