Proposal of fixed abrasive wire tool for thin wires considering mirror cutting

摘要

The development of tools that can minimize them is required to effectively utilize rare materials used in expensive parts without waste. The fixed abrasive wire tools used to cut materials, such as glass, by brittle failure have a high efficiency but produce pearskin surfaces. This situation occurs because priority is placed on the core wire diameter required to maintain the current cutting efficiency and the optimal diameter of abrasive grains fixed around the core wire. To realize mirror surface of the cutting surface, it is important to avoid brittle fracture during cutting. For that, the cutting depth of the cutting edge of nonuniform abrasive grains is necessary to make a constant. Therefore, a core wire is inserted into a polyimide tube (PIT), on which a mixture of a polyimide solution of a similar type to that of the PIT and abrasive grains was coated (tool diameter Φ0.4-0.5mm). As a result, the following conclusions were obtained. (1) ductile cutting of glass is possible using the developed tool, (2) the combined use of a continuous air flow and intermittent misting is effective during cutting, and (3) the tool obtained by inserting a core wire into a PIT is robust against breakage and the diameter of the tool can be reduced.