Machine tool and method for assembling a machine tool

A machine tool (1) for the processing and handling of plate-shaped workpieces (22) with a machine table (6) comprising at least two longitudinal frame modules (2) and at least two cross frame modules (3), wherein each longitudinal frame module (2) is connected to the at least two cross frame modules (3) by fastening means and each longitudinal frame module (2) comprises an upper flange (8) and a lower flange (9), which are formed from metallic profiles, and which are connected to one another via spaced posts (10), wherein a guide rail (7) configured for the movable mounting of a tool is supported on at least one upper flange (8), wherein on each longitudinal frame module (2) the posts (10) are welded to the respective upper flange (8) and the lower flange (9) and each longitudinal frame module (2) is connected to the at least two cross frame modules (3, 3′) via mechanical fastening means configured for forming a rack of the machine table (6) of the machine tool (1).