US 6,745,644 B1Granted

Method for guiding an endless band-saw blade

AssigneeIseli & Co. AG Maschinenfabrik

InventorBenno Iseli

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Abstract

In installations for truing up band blades, band-saw blades must be precisely measured, in order to be trued up accurately. The band-saw blade to be trued runs over two deviation stations and is trued up in the upper linear guide area. The invention provides a saw-band guide section in order to measure the pre-tension in the saw blade which creates the desired bowing. The saw-band guide section is formed by two parallel guide bearers, each of which is subdivided into two sub-bearer sections. The band-saw blade is guided on bearing rollers between the guide bearers and guided by dead rolls which are mounted on pivoting carriages into a curve which corresponds to a clothoid arc. A measurement carried out by a measuring bar comprising sensors provides an extremely accurate, constant result in an area practically devoid of stress.

Claims10

Dependent claims

A device for measuring and setting the tension of a band-saw blade, wherein the band-saw blade is guided around two deviation stations arranged at a distance from one another, with which the band-saw blade in each case is guided with a constant radius, and at least one straight-lined path arranged therebetween, wherein there is present at least one transition region from a deviation station with an increasing radius up to the straight-lined path, wherein the band-saw blade in this transition region is guided with an increasing radius at least approximately in the shape of a clothoid arc, wherein the device comprises pressure rollers which depending on the measurement are controllable with respect to change in pressure and are arranged in the straight-lined path, characterized in that the measurement of the stress is effected by way of a measuring station which is arranged in the region in which the band-saw blade in the transition region is guided with an increasing radius of a clothoid arc.

Dependencies are inferred from the claim text.