Heat treatment device for torsion bar of car transmission system

Abstract

The invention discloses a heat treatment device for a torsion bar of a car transmission system. The device comprises a high-frequency heat treatment device, a motor and a transmission mechanism, wherein the transmission mechanism comprises a transmission wheel, a first carrier roller, a second carrier roller and belts; the motor is connected with the transmission wheel; the transmission wheel is connected to the first carrier roller and the second carrier roller respectively by the two belts; the first carrier roller and the second carrier roller are arranged above the transmission wheel and are arrayed in parallel so that a torsion bar workpiece can be conveniently placed and rotated; the motor is connected with a speed reducer so as to guarantee that the speed of the transmission mechanism is not too high and a spline part of the torsion bar workpiece is heated uniformly; the axis of a heat treatment induction coil of the high-frequency heat treatment device is parallel to the axes of the first carrier roller and the second carrier roller so that the spline part of the torsion bar workpiece can be conveniently stretched into the heat treatment induction coil to be heated uniformly and the quality of the torsion bar is improved.

Description

technical field [0001] The invention belongs to the manufacturing field of torsion bars of automobile transmission systems, and in particular relates to a heat treatment device for torsion bars of automobile transmission systems. Background technique [0002] The torsion bar of the automobile transmission system cooperates with other components to transmit torque through the spline part. Therefore, the torsion bar has high requirements on the surface hardenability and internal toughness of the spline part, and high-frequency heat treatment is required for it. In the past, when heat treating the spline part of the torsion bar, the workpiece of the torsion bar was manually rotated to heat it. However, manual operation will cause severe eccentricity of the hardened layer at the heated part of the torsion bar due to uneven force, and cracking is prone to occur. [0003] Patent specification CN202786353U discloses such a torsion bar heat treatment tool, which uses an electric tr...

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Problems solved by technology

However, the belt pulley of this transmission mechanism has three stages in total, which easily causes the belt to be out of sync in the process of transmitting and rotating the torsion bar, increases energy consumption, and causes the rotating heating effect of the torsion bar workpiece to be unsatisfactory. In addition, the The heat treatment induction coil in the patent is located outside the torsion bar workpiece, which is not conducive to the uniform heating of the torsion bar workpiece

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