LMT Kieninger is the specialist for special tooling and tools for mold and die manufacturing. The company offers operators tool solutions for copy milling, face milling systems, mono block tools and indexable inserts for complex cutting tasks.

Lightweight construction, complex geometries, high-quality surfaces and demanding materials are just some of the challenges that industrial production presents tool manufacturers. The experts at LMT Kieninger have specialized in especially difficult machining tasks. Today the company is the LMT competence center for special tool systems and die and mold making.

From ingenious inventor to specialist for challenging machining tasks

For example, the line boring bars with integrated slide tools that are used to produce the bearing tunnels of large diesel engines are up to three meters long, have a diameter of up to 200 millimeters and are generally made as one-off products. LMT Kieninger is one of four suppliers worldwide that can design and manufacture these complex powered tools.

Special tools have played a central role at the company since its foundation by Walter Kieninger in 1960. Today LMT Kieninger achieves roughly 30% of its turnover in this LMT Kieninger is the LMT Tools specialist for special tool systemsand tools for die and mold making.The company offers users toolsolutions such as copy mills, face-milling cutters, monobloc tools and indexable inserts for complex machining tasks. sector. It all began with boring heads for the internal machining of tubes. These were then joined by simple milling head systems with exchangeable blades.

After the foundation of the company, these exchangeable blades led Walter Kieninger into die and mold making. He developed interfaces that made it possible to securely fasten indexable inserts to the bodies of tools and adjust them with great precision. They eventually became the standard for the industry without Walter Kieninger directly profiting from this innovation, because he lacked the money to patent his invention. That only changed later. In 1979, the company presented the world’s first – patented – 3D milling head system that enabled users to achieve the highest quality face milling of cylinder heads and casings.

Perfect Interplay

The perfect interplay between the body of the tool and the blades has continued to influence tool development until the present. In the case of so-called monobloc tools, the designers at LMT Kieninger adapt the shape of the body and the cutting materials especially to the workpiece at hand and the machines used. These tools are deployed, for example, in the production of housings of professional electronic tools and the finishing of spectacle lenses and aircraft windows.

The combination of cutter holders and cutting materials is also a significant factor in the development of tools for die and mold making. Current examples of this are the ACU-Jet Double 6 and the Speedlift plunge milling system. The ACU-Jet Double 6 is used for roughing high-strength steel. It is equipped with a double-sided indexable insert. Speedlift is a tool system with adjustable blades that enable users to mill fitting and guide surfaces in locations that are otherwise difficult to reach.

Another milestone in LMT Kieninger's development was the installation of its own coating machine in spring 2012. In September of the same year, LMT Kieninger presented Nanomold Gold, the world’s first coating for indexable inserts specially designed for use in die and mold making. It was created in close collaboration with the coating experts at LMT Fette. Knowledge transfer is also taking place in the other direction. Its expertise in grinding, edge rounding and coating has given LMT Kieninger the role of cutting materials expert within LMT Tools and, among other things, it supplies LMT Fette with gear cutting inserts and ISO indexable inserts.