The transverse profiling (end processing) and longitudinal profiling of window parts can be carried out successively on different machines. However, there are also arguments for carrying out both steps in one operation on one machining centre.
Small-scale production: A simple table machining centre is often the more economical option if only a few windows are to be produced. It can be used flexibly if a company is not exclusively specialized in windows.
Window combinations: The frame parts of window combinations are more complex than those of a single sash window. On the one hand there are more different profiles: Fixed glazing, for example, requires a different profile than a window sash; frames between window elements are given a different profile than edge parts, at least on one side. On the other hand, frame joints must be made, which is not the case with single-leaf standard windows. These cases are easier to cover on a machining centre.
Flow production vs. production cell: Flow production with different stations for end machining and longitudinal profiling is the most efficient production approach. This is favoured by a low number of variants. For small quantities or a high number of variants (e.g. for window combinations), stationary machining is the solution. A mixture of both is a special machining centre for window parts. It can also be integrated into a flow process with appropriate mechanization. In this way, standard windows and window combinations can be produced in batch size one in continuous flow.
Window tools: The profiling tools used are among the most complex tools in woodworking. The selection of the right supplier should therefore be made with great care. In most cases, tools with integrated shank taper with carbide interchangeable cutting inserts are used. Especially for the cross profile, manufacturers offer different tool concepts to create an optimal surface for gluing the corner joint.
Table machining centre
For small to medium volumes, a table machining centre in gantry design offers the necessary flexibility at a comparatively low investment volume. The window parts are placed and removed by hand. The workpiece is clamped with collets from both longitudinal sides of the workpiece. There are also larger and more complex table machining centres with shuttle table and automation options that have a higher production capacity.
Specialized machining Center for window parts
Sash and frame parts are finished from all sides, i.e. the transverse and longitudinal profiling is carried out as well as the drilling of the necessary holes for frame joints, for the mechanics and, if necessary, for the corner connection with dowels. In mass production, a specialized machining center is used for this purpose. The parts are automatically drawn in from the infeed table, processed and then transported to the discharge table.