Wooden Windows & Doors

Wood is the oldest working material in the production of windows and doors. Due to its natural beauty, good insulation properties and comparatively easy processing, wood is uniquely attractive as a working material. That is why windows and doors made of wood are still the most common type worldwide. What is interesting however, is that the demands placed on the product and on mechanical production vary by country, continent and climate zone.

What remains the same are the production processes that turn the raw material wood into an elegant and technically advanced product. With its profound knowledge of the challenges of window and door production, Leitz is the ideal partner for manufacturing companies all over the world.

The production of windows and doors begins with the length production of the raw wood, the so-called trimming process. Mixed production of hardwoods and softwoods, domestic and exotic woods as well as scantlings (with and without insulating elements) place high demands on the tools used. Resistance and wear resistance of the cutting edges from mixed production has an impact on the potential life of the tools. It is particularly important to cut the workpiece on both sides, as pollution on the face sides has a negative effect on the subsequent machining steps.

Trimming on mitre and crosscut sawing machines with manual feed

The circular sawblade at the top of the workpiece is used with feed on mitre and crosscut sawblades. Low-noise tools for user-friendly working conditions and robust tool layouts are essential for a long tool life.

Trimming on under-table cross-cut saws with manual feed

With under-table cross-cut saws, the wood is cut through from below through the table support. Here, vibration-damped circular sawblades achieve an optimum cutting result and long tool life by maximizing machine protection. Low-noise tools also provide greater user comfort.

Trimming on under-table fast cross-cut saws with automatic feed

The circular sawblade cuts the workpiece from below through the table support on under-table fast cross-cut sawing machines. The mechanical, partly very high feed requires a circular sawblade optimized for stability. The carbide quality used in the Leitz cross-cut sawblades ensures excellent tool life with consistent cutting quality.

The four-sided planing of the scantlings is the basis for high-quality and functional window or door elements. The demands placed on these working steps are very high. Dimensions must be observed, and the later visible surfaces of the component must be planed perfectly on the interior and exterior sides.

This optimum machining concept allows the change from planing the scantlings to profiling strip profiles at the touch of a button, without the need for time-consuming tool changes on the machine.

Surfacing and pre-planing

The high demands for quality and efficiency require rough planing of the visible surfaces first, and then fine planing and finishing.

Low-noise and robust tools optimized for high cutting performance and long tool life, form the basis for further processing. The proven Leitz corrugating technology creates a significant improvement in planing quality and minimizes reworking.

Finish planing

After surfacing and pre-planing, the surface is finished with a maximum chip removal of 1 mm.

The tool solutions from Leitz guarantee a smooth and tear-free finish quality combined with maximum economy and simple handling.

Profiling Of Strips

In addition to friezes for window and sash frames, modern window and door construction also require a large number of strip profiles, such as glazing beads as well as cleats, mounting strips, cover strips and filling bars. As these are mostly seen by the end-user, the quality requirements are very high.

The Leitz tool range is adapted to four-side planers, bench milling machines and CNC machining centres and meets all requirements of quality, flexibility and simple handling. The profiles strips obtain an optimum cutting result, the tools have long tool life and allow profile changes at the touch of a button.

As a competent and trusted partner, Leitz offers tailor-made and economical solutions for the production of modern window and door systems for any project and machine concept. Once the requirements have been confirmed, customers receive their bespoke solution in accordance with machine and software producers. Leitz analyses the processes, plans the most economical manufacturing methods and manufactures the precise tools for your production.

For example, if maximum flexibility is required during production, tool sets are splitted. If, on the other hand, productivity has top priority, complete tool sets are the right solution.

CNC-machines & stationary technology

When profiling on CNC machines, the lightweight construction of the tools is an important component to achieve a low residual unbalance and high dynamics. It is also important to keep machining times as short as possible. The basis for this is a high tool performance, i.e. maximum allowed cutting speeds, which ensures high speeds and feed rates on the machine.

CNC-machines & stationary technology – process optimization

With the right machine and tool concept, the following products can be produced without the need of resetting:

Wooden windows, wood/aluminium windows and front doors
IV-, composite and box windows
Lift-slide elements, low-energy and passive-house windows
Additional elements such as mounting frames, shutters etc.

With innovative tools from Leitz, significant increases in quality and reduced running costs can be achieved.

Through-feed machines & angle units

When profiling individual window and front door components on through-feed machines and angle units, the tools are positioned in such a way that the corresponding window systems are produced in a continuous operation.

The basis for this is an optimized tool system in combination with a sophisticated concept.

Through-feed machines & angle units – process optimization

The parts are often produced in “profile splitting“, which forms the basis of a well-planned tool concept.

As examples, the following profile systems can be produced without the need of resetting:

Wooden windows, wood/aluminium windows and front doors
IV-, composite and box windows
Lift-slide elements, low-energy and passive house windows
Additional elements such as mounting frames, shutters etc.

Bench milling machines

A high degree of flexibility, combined with the tool suitability for manual feed, is necessary when profiling the individual window and front door parts on table milling machines.

Profiles can, for example, be produced as full sets or in different combinations of individual tools, referred to as “Multitool”.

The process of boring and hinge boring can represent a bottleneck in overall production processes. Leitz’s complete range of boring bits and routers offer the best solutions to overcome this. With over 140 years of experience in the production of boring bits, Leitz offers a tool for the entire spectrum of customer requirements.

Boring of the window parts

Solid carbide twist drills from Leitz ensure exact plunging, even on inclined surfaces, low risk of breakdowns due to optimum chip ejection and clean hole edges for visible boreholes at the inlet. Significantly shorter cycle times due to higher feed speeds can accelerate the production process and increase the productivity of the entire window system.

Hinge boring

The coated routers from Leitz are particularly economical. Due to the roughing-finishing design, working steps can be saved, higher feed speeds increase productivity and the coating ensures a long tool life.