CN105710591A - Circular tube centering flexible clamp for magnetic pulse welding - Google Patents
Circular tube centering flexible clamp for magnetic pulse welding Download PDFInfo
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- CN105710591A CN105710591A CN201610266199.1A CN201610266199A CN105710591A CN 105710591 A CN105710591 A CN 105710591A CN 201610266199 A CN201610266199 A CN 201610266199A CN 105710591 A CN105710591 A CN 105710591A
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- jamming claw
- base
- claw
- gear
- worm
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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
- B23K37/053—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
- B23K37/0533—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 external pipe alignment clamps
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention relates to a circular tube centering flexible clamp for magnetic pulse welding. The circular tube centering flexible clamp comprises an adjusting mechanism and a workpiece fixing mechanism, wherein the adjusting mechanism comprises a base (8), a worm shaft system and a center shaft system; and the structure of the workpiece fixing mechanism is used for containing circular tube workpieces in different sizes, and the circular tube workpieces are fixed in a manner of connection through hook and loop fasteners. The invention further provides a computational formula of the adjusting distance of the circular tube workpieces, the using method of the clamp is described in detail, and the circular tube centering flexible clamp is simple, reliable and convenient to operate.
Description
Technical field
The present invention relates to a kind of pipe to heart flexible fixture, particularly to a kind of pipe for magnetic pulse welding to heart flexible fixture, belong to field of machining and machinebuilding technology.
Background technology
Along with the development of new-energy automobile, in order to tackle the requirement of automotive light weight technology, auto manufacturing gradually adopts aluminium alloy to replace tradition steel, and therefore aluminium alloy and aluminum-steel construction different-metal material welding problem become the focal issue that welding field is badly in need of solving.Due to aluminum, two kinds of metal material nature differences of steel greatly, therefore, it is difficult to weld by traditional welding method.Compared with other solder technology, magnetic pulse welding techniques has big advantage and wide application prospect in the welding of dissimilar metal.At present, this technology is applied to commercial production by external a lot of units, and domestic also in the research and extension stage, in order to promote the industrial applications of magnetic pulse welding techniques, it is necessary to the basic tooling device that design magnetic pulse welding techniques is relevant.And the frock clamp heaviness that at present magnetic pulse welding device fabrication company provides, function singleness, do not adapt to the requirement of flexible manufacturing.
Summary of the invention
It is an object of the invention to provide one and can adapt to the clamping of various sizes of pipe fitting, and then realize the frock of flexible manufacturing.The invention enables the using method of fixture simple and reliable, convenient operation simultaneously.
The technical scheme is that and provide a kind of pipe for magnetic pulse welding to heart flexible fixture, it is characterised in that include governor motion and workpiece fixed mechanism, wherein: described governor motion includes base, worm shaft system and central shaft system；Base is as assembly foundation；Along base width direction, installing scale in the front of base, arrange the first ladder blind hole being perpendicular to base front surface simultaneously, the first ladder blind hole open end circumference uniformly drills screwed hole, in order to install worm shaft system；Base both sides are shaped with lug, lug upper surface holes drilled through, by connector, base and workbench are fixed；Along substructure height direction, at centrally disposed second ladder hole of base top surface, the second ladder via bottoms circumference uniformly drills screwed hole, in order to install central shaft system；Cutting into inclined-plane in base corner, both sides back and forth over, base upper surface is along direction symmetry cutting two L-shaped grooves parallel with scale, in order to dispose fixed mechanism；Worm shaft system and central shaft system cooperatively form drive system；Described workpiece fixed mechanism structure is used for disposing various sizes of circular pipe workpiece, and circular pipe workpiece is fixed by the mode connected by velcro.
The beneficial effects of the present invention is: the present invention comprises two transmissions, can easily switch to coarse adjustment and fine tuning.Workpiece is fixing to be fixed by simple and reliable velcro mode, coordinates with claw and is suitable for the clamping of various sizes of pipe fitting, is suitable for flexible manufacturing.The present invention gives the computing formula of circular pipe workpiece adjustable range, describes the using method of this fixture in detail, simple and reliable, convenient operation.
