Threading and Deburring in one operation

Thread Mills from SmiCut (ThreadBurr) will give you a nice entry and a burr free thread.

  • Threading and Deburring in one operation
  • No additional time for deburring

The deburring operation is made automatically when thread milling, which gives you the deburring without any extra costs. There is no disadvantage to use the ThreadBurr, even if you don´t use the deburring function. ThreadBurr is standard on all thread mills from SmiCut.

Vibration-Free Thread Mills

Many of these Thread Mills have a unique vibration-free design, resulting in improved productivity. Discover the advantages of this innovative feature by clicking here.

Play video: ThreadBurr thread mills from SmiCut

Click here if you have trouble watching the video

ThreadBurr deburring edge and comparison of threaded hole entries with and without deburring.

With Solid Carbide Thread Mills from SmiCut you can thread and deburr in one operation.

How to get a burr free Thread

The cutting length is laser marked on the tool and you can find it as well in the catalogue. This is the distance you should go in to the hole from the surface to get a perfect entry.

ThreadBurr thread mill with laser-marked tool diameter, cutting length and part number.

Watch part 3 of the SmiProg video series for more information of how to use ThreadBurr.

Throught holes

You can always use a standard tool for through holes. Please take in mind you should use a tool as short as possible to get best stability and economy.

ThreadBurr positions in through and blind holes, showing when the thread entry is deburred.

Blind Holes

With blind holes it is important to have the correct cutting length (l) on the tool to get the thread deburred. Normally you will find a suitable standard tool. If not, we will cut the tool to the correct length with extremely short delivery time and at a reasonable price. Have in mind the following when you order a tool for blind holes.

  • The cutting length (l) should be required thread length (L) plus one pitch (P).
  • The distance to cut off (c) has to be dividable by the pitch (P).

ThreadBurr shortened for a blind hole, showing cut-off length c and remaining cutting length l.Example

M16x1,5 thread length 24 mm
Thread Milling with NB1212D29_1.5ISO_AC (L = 29,25 mm)

24 + 1,5 = 25,5 mm Required cutting length (l)
29,25 -25,5 = 3,75 mm Maximum cutting off
3,75 / 1,5 = 2,5 Number of pitches to cut off
2 x 1,5 = 3,0 mm Distance to cut off (c)
29,25 – 3,0 = 26,25 mm Cutting length (l) after cutting off
26,25 – 1,5 = 24,75 mm Thread length (L) after cutting off

You only need to cut of the tool when you want to use the deburring function on blind holes and if there is no standard tool with suitable cutting length.

Get the thread deburred on both sides with Double ThreadBurr

It is possible to get the thread deburred on both sides. For this operation you need to use a special tool as thread length depends on the thickness of the material. Read a case study report about Double ThreadBurr. Have in mind the following when you order a tool for deburring on both sides.

  • The cutting length (l) should be equivalent to the thickness of the material.

ThreadBurr cutting length diagram with dimensions l, l minus P and 1.5 times the pitch.Example

M30x3 thread lenth 40 mm

40 / 3 = 13,3 Number of pitches
13 x 3 = 39,0 mm Cutting length (l)

Thread Milling with custom made tool NBB2020D39_3.0ISO_AC (l = 39,0 mm)

Double ThreadBurr deburring both ends of a through thread in the same operation.

Documents

SmiCut Main Catalogue
NEWS 2024 Vibration-Free Thread Mills (PDF)

Links

Vibration-Free Thread Milling
CAD Drawings of Thread Mills
Similar Posts
Coated thread forming tap for chip-free production of internal threads.
Products

Thread Forming Taps – Strong Threads with Chip-Free Machining

Form strong threads – quickly, reliably and chip-free With thread forming taps, also known as…
Thread mill with an upward arrow illustrating improved machining economy.
Technical Information
Improving Economy of Thread Milling Tools
Thread mill cutting an internal right-hand thread, with an inset top view showing the cutter's circular path.
Technical Information
How to Choose the Correct Thread Mill Diameter
Straight-flute and spiral-flute threading taps in several sizes.
Products
Universal Threading Taps
Thread turning diagram relating pitch P, diameter D and helix angle lambda.
Technical Information
Helix Angle in Thread Turning
Comparison of LC and HC FourCut carbide inserts for grade selection.
Technical Information
Choose the Right Carbide Grade for FourCut Inserts
Internal thread turning boring bar with a triangular indexable insert.
Technical Information
Essential Guide to Minimum Bore Diameter in Thread Turning Tools
3D CAD model of a FourCut insert with four cutting edges.
Technical Information
FourCut CAD Drawings: Enhancing Production with 3D STEP Files
Solid carbide end mills for aluminium in three sizes.
Technical Information
Solid Carbide End Mills for Aluminium
Solid carbide thread mills illustrating the thread milling FAQ.
Technical Information
Thread Milling – FAQ