Turning Toolholders - turning insert holder

I had ‘Nungu’ (called Tari in Hindi) in Coimbatore. I’ve eaten it numerous times before, but never this way, with such nice aesthetics.

Available to bore holes with minimum size of 7/16 in manual and CNC lathes, also excellent in boring heads. May be cut to length using and abrasive cut off wheel.

The cutting edge looks the same on all inserts, and the fancy pattern on the insert looks like it is just for aesthetics. However, these are the equivalent of the axes and the kitchen knife – they are different for different workpiece materials and applications (roughing, finishing, etc.).

We however do the equivalent of this every day on our shop floor, when we use inserts without thinking about the cutting edge geometry. Result ? Higher cycle time, lower product quality, higher tool costs.

Nungu is the fruit of the Toddy palm tree, and Neera is the juice that is collected by tapping new shoots. Neera is sweet when freshly tapped, ferments and becomes the sour alcoholic drink Toddy by evening.

Bars are made of alloy steel and heat treated for maximum rigidity. Popular triangular positive rake inserts are held securely by a flat head screw.

Just understand the basics of insert cutting edges from this document and select the correct insert. It can dramatically reduce cycle time, improve quality, reduce tool costs, and improve profits in your CNC machining. The rules apply both to turning insert geometry and milling insert geometry.

Here the nungu was cut into pieces, served with the Neera in the leaf of the tree. Usually the fruit and the Neera are had separately. Vast improvement over serving the Neera in boring and eco-unfriendly plastic glasses.

Insert selection on a lot of shop floors is often done without considering the cutting edge. Would we cut or a log of wood with a kitchen knife, or a tomato with an axe ?