![]() ![]() ![]() (Speaking for myself, I’d use a sulfur-based oil or squirt a little tapping wax into the hole.) “I know they say water soluble coolant isn’t recommended for form tapping, but it works for me,” said Fares. He also breaks the rules somewhat by using a water soluble, semisynthetic cutting fluid with a chlorinated lube additive. At 250 rpm, the OSG averages up to 9,000 holes through 1.575" thick material compared with 1,750 holes per tap with “the other brand.” That spindle speed is faster than Fares likes, and he thinks tool life would be even better by slowing things down, but he needs to run at that rpm to keep the spindle from stalling. ![]() He has nothing but good to say about the OSG oil tap, citing another example of a long-running job where he taps M30 holes in A514 grade 50 plate (a high-strength structural steel). He said he tried “every M30 forming tap I could find,” but this was the only one his Hurco VMX-84 50-taper belt-driven vertical machining center could actually turn without stalling the spindle. So when Tom Fares, president of TNT Custom Equipment in Stow, Ohio, called me out on that section of the article, saying that he routinely taps holes in 45 HRC steel alloy and thread mills into “the low 60s,” I listened to what he had to say.įares uses an OSG EXOPRO S-XPF oil tap to form M30 × 3.5 threads in a proprietary alloy similar to 1050 steel but heat-treated to 45 HRC. And if you’re going to try to tap them, be prepared to duck the flying shrapnel when the tap explodes!” In it, I stated, “There’s little chance of successfully thread milling metals much above 45 HRC. I received an email from a reader letting me know that he disagreed with my recent article on tapping versus thread milling. Order by 5pm EST and we will ship out the same day.Published 10:15am Cutting Tool Engineering Magazine Offer only applies to orders shipping within the 48 continental United States and is not valid on previous orders. Please look for this UPS logo on qualifying items. UPS 2nd Day Air Service at UPS ground rate when your entire order only includes USA made cutting tools (end mills, drills, tap & dies, thread mills, burs, reamers). Thread foam, right hand cut, square drive shank.Made from premium high speed steel with ground threads.Tool life 3-4 times or more than cutting taps."Lube Grooves" for lubrication and venting in blind holes.Bottom Style (2 threads tapered) for blind holes.Recommended for a wide variety of ductile materials Advantages include no chips to dispose of, stronger higher quality threads, increased tapping speeds, longer tap life and reduced tap breakage. ![]() Thread forming taps have not flutes or cutting edge so it cold form rather than cut the threads.Material Handling, Lubricant, MRO, SafetyĪluminum, Brass, Copper, Lead, Stainless Steel, Carbon Steel, Leaded Steel and Zinc.Industrial Standard for Layout Fluids Shop Now Impact Wrenches, Ratchets & Nut Runners.Cutters, Shears, Nibblers & Accessories.Bevelers, Planers, Joiners & Accessories.Up to 1" diameter of end mill and drill bit Shop Now Low profile and high grip from Mitee-Bite Sine Plate & Magnetic Chuck Combination.USA Made Solid Carbide End Mill Shop Nowĭouble sided 6 Cutting Edge Insert Shop Now.Combination Drill & Countersinks (Center Drills). ![]()
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |