Cover sealing welding machine of compressor

Abstract

The invention relates to a cover sealing welding machine of a compressor. The cover sealing welding machine comprises a welding part and a rotary working table, wherein the welding part comprises a three-dimensional movable sliding table, a welding gun bracket, a translation servo motor, a welding gun head and a control unit; the welding gun bracket is arranged on the three-dimensional movable sliding table; the translation servo motor can be used for driving the welding bracket to slide; the control unit is used for controlling action of the translation servo motor; the rotary working table comprises a shell clamp, a rotary disc, a revolving main shaft and a revolving servo motor; the shell clamp is used for clamping a workpiece; the revolving servo motor is used for driving the revolving main shaft to rotate; the welding part is provided with a detection unit capable of measuring an outer edge parameter of a workpiece shell in real time; the detection unit is in signal connection with the control unit; an outer edge parameter signal of the workpiece shell detected by the detection unit can be timely transmitted to the control unit; and the signal is compared with a parameter pre-stored in the control unit by the control unit to control action of a next step of the translation servo motor. The welding quality is obviously improved by performing real-time measurement and closed-loop control over a cover sealing welding path line of each body.

Description

technical field [0001] The invention belongs to the field of welding equipment, in particular to a compressor cover welding machine. Background technique [0002] Welding machine is a kind of processing equipment that is often used in the process of processing and production. At present, most welding processes require constant speed, that is, constant linear speed welding. The existing constant speed annular welding machine can meet the requirements of constant speed welding with regular circular curves in the weld seam. However, for non-circular curve welds, using a constant speed, circular seam welding machine cannot ensure that the welding line speed remains constant. The compressor cover has high requirements for welding, that is, the coaxiality of the cover is good, the overall length of the parts requires high precision, and the welding strength between the weldments is also required to be high, that is, the cylinder head and the cylinder bottom of the cover are conne...

AI Technical Summary

Problems solved by technology

At present, the compressor cover welding machine mainly adopts two trajectory control methods: copy profiling and numerical control theoretical ellipse. In the actual production process, the cover of the compressor shell is deformed and deformed after stamping, stretching and other processing. There is a large deviation from the theoretical value, and the discrete size of the individual is greatly increased. The welding leakage rate is high

[0003] Regardless of profiling or numerical control theoretical elliptical trajectory, neither the deviation between the high discreteness of the individual compressor casing and the fixed theoretical trajectory nor the deviation between the center of rotation and the theoretical value caused by inaccurate positioning of the casing cannot be carried out. compensation and correction

Therefore, the conventional welding process and equipment cannot meet the high-precision and high-strength welding technology for the compressor cover

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