Accompanying drawing explanation
Fig. 1 is pipe axis side view such as the grade (containing workpiece) to heart flexible fixture of the present invention；
Fig. 2 is that the pipe of the present invention is to the front cross-sectional of heart flexible fixture internal structure and partial sectional view (containing workpiece)；
Fig. 3 be the present invention pipe to the side of the inside primary structure of heart flexible fixture with overlook broken section view；
Fig. 4 is the 3-D view that heart flexible fixture is removed the governor motion of a part of part by the pipe of the present invention；
Fig. 5 is the pipe principle explanation figure to the adjustable range formula of heart flexible fixture of the present invention；
Fig. 6 is the job state figure that heart flexible fixture is installed on workbench by the pipe of the present invention；
Fig. 7 is the front section view that heart flexible fixture is in job state by the pipe of the present invention；
Wherein: 1-nylon velvet band, 2-left jamming claw, 3-scale, 4-magnetic zeroing pointer 5-worm screw end cap, 6-on-fixed regulates handle, 7-right jamming claw tooth bar, 8-base, 9-left jamming claw tooth bar, 10-right jamming claw, 11-circular pipe workpiece, 12-claw felt pad, 13-gear end cap, 14-plectrum, 15-central gear, 16-worm gear, 17-worm gear end cap, 18-cut spring, 19-slip mandrel, 20-sleeve pipe, (21)-worm shaft, 22-coil, 23-rubber block, 24-Linear bearing guide rail, 25-linear bearing, 26-workbench, 27-nylon hook strip.
Detailed description of the invention
For the clearer explanation embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
As it is shown in figure 1, heart flexible fixture is included governor motion and workpiece fixed mechanism by a kind of pipe for magnetic pulse welding of the present invention.
Wherein: described governor motion includes base 8, worm shaft system and central shaft system three part.
Wherein, in conjunction with Fig. 1, base 8 is as assembly foundation.Along base 8 width, installing scale 3 in the front of base 8, arrange the first ladder blind hole being perpendicular to base 8 front simultaneously, the first ladder blind hole open end circumference uniformly drills screwed hole, to install worm shaft system；Additionally, base 8 both sides are shaped with lug, lug upper surface holes drilled through, by connector, base 8 and workbench are fixed；Along substructure height direction, at centrally disposed second ladder hole of base top surface, the second ladder via bottoms circumference uniformly drills screwed hole, in order to install central shaft system；Above base 8, corner, both sides cuts into inclined-plane, base 8 upper surface along direction symmetry cutting two L-shaped grooves parallel with scale 3,.Worm shaft system and central shaft system cooperatively form drive system；
Described workpiece fixed mechanism structure is used for disposing various sizes of circular pipe workpiece, and circular pipe workpiece is fixed by the mode connected by velcro.
Wherein, as shown in the B-B partial sectional view of Fig. 2, worm shaft system includes separate type and regulates handle 6, worm screw end cap 5, worm shaft 21.
Worm shaft 21 two ends are supported by deep groove ball bearing, and are installed in the installing hole of base 8, and worm screw end cap 5 forms bolt by the hole on ring flange with base 8 and is connected, thus realizing the axial location of worm shaft system；Worm shaft 21 end face outside is shaped with square blind hole, and separate type regulates and is shaped with matched square boss on handle 6, and separate type is regulated handle 6 and inserted by the circular hole in the middle of worm screw end cap 5, coordinates with the square blind hole of worm shaft 21 end face；
Wherein, central shaft system includes worm gear end cap 17, sleeve pipe 20, cut spring 18, slip mandrel 19, worm gear 16, central gear 15, plectrum 14, gear end cap 13.
