​UHPD 450/650 Universal Prism Saw

The UHPD 450/650 universal prism saw is designed as a single-purpose machine for wood processing - for the longitudinal cutting of cutouts up to a maximum diameter of 450 mm. The machine cuts the side boards from the central prism, or cuts the central prism into two half prisms.

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The cut-out is inserted into the machine center on the machine axis, half-folded by possible bending in the vertical axis, with the thicker end forward. The cut-out must be straight (maximum curvature less than 1%), free of twists, bulges and root run-up. The maximum diameter of the cut-out including curvature shall be 450 mm.

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The timber is cut with saw blades. Each board is cut by two saw blades mounted on two saw shafts. The shafts are above each other and the blades are set against each other on the shafts so that no groove is visible on the sawn timber.
 

The cutout is guided into the machine upstream of the saw blades by a lower chain. The cutout at the machine inlet is passed through the anti-backlash catchers. The interceptors prevent the lumber from being ejected from the machine. The face of the cutout is lifted by the catchers and the catchers follow its profile. After passing through the cutout, they snap into their basic position and cover the machine inlet. Behind the interceptors, a pressure pulley presses the cutout from above and slides the cutout into the saw. The saw blades cut the cut-out.

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After cutting, the lumber is separated by separating boards into centre (prism, double prism) and side boards. At the exit of the machine, the central sawn timber is placed on the exit conveyor with the brackets and is pressed from above by the upper pressure pulley. The side sawn timber is pressed against the metal separation plates by the driven side rollers. These are treated with a wear-resistant sliding surface in exposed areas.

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Once the cutout is cut and the sawn timber is removed from the saw area, the top and side pressures are released. The sawn timber leaves the machine separately (side and centre) and proceeds for further processing by means of a separating conveyor.

The saw shaft housing is height adjustable. It is adjusted so that the bottom saw cuts to half of the maximum cut-out diameter. The pressure rollers are pneumatic. The lifting of the catchers against reverse throw (when reversing the feed) is hydraulic. The roller and chain drives are electric motors.

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The machine is supplied with a clear control panel and an electrical switchboard.

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The machine is approved by the State Testing Institute and fully complies with the current EU regulations.