Integrated milling equipment for welding groove of large irregular medium plate structure

Abstract

The invention discloses integrated milling equipment for a welding groove of a large irregular medium plate structure. The integrated milling equipment comprises a milling cutter system component, a fixed-depth profile modeling component, a milling cutter adjusting component, a normal-direction support component, a horizontal tracking component, a milling cutter box floating component, a 90-degree reversing component, a height raising component, a groove length displacement component and a milling cutter box body. Firstly, separated weldments are assembled into an integrated weldment; afterwards, the welding groove is integrally machined; finally, welding is performed; in this way, the machining productivity of the welding groove is increased to at least double. With regard to integrated machining of the welding groove, the welding groove is machined through one milling cutter at a time, and therefore the consistency and reliability of the size of welding seams of the welding groove integrally machined are higher; the integrated milling equipment is quite beneficial to assembly quality guarantee of the weldments and the dimensional accuracy of the welded product; the machining cost of the welding groove is lower; the dimensional consistency of the welding groove is quite high, and single-sided weld with double-sided formation can usually be achieved; in this way, the welding productivity is further increased, and the production cycle is further shortened.

Description

[0001] technical field [0002] The invention belongs to the field of welding technology, and relates to a welding groove overall processing equipment with irregular large-scale structures whose plate thickness is in the lower limit range of medium and thick plates. Background technique [0003] Generally, the plate thickness range from 4mm to 28mm is called medium plate, and the plate thickness from 4mm to 8mm is located in the lower limit area of ​​medium plate. The thick welded structure in this area is widely used in fields such as storage and transportation tools for liquid media (such as tank trucks), pressure vessels, and chemical reaction devices. Due to the particularity of the built-in medium (such as flammable, explosive, toxic, corrosive) and the particularity of the working environment (such as temperature, pressure) when this type of structure is in the form of a container, usually its welds (such as longitudinal seams, circular seams) The quality level requ...

AI Technical Summary

Problems solved by technology

[0013] ① The welding methods that can be freely formed without opening the groove (such as plasma arc welding and friction stir welding) have too high requirements on the assembly accuracy of the welding groove size, and the traditional production technology of irregular general structure is difficult to meet the above requirements;

[0014] ②Semi-automatic back-sealing welding on one side, root-cleaning and automatic cover-welding process on the other side can greatly reduce the processing accuracy and assembly accuracy requirements of the welding groove size, but the first-time qualified rate of welding quality is low, and the welding productivity is low;

[0015] ③In the welding technology with existing grooves, grooves are made on the separated two parts of the weldment before assembly. After the two parts of the weldment are assembled, the depth of the groove and the height of the blunt edge are often large due to factors such as misalignment. The inconsistency is extremely prominent in the production of the circumferential seam and longitudinal seam of the irregular square and round tank truck; the separate weldments are beveled separately because the productivity is low, and the subsequent cover is automatically Consistency and reliability of welding quality bury a big hidden danger, and often the pass rate is not high;

[0016] ④Lack of high-efficiency and high-precision welding groove processing technology and supporting high-reliability welding seam track adaptive tracking technology for large irregular structures

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