CN216177996U

CN216177996U - Expansion clamp for welding semi-closed cylindrical part

Info

Publication number: CN216177996U
Application number: CN202122689483.9U
Authority: CN
Inventors: 张弘军; 孙洪艳; 刘娜
Original assignee: Shenyang Hangxing Electromechanical Equipment Co ltd
Current assignee: Shenyang Hangxing Electromechanical Equipment Co ltd
Priority date: 2021-11-05
Filing date: 2021-11-05
Publication date: 2022-04-05
Anticipated expiration: 2031-11-05

Abstract

The utility model relates to the technical field of machining, in particular to an expansion clamp for welding semi-closed cylindrical parts. The device comprises an assembly shaft, a reference disc, an expansion disc and an inclined pressing disc; the reference disc is arranged on the assembly shaft; the expansion disc is sleeved on the assembly shaft outside the reference disc; the inclined pressing disc is sleeved on the assembling shaft on the outer side of the expansion disc, and the outer wall of the inclined pressing disc is in contact with the inner wall of the expansion disc; the expansion disc is pushed to move along the radial direction by moving along the axial direction through the inclined compression disc. When the semi-closed cylindrical part is welded, the assembly before welding of the semi-closed cylindrical part is finished by adopting the telescopic expansion block and the inclined pressing disc matched with the telescopic expansion block, so that the welding deformation can be eliminated to the maximum extent, and the positioning and welding of the semi-closed cylindrical part are realized.

Description

Expansion clamp for welding semi-closed cylindrical part

Technical Field

The utility model relates to the technical field of machining, in particular to an expansion clamp for welding semi-closed cylindrical parts.

Background

The semi-closed cylinder type part can not be assembled and clamped through an internal mechanism during welding because the cavity of the semi-closed cylinder type part is not open, and the semi-closed cylinder type part is generally welded in a free state. Since there is no constraint, a large welding deformation is easily generated.

SUMMERY OF THE UTILITY MODEL

In view of the above disadvantages and shortcomings of the prior art, the present invention provides an expanding clamp for welding semi-closed cylindrical parts, which solves the technical problem that the semi-closed cylindrical parts are easy to deform during welding.

In order to achieve the purpose, the utility model adopts the main technical scheme that:

the utility model provides an expansion clamp for welding a semi-closed cylindrical part, which comprises an assembly shaft, a reference disc, an expansion disc and an inclined pressing disc, wherein the assembly shaft is arranged on the assembly shaft; the reference disc is arranged on the assembly shaft; the expansion disc is sleeved on the assembly shaft outside the reference disc; the inclined pressing disc is sleeved on the assembling shaft on the outer side of the expansion disc, and the outer wall of the inclined pressing disc is in contact with the inner wall of the expansion disc; the expansion disc is pushed to move along the radial direction by moving along the axial direction through the inclined compression disc.

Further, the tight dish that expands includes a plurality of tight pieces that expand, and a plurality of tight pieces splices that expand form the circular ring form tight dish that expands, and the outer loop of the tight dish that expands is used for contacting with semi-closed cylinder type part, and the inner ring of the tight dish that expands is used for compressing tightly the dish contact with one side.

Further, the outer ring of the expansion disc is matched with the inner wall of the semi-closed cylindrical part.

Furthermore, the inclined pressing disc is of a circular truncated cone structure, and a through hole is formed in the circular truncated cone structure along the axial direction so as to install the inclined pressing disc on the assembling shaft; the outer wall of the oblique pressing disc is used for being in contact with the expansion disc.

Further, the small diameter end of the inclined pressing plate is close to the reference plate.

Furthermore, the periphery of the through hole in the oblique pressing disc is provided with a circle of bolt holes, and the oblique pressing disc and the reference disc are fixedly connected through bolts.

Furthermore, two reference discs are arranged on the assembly shaft, and an expansion disc and an inclined pressing disc are arranged on the outer side of each reference disc.

The utility model has the beneficial effects that: according to the expansion fixture for welding the semi-closed cylindrical part, when the semi-closed cylindrical part is welded, due to the adoption of the telescopic expansion block and the inclined pressing disc matched with the telescopic expansion block, the assembly before welding of the welded semi-closed cylindrical part is completed, compared with the prior art, the expansion fixture can eliminate welding deformation to the maximum extent, and positioning and welding of the semi-closed cylindrical part are realized.

