Cam conjugate induction hardening equipment

Abstract

The invention discloses cam conjugate induction hardening equipment. The equipment comprises an active cam of a conjugate cam, and the active cam comprises a driving rod, a follower lever and a quenching required cam; the driving rod and the follower lever are fixedly connected and are hinged according to a way capable of rotating around a common axis; an end far from a hinge point of the drivingrod is provided with a roller contacting with a working face of the active cam; n end far from a hinge point of the follower lever is provided with a quenching inductor for induction quenching of a working face of the quenching required cam; a position right opposite to the working face of the quenching required cam is conjugated with a contact position of the active cam and the roller; and the driving rod or the roller is provided with pretightening force for pressing the roller on the working face of the active cam. According to the invention, a distance between the inductor and the quenching required cam is unchanged to guarantee that a linear velocity between the working face and the inductor is unchanged, so as to guarantee a same quenching time on each workpiece surface during a quenching process and endow each part of the working face of the quenching required cam with a basically same hardening layer depth.

Description

Technical field [0001] The invention relates to a heat treatment device for machine parts, in particular to an induction hardening device for cams. Background technique [0002] Cam is a more commonly used component in mechanical transmission. Since the cam transmission is carried out by sliding friction on the cam surface, the surface of the cam needs to be quenched during the cam manufacturing process to ensure hardness and wear resistance. [0003] In the prior art, cam (shaft) induction hardening uses ring-type and profiling inductors, and ring-type quenching inductors are only suitable for small-sized cams (shafts), such as automobile camshafts, and the hardened layer of the cam Unsatisfactory uniformity results in excessive hardening depth on some surfaces. For example, the use of ring-shaped and profiling inductors can easily cause overheating of the cam peach tip, deep hardening layer depth, difficult heating of the cam transition zone, and relatively deep hardening layer ...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the induction hardening of the cam (shaft) adopts ring-type and profiling inductors, and the ring-type quenching inductor is only suitable for smaller cams (shafts), such as automobile camshafts, and the hardened layer of the cam The uniformity is not ideal, resulting in excessive quenching depth on some surfaces. For example, the use of ring-shaped and profiling sensors can easily cause overheating at the tip of the cam, and the depth of the hardened layer is deep. Shallow, uneven depth of final cam hardening

At the same time, profiling sensors are cumbersome to manufacture, and different cams (shafts) require different profiling sensors, which lead to high cost and low work efficiency

Images