Fiber laser butt welding clamping device for tubular parts
A fiber laser and clamping device technology, which is applied to laser welding equipment, auxiliary devices, tubular objects, etc., can solve the problems of affecting the quality of the weld seam, the back of the weld seam collapses, and the clamping force is difficult to control accurately, so as to ensure the welding quality , Improving processing efficiency and ensuring the effect of positioning accuracy
Active Publication Date: 2015-07-22
JIANGSU DNCON LASER TECH +1
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Problems solved by technology
When the positioning accuracy of the tooling does not meet the requirements, the laser often cannot act on the welding part
When the clamping force between the two butt welding parts is too small, resulting in a large gap between the butt welding parts, it is easy to produce weld cracks, weld surface depression is too deep and weld back collapse and other defects, and the base metal absorbs laser energy It will also be reduced, and the power required for welding will increase
When the clamping force between two butt welding parts is too large, the flow of liquid metal in the weld will be hindered during the welding process, and the gas in the weld will be difficult to escape smoothly, resulting in increased residual pores in the weld, so the two If the clamping force between two butt welding parts is too large or too small, the quality of the weld will be affected.
Chinese patent application number 201310173963.7 discloses a positioning device for laser butt welding molds, which is suitable for two steel plates to be welded into one steel plate by laser butt welding. The positioning device cannot accurately control the clamping force between the two butt welding workpieces
The efficiency of spot welding is very low, spot welding destroys the overall quality of the weld, the strength of spot welding is not high, only very light parts can be welded, the clamping force between two tubular parts is difficult to accurately control, and the welding quality is difficult to guarantee
Method used
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Embodiment 1
[0011] See the accompanying drawings, this embodiment includes a mandrel 1, a first sleeve 2, a welding slag receiving sleeve 3, a second sleeve 4, a first pressure ring 5, a second pressure ring 8, a pressure regulating nut 9 and clamping Force testing assembly; the clamping force testing assembly includes a single-chip microcomputer 7, an annular pressure sensor 6 and a digital tube.
[0012] The front end of the mandrel 1 is provided with a limit plate, the limit plate 1-1 is integrated with the mandrel 1, and the rear part of the mandrel 1 has threads. The above-mentioned first sleeve 2 , welding slag receiving sleeve 3 , second sleeve 4 , first pressure ring 5 , annular pressure sensor 6 and second pressure ring 8 are nested on the mandrel 1 from front to back in sequence. The first sleeve 2 leans against the limit plate 1-1. The pressure regulating nut 9 is screwed on the mandrel 1 at the rear side of the second pressure ring 8 .
[0013] The first sleeve 2, the second...
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The invention discloses a fiber laser butt welding clamping device for tubular parts. The fiber laser butt welding clamping device comprises a central spindle, a first sleeve, a welding slag bearing sleeve, a second sleeve, a first pressing ring, a second pressing ring, a pressure regulating nut and a clamping force testing assembly. The clamping force testing assembly comprises a single-chip microcomputer, an annular pressure sensor and a Nixie tube. The first sleeve, the welding slag bearing sleeve, the second sleeve, the first pressing ring, the annular pressure sensor and the second pressing ring are sequentially arranged on the central spindle in a sleeving mode from front to back. The pressure regulating nut is connected to the central spindle portion on the rear side of the second pressing ring in a threaded mode. In the using process, the two tubular parts are arranged on the first sleeve and the second sleeve in a sleeving mode respectively, the welding slag bearing sleeve is located at the butt joint position of the two tubular parts, the clamping force between the two tubular parts is regulated by the pressure regulating nut, and the single-chip microcomputer collects data through the pressure sensor and displays the clamping force value through the Nixie tube. By means of the fiber laser butt welding clamping device for the tubular parts, positioning precision can be guaranteed, the clamping force between the two tubular parts can be accurately controlled, welding quality is guaranteed, and machining efficiency is improved.
Description
technical field [0001] The invention relates to a clamping device for optical fiber laser butt welding of tubular parts. Background technique [0002] Laser welding technology uses a high-energy laser beam as a heat source to instantly melt local materials to form a weld. Fiber laser butt welding does not require filler wire. Since the focused laser spot is very small during fiber laser welding, the requirements for the positioning accuracy of the workpiece tooling and the control of the clamping force between the two butt welded parts are relatively high. When the positioning accuracy of the tooling does not meet the requirements, the laser often cannot act on the welding part. When the clamping force between the two butt welding parts is too small, resulting in a large gap between the butt welding parts, it is easy to produce weld cracks, weld surface depression is too deep and weld back collapse and other defects, and the base metal absorbs laser energy It will also be ...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B23K26/70B23K37/053
CPCB23K26/0823B23K37/0531B23K2101/06
Inventor 陈菊芳周金宇李小平李兴成王江涛陈国炎
Owner JIANGSU DNCON LASER TECH