CN103042303A - Friction stir welding fixture in mechanical trigger control mode and method for controlling friction stir welding fixture - Google Patents
Friction stir welding fixture in mechanical trigger control mode and method for controlling friction stir welding fixture Download PDFInfo
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- CN103042303A CN103042303A CN2012105674980A CN201210567498A CN103042303A CN 103042303 A CN103042303 A CN 103042303A CN 2012105674980 A CN2012105674980 A CN 2012105674980A CN 201210567498 A CN201210567498 A CN 201210567498A CN 103042303 A CN103042303 A CN 103042303A
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- pressing plate
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- plate cylinder
- friction stir
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Abstract
The invention discloses a friction stir welding fixture in a mechanical trigger control mode and a method for controlling the friction stir welding fixture. The friction stir welding fixture comprises a fixture base, a control unit, a trigger element, limit switches and a plurality of pressure plates; each pressure plate is connected with a pressure plate cylinder, each pressure plate cylinder corresponds to at least one limit switch and is controlled by the corresponding limit switches, and the limit switches and the pressure plate cylinders are connected with the control unit; and the trigger element and the limit switches are matched with one another and are mounted on a friction stir welding head. The pressure plate cylinders are controlled by the mechanical trigger type limit switches and the trigger element, possibility of malfunction of the pressure plate cylinders is eliminated, the pressure plates are driven by the pressure plate cylinders to be automatically opened before the welding head moves to the pressure plates during movement, and are reset to press workpieces after the welding head passes the pressure plates, the integral fixture is automatically controlled and is reliable in running, and the cost is lowered.
Description
Technical field
The present invention is relevant with weld jig, specifically belongs to a kind of machinery for friction stir welding and triggers the control model anchor clamps, is particularly useful for polygon weld seam, closed curve weld seam or irregularly shaped etc.
Background technology
Britain's institute of welding (TWI) has been invented friction stir welding (Friction Stir Welding is called for short FSW) in 1991, this is a kind of solid phase interconnection technique of innovation, and this derives from technology relatively is applicable to the welding of long straight weld in traditional friction welding (FW).Compare with traditional fusion welding method; agitating friction welding has that weld grain is tiny, smoke dust, without splash, pore-free, the gas that do not need protection when need not scolder, welding, the postwelding workpiece stress is little and be out of shape the advantages such as little, is particularly suitable for the welding of aluminium alloy.
Friction stir welding is a kind of continuous solid phase connecting method of pure mechanization, as shown in Figure 1, in welding process, the soldering tip rotation of special shaft shoulder of cylindricality band and pin protruding (being stirring-head), stirring-head slowly inserts the place to be welded of welded piece, fricting shearing resistance between stirring-head and the materials to be welded has produced frictional heat, make material softening generation plastic deformation, when soldering tip is activated when moving forward along interface to be welded, the material of thermoplastification is shifted to the rear portion by the front portion of stirring-head, and under the forging effect of the soldering tip shaft shoulder, realize that the solid phase between the workpiece connects.
In the process of carrying out friction stir welding, workpiece need to compress with pressing plate, when the weld seam of workpiece is a polygon or closed curve or when irregularly shaped, take the rectangle weld seam as example, the square cross of one hollow is positioned at the outside of another square cross, the square cross of this hollow is called outer workpiece, and another square cross is called interior workpiece, and pressing plate need to stretch out and stride across weld seam around the outer workpiece and be pressed in and be positioned on the workpiece.When welding, what soldering tip was walked is the square track of a sealing like this, and pressing plate can block the operation of soldering tip in the soldering tip moving process, therefore needs the anchor clamps that can automatically control.At present, the opening and closing of pressing plate are mainly controlled by the pressing plate cylinder, the pressing plate cylinder is then realized control by photoelectric sensor, when stirring welding, soldering tip can produce the material that is extruded of strip, these are extruded material can cause interference to photoelectric sensor, and then causes the misoperation of pressing plate cylinder.
Summary of the invention
The machinery that technical problem to be solved by this invention provides a kind of friction stir welding triggers control model anchor clamps and control method, can eliminate the possibility that causes the misoperation of pressing plate cylinder, improves operational reliability, reduces cost.
For solving the problems of the technologies described above, the machinery of friction stir welding provided by the invention triggers the control model anchor clamps, comprise clamp base, control module, trigger element, limit switch and a plurality of pressing plate, each pressing plate is connected with a pressing plate cylinder, each pressing plate cylinder is corresponding with at least one limit switch and by the control of corresponding limit switch, and described limit switch all links to each other with control module with the pressing plate cylinder; Described trigger element and limit switch match to merge and are installed on the soldering tip of friction stir welding.
