Hey guys! We received from our friend Eng. Carlos Werner, from San Thies Engineering, a very interesting video.
You may not believe, but YES it's REAL! Meet the square hole opening drill. Simply a fantastic idea!
We can find it through internet searches., comments that the idea has more than 130 years old.
in another comment, no site http://www.guiacnc.com.br/index.php?topic=9663.0, it is reported that:
"Actually, A primitive and deficient method was devised by a German engineer in 1917, this modern process was developed here in Brazil By Antonio Cesar da Costa Barros at the USP Polytechnic School, the first prototype was built at Senai Mário Dedini School in Piracicaba."
A copy of the patent registration follows:
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Patent Number: EP1925385 (A1) Applicants: DA COSTA BARROS ANTONIO CESAR Inventors: DA COSTA BARROS ANTONIO CESAR >>International: B23B41/04; B23B41/00 Priority numbers: EP20060024099 20061121 |
Check below the videos of the operation of the drill and another device developed:
make your comment! He is very important to us.!