Best Manufacturing Tips on Carbide Tools, Cutting Tools, Threading Tools & Boring Tools

1]Trepanning tools are used in manufacture of Gun Barrels, Pipes for oil well drilling, Large Motor and Alternator shafts and such parts.

2] They save time,electric power/energy and material as compared with solid drilling/ boring.

3] They leave a core which can be used for analysing and making other parts while drilling expensive materials.

4] Trepanning is the only process available to manufacturers where in large and long holes have to be drilled.

5] They can be used for drilling large holes in small length parts too.

1] External Threading Tools:

These tools are used to cut screw threads on the outside diameter of components/parts such as bolts, shafts, pipes, castings and forgings made from ferrous and non ferrous materials.

These tools can be used to cut screw threads in Metric, British, Acme and other standards.

2] Internal Threading Tools:

These tools are used to cut screw threads on the internal diameters of components/parts such as nuts, pipes, collars, castings and forgings made from ferrous and non ferrous materials.

These tools can cut screw threads in Metric, British, Acme and other standards.

The major diameter of the thread has to be machined prior to external threading and the root diameter of the thread has to be machined prior to internal threading.

It is very important to provide an undercut on the outside or inside diameters  before carrying out thread cutting as this allows the threading tool to pass into the undercut just after carrying out threading to the required length and before it returns to the starting point.

While cutting threads it is essential to use a cooling medium such as straight oils or oil in an emulsion with water.

Thread cutting is always done in multiple passes of depths of about 0.1 mm or 0.004 inch to reduce load on the lathe as both cutting edges are working together, maximise tool life and achieve proper thread form to meet gauging requirements.

Overhang of the threading tools is a major factor that contributes to vibration, poor cutting conditions and poor thread form.

As the pitch of threads vary from 0.5 mm to 5.0 mm the rotational speed on conventional lathes are kept low. However, higher speeds can be used in CNC Lathes as the tool return is preset on the machine and controlled.

Care should be taken while setting up for threading so that over run of the threading tool is avoided as it may cause major accidents and damage to the tools and the machine.

 

Carbide tipped tools are used widely in
1] Mining of Coal, Iron Ore and other ores in the form of Augurs, Cutter Picks, Coal Picks etc.
2] Weld bead removal of Electrical Resistance Welded steel tubes.
3] Aircraft component machining.
4] Cutting off knives in machines that mass produce fasteners, needle roller and other types of bearings.
5] Heavy duty planning machines and roll turning lathes for steel mills and heavy engineering industries.
6] Fine boring machines where the corner radii of the tools are very small.
7] Single spindle and multi spindle automatic lathes that mass produce components with profiled grooves and forms.
8] Chisels that are used in making rough, medium and smooth files.
9] Revolving Centers and Dead Centers.
10] Wood working tools and cutters.
11] Machining of steel, cast iron, aluminium and non ferrous components for all types of industries.