MSA Option

Dinasaw® Bandsaw Sharpener

MSA PROFILER (OPTIONAL):

The MSA Profiler has the ability to tilt the grinding head 10°, both left and right, at selected points in the grinding cycle.

This is achieved by a cam driven with a series of gears off the amplitude cam(7). The head is actuated via a cam follower and conrod to a worm style rack sliding inside the motor arm. This engages a gear segment connected to the grinding head. The connection between the gear segment and the grinding head relies on the tightness of the 8mm retaining bolt to “sandwich” all the components. The driver gear train and cam may be disengaged by moving the idler gear (B36) down its slot. See Fig. 23. This reverts the machine to perform standard, straight grinding.

Generally it is preferable to angle the backs of the set teeth away from the centerline to increase the shear angle at the outside edge as shown in (dia.7b) This produces a more substantial tooth form which holds an edge longer and is less liable to brittle fracture than standard, flat ground teeth (dia.7a), Additionally this bevel form tracks straighter and is less sensitive to setting errors.

Another option which works well in soft, fibrous woods is to apply a positive angle across the front face of the set teeth, section view (Fig.22c) & plan (Fig.22d), giving the set teeth a very keen outside edge to better sever the wood fibres. This option does not hold its edge as long as (fig.22b).

A further benefit is obtained in beveling the teeth as the grind marks on the tooth face and back produced by the grinding wheel are no longer parallel but oblique to one another. This further reduces the chance of brittle fracture at the tips.