CN110405400A - A kind of end enclosure structure part welding dislocation control tooling and assembly method - Google Patents
A kind of end enclosure structure part welding dislocation control tooling and assembly method Download PDFInfo
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- CN110405400A CN110405400A CN201910736885.4A CN201910736885A CN110405400A CN 110405400 A CN110405400 A CN 110405400A CN 201910736885 A CN201910736885 A CN 201910736885A CN 110405400 A CN110405400 A CN 110405400A
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- hemisphere
- positioning body
- mandrel
- bushing
- chassis
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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
- 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
- B23K37/0426—Fixtures for other work
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding Control (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The present invention provides a kind of end enclosure structure parts to weld dislocation control tooling and assembly method, including compression plate, positioning body component, bushing and support rod, positioning body component include mandrel, positioning body and chassis；The aperture of chassis upper surface installs mandrel perpendicular to chassis；Positioning body is circular ring structure, is coaxially mounted on domain with mandrel, and positioning body upper surface is fitted closely with hemisphere inner wall shape face to be welded；The compression plate is ring structure, and inner hole shape face is fitted closely with hemisphere outer wall shape face to be welded, and compression plate is mounted on chassis by several support rods, is cooperated with positioning body, fixed hemisphere body position；Bushing is hollow step column, and inner hole and spindle thread cooperate, and upper end passes through front connector inner hole, cooperates with washer and fastening nut, front connector is fixed in mandrel.Optimizing welding process of the present invention solves certain engine front head end face girth welding dislocation problem on deformation using reasonable assembly localization method.
Description
Technical field
The invention belongs to unimach bearing structure part welding manufacture technology scopes, are related to a kind of certain motor body envelope
The welding of header structure part, which misplaces, to be controlled.
Background technique
As certain engine important feature component, front head is by front connector and two kinds of part assembly welding shapings of hemisphere, knot
Structure is as shown in Figure 1.Weldquality will not only meet the examination design objective requirement of burning chamber shell pressure-bearing, also need to meet engine production
Product powder charge design requirement.Due to front connector and hemisphere wall thickness are relatively thin, weld before the factors such as state and processability difference, assembly easily make
It misplaces and deforms at weld seam.Using existing internal stay tool assembled engines end enclosure structure part, cannot nimbly and freely adjust front connector with
Docking dislocation before hemisphere weldering.It when being unsatisfactory for matching requirements, also needs to ressemble, not only increases operator's labor intensity, also
Assembly efficiency is reduced, assembling quality consistency is difficult to ensure.It consults related patents to recognize, thin-wall tube-shaped element is welded and is misplaced
Inner support external pressure mode can be carried out by welding tooling control, but the reason of because of design of part difference, tubular construction part institute
Tooling and control method not can solve such end enclosure structure part end face circumferential weld dislocation problem on deformation.
Summary of the invention
For overcome the deficiencies in the prior art, the present invention provides a kind of end enclosure structure part welding dislocation control tooling and assembly
By design front head argon arc welding welding fixture, assembling function, optimizing welding process, using conjunction are adjusted using tooling for method
The assembly localization method of reason solves certain engine front head end face girth welding dislocation problem on deformation.
The technical solution adopted by the present invention to solve the technical problems is: a kind of end enclosure structure part welding dislocation control work
Dress, including compression plate, positioning body component, bushing and support rod.
The positioning body component includes mandrel, positioning body and chassis；The chassis upper surface aperture, perpendicular to chassis
Mandrel is installed；Mandrel upper end is thread segment；The positioning body is circular ring structure, is coaxially mounted on domain with mandrel, is positioned
Body upper surface is fitted closely with hemisphere inner wall shape face to be welded；The compression plate be ring structure, inner hole shape face with to
The hemisphere outer wall shape face of welding fits closely, and compression plate is mounted on chassis by several support rods, cooperates with positioning body, Gu
Determine hemisphere body position；The bushing is hollow step column, and inner hole and spindle thread cooperate, upper end outer diameter with it is to be welded before connect
Head internal diameter is identical, and lower end outer diameter is greater than front connector internal diameter, and upper end passes through front connector inner hole, cooperates with washer and fastening nut, will
Front connector is fixed in mandrel.
