CN203003406U - Cylindrical workpiece welding concentric locating device - Google Patents

Abstract

The utility model discloses a cylindrical workpiece welding concentricity positioning device, which aims to provide a cylindrical workpiece welding concentricity positioning device capable of accurate positioning, ensuring the concentricity of butt-connected cylindrical workpieces, and improving welding efficiency and quality. It includes a base, a V-shaped groove and a fastening bracket are arranged on the base, a gap is arranged in the middle of the V-shaped groove, and the fastening bracket includes at least one support leg, at least one cantilever beam and a cross block, and the cross block is arranged on the fastening On the top of the bracket, the horizontal block is directly above the V-shaped groove, and 2~10 screw holes are uniformly arranged on the horizontal block along the direction of the working axis determined by the V-shaped groove, and the screw holes are provided with matching positioning bolts. The utility model can accurately locate and ensure the concentricity of the butt cylindrical workpiece, improves the welding quality and welding efficiency of the cylindrical workpiece, and reduces the manufacturing cost.

Description

Cylindrical workpiece welding concentric positioning device

technical field

The utility model relates to a workpiece welding positioning device, in particular to a cylindrical workpiece welding concentric positioning device. the

Background technique

In the field of mechanical processing, there is no professional welding device for the welding of workpieces with a diameter of less than 100mm, especially cylindrical oil cylinders, cylinder barrels and cylinder seats. Welding fixed points can only be observed with the naked eye to see if the centers of the two circular workpieces are centered. After the welding is completed, reprocessing is required to ensure the concentricity of the two cylinders. It is extremely difficult to correct the center of the elongated workpiece. General equipment The processing range cannot be satisfied. Welding without guaranteeing the concentricity of the two workpieces must reserve more margin for subsequent finishing, which brings a lot of waste to the blank. Therefore, the ordinary welding method not only cannot guarantee the welding accuracy, but also has a high defect rate, the appearance of the workpiece after welding is poor, and the work efficiency is low. the

Chinese Patent Authorization Announcement No. CN 201012446Y, authorized announcement date January 30, 2008, discloses a flexible positioner for circular pipe welding, which includes an adjustment rod, which is composed of several conical sections in the same direction, ball sleeves and supports There is a locking nut at one end of the adjusting rod, and the ball sleeve is connected to the other end. Both the ball sleeve and the support are conical. The lower end of the ball sleeve has a spherical hole and a sphere. The upper end of the support has a central screw hole. Rod, the fixed rod protrudes outside and is screwed into the center screw hole on the upper end of the support. There is a concentric sleeve on the outside of the adjusting rod, and an elastic locking sleeve on the outside of the concentric sleeve. There is a release nut at one end and a through groove on it. Adjusting steel balls are arranged in the through groove, and the inward ends of the elastic locking sleeves are all fixed on the same side of the through groove on the concentric sleeve. The flexible positioner for round pipe welding is put into the round pipe to ensure the concentricity of the butt pipes, and performs positioning. It not only cannot solve the welding positioning requirements of cylindrical solid workpieces, but also has a small inner diameter range even for round pipes. the

Utility model content

In order to overcome the problems of difficult center positioning and poor welding quality and low efficiency in the welding process of cylindrical workpieces, the utility model provides a welding concentric positioning of cylindrical workpieces that can accurately locate, ensure the concentricity of butt-joined cylindrical workpieces, and improve welding efficiency and quality. device. the

The cylindrical workpiece welding concentric positioning device of the utility model comprises a base, and a V-shaped groove and a fastening bracket are arranged on the base, a gap is arranged in the middle of the V-shaped groove, and the fastening bracket includes At least one support leg, at least one cantilever beam and a cross block, the cross block is arranged on the top of the fastening bracket, the cross block is directly above the V-shaped groove, and the work defined by the V-shaped groove on the cross block 2 to 10 screw holes are evenly arranged in the axial direction, and the screw holes are provided with matching positioning bolts. Put one end of the butt joint of two cylindrical workpieces on the V-shaped groove to ensure the concentricity of the butt cylindrical workpieces, and place the butt joint at the gap of the V-shaped groove to ensure that the electrode will not be caught by the V-shaped groove during the welding process. Block it, and the welding slag can also fall into the gap without sticking to the V-shaped groove and affecting the positioning effect. Adjust the distance between the butt end faces of the cylindrical workpiece, and then turn the positioning bolts on the fastening bracket clockwise in turn to ensure that the cylindrical workpiece is fixed in the V-shaped groove, and there will be no axial or radial deviation during the welding process, and finally It can weld the butt joints of cylindrical workpieces. The welding process is stable, the welding quality is high, and the concentricity is guaranteed. Only one person can complete high-quality welding of cylindrical workpieces, and the welding efficiency is high. the

