Most punching machines can process metal sheets between 0.5 and 8 mm thick. However, if the sheets are made of hard materials, you need a smaller punch.
For instance, in an 8 mm stainless steel sheet, you can punch a hole with a maximum diameter of 16 mm (with 22.5 Ton punching force). By contrast, you can punch 56 mm holes in an 8 mm aluminium sheet with the same punching force.
You can easily combine different punch shapes. If you want to punch a keyhole, for instance, you can combine a round punch and an oval one. Naturally you might want to get a keyhole-shaped punch, depending on the number of times you need it.
If you want to use a certain shape on the same sheet in a different angle, you do not need a new punch. Thanks to our auto-indexable punching heads, you can index all the tools. This way, you need 40 to 70 % less tools!
Depending on the type and brand of the machine, it can hold up to 50 tools. Sometimes a few more, sometimes a few less. Thanks to auto-indexing, however, you don’t need that many! You can use the same tool in several ways. This way you can do the same things you can do without auto-indexing, but with only 30 % of the tools.
The thickness of the sheet metal X the outer circumference of the punch X the shear strength of the material, divided by 1000.
Some Punching tools can last up to 9.500.000 hits . Their lifespan can however vary significantly, depending on different factors, such as the material that is punched, its thickness, the nibbling step, tool steel, type of tool coating and tool maintenance.