| 摘要 |
PURPOSE:To prevent a needle tip and a cutting blade from being damaged by contact between stock materials by arranging the needle tip, the cutting blade and a thread fitting part, which are formed in the stock material, in fixed positions on the same axial core without fail by grinding the needle-shaped stock material and executing inspection to the stock material in the shape of a straight needle. CONSTITUTION:An austenite steinless wire, to which cold drawing work is executed, is cut at the almost same length as the full length of suturing needles 1 and 2. By passing through a molding process, a stock material 3 is produced in the shape of the straight needle. On the surface of the stock material 3, fine ruggedness are formed by the influence of ground particles when mechanical grinding is executed. In a grinding process, an electrolytic grinding processing or a chemical grinding processing is selectively executed while purposing the removal of ruggedness formed on the surface of the material 3 and the removal of burr sticked to the material 3. Since the material stock 3 is formed in the shape of the straight line, each stock material does not get contact with the other stock material 3 when the stock material 3 is fitted to an electrode member 4. When a vessel 8 is immersed in chemical grinding processing liquid housed in a tank 9 and the stock materials 3 are parallelly set in the vessel 8, each stock material 3 does not get entangled with the other adjacent stock material 3. |
