QHW-800 bridge sawing machine is a highly automatic machine well built to perform various tasks in marble and granite processing. It is ideal in cutting tombstone, building stone and big size slabs etc.
Two bridge tracks are installed on concrete foundation to ensure the bridge saws vibration free. On top of each bridge track is gear/linear guide way system to having the bridge smooth movement and precise positioning.Oil-bath bridge tracks are covered to be protected from dust and water spray.
The bridge has been built in large thickness normalized cast iron. Cast iron gives the bridge high level rigidity, prevents the bridge from shape deformation.
One V-shaped track is machined on the bridge top with small clearance to guide disc holder move in straight line, result in the disc do straight cutting. This disc holder track is also covered and oil-bath.
Disc lifting/lowering movement is powered by one hydraulic cylinder and guided by two surface chrome-plated steel columns.
Motor drives disc directly with the same spindle. The disc can tilt 0˚-45˚ for chamfering cutting.
Limits are presented on bridge and disc holder to easily limit the disc moving range during stone cutting.
In the right end of the bridge are electric cabinet and control panel with LCD display. Cutting parameters can be put into the machine by control panel and then the bridge sawing machine makes automatic cutting owing to its PLC control system.
Equipped frequency converter enables the bridge saws to fit for cutting stones with different hardness and using discs with different diameter.
The hydraulic powered worktable has a dimension big enough for cutting gang saw size slab. It can up turning 85 degree for easy slab loading/unloading and rotating 90 degree for easy cutting all the four sides of a slab.
The machine body is inner lined with putty and then well painted to protect from rusting. All cables are supported by drag chain to ensure safety and long service life.
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