Flexible supporting and fixing tool for thin-walled pipe parts for laser cladding

Abstract

The utility model relates to the technical field of laser cladding of thin-walled tube parts, in particular to a flexible supporting and fixing tool for thin-walled tube parts for laser cladding, which is of a tube-shaped structure, one end of the flexible supporting and fixing tool is a clamping end, the other end of the flexible supporting and fixing tool is a supporting and fixing end, and a plurality of supporting teeth distributed at equal intervals along the circumferential direction are arranged on the supporting and fixing end. Transverse anti-skid grooves and longitudinal anti-skid grooves are alternately formed in the outer surfaces of the supporting teeth. According to the flexible supporting and fixing tool, deformation of the thin-wall pipe fitting cannot be caused while the pipe fitting is fixed and supported, the outer surfaces of the supporting teeth are provided with the longitudinal anti-skid grooves and the transverse anti-skid grooves, the supporting teeth are subjected to sand blasting treatment before being used, the friction force between the flexible supporting and fixing tool and the pipe fitting to be cladded is increased, and the flexible supporting and fixing tool and the pipe fitting to be cladded are effectively connected; and meanwhile, the tool is prepared from 1Cr18Ni9Ti with moderate hardness and good shaping as a raw material, and new damage to the to-be-cladded pipe fitting cannot be caused while the functions of supporting and fixing the to-be-cladded pipe fitting are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of laser cladding of thin-walled tube parts, in particular to a flexible supporting and fixing tool for thin-walled tube parts used for laser cladding. Background Art

[0002] Tube parts have extensive and important applications in various industries. In order to improve the wear resistance, corrosion resistance and oxidation resistance of the outer surface of high value-added tube parts, or to perform additive repair on the damaged outer surface of the tube, laser cladding is often used. Laser cladding uses a high-energy laser beam to melt the powder and the substrate to form a molten pool on the substrate surface. After solidification, the coating is prepared to achieve the preparation of special functional coatings on the substrate surface or to complete damage repair. When laser cladding pipe fittings, a three-jaw chuck is usually used to clamp the outer surface of the pipe fitting or a three-jaw chuck is used to support the inner surface of the pipe fitting. Then, a motor drives the pipe clamped by the three-jaw chuck to perform a rotational motion, thereby achieving cladding of the pipe fitting. However, in actual cladding tests, it was found that for thin-walled pipe fittings, the use of a three-jaw chuck to clamp the outer surface of the pipe fitting will cause the clamped part of the pipe fitting to be unable to be completely clad due to the obstruction of the three-jaw chuck. When the three-jaw chuck is used to support the inner surface of the pipe fitting, although the pipe fitting can be fully clad, the three-jaw chuck usually uses a large preset force to support the inner surface of the pipe fitting in order to firmly fix and clamp the pipe fitting. However, due to the thin wall thickness of the pipe fitting, the three-jaw chuck will cause a certain degree of micro-deformation of the pipe fitting after a period of time without laser cladding. After deformation, the diameter difference of the pipe fitting end can reach more than 100μm, which does not meet the use requirements of pipe fittings with high dimensional accuracy. At the same time, when the three-jaw chuck supports the inner surface of the pipe fitting, due to the large preset force, the teeth of the three-jaw chuck will cause new damage to the inner surface of the pipe fitting. Utility Model Content

[0003] In order to solve the above technical problems, the utility model proposes a flexible supporting and fixing tool for thin-walled tube parts used for laser cladding.

[0004] The technical problem to be solved by the utility model is achieved by the following technical solutions:

[0005] A flexible support and fixing tooling for thin-walled tube parts used for laser cladding has a tube-shaped structure, one end of which is a clamping end and the other end is a support and fixing end. The clamping end is connected to a rotating motor with a three-jaw chuck. The support and fixing end is used to support and fix the tube to be clad. The support and fixing end is provided with a plurality of support teeth distributed at equal intervals along the circumferential direction, and transverse anti-skid grooves and longitudinal anti-skid grooves are alternately provided on the outer surfaces of the plurality of support teeth.

[0006] Preferably, the flexible support fixing tool is made of 1Cr18Ni9Ti stainless steel pipe fittings, and the outer surface is sandblasted.

[0007] Preferably, the thickness of the flexible support fixture is 1 mm, and the outer diameter is 2 mm larger than the inner diameter of the pipe to be clad.

[0008] Preferably, the length of the clamping end is 35 mm.

[0009] Preferably, the plurality of supporting teeth are formed by cutting, have the same length and are the same as the inner diameter of the pipe to be clad.

[0010] Preferably, the transverse anti-slip groove is parallel to the length direction of the supporting teeth and the length of the groove is consistent with the length of the supporting teeth.

[0011] Preferably, the longitudinal anti-slip groove is parallel to the width direction of the supporting teeth and the length of the groove is consistent with the width of the supporting teeth.

[0012] Preferably, the distances between the anti-skid grooves on the plurality of supporting teeth are all 1 mm, and the width and depth of the anti-skid grooves are all 0.2 mm.

[0013] The beneficial effects of the utility model are:

[0014] The utility model provides a flexible support and fixing tooling for thin-walled pipe parts for laser cladding, which has the characteristics of simple manufacture, low cost, and easy use, and has good application prospects. It can well support and fix the pipes to be clad, and drive the pipes to be clad to make rotational motion at a predetermined speed. At the same time, a flexible support strategy is adopted, which will not cause deformation of thin-walled pipes while fixing and supporting the pipes. The outer surface of the supporting teeth has two types of longitudinal and transverse anti-slip grooves, and the supporting teeth are sandblasted before use to increase the friction between the flexible support and fixing tooling and the pipes to be clad, so that the two are effectively connected. At the same time, the tooling is made of 1Cr18Ni9Ti with moderate hardness and good shaping as raw materials, which will not cause new damage to the pipes to be clad while playing the role of supporting and fixing the pipes to be clad. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the partial structure of the support and fixed end of the utility model;

[0018] Figure 3 Schematic diagram of the combined effect of some devices used in the laser cladding process of thin-walled tube parts.

