CN203791830U - Clamping mechanism and friction welding machine - Google Patents
Clamping mechanism and friction welding machine Download PDFInfo
- Publication number
- CN203791830U CN203791830U CN201420087539.0U CN201420087539U CN203791830U CN 203791830 U CN203791830 U CN 203791830U CN 201420087539 U CN201420087539 U CN 201420087539U CN 203791830 U CN203791830 U CN 203791830U
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- Prior art keywords
- slide block
- pivoted arm
- rolling guide
- clamp mechanism
- rotating shaft
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- 238000003466 welding Methods 0.000 title claims abstract description 30
- 238000005096 rolling process Methods 0.000 claims abstract description 72
- 230000008878 coupling Effects 0.000 claims description 22
- 238000010168 coupling process Methods 0.000 claims description 22
- 238000005859 coupling reaction Methods 0.000 claims description 22
- 238000000034 method Methods 0.000 abstract description 10
- 230000000875 corresponding effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
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Abstract
The embodiment of the utility model discloses a clamping mechanism and a friction welding machine. The clamping mechanism comprises a clamp body, a guide rail plate fixedly arranged on the clamp body, a first sliding block, a second sliding block, a first clamping block, a second clamping block, a first telescopic component, a second telescopic component, a rolling guide rail, a rolling guide rail sliding block, a first rotary arm and a second rotary arm. The other end of the first rotary arm is in shaft connection with the first sliding block, the other end of the second rotary arm is in shaft connection with the second sliding block, the rotating direction of the two ends of the first rotary arm is parallel to the end face of the rolling guide rail sliding block, the rotating direction of the two ends of the second rotary arm is parallel to the end face of the rolling guide rail sliding block, and the first rotary arm and the second rotary arm are arranged symmetric about the central line of a work station. According to the clamping mechanism, the stability of the central line of the work station can be guaranteed no matter whether the first sliding block and the second sliding block are close to each other or away from each other, and therefore the precision of the clamping mechanism in the dynamic clamping process is obviously improved, and then the welding precision of the friction welding machine is improved.
Description
Technical field
The utility model relates to welding technology field, more particularly, relates to a kind of clamp mechanism and friction welding machine.
Background technology
Friction-welding machine utilizes the mutual fricative heat of weldment end face to make it to reach mecystasis, and then upset completes the equipment of welding.
Friction welding is in the past all that to weld blank part be main, after having welded, carries out fine finishining, and now a lot of industries are not content with rough machined present situation, requires the part after fine finishining to weld, and postwelding no longer carries out fine finishining, directly reaches instructions for use.But, existing friction welding machine is in friction welding process, because axially loaded and the radial force of weldment are all very large, the power being subject in friction-welding machine movable clamp friction welding process is very large, the dynamic clamp precision of corresponding clamp mechanism is unstable, there is gap in self-centering structure, thereby causes welding precision unstable, and can not reach above-mentioned requirements.
Therefore, how to improve the welding precision of friction welding machine, become those skilled in the art's technical problem urgently to be resolved hurrily.
Utility model content
In view of this, first object of the present utility model is to provide a kind of clamp mechanism, to realize the object that improves welding precision; Second object of the present utility model is to provide a kind of friction welding machine.
For realizing above-mentioned first object, the utility model provides following technical scheme:
A kind of clamp mechanism, comprises clamp body and is fixed on the guide-rail plate on described clamp body, also comprises:
Be symmetricly set on the first slide block and the second slide block on described guide-rail plate, described the first slide block and described the second slide block and described guide-rail plate are slidably matched;
Be arranged on the first fixture block on described the first slide block, be arranged on the second fixture block on described the second slide block, described the first fixture block and described the second fixture block form the station of clamping work pieces;
Its stiff end is all fixed on the first extensible member and the second extensible member on described clamp body, and the telescopic end of described the first extensible member is fixed on described the first slide block, and the telescopic end of described the second extensible member is fixed on described the second slide block;
Be arranged on the rolling guide on described clamp body, described in be rolled into the axis of guide rail and the center line of described station is parallel; With
The rolling guide slide block being slidably matched with described rolling guide, described rolling guide slide block is connected with the first pivoted arm and the second pivoted arm, the other end of described the first pivoted arm and described the first slide block are coupling, the other end of described the second pivoted arm and described the second slide block are coupling, the direction of rotation at described the first pivoted arm two ends is parallel with the end face of described rolling guide slide block, the direction of rotation at described the second pivoted arm two ends is parallel with the end face of described rolling guide slide block, and described the first pivoted arm and described the second pivoted arm are symmetrical arranged about the center line of described station.