According to assembly relation from bottom to up, the flange of worm gear end cap 17 and the big end flanges limit of sleeve 20 are adjacent to coaxial cooperation in rear inserted base 8 centre bore, circumference uniformly punching on both flanges, are fixed by screws on base 8 after the alignment of hole；Installed thrust ball bearing in turbine end cap 17, thrust ball bearing upper surface and worm gear 16 lower surface snug fit, worm gear 16 upper surface and the deep groove ball bearing inner ring snug fit being arranged on inside sleeve 20 in shoulder hole, so far the parts in sleeve 20 have realized axial location all；Deep groove ball bearing inner ring in shoulder hole and central gear 15 lower surface snug fit outside sleeve 20, central gear 15 upper surface and the deep groove ball bearing inner ring snug fit being arranged in gear end cap 13, gear end cap 13 is fixed on centre bore upper surface by the circumferential hole of flange and screw, completes the axial restraint of central shaft system other end parts；Slip mandrel 19 cylindrical outer surface and the bearing inner race coaxial cooperation coordinated, and have two sections of splines, form spline with central gear 15 with worm gear 16 respectively and be connected, so that central gear 15 and worm gear 16 coaxial cooperation.Additionally, slip mandrel 19 small end contacts cooperation with the cut spring 18 being placed in turbine end cap 17, slip mandrel 19 can realize reciprocatingly sliding under spring force；Gear end cap 13 is transparent cover, and plectrum 14 (with reference to Fig. 3 top view structure) is installed in through hole side, and rotation plectrum 14 props up slip mandrel 19 and holds greatly end face can limit or allow moving axially of slip mandrel 19.
Shown in Fig. 3, described workpiece fixed mechanism mainly includes left jamming claw 2, right jamming claw 10, left jamming claw tooth bar 9, right jamming claw tooth bar 7, claw felt pad 12, magnetic zeroing pointer 4, nylon velvet band 1 and nylon hook strip 27.Wherein left jamming claw tooth bar 9 and right jamming claw tooth bar 7 are for connection to the part of governor motion and left and right claw.
Wherein, shown in Fig. 1, left jamming claw 2 and right jamming claw 10 inclined-plane are pasted claw felt pad 12 to reduce impact on weldment in magnetic pulse welding process, the back side is pasted nylon hook strip 27 and is formed velcro with fixing workpiece with nylon velvet band 1, and symmetrical inclined-plane is offered in lower end can coordinate rectilinear movement with the inclined-plane of both sides, base 8 upper end；In Fig. 3 shown in D-D sectional view, left jamming claw 2, right jamming claw 10 are shaped with the staggered cut avoided interference with, two claws can be drawn close further, left jamming claw 2 is connected by screw is fixing with left jamming claw tooth bar 9, right jamming claw 10 is same with right jamming claw tooth bar 7 type of attachment, the L bossing of claw lower end, left and right coordinates with the L-shaped groove on base 8, left jamming claw 2 and right jamming claw 10 also offer the moving track making tooth bar pass through, has therefore fixed and connect and be arranged on base 8 upper clipping claw rack combination parts and can only move linearly along groove；For another example in Fig. 3 shown in partial enlarged view C; left jamming claw tooth bar 9 and right jamming claw tooth bar 7 can only along moving track rectilinear motions; and form rack-and-pinion with central gear 15 and coordinate; when center pinion rotation; both sides tooth bar moves linearly along relative direction, thus driving the left jamming claw 2 being connected and right jamming claw 10 to draw close or separate.
Wherein, nylon hook strip 27 is pasted by seccotine in the back side of left jamming claw 2 and right jamming claw 10, adopts wider nylon velvet band 1 and nylon hook strip 27 to form velcro and connects, can form the connection of higher-strength.After governor motion completes adjustment, circular pipe workpiece 11 is placed in left jamming claw 2 and on V-type placement surface that right jamming claw 10 forms, again nylon velvet is sticked in the nylon hook strip 27 at the claw back side, side with 1 one end, push down workpiece after tension to stick to and the nylon hook strip 27 at the opposite side claw back side can realize workpiece fix, Fig. 1 illustrate workpiece fixing after fixture.
Wherein, then as it is shown in figure 1, magnetic zeroing pointer 4 has magnetic, when regulating both sides claws and drawing close completely, the alignment scale 3 zero graduation line place pointer 4 that magnetic returned to zero is adsorbed on right jamming claw 10 side and can complete zeroing.
