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Blog

Sheet metal cnc punching

Thursday, May 21st, 2015

CNC punched ventilation grilles

CNC punched ventilation grilles

These heater ventilation grilles have been CNC punched out with specially ground punch and die tooling to speed up production and produce a shape that when bent up produces very little resistance to air flow thereby increasing the overall efficiency of the heater. The parts were CNC punched on our trusty Trumpf 200 punch press which has produced 10s thousands of these parts over the years with no problems at all. The Trumpf 200 machine is a flexible production tool that seems to be able to turn it’s hand to almost anything we through at it and just keeps going and going. With regular services the machine can still produce parts to +/- 0.1mm accuracy and clean edges.

CNC punching electronics chassis covers

CNC punching electronics chassis covers

Here we have a batch of mild steel audio equipment chassis covers that have just been CNC punched on our main CNC punch press the Trumpf 3000R. The ventilation slots have been produced by using a standard library obround punch and die tool set and we have used the presser foot feature on the Trumpf 3000 to stop the webs between the slots tripping up in the sheet. This feature is controlled by the program software to enable us to press the head onto the sheet for the hits that we want. With common line cutting between the panels using a 70 x 5 rectangle tool there is very little waste sheet and the time is also reduces to produce each part leading to competitive prices for the customer.

CNC punched ventilation pattern

CNC punched ventilation pattern

CNC punching a pattern of holes that are close together can often create a lot of stress within the sheet metal. With our Trumpf 3000 we can program the machine’s punching head to press down on the sheet with each hit helping to hold the sheet in place, reducing the amount of distortion. This product is still in the prototype stages but we are expecting to make quite a few of them over the next few months.

If you have a sheet metal project that needs CNC punching, please give us a call and we will be happy to take a look and see what we can do to give you a competitive price or review your design to save money in manufacturing.

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