Leaders in Tooling Perfection

Fine Blanking Process

Getting a Better Understanding of the Fine Blanking Process

When you look at some of the equipment and machinery that is out there, you have to wonder how some of things are built or made. Seemingly innocuous things like seatbelt buckles and bottle caps all require the use of highly specialised machines that are designed to work repetitively and efficiently to produce massive quantities of these items. Something as simple as the buckle has to be mass produced while still being able to conform with the international safety standards.

Even the bottle caps that are put on your favourite drink are pushed through a blanking machine that churns out thousands of caps every hour. The idea is that you can create a high productivity for your machines while maintaining a consistently high standard for the products they are manufacturing. There are two types of blanking processes that are used in general; however it’s the fine blanking process that gets used for more precision cuts that have a 100% smooth edge on every cut.

Precision Cutting and Punching That Is Fast and Accurate

A blanking machine is designed to punch through sheets of metal, usually varying in thickness and strength. Some blanking machines are able to handle up to 400 tons of pressure at any given time, allowing them to cut and punch holes straight through some really tough materials. The actual process itself is a triple action where a part of the machine holds down a sheet of metal in place, while another punches a hole straight through it.

The actual punch itself has to be cut and moulded to exact specification so that it is able to endure cutting through the intended material. A 16mm thick carbon steel sheet would be a lot harder to cut through than a sheet of corrugated iron for example. In fact, the punches even require the skilled hands of a tool maker, that is able to craft and shape a punch that allows the blanking machine to cut through the sheets with ease.

The Fine Blanking Process Is Fast and Simple

Once the appropriate punch has been crafted as the template for the cutting, it is installed into the blanking where it can do its job. The precision of the actual tool has an impact on the quality of the cut, and when it is combined with the clamping down process that is unique to fine blanking, you are able to achieve a perfect smooth edge. Everything comes together and the punch is pushed through the metal to produce an exact copy of the template.

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