CN105538193A - Fixture and method for testing tensile property of friction taper plug welding head for lapping plate - Google Patents
Fixture and method for testing tensile property of friction taper plug welding head for lapping plate Download PDFInfo
- Publication number
- CN105538193A CN105538193A CN201610068895.1A CN201610068895A CN105538193A CN 105538193 A CN105538193 A CN 105538193A CN 201610068895 A CN201610068895 A CN 201610068895A CN 105538193 A CN105538193 A CN 105538193A
- Authority
- CN
- China
- Prior art keywords
- bolt
- plate
- cone
- cover plate
- fixture block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
-
- 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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/12—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to investigating the properties, e.g. the weldability, of materials
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a fixture and a method for testing tensile property of a friction taper plug welding head for a lapping plate. The fixture comprises an upper clamping block and a lower clamping block, wherein the upper end of the upper clamping block and the lower end of the lower clamping block are both used for being fixedly installed with a tensile testing machine; and the lower end of the upper clamping block is fastened above a cover plate of the friction taper plug welding head for the lapping plate through first bolts; the upper end of the lower clamping block is fastened below a base plate of the friction taper plug welding head for the lapping plate through second bolts, wherein the cover plate is located above the base plate, and the planes of the base plate and the cover plate are in cross intersection. By applying the fixture and the method which are disclosed by the invention, the tensile property of the friction taper plug welding head for the lapping plate can be successfully tested; and welding process and parameters can be optimized according to a tensile result, and then the quality of the friction taper plug welding head for the lapping plate is improved.
Description
Technical field
The invention belongs to Solid-State Welding technical field, relate in particular to a kind of fixture and method of testing lapping plate cone of friction plug welds tensile property.
Background technology
Cone of friction plug welding (FTPW) is the novel solid phase joining technique of one that Britain's institute of welding is sent out based on traditional spin friction unsolder, in the reparation of the underwater steel construction such as ocean platform and submarine pipeline thing, have unique advantage and application prospect.
The general principle of cone of friction plug welding adopts a kind of coniform stopper of High Rotation Speed in the blind hole processed in advance, to carry out extrusion friction under axial compressive force effect, due to the acting in conjunction of frictional heat and axial compressive force, stopper end thermoplastic material is in blind hole, final formation friction cone plug welding cell orifice welding point, the mutual superposition of multiple friction circle tapered plug cell orifice just defines friction stitch welding (FrictionStitchWelding-FSW) technical process.As a Solid-phase welding technology and recovery technique, friction stitch welding has lot of advantages, and as environmental protection, weldering speed is fast, welding residual stress and distortion is little, welding equipment integrated level is high, welding process easily is automated.
Generally speaking, friction stitch welding recovery technique is only applicable to nonpenerative submarine pipeline defect, then need to use the method for overlap joint for running through defect, be specially and will run through defect with one piece of cover plate and cover completely, with stopper, the substrate of cover plate with band defect is welded together, thus reach the object of repairing and running through defect, but it is relatively less to lapping plate cone of friction plug welding research at present, in order to reach better repairing effect, need to test the bonding strength of plug welds, mainly tensile strength, needs the special fixture of processing to test.
Summary of the invention
For the deficiencies in the prior art, the object of this invention is to provide a kind of fixture and method of testing lapping plate cone of friction plug welds tensile property, this fixture can carry out tension test to lapping plate cone of friction plug welds, thus the tensile strength of test lapping plate cone of friction plug welds.
The object of the invention is to be achieved by following technical proposals.
Test a fixture for lapping plate cone of friction plug welds tensile property, comprising: upper fixture block and lower fixture block, the upper end of described upper fixture block and the lower end of lower fixture block are all for being fixedly mounted with cupping machine; The first bolted is passed through on the cover plate of lapping plate cone of friction plug welds in the lower end of upper fixture block, the second bolted is passed through below the substrate of lapping plate cone of friction plug welds in the upper end of lower fixture block, wherein, cover plate is positioned at above substrate, and the plane of substrate and cover plate is right-angled intersection.