As shown in Figure 4, removed a part of part, embody the driving regulating mechanism within fixture more intuitively by 3 D stereo view, in conjunction with above-mentioned several figure, operation principle of the present invention described herein as
Wherein, governor motion includes two groups of transmissions, and central gear 15 and left jamming claw tooth bar 9, right jamming claw tooth bar 7 form the rack-and-pinion that transmission is smaller, for coarse adjustment；Worm screw 21 and worm gear 16 form the worm couple that transmission is relatively larger, for fine tuning；Plectrum 14 and cut spring 18 form switching mechanism, changeable coarse adjustment and fine mode；During coarse adjustment, stir plectrum 14 and leave slip mandrel 19 upper surface, slip mandrel 19 moves up under the elastic force of cut spring 18, wherein one section of spline is no longer coordinated with worm gear, and another section of spline still coordinates with gear, now mechanism does not have auto-lock function, it is possible to quickly promotes two claws to arrive and specifies position；During fine tuning, pressing slip mandrel 19 overcomes the elastic force of cut spring 18 to move down, stir plectrum 14 and block slip mandrel 19 upper surface, spline and worm gear recompounding, another section of spline coordinates with gear all the time, now can rotate on-fixed adjustment handle 6 and finely regulate two claws arrival accurate location (this position fixes on following being described in detail really)；Additionally, due to worm couple has auto-lock function, extracting on-fixed and regulate handle 6 after completing fine tuning, both sides claw does not just have relative movement under external force, can be fixed step；Fixing workpiece have employed simple efficient velcro mode, this connected mode is also realize the key component that flexibility adapts to, after completing location adjustment, circular pipe workpiece 11 is placed in left jamming claw 2 and on V-type face that right jamming claw 10 forms, again nylon velvet is sticked in the nylon hook strip 27 at the claw back side, side with 1 one end, push down workpiece after tension and stick to and the nylon hook strip 27 at the opposite side claw back side can realize workpiece fix.
As shown in Figure 5, being described herein the defining method of adjusting position, in order to form good welding, it is accurate that two docking pipe fittings need the heart, the present invention by regulate pipe center of circle height realize different pipe fitting Z-direction to the heart, X to the heart is realized by following workbench and linear bearing.Give the computing formula to heart height H Yu adjustable range d herein.
First according to trigonometric function relation, can obtain
C=[(H-A)-R arcsina] tana (1)
Can be tried to achieve given to the adjustable range under heart height again by d=b-c
D=b-[(H-A)-R arcsina] tana (2)
Formula (2) can simplify by certain required precision after substituting into concrete numerical value further, it is simple to factory work.
Wherein: a-claw frustoconical bevel angle b-needle locating distance d-adjustable range, R-tube outer diameter, H-pipe fitting is to heart height, the auxiliary dimension of A, c-calculation specifications.
As shown in Figure 6, when heart flexible fixture is used for operation by a kind of pipe for magnetic pulse welding of the present invention, need more than two fixtures, it is respectively arranged in coil 22 both sides, on workbench 26, it is respectively arranged two Linear bearing guide rails 24 simultaneously, due to the present invention in order to clamp structure is simple, mainly realize short transverse to the heart, coordinate realize so laterally the heart being required over precision higher linear bearing 25；Additionally, when needs carry out long pipe fittings welding, more than two fixtures can be arranged in both sides.
As it is shown in fig. 7, further illustrated duty and the installation site of fixture by cross section view.Fixture both sides are each fixes a linear bearing 25, because fixture can move freely on track, when moving to correct position, moves by coordinating tight rubber block 23 can limit fixture with Linear bearing guide rail 24.
In use, first coil 22 center height to work surface should be obtained, according to clamp structure size thus obtaining heart height H, adjustable range d can be obtained according to tube outer diameter size R through type (2) to be welded, it should be noted here that, for given to heart height H, the adjustable range d that various sizes of pipe fitting is corresponding is different；Obtaining after adjustable range and can return to zero, as long as moving left jamming claw 2 and right jamming claw 10 to being adjacent to, the pointer 4 that then magnetic returned to zero aligns scale 3 zero graduation line, is adsorbed on right jamming claw 10；Then stir plectrum 14 and leave slip mandrel 19, coarse mode is switched to by cut spring 18, arrive with hand push both sides claw and postpone close to specific bit, press slip mandrel 19, stir plectrum 14 and block slip mandrel 19, switching to fine mode, extract on-fixed handle 6 after completing adjustment, now mechanism makes claw position because of self-locking；After completing distance adjustment, laying pipe fitting on the V-type face of both sides claw composition, finally tension velcro is with fixing pipe fitting.
