CN107803605B - Welding jig of multilayer thin wall annular member laser circumference seam welding - Google Patents
Welding jig of multilayer thin wall annular member laser circumference seam welding Download PDFInfo
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- CN107803605B CN107803605B CN201710901340.5A CN201710901340A CN107803605B CN 107803605 B CN107803605 B CN 107803605B CN 201710901340 A CN201710901340 A CN 201710901340A CN 107803605 B CN107803605 B CN 107803605B
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- Prior art keywords
- positioning
- gland
- welding
- welded
- positioning disc
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
- B23K26/28—Seam welding of curved planar seams
- B23K26/282—Seam welding of curved planar seams of tube sections
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses a welding fixture for laser circumferential seam welding of a multilayer thin-wall ring piece, which comprises an annular positioning disk made of red copper, wherein the surface of the positioning disk is plated with chrome; a gland cover made of red copper is matched on the positioning plate, and the surface of the gland cover is plated with chrome; a conical washer is arranged on one side of the positioning plate, and a fastening device for pressing the gland bush and the positioning plate is sleeved on the conical washer; wherein a positioning device is also arranged between the positioning disc and the gland. The problem of in the laser circumference seam welding process, effectively prevent part and its adhesion, eliminate welding deformation phenomenon, solved part welding warpage deformation is solved.
Description
Technical Field
The invention belongs to the technical field of laser welding; relates to a welding fixture for laser circumferential seam welding of a multilayer thin-wall annular piece.
Background
The laser circumferential seam welding of the traditional annular piece made of the multilayer thin-wall GH605 material adopts a steel fixture for welding, after the outer circular seam welding is finished, parts are adhered to the fixture, the inner ring of the ring is warped and welded, and the warping in the thickness direction is 0.3-1.2 mm. And the subsequent technological process of bench work separation and heat stabilizing treatment with heat treating fixture can ensure the requirement of the design drawing. But the part deformation is further increased easily in the process of separating the part and the clamp by adopting a bench worker, even the part is scrapped due to tearing, and the product percent of pass is low.
Disclosure of Invention
The invention provides a welding fixture for laser circumferential seam welding of a multilayer thin-wall ring part, which solves the problems that parts are effectively prevented from being adhered to the welding fixture, the welding deformation phenomenon is eliminated, and the welding buckling deformation of the parts is solved in the laser circumferential seam welding process.
The technical scheme of the invention is as follows: a welding fixture for laser circumferential seam welding of multilayer thin-wall ring parts comprises an annular positioning disc made of red copper, wherein the surface of the positioning disc is plated with chrome; a gland cover made of red copper is matched on the positioning plate, and the surface of the gland cover is plated with chrome; a conical washer is arranged on one side of the positioning plate, and a fastening device for pressing the gland bush and the positioning plate is sleeved on the conical washer; wherein a positioning device is also arranged between the positioning disc and the gland.
Furthermore, the invention is characterized in that:
wherein the positioning disk is penetrated with a mandrel, one end of the mandrel is of a cylindrical structure, and the other end of the mandrel is of a threaded column.
The diameter of the cylindrical structure of the mandrel is 20mm, and the mandrel is clamped on a three-jaw chuck of a spindle of the stepping motor.
Wherein, the mandrel is a threaded column, one end of which extends out of the outer side of the positioning plate, and the threaded column is sleeved with a fixing nut.
Wherein the positioning device is a positioning pin which is arranged on the positioning plate.
Wherein the middle part of the positioning disc passes through the step shaft, and the end part of the step shaft is sleeved with a conical washer.
Wherein the fastening device is a spherical shoulder nut.
Wherein the pressure cover is also provided with a plurality of counter bores.
Compared with the prior art, the invention has the beneficial effects that: the positioning disc and the gland made of red copper have better heat conductivity and heat dissipation, and can effectively prevent welding deformation in the process of laser circumferential welding; the chromium coating can effectively prevent the parts from being welded with the clamp body at high temperature.
Furthermore, the mandrel is fixedly connected with the positioning disc through a fixing nut, and meanwhile, the mandrel is connected with a transmission structure of the stepping motor through a circumferential structure of the mandrel.
Furthermore, the positioning pins can prevent the workpieces to be welded from moving relatively, and are used for positioning the angular relationship of the workpieces to be welded.
Furthermore, the combination of the conical washer and the spherical shoulder nut can tightly press the gland and the positioning disc together, and the gland can uniformly disperse the pressing force on the workpiece to be welded, so that the local part of the workpiece to be welded is prevented from being deformed due to the overlarge pressing force.
