CHX 840 with HS loaderClick image to enlargeVollmer’s CHX 840 grinding machine sharpens the tooth face and top of circular saw blades in one set-up.

The machine is tailored to the requirements of sharpening specialists and sawmill operators that have to continuously resharpen circular saws.

The machine is ideal for machining carbide-tipped circular saw blades with a diameter up to 840 millimeters, which are used for sawing wood, aluminum or metal. The portfolio is complemented by the second variant CHX 1300, which machines circular saw blades with a diameter up to 1300 millimeters.

With five CNC-controlled axes the CHX 840 can machine saw blades with all common tooth geometries – this also applies to sawing with axial angle and group toothing. Thanks to a double grinding wheel, the sharpening of tooth face and top is done in a single set-up, reducing set-up times. A transverse feed pawl with pneumatic lifting permits machining of clamping segments and clamping rings.

The CHX 840 is equipped with different automation levels to reduce machining and set-up times. For example, the grinding machine has an optional automatic set-up process, which consists of running in the saw, the diameter detection as well as an acoustic sensor for touching. With the integrated sensor system of the feed pawl, the input of the tooth pitch is no longer necessary and the automatic setting of the hook and clearance angle avoids adjustment errors. The HS automation solution ensures automatic loading of the CHX in order to realize unmanned operation of up to seven hours. The programming and preparation of the saw blade stack is possible during machine operation. Thanks to a saw blade stack height of up to 180 millimeters the automatic machine loading can hold up to 25 circular saw blades. As saws are stacked with intermediate layers, teeth breaking and blade damage can be avoided. The machine is adapted to the individual needs of the customer with the different automation levels.

www.vollmer-group.com

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