Further, what described limit switch matched with trigger element is an elastic wire, and this elastic wire is striden in welded joints, and its two ends lay respectively at the both sides of weld seam, and an end is fixed on the limit switch, and the other end is free end.Described trigger element is for promoting the push rod of elastic wire bending, and its main shaft with soldering tip is coaxial.
Wherein, described control module is PLC.
Further, the limit switch corresponding with each pressing plate cylinder is positioned at the place ahead of the pressing plate that this pressing plate cylinder controls at the running orbit of soldering tip.
Wherein, described limit switch is one, perhaps arranged side by side two or more.
The present invention also provides the machinery of described friction stir welding to trigger the control method of control model anchor clamps, comprising:
Need the inside and outside workpiece of welding to locate in clamp base, workpiece in pressing plate cylinder control pressing plate compresses;
Under the control of control module, soldering tip drives trigger element and brings into operation take a place of weld seam as starting point, trigger element touches certain limit switch on running orbit, this limit switch sends a signal to control module, described control module sends OPEN to the pressing plate cylinder corresponding with this limit switch, described pressing plate cylinder drives connected press plate rotary and makes the soldering tip process, trigger element is through behind this limit switch, described limit switch sends a signal to control module, described control module sends reset instruction to the pressing plate cylinder corresponding with this limit switch, and described pressing plate cylinder drives connected pressing plate and resets and again push down interior workpiece;
Soldering tip continues forward operation along weld seam, trigger element contacts one by one with remaining limit switch, the pressing plate cylinder band dynamic pressure plate corresponding with limit switch rotates one by one and makes the soldering tip process, until soldering tip is got back to described weld seam starting point, control module drives all pressing plate cylinders drive press plate rotaries and opens the end welding process.
Further, under the control of control module, soldering tip drives trigger element and brings into operation take a place of weld seam as starting point, trigger element promotes the elastic wire of certain limit switch and makes this elastic wire crooked on running orbit, this limit switch sends a signal to control module, described control module sends OPEN to the pressing plate cylinder corresponding with this limit switch, described pressing plate cylinder drives connected press plate rotary and makes the soldering tip process, trigger element is through this limit switch, elastic wire on this limit switch restores to the original state, described limit switch sends a signal to control module, described control module sends reset instruction to the pressing plate cylinder corresponding with this limit switch, and described pressing plate cylinder drives connected pressing plate and resets and again push down interior workpiece; Soldering tip continues forward operation along weld seam, trigger element is pushed the elastomeric spring of residue limit switch one by one open, the pressing plate cylinder band dynamic pressure plate corresponding with limit switch rotates one by one and makes the soldering tip process, until soldering tip is got back to described weld seam starting point, control module drives all pressing plate cylinders drive press plate rotaries and opens the end welding process.
Wherein, described pressing plate cylinder receives that OPEN drives press plate rotary after the first time-delay of setting, receives that reset instruction band dynamic pressure plate after the second time-delay of setting resets, and described the first time-delay and the second time-delay are set by control module.
The present invention is owing to adopted the limit switch of mechanical contact and trigger element to control the pressing plate cylinder, eliminated the possibility that causes the misoperation of pressing plate cylinder, in the moving process of soldering tip, pressing plate is opened under the drive of pressing plate cylinder before soldering tip runs to self-position automatically, and push down workpiece at soldering tip through resetting behind the self-position, whole anchor clamps are realized automatically control and reliable, cost.
Description of drawings
Fig. 1 is the principle schematic of friction stir welding;
Fig. 2 is the structural representation of anchor clamps among the present invention;
Fig. 3 is the schematic diagram that cooperates of trigger element and limit switch among the present invention.
Wherein description of reference numerals is as follows:
1 limit switch, 2 pressing plates
3 pressing plate cylinders, 4 clamp base
5 soldering tips, 6 trigger elements
7 elastic wires
The specific embodiment
The present invention is further detailed explanation below in conjunction with accompanying drawing and the specific embodiment.
The machinery of friction stir welding provided by the invention triggers the control model anchor clamps, as shown in Figure 2, comprise clamp base 4, control module (adopting in the present embodiment PLC), trigger element 6, limit switch 1 and six pressing plates 2, each pressing plate 2 is connected with a pressing plate cylinder 3, and each pressing plate cylinder 3 and at least one limit switch 1 are corresponding and by 1 control of corresponding limit switch.The limit switch 1 corresponding with each pressing plate cylinder 3 is positioned at the place ahead of the pressing plate 2 that this pressing plate cylinder 3 controls at the running orbit of soldering tip 5.In the present embodiment, in order to improve the contact reliability of trigger element 6 and limit switch 1, guarantee the automatically accuracy of control of anchor clamps, each pressing plate 2 is front to be equipped with two limit switches 1 side by side.Described limit switch 1 all links to each other with control module with pressing plate cylinder 3.