Preferably, in above-mentioned clamp mechanism, the other end of described the first pivoted arm is coupling by the first Connection Block and described the first slide block, and the other end of described the second pivoted arm is coupling by the second Connection Block and described the second slide block.
Preferably, in above-mentioned clamp mechanism, described the first pivoted arm is near first rotating hole that is provided with of one end of described the first Connection Block, described the first pivoted arm is provided with the second rotating hole near described rolling guide slide block, on described the first Connection Block, be provided with the first installing hole matching with described the first rotating hole, on described the first rotating hole and described the first installing hole, be provided with the first rotating shaft, described rolling guide slide block is provided with the second installing hole matching with described the second rotating hole, on described the second rotating hole and described the second installing hole, is provided with the second rotating shaft.
Preferably, in above-mentioned clamp mechanism, between described the first rotating shaft and described the first installing hole and/or between described the first rotating shaft and described the first rotating hole, be provided with the first rolling bearing, between described the second rotating shaft and described the second installing hole and/or between described the second rotating shaft and described the second rotating hole, be provided with the second rolling bearing.
Preferably, in above-mentioned clamp mechanism, described the second pivoted arm is near the 3rd rotating hole that is provided with of one end of described the second Connection Block, described the second pivoted arm is provided with the 4th rotating hole near described rolling guide slide block, on described the second Connection Block, be provided with the 3rd installing hole matching with described the 3rd rotating hole, on described the 3rd rotating hole and described the 3rd installing hole, be provided with the 3rd rotating shaft, described rolling guide slide block is provided with the 4th installing hole matching with described the 4th rotating hole, on described the 4th rotating hole and described the 4th installing hole, is provided with the 4th rotating shaft.
Preferably, in above-mentioned clamp mechanism, between described the 3rd rotating shaft and described the 3rd installing hole and/or between described the 3rd rotating shaft and described the 3rd rotating hole, be provided with the first rolling bearing, between described the 4th rotating shaft and described the 4th installing hole and/or between described the 4th rotating shaft and described the 4th rotating hole, be provided with the second rolling bearing.
Preferably, in above-mentioned clamp mechanism, described rolling guide slide block comprises fixed part and sliding part, and described fixed part is fixedly linked by bolt and described sliding part, described fixed part and described the first pivoted arm and described the second pivoted arm are coupling, and described sliding part and described rolling guide are slidably matched.
Preferably, in above-mentioned clamp mechanism, described sliding part is provided with rolling element with the position that described rolling guide matches.
Preferably, in above-mentioned clamp mechanism, described the first extensible member and described the second extensible member are telescopic oil cylinder.
Can find out from such scheme, the clamp mechanism of the utility model embodiment is in the time of needs clamping work pieces, the telescopic end of the first extensible member and the telescopic end of the second extensible member drive the first slide block and the second slide block to mutually away from direction move, thereby drive the first fixture block and the second fixture block to mutually away from direction move, workpiece is placed between the first fixture block and the station of the second fixture block, now, the telescopic end of the telescopic end of the second extensible member and the second extensible member drives the first slide block and the second slide block to move to mutual close direction, simultaneously, the first fixture block and the second fixture block move to mutual close direction, finally realize the object of clamping work pieces, when needs can be with reference to said process by workpiece taking-up.
