Quenching system for realizing uniform quenching of gears

Abstract

The invention relates to a quenching system for realizing uniform quenching of gears. The quenching system comprises a quenching box, a rotary disc is arranged above the quenching box, a plurality of clamping mechanisms are arranged on the rotary disc, a rotary shaft longitudinally penetrating through the quenching box is arranged at the lower end of the rotary disc, the lower end of the rotary shaft protrudes out of the quenching box, the rotary shaft rotates through a motor, and gear workpieces are arranged on the clamping mechanisms in a sleeving mode. The rotary shaft is provided with a transmission mechanism, the clamping mechanisms rotate relative to the transmission mechanism along with rotation of the rotating disc so as to achieve auto-rotation on the rotating disc, the quenching box is provided with an induction copper pipe, the position, close to the induction copper pipe, of the quenching box is provided with a cooling liquid spraying pipe, and the rotating disc is provided with a plurality of flow holes allowing cooling liquid to flow into the quenching box. The cooling liquid spraying pipe communicates with the quenching box through a pipeline, and a water pump enabling cooling liquid to flow to the cooling liquid spraying pipe is arranged in the quenching box. The quenching system for realizing uniform quenching of gears has the following advantages that circumferential rotation of the gear workpieces in the vertical direction is guaranteed during quenching, and the ends and the outer circumferences of the gear workpieces are uniformly quenched.

Description

Technical field: [0001] The invention belongs to the field of gear processing, and in particular relates to a quenching system for realizing uniform quenching of gears. Background technique: [0002] Gear quenching is a metal heat treatment process in which the gear is heated to an appropriate temperature and kept for a period of time, and then rapidly cooled in the quenching medium. Quenching can improve the hardness and wear resistance of the gear. At present, high-frequency quenching is usually used for gear quenching, and the gear is placed close to the induction copper tube, and the induction copper tube generally inputs high-frequency alternating current (10000-30000Hz or higher). An alternating magnetic field is generated to generate an induced current of the same frequency in the workpiece. The distribution of this induced current in the workpiece is uneven, strong on the surface, but weak inside, and close to 0 in the center, using this skin effect , can heat the s...

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Problems solved by technology

[0003] In the existing quenching system, the gears are usually placed on the turntable, and the material is loaded, high-frequency quenched and unloaded with the rotation of the turntable. In order to ensure the uniformity of quenching, the stations on the turntable are generally rotated during quenching. , but the gear workpiece is limited on the position of the turntable, and its bottom is always in contact with the position of the turntable. Therefore, even if the position on the turntable that limits the gear workpiece rotates, the heating of the gear workpiece in the induction copper tube cannot be guaranteed. The consistency of the heating temperature between the lower bottom and the outer circumference leads to poor uniformity of quenching, which makes the internal structure of the gear vary in strength

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