Novel multifunctional fixed defocusing amount laser welding head

Abstract

The invention discloses a novel multifunctional fixed defocusing amount laser welding head which comprises a follow-up mechanism, a welding lens and a base. A connection plate is mounted below the base, the two sides of the connection plate are symmetrically and fixedly provided with two guide rods, the guide rods penetrate through mounting holes in the base to be connected with the connection plate, the portions, above the base, of the guide rods are sleeved with elastic elements, the upper surface of the connection plate is fixedly provided with a height adjusting mechanism for adjusting the welding lens, the welding lens is mounted on the height adjusting mechanism, and the lower surface of the connection plate is provided with a contact support and a contact. According to the novel multifunctional fixed defocusing amount laser welding head, the contact tightly presses upper parts to be welded on lower parts at the welding position point by point, the problem of clamping the parts is solved conveniently, welding quality is guaranteed, the structure of a clamp is simplified, operation is simple, flattening, pressing and welding of the parts on the upper surface of the contact are completed in the moving process, and welding efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of laser welding, in particular to a novel multifunctional fixed defocus laser welding head. Background technique [0002] In laser welding such as butt welding and lap welding, because the flatness of the surface of the workpiece to be welded is not high, there are uneven phenomena, which cause changes in the amount of welding defocus and affect the welding quality. Especially for lap welding, the unevenness of the surface also makes it difficult to press the upper and lower parts of the parts to be welded point by point, resulting in quality problems such as virtual welding. [0003] In this case, the usual method is to use a height sensor to measure the height of the position to be welded before welding, and transmit the measurement result to the welding system. After the welding system compares the measured value with the set value, it will be driven to weld The feed axis electric shift table of the hea...

AI Technical Summary

Problems solved by technology

[0004] The result of this is the use of a height sensor, which is costly and requires an additional measurement process. The process is cumbersome and the operation is troublesome, which will cause low work efficiency.

However, it is difficult to ensure that each welding point can be compressed by using a special fixture to compress the upper and lower parts of the lap welding with a spring pressure block, so that it is difficult to ensure the welding quality.

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