Verifying Board Caliper before Cutting Brass Embossing Tooling
Verifying true substrate caliper under standard foot pressure before cutting brass embossing tooling prevents fiber shearing, smashed matrixes, and costly die remakes.
CNC Die Engraving
Cutter Path
Rotary carbide milling cutters carve precise relief geometries directly into metal die blanks based on computer-generated three-dimensional vector paths. In die manufacturing, cnc die engraving produces high-resolution embossing tools without the chemical waste of acid etching. Machine tolerances hold relief depths within five micrometers across the entire engraved field.
The capability stops where sub-micron surface micro-textures require laser ablation technology.
Spindle Speed
High-speed milling spindles rotating at forty thousand revolutions per minute remove material with minimal cutting force. High rotational speeds reduce tool chatter and yield smooth wall surfaces on raised die elements. Computer control adjusts feed rates around narrow internal corners to maintain consistent chip loads and avoid tool breakage.
Smooth sidewall surfaces allow paperboard fibers to slide during impression without catching or tearing. Machining fluid cools the cutting zone and clears brass chips from deep relief channels, preserving cutter sharpness during long milling cycles.
Relief Accuracy
Digital control eliminates manual finishing steps and delivers exact symmetry between paired male and female tooling sets. Exact tool alignment ensures consistent embossing depth across multi-up folding carton layouts. Deviations in spindle alignment produce uneven wall angles that distort embossed package graphics.
Regular calibration maintains positioning accuracy across large die plates.