Synchronous heat treatment device for on-line producing crankshafts

Abstract

The invention discloses a synchronous heat treatment device for on-line producing crankshafts. The synchronous heat treatment device for on-line producing the crankshafts comprises a positioning and clamping mechanism, a synchronous transmission mechanism, a parallelogram mechanism and an induction heating mechanism. The positioning and clamping mechanism is used for positioning and clamping the produced crankshafts; the synchronous transmission mechanism is used for driving the parallelogram mechanism and the crankshafts to rotate; the parallelogram mechanism is used for driving the inductionheating mechanism to move transversely in a horizontal plane; and the induction heating mechanism is used for heating and carrying out heat-insulation heat treatment on the crankshafts. When the device carries out heat treatment, the crankshafts are vertically placed, a heat treatment part is heat uniformly so as to be less in deformation, the heat treatment efficiency is high, and the device canbe suitable for on-line heat-treating multi-species crankshafts.

Description

technical field [0001] The invention belongs to the technical field of metal surface heat treatment, and relates to a heat treatment device for an automobile crankshaft, in particular to a synchronous heat treatment device for an online production crankshaft. Background technique [0002] The crankshaft is an important component of the automobile engine. Its production quality, especially the stress concentration, fatigue cracks or fractures at the crankshaft journal and fillets, have a great impact on the service life and comprehensive performance of the engine. To eliminate such effects, crankshafts are usually heat treated during production. [0003] The heat treatment of crankshaft journal and fillet mainly has two methods: on-line production heat treatment and off-line heat treatment: for now, in the process of on-line production heat treatment, the crankshaft is placed horizontally without auxiliary support in the middle, and tempering heat correction is required durin...

AI Technical Summary

Problems solved by technology

[0003] The heat treatment of crankshaft journal and fillet mainly has two methods: on-line production heat treatment and off-line heat treatment: for now, in the process of on-line production heat treatment, the crankshaft is placed horizontally without auxiliary support in the middle, and tempering heat correction is required during the heat treatment process. Straight process, heat transfer and crankshaft self-weight will increase crankshaft deformation; off-line heat treatment usually adopts stacking, tiling or hanging centralized heat treatment method, which requires a special heat treatment production line, which cannot be used with the crankshaft production line. During heat treatment, the crankshaft is stationary. There are many disadvantages such as uneven heating, large deformation, high cost of heat treatment, slow production cycle, etc.

Images