CN207930149U - A kind of agitating friction docking welding clamp - Google Patents

Abstract

The utility model discloses a kind of agitating frictions to dock welding clamp, including pedestal, pressing plate and binding clasp, the side of the pedestal is equipped with side wall, the binding clasp is set to the other side of pedestal, the head end of the push rod of the binding clasp is equipped with dog-ear clamping element, and the dog-ear clamping element is displaced sideways under binding clasp driving, and the top plate of the dog-ear clamping element is equipped with screw hole, the screw of vertical compression is equipped in the screw hole, the end side that the pressing plate is set to the pedestal is used for workpiece vertical compression.The agitating friction butt welding fixture operation is simple, and clamping is secured, and process is stablized when work, and reliability is high.

Description

A friction stir butt welding fixture

technical field

The utility model relates to a clamp for welding, in particular to a friction stir butt welding clamp.

Background technique

Friction stir welding is a solid-phase plastic connection technology based on friction welding technology. The lower thermal cycle in the welding process reduces the tendency of microstructure coarsening, so that the welded joint has high strength and toughness, and overcomes the traditional welding process. Problems that arise during welding. This technology has been successfully applied to the welding of low-melting-point materials such as aluminum and magnesium. In recent years, friction stir welding technology for high-melting-point materials such as steel and titanium has been explored. In the process of friction stir welding, severe friction occurs between the stirring head and the material to be welded, and the material to be welded bears the mechanical load of the stirring head in the process. At present, most of the welding materials are fixed on the workbench by a pressure plate for welding. However, when the butt joint is welded, due to the huge mechanical force generated between the stirring head and the workpiece, the two butt plates will be separated, resulting in a decrease in the strength and toughness of the joint, and the quality of the welded structure is difficult to meet the requirements.

Utility model content

In view of the above-mentioned defects in the prior art, the task of this utility model is to provide a friction stir butt welding jig to solve the problem of fixing the materials to be welded, so as to obtain high-quality butt joints.

The technical solution of the utility model is as follows: a friction stir butt welding fixture, including a base, a pressure plate and a clamp, one side of the base is provided with a side wall, and the clamp is arranged on the other side of the base, The head end of the push rod of the clamp is provided with a knuckle clamp, and the knuckle clamp moves laterally under the drive of the clamp, and the top plate of the knuckle clamp is provided with a screw hole, and the screw A screw for vertical compression is arranged in the hole, and the pressure plate is arranged on the end side of the base for vertical compression of the workpiece.

Further, in order to control the force direction of the clamp to the workpiece, the base is provided with a guide wall on the opposite side of the side wall, and the guide wall is provided with a lateral through hole through which the push rod of the clamp passes. The lateral through hole.

Further, the distance between the side wall and the guide wall is greater than the width of the workpiece.

Further, in order to enhance the friction between the angle clamping piece and the workpiece and ensure stable clamping, the surface of the side plate of the angle clamping piece is a serrated rough surface.

Further, in order to prevent the friction stir welding joint from being damaged by touching the base, the friction stir butt welding fixture includes a backing plate, and the backing plate is arranged on the base and located between the side wall and the corner clamping member.

Preferably, the number of said clamps is not less than two.

Compared with the prior art, the utility model has the advantages that: one end of the workpiece to be welded is close to the side wall of the base, and the other end is clamped by the clamper to push the knuckle clamping piece, and the surface of the workpiece relies on the pressure plate on the base, which can be greatly improved. To improve the disadvantage that only relying on the pressure plate to fix the friction stir welding is not firm. At the same time, the screws provided on the angled clamping parts can increase the reliability of vertical compression on the one hand, and can also prevent the workpiece from warping under the action of the clamping device. The friction stir butt welding jig is easy to operate, firm in clamping, stable in working process and high in reliability.

Description of drawings

Figure 1 is a schematic diagram of the structure of a friction stir butt welding fixture.

FIG. 2 is a schematic top view of FIG. 1 .

Fig. 3 is a schematic diagram of the structure of the corner clamping part.

Detailed ways

The utility model will be further described below in conjunction with the examples, but not as a limitation to the utility model.