In said process, when the first slide block and the second slide block are when close direction moves mutually, if the first slide block or the second slide block have a side stressed excessive, due to the first slide block and the second slide block respectively with being coupling of the first pivoted arm and the second pivoted arm, and rolling guide slide block can move on rolling guide, the first pivoted arm is identical with the movement locus of the second pivoted arm, even if the first pivoted arm exists different with the stressed size of the second pivoted arm, but there is at one time identical movement locus due to the first pivoted arm and the second pivoted arm, finally realize the displacement of slide block corresponding to same time on guide-rail plate identical.Again, the first pivoted arm and the second pivoted arm are arranged symmetrically with about the center line of station, and in the time of clamping work pieces, the center line of workpiece can overlap with the center line of station.When the first slide block and the second slide block to mutually away from direction while moving, can be with reference to foregoing, from above-mentioned discussion, clamp mechanism in the utility model embodiment no matter the first slide block and the second slide block mutually near or mutually away from the stability of center line that can both ensure station, thereby the precision when improving significantly it and dynamically clamping, and then improve the welding precision of friction welding machine.
In order to realize above-mentioned second object, the invention also discloses a kind of friction welding machine, comprise workbench, rotary main shaft and clamp mechanism, described clamp mechanism is arranged on described workbench, and relative with described rotary main shaft, described clamp mechanism is the clamp mechanism described in above-mentioned any one technical scheme.Because above-mentioned clamp mechanism has above-mentioned effect, therefore, this friction welding machine has corresponding effect.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The main TV structure schematic diagram of a kind of clamp mechanism that Fig. 1 provides for the utility model embodiment;
The plan structure schematic diagram of a kind of clamp mechanism that Fig. 2 provides for the utility model embodiment;
The side-looking structural representation of a kind of clamp mechanism that Fig. 3 provides for the utility model embodiment.
In Fig. 1 to Fig. 3:
1 is that clamp body, 2 is that the first extensible member, 3 is that the second extensible member, 4 is that the first slide block, 5 is that the second slide block, 6 is that the first fixture block, 7 is that the second fixture block, 8 is that guide-rail plate, 9 is that rolling guide slide block, 10 is that the first pivoted arm, 11 is that the second pivoted arm, 12 is that the first Connection Block, 13 is that the second Connection Block, 14 is that the first rotating shaft, 15 is that the second rotating shaft, 16 is that the 3rd rotating shaft, 17 is that the 4th rotating shaft, 18 is that rolling guide, 19 is that the first rolling bearing, 20 is the second rolling bearing;
91 is that fixed part, 92 is sliding part;
100 is that clamp mechanism, 200 is that rotary main shaft, 300 is that workpiece, 400 is workpiece.
Detailed description of the invention
For this reason, the utility model core is open a kind of clamp mechanism 100, to realize the object that improves welding precision.Below, with reference to accompanying drawing, embodiment is described.In addition the utility model content that the embodiment shown in, does not record claim plays any restriction effect.The solution of the utility model that in addition,, the full content of the represented formation of embodiment is not limited to record as claim is necessary.
As shown in Figure 1 to Figure 3, this clamp mechanism 100, comprises clamp body 1 and is fixed on the guide-rail plate 8 on clamp body 1, also comprises:
Be symmetricly set on the first slide block 4 on guide-rail plate 8 and the second slide block 5, the first slide blocks 4 and the second slide block 5 is slidably matched with guide-rail plate 8;
Be arranged on the first fixture block 6 on the first slide block 4, be arranged on the second fixture block 7, the first fixture blocks 6 on the second slide block 5 and the second fixture block 7 and form the station of clamping work pieces 400;
Its stiff end is all fixed on the first extensible member 2 on clamp body 1 and the telescopic end of the second extensible member 3, the first extensible members 2 is fixed on the first slide block 4, and the telescopic end of the second extensible member 3 is fixed on the second slide block 5;
Be arranged on the rolling guide 18 on clamp body 1, be rolled into the axis of guide rail and the center line of station is parallel; With
The rolling guide slide block 9 being slidably matched with rolling guide 18, rolling guide slide block 9 is connected with the first pivoted arm 10 and the second pivoted arm 11, the other end of the first pivoted arm 10 and the first slide block 4 are coupling, the other end of the second pivoted arm 11 and the second slide block 5 are coupling, the direction of rotation at the first pivoted arm 10 two ends is parallel with the end face of rolling guide slide block 9, the direction of rotation at the second pivoted arm 11 two ends is parallel with the end face of rolling guide slide block 9, and the first pivoted arm 10 and the second pivoted arm 11 are symmetrical arranged about the center line of station.
