Multi-way reaming tool for metal pipe

Abstract

A containing groove is formed in the bottom of a containing position, used for containing a metal pipe, on a base, an elastic positioning piece is arranged in the containing groove, a first positioning part is arranged on the top of the elastic positioning piece, a guide seat is located above the containing position, a guide hole corresponding to the elastic positioning piece is formed in the guide seat, and the first positioning part and the second positioning part are arranged on the guide seat. The stress application rod is transversely arranged above the guide seat and extends in the direction of the placing position, a reaming rod extending downwards is arranged at the bottom of the stress application rod and matched with the guide hole, and the lower end of the reaming rod extends out of the guide hole. According to the metal pipe multi-way reaming tool with the optimized design, the structure is simple, operation is easy, the metal pipe is supported through the base, the reaming position is positioned through the guide base, extrusion flanging is conducted on the metal pipe through cooperation of the reaming rod and the guide shaft, and therefore a multi-way structure is formed, limitation of the pipe section is avoided, and the machining efficiency is improved. And multi-way structure processing can be realized without welding.

Description

Technical Field

[0001] The utility model relates to the technical field of multi-pass processing of metal pipes, in particular to a multi-pass hole expanding tool for metal pipes. Background Art

[0002] Traditional multi-pass forming methods for metal tubes include two processes: hydraulic tube expansion and welding. The hydraulic tube expansion forming method requires hydraulic equipment and forming molds, and has a high production cycle and cost.

[0003] The welding forming process has problems such as large welding deformation, reduced strength of the weld heat affected zone, quality defects in the weld, and inconvenient weld quality detection. Utility Model Content

[0004] In order to solve the technical problems existing in the background technology, the utility model provides a multi-channel hole expanding tool for metal pipes.

[0005] The utility model provides a multi-channel metal pipe expansion tool, comprising: a base, a guide seat and a force rod;

[0006] The base is provided with a placement position for placing the metal pipe, a receiving groove is provided at the bottom of the placement position, an elastic positioning piece is provided in the receiving groove, a first positioning portion is provided on the top of the elastic positioning piece, the guide seat is located above the placement position, a guide hole is provided on the guide seat corresponding to the elastic positioning piece, the force rod is arranged laterally above the guide seat and extends along the placement position direction, a hole expansion rod extending downward is provided at the bottom of the force rod, the hole expansion rod cooperates with the guide hole and the lower end extends out of the guide hole.

[0007] Preferably, a second positioning portion is provided at the bottom of the reaming rod.

[0008] Preferably, the elastic positioning member is made of rubber material.

[0009] Preferably, a receiving groove is provided on the guide seat, a return spring is provided in the receiving groove, and the elastic positioning member is located above the return spring.

[0010] Preferably, the bottom of the placement position is provided with a first positioning surface that cooperates with the metal tube.

[0011] Preferably, a second positioning surface cooperating with the metal tube is provided at the bottom of the guide seat.

[0012] Preferably, pressure applying parts are provided at both ends of the force adding rod.

[0013] Preferably, a limiting groove for accommodating the force-adding rod is provided on the top of the guide seat.

[0014] In the utility model, the proposed multi-pass reaming tool for metal tubes has a receiving groove at the bottom of the placement position on the base for placing the metal tube, an elastic positioning piece is provided in the receiving groove, a first positioning portion is provided on the top of the elastic positioning piece, a guide seat is located above the placement position, a guide hole arranged corresponding to the elastic positioning piece is provided on the guide seat, a force rod is arranged horizontally above the guide seat and extends along the placement position direction, a reaming rod extending downward is provided at the bottom of the force rod, the reaming rod cooperates with the guide hole and the lower end extends from the guide hole. The multi-pass reaming tool for metal tubes with the above-mentioned optimized design has a simple structure and is easy to operate. The base supports the metal tube, the guide seat locates the reaming position, and the reaming rod cooperates with the guide shaft to extrude and flange the metal tube, thereby forming a multi-pass structure, which is not limited by the tube cross section and can realize multi-pass structure processing without welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a schematic structural diagram of an implementation method of a multi-channel hole expanding tool for a metal tube.

[0016] Figure 2 For along Figure 1 Cross-section view along AA direction.

[0017] Figure 3 This is a schematic diagram of the metal tube structure before expansion in one embodiment of a multi-pass expansion tool for a metal tube proposed by the utility model.

[0018] Figure 4 This is a schematic diagram of the structure of the metal tube after expansion in one embodiment of a multi-pass hole expansion tool for a metal tube proposed by the utility model. DETAILED DESCRIPTION

[0019] like Figures 1 to 4 As shown, Figure 1 This is a structural schematic diagram of an implementation method of a multi-channel hole expanding tool for metal pipes proposed by the utility model. Figure 2 For along Figure 1 AA direction cross section, Figure 3 This is a schematic diagram of the metal tube structure before hole expansion in one embodiment of a metal tube multi-pass hole expansion tool proposed by the utility model. Figure 4 This is a schematic diagram of the structure of the metal tube after the hole is expanded in one embodiment of a multi-pass hole expansion tool for metal tubes proposed by the utility model.

[0020] Reference Figure 1 and 2 The utility model provides a metal tube multi-hole expansion tool, comprising: a base 1, a guide seat 2 and a force rod 3;

[0021] A placement position for placing a metal tube 10 is provided on the base 1, a receiving groove is provided at the bottom of the placement position, an elastic positioning member 4 is provided in the receiving groove, a first positioning portion is provided on the top of the elastic positioning member 4, a guide seat 2 is located above the placement position, a guide hole arranged corresponding to the elastic positioning member 4 is provided on the guide seat 2, a force rod 3 is arranged laterally above the guide seat 2 and extends along the placement position direction, a hole expansion rod 5 extending downward is provided at the bottom of the force rod 3, the hole expansion rod 5 cooperates with the guide hole and the lower end extends from the guide hole.

