![]() Some machines can easily handle high tapping speeds others cannot,Įspecially when ridged tapping.You have more of a chance at high speed with float tapping,Īs this compensates any alignment problems. Put the full thread feed back to 100% on the way out, so the tap never catches up with the holder.Ĭompression type holders are a pain especially on the bigger taps in blind holes.Īs the taps wear and distance to depth will vary.You will end up deepening the tapped hole and when a new tap is installed it will bottom out as it will travel further.My advice is get rid of this type of holder for production runs in blind holes. When float tapping only use pullout type holders not compression, at a feedrate ofĩ5%on the way in (ipm 5.2), allowing the tap to "float" when reversing this stops snatching. Ģ80rpm = ipm 5.5118 when RIDGED tapping 0.5mm, this stops tap wear. No Matter what speed you end up using ,convert to the exact feed. Just goes to show that no mater how much you dumb up a manual, its never enough. Seems like a simple note in the manual something like "the spindle won't run until its below the rapid plane" would be in order. Not sure why but decided to give it another shot, knees knocking, two hand on the E-stop and braced for impact, 1" above the part it start turning and feeds in, stops and backs out. the spindle isn't turning and its getting really close to the hole E-stop, scratch my head, check the program and it looks good - reread the manual and scratch some more. ![]() Machined the fixture and drilled the holes and here comes the tap. To my surprise the manual was pretty straight forward and it was easy to program. Was building a fixture and decided to give that "rigid tap option" a spin. Having never even been close to VMC before I managed to get it up and going and making chips pretty quickly. We have tried anything in between S3555 and S300, thinking that might help.Speaking of rigid tapping.the first of this year I purchase my first ever CNC mill a Hurco VM-10. The recommended RPM for a Balax M2 is S3555. The speeds and feeds in this code are generic. ![]() So it is not just that individual mill that can't tap. Additionally, most of the parts have M3 STI holes in them that we cut tap. These parts run in multiple locations throughout the shop. Some have may six M3 holes, some may have fifty eight M2 holes and eighteen M2.5 holes. This is a package of parts that gets assembled by our customer. So the breakage is likely related to the tap diameter. As the taps increase in size, the tap breakage is less often. Mostly we cut tap or thread mill on parts for other customers. M2, M2.5, and M3 are the only 3 form taps we are struggling with for this customer. Thanks everyone! A lot of great stuff here! Any help or advise would be appreciated, Thanks Maybe there's something I just don't know about. Maybe there's something simple that I just haven't thought of. And some other off-brand, thick as molasses, tapping compound. We've tried Tap Magic for aluminum - comes in a red/white spray can and is supposed to be cinnamon scented. I'm not a fan of the coolant, but there's no getting away from it. The ADO-TRS is available from diameter 3 mm up to 20 mm, in processing depth. ![]() Its unique R gash geometry enables high thrust resistance and exceptional chip control, which are common challenges of 3-flute drills. The coolant we use is a local brand I think, AFT (Advanced Fluid Technology) 619M2. The ADO-TRS ‘Triple Revolution’ is OSG’s latest drilling innovation for ultra-machining efficiency in a wide range of materials. We have purchased an Emuge Softsynchro high performance tap holder. Probably another 5 or 6 brands that I can't remember. Using appropriate size solid carbide drills - 118° drill tipįormula for determining appropriate drill size for 75% metric threads: Tap O.D. Spotting with a 1/4" x 120° NC spot drill Tapping retract is set at 4, but we've tried both slower and faster Torque specs for the assembly screws are mandated by our customer's customer.Ģ015 Haas VF-4SS. Form taps and thread percentage is mandated by our customer. Trying a drill the next size up drops the thread percentage causing ripped threads at assembly. 5 holes in aluminum with 75% thread percentage. Long time Forum reader, first time poster.
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