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Phone: 203-753-5121
Fax: 203-755-9011
Toll-free: 800-992-3233

Email us:
sales@danco-inc.com


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High Quality Threadmills, Contour Tools and Form Tools
Whether you choose thread mills to reduce the headaches of threading, a center, form tools to make a custom contour, or a completely custom tool to cut an odd shape or multiple bores at once, Schmarje stands ready to deliver the quality you need. Likewise, if your need is for machining service, Schmarjes' contract machining department has years of meeting needs like yours.

Thread Mills without coolant
Need a special quote on Threadmills? Click here!

Thread mills solve many problems with threaded holes. You can:

  • save money over the price of larger taps.
  • cut threads of the same pitch in any size hole (minimum and above) with one thread mill.
  • cut multiple lead threads with the same tool that cuts normal threads.
  • increase threading speed.
  • reduce the horsepower required vs tapping.
  • cut threads in hardened materials.
  • cut threads in super alloys.
  • prevent broken taps from jamming the hole.
  • control the pitch diameter of the threads.
  • produce superior thread quality.
  • control the center location more accurately.
  • thread to the bottom of a blind hole with no lead angle.

 


Special sizes and pitches are readily available.Most coatings are available, with selected models stocked TiN coated.Schmarje uses only Super Sub-micron Grain Carbide and guarantee the concentricity of the tools they make.

Thread Mills with through coolant
Need a special quote on Threadmills? Click here!

Thread mills solve many problems with threaded holes. You can:

  • save money over the price of larger taps.
  • cut threads of the same pitch in any size hole (minimum and above) with one thread mill.
  • cut multiple lead threads with the same tool that cuts normal threads.
  • increase threading speed.
  • reduce the horsepower required vs tapping.
  • cut threads in hardened materials.
  • cut threads in super alloys.
  • prevent broken taps from jamming the hole.
  • control the pitch diameter of the threads.
  • produce superior thread quality.
  • control the center location more accurately.
  • thread to the bottom of a blind hole with no lead angle

Special sizes and pitches are readily available.Most coatings are available, with selected models stocked TiN coated.Schmarje uses only Super Sub-micron Grain Carbide and guarantee the concentricity of the tools they make.
Material Surface
Feet per
Minute
(SFM)
Cutter Diameter (inches)
.250-.350 0.500 0.750 1.000 2.000
Feeds (Inches per Tooth)
Aluminum and Magnesium 800-UP .002-.004 .003-.006 .004-.008 .006-.009 .007-.010
Brass 500-600 .002-.003 .003-.005 .004-.008 .005-.009 .007-.010
Bronze 400-600 .002-.003 .003-.005 .005-.007 .005-.008 .006-.009
Hard Bronze 220-280 .001-.002 .002-.003 .004-.006 .004-.007 .005-.008
Cast Iron - Soft 200-280 .001-.002 .002-.004 .003-.005 .004-.007 .005-.008
Cast Iron - Hard 180-250 .001-.002 .002-.003 .003-.004 .004-.005 .005-.006
Steel - Soft 230-400 .002-.003 .002-.004 .005-.005 .003-.006 .004-.007
Steel - Medium 200-350 .001-.003 .001-.003 .002-.004 .003-.005 .004-.007
Steel - Hard 120-220 .001-.002 .001-.003 .002-.004 .002-.004 .002-.005
Stainless Steel 120-220 .001-.002 .001-.003 .002-.004 .002-.004 .002-.005

Thread Milling Formulas

Need a special quote on Threadmills? Click here!

Programmed Diameter Feed Rate O/D    (Back to formula list)

When thread milling, your linear feed must be converted to circular feed


Programmed Diameter Feed Rate I/D     (Back to formula list)

When thread milling, your linear feed must be converted to circular feed


 (Back to formula list)



Illustration: Ramping In 90 Degrees for Thread Milling


 (Back to formula list)

Illustration: Ramping In 180 Degrees for Thread Milling



Testimonials

We have used your product several times in the past and were always satisfied with the generated thread.

In one case we cut almost 600 5/8" threads in a 4" grid with a 1.5" thread length into a steel tooling plate.  Even though we initially generated a wrong program, spiraling the entire thread length downward, we used only one tool for the entire job.

In another case we cut metric threads M30x1.5 into a flat bottom hole into copper plate.  The tolerance was very tight and we had to cut the thread almost to the bottom.  The fact that we used a threadmill allowed us to cut the thread very fast while being able to reach exactly the required class of fit.  This thread would have been very difficult to machine using any other method known to us.  We ran a spindle speed of 2000 rpm and a feed rate of 10" (to be on the safe side).

Both jobs were performed on high speed milling machines, with limited torque available.  Using threadmilling, we generated better threads in less time.

 

Klaus Hoffmann
MfG
IMTA, Inc.

Need a special quote on Threadmills? Click here!

Advantages for solid carbide, straight fluted (STM):

  • Super Sub-micron Grain Carbide
  • Guaranteed Concentricity
  • Sizes from .110 in. and up
  • Cut threads in hardened materials
  • Cut threads in super alloys
  • Resharpenable
  • Special thread forms and pitches available
  • Better control of pitch diameter

Advantages for solid carbide, helically fluted (HTM): Dimensional drawing:

  • Super Sub-micron Grain Carbide
  • Guaranteed Concentricity
  • Sizes from .250 in. and up
  • Cut threads in hardened materials
  • Cut threads in super alloys
  • Smoother cutting, faster feeds and speeds
  • Special thread forms and pitches available
  • Better control of pitch diameter

Advantages for Helical Solid Carbide NPT and NPTF Dimensional drawing:

  • Requires less horsepower than a tap
  • Superior thread quailty and form over conventional tapping methods
  • Better control of pitch diameter
  • Cut threads in hardened materials
  • Cut threads in super alloys
  • Guaranteed concentricity
  • Special thread forms and pitches available

Advantages for Straight Solid Carbide NPT and NPTF Dimensional drawing:
  • Requires less horsepower than a tap
  • Superior thread quailty and form over conventional tapping methods
  • Better control of pitch diameter
  • Cut threads in hardened materials
  • Cut threads in super alloys
  • Guaranteed concentricity
  • Special thread forms and pitches available

Advantages for Brazed Carbide NPT and NPTF Dimensional drawing: tm1500crop.gif Text to be at left of custom area:

  • Requires less horsepower than a tap
  • Superior thread quailty and form over conventional tapping methods
  • Better control of pitch diameter
  • Cut threads in hardened materials
  • Cut threads in super alloys
  • Guaranteed concentricity
  • Special thread forms and pitches available

Advantages for: Brazed Carbide UN internal without coolant Brazed Carbide UN internal with coolant Dimensional drawing:

  • Longer reach
  • More shock resistant
  • Resharpenable
  • Repairable
  • Guaranteed concentricity
  • Through the tool coolant readily available
  • Special thread forms and pitches available
  • Better control of pitch diameter

Need a special quote on Threadmills? Click here!


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