Flexible clamping device for longitudinal seam laser welding of thin-walled cylinder and control method for welding seam extrusion force
A technology of thin-walled cylinder and clamping device, which is applied in laser welding equipment, manufacturing tools, welding equipment, etc., to achieve the effect of improving the strength of the weld seam
Inactive Publication Date: 2020-07-10
CHANGCHUN UNIV OF SCI & TECH
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[0005] The purpose of the present invention is to provide a flexible clamping device for longitudinal seam laser welding of thin-walled cylinders, which can solve the problem of no-gap fit and flexible production of thin-walled cylinder longitudinal seam laser welding joints within the full length range
At the same time, the present invention also proposes a welding seam extrusion force control method using the above-mentioned flexible clamping device to solve the problems of how to obtain equivalent extrusion force on both sides of the weld seam and how to control the weld seam extrusion force during the welding process
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[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0033] Refer to attached figure 1 . The invention discloses a flexible clamping device for longitudinal seam laser welding of a thin-walled cylindrical body, which comprises a power linkage mechanism, a transverse feed mechanism, a flexible circumferential clamp mechanism and an auxiliary support mechanism; the power linkage mechanism, the transverse feed mechanism and The flexible circumferential holding mechanisms are arranged symmetrically. ...
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Abstract
The invention discloses a flexible clamping device for longitudinal seam laser welding of a thin-walled cylinder body, and belongs to the technical field of laser welding. The device comprises a powertransmission mechanism, a transverse feeding mechanism, a flexible circumference clamping mechanism and an auxiliary supporting mechanism. The left side and the right side are automatically adjustedthrough first servo motors to drive the belt power shafts to drive the flexible clamping belts, so that the circumferential equivalent radial clamping force is obtained in the full-length range of theto-be-welded workpieces, and no clearance fit of the welding joint is realized; the flexible production is realized, the production efficiency is improved, and the tool investment cost is reduced. The invention further discloses a welding seam extrusion pressure control method adopting the flexible clamping device, the starting and matching of the first servo motors and second servo motors is achieved, the pressure sensor is used for sensing the clamping pressure of the workpieces, and the fact that the two sides of the welding seam can obtain equivalent controllable extrusion force in the welding process is realized, so that the strength of the welding seam is improved.
Description
technical field [0001] The invention belongs to the technical field of laser welding, and in particular relates to a flexible clamping device for longitudinal seam laser welding of a thin-walled cylinder and a method for controlling welding seam extrusion force. Background technique [0002] Thin-walled cylinder usually refers to the material of 3 series and 4 series stainless steel, the wall thickness is between 0.5mm and 2.0mm, and the pipe diameter is between φ100mm and φ600mm; Seam welding; this technology is mainly used in auto parts, home appliances, food machinery and medical machinery and other fields. [0003] The weld seam strength of thin-walled cylindrical longitudinal seam laser welding is directly related to the gap of welded joints and the extrusion force of weld seam. Due to the high yield strength of the stainless steel plate, the rebound after forming will cause a gap of 3mm to 8mm in the welded joint. At present, welding is mainly carried out by adding s...
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IPC IPC(8): B23K26/21B23K26/70B23K101/04
CPCB23K26/21B23K26/702
Inventor 张秋实刘双宇李彦清刘凤德
Owner CHANGCHUN UNIV OF SCI & TECH