Please refer to FIG. 1 to FIG. 3 , the friction stir butt welding fixture involved in this embodiment includes a base 1 , a pressing plate 2 and a clamp 3 . The base 1 is made of medium carbon steel plate. The base 1 is provided with a side wall 4 and a guide wall 5 . A groove 6 is formed between the side wall 4 and the guide wall 5 . The distance between the side wall 4 and the guide wall 5 is greater than the width of the workpiece 7, and the groove 6 is used to place the workpiece 7 to be welded. During specific operations, a backing plate 8 is placed in the groove 6 before the workpiece 7 is placed. When the surface of the groove 6 is processed, a certain degree of flatness must be guaranteed to ensure that the load on the stirring head 9 is constant during the welding process, so as to prevent the stirring head 9 from being broken due to excessive force. The clamp 3 is arranged on the base 1 on one side of the guide wall 5. The clamp 3 adopts a push-pull quick clamp. The specific number of the clamp 3 is determined according to the length of the workpiece 7 to be processed, so as to ensure lateral Reliable compression. The guide wall 5 is provided with a lateral through hole, and the push rod 10 of the clamp 3 passes through the lateral through hole. The head end of the push rod 10 of the clamp 3 is provided with an angled clamping part 11, and the top plate 11a of the angled clamping part 11 is provided with a screw hole 11b, and a screw 12 for vertical compression is arranged in the screw hole 11b. The surface of the side plate 11c of the angle clamping part 11 is a serrated rough surface, and the side plate 11c of the angle clamping part 11 is connected with the push rod 10 of the clamping device 3 through fixing screws. Driven by the clamper 3 and guided by the guide wall 5 , the corner clamping member 11 moves laterally of the base 1 . Four pressing plates 2 are arranged on the two ends of the groove 6 on the base 1, and the pressing plates 2 are connected with the base 1 through two pairs of bolts and nuts to adjust the height.

The main steps of welding using this friction stir butt welding fixture are as follows:

1. Fix the fixture base 1 on the workbench.

2. Put the backing plate 8 into the groove 6 before welding, its width is smaller than the total width of the workpiece 7, and its thickness is smaller than the height of the side wall 4 of the base 1.

3. Place the workpiece 7 to be welded on the backing plate 8, and slightly fix it with the pressure plate 2 at both ends of the groove 6. Two pairs of bolts and nuts on the pressure plate 2 cooperate with each other, one pair is used as a supporting bolt, and the other is used for pressing fixed.

4. Use the clamp 3 to compress and fix the workpiece 7 in the horizontal direction. After the fixation is completed and the adjustment is perfect, the pressure plate is completely fixed.

5. Tighten the screw 12 of the top plate 11a of the corner clamping part 11 to fix the workpiece 7 to prevent the weldment from warping.

6. After the fixing is completed, perform welding.

7. After the welding is completed, loosen the screw 12 first, then loosen the clamp 3, then loosen the pressure plate 2, and take out the welded parts.

Claims (6)

1. a kind of agitating friction docks welding clamp, which is characterized in that including pedestal, pressing plate and binding clasp, the side of the pedestal Equipped with side wall, the binding clasp is set to the other side of pedestal, and the head end of the push rod of the binding clasp is equipped with dog-ear clamping element, institute It states dog-ear clamping element to be displaced sideways under binding clasp driving, the top plate of the dog-ear clamping element is equipped with screw hole, sets in the screw hole There are the screw of vertical compression, the end side that the pressing plate is set to the pedestal to be used for workpiece vertical compression.

2. agitating friction according to claim 1 docks welding clamp, which is characterized in that in the offside of side wall on the pedestal Equipped with guide wall, the guide wall is equipped with lateral through-hole, and the push rod of the binding clasp passes through the lateral through-hole.

3. agitating friction according to claim 2 docks welding clamp, which is characterized in that the spacing of the side wall and guide wall More than the width of workpiece.

4. agitating friction according to claim 1 docks welding clamp, which is characterized in that the side plate of the dog-ear clamping element Surface is zigzag rough surface.

5. agitating friction according to claim 1 docks welding clamp, which is characterized in that the agitating friction docks welding clamp Including backing plate, the backing plate is set on the base and is located between the side wall and dog-ear clamping element.

6. agitating friction according to claim 1 docks welding clamp, which is characterized in that the quantity of the binding clasp is no less than Two.