| 摘要 |
<p>The present invention concerns a process for making a monolithic magnetic apparatus for magnetic clamping of ferrous elements (P1), comprising the steps of providing a monolithic support structure (11) formed of ferromagnetic material having a predetermined width (L), length (1) and thickness (S), having first and second sides (12, 13) defined in said monolithic support structure (11) at the larger opposite surfaces, at least one pole piece (30A) comprising a ferromagnetic element (60), at least one first pole piece collector (50), a first magnetic core (40) being interposed between the bottom (50B) of said first collector (50) and said ferromagnetic element (60) and an electric coil (30) for changing the magnetization state of the first magnetic core (40), said at least one first pole piece collector (50) being adapted to convey at least one first magnetic flux (F1) to said first side (12). Characteristics of the method are the steps of removing from said support structure (11) such an amount of said ferromagnetic material, from the surface of said second side (13) as to create at least one recess (R), wherein said recess (R) is formed of a first portion of predetermined depth (S') and diameter (D1), said first portion of said recess (R) forming said bottom (50B) of said at least first pole piece collector (50), removing from said plate of ferromagnetic material an additional amount of said ferromagnetic material to form a second portion of said recess (R), said second portion of said recess (R) forming the lateral surface (50C) of said first pole piece collector (50), so that said first pole piece (50) is formed of one piece with said support structure (11) and said at least one pole piece (30A) is held within the thickness (S) of said monolithic support structure (11).</p> |
