Boring device for tuyere large sleeve of blast furnace

Abstract

The embodiment of the invention provides a boring device for a tuyere large sleeve of a blast furnace. The boring device comprises a power system, a main shaft assembly, a positioning support, a feeding frame, a broach mechanism and a tool rest assembly, wherein the main shaft assembly comprises a hollow main shaft, and the main shaft is in transmission connection with the power system; the positioning support is connected with the main shaft assembly, and the positioning support is used for positioning the main shaft relative to the tuyere large sleeve; the feeding frame is fixedly connected with the main shaft, a strip-shaped groove is formed in the feeding frame, and the included angle between the strip-shaped groove and the axis of the main shaft is equal to the machining inclination of the tuyere large sleeve; the broach mechanism comprises a feeding lead screw, the feeding lead screw is arranged in the main shaft in a penetrating mode, and the feeding lead screw is in transmission connection with the main shaft; the tool rest assembly is in threaded connection with the feeding lead screw, and the feeding lead screw drives the tool rest assembly to conduct axial feeding; and the tool rest assembly is in sliding fit with the strip-shaped groove of the feeding frame, and when the tool rest assembly conducts axial feeding, the feeding frame drives the tool rest assembly to conduct radial feeding. The boring device has the characteristics of uniform cutting and convenience in operation.

Description

technical field [0001] The invention belongs to the technical field of metal cutting equipment, in particular to a large-set boring device for blast furnace tuyeres. Background technique [0002] The large set of tuyere is an essential key component for hot air blowing in blast furnace ironmaking. When the blast furnace is in operation, the hot air at 1200-1300°C enters the furnace body through the tuyere. The large tuyere sleeve part is composed of several parts such as the tuyere flange, the large tuyere sleeve, the middle sleeve of the tuyere, and the small sleeve pressing device. Under normal circumstances, the tuyere flange and the tuyere large sleeve will not be replaced within one generation of furnace life, so the manufacturing quality, especially the processing quality of the contact surface between the large sleeve and the middle sleeve, is very strict to ensure the airtightness of the tuyere equipment. The large tuyere cover of the blast furnace body needs to be...

AI Technical Summary

Problems solved by technology

At present, the processing speed of correction deformation is slow, the processing accuracy is low, and the processing surface quality is poor

The repair period of the large set is long, which affects the construction progress of the blast furnace; the processing accuracy of the large set is low, leaving a safety hazard for the operation of the blast furnace

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