In technique scheme, described upper fixture block comprises: upper clamp holder and upper plate, and upper plate is positioned at above cover plate, and upper clamp holder is vertically packed in the center above upper plate, for being fixedly mounted with cupping machine; Described first bolt is symmetrically distributed in the both sides of clamp holder, and wherein, the quantity of the first bolt is 2-4, and the first bolt through upper plate and cover plate, and uses the first fastening nuts.
In technique scheme, be provided with pad between described first nut and cover plate, between the first bolt head and upper plate, be provided with pad.
In technique scheme, described first bolt distributes along cover plate length direction.
In technique scheme, described lower fixture block comprises: lower clamp holder and lower shoe, and lower shoe is positioned at below substrate, and lower clamp holder is vertically packed in the center below lower shoe, for being fixedly mounted with cupping machine; Described second bolt is symmetrically distributed in the both sides of lower clamp holder, and wherein, the quantity of the second bolt is 2-4, and the second bolt through lower shoe and substrate, and uses the second fastening nuts.
In technique scheme, be provided with pad between described second nut and substrate, between the second bolt head and lower shoe, be provided with pad.
In technique scheme, described second bolt distributes along substrate length direction.
By a method for above-mentioned fixture test lapping plate cone of friction plug welds tensile property, carry out according to following step:
Step 1, cover plate is covered the thereon that band runs through defect, the plane of substrate and cover plate is made to be right-angled intersection, carry out cone of friction plug welding with stopper to connect, cover plate is welded together with the substrate of band defect, after welding, the stopper part being exposed to cover plate outside is cut away, and cutting section is polished flat;
Step 2, with above-mentioned clamp lapping plate cone of friction plug welds, wherein, above the cover plate by the cooperation of the first bolt and the first nut the lower end of upper fixture block being fastened on lapping plate cone of friction plug welds, below the substrate by the cooperation of the second bolt and the second nut the upper end of lower fixture block being fastened on lapping plate cone of friction plug welds, after completing, the lower end of the upper end of upper fixture block and lower fixture block is installed on cupping machine, carries out tension test.
In described step 2, above the cover plate by the cooperation of the first bolt and the first nut the upper plate of upper fixture block being fastened on lapping plate cone of friction plug welds, upper clamp holder is installed on cupping machine.
In described step 2, below the substrate by the cooperation of the second bolt and the second nut the lower shoe of lower fixture block being packed in lapping plate cone of friction plug welds, lower clamp holder is installed on cupping machine.
Compared to prior art, fixture of the present invention successfully can test the tensile property of lapping plate cone of friction plug welds, according to drafting results energy optimizing welding process and parameter, thus improves the quality of lapping plate cone of friction plug welds.
Accompanying drawing explanation
Fig. 1 is the front view of the fixture of test lapping plate cone of friction plug welds tensile property of the present invention;
Fig. 2 is the top view of the fixture of test lapping plate cone of friction plug welds tensile property of the present invention;
Fig. 3 is the schematic diagram after the plug welding of lapping plate cone of friction has been welded;
Fig. 4 is that unnecessary stopper excises and schematic diagram after polishing flat by lapping plate cone of friction plug welding postwelding;
Fig. 5 be with clamp lapping plate cone of friction plug welds of the present invention after structural representation.
Wherein, 1 is lower fixture block, and 2 is the second bolt, and 3 is upper fixture block, and 4 is cover plate, and 5 is substrate, and 6 is the second nut, and 7 is the first nut, and 8 is the first bolt, and 9 is pad.
Detailed description of the invention
The domestic first set high-power FHPP/FTPW principle prototype system developed by the modern interconnection technique key lab in University Of Tianjin Tianjin for the lapping plate cone of friction plug welds tested in an embodiment of the present invention is welded and is obtained.This system by weld main shaft, hydraulic power unit and electric-control system three part form.The important technological parameters of model machine, all higher than other equipment in current open source information, is specially: maximum speed of spindle 8000rpm, maximum axial pressure 60kN, max. output torque 140Nm, equipment general power 93kW.
