FINN-POWER LP6 punch laser machine

FINN-POWER LP6 punch laser machine was manufactured in 2008 in Finland by FINN-POWER OY. The machine was used for machining AISI 304 and AISI 316 stainless steel sheet metal. Since its purchase, it has been regularly serviced by the manufacturer and has undergone annual technical inspections.

The FINN-POWER LP6 is a high-performance sheet metal machining center that combines punching and laser cutting technologies. It enables comprehensive machining of workpieces with a maximum thickness of 8 mm, eliminating the need for additional operations on other machines. The use of both these technologies in a single system reduces task completion times and increases overall production efficiency.

Punching is performed by means of a hydraulic cylinder, whose stroke and speed are fully numerically controlled. The ability to programme the upper stroke limit enables the punch’s movement to be precisely adjusted to the thickness of the workpiece. Adjustment of the cylinder’s lower position, meanwhile, enables compensation of the punch length without the need for additional adjustment shims. The punching system is also equipped with an automatic overload protection mechanism, which protects the machine’s components during operation under heavy loads.

The hydraulic cylinder cooperates with a 20-station turret with interchangeable tool holders. This solution allows the turret to be configured according to the requirements of the production process. Automatic tool exchange takes place in a matter of seconds by rotating the turret along the shortest path to the programmed position. During punching, the head is mechanically locked in place by pneumatic conical positioning pins. The machine is also equipped with the CNC Index Tool system, which enables tools to be rotated automatically to any programmed angle. The indexing mechanism operates simultaneously with the movement of the X and Y axes, meaning that punching, stamping and nibbling at various angles can be performed without the need for manual tool change.

The FINN POWER LP6 punch laser combination machine is equipped with a ROFIN DC025 laser resonator with a power of 2.5 kW. The laser source generates a high-quality beam, which is delivered to the cutting head via a closed, water-cooled optical system with overpressure. This solution protects the beam from dust and other contaminants, ensuring the highest cutting quality. The cutting head is equipped with a quick-change system for 5″ and 7.5″ lenses. Its vertical movement is controlled by a servo drive, whilst the autofocus function automatically adjusts the focal position according to the thickness of the workpiece. All cutting process parameters, such as laser power, nozzle height and gas pressure, are selected automatically by the CNC controller according to the material code selected in the ControlLink database. Beneath the cutting head are two independent chutes designed for small and larger parts, through which the finished parts are fed onto the conveyor.

The sheet metal is positioned on a coordinate table, which enables precise movement of the material along the X and Y axis. The programmable speed and acceleration of the axes enable the adjustment of movement parameters to suit the performed operation, whilst the automatic repositioning function of the sheet along the X axis enables the machining of larger workpieces. The workpiece is clamped to the table along the X axis by four clamps with a central locking system. The patented PCS system automatically adjusts the position of the clamps in accordance with the prepared programme and monitors their position during operation. It also defines safety zones to prevent collisions with tool holders.

The FINN-POWER LP6 punch-laser machine has been designed with simple and intuitive operation in mind. The machine operator has at his disposal an advanced SIEMENS SINUMERIK 840D CNC controller with a user-friendly interface and a range of functions to support day-to-day work. The rigid ‘O’-type design ensures high stability of the entire machine, even during intensive use. The total weight of the machine is 18000 kg.