The compression plate external pressure hemisphere oral area type face, prevents hemisphere oral area flange.
The support rod is uniformly distributed in a ring by the center of circle of mandrel.
Be provided with several adjusting holes on the bushing, be inserted into after spanner can turn bushing, adjust bushing in mandrel
Position.
The positioning body outer wall is provided with several handle holes, being capable of turn positioning body after insertion handle.
The present invention also provides a kind of assembly methods that dislocation control tooling is welded using above-mentioned end enclosure structure part, by hemisphere
On positioning body component, hemisphere inner mold face and positioning body component positive, compression plate external pressure hemisphere oral area, compressed part
It point closes with hemisphere figure face paste close, tooling chassis and compression plate is strained and fixed hemisphere with several support rods；By bushing
The mandrel for screwing in positioning body component is threaded to be mounted on bushing with hemisphere docking location, front connector, and turn bushing adjusts hemisphere
Misplace height before the weldering of body and front connector, examines and adjusts magnitude of misalignment, and the whole circle of front connector weld bond is higher than hemisphere weld bond 0.4mm；Pressure
Upper gasket tightens fastening nut and compresses front connector, connects circumference with hemisphere along front connector and carries out tack-weld at 12.
The beneficial effects of the present invention are: front head postwelding seam deformation misplaces as shown in figure 3, most before using the present invention
Reach 0.9mm greatly, is unsatisfactory for I grade of weld seam dislocation of QJ175-93 " unimach melting welding general technical specifications " no more than 0.65mm
Standard requirements, deformation cause the variation of front head length to reach 3mm, influence that shell combination machine adds and explosive payload, yield rate are low.
After the present invention, front head clamping stability is not only improved, moreover it is possible to which dislocation is freely adjusted before realizing front head weldering
Section.Advance reservation magnitude of misalignment (verified and formulated by engineer testing) when assembly, control weld heat input input, reaches reduction welding
Misplace Amoebida.It is verified by batch Product jointing, postwelding magnitude of misalignment H control (standard requirements within 0.45mm
0.65mm), as shown in Figure 4.Front head postwelding overall length variable quantity is reduced to 1.3mm hereinafter, weldquality satisfaction is set by original 3mm
Meter requires.
Detailed description of the invention
Fig. 1 is certain engine front head structural schematic diagram；
Fig. 2 is certain engine front head argon arc welding welding clamp structure schematic diagram；
Fig. 3 is compression plate structural representation；
Fig. 4 is bush structure schematic diagram；
Fig. 5 is positioning body component structure diagram；
Fig. 6 is front head (using before tooling) welding dislocation schematic diagram；
Fig. 7 is front head (using after tooling) welding dislocation schematic diagram；
In figure, 1- front connector, 2- hemisphere, 3- handle (detachable), 4- clamp nut, 5- compression plate, 6- washer, 7- is tight
Gu nut, 8- bushing, 9- positioning body component, 10- support rod.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples, and the present invention includes but are not limited to following implementations
Example.
To achieve the purpose that control solves the dislocation deformation of engine front head structure welding, the present invention designs a kind of tooling folder
Tool, according to front head postwelding dislocation deformation rule, assembling front connector is docked with when hemisphere using tooling self structure to adjust
Certain magnitude of misalignment is reserved in dislocation before weldering, increase tack weld, is increased constraint (restraint) degree assembly localization method and is reduced postwelding dislocation deformation.