Drawings

FIG. 1 is a schematic structural diagram of an expansion fixture for welding semi-closed cylindrical parts according to the present invention;

fig. 2 is a schematic structural view of the expansion disc of the present invention.

In the figure: 1. assembling a shaft; 2. a reference plate; 3. expanding the disc; 31. expanding and tightening blocks; 4. an inclined pressing disc; 5. a bolt; 6. a flange edge; 7. a barrel; 8. and (7) welding seams.

Detailed Description

For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.

Example 1:

referring to fig. 1, in order to complete the welding of the semi-closed cylindrical part and eliminate the welding deformation to the maximum extent, the utility model provides an expansion clamp for welding the semi-closed cylindrical part. The expansion fixture comprises an assembly shaft 1, a reference disc 2, an expansion disc 3 and an inclined pressing disc 4. Two reference discs 2 are fixedly arranged on the assembly shaft 1, and the two reference discs 2 are arranged on the inner side of the welding position of the semi-closed cylindrical part. The expansion disc 3 is sleeved on the assembly shaft 1 on the outer side of the reference disc 2, and the inner diameter of the expansion disc 3 is larger than the outer diameter of the assembly shaft 1. The oblique pressing disc 4 is sleeved on the assembling shaft 1 outside the expansion disc 3, and the outer wall of the oblique pressing disc 4 is in contact with the inner wall of the expansion disc 3. Compress tightly dish 4 to one side and can remove for assembly axle 1, compress tightly dish 4 axial displacement along assembly axle 1 to one side to promote the radial movement of expanding dish 3 along assembly axle 1, and then will expand the outer wall laminating of dish 3 at the inner wall of semi-closed cylinder type part, with supporting semi-closed cylinder type part, convenient welding, and can eliminate welding deformation.

The semi-closed cylinder part of the utility model can comprise a cylinder body 7 and flange edges 6 arranged at two ends of the cylinder body 7, wherein the cylinder body 7 and the flange edges 6 are welded at a welding seam 8. One end of the flange edge 6 is of a semi-closed structure, namely, a round hole is formed in one end of the flange edge 6, the outer diameters of the reference disc 2, the expansion disc 3 and the inclined pressing disc 4 are smaller than the round hole, and the expansion clamp is convenient to disassemble and take out. When the two ends of the cylinder 7 are welded with the flange edges 6, the semi-closed cavity is formed, so that the part cannot be positioned and welded through an open fixture, and the positioning and welding of the semi-closed cylinder part are realized through the utility model.

Specifically, referring to fig. 2, the expansion disc 3 includes a plurality of expansion blocks 31, and the plurality of expansion blocks 31 are spliced to form the annular expansion disc 3. The terminal surface of every bloated tight piece 31 is the inclined plane, and the terminal surface laminating of two adjacent bloated tight pieces 31 to form the ring after the concatenation, can also guarantee to expand tightly set 3 and be strutted the back, do not have the clearance between two adjacent bloated tight pieces 31, play better supporting role. The outer ring of the expansion disc 3 is used for being in contact with the semi-closed cylindrical part, and the inner ring of the expansion disc 3 is used for being in contact with the inclined pressing disc 4. The inner ring of the expansion disc 3 is in a round table shape, and the taper of the inner ring is consistent with that of the outer ring of the inclined pressing disc 4, so that the inner ring of the expansion disc 3 is tightly attached to the outer wall of the inclined pressing disc 4. The outer ring of the expansion disc 3 is matched with the inner wall of the semi-closed cylindrical part. The utility model can process semi-closed cylindrical parts with different diameters only by replacing the inclined pressing discs 4 with different diameters.

