DEVICE FOR CUTTING TO SIZE AND HANDLING A SUBSTANTIALLY EXTENSIVE BLANK FROM A CFK SEMI-FINISHED PRODUCT AND METHOD

摘要

The invention relates to a device (1) for cutting to size substantially extensive blanks (9) from an extensive CFK semi-finished product (6) lying on a cutting table (2) by means of a cutting mechanism (20). The blank (9) can be suctioned by means of a vacuum effector (3) arranged on a handling device, can be held and is then freely positionable in the room. According to the invention, when the vacuum effector (3) is lowered at least one blank electrode (5) is contactable by the blank (9) and correspondingly at least one boundary electrode (4) is electrically contactable by an edge section (12) separated from the CFK semi-finished product (6). Both electrodes (4, 5) are connected via electric lines (14) to a DC source (18), a meter (16), in particular a (DC) ammeter (17). After the separated blank (9) is raised by means of the vacuum effector to a measuring height (22) a current I is ascertained. If a current I of around 0 mA is set, complete separation occurs. If a current I results, clearly greater than 0 mA, at least one not fully separated carbon fiber bridge (23) is present, which is severed in a fully automatic production sequence preferably by pulse-like raising of the current I to a maximum value lMax by fusing. This enables friction-free further processing of the blank (9), significant in particular in highly automated manufacturing plants. The invention also relates to a method for producing blanks (9) from CFK semi-finished products (6) in particular by means of the device (1).