The clamp mechanism 100 of the utility model embodiment is in the time of needs clamping work pieces 400, the telescopic end of the first extensible member 2 and the telescopic end of the second extensible member 3 drive the first slide block 4 and the second slide block 5 to mutually away from direction move, thereby drive the first fixture block 6 and the second fixture block 7 to mutually away from direction move, workpiece 400 is placed between the first fixture block 6 and the station of the second fixture block 7, now, the telescopic end of the telescopic end of the second extensible member 3 and the second extensible member 3 drives the first slide block 4 and the second slide block 5 to move to mutual close direction, simultaneously, the first fixture block 6 and the second fixture block 7 move to mutual close direction, finally realize the object of clamping work pieces 400, when needs can be with reference to said process by workpiece 400 taking-ups.
In said process, when the first slide block 4 and the second slide block 5 are when close direction moves mutually, if the first slide block 4 or the second slide block 5 have a side stressed excessive, due to the first slide block 4 and the second slide block 5 respectively with being coupling of the first pivoted arm 10 and the second pivoted arm 11, and rolling guide slide block 9 can move on rolling guide 18, the first pivoted arm 10 is identical with the movement locus of the second pivoted arm 11, even if the first pivoted arm 10 exists different with the stressed size of the second pivoted arm 11, but there is at one time identical movement locus due to the first pivoted arm 10 and the second pivoted arm 11, finally realize the displacement of slide block corresponding to same time on guide-rail plate 8 identical.Again, the first pivoted arm 10 and the second pivoted arm 11 are arranged symmetrically with about the center line of station, and in the time of clamping work pieces 400, the center line of workpiece 400 can overlap with the center line of station.When the first slide block 4 and the second slide block 5 to mutually away from direction while moving, can be with reference to foregoing, from above-mentioned discussion, clamp mechanism in the utility model embodiment 100 no matter the first slide block 4 and the second slide block 5 mutually near or mutually away from the stability of center line that can both ensure station, thereby the precision when improving significantly it and dynamically clamping, and then improve the welding precision of friction welding machine.
Wherein, the first pivoted arm 10 can directly be coupling and can also be coupling by the parts that are arranged on the first slide block 4 with the first slide block 4, in like manner, the second pivoted arm 11 can directly be coupling and can also be coupling by the parts that are arranged on the second slide block 5 with the second slide block 5, in the utility model embodiment, the other end of the first pivoted arm 10 is coupling by the first Connection Block 12 and the first slide block 4, and the other end of the second pivoted arm 11 is coupling by the second Connection Block 13 and the second slide block 5.
Wherein, the form being coupling has a lot, the concrete wherein one of introducing in the utility model embodiment, the first pivoted arm 10 is near first rotating hole that is provided with of one end of the first Connection Block 12, the first pivoted arm 10 is provided with the second rotating hole near rolling guide slide block 9, on the first Connection Block 12, be provided with the first installing hole matching with the first rotating hole, on the first rotating hole and the first installing hole, be provided with the first rotating shaft 14, rolling guide slide block 9 is provided with the second installing hole matching with the second rotating hole, is provided with the second rotating shaft 15 on the second rotating hole and the second installing hole.
In order to ensure the precision in its rotation process, between the first rotating shaft 14 and the first installing hole and/or between the first rotating shaft 14 and the first rotating hole, be provided with between the first rolling bearing 19, the second rotating shafts 15 and the second installing hole and/or be provided with the second rolling bearing 20 between the second rotating shaft 15 and the second rotating hole.