[0019] In the figure: 1. Flexible support fixing tooling; 11. Clamping end; 12. Support fixing end; 121. Support teeth; 1211. Horizontal anti-skid groove; 1212. Longitudinal anti-skid groove; 2. Rotating motor with three-jaw chuck; 3. Laser powder beam; 4. Pipe fitting to be clad. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0021] like Figure 1 and Figure 2 As shown, a flexible support fixture for thin-walled tube parts for laser cladding is a tube-shaped structure, specifically made of 1Cr18Ni9Ti stainless steel tubes. One end of the fixture is a clamping end 11, and the other end is a support fixing end 12. The clamping end 11 is connected to a rotating motor 2 with a three-jaw chuck, and the support fixing end 12 is used to support and fix the tube 4 to be clad. The length of the clamping end 11 is 35 mm. The support fixing end 12 is provided with a plurality of support teeth 121 distributed at equal intervals along the circumferential direction. In this embodiment, thirty-six support teeth 121 are provided, and the thirty-six support teeth 121 are of the same size and are formed by cutting. The distance between each support tooth 121 is equal and consistent with the width of the support tooth 121. The length of the thirty-six support teeth 121 is consistent and consistent with the inner diameter of the tube 4 to be clad. Two types of anti-skid grooves are alternately arranged on the outer surface of the thirty-six support teeth 121, namely, transverse anti-skid grooves 1211 and longitudinal anti-skid grooves 1212. The transverse anti-skid groove 1211 is parallel to the length direction of the supporting teeth 121 and the groove length dimension is consistent with the length dimension of the supporting teeth 121. The longitudinal anti-skid groove 1212 is parallel to the width direction of the supporting teeth 121 and the groove length dimension is consistent with the width dimension of the supporting teeth 121. The width dimension and depth dimension of the anti-skid groove are both 0.2mm, and the distance between the anti-skid grooves is 1mm.

[0022] Furthermore, the thickness of the flexible support fixture is 1 mm, the outer diameter is 2 mm larger than the inner diameter of the pipe 4 to be clad, and the outer surface is sandblasted to increase the friction between the support fixing end 12 and the pipe 4 to be clad.

[0023] The working principle and use process of this utility model:

[0024] like Figure 3As shown, the diameter of the pipe 4 to be clad is between 20-200mm, the wall thickness is between 1-2mm, and the length is between 50-500mm. When in use, the clamping end 11 on the flexible support fixture 1 is clamped by the three-jaw chuck on the rotating motor 2 with a three-jaw chuck, driving it to make a rotational motion, and the supporting teeth 121 on the supporting and fixing end 12 on the flexible support fixture 1 are inserted into the pipe 4 to be clad, supporting and fixing the pipe 4 to be clad, and driving the pipe 4 to be clad to make a rotational motion during the cladding process. Then the laser powder beam 3 irradiates the rotating pipe 4 to be clad to complete the cladding.

[0025] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A flexible support fixture for thin-walled tube parts for laser cladding, characterized in that: The invention has a pipe-shaped structure, one end of which is a clamping end (11) and the other end of which is a supporting and fixing end (12). The clamping end (11) is connected to a rotating motor (2) with a three-jaw chuck. The supporting and fixing end (12) is used to support and fix a pipe (4) to be clad. The supporting and fixing end (12) is provided with a plurality of supporting teeth (121) distributed at equal intervals along the circumferential direction. The outer surfaces of the plurality of supporting teeth (121) are alternately provided with transverse anti-skid grooves (1211) and longitudinal anti-skid grooves (1212).

2. According to claim 1, a flexible support and fixing tool for thin-walled tube parts for laser cladding, characterized in that: The flexible support fixture is made of 1Cr18Ni9Ti stainless steel pipe fittings, and the outer surface is sandblasted.

3. The flexible support and fixing tool for thin-walled tube parts for laser cladding according to claim 1 is characterized in that: The thickness of the flexible support fixture is 1 mm, and the outer diameter is 2 mm larger than the inner diameter of the pipe (4) to be clad.

4. The flexible support and fixing tool for thin-walled tube parts for laser cladding according to claim 1 is characterized in that: The length of the clamping end (11) is 35 mm.

5. The flexible support and fixing tool for thin-walled tube parts for laser cladding according to claim 1 is characterized in that: A plurality of supporting teeth (121) are formed by cutting, have the same length and are the same as the inner diameter of the pipe (4) to be clad.

6. The flexible support and fixing tool for thin-walled tube parts for laser cladding according to claim 1 is characterized in that: The transverse anti-slip groove (1211) is parallel to the length direction of the supporting tooth (121), and the length dimension of the groove is consistent with the length dimension of the supporting tooth (121).

7. The flexible support and fixing tool for thin-walled tube parts for laser cladding according to claim 1 is characterized in that: The longitudinal anti-slip groove (1212) is parallel to the width direction of the supporting tooth (121), and the groove length dimension is consistent with the width dimension of the supporting tooth (121).

8. The flexible support and fixing tool for thin-walled tube parts for laser cladding according to claim 1 is characterized in that: The distances between the anti-skid grooves on the plurality of supporting teeth (121) are all 1 mm, and the width and depth of the anti-skid grooves are both 0.2 mm.

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