I’ll use a 1/2″ depth of cut at full ramp. If we need to go deeper to get down to full cut depth, the ramp will zig zag back and forth. Let’s also set the depth of cut to be the maximum depth of the ramp in one pass. Set up for a full slot cut, because the ramp will be descending into bare metal. Let’s say we’ll be cutting our pocket at a 1/2″ depth. What should my feeds and speeds be on that ramp? You should adjust your feeds and speeds slightly when ramping because its harder than making a level cut.
Mini ramp radius how to#
I’ll show how to use the Ramp Mini-Calc to solve a couple of interesting problems.įirst, let’s say I just plan to ramp down at some “standard” rate, say a 3 degree angle. I want to set up my CAM program to cut a pocket on a part, and I’ve decided my entry to the pocket will be via ramp. I’ve got a 1/2″ 3-flute TiAlN Endmill selected and it’s a serrated “corncob” rougher to boot. If you’ve selected a mill for your machine and ballnose geometry for the cutter, the Surface Finish mini-calc will help you determine stepover for a particular surface finish:įrom the screen shot above you can see I’ve set up an aggressive machining scenario in 6061 aluminum. Mill Surface Finish for Ballnose 3D Contouring Calculator The three Mini-Calc buttons are right under where you specify Tool Diameter and Flutes…įor turning operations, you can pop up a surface finish box to determine feedrates based on desired surface finish given a particular cutter nose radius. The Mini-Calcs are accessed directly under the Tool Definition (where you specify tool diameter, flutes, and so on): – Plunge: Plunge Roughing speeds and feeds
– Ramp: Feeds and Speeds for ramping into a cut – Interpolate: Circular and Helical Interpolation of holes and bosses G-Wizard’s feeds and speeds calculator has a set of functions called “Mini-Calcs” that are little popup feeds and speeds calculators for special situations:
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