The second pivoted arm 11 is near the 3rd rotating hole that is provided with of one end of the second Connection Block 13, the second pivoted arm 11 is provided with the 4th rotating hole near rolling guide slide block 9, in order to ensure the precision in its rotation process, on the second Connection Block 13, be provided with the 3rd installing hole matching with the 3rd rotating hole, on the 3rd rotating hole and the 3rd installing hole, be provided with the 3rd rotating shaft 16, rolling guide slide block 9 is provided with the 4th installing hole matching with the 4th rotating hole, on the 4th rotating hole and the 4th installing hole, is provided with the 4th rotating shaft 17.
Between the 3rd rotating shaft 16 and the 3rd installing hole and/or between the 3rd rotating shaft 16 and the 3rd rotating hole, be provided with between the first rolling bearing 19, the four rotating shafts 17 and the 4th installing hole and/or between the 4th rotating shaft 17 and the 4th rotating hole and be provided with the second rolling bearing 20.
Above-mentioned rolling guide slide block 9 can also be split-type structural for integral type structure, wherein in the time being split-type structural, rolling guide slide block 9 comprises fixed part 91 and sliding part 92, fixed part 91 is fixedly linked by bolt and sliding part 92, fixed part 91 and the first pivoted arm 10 and the second pivoted arm 11 are coupling, and sliding part 92 is slidably matched with rolling guide 18.
In order to reduce the frictional force between sliding part 92 and rolling guide 18, sliding part 92 is provided with rolling element with the position that rolling guide 18 matches.On this rolling element, add pretightning force simultaneously, ensure that the connecting rod lazy-tongs of grip device there will not be gap, in the process of the welding work pieces application of force, can not cause the centering error of fixture, ensure that this rolling guide slide block 9 can move linearly along rolling guide 18.
In the utility model embodiment, the first extensible member 2 and the second extensible member 3 are the structure that telescopic oil cylinder, telescopic cylinder etc. have Telescopic.
The invention also discloses a kind of friction welding machine, as shown in Figure 2, comprise workbench, rotary main shaft 200 and clamp mechanism 100, clamp mechanism 100 is arranged on workbench, and relative with rotary main shaft 200, clamp mechanism 100 is the clamp mechanism 100 of above-mentioned any one technical scheme.Wherein, above-mentioned rotary main shaft 200 drives workpiece 300 High Rotation Speeds, and this clamp mechanism 100 is for clamping work pieces 400.Because above-mentioned clamp mechanism 100 has above-mentioned effect, therefore, this friction welding machine has corresponding effect, repeats no more herein.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiment, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a clamp mechanism, comprises clamp body and is fixed on the guide-rail plate on described clamp body, it is characterized in that, also comprises:
Be symmetricly set on the first slide block and the second slide block on described guide-rail plate, described the first slide block and described the second slide block and described guide-rail plate are slidably matched;
Be arranged on the first fixture block on described the first slide block, be arranged on the second fixture block on described the second slide block, described the first fixture block and described the second fixture block form the station of clamping work pieces;
Its stiff end is all fixed on the first extensible member and the second extensible member on described clamp body, and the telescopic end of described the first extensible member is fixed on described the first slide block, and the telescopic end of described the second extensible member is fixed on described the second slide block;
Be arranged on the rolling guide on described clamp body, the axis of described rolling guide is parallel with the center line of described station; With
The rolling guide slide block being slidably matched with described rolling guide, described rolling guide slide block is connected with the first pivoted arm and the second pivoted arm, the other end of described the first pivoted arm and described the first slide block are coupling, the other end of described the second pivoted arm and described the second slide block are coupling, the direction of rotation at described the first pivoted arm two ends is parallel with the end face of described rolling guide slide block, the direction of rotation at described the second pivoted arm two ends is parallel with the end face of described rolling guide slide block, and described the first pivoted arm and described the second pivoted arm are symmetrical arranged about the center line of described station.
2. clamp mechanism as claimed in claim 1, is characterized in that, the other end of described the first pivoted arm is coupling by the first Connection Block and described the first slide block, and the other end of described the second pivoted arm is coupling by the second Connection Block and described the second slide block.