Technical specifications of the FINN-POWER LP6 punching machine

LP6 punching machine

• punching force: 30 t (300 kN)
• punching method: servo-hydraulic
• feed in the X/Y axis: 3144/1615 mm
• maximum feed rate in the X/Y axis: 120/90 m/min
• maximum positioning speed: 150 m/min
• maximum workpiece thickness (punching – steel): 8 mm
• maximum workpiece thickness (punching – stainless steel): 8 mm
• maximum workpiece thickness (punching – aluminium): 8 mm
• maximum workpiece thickness (laser cutting – steel): 8 mm
• maximum workpiece thickness (laser cutting – stainless steel): 6 mm
• maximum workpiece thickness (laser cutting – aluminium): 6 mm
• minimum workpiece thickness: 0,5 mm
• maximum workpiece dimensions (L x W): 3074 x 1565 mm
• maximum workpiece weight: 200 kg
• number of tool stations: 20, including 9 index stations
• MultiTool head (2 pcs.)
• tool type: Thick Turret
• maximum punch diameter: 89 mm
• number of punch strokes (1-3 mm nibbling): 1000/min
• number of punch strokes (25 mm hole spacing): 400/min
• number of punch strokes (250 mm hole spacing): 150/min
• maximum tool rotational speed: 166 rpm
• tool change time: 1-3 s
• turret rotation speed: 30 rpm
• work chute – maximum dimensions of laser-cut parts: 300 x 400 mm; 500 x 500 mm
• work chute – maximum dimensions of punched parts: 500 x 500 mm
• pneumatic material clamps (4 pcs.)
• maximum deviation of hole position in the X and Y axis: 0,1 mm
• maximum deviation of distance between holes in the X and Y axis: ± 0.05 mm
• maximum angular deviation of the CNC-indexed tool: ± 0,1°
• Pa positional deviation in the X and Y axis in accordance with VDI/DGQ 3441: 0,08 mm (± 0,04 mm)
• Ps spread deviation in the X and Y axis in accordance with VDI/DGQ 3441: 0,04 mm (± 0,02 mm)
• oil tank capacity: 200 l
• weight of the hydraulic unit without oil: 600 kg
• maximum working pressure: 300 bar
• minimum compressed air pressure: 6 bar
• maximum compressed air consumption: 8 Nl/s
• average compressed air consumption: 5,5 Nl/s
• fuses (for 3x 400 V power supply): 3x 100 A
• average power consumption: 20 kVA / 17 kW
• connection power requirement: 80 kVA
• ambient temperature: +10°C/+35°C
• relative humidity: 20-75%
• weight of the machine: 18000 kg

ROFIN DC025 laser source

• type: CO2
• operating hours: 19699 h
• maximum laser power: 2500 W
• laser beam output power range: 250-2500 W
• laser beam output power stability: ± 2%
• laser beam wavelength: 10,6 µm
• laser beam diameter: < 22 mm
• laser beam quality (mod): K > 0,9
• laser beam positioning stability (divergence): ≤ 0.15 mrad (EN ISO 11145)
• polarisation: linear, 45°
• minimum pulse duration: 26 µsec – CW
• fuses (for 3x 400V power supply): 3x 80 A
• average power consumption: + 13 kVA / + 11 kW
• connected load requirement: 60 kVA
• unit dimensions (L x W x H): 1700 x 800 x 853 mm
• control cabinet dimensions (L x W x H): 800 x 600 x 1900 mm
• unit weight: approx. 500 kg
• control cabinet weight: approx. 570 kg

Cutting head

• type: AF 1.5″ with interchangeable lens mount
• focal length: 5″ or 7,5″
• focal length adjustment: programmable
• material detection distance: programmable, capacitive (non-contact)
• cutting gas pressure control: CNC or manual
• maximum cutting gas pressure: 25 bar

LUMIKKO oil cooler

• cooling capacity: 45 kW
• maximum cooling power: 0.64 kW/°C
• closed cooling circuit
• water temperature (main circuit): 20°C ± 1°, resonator
• water temperature (auxiliary circuit): 24°C ± 1°, optics
• tank capacity: 325 l
• air flow rate: 2.1 m3/s
• noise level: 65 dB(A)
• dimensions (L x W x H): 1420 x 1200 x 1950 mm
• unit weight (without water): approx. 550 kg

HERDING DELTA 750-4/9 SB filtration unit

• filters: 4x DELTA 750/9 3K
• filter area: 7,3 m2
• air flow: 500 m3/h
• average penetration rate: 0,01%
• noise level: 74 dB(A)
• dimensions (L x W x H): 1200 x 835 x 2120 mm
• unit weight: 580 kg

Equipment for the FINN POWER LP6 12 43 CNC punching machine

• touchscreen operator panel with SIEMENS SINUMERIK 840D CNC controller
• 20-station turret head, including 9 index stations
• MultiTool head (2 pcs.)
• servo-hydraulic punching head
• cutting head with autofocus
• automatic loading tables operating alternately (2 pcs.)
• table for unloading cut parts
• a chute enabling the punching of smaller parts without micro-joints and their automatic transport to containers beneath the machine table
• laser source: ROFIN DC 025
• rotary (indexable) system for forming from below (2 pcs.)
• coordinate table
• brush tables
• pneumatic material clamps (4 pcs.)
• filtration unit: HERDING DELTA 750-4/9 SB
• oil cooler: LUMIKKO
• hydraulic unit
• electrical cabinet with cooling