Sheet Metal Design

I Hope this link will help you

https://www.trfastenings.com/products/knowledgebase/threadforming-screws-for-metal/din7500-tap-fix-hole-sizes-extruded-holes

Hi there,

I believe that should be Flow drilling/Friction drilling/Form drilling process, where the instrument drills the sheet metal and extrudes the excess material to the direction of drilling using the high temperature from the friction between the tool and the material. Thread could be cut either in this process with the special tool or after that with a tap drill.

I haven't seen such a special tool for hand drilling though.

Hi Ivan,

Do you mean something like in this video?

https://www.youtube.com/watch?v=9p1hDLdYuxY

Hi

Threaded hole in a 1 mm sheet is Taping Hole or may be extruded hole depends for what application that hole is used.

Generally creating holes during blanking operation (Punch/Pierce) is preferable, after forming creating a hole may lead to burrs and extruded edges.

Thank you, Nikolay! Thank you, Vishnusundar!

You can do an extruded hole and then tap the wall of the extruded hole.

Look in Mcmaster Carr catalogs "press fit nuts for sheet metal " if you vant to encrease thread length . Otherwise .5 mm pitch will be enough for covers etc.

A sheet metal fabricant did it. I will ask some refinement, but in general I am satisfied

Hi,

why not use tubtara or avdel?

https://www.tubtara.com/sites/default/files/media/cataloguetubtara.pdf

https://www.avdel-global.com/fileadmin/user_upload/Data/PDF/Brochures/EN/Avdel_Threaded_Inserts_EN_mm.pdf

brg

Lajos Vozárik