![]() Holes, taps with tapered chamfers are able to operate faster than taps with bottoming chamfers. Speeds must be reduced as length of hole increases. The optimum speed for tapping is highest speed that conditions permit, consistent with acceptable tool life. Proper tapping speeds are very important in obtaining efficient tapping results. Cutting taper threads (50% Normal Speed).Bottom lead or Spiral flute taps are used.Lubricant is Poor, or Flow is Restricted.RPM = Feed Speed (SFM) / 0.26 x Tap's Outer Dimension Tapping speeds should be " DECREASED" if Tapping Speed can be calculated using: (Use Table below) Check hardness of material, especially when changing batches of material.Keeping taps sharp, check tap for wear.Use the correct Tapping Drill Size and Type of Tap.Choose the correct lubricant (Ultra S/P™ Super Premium).Use a pitch controlled tapping attachment.To minimize tapping issues the following rules should be followed: Also on your Haas control, one of settings is the rigid tap reversal speed.I believe you can up that quite a bit to cut cycle time if you stick to rigid tapping.Ĭheck the speed and feed recommendations from PTD (I recall they published the most info of the drill mfgs).I think you might be a bit fast.America´s Finest High–Speed Cutting Tools™ How to Tap Effectively and Optimize Tool Life You may want consider a Tapmatic tapping head if there are a bunch of holes in one part.thay are way faster than rigid tapping as you do not have the spindle decell, reversal and accell, and some can reverse at greater than spindle speed. Frank has T/C holders with an ER collet, but I would probably go with a Bilz style.you can change a tap in about two seconds. I presume you are running coolant on the drill cycle?ĭid you go with a tension / compression holder? I have to believe that they will increase tap life.take a look at the Tapmatic site in regards to rigid tapping and tap life. ![]() You are also running at about 95 sfm - I would probably run that at about 60 sfm on a cobalt drill and probably throw in a peck or two to insure that you are clearing the chips. I would guess the drill is packing with chips or just plain overloaded.10 in/min on a #16 (0.177") is really aggressive - 0.0049"/rev. I'd spot drill to get a starting point and your chamfer all in one, just match your drill point and spot drill angle if possilble to keep your drill life up. If you haven't got any of Frank's tool holders, you're spending too much money for what you're getting.his drill chucks are as good as any high dollar unit, and for a Cat40, they're almost free. Get a couple of Drill Chucks from Frank Mari (Maritool), bottom out your drill in the chuck, and you should be able to change out a drill in a couple of seconds and not reset your tool length. ![]() As I recall, you can change a value on your "settings" page and change the tap reversal speed very finitely want to do this. Maybe even consider a Tapmatic as you can tap faster with no spindle reversal and the tooling block I believe is readily available for Haas machines.although a VF3-SS machine should rigid tap really well, vs lets say a gear box model. I'd consider going to a tension/compression style as you should get better tap life (at least according to Tapmatic), as long as thread depth is not super critical. I'd go with a Bilz style tap holder for quick change out - you will not have to reset your tool length every time you change your tap - as long as you are using the same brand of tap. ![]() As I recall, 20 sfm is the recommended speed, but you may be able to bump it a bit and still get good tap life. You should be able to get away with a good coolant at a stronger concentration (maybe ~12%?), and not have any contamination issues, but see what your tap supplier has to say. We use Castrol Moly Dee instead of coolant, but with that many holes, and possible contamination issues, I'd talk to their tech service and see if they can recommend a coolant. Chazsani, We've had really good luck with #10-24 Balax Threadfloers (thread formers) in 316ss. ![]()
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