Tungsten Carbide Drill Bits - tungsten drill

2024-07-31 12:03:24

There are many potential users of a Standard, from someone messing about in their garage, though gauge makers to someone like a UKAS calibration laboratory.

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A gauge even if it could be made to 1nm tolerance would be useless. Using it one single time would put it out of tolerance.

What is the alternative? A Standard for ISO threads for garage tinkerers, another one for those with more exacting requirements and a third one for UKAS?

Drilldown

All the information needed is in Machinery's Handbook. The theoretical depth of the full triangle (H) for a given pitch (P) is:

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I've got a set of Zeus tables but haven't used them in over 40 years because they don't explain where their numbers come from, or why, so I don't trust them.

The OP asked how it can be calculated well one way is to draw it out in CAD. Here I have shown a series of three 1mm edge length triangles at a 1mm pitch which gives the correct flank positions that would be what a thread wire would measure against. I have then drawn in the root radius and also the flat to the crest.

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Drill inslang

No idea. The ISO standard doesn't distinguish between internal and external thread depths. Clearance is achieved by a tolerance class which specifies the amount above, or below, a reference line for the internal and external threads. The thread depth is the same for internal and external, simply moved up, or down, a bit.

To ensure uniform and efficient removal of the filter cake, each system undergoes a rigorous test protocol resulting in a fit-for-purpose RDF and breaker system.

Figure scan easily be checked for correct depth as Major dia less Minor Diameter is 4.773mm and half that is 0.6135. Click image to enlarge.

I have an early version of the Machinist hand book. Printed before Metric was common over here. Many thread charts, much Google. Zeus Book is rare over here, never seen one.

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The rule for drilling a hole for metric tapping is the diameter of the thread minus the pitch. So the tapping size for your 14×1 thread would be Ø13mm. This means the depth of the thread is about half the pitch or about 0.5mm.. Cut a little less than this depth then start the cut until fit process. Take into account the amount undersize you have turned your material down in the first place. Unless you have a perfectly formed point on your tool made to suit the pitch you are cutting you will always have to adjust the depth of your cutting process.

What's the smallest technology being made at the moment? I think it's transistors, the smallest of which at the moment are about 70 silicon atoms across, roughly 14 nanometres, but research is pushing hard to make them smaller.

Customized Teros low ECD synthetic-based fluid system used to drill a 4-mile lateral in the DJ Basin with ROP of 3,269ft/day

If the Standard is to cater for all of them, it needs to be written in that way. You can ignore figures that are beyond your required precision, but you cannot just assume figures if the stated precision is not enough.

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Drillinto meaning

A greater focus on open-hole completions has seen a significant push towards the use of specialized, minimally damaging reservoir drill-in fluids (RDF).

But a designer/engineer/fabricator/machinist/inspector has to pick an appropriate measurement between holding up their hands and saying make it this big, or millionths of a millimetre

Electronics are easier to miniaturise than mechanical mechanisms, but considerable progress has been made with them too. […]

Drill insynonym

ORCA uniform breaker technology is a highly effective, single treatment filter cake cleanup solution available in formulations for oil-based and water-based drill-in fluid filter cakes.

Although the OD less pitch is a good way to work out a tapping drill size I don't think it gives a fell depth of thread, more like about 80% which is why the 0.45 to 0.5mm figures in the last two posts don't match the thread data that I posted a link to which can also be found in Zeuz book and all over the net..

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Adding a line across the tangent points of the tangent points of teh root radius you can measure the siz eyou give that matches the "flat" profile that Machinery's shows and the deeper cut needed for a fully radiused tool, which brings us back to mine and Pete's original comment that it depends on your tool.

A gauge even if it could be made to 1nm tolerance would be useless. Using it one single time would put it out of tolerance.

If you are cutting a male 14 x 1, the OD will be a little less, say 13.9 mm, with the thread depth being 0.5 mm, making allowance for slight truncation of, say, 0.05 mm, So having made contact, the final cut would be taken to bring the total infeed to 0.45 mm.

Drill inexamples

Or are you quoting for a female thread and Op is cutting an external one? Zeuz does give 0.541mm as depth of Female thread.

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So looks like if using a full form external insert for 1mm pitch metric thread and nominal major diameter ( I don't reduce the stock dia) then you need to feed in 0.613mm, partial form or hand ground will differ.

As A final check of my drawing I added a circle to represent a thread wire, only measured to ctr line of a nominal 10mm dia bolt and got half what the thread wire distance is eg 0.313mm over nominal.

How deep you cut depends on what cutting tool you are using. If you're using a pointed 60-degree bit you need to cut deeper from touching-off than if you have a nose flat/radius.

