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Industry focus and specialties

The tool portfolio quickly reveals the strength of the partnership and innovation in the field of aeronautics: it includes many HVM special milling cutters for machining light metals, plastics, and composite materials. Operations on plastics and light metals are often carried out with tools that have only one cutting edge. Diager Industrie offers a wide range of end mills for such “soft materials” and manufactures them in large series.

Components for aeronautics must be very light yet as strong as steel. These requirements are met by plastics that are reinforced with fibers (e.g., glass, carbon, or others). Such composite materials are very difficult to machine. Consequently, high demands are placed on the tools, and above all, a great deal of experience is required for their design. Diager Industrie has built up this know-how over generations and uses it for the success of its end customers.

The company maintains strong partnerships with well-known companies in the aerospace, energy, mechanical engineering, and automotive industries and focuses exclusively on the development and manufacture of customized cutting tools.

Other highlights of the product portfolio include tools for drilling, milling, and reaming operations, which are optimized through innovative processes. 35% percent of production is standard end mills, while 65% is custom specialty end mills. Diager Industrie also offers comprehensive services, including tool maintenance and resharpening.

Technology and manufacturing expertise

One of the keys to Diager Industrie’s success is its close collaboration with NUMROTO. The software is ideally suited for the production of form milling cutters and special tools that require the highest precision. NUMROTO also supports tool preparation with a perfectly adapted solution for cylindrical grinding and end operations.

Diager relies on a pool of 135 machines, 45 of which are CNC tool grinding machines from leading suppliers. These include many NUMROTO machines from the manufacturers Vollmer, Strausak, Reinecker, and TTB. These machines cover the entire manufacturing process from cylindrical grinding to finish grinding. Each of the machines mentioned has its specialties: one can grind very small dimensions with micrometer precision, while the other can optimally grind large diameters or long workpieces. Nevertheless, NUMROTO is always operated in the same way, so Diager Industrie can save a lot of effort in training operating personnel.

The NUMROTO machines are equipped with automatic loaders and robots, so that series of up to 300 tools can often be produced overnight or on weekends. It is important that the ground geometry, such as the diameter or flute depths, is monitored with in-process measurement so that consistently high product quality can be guaranteed.

Thanks to NUMROTO’s intuitive 3D simulation, every tool can be analyzed down to the smallest detail before production. The software enables high-resolution visualization of the tool if required and prevents potential sources of error with automatic wheel removal and collision checks. Cyril Jacqueson, a machine technician with over ten years of experience, emphasizes: “NUMROTO is pragmatic and easy to use – an indispensable software in our manufacturing process.”

The NUMROTO Draw function provides precise technical drawings that enable consistent and traceable documentation of existing and new tools. Vectorized NUMROTO 3D tool views are generated automatically, saving time and money when creating product documentation while providing flexibility to customize dimensioning and layout.

Successful applications in practice

Diager Industrie’s multi-function tools and form end mills are used for a wide range of applications, particularly in the aerospace industry. Examples of successful applications include form end mills for machining aircraft windows, multi-function tools for drilling, countersinking, and milling, as well as tools for machining demanding materials such as Kevlar, aluminum, and wood.

A look into the future

Diager Industrie is a future-oriented company with a long family tradition. The latest technology, a committed team, and a strong customer focus guarantee that the success story will continue. In collaboration with NUMROTO, the company is setting standards in cutting tool technology – to the delight of customers worldwide.