CN210117419U - Inner wall laser cladding device of pinhole structure - Google Patents
Inner wall laser cladding device of pinhole structure Download PDFInfo
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- CN210117419U CN210117419U CN201920854909.1U CN201920854909U CN210117419U CN 210117419 U CN210117419 U CN 210117419U CN 201920854909 U CN201920854909 U CN 201920854909U CN 210117419 U CN210117419 U CN 210117419U
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Abstract
The utility model relates to an inner wall laser cladding device of pinhole structure, including three-jaw chuck, protruding pipe cylinder, part, metal ring, bolt, the three-jaw chuck is fixed in the center department of diaxon machine platform of shifting, the protruding pipe cylinder includes cylinder casing and protruding pipe, the top surface and the protruding union coupling of cylinder casing, the cylinder casing link up and all no bottom surface with the protruding pipe, the lateral wall of cylinder casing is equipped with the screw hole. The utility model provides a depth-to-width ratio of pinhole structure is big, and traditional build-up welding technique is difficult to accomplish, the technical problem that welder can't go deep into to obtain the inner wall of pinhole structure corrosion-resistant, stand wear and tear.
Description
Technical Field
The utility model relates to a laser cladding technical field, especially an inner wall laser cladding device of pinhole structure.
Background
In the fields of aerospace, ships, nuclear power, automobiles and the like, the wear resistance and corrosion resistance of pin hole structures of some core parts directly determine the service life of the whole parts, the processing time is long, and the scrapping brings great economic loss to the manufacture of the parts. Therefore, the laser cladding wear-resistant and corrosion-resistant layer is carried out on the through hole structure using the damaged part or the new part, so that the huge economic and time losses are saved, the service life of the part can be prolonged, and the production cost is reduced. The laser cladding technology can recover the original size of the inner wall of the pin hole structure or obviously improve the wear-resisting and corrosion-resisting properties of the surface of the inner wall of the pin hole structure by cladding the same or different metal powder, and has small heat influence on the whole part and small deformation.
When the pin hole structure of a part has a large depth-width ratio and a narrow space, the traditional surfacing technology is difficult to complete, a welding gun cannot go deep, and meanwhile, the part deforms due to a large amount of heat input during surfacing to cause the size of the whole part not to conform to the size of the part and cannot be used. At present, domestic reports and patents for repairing parts by using a laser cladding process are numerous, such as: chinese utility model patent publication No. CN101109083 "engine crankshaft laser cladding repair process", chinese utility model patent publication No. CN109604829A "locomotive diesel engine supercharger nozzle ring laser welding repair device and welding repair method thereof", and chinese utility model patent publication No. CN101100746 "carburization heavy load tooth surface laser cladding powder material and repair method", etc. In these patents, the repair of the parts is completed by using the advantages of laser welding energy concentration, small heat generation amount, small deformation and the like, but the aspect ratio of the pin hole structure is large, and the development of a specific device and a specific process is required.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an inner wall laser cladding device of pinhole structure, the aspect ratio of solving the pinhole structure is big, and traditional build-up welding technique is difficult to accomplish, the unable deep technical problem of welder.
The utility model discloses a following technical scheme realizes above-mentioned purpose: a laser cladding device for an inner wall of a pin hole structure comprises a three-jaw chuck, a convex tube cylinder, a part, a metal ring and a bolt, wherein the three-jaw chuck is fixed at the center of a two-axis positioner platform, the convex tube cylinder comprises a cylinder shell and a convex tube, the top surface of the cylinder shell is connected with the convex tube, the cylinder shell is communicated with the convex tube and has no bottom surface, the side wall of the cylinder shell is provided with a threaded hole, when the device is in a use state, the lower end of the convex tube cylinder is fixed on the three-jaw chuck, the convex tube at the upper end of the convex tube cylinder is inserted into a pin hole of the part, the lower surface of the part is abutted against the top surface of the cylinder shell, and the metal ring is placed on the annular surface at the upper; when the device is in a second use state, the upper end of the cylinder of the convex pipe is fixed on the three-jaw chuck, the part is placed inside the cylindrical shell and is tightly fixed through a bolt, and the bolt is fixed at the threaded hole of the side wall of the cylindrical shell through threads.
Furthermore, the maximum working range phi 250 of the three-jaw chuck, the convex tube and the cylindrical shell are made of stainless steel, the outer diameter of the convex tube is phi 12, the inner diameter of the convex tube is phi 8, the length of the convex tube is 14mm, the thickness of the cylindrical shell is 5mm, the outer diameter of the cylindrical shell is phi 60, the height of the cylindrical shell is 50mm, and 4 phi 6 threaded holes are uniformly distributed at the lower end of the cylindrical shell by 10 mm.
Furthermore, the part has a pin hole structure and is cubic, the diameter of the pin hole is phi 12, the depth of the pin hole is 30mm, the side length of the part is 30mm, and the part is made of carbon steel, stainless steel or high-strength steel.
Furthermore, the material of the metal ring is consistent with that of the part, the outer diameter is phi 12, the inner diameter is phi 8, and the thickness is 1 mm.
