VNMG is the first choice insert for finish turning when the 55° head angle of DNMG is too large. Its 35° head angle gives it a wide application range and reduces the cutting forces. The table below lists the common sizes available in the market for VNMG inserts by most suppliers.

2019年3月20日 · Most of the ~standard~ tools we use are either 1 or 3° on the front. The Nose Angle would ~I guess~ be the angle of the insert. IE VNMG=35° DNMG= 55° etc... If they only give you the back rake angle, then back subtract the Nose Angle of the insert from the published angle. The difference is the Front Edge Angle.

Composition: A hard, low binder content, alloyed grade WC/Co fine-grain grade. Application: The K68 grade has excellent abrasion resistance for machining cast irons, austenitic stainless steels, non-ferrous metals, non-metals, and as an alternative to the K313 grade on most high-temperature alloys.

Shape: VNMG inserts are triangular with a 35° included angle, providing a good balance between strength and sharpness. This shape offers three usable cutting edges. Negative Rake Angle: The cutting face slopes backward from the cutting edge, providing a strong, durable edge well-suited for tougher materials and interrupted cuts.

VNMG 331 is a 35° Rhombic Negative Double Sided turning insert with 4 effective cutting edges. It has an IC of 9.525 mm (0.375") and a 0.4 mm (0.0156") corner radius. It is clamped via a Cylindrical fixing hole. It has Chip breakers on both faces. For data on any other turning inserts, use our Iso Inserts Calculator.

The most common Positive Inserts are CCMT (rhomboid 80 degree), DCMT (diamond 55 degree), VCMT or VBMT (diamond 35 degree). The relief angle of negative inserts, like the VNMG insert depicted in the figure, is equal to zero. This is because …

Double-sided, 35° rhombic insert, positive rake angle that varies along the edge to negative in order to prevent chipping. Special design reduces cratering. Used for carbon and alloy steel, stainless steel and high temp. alloys. For dimensions and tolerances, see more info.

VNMG-HRM : Negative relief ang., M class, 35deg rhombic insert, for medium cutting to finishing of super alloy

These high-quality indexable toolholders for internal profiling are constructed of hardened tool steel, and feature a precision pocket and secure clamping mechanism for the indexable inserts. They are available in shank diameters from 0.313" to 1.500", in a variety of tool lengths.

Inserts Sub Application Related Tool VNMG*E-PS : Negative relief angle, M class, 35 deg rhombic insert for finishing