Abstract
The work is devoted to the machinability problems of selected grades of steel in the conditions of cutting rods with a circular saw. Selected indicators of machinability of steels were tested in industrial conditions. Attempts to cut steel were carried out on a BLM EM 80 CNC machining center. The analysis covered the tool wear during cutting of C35EC, Pb-30, 16MnCrSPb5, S355J2+C. The tool (circular saw) was measured before and after machining of steel.
Highlights
Circular saws are used in circular sawing machines for material cutting
As a result of the cutting process performed by successive saw blades, the shape of their edges is gradually changed
The wear of the saw blades increases the transverse loads of the saw, which in turn affects the increase of its deformations and as a result, the gap of the kerf can widen [9]
Summary
Circular saws are used in circular sawing machines for material cutting. The tool is a disk with a large diameter and small thickness. The circular saw is a multi-pointed tool in which the load on a single blade is cyclical and impact-like. As a result of the cutting process performed by successive saw blades, the shape of their edges is gradually changed. The criterion defining the tool life refers to the situation in which the cutting ability of the blades decreases, the cutting temperature increases, noise and vibrations increase and the shape of the blades changes over the assumed criterion [11]. The wear of the blades results in an abrasion of the flank Aα, especially in the tool wedges, which causes them to be rounded. The wear of the saw blades increases the transverse loads of the saw, which in turn affects the increase of its deformations and as a result, the gap of the kerf can widen [9]. The work material and its properties have the greatest impact on tool life [8]
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