In the present invention, the material of upper fixture block and lower fixture block and concrete size is determined by strength check; The material of the first bolt and the second bolt and concrete size is determined by strength check; Take qualitatively the fine finishining of upper fixture block and lower fixture block size, form and position tolerance to ensure crudy.Cover plate involved in embodiments of the invention and baseplate material are X65 pipeline steel, wherein, cover plate is of a size of 110mm (length) × 50mm (wide) × 15mm (height), substrate is of a size of 110mm (length) × 50mm (wide) × 22mm (height), selects X65 pipeline steel as stopper material.
Below in conjunction with drawings and Examples, the fixture of test lapping plate cone of friction plug welds tensile property of the present invention and method are described in detail.
Embodiment 1
As shown in Fig. 1,2 and 5, a kind of fixture testing lapping plate cone of friction plug welds tensile property, comprise: upper fixture block 3 and lower fixture block 1, upper fixture block comprises: upper clamp holder and upper plate, upper plate is positioned at above cover plate 4, upper clamp holder is vertically packed in the center above upper plate, for being fixedly mounted with cupping machine; 2 the first bolts along the distribution of cover plate length direction are symmetricly set on the both sides of upper clamp holder, wherein, first bolt is through upper plate and cover plate, and use the first fastening nuts, each first bolt 8 is fastening with 2 the first nuts 7, be provided with pad between first nut of the top and cover plate, between the lower end of the first bolt head and upper plate, be provided with pad 9, prevent from damaging in stretching experiment process cover plate or on fixture block.Lower fixture block comprises: lower clamp holder and lower shoe, and lower shoe is positioned at below substrate 5, and lower clamp holder is vertically packed in the center below lower shoe, for being fixedly mounted with cupping machine; 2 the second bolts arranged along substrate length direction are symmetrically distributed in the both sides of lower clamp holder, wherein, second bolt is through lower shoe and substrate, and it is fastening with the second nut 6, each second bolt the second fastening nuts, be provided with pad between the second nut topmost and substrate, be provided with pad between the second bolt head and lower shoe, prevent damaged substrate or lower fixture block in stretching experiment process.Wherein, cover plate is positioned at above substrate, and the plane of substrate and cover plate is right-angled intersection.
By a method for above-mentioned fixture test lapping plate cone of friction plug welds tensile property, carry out according to following step:
Step 1, cover plate is covered the thereon that band runs through defect, the plane of substrate and cover plate is made to be right-angled intersection (the two is 90 °), before welding, on the cover board process consent (blind hole) in advance, ensure to be arranged on stopper on first set high-power FHPP/FTPW principle prototype system welding main tapping by careful centering link and consent on mother metal to be welded (cover plate) keeps higher axiality.Carry out cone of friction plug welding to connect, welded together by the substrate of cover plate with band defect with stopper, after having welded as shown in Figure 3, the welding parameter of lapping plate cone of friction plug welding is as shown in table 1.After welding, mother metal is taken out and then cut away with abrasive machine, and surface of test piece is processed smooth, obtain lapping plate cone of friction plug welding welding point as shown in Figure 4.
Step 2, with above-mentioned clamp lapping plate cone of friction plug welds (lapping plate cone of friction plug welding welding point), wherein, above the cover plate by the cooperation of the first bolt and the first nut the upper plate of upper fixture block being fastened on lapping plate cone of friction plug welds, upper clamp holder is installed on cupping machine.Below the substrate by the cooperation of the second bolt and the second nut the lower shoe of lower fixture block being packed in lapping plate cone of friction plug welds, lower clamp holder is installed on cupping machine.After completing, the chuck structure shown in Fig. 5 being installed on cupping machine carries out tension test.
Table 1 cone of friction plug welding welding parameter
The tensile property of lapping plate cone of friction plug welds can be judged by tension test, if stretching eventual failure on the stopper of cover plate and substrate faying face or cover plate be pulled off, illustrate that the tensile property of joint reaches requirement, welding parameter is reasonable; If stopper is extracted by entirety, illustrate that joint tensile property can not reach requirement, welding parameter is unreasonable.Stretch test result is as shown in table 2.