Home › Forums › General Questions › Metric thread dimension wanted. This topic has 22 replies, 11 voices, and was last updated 1 August 2021 at 21:21 by Michael Gilligan. Viewing 23 posts - 1 through 23 (of 23 total) Author Posts 30 July 2021 at 19:35 #556456 mark costello 1Participant @markcostello1 I needed to make a somewhat standard Metric thread for a electric motor brush holder. It is 14mm x 1.0. I made the OD 14mm minus a little clearance and made the thread depth less than 25 tpi, which is bigger. Then it was cut until it fit. There is no data available in Imperial measurements I can find. How would this be calculated? I have an idea but would like to hear it from the Gents here as sometimes I introduce a wild rabbit to chase. Comments or advise appreciated. Advert 30 July 2021 at 19:35 #28285 mark costello 1Participant @markcostello1 30 July 2021 at 19:56 #556457 Anonymous Posted by mark costello 1 on 30/07/2021 19:35:21:

If you look at the first page of this PDF you will see that for 1mm pitch the height of the thread h3 is 0.613mm but that is with the correct radius. If using a pointed tool then you will have to add H/6 to that

Err, there won't be, it's a metric thread. It's seem so obvious that this must be a trick question – I'd look up the thread depth in metric and divide by 25.4 to get imperial?

Engineered CleanDrill RDF system deals with a high risk of H2S, fluid losses and wellbore stability issues for successful reservoir drill-in.

I needed to make a somewhat standard Metric thread for a electric motor brush holder. It is 14mm x 1.0. I made the OD 14mm minus a little clearance and made the thread depth less than 25 tpi, which is bigger. Then it was cut until it fit. There is no data available in Imperial measurements I can find. How would this be calculated? I have an idea but would like to hear it from the Gents here as sometimes I introduce a wild rabbit to chase. Comments or advise appreciated.

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Using our NewBridge™ software as part of the RDF design process, we design the particle size distribution of the bridging additives to match the pore size distribution of the reservoir and to mitigate lost circulation in highly fractured formations.

Drill inspanish

Electronics are easier to miniaturise than mechanical mechanisms, but considerable progress has been made with them too. A major problem with mechanics is scaling nature – as model engineers know, you can't just scale everything by the same factor and expect it to work! Nonetheless, though of limited functionality, Nanobots are down to about 100nm in diameter. They're not made on a lathe or measured with micrometers and slip gauges!

With the Metric thread form being 60 degrees, the rule is that the Tapping size should be (Nominal – pitch ). so for a 14 x 1 Tapping as, Martin said, the tapping size will be 13 mm.

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The Newpark family of RDFs are optimized to each individual application for maximum reservoir productivity while minimizing damage. They are ideal for all open-hole completion designs as the RDFs maximize reservoir production and injection, reduce potential for formation damage, minimize drilling and completion costs, and tackle various drilling and completion challenges.

A lot will depend on the shape of your tool, if just a ground 60deg V tool then you will have to go in deeper than one with the correct nose radius.

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Drill indefinition

For CleanDrill RDF and CleanDrill HD RDF cleanup applications, ORCA for WBM employs an “in‑situ” organic acid generating package to dissolve acid soluble materials such as calcium carbonate present in the filter cake. This tailored and optimized acid generating package greatly improves acid placement in order to uniformly dissolve carbonate in the mud cake across the wellbore face. This uniform placement results in excellent zonal coverage across long open hole horizontal or directional sections.

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Drill inmeaning

Not quite answering your ‘smallest technology’ question, Dave … but I think ‘mechanical engineers’ should be impressed by this little gadget: **LINK**

Our flexible and minimally damaging CleanDrill™ monovalent brine‑based reservoir drill-in fluid (RDF) delivers high-performance in a wide variety of operations. With easy filter cake clean-up and low drawdown pressures.

What did you do Today 2024 Subscription via pocketmags What is (Traditional) Model Engineering? Traction Engine Identification Help Please…. FreeCAD version 1.0 released A blast from the past Creworks Lathes on Amazon UK – some big price drops for Black Friday Week Choosing a suitable fine point capacitive phone stylus Co-ordinate positioning for circle of holes (not all equally spaced) Bronze

Here are the tables needed for doing this. They show that for a pointed tool you need a depth of H x 7/8 and for a truncated tool with a point width of P/4 the depth of cut is H x 5/8. This latter one would probably bind and is the absolute minimum. Note on the diagram where the "Axis of the screw thread" label is. It shows which is internal thread form and which is external thread form. The profile of a home ground tool would be an unknown factor and is more likely to be a rounded form than a really sharp point since a sharp point will soon wear away. It is this unknown that results in the need to cut and test as you progress.

You might want to ask Ketan to sell you a "Metric Revision" Zeuz book as it has a similar diagram to my earlier link which shows all the details that the older books lack including depth of external thread as 17/32H which happens to equal 0.613mm That's for a tool with a rounded nose much like a full form insert and insert makers charts also show depth of 0.613mm for 1mm pitch.

It is then just a case to measure how deep the root is from the OD and I get 0.614mm which is probably rounding up a bit somewhere from the published 0.613mm. I have also shown the dimension you would need to go in if the tool were pointed this being 0.758mm. So depending on your tool geometry you will need to feed in somewhere between 0.613 to 0.758mm from nominal 6mm dia.

Not sure what you mean by no data avilable in imperial measurements. Metric threads are specified in metric units if you have inch dials just divide any mm measurements by 25.4 for dimensions in inch.

Found the Presto Counselor and Down loaded it. MaryLand Metric used to be My go to source but the Company went bust and several places publish the charts and caution is advised.

A gauge even if it could be made to 1nm tolerance would be useless. Using it one single time would put it out of tolerance.

Which is why the metre is defined in terms of wavelengths of light, not a physical lump of metal. Turns out copies of the last batch of physical metre standards are all measurably different now they've aged, and they are all changing size at different rates.

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