Patent ID: 8859930
Filing Date: 2014-10-14
Classification: B23K

Abstract:
1. A thermal cutting machine for thermally cutting a workpiece, the machine comprising: a torch for jetting out a plasma arc or a laser beam; and a covering member which comprises an upper shielding plate and a plurality of side shielding plates provided below the upper shielding plate, wherein the side shielding plates are aligned with a clearance between every adjacent side shielding plate, the clearances forming an opening portion, wherein the side shielding plates are arranged such that all straight lines radially directed from a substantial axial center of the torch within the specified angular range intersect at least one of the side shielding plates, and wherein the side shielding plates are arranged so as to cover at least a specified angular range of an outer periphery of the torch, including an outer periphery of the plasma arc or the laser beam generated by the torch.