Method for manufacturing a vibrator
AssigneeMurata Manufacturing Co., Ltd.
InventorsYuichiro Tokunaga, Takeshi Inao
Life of this patent
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Abstract
A wire 10 made of metal is shaped into a wire having a diameter of 5 mm by a circular die 12 and then, cut to a plurality of lengths of 500 mm. The wire 10 is heated in hydrogen atmosphere at 800.degree. C. for two hours. Then, the wire 10 is drawn by a plurality of triangular dies 14, 16, 18, and 20 sequentially without winding the wire 10 around a reel. As a result, the wire 10 is shaped into an approximately regular triangular configuration in section. The wire 10 shaped into the approximately regular triangular configuration is cut to a plurality of lengths of 40 mm and then supplied to a predetermined place for a subsequent processing.
Claims3
A method of producing a triangular cross sectioned wire comprising:
- forming a straight wire of substantially circular cross section;
- cutting said straight wire of substantially circular cross section into at least one substantially straight length;
- treating said at least one substantially straight length by applying heat thereto;
- washing said at least one substantially straight length with acid;
- and
- drawing said at least one substantially straight length of said straight wire of substantially circular cross section through a plurality of substantially triangular shaped dies of successively reduced size without bending or winding said straight wire therebetween to form at least one substantially straight length of said straight wire having a triangular cross section.
Dependencies are inferred from the claim text.