As a preference, the same side of the V-shaped groove is respectively provided with a rectangular groove vertical to the bottom plate, and the surface of the rectangular groove is provided with a bolt hole and a fixing bolt matched with the bolt hole, and the fastening bracket has two A support leg, the support leg and the rectangular groove form a sliding connection, the support leg is provided with a through groove at the position corresponding to the bolt hole, the through groove is arranged along the length direction of the support leg, and the inside of the through groove A step is provided, and the bracket is fixedly connected to the base by pressing the step in the slot through the fixing bolt. The fastening support adopts two support legs, which can improve the stability when the workpiece is fastened, and the workpiece is not easy to cause deviation when fastening the workpiece. The support legs are fixed in the rectangular groove by the fixing bolts. When the fixing bolts are loosened, the support legs can slide up and down in the rectangular groove, which improves the diameter range of the applicable cylindrical workpiece of the positioning device, wherein the support legs pass through the groove. The fixing bolts limit the maximum distance that the legs of the bracket can slide up and down. After adjusting the position of the fastening bracket, the fixing bolts are tightened, and the head of the bolt presses the legs of the bracket tightly in the rectangular groove to achieve the purpose of fixing the bracket. the

Preferably, there are 6 screw holes, and the screw holes are arranged symmetrically on the horizontal block. That is, there are 3 screw holes directly above each V-shaped groove, and the bolts near the welding end of the workpiece play a major role in adjusting the concentricity. When the workpiece is relatively long, the middle bolt and the last bolt are responsible for compressing and correcting the V-shaped groove The effect of the straightness of the upper workpiece. the

Preferably, the end of the positioning bolt is provided with a plastic cap. Since both the bolt and the welded workpiece are metal, it is inevitable that the bolt will scratch the outer surface of the workpiece when straightening and compressing the workpiece. Fixing effect, the plastic cap acts as a good buffer and increases the contact area through deformation between the bolt and the surface of the workpiece. the

As a preference, the head of the positioning bolt is a hexagon socket head with a cylindrical head, and anti-slip lines are provided on the outer surface of the cylindrical head. When tools are used to tighten or loosen the hexagon socket head cap bolt head, it will not be affected by the surrounding bolt layout space, and the anti-skid lines on the outer surface of the cylinder head can increase friction during the pre-positioning process by hand. the

As a preference, the head of the fixing bolt is a hexagon socket with a cylindrical head, and anti-slip lines are provided on the outer surface of the cylindrical head. The fixing bolts cooperate with the bosses in the through groove, and the head of some bolts sinks into the through groove. The use of the outer hexagon bolt head is not conducive to installation and disassembly, and the use of the inner hexagon bolt head will not be affected during the tightening or loosening operation. Influenced by the surrounding structure, the anti-skid pattern on the outer surface of the cylindrical head can increase the friction during the pre-positioning process by hand. the

Therefore, the utility model has the following beneficial effects: (1) The positioning and welding operations can be completed by one person, improving work efficiency; (2) The positioning is accurate, and the concentricity of the cylindrical workpiece is high; (3) The finishing work after welding is saved The process reduces the labor intensity and manufacturing cost of the machine manufacturer. the

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is a side view of the utility model;

Fig. 3 is the front view of the utility model.

In the figure: 1. base, 2. V-shaped groove, 3. fastening bracket, 4. bracket leg, 5. rectangular groove, 6. horizontal block, 7. positioning bolt, 8. fixing bolt, 9. through groove, 10 . Step, 11. Plastic cap, 12. Set bolt head, 13. Fixing bolt head. the

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

In the embodiment shown in Fig. 1 and Fig. 2, the cylindrical workpiece welding concentric positioning device includes a base 1, a V-shaped groove 2 and a fastening bracket 3 are arranged on the base 1, and a gap is arranged in the middle of the V-shaped groove 2, The fastening bracket 3 includes a bracket leg 4, a cantilever beam and a cross block 6. The cross block 6 is arranged on the top of the fastening bracket 3. The cross block 6 is directly above the V-shaped groove 2 and is defined along the V-shaped groove 2 on the cross block 6. There are 6 screw holes uniformly arranged in the direction of the working axis of the machine, and the screw holes are provided with matching positioning bolts 7, and one end of the butt joint of two cylindrical workpieces is placed on the V-shaped groove, which can ensure the concentricity of the butt cylindrical workpieces, and the butt joints Placed in the gap of the V-shaped groove, this can ensure that the electrode will not be blocked by the V-shaped groove during the welding process, and the welding slag can also fall into the gap and will not stick to the V-shaped groove to affect the positioning effect. Adjust the distance between the butt end faces of the cylindrical workpiece, and then turn the positioning bolts 7 on the fastening bracket 3 clockwise to ensure that the cylindrical workpiece is fixed in the V-groove 2, and no axial or radial deviation will occur during the welding process . There are 3 screw holes directly above the V-shaped groove 2, and the bolts close to the welding end of the workpiece are mainly used to adjust the concentricity. When the workpiece is relatively long, the middle bolt and the last bolt are responsible for pressing and correcting the V-shaped groove 2. The effect of workpiece straightness. The end of the positioning bolt 7 is provided with a plastic cap 11. Since both the bolt and the welded workpiece are metal, the bolt will inevitably scratch the outer surface of the workpiece when it is corrected and pressed against the workpiece. Even when the surface of the workpiece is rough or uneven, it will cause The pressure is biased or only pressed to a point, thereby affecting the fixing effect. The plastic cap 11 plays a good role in buffering and increasing the contact area through deformation between the bolt and the surface of the workpiece. The positioning bolt head 12 is a hexagonal inner cylinder head, and an anti-slip pattern is provided on the outer surface of the cylinder head. When tools are used to tighten or loosen the hexagon socket head cap bolt head, it will not be affected by the surrounding bolt layout space, and the anti-skid lines on the outer surface of the cylinder head can increase friction during the pre-positioning process by hand. After fixing, the butt joint of the cylindrical workpiece can be welded. The welding process is stable, the welding quality is high, the concentricity is guaranteed, the finishing process after welding is saved, and the labor intensity and manufacturing cost of the machine manufacturer are reduced. At the same time, the welding The process requires only one person to complete the welding of high-quality cylindrical workpieces, and the welding efficiency is high. the

