Abstract: A surface-treated component manufacturing method and apparatus capable of detecting an end of a steel bar. Quenching (surface treatment) is locally applied to a plurality of steel bars aligned end-to-end in an axial direction while moving the steel bars in the axial direction. Quenched portions are locally formed on each of the steel bars through a moving step, a detecting step, and a quenching step. In the detecting step, an end portion of one steel bar is displaced relative to an end portion of another steel bar with a pressure roller device, and passage of the end of the one or another steel bar is detected with a detection sensor. In the quenching step, the quenched portions are locally formed on each of the steel bars with a quenching device at a quenching timing determined on the basis of the result of detection by the detection sensor.

Abstract: A surface-treated component manufacturing method and apparatus capable of detecting an end of a steel bar. Quenching (surface treatment) is locally applied to a plurality of steel bars aligned end-to-end in an axial direction while moving the steel bars in the axial direction. Quenched portions are locally formed on each of the steel bars through a moving step, a detecting step, and a quenching step. In the detecting step, an end portion of one steel bar is displaced relative to an end portion of another steel bar with a pressure roller device, and passage of the end of the one or another steel bar is detected with a detection sensor. In the quenching step, the quenched portions are locally formed on each of the steel bars with a quenching device at a quenching timing determined on the basis of the result of detection by the detection sensor.

Abstract: A deburring device includes a barrel with a granulated polishing member filled therein. The barrel is configured by a case formed with an opening hole, and drop prevention member which is fixed to the case and prevents the polishing member from being dropped from the opening hole. A gap into which a tubular end section of a workpiece is inserted is formed between the opening hole of the case and the drop prevention member.

Abstract: A deburring device includes a barrel with a granulated polishing member filled therein. The barrel is configured by a case formed with an opening hole, and drop prevention member which is fixed to the case and prevents the polishing member from being dropped from the opening hole. A gap into which a tubular end section of a workpiece is inserted is formed between the opening hole of the case and the drop prevention member.