Beam machines KRÜSI LIGNAMATIC

A used LIGNAMATIC from KRÜSI

Year of construction 2010

Free-form machining at its best

Machining centre for the highest quality engineering
Timber construction, carpentry special joinery, prefabricated house and element construction.

We are currently happy to offer a second-hand carpentry machine from Krüsi that is second to none.

Complete with tool magazine, track system and 6 pieces of clamping trolleys.

Max. cross-section that can be machined from 6 sides without turning
approx. 1400 mm in Y axis x approx. 1200 mm in Z axis up to a length of approx. 28 m

A and B final drive with Wittenstein / Alpha Robot gearbox
With rigid rail guide for the clamping carriages.
Space required:
Total length of the machine – 46,000 mm
Total length of the guideway – 45,000 mm
Total height of the machine system incl. protective cover – 3,520 mm
Total width of the machine – 6,600 mm
Machine system with protective cabin and light barriers incl. control cabinet complete with
Control without joinery program. ( On request )

Simulation and collision monitoring

Collision monitoring on the system

Technical processing with electrical diagram,
Software PLC, software CNC and documentation
in German.

Technical general machine description
LIGNAMATIC:

Total length of the machine system 46,000 mm
Total height of the machine system incl. protective cabin 3,520 mm
Total width incl. protective cabin 6,600 mm

Machining Center (Robots)

Elements

The stable and heavily built machine stand is welded from steel and very torsion-resistant due to its hollow body. It is precisely machined at the necessary points and has screwed-on, continuously supported, hardened and ground precision round steel guides Ø 40 mm, on which the cross guide support with boom is held or guided (Z-guide). The counterweight for the boom with milling motor is suspended from two heavy precision link chains. It is fully protected and safely housed in the hollow body of the machine stand. The load is deflected by two large sprockets.

The cross guide support is made of special cast aluminum alloy because of its weight. To ensure that the stability of the stand continues to have an effect, it is very thick-walled and well ribbed. The cross guide support is equipped with 6 radial ball guide bushings vertically and 4 pieces horizontally for high loads and high rigidity.

The boom is made of a square steel hollow section and has welded-in reinforcements. It is precisely machined in the necessary places. It is held and guided by two continuously supported, tightly screwed, hardened and ground precision round steel guides Ø 40 mm in the radial ball guide bushings of the cross guide slide. The boom can therefore be moved very smoothly and without backlash at high speed over the entire travel range via the cross guide carriage in the Y and Z directions.

A rotary axis B is installed inside the boom and is deposited in large-dimensioned guides. It essentially consists of a large, tube-like hollow body. At one end is attached a bracket housing for the rotary axis A, on which the main spindle motor is finally held swivelling on all sides. At the other end is a torsionally rigid special coupling for mounting on the rotary drive B. The rotary axes A and B are driven and deposited by Harmonic Drive robot motor gears.

Final drives

The cross-guide support including boom is driven in direction Z by an AC servo motor with holding brake and built-in absolute resolver built in the latest technology. The power is transmitted via toothed belts to the ball screw Ø 40 mm x 40 mm pitch. This lead screw is absolutely backlash-free and has a very high efficiency.

The boom is driven in direction Y by an AC servo motor built in the latest technology with an absolute resolver. The power is transmitted via toothed belts to the ball screw Ø 40 mm x 40 mm pitch. This threaded spindle is also absolutely backlash-free and has a very high degree of efficiency.

The B axis in the boom can be swivelled by approx. 450 degrees parallel to the Y axis. The swivel movement is carried out by a Harmonic Drive robot motor gearbox. The absolute turret is mounted directly on the engine.

Axis A can be swivelled by approx. 200 degrees. The swivel movement is carried out by a Harmonic Drive robot motor gearbox with absolute resolver.

The main spindle motor

The winding of the main spindle motor is similar to that of a normal three-phase motor (3 phases asynchronous). It is very long according to the engine size and small in diameter. To ensure that the speed of the motor can be controlled within wide limits, a special magnetic sheet metal package is installed. The speed control is done from the control system via an electronic current regulator (frequency controller). The motor axis is designed like a machine tool main spindle and is also equipped with special main spindle roller bearings. As a continuous hollow spindle, it is equipped with ISO 40 steep taper at the front. Inside the hollow spindle is a tool feeding device preloaded by a spring package, which can be released by an attached special hydraulic cylinder. It is therefore not possible for the tool to fall out in the event of a drop in current, air pressure or hydraulic pressure. The tool feeding device is equipped with a channel for compressed air so that the tool cone and the receiving cone in the spindle can be blown out when changing tools.

The tool magazine

The tool magazine is mounted on top of the stand and is designed as a double-sided row magazine. The tools are mounted horizontally and held in place by self-locking grippers. The gripper pliers can be opened pneumatically. A total of 15 (16) storage spaces are available.