In the present embodiment, as shown in Figure 3, what limit switch 1 matched with trigger element 6 is an elastic wire 7, and this elastic wire 7 is striden in welded joints, and its two ends lay respectively at the both sides of weld seam, and an end is fixed on the limit switch 1, and the other end is free end.Described trigger element 6 is for promoting the push rod of elastic wire 7 bendings, and it is installed on the soldering tip 5 of friction stir welding and is coaxial with the main shaft of soldering tip 5.
The machinery of friction stir welding triggers the control method of control model anchor clamps in the present embodiment, comprising:
Need the inside and outside workpiece of welding in clamp base 4 location, workpiece in pressing plate cylinder 3 control pressing plates 2 compress;
Under the control of control module, soldering tip 5 drives trigger elements 6 and brings into operation take a place of weld seam as starting point, trigger element 6 promotes the elastic wire 7 of certain limit switch 1 and makes this elastic wire 7 bendings on running orbit, this limit switch 1 sends a signal to control module, described control module sends OPEN to the pressing plate cylinder 3 corresponding with this limit switch 1, described pressing plate cylinder 3 drives connected pressing plate 2 rotations and makes soldering tip 5 processes, trigger element 6 is through this limit switch 1, elastic wire 7 on this limit switch 1 restores to the original state, described limit switch 1 sends a signal to control module, described control module sends reset instruction to the pressing plate cylinder 3 corresponding with this limit switch 1, and described pressing plate cylinder 3 drives connected pressing plate 2 and resets and again push down interior workpiece; Soldering tip 5 continues forward operation along weld seam, trigger element 6 is pushed the elastomeric spring 7 of residue limit switch 1 one by one open, the pressing plate cylinder 3 band dynamic pressure plates 2 corresponding with limit switch 1 rotate one by one soldering tip 5 are passed through, until soldering tip 5 is got back to described weld seam starting point, control module drives all pressing plate cylinder 3 band dynamic pressure plates 2 rotating opening and finishes welding process.
Described pressing plate cylinder 3 receives that OPEN band dynamic pressure plate 2 after the first time-delay of setting rotates, and receives that reset instruction band dynamic pressure plate 2 after the second time-delay of setting resets, and described the first time-delay and the second time-delay are set by control module.
The present invention is owing to adopted the limit switch of mechanical contact and trigger element to control the pressing plate cylinder, eliminated the possibility that causes the misoperation of pressing plate cylinder, in the moving process of soldering tip, pressing plate is opened under the drive of pressing plate cylinder before soldering tip runs to self-position automatically, and push down workpiece at soldering tip through resetting behind the self-position, whole anchor clamps are realized automatically control and reliable, cost.
More than by specific embodiment the present invention is had been described in detail, this embodiment only is preferred embodiment of the present invention, it is not to limit the invention.In the situation that does not break away from the principle of the invention, equivalent replacement and improvement that those skilled in the art makes the quantity of the quantity of pressing plate and distributing position, limit switch and position etc. all should be considered as in the technology category that the present invention protects.
Claims (9)
1. the machinery of a friction stir welding triggers the control model anchor clamps, it is characterized in that, comprise clamp base (4), control module, trigger element (6), limit switch (1) and a plurality of pressing plate (2), each pressing plate (2) is connected with a pressing plate cylinder (3), each pressing plate cylinder (3) is corresponding with at least one limit switch (1) and by corresponding limit switch (1) control, and described limit switch (1) all links to each other with control module with pressing plate cylinder (3); Described trigger element (6) matches to merge with limit switch (1) and is installed on the soldering tip (5) of friction stir welding.
2. the machinery of friction stir welding according to claim 1 triggers the control model anchor clamps, it is characterized in that, what described limit switch (1) matched with trigger element (6) is an elastic wire (7), this elastic wire (7) is striden in welded joints, its two ends lay respectively at the both sides of weld seam, and an end is fixed on the limit switch (1), and the other end is free end.
3. the machinery of friction stir welding according to claim 2 triggers the control model anchor clamps, it is characterized in that, described trigger element (6) is for promoting the crooked push rod of elastic wire (7), and its main shaft with soldering tip (5) is coaxial.
4. the machinery of friction stir welding according to claim 1 triggers the control model anchor clamps, it is characterized in that described control module is PLC.
5. the machinery of friction stir welding according to claim 1 triggers the control model anchor clamps, it is characterized in that the limit switch (1) corresponding with each pressing plate cylinder (3) is positioned at the place ahead of the pressing plate (2) that this pressing plate cylinder (3) controls at the running orbit of soldering tip (5).