The side of the same side of the V-shaped groove 2 is respectively provided with a rectangular groove 5 vertical to the bottom plate. The surface of the rectangular groove 5 is provided with a bolt hole and a fixing bolt 8 matched with the bolt hole. The fastening bracket 3 has two bracket legs 4. The leg 4 forms a sliding connection with the rectangular groove 5, and the bracket leg 4 is provided with a through groove 9 at the position corresponding to the bolt hole. The inner step 10 of the compression channel 9 forms a fixed connection with the base 1 . The fastening support 3 adopts two support legs 4, which can improve the stability when the workpiece is fastened, and it is difficult to cause deviation when fastening the workpiece. The support leg 4 is fixed in the rectangular groove 5 by the fixing bolt 8, when the fixing bolt 8 is loosened, the support leg 4 can slide up and down in the rectangular groove 5, which improves the diameter range of the applicable cylindrical workpiece of the positioning device, wherein The fixing bolt 8 in the bracket leg 4 through groove 9 limits the maximum distance that the bracket leg 4 slides up and down. After adjusting the position of the fastening bracket 3, by tightening the fixing bolt 8, the head of the bolt tightly presses the bracket leg 4 in the rectangular groove 5 to achieve The purpose of fixing the fastening bracket 3. The fixed bolt head 13 is a hexagonal inner cylinder head, and an anti-slip pattern is provided on the outer surface of the cylinder head. The fixing bolt 8 cooperates with the step 10 in the through groove 9, and the head of some bolts sinks into the through groove 9. The use of the outer hexagon bolt head is not conducive to installation and disassembly, and the inner hexagon bolt head is used for tightening or loosening operations. It will not be affected by the surrounding structure, and the anti-skid lines on the outer surface of the cylindrical head can increase the friction during the pre-positioning process by hand. the

Therefore, the concentric positioning device for welding cylindrical workpieces can accurately position, ensure the concentricity of butt cylindrical workpieces, improve the welding quality and welding efficiency of cylindrical workpieces, and reduce manufacturing costs. the

Claims (6)

1. a cylindrical work welds Concentric locating device, comprise base (1), it is characterized in that, be provided with a V-type groove (2) and securing bracket (3) on described base (1), be provided with a breach in the middle of described V-type groove (2), described securing bracket (3) comprises at least one rack leg (4), at least one cantilever beam and a horizontal piece (6), described horizontal piece (6) is arranged on securing bracket (3) top, described horizontal piece (6) is directly over V-type groove (2), upward along the determined axis of operation direction of V-type groove (2), 2 ~ 10 screws are set evenly at horizontal piece (6), described screw is provided with the bolt (7) that coordinates with it.

2. cylindrical work according to claim 1 welds Concentric locating device, it is characterized in that, described V-type groove (2) side, the same side is respectively arranged with the rectangular channel (5) of vertical base plate, the set bolt (8) that is provided with bolt hole and coordinates with this bolt hole on described rectangular channel (5) surface, described securing bracket (3) has two rack legs (4), described rack leg (4) forms with rectangular channel (5) and is slidably connected, described rack leg (4) is provided with groove (9) in position corresponding to bolt hole, described groove (9) is along rack leg (4) length direction setting, described groove (9) inboard is provided with step (10), described support presses the interior step of groove (9) (10) by set bolt (8) and forms a fixed connection with base (1).

3. cylindrical work welding Concentric locating device according to claim 1 and 2, is characterized in that, described screw is 6, and described screw is symmetricly set on respectively on horizontal piece (6).

4. cylindrical work welding Concentric locating device according to claim 1, is characterized in that, described bolt (7) end is provided with plastic cap (11).

5. cylindrical work welding Concentric locating device according to claim 1 and 2, is characterized in that, described bolt head (12) is hexagonal in socket cap, is provided with anti-slip veins at the socket cap outer surface.

6. cylindrical work welding Concentric locating device according to claim 2, is characterized in that, described set bolt head (13) is hexagonal in socket cap, is provided with anti-slip veins at the socket cap outer surface.

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