Turning cutters, bent undercut, of the Киржачский инструментальный завод

Kirzhach Tool Factory produces bent undercut cutters with soldered plates made of hard alloy according to GOST 18880-73.

Types and fields of application

These cutters are used by turners to process the ends, ledges, and collars of a stepped workpiece on a lathe.

For trimming the ends of parts installed in the centers, we can offer the manufacture of a non-standard undercut cutter, with an auxiliary angle of 32 degrees and a main angle of 93 degrees. The angle at the tip of the cutter turns out to be small, pointed, this feature allows you to get to the very center of the part installed with the help of a thrust center.

Turning undercut bent cutters, manufactured according to GOST or made by special order, are inferior to through-cutting cutters, in terms of durability. It's all about the size of the main angle in the plan – it is smaller on the cutting cutters, but the undercut cutters have their advantages.

Imagine: turning takes place on a hardened crust of a blank cut from a steel sheet using gas cutting. After the undercutting cutter has cut into the hardened metal layer, it comes into contact with only a small part of the cutting edge. Compare with this the work of a passing cutter, which has a large part of the blade running along the crust.

When cutting longitudinally with a bent undercut cutter, the ledges of the stepped part are obtained with an angle of 90 degrees. Due to this, there is no need for an additional trimming operation, time is saved for removing the through-hole cutter and replacing it with a cutting cutter.

The undercut bent cutter is indispensable when turning thin and flexible parts: the smaller the main angle in the plan, the greater the pressure of the cutter on the part, which leads to bending and strong vibrations of the part, and this greatly complicates processing.

When turning such parts longitudinally with a bent undercut cutter, the pressure is directed mainly along the part, so it does not shake or bend. In such cases, we recommend choosing undercutting incisors instead of passing ones.

Bent turning cutters of the Kirzhachsky Tool Factory at Enex

Our advantages

To buy bent undercut turning cutters, GOST 18880 73 in JSC "KIZ" means to increase production efficiency due to the ideal tooling for lathes. 

Our advantages:

• more than 80 years of experience in the development and production of metal cutting tools;
• production facilities;
• high-quality materials and equipment;
• strict compliance with GOST;
• hundreds of design solutions.