Furthermore, the bolt is screwed up and unscrewed to adjust the position of the pin hole central shaft of the part, so that when the part is driven to rotate by the positioner, the pin hole shaft of the part is positioned on the rotating central shaft, the bolt is phi 6, and the length of the bolt is 20 mm.
Compared with the prior art, the utility model discloses inner wall laser cladding device and inner wall laser cladding method of pinhole structure's beneficial effect is:
1. the laser cladding device can quickly complete cladding of the inner wall of the pin hole structure of the part, and is low in cost, high in production efficiency, simple in design structure, light, flexible, simple and convenient to assemble and disassemble and high in positioning accuracy.
2. The laser cladding method can be used for laser cladding, laser repair and laser material increase of the inner wall of the pin hole with a limited narrow space and a larger depth-to-width ratio of parts.
Drawings
FIG. 1 is a process schematic diagram of an inner wall laser cladding method of a pin hole structure.
Fig. 2 is a schematic structural diagram of the laser cladding device in the first step and the second step of the inner wall laser cladding method with the pin hole structure.
Fig. 3 is a schematic structural diagram of the laser cladding device in the third and fourth steps of the inner wall laser cladding method with the pin hole structure.
Fig. 4 is a schematic view of the structure of the spur cylinder.
In the figure: 1. the laser cladding device comprises a three-jaw chuck, 2 threaded holes, 3 protruding pipe cylinders, 31 cylindrical shells, 32 protruding pipes, 4 parts, 5 metal rings, 6 bolts, 7 two-axis positioner platforms and 8 laser cladding heads.
Detailed Description
Referring to fig. 1 to 4, the inner wall laser cladding device with the pin hole structure comprises a three-jaw chuck 1, a convex tube cylinder 3, a part 4, a metal ring 5 and a bolt 6, wherein the three-jaw chuck 1 is fixed at the center of a two-axis positioner platform 7, the convex tube cylinder 3 comprises a cylindrical shell 31 and a convex tube 32, the top surface of the cylindrical shell 31 is connected with the convex tube 32, the cylindrical shell 31 is communicated with the convex tube 32 and has no bottom surface, and the side wall of the cylindrical shell 31 is provided with a threaded hole 2. When the device is in a use state, the lower end of the convex tube cylinder 3 is fixed on the three-jaw chuck, the convex tube at the upper end of the convex tube cylinder is inserted into the pin hole of the part, the lower surface of the part is abutted against the top surface of the cylindrical shell 31, and the metal ring is placed on the annular surface at the upper end of the convex tube and positioned in the pin hole of the part. When the device is in the second use state, the upper end of the convex tube cylinder 31 is fixed on the three-jaw chuck, the part is placed in the cylinder shell 31 and is fixed tightly through the bolt 6, and the bolt 6 is fixed at the threaded hole on the side wall of the cylinder shell 31 through threads.
The maximum working range phi 250 of the three-jaw chuck, the convex tube and the cylindrical shell are made of stainless steel, the outer diameter of the convex tube is phi 12, the inner diameter of the convex tube is phi 8, the length of the convex tube is 14mm, the thickness of the cylindrical shell is 5mm, the outer diameter of the cylindrical shell is phi 60, the height of the cylindrical shell is 50mm, and 4 phi 6 threaded holes are uniformly distributed close to the lower end by 10 mm.
The part has a pinhole structure and is cubic, and the pinhole diameter is phi 12, and the degree of depth is 30mm, and the part length of side is 30mm, and the material is carbon steel, stainless steel, high-strength steel.
The metal ring is made of the same material as the part, the outer diameter is phi 12, the inner diameter is phi 8, and the thickness is 1 mm.
The bolt is screwed up and unscrewed to adjust the position of the pin hole central shaft of the part, so that when the part is driven by the positioner to rotate, the pin hole shaft of the part is positioned on the rotating central shaft, the bolt is phi 6, and the length of the bolt is 20 mm.
The laser cladding method for the inner wall of the pin hole structure comprises the following steps:
the method comprises the following steps: polishing, cleaning and drying the inner wall of a pin hole of a part, fixing the lower end of a cylinder of a tight convex pipe through a three-jaw chuck fixed on a positioner, enabling a central shaft to coincide, inserting the convex pipe into the pin hole of the part and enabling the convex pipe to be close to the pin hole, placing a metal circular ring on the upper surface of the convex pipe in the pin hole of the part, and finally operating a tilting shaft of the positioner to rotate through a six-axis robot demonstrator;
step two: moving the six-axis robot with the laser cladding head to a position of a part to be clad, simultaneously carrying out preheating treatment on the part, cladding the inner wall of the pin hole of the part according to a preset laser cladding program and process parameters of the six-axis robot, and machining and removing a metal ring in the middle of the pin hole of the part after cladding;
step three: polishing, cleaning and drying the inner wall of the pin hole of the part which is not cladded, fixing the upper end of a convex tube cylinder through a three-jaw chuck fixed on a positioner, placing the part in the lower end of the convex tube cylinder and fixing a proper position through a bolt, and finally operating the inclined shaft of the positioner to rotate through a six-axis robot demonstrator;
step four: moving the six-axis robot with the laser cladding head to a position of a part to be clad, simultaneously carrying out preheating treatment on the part, adding powder to be clad into a powder feeder, cladding the inner wall of a pin hole of the part according to a preset laser cladding program and technological parameters of the six-axis robot, and finally carrying out finish machining on the pin hole of the part in a numerical control center to meet the requirement of the final size.