Fig. 2 be Tool clamp structure schematic diagram, mainly by handle (not influencing detachably to weld), clamp nut, compression plate,
Washer, fastening nut, positioning body component, bushing and support bar group are at 9 positioning body component of part is by mandrel, positioning body and chassis structure
At for front head assembly.8 bushing inner hole of part uses helicitic texture, is screwed in the mandrel of 7 positioning body component of part, is used in advance
It adjusts front connector and docks dislocation with hemisphere.5 compression plate pressing section of part presses hemisphere quasi spline, outside external pressure hemisphere oral area
Spheroid shape face prevents hemisphere oral area flange.10 support rod of part (quantity is 8) connector, 5 compression plate and 9 positioning body component of part
Chassis is fixed hemisphere.
When assembly, by hemisphere on positioning body component, hemisphere inner mold face and positioning body component tooling positive,
It pushes down outside compression plate away from ellipsoid outside hemisphere oral area 10mm (taking into account hemisphere figure face transitional region), pressing section and hemisphere
Type face paste is closed close, and tooling chassis and compression plate are strained and fixed hemisphere with 8 support rods, increase hemisphere constraint (restraint) degree.
Bushing is screwed on the mandrel of positioning body component, be threaded to hemisphere docking location, front connector is on the bushing, before inspection
Connector and hemisphere weld bond mated condition.Blocking bushing with special spanner, (upper surface circumferential position divides equally 90 ° and opens four adjustment
Hole) adjusting hole, 8 bushing of rotating part, adjusts hemisphere and preceding dislocation height is welded in front connector, and dedicated inspection template examines adjusting to misplace
Amount, the whole circle of front connector weld bond are higher than hemisphere weld bond 0.4mm,
After meeting matching requirements, 6 washer of piece uploading is pressed, 7 fastening nut of tightening piece compresses front connector.Circumferencial direction is by original four
Point symmetry spot welding is changed to tack-weld at 12, increases workpiece and assembles firm position degree, prevent hemisphere oral area flange, before inhibiting weldering
Dislocation deformation；Using the welding current of inclined lower range, control silk feeding quantity, reduce heat input, prevents welding dislocation deformation.
Certain model engine front head girth welding quality meets I grade standard of unimach welding technology condition, dislocation
No more than 0.63mm.By verifying, frock clamp front head test simulates the dislocation of part circumferential weld and becomes before and after 1 Statistical Comparison use of table
Shape situation.Erection welding is carried out using the welding tool setup, end socket welding dislocation deformation is effectively controlled.
Table 1 simulates part dislocation Deformation control data statistics unit mm using the test of certain engine end socket
Certain model engine XX batches of 51 hairs of front head welding, front head weld seam magnitude of misalignment H range are distributed in (0.35~0.5)
Within mm, it is all satisfied design technology index request, yield rate is increased to 98% or more.Group is welded into burning chamber shell and all passes through water
Certification test test is pressed, does not occur quality problems, product is eventually by examination.
Claims (6)
1. a kind of end enclosure structure part welding dislocation control tooling, including compression plate, positioning body component, bushing and support rod, special
Sign is: the positioning body component includes mandrel, positioning body and chassis；The chassis upper surface aperture, perpendicular to chassis
Mandrel is installed；Mandrel upper end is thread segment；The positioning body is circular ring structure, is coaxially mounted on domain with mandrel, is positioned
Body upper surface is fitted closely with hemisphere inner wall shape face to be welded；The compression plate be ring structure, inner hole shape face with to
The hemisphere outer wall shape face of welding fits closely, and compression plate is mounted on chassis by several support rods, cooperates with positioning body, Gu
Determine hemisphere body position；The bushing is hollow step column, and inner hole and spindle thread cooperate, upper end outer diameter with it is to be welded before connect
Head internal diameter is identical, and lower end outer diameter is greater than front connector internal diameter, and upper end passes through front connector inner hole, cooperates with washer and fastening nut, will
Front connector is fixed in mandrel.
2. end enclosure structure part welding dislocation control tooling according to claim 1, it is characterised in that: outside the compression plate
Hemisphere oral area type face is pressed, hemisphere oral area flange is prevented.
