Cosen SH-510LDM / 710LDM Semi-Automatic Mitre Bandsaw

The saw frame turns on a heavy cast iron swivel centre to any angle from 60 degrees left to 60 degrees right, read from a large scale. Left and right mitres on one bar are cut from a single clamping without turning the material.

The saw frame rides on dual linear guides rather than a hinge, so the blade descends square through the full depth of a wide section. Cut squareness holds on wide beam at full mitre where a hinge frame would deflect.

On the SH-510LDMA the frame swivels and locks hydraulically and positions itself to an angle entered on the HMI. The operator keys the angle and the saw sets it, so repeat angles are set from the HMI rather than by hand.

The vice clamps through its full stroke hydraulically and is split either side of the blade, so any section within capacity is held on both sides of the cut. Burr is reduced and the remnant kept short.

The larger machine runs its 41 mm blade at 10 degrees to the material on a 7.5 HP drive with a gearbox rated for high lateral load. The blade enters the flange progressively, reducing tooth load at entry on beam, channel and heavy RHS.

The solid guide arm is mounted directly under the saw frame and moves in sync with the vice on dual linear guides. The unsupported blade span is always the minimum for the section clamped, without the operator repositioning the arm.

On the hydraulic swivel model the controls sit on a wheeled station with a quick connector and 7 inch HMI showing cutting information, and on the manual model the hanging panel swivels from front to back of the frame. The operator works from the loading side at either mitre direction.

Feed rate and cutting pressure are set on separate valves, and blade tension is set and held hydraulically. Feed is matched to the section without trial cuts and tension is correct on every start.