Watch the detailed video presentation of the Wood-Mizer industrial cutting line used by the Polish company A&M Trak Michał Nowakowski. The video is presented by Adam Kubiak, Wood-Mizer Industrial Equipment Sales Manager, in collaboration with Nowakowski employees.
Since the launch of this range in 2015, woodworking companies around the world have installed Wood-Mizer WB2000 industrial saws, increasing wood throughput productivity by two or even three times. The Wood-Mizer WB2000 industrial sawmill is a machine that combines the benefits of narrow and wide band saw blade technologies. Saw operators appreciate its precise cutting head, solid bed with efficient hydraulics and ease of operation. The WB2000 saw can operate as a stand-alone saw or as part of a wood cutting line in the configuration that best suits the needs of such an operation.
WB2000 saw head and saw blades
The WB2000 saw has been designed to operate with saw blades of 50 mm, 75 mm or 100 mm width installed on 800 mm diameter cast iron handwheels. The use of 50 mm or 75 mm wide blades allows re-sharpening and resawing of blades on Wood-Mizer maintenance equipment, including the BMS600 sharpening and BMT300 resawing machines. "100 mm blades require a more advanced resharpening process and the operator needs to be more experienced. Most of the WB2000 saws ordered by our customers are pre-configured for 75 mm wide blades," shares Adam Kubiak, Industrial Equipment Sales Manager at Wood-Mizer.
Each steering wheel includes a felt and a scraper for cleaning and lubricating the flywheel surface, while a dosing box is installed behind the lid. Small inspection windows allow monitoring of flywheel lubrication. The recommended dosage is 2-3 drops of oil per 5 seconds of steering wheel work.
The WB2000 saw uses the blade cleaning and cooling system LubeMizer. It is a highly efficient mechanism that delivers compressed detergent through nozzles placed below and above the saw blade. It can spray the liquid in a constant or burst pattern, which is particularly useful when cutting hardwoods. The saw head can optionally be equipped with a peeler which considerably extends the life of the cloth. The carbide material welded onto the circular teeth of the blade is 5 mm wide and makes a small cut in the log, removing scale and dirt and allowing the saw blade to penetrate the clean material. Optionally, the WB2000 can also be equipped with a laser pointer showing the line of the future cut on the log surface.
The blade tensioning system consisting of a hand pump and an oil box maintains the correct blade tension during flow. Oil accumulator is responsible for regulating the sail tension whenever the sail crosses a more complex structure in the log, such as a knot. If this happens, the sail receives more load and, for a brief moment, it may slacken. The oil accumulator helps to regulate the tension of the blade continuously, so that the cutting process proceeds in a stable and precise way, regardless of the structure of the wood. The WB2000 can also be optionally equipped with an electric oil pump powered from the operator panel.
The recommended voltage parameters are specified on a sticker next to the pump. "An operator must adjust the blade tensions correctly as this influences the life of the blade. If the blade does not cut straight, it is recommended to adjust the flywheel or replace it with a new one. It is not good practice to over tension the blade," warns Adam Kubiak.
Main motor and saw head feed system
On the left side of the saw head is main electric motorThe main engine can be equipped with a 30 kW or 37.5 kW (optional). variator controlling the linear speed of the blade (18-32 m/s), helping to cut softwood and hardwood.
The WB2000, without a variator controlling the linear speed of the blade, can work at two fixed feed speeds - either 22 m/s for softwood or 26 m/s for hardwood. Switching from one speed to the other is done mechanically and requires the replacement of a set of rollers and belts. It is essential to inform the Wood-Mizer about the linear blade speed adjustment (manual or electric) before ordering, as there is no possibility to change the saw later.
The saw head is fed vertically by a helical gearbox very reliable, known for its high efficiency (97-98%), which allows the use of a 2.2 kW electric motor with less energy input. "The control software used in the saw head feed mechanism is similar to that used in modern lifts. When we need to set the saw head to a certain height, it is moved and stopped by the variable speed drive and PLC unit, but once the saw head reaches the required height, the brake is engaged. The brake is only responsible for keeping the head at the required height and not for stopping the head from moving. This limits heat emission and helps the whole mechanism to last longer," Adam Kubiak assures us.
The units responsible for the horizontal feed of the saw head are located on both sides of the saw frame and are coupled with strong and sturdy chains. With this mechanism, the massive and wide saw head can be moved accurately and effortlessly along the rails during cutting. The maximum cutting speed is 60 m/min, while in reverse motion the speed can reach up to 100 m/min. The saw head movement is controlled by a PLC driver, which constantly analyses its position and slows down when the saw head approaches the rear bumpers.
The WB2000 saw is equipped with two cameras for monitoring the cutting process, which are placed on the saw head next to the main motor. The first camera monitors the blade in operation and the other monitors the saw head's reverse movement. The image is transmitted to the screen in the operator's cab. The video recorder includes a total of 4 surveillance cameras (two additional cameras are optional).
