CN112589379A - Machining method and device for V-shaped groove double-layer structure metal plate assembly with corrugated edges - Google Patents
Machining method and device for V-shaped groove double-layer structure metal plate assembly with corrugated edges Download PDFInfo
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- CN112589379A CN112589379A CN202011249178.1A CN202011249178A CN112589379A CN 112589379 A CN112589379 A CN 112589379A CN 202011249178 A CN202011249178 A CN 202011249178A CN 112589379 A CN112589379 A CN 112589379A
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- shaped groove
- outer ring
- inner ring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B47/00—Constructional features of components specially designed for boring or drilling machines; Accessories therefor
- B23B47/28—Drill jigs for workpieces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2247/00—Details of drilling jigs
- B23B2247/12—Drilling jigs with means to affix the jig to the workpiece
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Abstract
The invention discloses a processing method and a device of a sheet metal assembly with a corrugated V-shaped groove and a double-layer structure.A V-shaped groove with a corrugated edge is used for connecting an inner ring and an outer ring to form an annular channel by positioning through an argon arc welding process, and then a mounting seat and a sparking support on the outer side surfaces of the inner ring and the outer ring are welded; and performing angular positioning clamping on a single wave edge of the V-shaped groove, performing machining on riveting bottom holes on the periphery of the part, and finally performing riveting machining. The invention has good processing operability, improves the positioning accuracy and the processing efficiency and reduces the rework and repair situations.
Description
Technical Field
The invention belongs to the technical field of assembly welding and riveting processing, and particularly relates to an assembly processing method and device for a sheet metal assembly with a corrugated V-shaped groove double-layer structure.
Background
As shown in fig. 1 and 2, the sheet metal welding component in the engine is a relatively complex structure, has a diameter size of more than 650mm, and belongs to a large-diameter sheet metal processing assembly. This subassembly passes through the riveting with panel beating inner ring 1, panel beating outer loop 2 by the V type groove 3 of taking the arris and connects and form a semi-enclosed annular channel, welds simultaneously and strikes sparks support 5, fixes first mount pad 6, second mount pad 7, third mount pad 8, fourth mount pad 9 through the welding at the lateral surface of panel beating inner ring 1 and panel beating outer loop 2 at last to supply the assembly of this subassembly in engine parts to use.
In the course of working of this subassembly, need guarantee annular channel upper width dimension L, width dimension N uniformity in week down, guarantee the accuracy of inside and outside 1, the outer 2 outside mount pads welding assembly of ring. The V-shaped groove 3 with the wave edges belongs to large sheet metal forming parts, the aperture of a bottom hole for riveting is only phi 3mm, the riveting hole needs to be located at the center of a groove of the wave edges of the V-shaped groove, the distribution consistency of the wave edges of the V-shaped groove in the circumferential direction is poor, the gaps between the wave edges of the V-shaped groove 3 and the matching positions of the inner ring 1 and the outer ring 2 are large, the circumferential distribution is uneven, the machining positioning accuracy is poor, the riveting hole is machined to deviate due to the conventional clamping method, riveting interference is caused, and the use stability of parts is affected. Poor concentricity of the outer walls of the inner ring 1 and the outer ring 2 may cause the mounting seat mounting position to deviate significantly from the theoretical position, resulting in mounting interference in the engine component. Currently, no mature processing scheme of the component can be used for reference, so that an effective processing process route needs to be determined urgently, and an efficient and reliable technical scheme is provided for processing the component.
Disclosure of Invention
The invention aims to design the assembly processing method of the component by searching the processing method aiming at the V-shaped groove double-layer structure sheet metal component with the corrugated edge, so as to ensure the consistency of assembly welding processing and improve the assembly welding processing efficiency; furthermore, a set of positioning and clamping device for machining the riveting hole in the V-shaped groove with the corrugated edge is designed and manufactured independently, and machining accuracy and machining efficiency of the riveting hole are improved.
The processing method of the sheet metal assembly with the corrugated V-shaped groove double-layer structure comprises the following steps,
the method comprises the following steps that firstly, an inner ring and an outer ring are connected through a V-shaped groove with a corrugated edge in a positioning welding mode to form an annular channel;
welding a first mounting seat, a second mounting seat, a third mounting seat, a fourth mounting seat and a sparking support on the surfaces of the inner ring, the outer ring and the outer ring respectively;
thirdly, carrying out angular positioning and clamping on single wavy edge of the V-shaped groove in the wavy-edge-carrying V-shaped groove, and processing circumferential riveting bottom holes one by one;
and step four, riveting the inner ring, the outer ring and the V-shaped groove with the corrugated edge.