[0022] Reference Figure 3 and 4 In the specific working process of the multi-pass reaming tool for metal tubes of this embodiment, the metal tube to be processed is placed on the placement position of the base, so that the first positioning part on the top of the elastic positioning member matches with the position of the metal tube with reaming, and the metal tube is positioned, and then the guide seat is placed in the metal tube so that the guide hole corresponds to the position of the reaming. The force rod is inserted into the metal tube, located above the guide seat, and the reaming rod is matched with the guide hole. By pressing the force rod downward, the lower end of the reaming rod is pressed downward along the guide hole to the position to be reamed to form a flange, and the elastic positioning member gives way as the reaming rod descends, thereby forming a multi-pass tube structure.

[0023] During the hole enlarging process, multiple hole enlarging positions can be enlarged one by one through the hole enlarging rod, or multiple hole enlarging rods can be arranged on the force rod to enlarge multiple hole enlarging positions at the same time.

[0024] In this embodiment, the proposed multi-pass reaming tool for metal tubes has a receiving groove at the bottom of the placement position on the base for placing the metal tube, an elastic positioning piece is provided in the receiving groove, a first positioning portion is provided on the top of the elastic positioning piece, a guide seat is located above the placement position, a guide hole arranged corresponding to the elastic positioning piece is provided on the guide seat, a force rod is arranged horizontally above the guide seat and extends along the placement position direction, a reaming rod extending downward is provided at the bottom of the force rod, the reaming rod cooperates with the guide hole and the lower end extends from the guide hole. The multi-pass reaming tool for metal tubes with the above-mentioned optimized design has a simple structure and is easy to operate. The base supports the metal tube, the guide seat locates the reaming position, and the reaming rod cooperates with the guide shaft to extrude and flanging the metal tube, thereby forming a multi-pass structure, which is not limited by the tube cross section and can realize multi-pass structure processing without welding.

[0025] Through the expansion tool of this embodiment, multi-pass tube forming of different diameters can be quickly realized, with low cost and convenient operation, especially to realize multi-pass requirements in the circumferential direction of large diameter tubes. Through this method, multi-pass forming can be realized on various types of heterogeneous tubes such as round tubes, square tubes, and elliptical tubes.

[0026] In order to facilitate the pre-positioning of the expansion rod and the position of the metal tube to be expanded, in a specific embodiment, a second positioning portion is provided at the bottom of the expansion rod 5. The second positioning portion can be designed as a protrusion, which cooperates with the prefabricated hole with the expansion position.

[0027] In the material selection of the elastic positioning member, the elastic positioning member 4 is made of rubber material so that it will not cause secondary damage to the metal pipe during positioning.

[0028] In a specific design of the base, a return spring 6 is provided in the receiving groove of the base, and the elastic positioning member 4 is located above the return spring 6, so as to improve the pressure-yielding sensitivity of the elastic positioning member.

[0029] In order to adapt to metal tubes of different shapes, the bottom of the placement position may be provided with a first positioning surface that matches the metal tube 10, so as to avoid the position of the metal tube from being offset during processing. Correspondingly, the bottom of the guide seat 2 is provided with a second positioning surface that matches the metal tube 10. The position of the metal tube to be processed is clamped between the first positioning surface and the second positioning surface.

[0030] In the specific design of the force rod, pressure applying parts are provided at both ends of the force rod 3, and pressure is applied from both ends of the force rod to ensure that the metal tube is subjected to balanced force.

[0031] In addition, a limiting groove for accommodating the force rod 3 is provided on the top of the guide seat 2 to ensure that the force rod does not deviate when pressed downward, thereby ensuring the quality of hole expansion.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multi-channel expansion tool for metal pipes, characterized in that: include: A base (1), a guide seat (2) and a force-adding rod (3); A placement position for placing a metal pipe (10) is provided on the base (1), a receiving groove is provided at the bottom of the placement position, an elastic positioning member (4) is provided in the receiving groove, a first positioning portion is provided on the top of the elastic positioning member (4), a guide seat (2) is located above the placement position, a guide hole arranged corresponding to the elastic positioning member (4) is provided on the guide seat (2), a force rod (3) is arranged horizontally above the guide seat (2) and extends along the placement position direction, a hole expansion rod (5) extending downward is provided at the bottom of the force rod (3), the hole expansion rod (5) cooperates with the guide hole and the lower end extends from the guide hole.

2. The multi-channel hole expanding tool for metal pipe according to claim 1, characterized in that: A second positioning portion is provided at the bottom of the hole expansion rod (5).

3. The multi-channel hole expanding tool for metal pipe according to claim 1, characterized in that: The elastic positioning piece (4) is made of rubber material.

4. The multi-channel hole expanding tool for metal pipe according to claim 1, characterized in that: A return spring (6) is also provided in the receiving groove of the base (1), and the elastic positioning member (4) is located above the return spring (6).

5. The multi-channel hole expanding tool for metal pipe according to claim 1, characterized in that: The bottom of the placement position is provided with a first positioning surface that matches the metal pipe (10).

6. The multi-channel hole expanding tool for metal pipe according to claim 1, characterized in that: A second positioning surface matching the metal pipe (10) is provided at the bottom of the guide seat (2).

7. The multi-channel hole expanding tool for metal pipe according to claim 1, characterized in that: Both ends of the force-adding rod (3) are provided with pressure-applying parts.

8. The multi-channel hole expanding tool for metal pipe according to claim 1, characterized in that: A limiting groove for accommodating the force-adding rod (3) is provided on the top of the guide seat (2).

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