Rack quenching clamp

Abstract

The invention provides a rack quenching clamp. A pair of contactable power-on electrode elements, a pair of conducting elements, support elements and a cooling water jetting element are arranged oppositely at intervals as required along the length direction of a rack, wherein the pair of contactable power-on electrode elements are configured at the surface or back of the rack; the pair of conducting elements are supported at the lower parts of the power-on electrode elements and respectively provided with terminal parts; the support elements are supported at two approximate end parts of the rack; the cooling water jetting element is configured between the pair of contactable electrode elements; the elements form a plate which is slightly rectangular from the plane, is integrally arranged on a base and forms an assembly; and the base is installed on a clamp installation platform of a high-frequency quenching device and can be assembled or disassembled in a positioning state. By integrally mounting all the elements for quenching on the base to form the assembly, various racks can be easily quenched, and the preparing time of quenching operation is shortened; meanwhile, the uniform quenching precision can be realized on the category of various racks.

Description

technical field [0001] The invention relates to a practical rack quenching fixture used in a high frequency quenching device for quenching the tooth surface or back of a rack with high frequency current. Background technique [0002] Conventionally, Patent Document 1 discloses such an induction hardening apparatus, for example. This induction hardening device is equipped with a unit conductor formed by combining a first conductor and a second conductor with an electrical insulating material, a first contact electrode, a second contact electrode, a non-contact conductor with cooling means, and a device for pressing the rack from above. Hydraulic cylinder, etc. Moreover, when the device quenches the tooth surface of the rack, the two contact electrodes are brought into contact with the tooth surface side and directly energized with a high-frequency current; when the back surface of the rack is quenched, the upper and lower positions of the rack are Reverse, and make the two ...

AI Technical Summary

Problems solved by technology

[0003] However, in this high-frequency quenching device, the hydraulic cylinder, the first contact electrode, the second contact electrode, and the cooling means as the workpiece supporting the rack are all separately installed on the quenching device, so if the length of the rack Or the shape of the outer diameter changes, then it is necessary to adjust the position of the first contact electrode and the second contact electrode or the hydraulic cylinder according to the change.

As a result, it takes a long time to adjust each component or the replacement work itself when replacing the rack, the preparation time tends to be longer, and the manufacturing cost increases. At the same time, it is difficult to achieve uniformity of quenching accuracy regardless of the shape (type) of the rack (reproducibility)

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