Tool change (short description):

When the tool is transferred, the in-line magazine in question moves against the main spindle motor, which is ready in the corresponding tool position, and thus transfers the tool to it. At the same time, the main spindle motor blows off the cone of the tool
When the tool is taken over, the feed pin is caught by the feed pliers and pulled in by the disc spring packet. Sensors are used to monitor whether the tool is properly retracted and held. The machine can even detect the absence of the feed pin on the cone. Only afterwards does the gripper open and the main spindle motor moves away with the tool downwards. During processing, the magazine moves outwards. When the return order is issued, the corresponding row magazine retracts and the gripper clamps open. The main spindle motor positions itself in the correct position in a preparation position and then moves from below into the open gripper. The gripper clamps close, the main spindle motor releases the tool and the magazine extends with the tool. The main spindle motor is positioned in the position of the next tool, etc. Practically all motion sequences are monitored by the control system via sensors.

Track system

The track system is set up along a concrete wall. The posts made of DIN T-beams are attached to the concrete wall every 3,000 mm. An extremely strong and secure anchoring is necessary to ensure the precision of the guideway for years. The upper longitudinal members made of DIN T-beams, which are precisely machined at the necessary points, serve as a holder for the hardened and ground precision round steel guide with Ø 40 mm, which is supported and bolted with a saddle every 200 mm. The lower Star profile rail guide is mounted on a special retaining rail made of square hollow section and angle steel. On the precisely machined retaining rail, the hardened precision rack is also screwed on absolutely parallel. The guide rails are mounted in such a way that they are largely protected from dust and damage. The energy chain guides for the 4 tensioning cars are built over the entire length of the track.

Clamping trolley

The clamping stringers are held and guided on top of 2 pieces of linear bearings with super ball guide bushings and at the bottom with 2 pieces of guide cars on the track of the track system. The support arm and also the carriage breast are mechanically precisely machined. Two rows of mounting holes are attached to the support arm for inserting the B5628599 horizontal clamping B5628599 cylinders. The press beam can be adjusted in height by motor means of a threaded spindle and can also be swivelled up by a compressed air cylinder. A special toggle joint automatically locks the press beam in the swivelled position. A compressed air cushion built into the press beam is used for vertical clamping. This means that workpieces of different thicknesses can be clamped at the same time. Each of the four clamping cars is equipped with a state-of-the-art AC servo gear motor with holding brake with built-in absolute resolver. The power is transmitted via a hardened gear wheel to the rack of the track system. Each car is equipped with two energy drag chains. The power and control cables are routed separately. This avoids interference impulses that would arise from the parallel routing of such long cables.

Hydraulic power unit with pressure accumulator

It supplies the machine with pressure oil to release the tool feed in the main spindle motor.

General

All movable cable lines are routed in energy chains. The majority of the cables are equipped with multi-pole plug-in contacts on the machine and control side. The easily accessible junction boxes, which are equipped with plug contacts, make it possible to quickly find possible contact faults.

Specifications

Workspace
Total length of the machine system according to customer requirements normal = 46,000 mm
Total height of the machine system incl. protective cover 3,670 mm
Total width incl. protective hood approx. 6,600 mm
Length of the X-axis guideway 45,000 mm
Number of trolleys 6 4 pieces
Max. transverse travel of the Y-axis boom 1,750 mm
Max. vertical travel of the boom Z-axis 2,030 mm
Swivel range A-axis approx. 200 degrees
Swivel range B-axis approx. 450 degrees
Support width of the clamping carriage 1,300 mm
Working width Y-axis 1,200 mm
Height of the tension beam over support 0 - 300 mm

Travel speeds
Rapid traverse speed X-axis 57 m/min.
Rapid traverse speed Y-axis 40 m/min.
Rapid traverse speed Z-axis 40 m/min.
Feed speed X-axis 0 - 30 m/min.
Y-axis feed speed 0 - 30 m/min.
Feed speed Z-axis 0 - 30 m/min.

Main spindle motor 3-phase asynchronous
Nominal speed 3,000 rpm.
Max. speed 10,000 rpm.
Speed range 300 - 6,000 rpm
Nominal power approx. 20 KW
Rated current 15.3 A
Tool holder DIN 69871 ISO 40
Pull-in bolt DIN 69872 Type A
Tool retraction force 9,800 N
Spindle diameter in the front bearing Ø 60 mm

Tool magazine - automatic tool change
Magazine type: double-sided series magazine
Number of tool positions (16) 15
Max. tool diameter Ø 600 mm
Max. tool length 400 mm
Max. tool weight for length up to 100 mm from spindle breast 15 kg
Max. tool weight for length up to 150 mm from spindle breast 12.5 kg
Max. tool weight for length up to 250 mm from spindle breast 10 kg
Max. tool weight for lengths over 250 mm from spindle chest 7.5 kg
Max. capacity of the stacks with 15 fully occupied seats:
1 x Ø 600 + 7 x Ø 200 +7 x Ø 160
Tool diameters larger than 200 or 160 mm are possible with free adjacent spaces.

Engine hydraulic power unit 0.37 KW
Total connected load of the machine KVA
Pre-fuse at 400 volts 80

Sale from location as seen without warranty and guarantee
Costs for dismantling, packing, loading, transport, etc. are not included in the purchase price.
Payment immediately upon receipt of the invoice without deduction.

The facility can be visited at any time by appointment.

Available from approx. Dec. 2025 / Jan 2026

seller offer No. resale 166860013