Further, before the first step, the roundness of the inner ring, the outer ring and the V-shaped groove with the corrugated edge is corrected by a metal plate in a free state.
Further, the step one is also preceded by fitting and welding an annular bushing in the hole outside the V-shaped groove with the corrugated edge.
Further, in the first step, the inner ring and the outer ring are connected through the V-shaped groove with the wavy edge, and meanwhile, the ignition support is inserted into the outer ring and the V-shaped groove with the wavy edge.
Further, the step one and the step two further comprise the step of carrying out spot welding positioning on the wave edge of the V-shaped groove with the wave edge, the position to be riveted of the inner ring and the position to be riveted of the outer ring, wherein the diameter of the welding spot is not larger than the outer diameter of the riveting bottom hole, and the metal plate corrects the upper width dimension L and the lower width dimension N between the inner ring and the outer ring.
Further, the second step and the third step further comprise the steps of fixing the circumferential position and the axial position of the inner ring and the outer ring by using a tool in a limiting state, then performing welding stress removing heat treatment, and correcting the upper width dimension L and the lower width dimension N between the inner ring and the outer ring by using a metal plate.
The processing device of the sheet metal assembly with the corrugated V-shaped groove and the double-layer structure comprises,
the first supporting frame and the second supporting frame are arranged at intervals;
the positioning pin penetrates through the first supporting frame and is inserted into an opening at one end of the lower width dimension N between the inner ring and the outer ring, and the insertion end of the positioning pin comprises a section with the outer diameter equal to the lower width dimension N between the inner ring and the outer ring;
the angular positioning pin penetrates through the second support frame and is inserted into an opening at one end of the upper width dimension L between the inner ring and the outer ring, an inserting end of the angular positioning pin is provided with an upward convex wave edge, and a hole is formed in the end face of the wave edge;
the drill jig limiting block is rotatably connected to the upper end of the first supporting frame, and a drill jig is installed on the drill jig limiting block.
Furthermore, the lower ends of the first support frame and the second support frame are fixed on the surface of the base, the upper end of the first support frame is provided with a screw hole, and the upper end of the second support frame is provided with a pressing block for pressing the angular positioning pin;
a through groove is formed in the drill jig limiting block, a locking seat is arranged in the through groove and comprises a threaded section and a head, the threaded section is connected with a screw hole in the upper end of the first support frame, and the width of the head is larger than that of the through groove;
and a bushing is arranged between the positioning pin and the first supporting frame.
Compared with the prior art, the processing method and the device have the following characteristics:
(1) the processing operability is good. The invention breaks through the traditional processing method, provides a reasonable and effective processing process route, ensures the realization and the operability of the processing process of the complex structure, stabilizes the processing quality and adopts the technical scheme of curing processing.
(2) The processing quality of the parts is improved. After the processing method and the device are used, the state of parts processed on site is good, the concentric assembly consistency of the multiple mounting seats and the ignition support is good, the gap of a riveted part is controlled by a resistance spot welding method, the rigidity of the assembly is improved, the deformation of riveting processing is small, the angular positioning and clamping are carried out on a single wave edge of the V-shaped groove, the positioning accuracy and the processing efficiency are improved, the processing position of the riveting hole meets the requirement of a design drawing, good conditions are provided for subsequent riveting processing, and the assembly requirement and the service performance requirement of an engine are ensured.
(3) The reworking and repairing conditions are reduced. After the processing method and the device are used, the rigidity is improved after spot welding and fixing are carried out before riveting, the state of the reference position of the part is good, the assembly stability is good, the processing quality is stable, the trimming and correcting workload is small, the state of the part is good when a riveting hole is processed, and the part can be directly processed without carrying out sheet metal correcting work.