The invention is not restricted to application above, various possible amendments are in the scope of dependent claims, and other amendment for above-mentioned detailed description of the invention can also be manufactured simultaneously.Accordingly, it would be desirable to it is realized that the invention is not restricted to disclosed detailed description of the invention and be intended to include in the appended claims with its amendment and other embodiment.Although employ concrete term at this, but they solely be used in unrestriced purpose in general and narration situation.
Claims (5)
1. the pipe being used for magnetic pulse welding is to heart flexible fixture, it is characterised in that include governor motion and workpiece fixed mechanism, wherein: described governor motion includes base (8), worm shaft system and central shaft system；Base (8) is as assembly foundation；Along base (8) width, scale (3) is installed in the front of base (8), arranging the first ladder blind hole being perpendicular to base (8) front, the first ladder blind hole open end circumference uniformly drills screwed hole, in order to install worm shaft system simultaneously；Base (8) both sides are shaped with lug, lug upper surface holes drilled through, by connector, base (8) and workbench are fixed；Along substructure height direction, at centrally disposed second ladder hole of base top surface, the second ladder via bottoms circumference uniformly drills screwed hole, in order to install central shaft system；Cutting into inclined-plane in base (8) corner, both sides back and forth over, base (8) upper surface is along direction symmetry cutting two L-shaped grooves parallel with scale (3), in order to dispose fixed mechanism；Worm shaft system and central shaft system cooperatively form drive system；Described workpiece fixed mechanism structure is used for disposing various sizes of circular pipe workpiece, and circular pipe workpiece is fixed by the mode connected by velcro.
2. the pipe for magnetic pulse welding according to claim 1 is to heart flexible fixture, it is characterised in that: worm shaft system includes separate type and regulates handle (6), worm screw end cap (5), worm shaft (21)；Worm shaft (21) two ends are supported by deep groove ball bearing, and it is installed in the first ladder blind hole of base (8), worm screw end cap (5) forms bolt by the hole on ring flange with base (8) and is connected, thus realizing the axial location of worm shaft system；Worm shaft (21) end face outside is shaped with square blind hole, separate type regulates and is shaped with matched square boss on handle (6), separate type is regulated handle (6) and is inserted by the circular hole in the middle of worm screw end cap (5), coordinates with the square blind hole of worm shaft (21) end face.
3. the pipe for magnetic pulse welding according to claim 2 is to heart flexible fixture, it is characterised in that: central shaft system include worm gear end cap (17), sleeve pipe (20, cut spring (18), slip mandrel (19), worm gear ((16), central gear (15), plectrum (14), gear end cap (13)；
Wherein, (20 big end flanges limits are adjacent to coaxial cooperation in rear inserted base (8) centre bore to the flange of worm gear end cap (17) with sleeve；The interior installed thrust ball bearing of turbine end cap (17), thrust ball bearing upper surface and worm gear (16) lower surface snug fit, worm gear (16) upper surface coordinates with the deep groove ball bearing inner ring being arranged on sleeve (20) inner side the second ladder hole, deep groove ball bearing inner ring in shoulder hole and central gear (15) lower surface snug fit outside sleeve (20), central gear (15) upper surface and the deep groove ball bearing inner ring snug fit being arranged in gear end cap (13), gear end cap (13) is fixed on centre bore upper surface by the circumferential hole of flange and screw, complete the axial restraint of central shaft system other end parts；Slip mandrel (19) cylindrical outer surface and the bearing inner race coaxial cooperation coordinated, and have two sections of splines, form spline with central gear (15) with worm gear (16) respectively to be connected, so that central gear (15) and worm gear (16) coaxial cooperation.Additionally, slip mandrel (19) small end contacts cooperation with the cut spring (18) being placed in turbine end cap (17), slip mandrel (19) realizes reciprocatingly sliding under spring force；Gear end cap (13) is transparent cover, and plectrum (14) is installed in through hole side, and rotation plectrum (14) props up slip mandrel (19) end end face greatly can limit or allow moving axially of slip mandrel (19).