3. end enclosure structure part according to claim 1 welding dislocation control tooling, it is characterised in that: the support rod with
Mandrel is that the center of circle is uniformly distributed in a ring.
4. end enclosure structure part welding dislocation control tooling according to claim 1, it is characterised in that: opened on the bushing
Have several adjusting holes, be inserted into after spanner can turn bushing, adjust position of the bushing in mandrel.
5. end enclosure structure part welding dislocation control tooling according to claim 1, it is characterised in that: outside the positioning body
Wall is provided with several handle holes, being capable of turn positioning body after insertion handle.
6. a kind of assembly method for welding dislocation control tooling using end enclosure structure part described in claim 1, it is characterised in that:
Method, it is characterised in that include the following steps: by hemisphere on positioning body component, hemisphere inner mold face and positioning body component
Positive, compression plate external pressure hemisphere oral area, pressing section and hemisphere figure face paste close it is close, with several support rods by tooling
Chassis and compression plate are strained and fixed hemisphere；By bushing screw in positioning body component mandrel, be threaded to hemisphere docking location,
Front connector is on bushing, turn bushing, misplaces highly before adjusting the weldering of hemisphere and front connector, examines and adjust magnitude of misalignment, preceding
The whole circle of joint weld is higher than hemisphere weld bond 0.4mm；Upper gasket is pressed, fastening nut is tightened and compresses front connector, along front connector and half
Sphere connects circumference and carries out tack-weld at 12.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910736885.4A CN110405400A (en) | 2019-08-10 | 2019-08-10 | A kind of end enclosure structure part welding dislocation control tooling and assembly method |
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| CN201910736885.4A CN110405400A (en) | 2019-08-10 | 2019-08-10 | A kind of end enclosure structure part welding dislocation control tooling and assembly method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110883540A (en) * | 2019-11-27 | 2020-03-17 | 西安长峰机电研究所 | Welding assembly process for thin-wall spray pipe shell of engine |
| CN111168306A (en) * | 2020-02-18 | 2020-05-19 | 米伦医疗科技(苏州)有限公司 | Clamping mechanism for welding bottom of walking stick of four-foot walking aid |
| CN111687577A (en) * | 2020-06-18 | 2020-09-22 | 中国重汽集团柳州运力专用汽车有限公司 | Welding device for front cone assembly of stirring tank |
| CN112276122A (en) * | 2020-10-16 | 2021-01-29 | 上海航天精密机械研究所 | Thin-wall ellipsoidal top inner and outer circle end face composite turning device and method |
| CN113000864A (en) * | 2021-03-12 | 2021-06-22 | 哈尔滨汽轮机厂有限责任公司 | Use method of air inlet channel tool for heavy gas turbine compressor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110883540A (en) * | 2019-11-27 | 2020-03-17 | 西安长峰机电研究所 | Welding assembly process for thin-wall spray pipe shell of engine |
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| CN111168306B (en) * | 2020-02-18 | 2021-11-16 | 米伦医疗科技(苏州)有限公司 | Clamping mechanism for welding bottom of walking stick of four-foot walking aid |
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| CN112276122A (en) * | 2020-10-16 | 2021-01-29 | 上海航天精密机械研究所 | Thin-wall ellipsoidal top inner and outer circle end face composite turning device and method |
| CN112276122B (en) * | 2020-10-16 | 2022-03-18 | 上海航天精密机械研究所 | Thin-wall ellipsoidal top inner and outer circle end face composite turning device and method |
| CN113000864A (en) * | 2021-03-12 | 2021-06-22 | 哈尔滨汽轮机厂有限责任公司 | Use method of air inlet channel tool for heavy gas turbine compressor |
| CN113000864B (en) * | 2021-03-12 | 2022-08-19 | 哈尔滨汽轮机厂有限责任公司 | Use method of air inlet channel tool for heavy gas turbine compressor |
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Application publication date: 20191105 |