6. the machinery of friction stir welding according to claim 1 triggers the control model anchor clamps, it is characterized in that described limit switch is one, perhaps arranged side by side two or more.
7. the machinery of friction stir welding as claimed in claim 1 triggers the control method of control model anchor clamps, it is characterized in that,
Need the inside and outside workpiece of welding in clamp base (4) location, workpiece in pressing plate cylinder (3) control pressing plate (2) compresses;
Under the control of control module, soldering tip (5) drives trigger element (6) and brings into operation take a place of weld seam as starting point, trigger element on running orbit (6) touches certain limit switch (1), this limit switch (1) sends a signal to control module, described control module sends OPEN to the pressing plate cylinder (3) corresponding with this limit switch (1), described pressing plate cylinder (3) drives connected pressing plate (2) rotation and makes soldering tip (5) process, behind trigger element (6) this limit switch of process (1), described limit switch (1) sends a signal to control module, described control module sends reset instruction to the pressing plate cylinder (3) corresponding with this limit switch (1), and described pressing plate cylinder (3) drives connected pressing plate (2) and resets and again push down interior workpiece;
Soldering tip (5) continues forward operation along weld seam, trigger element (6) contacts one by one with remaining limit switch (1), pressing plate cylinder (3) the band dynamic pressure plate (2) corresponding with limit switch (1) rotates one by one and makes soldering tip (5) process, until soldering tip (5) is got back to described weld seam starting point, control module drives all pressing plate cylinder (3) band dynamic pressure plate (2) rotating opening and finishes welding process.
8. the machinery of friction stir welding according to claim 7 triggers the control method of control model anchor clamps, it is characterized in that, what described limit switch (1) matched with trigger element (6) is an elastic wire (7), this elastic wire (7) is across in welded joints, the one end is fixed on the limit switch (1), and the other end is free end; Described trigger element (6) is for promoting the crooked push rod of elastic wire (7), and its main shaft with soldering tip (5) is coaxial; Wherein,
Under the control of control module, soldering tip (5) drives trigger element (6) and brings into operation take a place of weld seam as starting point, trigger element on running orbit (6) promotes the elastic wire (7) of certain limit switch (1) and makes this elastic wire (7) bending, this limit switch (1) sends a signal to control module, described control module sends OPEN to the pressing plate cylinder (3) corresponding with this limit switch (1), described pressing plate cylinder (3) drives connected pressing plate (2) rotation and makes soldering tip (5) process, trigger element (6) is through this limit switch (1), elastic wire (7) on this limit switch (1) restores to the original state, described limit switch (1) sends a signal to control module, described control module sends reset instruction to the pressing plate cylinder (3) corresponding with this limit switch (1), and described pressing plate cylinder (3) drives connected pressing plate (2) and resets and again push down interior workpiece; Soldering tip (5) continues forward operation along weld seam, trigger element (6) is pushed the elastomeric spring (7) of residue limit switch (1) one by one open, pressing plate cylinder (3) the band dynamic pressure plate (2) corresponding with limit switch (1) rotates one by one and makes soldering tip (5) process, until soldering tip (5) is got back to described weld seam starting point, control module drives all pressing plate cylinder (3) band dynamic pressure plate (2) rotating opening and finishes welding process.
According to claim 7 or the machinery of 8 described friction stir weldings trigger the control method of control model anchor clamps, it is characterized in that, described pressing plate cylinder (3) receives that OPEN band dynamic pressure plate (2) after the first time-delay of setting rotates, receive that reset instruction band dynamic pressure plate (2) after the second time-delay of setting resets, described the first time-delay and the second time-delay are set by control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210567498.0A CN103042303B (en) | 2012-12-24 | 2012-12-24 | Friction stir welding fixture in mechanical trigger control mode and method for controlling friction stir welding fixture |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210567498.0A CN103042303B (en) | 2012-12-24 | 2012-12-24 | Friction stir welding fixture in mechanical trigger control mode and method for controlling friction stir welding fixture |
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| CN103042303A true CN103042303A (en) | 2013-04-17 |
| CN103042303B CN103042303B (en) | 2017-03-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103753014A (en) * | 2014-01-02 | 2014-04-30 | 联合汽车电子有限公司 | Clamping device for friction stir welding |
| CN108406193A (en) * | 2018-03-02 | 2018-08-17 | 宁波友智机械科技有限公司 | A kind of welding automatic fixture and its control method for agitating friction weldering |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103753014A (en) * | 2014-01-02 | 2014-04-30 | 联合汽车电子有限公司 | Clamping device for friction stir welding |
| CN108406193A (en) * | 2018-03-02 | 2018-08-17 | 宁波友智机械科技有限公司 | A kind of welding automatic fixture and its control method for agitating friction weldering |
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| CN103042303B (en) | 2017-03-22 |
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