Table 2 stretch test result
| Specimen coding | Rotating speed/rpm | Upsetting force/kN | Tensile strength/MPa | Fracture position |
| 1 | 4000 | 30 | 324 | Stopper is pulled out |
| 2 | 5000 | 35 | 541 | Stopper |
| 3 | 6000 | 40 | 528 | Stopper |
| 4 | 7000 | 20 | 416 | Stopper is pulled out |
| 5 | 7000 | 30 | 531 | Stopper |
| 6 | 7000 | 40 | 506 | Stopper |
| 7 | 7000 | 50 | 512 | Cover plate is pulled off |
Drawn by result of the test, welding rotating speed and the tensile property of top pressure to lapping plate cone of friction plug welds have a great impact, and when rotating speed is lower, stopper is pulled out, and illustrate that stopper is not connected very well with mother metal, welding parameter is unreasonable; When rotating speed is very high, top pressure is less, stopper is also pulled out, and illustrates that such welding parameter is unreasonable equally.
The fixture of the test lapping plate cone of friction plug welds tensile property that the present invention invents and method energy Validity Test lapping plate cone of friction plug welds tensile property, use fixture and the method thereof of test lapping plate cone of friction plug welds tensile property of the present invention, deeply concrete analysis can be done to the performance of examination lapping plate cone of friction plug welds in conjunction with Analysis on Microstructure.
Above to invention has been exemplary description; should be noted that; when not departing from core of the present invention, any simple distortion, amendment or other those skilled in the art can not spend the equivalent replacement of creative work all to fall into protection scope of the present invention.
Claims (10)
1. test a fixture for lapping plate cone of friction plug welds tensile property, it is characterized in that, comprising: upper fixture block and lower fixture block, the upper end of described upper fixture block and the lower end of lower fixture block are all for being fixedly mounted with cupping machine; The first bolted is passed through on the cover plate of lapping plate cone of friction plug welds in the lower end of upper fixture block, the second bolted is passed through below the substrate of lapping plate cone of friction plug welds in the upper end of lower fixture block, wherein, cover plate is positioned at above substrate, and the plane of substrate and cover plate is right-angled intersection.
2. the fixture of test lapping plate cone of friction plug welds tensile property according to claim 1, it is characterized in that, described upper fixture block comprises: upper clamp holder and upper plate, upper plate is positioned at above cover plate, upper clamp holder is vertically packed in the center above upper plate, for being fixedly mounted with cupping machine; Described first bolt is symmetrically distributed in the both sides of clamp holder, and wherein, the quantity of the first bolt is 2-4, and the first bolt through upper plate and cover plate, and uses the first fastening nuts.
3. the fixture of test lapping plate cone of friction plug welds tensile property according to claim 2, is characterized in that, be provided with pad, be provided with pad between the first bolt head and upper plate between described first nut and cover plate.
4. the fixture of test lapping plate cone of friction plug welds tensile property according to claim 3, it is characterized in that, described first bolt distributes along cover plate length direction.
5. the fixture of test lapping plate cone of friction plug welds tensile property according to claim 4, it is characterized in that, described lower fixture block comprises: lower clamp holder and lower shoe, lower shoe is positioned at below substrate, lower clamp holder is vertically packed in the center below lower shoe, for being fixedly mounted with cupping machine; Described second bolt is symmetrically distributed in the both sides of lower clamp holder, and wherein, the quantity of the second bolt is 2-4, and the second bolt through lower shoe and substrate, and uses the second fastening nuts.
6. the fixture of test lapping plate cone of friction plug welds tensile property according to claim 5, is characterized in that, be provided with pad, be provided with pad between the second bolt head and lower shoe between described second nut and substrate.
7. the fixture of test lapping plate cone of friction plug welds tensile property according to claim 6, it is characterized in that, described second bolt distributes along substrate length direction.