Specifically, the inclined pressing disc 4 is of a circular truncated cone structure, and a through hole is formed in the circular truncated cone structure along the axial direction, so that the inclined pressing disc 4 is installed on the assembling shaft 1. During installation, one end with a small diameter of the oblique pressing disc 4 needs to be close to the reference disc 2, and one end with a large diameter of the oblique pressing disc 4 needs to be far away from the reference disc 2. The outer wall of the inclined pressing disc 4 is used for contacting with the inner ring of the expansion disc 3. When the oblique pressing disc 4 is just inserted into the inner ring of the expansion disc 3, the oblique pressing disc 4 is in line contact with the expansion disc 3, and the oblique pressing disc 4 moves towards the reference disc 2, so that the oblique pressing disc 4 and the expansion disc 3 are in surface contact to prop open the expansion disc 3 and support the expansion disc 3 on the inner wall of the semi-closed cylindrical part.

The periphery of the through hole on the oblique pressing disc 4 is provided with a circle of bolt holes, the corresponding position of the reference disc 2 is also provided with a circle of bolt holes, and the oblique pressing disc 4 and the reference disc 2 are fixedly connected through bolts 5.

The utility model is provided with two reference discs 2 on an assembly shaft 1, an expansion disc 3 which can stretch out and draw back along the radial direction is arranged on the assembly shaft 1 at the outer side of the reference discs 2, and the expansion disc 3 is in a ring shape formed by splicing eight expansion blocks. The outer ring of the expansion disc 3 is contacted with the semi-closed cylindrical part, and the inner ring of the expansion disc 3 is a conical surface and is contacted with the outer wall of the inclined pressing disc 4. The expansion disc 3 moves along the radial direction after the oblique pressing disc 4 moves along the axial direction, so that the cylinder 7 and the flange edge 6 of the semi-closed cylindrical part are expanded simultaneously, the semi-closed cylindrical part is assembled and welded before being welded, and welding deformation is reduced.

According to the utility model, the assembly before welding of the semi-closed cylindrical part is completed by matching the tapered inclined pressing disc 4 with the telescopic expansion disc 3, the welding is implemented, the semi-closed cylindrical part can be supported and positioned, and the welding deformation is reduced.

Claims

1. The utility model provides a be used for semi-closed cartridge type part welded tight anchor clamps that expand which characterized in that: comprises an assembly shaft (1), a reference disc (2), an expansion disc (3) and an inclined pressing disc (4); the reference disc (2) is arranged on the assembly shaft (1); the expansion disc (3) is sleeved on the assembling shaft (1) on the outer side of the reference disc (2); the inclined pressing disc (4) is sleeved on the assembling shaft (1) on the outer side of the expansion disc (3), and the outer wall of the inclined pressing disc (4) is in contact with the inner wall of the expansion disc (3); the inclined pressing disc (4) moves along the axial direction to push the expansion disc (3) to move along the radial direction.

2. The expansion fixture for semi-closed cylinder type part welding according to claim 1, characterized in that: the expansion disc (3) comprises a plurality of expansion blocks (31), the expansion blocks (31) are spliced to form a circular ring shape, the expansion disc (3) is used for contacting with a semi-closed cylindrical part, and the inner ring of the expansion disc (3) is used for contacting with the oblique compression disc (4).

3. The expansion clamp for welding the semi-closed cylinder type part according to claim 2, is characterized in that: the outer ring of the expansion disc (3) is matched with the inner wall of the semi-closed cylindrical part.

4. The expansion fixture for semi-closed cylinder type part welding according to claim 1, characterized in that: the inclined pressing disc (4) is of a circular truncated cone structure, and a through hole is formed in the circular truncated cone structure along the axial direction, so that the inclined pressing disc (4) is installed on the assembling shaft (1); the outer wall of the oblique pressing disc (4) is used for being in contact with the expansion disc (3).

5. The expansion clamp for welding the semi-closed cylinder type part according to claim 4, wherein: the small-diameter end of the inclined pressing disc (4) is close to the reference disc (2).

6. The expansion clamp for welding the semi-closed cylinder type part according to claim 4, wherein: the periphery of the through hole in the oblique pressing disc (4) is provided with a circle of bolt holes, and the oblique pressing disc (4) is fixedly connected with the reference disc (2) through bolts (5).

7. The expansion fixture for semi-closed cylinder type part welding according to claim 1, characterized in that: the assembling shaft (1) is provided with two reference discs (2), and the outer side of each reference disc (2) is provided with one expansion disc (3) and one inclined pressing disc (4).