The RJH BEAR Toolgrinder is a unique machine designed specifically to assist the technician servicing the school or college workshop. The Bear saves time for the technician and eliminates manual grinding variability. It complies with the European Machinery Directive and with the BS 4163:2007 “Health and Safety for Design and Technology in schools and similar establishments” regulations. All RJH education machines carry a 24 month warranty and are supplied with an operating manual.
Price on application
* Please note that these items are factory fitted at the point of manufacture
Chisel Sharpening: The tool is inserted in the swivel arm with the chamfer/blade side down and flat against the grinding wheel. The required grinding angle can be set using the scale to ensure an accurate and consistent result across a batch of tools. The operator then sets the cutting oil flow rate using the control valve; by ensuring that the grinding wheel is adequately lubricated a better finish can be achieved on the tool edge. The chisel or plane blade is then moved inwards and outwards across the rotating grinding wheel (i.e. from the outside edge of the wheel into the centre and back again) in the opposite direction to the rotation of the wheel itself. The finish is then checked and the process repeated as required.
Gouge Sharpening - external edge: This process is similar to that followed for chisel sharpening, except that a radius gouge attachment is used (see BEAR 2 specification overleaf). In addition to moving the tool across the wheel as outlined above, the top handle on the attachment can be used to rock the gouge backwards and forwards throughout the grinding process. This grinds a radius round the full edge of the gouge.
Gouge Sharpening - internal edge: The cone wheel can be used to remove any burrs formed on the inner face of the gouge after it has been sharpened. Once the work rest has been adjusted to the required position, and the cutting oil flow rate set, the inner face of the gouge is placed onto the rotating cone until the burrs have been removed.
Oil Reservoir in pedestal door -The Bear has a recirculatory cooling oil system. Lubricating with oil throughout the grinding process achieves a smoother, more even finish.