8., by a method for fixture test lapping plate cone of friction plug welds tensile property described in claim 1-7 any one, it is characterized in that, carry out according to following step:
Step 1, cover plate is covered the thereon that band runs through defect, the plane of substrate and cover plate is made to be right-angled intersection, carry out cone of friction plug welding with stopper to connect, cover plate is welded together with the substrate of band defect, after welding, the stopper part being exposed to cover plate outside is cut away, and cutting section is polished flat;
Step 2, with above-mentioned clamp lapping plate cone of friction plug welds, wherein, above the cover plate by the cooperation of the first bolt and the first nut the lower end of upper fixture block being fastened on lapping plate cone of friction plug welds, below the substrate by the cooperation of the second bolt and the second nut the upper end of lower fixture block being fastened on lapping plate cone of friction plug welds, after completing, the lower end of the upper end of upper fixture block and lower fixture block is installed on cupping machine, carries out tension test.
9. the method for fixture test lapping plate cone of friction plug welds tensile property described in claim 1-7 any one according to claim 8, it is characterized in that, in described step 2, above the cover plate by the cooperation of the first bolt and the first nut the upper plate of upper fixture block being fastened on lapping plate cone of friction plug welds, upper clamp holder is installed on cupping machine, wherein, described upper fixture block comprises: upper clamp holder and upper plate, upper plate is positioned at above cover plate, upper clamp holder is vertically packed in the center above upper plate, for being fixedly mounted with cupping machine; 2-4 the first bolt along the setting of cover plate length direction is symmetrically distributed in the both sides of upper clamp holder, and the first bolt through upper plate and cover plate, and uses the first fastening nuts.
10. the method for fixture test lapping plate cone of friction plug welds tensile property described in claim 1-7 any one according to claim 8, it is characterized in that, in described step 2, below the substrate by the cooperation of the second bolt and the second nut the lower shoe of lower fixture block being packed in lapping plate cone of friction plug welds, lower clamp holder is installed on cupping machine, wherein, described lower fixture block comprises: lower clamp holder and lower shoe, lower shoe is positioned at below substrate, lower clamp holder is vertically packed in the center below lower shoe, for being fixedly mounted with cupping machine; 2-4 the second bolt along the setting of substrate length direction is symmetrically distributed in the both sides of lower clamp holder, and the second bolt through lower shoe and substrate, and uses the second fastening nuts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610068895.1A CN105538193A (en) | 2016-02-01 | 2016-02-01 | Fixture and method for testing tensile property of friction taper plug welding head for lapping plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610068895.1A CN105538193A (en) | 2016-02-01 | 2016-02-01 | Fixture and method for testing tensile property of friction taper plug welding head for lapping plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105538193A true CN105538193A (en) | 2016-05-04 |
Family
ID=55817989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610068895.1A Pending CN105538193A (en) | 2016-02-01 | 2016-02-01 | Fixture and method for testing tensile property of friction taper plug welding head for lapping plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105538193A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108871945A (en) * | 2017-05-10 | 2018-11-23 | 大族激光科技产业集团股份有限公司 | A kind of test method and fixture of plastic material sample weld strength |
| CN109030192A (en) * | 2018-07-28 | 2018-12-18 | 中国石油天然气集团有限公司 | A kind of full-scale wide plate test fixture and installation method of automatic centering |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202006001678U1 (en) * | 2006-02-01 | 2006-04-13 | Eads Deutschland Gmbh | Holder for testing the shear strength of a T-butt weld between two angled sections of a component, especially an aircraft component, has holders with clamps for each section with eyelets for the opposing pull forces |
