The matrix defines all parts of a mold having a recess shape in the technique with a prepared pattern for forming the surface of a given element. The term applies to all types of molds used in industry, both in foundry techniques, stamping and forging. Matrices are used in most industries, ranging from the food industry, automotive, aviation, pharmaceutical industry to coinage. Without the use of matrices, it would not be possible to make commonly used everyday objects. Due to the nature of the work, the dies must be made of appropriate materials, mainly steels and aluminum alloys are used, but there is also a justified use of magnesium and polymers.
Milling mold dies depending on the material used and the degree of complexity requires the use of machines, tools and software that meet specific requirements. During the production of prototype matrices, aluminum alloy material is used. This fact results from lower costs of machining, and the stages of prototype verification necessitate the need to introduce changes and make the next version of the matrix.
Aluminum milling requires high cutting speeds, high feed rates and conditions that prevent chips from sticking in the cutting area. Tools used for milling aluminum dies should be very sharp without hardening coatings and additionally the cutting zone must be well cooled by supplying cooling emulsions. The complicated shape of the surface necessitates the use of CAM software to prepare matrix milling technology. CAMWORKS processing support software has advanced functions for generating intelligent machining strategies dedicated to rough milling.