Manufacturing facility with a tool-changing unit and clamping jaw, and method for changing a tool

A tool-changing unit (39) for a production plant (1) for producing workpieces (2) from sheet metal, the tool-changing unit (39) comprising:

• a tool-holding device (48) comprising a carrier body (49) and a number “n” of tool-holding modules (50) arranged directly next to one another, and each one of the tool-holding modules (50) is held on the carrier body (49);
• wherein each tool-holding module comprises a first coupling means (59) as a component of a coupling device (58), wherein the first coupling means (59) can be brought into coupling engagement or out of coupling engagement with one of the individual clamping jaws;
• and
• wherein each tool-holding module (50) comprises a first actuating means (60) cooperating with the first coupling means (59), wherein the first coupling means (59) can be brought into coupling engagement or out of coupling engagement with one of the individual clamping jaws (43, 44, 45, 46) by means of the first actuating means (60),
• wherein the first coupling means (59) is formed by a first coupling body (63) accommodated in a base body (51) and adjustable relative to the base body (51), wherein the first coupling body (63) is formed by a sphere, a rotational ellipsoid, or a cylinder, or
• wherein the first coupling means (51) is formed by an electromagnet.