CNC punching techniques cover a wide range of ideas and tooling. The ideas shown here are just a few of those that are available to us when CNC punching your sheet metal work. We work with you to develop your ideas to get the best design for manufacturing to keep your costs down.
CNC punched self tapping plunge form
This simple technique to produce a small raised area in the sheet is can be used with a self tapping screw. The deformation in the sheet creates a local thickening allowing the screw more material to cut into. This is ideal when self tapping into thin gauges such as this 0.9mm zintec panel. These formed plunges can also be used with a tapping tool on our Trumpf 3000R to produce standard metric threads straight into the sheet. We can also use these plunges to provide location points when spot welding parts together. This speeds up the spot welding or welding operations, again saving time and money.
These CNC punching techniques save money and get more from the sheet, saving time in production and part assembly
Nibbled line produced on a CNC punch press
CNC punch presses are great at nibbling (producing holes at speed close to each other). The holes can be separate or as in this example overlap. These CNC punching techniques allow a wide range of shapes to be produced in the sheet. From nibble out large cut-outs where a single hit tool would be tool large to nibble long slots or unusual shapes like those shown here.
Banana tools can be used to produce fan ventilation patterns
Non standard shapes can be produced with special tooling. This fan array pattern was produced using curved tooling called banana tooling. If your production requirements have enough volume it might be worth us investigating dedicated CNC punching tooling.
For more data on CNC punching take a look at “What is CNC punching?”
CSK holes for screws formed in seconds with CNC punch tooling
CNC punching techniques such as forming a CSK straight into the sheet is perfect for saving money. We simple CNC punch a pilot hole and then form the CSK with a single hit. The time taken to form each hole is 1 second which is much quicker than trying to drill in the CSK form.
Not sure, please give us a ring on 01489 577786 and we will be happy to guide you. There may well be a part you are having manufactured that with a little bit of thought will suit one of these CNC punching techniques enabling us to save you time and money in production.