Auto quenching device and auto quenching method

Abstract

The invention discloses an auto quenching device which includes a rack and an induction coil connected to a high-frequency power supply circuit. The auto quenching device is characterized by including: a rotary lifting mechanism including a pneumatic gripper which is arranged longitudinally and used for clamping a shaft workpiece and can be rotated with the axial line itself and lifted vertically; an automatic material feeding mechanism arranged beside the rotary lifting mechanism, wherein the automatic material feeding mechanism is used for sending the shaft workpiece into the rotary lifting mechanism from a material arranging box so that the shaft workpiece can be clamped by the pneumatic gripper of the rotary lifting mechanism; a material receiving mechanism arranged under the rotary lifting mechanism and used for receiving a quenched shaft workpiece; and the induction coil which is arranged transversally and is matched with the pneumatic gripper clamping the shaft workpiece in the rotary lifting mechanism, wherein cooling liquid flows through the induction coil. The auto quenching device can achieve an automatic quenching function on the shaft workpiece. The shaft workpiece is cooled by spraying water thereon directly, so that heat is effectively prevented from transferred into the interior of the workpiece. The pneumatic gripper in the rotary lifting mechanism clamps the shaft workpiece longitudinally, thereby ensuring linear degree of the shaft workpiece.

Description

technical field [0001] The invention relates to an automatic quenching device and an automatic quenching method using the device to quench both ends of a shaft workpiece (especially a motor mandrel). Background technique [0002] Quenching refers to a heat treatment method that uses high-frequency current (30K-1000KHZ) to locally heat and cool the surface of the workpiece to obtain a surface hardened layer. This method only strengthens the surface of the workpiece at a certain depth, while the core basically maintains the structure and performance before treatment, so it can obtain a combination of high strength, high wear resistance and high toughness. And because of local heating, it can significantly reduce quenching deformation and reduce energy consumption. [0003] The traditional manual quenching method is that the worker directly holds the workpiece, puts the part of the workpiece that needs to be quenched into the induction coil with high-frequency current, and wai...

AI Technical Summary

Problems solved by technology

However, in the process of quenching the motor mandrel by this kind of quenching machine, there is a certain distance between the heating and cooling areas. When the heated motor mandrel is transported on the conveyor belt, the heat at both ends of the motor mandrel will be transferred to the motor mandrel. The inside of the shaft causes the inside of the motor shaft to be cooked, causing damage to the internal structure of the motor shaft and affecting the mechanical properties of the motor shaft

In addition, erecting the motor mandrel on the conveyor belt may easily cause slight bending of the motor mandrel, which affects the straightness of the motor mandrel

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