| CN203414337U (en) * | 2013-08-20 | 2014-01-29 | 首钢总公司 | Special clamp for automobile plate welding spot cross tensile experiment |
| CN203606214U (en) * | 2013-12-11 | 2014-05-21 | 上海电力建设修造厂 | Clamping device for welded stud tensile test |
| CN103969113A (en) * | 2013-02-06 | 2014-08-06 | 上海安莱德汽车零部件有限公司 | Stretching clamp for stretching test after projection welding of screw nut |
| CN204882218U (en) * | 2015-07-15 | 2015-12-16 | 北京汽车研究总院有限公司 | Spot welding cross mechanical properties test fixture |
| CN205363680U (en) * | 2016-02-01 | 2016-07-06 | 天津大学 | Plug welding of test bridging plate cone of friction connects tensile strength's anchor clamps |
-
2016
- 2016-02-01 CN CN201610068895.1A patent/CN105538193A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202006001678U1 (en) * | 2006-02-01 | 2006-04-13 | Eads Deutschland Gmbh | Holder for testing the shear strength of a T-butt weld between two angled sections of a component, especially an aircraft component, has holders with clamps for each section with eyelets for the opposing pull forces |
| CN103969113A (en) * | 2013-02-06 | 2014-08-06 | 上海安莱德汽车零部件有限公司 | Stretching clamp for stretching test after projection welding of screw nut |
| CN203414337U (en) * | 2013-08-20 | 2014-01-29 | 首钢总公司 | Special clamp for automobile plate welding spot cross tensile experiment |
| CN203606214U (en) * | 2013-12-11 | 2014-05-21 | 上海电力建设修造厂 | Clamping device for welded stud tensile test |
| CN204882218U (en) * | 2015-07-15 | 2015-12-16 | 北京汽车研究总院有限公司 | Spot welding cross mechanical properties test fixture |
| CN205363680U (en) * | 2016-02-01 | 2016-07-06 | 天津大学 | Plug welding of test bridging plate cone of friction connects tensile strength's anchor clamps |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108871945A (en) * | 2017-05-10 | 2018-11-23 | 大族激光科技产业集团股份有限公司 | A kind of test method and fixture of plastic material sample weld strength |
| CN109030192A (en) * | 2018-07-28 | 2018-12-18 | 中国石油天然气集团有限公司 | A kind of full-scale wide plate test fixture and installation method of automatic centering |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103212778A (en) | Stirring-friction-based crack repair method | |
| CN106625220A (en) | Main shaft inner cone hole grinding clamp | |
| CN202527962U (en) | Tool for processing both ends of motor casing | |
| CN104384528B (en) | A kind of flange bearing metal cutting process technique | |
| CN205363680U (en) | Plug welding of test bridging plate cone of friction connects tensile strength's anchor clamps | |
| CN105538193A (en) | Fixture and method for testing tensile property of friction taper plug welding head for lapping plate | |
| CN204234831U (en) | A kind of cylinder block inclined hole process tool fixture | |
| CN102513684A (en) | Special welding fixture for copper aluminum tube and welding method and copper aluminum welded tube utilizing the same | |
| CN108723690B (en) | Process method for asymmetrically replacing half chord tube of main chord tube of pile leg | |
| CN109483072B (en) | Welding method and tool for shield machine spiral machine seat | |
| CN101829805B (en) | Lathe tooling equipment for turning planes | |
| CN101811263A (en) | Numerical control machining fixture device for impulse water turbine runner | |
| CN201979314U (en) | Centring body | |
| CN101524771B (en) | Ball end repairing cutter | |
| CN106425624A (en) | Quick-assembled combined mandrel | |
| CN110732904A (en) | Clamping method and device for turning side flange and flow hole of valve body by turning | |
| KR20200001776U (en) | Jig for Pipe Welding Test Piece | |
| CN106425264B (en) | The welding universal fixturing of EMU tubular beams | |
| CN112355565B (en) | Device and method for repairing hole diameter of rod body seat hole of rod end joint bearing made of aluminum alloy | |
| CN103551894B (en) | Zinc-plated sinking roller processing elastic anti-slip axle sleeve | |
| CN104148909A (en) | Manufacturing method of installed and welded type planetary component | |
| CN210938197U (en) | Milling fixture for back of guide rail bracket on launcher | |
| CN102233522A (en) | Self-centering retainer elastic clamping fixture | |
| CN102689192A (en) | Clamp for turning thin-wall conical part | |
| CN205870282U (en) | Circle grinding jig in porous steel mould |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160504 |
|
| RJ01 | Rejection of invention patent application after publication |