4. the pipe for magnetic pulse welding according to claim 3 is to heart flexible fixture, it is characterised in that: described workpiece fixed mechanism includes left jamming claw (2), right jamming claw (10), left jamming claw tooth bar (9), right jamming claw tooth bar (7), claw felt pad (12), nylon velvet band (1) and nylon hook strip (27)；
Wherein: left jamming claw tooth bar (9) and right jamming claw tooth bar (7) are for connection to the part of governor motion and left jamming claw (2) and right jamming claw (10)；
Left jamming claw (2) and right jamming claw (10) inclined-plane are pasted claw felt pad (12), nylon hook strip (27) is pasted at the back side of left jamming claw (2) and right jamming claw (10) and nylon velvet band (1) formation velcro is offered symmetrical inclined-plane with fixing workpiece, left jamming claw (2) and right jamming claw (10) lower end and coordinated rectilinear movement with the inclined-plane of both sides before and after base (8)；Left jamming claw (2) is fixing with left jamming claw tooth bar (9) to be connected, right jamming claw (10) is fixing with right jamming claw tooth bar (7) to be connected, the L-shaped bossing of left jamming claw (2) and right jamming claw (10) lower end coordinates with the L-shaped groove on base (8), left jamming claw tooth bar (9) and right jamming claw tooth bar (7) are along moving track rectilinear motion, and coordinate with central gear (15) formation rack-and-pinion, when center pinion rotation, left jamming claw tooth bar (9) and right jamming claw tooth bar (7) move linearly along relative direction, thus driving the left jamming claw (2) being connected and right jamming claw (10) to draw close or separate.
5. the pipe for magnetic pulse welding according to claim 4 is to heart flexible fixture, it is characterised in that:
Wherein, nylon hook strip (27) is pasted by seccotine in the back side of left jamming claw (2) and right jamming claw (10), adopt wider nylon velvet band (1) and nylon hook strip (27) to form velcro to connect, after governor motion completes adjustment, circular pipe workpiece (11) is placed in left jamming claw (2) and on V-type placement surface that right jamming claw (10) forms, again nylon velvet band (1) one end is sticked in the nylon hook strip (27) at the claw back side, side, push down workpiece after tension to stick to and namely the nylon hook strip (27) at the opposite side claw back side is capable of workpiece fixes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610266199.1A CN105710591B (en) | 2016-04-26 | 2016-04-26 | Circular tube centering flexible clamp for magnetic pulse welding |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610266199.1A CN105710591B (en) | 2016-04-26 | 2016-04-26 | Circular tube centering flexible clamp for magnetic pulse welding |
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| Publication Number | Publication Date |
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| CN105710591A true CN105710591A (en) | 2016-06-29 |
| CN105710591B CN105710591B (en) | 2017-05-10 |
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| CN106166760A (en) * | 2016-08-30 | 2016-11-30 | 重庆市银盛模具有限公司 | Vehicle oil plastic pipe cutting machine |
| CN106378578A (en) * | 2016-11-28 | 2017-02-08 | 南京洛尧智慧信息技术有限公司 | Spot welding clamp for pipe fitting |
| CN108747151A (en) * | 2018-06-25 | 2018-11-06 | 常州市思企智能科技有限公司 | Petroleum pipeline welding equipment rack |
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| CN109434370A (en) * | 2019-01-20 | 2019-03-08 | 北京工业大学 | A kind of centralising device for magnetic field impulse Guan Yuguan welding |
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| CN110014215A (en) * | 2019-05-20 | 2019-07-16 | 福州大学 | Guan Yuguan magnetic pulse welding device and its working method |
| CN110039168A (en) * | 2019-05-24 | 2019-07-23 | 福州大学 | A kind of pipe fitting magnetic pulse welding device and method |
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