Saws are quite unpretentious in the matter of sharpening, because it is possible to sharpen them, regardless of configuration, using circles of different shapes, which other types of saws cannot boast of.
Saws are quite unpretentious in the matter of sharpening, because it is possible to sharpen them, regardless of configuration, using circles of different shapes, which other types of saws cannot boast of.
Sharpening is classified into sharpening of each individual tooth and full-profile.
The latter is considered universal, an elborov circle is used in shape coinciding with the shape of the tooth.
Sharpening is carried out according to the following scheme: a circle continuously rotating on the axis of the engine performs a difficult movement for grinding the teeth of band saws due to a certain cam mechanism.
A complex movement is divided into several parts: The insertion circle is directed downward, while the front face of the tooth is sharpened and with a cutting edge, the front angle is formed in parallel.
Hollowing out – the circle is steadily boring through the radii of the depression.
Microcracks and stress points formed during the sawing process are removed.
The exit is a circle without jumps, smoothly moves upwards, without breaking away from the profile, exits the tooth, simultaneously grinding through the cutting edge of the tooth and the back face.
The rear corner is formed in parallel.
Then the cycle resumes and so on until all the teeth of the saw are worn through.
Sharpening is mandatory with a grinding wheel along the entire profile of each tooth, while the angle of entry and exit is the same, the cavity does not come off when grinding.
That's the theory.
It is impossible to achieve such a result in real life.
In order for the sharpening to last a longer time, upon completion, the saw teeth must be adjusted – the back and front faces must be processed using a fine-grained touchstone.
09 Martha 2017
