METHOD FOR PRODUCING THROUGH-HOLE CONSTITUENT MEMBER

PROBLEM TO BE SOLVED: To provide a method for producing a ball nut 1, having a wide allowable range of heating time, current value, frequency or the like in performing high frequency quenching, thereby contributing to automation.SOLUTION: In the ball nut 1 as an end product, a through-hole 2 penetra...

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Bibliographische Detailangaben
Hauptverfasser:	WATANABE HIROKO, UDAGAWA AKIRA
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method for producing a ball nut 1, having a wide allowable range of heating time, current value, frequency or the like in performing high frequency quenching, thereby contributing to automation.SOLUTION: In the ball nut 1 as an end product, a through-hole 2 penetrating in the axis direction is formed. A spiral groove 5 is provided on the inner circumferential surface 3 of the through-hole 2. In a production process, a drill 30 or a mill is abutted to a chamfered part 22 to drill communication holes 6, 7, while the communication holes 6, 7 are not penetrated but a wall 25 is left in the back. Subsequently, an induction coil 31 is inserted into the through-hole 2 and the inner circumferential surface 3 of the through-hole 2 is subjected to high frequency induction heating. In the following step, the drill 30 or the mill is again inserted into the communication holes 6, 7 to break the wall 25 in the back of the communication holes 6, 7, and the communication holes 6, 7 are finished.