Precise positioning device for high-precision isothermal quenching rotary hearth furnace

Abstract

The invention discloses a precise positioning device for a high-precision isothermal quenching rotary hearth furnace. The precise positioning device comprises an isothermal quenching furnace main body, a feeding and discharging mechanism and a cylinder, wherein a guide base plate is arranged below the isothermal quenching furnace main body, a positioning device is arranged on the right side of theguide bottom plate, and the feeding and discharging mechanism is fixedly installed on the right side of the isothermal quenching furnace main body; a rotary furnace bottom is arranged at the lower end of the isothermal quenching furnace main body, and the air cylinder is arranged on the right side of the guide base plate; and a first limiting plate is embedded in the bottom end of a bearing sleeve ring, and a first limiting plate and a second limiting plate are mutually attracted. According to the precise positioning device for the high-precision isothermal quenching rotary hearth furnace, the phenomena such as blocking, collision and side wall failure of a friction channel in the feeding and discharging process of a material tray are avoided, and the fault maintenance cost is reduced; and meanwhile, the production efficiency is improved, and the risk that the product quality problem occurs due to furnace shutdown maintenance caused by material tray stuck, collision and the like is eliminated.

Description

technical field [0001] The invention relates to the technical field related to austempering heat treatment of bearing parts, in particular to a high-precision precise positioning device for an austempering rotary hearth furnace. Background technique [0002] A general isothermal quenching heat treatment rotary bottom heating furnace has a total of 15 stations, that is, 14 charging trays are placed on the bottom plate of the furnace, and heating ferrules are placed on the trays. One of the stations is without a tray, which realizes the In and out of the exchange from the furnace door, during the working process, the rotation of the furnace bottom plate is positioned by the infrared detector. During long-term use, it is often prone to travel errors or insensitive induction, which leads to the inaccurate positioning of the material tray and the furnace door. The mechanism is stuck during the process of pushing and pulling the tray, and the furnace must be shut down for maintena...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a high-precision precision positioning device for austempering rotary hearth furnaces, so as to solve the problems of stroke error or insensitivity in most of the precision positioning devices for austempering rotary hearth furnaces proposed in the above-mentioned background technology during long-term use. Due to the situation, the position of the material tray and the furnace door cannot be accurately positioned, and the production is affected, resulting in a lot of waste of manpower and resources, and even the ferrules of other material trays in the rotary bottom heating furnace are scrapped due to excessive overheating time or cause poor quality, etc. the problem of the situation

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