The inclined shaft rotates by an angle of 20-30 degrees in the first step.
The six-axis robot in the second step and the fourth step is Germany KUKA KR90-2900, the laser cladding head is a Germany MultiJet SO16 three-hole nozzle, and the focusing distance is 14-18 mm.
And step two, the preheating treatment in the step four is to heat the part to 250 ℃ by an induction coil heating device for 30-60 min.
The cladding powder in the fourth step is Stellite6 with the particle size of 50-150 μm, and is prepared by an air atomization process.
The preset process parameters in the second step and the fourth step are as follows: the laser power is 600-2000W, the light spot is 1-5 mm, the flow of the coaxial argon protective gas is 15L/min, the flow of the powder-conveying helium is 5L/min, and the lap joint rate is 50%.
The utility model has the advantages as follows:
1. the laser cladding device can quickly complete cladding of the inner wall of the pin hole structure of the part, and is low in cost, high in production efficiency, simple in design structure, light, flexible, simple and convenient to assemble and disassemble and high in positioning accuracy.
2. The laser cladding method can be used for laser cladding, laser repair and laser material increase of the inner wall of the pin hole with a limited narrow space and a larger depth-to-width ratio of parts.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. The utility model provides an inner wall laser cladding device of pinhole structure which characterized in that: the three-jaw chuck is fixed at the center of the two-axis positioner platform, the convex tube cylinder comprises a cylindrical shell and a convex tube, the top surface of the cylindrical shell is connected with the convex tube, the cylindrical shell is communicated with the convex tube and has no bottom surface, the side wall of the cylindrical shell is provided with a threaded hole, when the three-jaw chuck is in a use state, the lower end of the convex tube cylinder is fixed on the three-jaw chuck, the convex tube at the upper end of the convex tube cylinder is inserted into a part pin hole, the lower surface of the part is abutted against the top surface of the cylindrical shell, and the metal ring is placed on the annular surface at the upper end of the convex tube and is positioned in the part pin hole; when the device is in a second use state, the upper end of the cylinder of the convex pipe is fixed on the three-jaw chuck, the part is placed inside the cylindrical shell and is tightly fixed through a bolt, and the bolt is fixed at the threaded hole of the side wall of the cylindrical shell through threads.
2. The inner wall laser cladding device of pinhole structure of claim 1, characterized in that: the maximum working range phi 250 of the three-jaw chuck, the convex tube and the cylindrical shell are made of stainless steel, the outer diameter of the convex tube is phi 12, the inner diameter of the convex tube is phi 8, the length of the convex tube is 14mm, the thickness of the cylindrical shell is 5mm, the outer diameter of the cylindrical shell is phi 60, the height of the cylindrical shell is 50mm, and 4 phi 6 threaded holes are evenly distributed by 10mm at the lower end.
3. The inner wall laser cladding device of pinhole structure of claim 1, characterized in that: the part has a pin hole structure and is cubic, the diameter of the pin hole is phi 12, the depth of the pin hole is 30mm, the side length of the part is 30mm, and the part is made of carbon steel, stainless steel and high-strength steel.
4. The inner wall laser cladding device of pinhole structure of claim 1, characterized in that: the metal ring is made of the same material as the part, the outer diameter is phi 12, the inner diameter is phi 8, and the thickness is 1 mm.
5. The inner wall laser cladding device of pinhole structure of claim 1, characterized in that: the bolt is screwed up and unscrewed to adjust the position of the pin hole central shaft of the part, so that when the part is driven to rotate by the positioner, the pin hole shaft of the part is positioned on the rotating central shaft, the bolt is phi 6, and the length of the bolt is 20 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201920854909.1U CN210117419U (en) | 2019-06-05 | 2019-06-05 | Inner wall laser cladding device of pinhole structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920854909.1U CN210117419U (en) | 2019-06-05 | 2019-06-05 | Inner wall laser cladding device of pinhole structure |
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| CN210117419U true CN210117419U (en) | 2020-02-28 |
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| CN201920854909.1U Active CN210117419U (en) | 2019-06-05 | 2019-06-05 | Inner wall laser cladding device of pinhole structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110106500A (en) * | 2019-06-05 | 2019-08-09 | 航发优材(镇江)增材制造有限公司 | A kind of the inner wall laser cladding apparatus and laser cladding method of pin-and-hole structure |
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2019
- 2019-06-05 CN CN201920854909.1U patent/CN210117419U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110106500A (en) * | 2019-06-05 | 2019-08-09 | 航发优材(镇江)增材制造有限公司 | A kind of the inner wall laser cladding apparatus and laser cladding method of pin-and-hole structure |
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