Furthermore, the plurality of counter bores on the gland can reduce the contact area, so that the compression force between the positioning disc and the gland is uniform.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a right side view of the present invention.
In the figure: 1 is a fixed disc; 2 is a mandrel; 3 is a positioning pin; 4 is a gland; 5 is a spherical shoulder nut; 6 is a conical washer; and 7, a fixing nut.
Detailed Description
The technical solution of the present invention is further explained with reference to the accompanying drawings and specific embodiments.
The invention provides a welding fixture for laser circumferential seam welding of a multilayer thin-wall ring piece, which comprises a positioning disk 1 as shown in figure 1, wherein the positioning disk 1 is made of red copper T2 and is plated with chrome on the surface; three positioning pins 3 are distributed on the positioning plate 1, 3 threaded holes for connecting the core shaft 2 are also formed in the positioning plate 1, the outer diameter of the positioning plate 1 is smaller than that of a workpiece to be welded, and when the workpiece is welded, welding adhesion between a part and the positioning plate 1 is avoided; a step shaft penetrates through the middle part of the positioning disc 1, a conical washer 6 is arranged on the step shaft, a gland 4 is sleeved on the conical washer 6, a spherical shoulder nut 5 is further arranged on the conical washer 6, and the spherical shoulder nut 5 is combined with the conical washer 6 to tightly press the gland 4 and the positioning disc 1; the gland 4 is provided with a plurality of counter bores, and the diameter of each counter bore is 75 mm.
Wherein the one end of dabber 2 is the cylinder structure of diameter 20mm, and the cylinder structure centre gripping is on the three-jaw chuck of step motor main shaft, and the other end of dabber 2 is M12 screw post, and screw post and cylinder structure are respectively at two sides of positioning disk 1, and the screw post is connected with fixation nut 7, makes dabber 2 and positioning disk 1 fixed connection.
The positioning pin 3 is used for penetrating into a positioning hole of a workpiece to be welded and positioning the angular relation of the workpiece to prevent the relative movement of the workpiece.
The using method of the invention is as follows: firstly, cleaning the welding fixture and the workpiece to be welded by using cleaning agents such as acetone and the like, particularly cleaning the weld joint position of the workpiece to be welded; then, sequentially sleeving a plurality of positioning holes on the workpiece to be welded on the positioning pin 3 according to the requirement of angular positioning, and then pressing the gland 4 on the workpiece to be welded through the conical washer 6 and the spherical shoulder nut 5; simultaneously, clamping the cylindrical structure end of the mandrel 2 to a three-jaw chuck of a spindle of the stepping motor to realize automatic uniform rotation of the circumference; the threaded column at the other end of the mandrel 2 is fixed on the positioning disc 1 through a fixing nut 7; then the rotating speed of the stepping motor is 0.95r/min, the longitudinal manual feeding is 0.25mm, and the laser welding is carried out.
The technical scheme of the invention is explained in detail by taking the welding of two components of a certain machine 4 or 5 fulcrum finger tip sheet as an example: the assembly belongs to a thin-wall annular assembly circumferential seam welding assembly, only outer circular seam edge welding is carried out, the number of circumferential welding seams between layers is up to 6, the workpiece material is GH605, the thickness is 0.25mm, the welding seam interval is 0.25mm, the welding seams are dense, and an inner hole is not welded. The welding fixture comprises the following steps of: cleaning the inner and outer surfaces of the workpiece and the welding fixture by using acetone; clamping the 7-piece assembly on a welding fixture according to the angular positioning requirement, and fastening; clamping the cylindrical structure of the mandrel 2 to a three-jaw chuck of a main shaft of a stepping motor; the laser welding is carried out at a circumferential speed of 0.95r/min, with a longitudinal manual feed of 0.25mm and with suitable welding parameters.