Saw bed and hydraulic log handling system
The frame of the saw is robust and durable, based on two C-shaped steel rails (400 mm wide) that are arranged along the bed. The modular structure allows flexible configuration according to the cutting requirements. The hydraulic functions and equipment of the saw bed are similar to those of other Wood-Mizer saws - a central clamp on two rods, side supports, two chain wheels and three separately controllable drive rollers. There is a 7.5 kW pump (27 l/min flow rate) to power the hydraulics; this can optionally be replaced with an 11 kW pump (50 l/min flow rate). "Most WB2000 saws are ordered with the standard hydraulic pump, as faster hydraulics require advanced operating skills. The operator has to react carefully to the fast working functions of the bed," notes Adam Kubiak. For operators who need to cut longer logs, it is recommended to extend the saw with clamp clamps, which keep the log fixed to the saw bed.
Nowakowski's WB2000 industrial saw has been equipped with a belt conveyor Adjustable conveyor that allows the material to be conveyed onto the receiving module (where the sorting table is located). In front of the conveyor is an absorption roller to cushion the impact of a falling board. Optionally, the WB2000 can be equipped with a tracking conveyor separately. "The tracking conveyor follows the head of the saw, the angle of which is the opposite of a standard conveyor - the tip of the conveyor is raised and so follows the saw blade. This device is useful when cutting large diameter logs. Those hard, heavy planks can tend to break when they fall on the conveyor (e.g. oak)," explains Adam Kubiak.
One of the most valuable components of the WB2000 saw is the log bridge for quick and safe loading of logs onto the bed. Wood-Mizer log decks are available in 3.6 m and 6 m long versions, with 2 or 3 transport chains. "Sometimes companies order a special configuration of two log decks, where one is placed behind the other. The shorter deck is installed inside the production enclosure and the longer one is outside. The outer deck is used for storing enough logs for one shift and the shorter deck is for holding 2-3 logs ready for immediate loading on the saw bed. This is a smart way to limit the opening and closing of the production hall in winter and save heat," explains Adam Kubiak. The log deck is also offered in the latest Heavy-Duty version with increased durability.
Behind the saw is a modular sorting table for automatic material reception and routing to further processing areas. Individual modules (each 3 m long) can be joined into groups of maximum length 9 m (3 modules in total). Groups can be multiplied to build larger sorting areas. "At Nowakowski, the sorting table is electric, with cross chains and pushers. The table can optionally be equipped with pneumatically or hydraulically driven chains. This is a recommended solution for lines where material is received from two or more sawmills working next to each other," explains Adam Kubiak.
A cutting line could also be extended with more machines and equipment, for example, on the left and right side could be installed slides or collecting areas, edging circulars or multi-blade saws. In addition, a conveyor could be installed for collecting material, transporting prisms to the multi-blade saw and wood chips to the chipper.
Convenient WB2000 saw operation
Operator station The WB2000 is built on a raised structure, allowing easy visual control of flow (optional air-conditioned cab). At A&M Trak Nowakowski, the operator's workplace is conveniently located in a custom cab.
Two joysticks and a 12 inch touch screen are provided to easily control the saw. The display shows cutting parameters and setting buttons, while joysticks control the equipment functions. Another screen is installed next to the touchscreen to display the camera image. In the saw's current configuration, the operator can track the position of the blade in the log, the bed behind the saw head, the sorting table and the cutter head post.
The operator's touch screen works in the HEAD (saw head control) and in the function BED (hydraulic system control). After switching the display to the saw head operation function, the display shows information such as saw head height, cutting position, feed speed or current motor load.
Operation of the bed hydraulics is possible after returning the screen to the BED function to control the castors, central clamp, rollers and side supports. With the so-called proportional valve, the operator can adjust the hydraulic speed. By setting the flow in the hydraulic system for a particular function, the operator can limit its speed, which is useful, for example, when he needs to carefully cut the last plank on the saw bed.
Wood-Mizer cutting lines are a modern and comprehensive technological solution for companies that want to increase efficiency and automate production processes. All lines can be flexibly configured to meet customer needs, while world-class service and technical support ensures trouble-free operation and maintenance.
All medium and large woodworking companies are welcome to try working with Wood-Mizer cutting lines. Wood-Mizer's dedicated team of engineers are ready to share their latest knowledge and experience, helping your business expand and prosper.
Contact your local Wood-Mizer representative to order. For more information, visit WB2000 product page.
Wood-Mizer RO S.R.L.
Fabricii Nr. 6, Șura Mică
557270 Jud. Sibiu
Machine info: +40 755 20 20 30
Email: office@woodmizer.ro
www.woodmizer.ro
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