3. clamp mechanism as claimed in claim 2, it is characterized in that, described the first pivoted arm is near first rotating hole that is provided with of one end of described the first Connection Block, described the first pivoted arm is provided with the second rotating hole near described rolling guide slide block, on described the first Connection Block, be provided with the first installing hole matching with described the first rotating hole, on described the first rotating hole and described the first installing hole, be provided with the first rotating shaft, described rolling guide slide block is provided with the second installing hole matching with described the second rotating hole, on described the second rotating hole and described the second installing hole, be provided with the second rotating shaft.
4. clamp mechanism as claimed in claim 3, it is characterized in that, between described the first rotating shaft and described the first installing hole and/or between described the first rotating shaft and described the first rotating hole, be provided with the first rolling bearing, between described the second rotating shaft and described the second installing hole and/or between described the second rotating shaft and described the second rotating hole, be provided with the second rolling bearing.
5. clamp mechanism as claimed in claim 4, it is characterized in that, described the second pivoted arm is near the 3rd rotating hole that is provided with of one end of described the second Connection Block, described the second pivoted arm is provided with the 4th rotating hole near described rolling guide slide block, on described the second Connection Block, be provided with the 3rd installing hole matching with described the 3rd rotating hole, on described the 3rd rotating hole and described the 3rd installing hole, be provided with the 3rd rotating shaft, described rolling guide slide block is provided with the 4th installing hole matching with described the 4th rotating hole, on described the 4th rotating hole and described the 4th installing hole, be provided with the 4th rotating shaft.
6. clamp mechanism as claimed in claim 5, it is characterized in that, between described the 3rd rotating shaft and described the 3rd installing hole and/or between described the 3rd rotating shaft and described the 3rd rotating hole, be provided with the first rolling bearing, between described the 4th rotating shaft and described the 4th installing hole and/or between described the 4th rotating shaft and described the 4th rotating hole, be provided with the second rolling bearing.
7. clamp mechanism as claimed in claim 6, it is characterized in that, described rolling guide slide block comprises fixed part and sliding part, described fixed part is fixedly linked by bolt and described sliding part, described fixed part and described the first pivoted arm and described the second pivoted arm are coupling, and described sliding part and described rolling guide are slidably matched.
8. clamp mechanism as claimed in claim 7, is characterized in that, described sliding part is provided with rolling element with the position that described rolling guide matches.
9. clamp mechanism as claimed in claim 1, is characterized in that, described the first extensible member and described the second extensible member are telescopic oil cylinder.
10. a friction welding machine, comprise workbench, rotary main shaft and clamp mechanism, described clamp mechanism is arranged on described workbench, and relative with described rotary main shaft, it is characterized in that, described clamp mechanism is the clamp mechanism described in any one in claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420087539.0U CN203791830U (en) | 2014-02-27 | 2014-02-27 | Clamping mechanism and friction welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420087539.0U CN203791830U (en) | 2014-02-27 | 2014-02-27 | Clamping mechanism and friction welding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203791830U true CN203791830U (en) | 2014-08-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420087539.0U Expired - Fee Related CN203791830U (en) | 2014-02-27 | 2014-02-27 | Clamping mechanism and friction welding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203791830U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104759750A (en) * | 2015-04-02 | 2015-07-08 | 东北大学 | Annular weld join type agitating frictional welding mechanism for pipeline steel |
| CN106513982A (en) * | 2016-12-15 | 2017-03-22 | 济南沃德汽车零部件有限公司 | Clamping device of friction welding machine |
-
2014
- 2014-02-27 CN CN201420087539.0U patent/CN203791830U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104759750A (en) * | 2015-04-02 | 2015-07-08 | 东北大学 | Annular weld join type agitating frictional welding mechanism for pipeline steel |
| CN106513982A (en) * | 2016-12-15 | 2017-03-22 | 济南沃德汽车零部件有限公司 | Clamping device of friction welding machine |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 |