Claims (1)
1. The welding fixture for laser circumferential seam welding of the multilayer thin-wall ring part is characterized by comprising an annular positioning disc (1) made of red copper, wherein the outer diameter of the positioning disc (1) is smaller than that of a workpiece to be welded, and the surface of the positioning disc (1) is plated with chrome; the positioning disc (1) is matched with a gland (4) made of red copper, the surface of the gland (4) is plated with chrome, the positioning disc (1) and the gland (4) made of red copper can prevent welding deformation in the laser circumferential welding process, and the positioning disc (1) and the gland (4) are plated with chrome to prevent a workpiece from being welded with the clamp body; a conical gasket (6) is arranged on one side of the positioning disc (1), and a fastening device for pressing the gland (4) and the positioning disc (1) is arranged on one side of the conical gasket (6); wherein a positioning device is also arranged between the positioning disc (1) and the gland (4);
the middle part of the positioning disc (1) penetrates through the step shaft, and a conical washer (6) is sleeved on the end part of the step shaft;
the gland (4) is also provided with a plurality of counter bores;
a mandrel (2) penetrates through the positioning disc (1), one end of the mandrel (2) is of a cylindrical structure, and the other end of the mandrel is of a threaded column;
the positioning device is a positioning pin (3), the positioning pin (3) is arranged on the positioning disc (1), and the positioning pin (3) can prevent the workpieces to be welded from moving relatively and is used for positioning the angular relation of the workpieces to be welded; the fastening device is a spherical shoulder nut (5), when a plurality of positioning holes on a workpiece to be welded are sequentially required to be positioned in an angular manner and sleeved on the positioning pin (3), the gland (4) is pressed on the workpiece to be welded through the conical washer (6) and the spherical shoulder nut (5), the gland (4) and the positioning disc (1) can be tightly pressed together through the conical washer (6) and the spherical shoulder nut (5), and the gland (4) can uniformly disperse pressing force on the workpiece to be welded, so that the local part of the workpiece to be welded is prevented from being deformed due to overlarge pressing force;
the diameter of the cylindrical structure of the mandrel (2) is 20mm, and the mandrel is clamped on a three-jaw chuck of a spindle of the stepping motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710901340.5A CN107803605B (en) | 2017-09-28 | 2017-09-28 | Welding jig of multilayer thin wall annular member laser circumference seam welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710901340.5A CN107803605B (en) | 2017-09-28 | 2017-09-28 | Welding jig of multilayer thin wall annular member laser circumference seam welding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107803605A CN107803605A (en) | 2018-03-16 |
| CN107803605B true CN107803605B (en) | 2021-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710901340.5A Active CN107803605B (en) | 2017-09-28 | 2017-09-28 | Welding jig of multilayer thin wall annular member laser circumference seam welding |
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| Country | Link |
|---|---|
| CN (1) | CN107803605B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202763352U (en) * | 2012-09-18 | 2013-03-06 | 上海强精金属制品有限公司 | Rotation even division positioning welding fixture |
| CN103551753A (en) * | 2013-11-06 | 2014-02-05 | 中国南方航空工业(集团)有限公司 | Welding method for drum-shaped thin-wall part of aircraft engine and clamp used in welding method |
| CN104588890A (en) * | 2014-12-31 | 2015-05-06 | 瑞安市激光应用工程示范中心有限公司 | Clamp for surfacing outer surface of thin-wall annular workpiece |
| CN105397289A (en) * | 2015-12-09 | 2016-03-16 | 贵州黎阳航空动力有限公司 | Ultra thin-wall high-temperature alloy lamination laser welding technology and clamp thereof |
| CN205465020U (en) * | 2015-12-31 | 2016-08-17 | 中核建中核燃料元件有限公司 | Lower barrel assembly welding anchor clamps |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1018215B (en) * | 1989-01-23 | 1992-09-09 | 西安交通大学 | Method of improving reliability of embrittlement monitoring for nuclear pressure vessel |
| CN201423548Y (en) * | 2009-01-12 | 2010-03-17 | 广西玉柴机器股份有限公司 | Processing clamp |
| CN203062141U (en) * | 2012-12-11 | 2013-07-17 | 安徽华东光电技术研究所 | Welding tool of wideband millimeter wave traveling wave tube electronic gun outer shell |
-
2017
- 2017-09-28 CN CN201710901340.5A patent/CN107803605B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202763352U (en) * | 2012-09-18 | 2013-03-06 | 上海强精金属制品有限公司 | Rotation even division positioning welding fixture |
| CN103551753A (en) * | 2013-11-06 | 2014-02-05 | 中国南方航空工业(集团)有限公司 | Welding method for drum-shaped thin-wall part of aircraft engine and clamp used in welding method |
| CN104588890A (en) * | 2014-12-31 | 2015-05-06 | 瑞安市激光应用工程示范中心有限公司 | Clamp for surfacing outer surface of thin-wall annular workpiece |
| CN105397289A (en) * | 2015-12-09 | 2016-03-16 | 贵州黎阳航空动力有限公司 | Ultra thin-wall high-temperature alloy lamination laser welding technology and clamp thereof |
| CN205465020U (en) * | 2015-12-31 | 2016-08-17 | 中核建中核燃料元件有限公司 | Lower barrel assembly welding anchor clamps |
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| Publication number | Publication date |
|---|---|
| CN107803605A (en) | 2018-03-16 |
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