High-efficiency welding wheel grinding device and grinding method

Abstract

The invention relates to the field of large-current welding machine auxiliary equipment, in particular to a welding wheel surface coping device. An efficient welding wheel coping device comprises a drive motor, a coping datum platform, a coping rotary shaft, a coping tool assembly and a strengthening wheel assembly, wherein a cooling mechanism is further arranged on the coping datum platform; the cooling mechanism is matched with a to-be-coped welding wheel; and a tool bit of the coping tool assembly and a pressure head of the strengthening wheel assembly are of concave circular-arc surfaces. An efficient welding wheel coping method comprises four steps of initial coping, fine coping, initial pre-strengthening and reinforced strengthening. According to the efficient welding wheel coping device and the efficient welding wheel coping method, the problem that electrical conductivity of a welding wheel surface is affected by welding wheel material characteristic changes due to coping overheat is eliminated; central heating on an overlapping area is realized; welding wheel oxidation tendency is retarded; heat dissipation is increased; deformation and adhesion of the welding wheel are avoided; the quality and the stability of welding wheel coping are improved; a welding seam defect strip breakage problem due to poor welding wheel coping quality is effectively reduced; and the unit operation reliability is improved.

Description

Technical field [0001] The invention relates to the field of supporting equipment for high-current welding machines, in particular to a device and method for grinding the surface of a welding wheel. Background technique [0002] The welding machine of the cold-rolled product unit adopts a high-current narrow lap welder. The current flowing on the welding wheel during welding reaches tens of thousands of amperes. The surface of the welding wheel is very easy to form an oxide layer. The existing welding wheel grinding device and grinding method It can achieve effective cutting of the oxide layer on the surface of the welding wheel and certain surface strengthening, but the stability of the grinding process cannot be controlled and the grinding quality is not ideal. The welded wheel is prone to false welding and over-burning after welding. The problem, especially when welding high-carbon steel materials is not too many, it is prone to local false welding, which seriously affects the...

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Problems solved by technology

[0002] The welding machine of the cold-rolled finished product unit adopts a high-current narrow lap welding machine. The current flowing on the welding wheel reaches tens of thousands of amperes during welding. The surface of the welding wheel is very easy to form an oxide layer. The existing welding wheel grinding device and grinding method It can realize the effective cutting of the oxide layer on the surface of the welding wheel and certain surface strengthening, but the stability of the grinding process cannot be controlled and the grinding quality is not ideal. Problems, especially when welding high-carbon steel materials, local welding problems are prone to occur when there are not many welding times, which seriously affects the normal production of the unit

[0003] The existing welding wheel grinding device is to install the driving motor of the grinding device on the welding wheel grinding device frame, as well as the welding wheel and the grinding tool that need to be ground; Cut off the oxide layer on the surface, and then use the surface strengthening wheel to strengthen it for 5 minutes. The surface strengthening wheel is a flat wheel, and the hardness of the surface of the welding wheel is strengthened by pressure; the entire grinding process is controlled by the experience of the operator. If there is a lack of experienced operators, it will affect the quality of the welding wheel after grinding, so that the welding wheel will soon need to be ground again, which will affect the production efficiency

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