Drawings
FIG. 1 is a partial assembly diagram of a V-shaped groove double-layer structure sheet metal assembly with corrugated edges;
FIG. 2 is a partial top view of a V-shaped groove double-layer structure sheet metal assembly with corrugated edges;
FIG. 3 is a partial view of a riveting bottom hole processing clamp of a V-shaped groove double-layer structure sheet metal assembly with corrugated edges;
in the figure, 1 is an inner ring; 2, outer ring; 3V-shaped groove with wave edge; 4 an annular bushing; 5, a lighting support; 6 a first mounting seat; 7 a second mounting seat; 8, a third mounting seat; 9 a fourth mounting seat; 10, riveting; 11 a base; 12 a first support frame; 13 positioning pins; 14 a second support frame; 15, briquetting; 16 angular limit pins; 17 a bushing; 18 connecting pins; 19 a locking seat; and 20, drilling jig limiting blocks.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments, but it should not be understood that the scope of the subject matter of the present invention is limited to the following embodiments, and various modifications, substitutions and alterations made based on the common technical knowledge and conventional means in the art without departing from the technical idea of the present invention are included in the scope of the present invention.
The invention designs a set of assembling, positioning and welding processing method, which has the following basic ideas:
(1) design basis: designing a set of assembling and processing technological method and a positioning device matched with riveting hole processing clamping according to the actual assembly requirements of the components and the structure and position relationship of the components;
(2) the design idea is as follows: according to the technical requirements and operability of the assembly, the inner ring 1 and the outer ring 2 are connected by adopting a V-shaped groove with a wavy edge through argon arc welding positioning (the welding seam position of the argon arc welding positioning is positioned at the joint of the V-shaped groove 3 with the wavy edge and the inner ring 1, and the joint of the V-shaped groove 3 with the wavy edge and the outer ring 2, namely the joint matching part of the V-shaped groove 3 with the wavy edge and the inner ring and the outer ring) to form an annular channel, and then a plurality of mounting seats and ignition supports 5 on the outer side surfaces of the inner ring 1 and the outer ring 2 are welded; the single wave edge of the V-shaped groove is angularly positioned and clamped, as shown in figure 3, machining for riveting a bottom hole is performed along the periphery of the part, and finally riveting is performed.
The specific implementation method of the invention is as follows:
the positioning device shown in fig. 3 is designed to include a base 1, a first support frame 12 and a second support frame 14 which are arranged at intervals, a positioning pin 13, an angular positioning pin 16, a locking seat 19 and a jig limiting block 20. The positioning pin 13 penetrates through the first support frame 12 and is inserted into an opening at one end of the lower width dimension N between the inner ring 1 and the outer ring 2, and the insertion end of the positioning pin 13 comprises a section with the outer diameter equal to the lower width dimension N between the inner ring 1 and the outer ring 2; an angular positioning pin 16 penetrates through the second support frame 14 and is inserted into an opening at one end of the upper width dimension L between the inner ring 1 and the outer ring 2, an inserting end of the angular positioning pin 16 is provided with an upward convex wave edge, and a hole is formed in the end face of the wave edge; the jig limiting block 20 is rotatably connected to the upper end of the first support frame 12, and a jig is mounted on the jig limiting block 20. The lower ends of a first supporting frame 12 and a second supporting frame 14 are fixed on the surface of the base 1, the upper end of the first supporting frame 12 is provided with a screw hole, and the upper end of the second supporting frame 14 is provided with a pressing block 15 for pressing an angular positioning pin 16; a through groove is formed in the drill jig limiting block 20, a locking seat 19 is arranged in the through groove, the locking seat 19 comprises a threaded section and a head, the threaded section is connected with a screw hole in the upper end of the first support frame 12, and the width of the head is larger than that of the through groove; a bush 17 is provided between the positioning pin 13 and the first support 12. The locking seat 19 is mainly used for fixing the drill jig limiting block 20 and preventing the drill jig from shifting to cause hole position deviation in the machining process. In fig. 3, the head width direction of the locking seat 19 has been rotated to a position parallel to the width direction of the through slot, at this time, because the head width is greater than the width of the through slot, the locking seat 19 presses the jig limiting block 20 to the upper end of the first supporting seat 12, so as to ensure that the jig at the tail end of the jig limiting block 20 does not move.
1. And (3) correcting the metal plate in a free state to ensure that the roundness of the inner ring 1, the outer ring 2 and the V-shaped groove 3 with the corrugated edge is not more than 0.5.
2. And (3) assembling and welding the annular lining 4 in the hole on the outer side of the V-shaped groove with the corrugated edge by an argon arc welding process, and trimming by a fitter to remove coarse welding beading.
3. The inner ring 1 and the outer ring 2 are connected through a V-shaped groove with a wavy edge by positioning through an argon arc welding process to form an annular channel, meanwhile, the ignition support 5 is inserted into holes of the outer ring 2 and the V-shaped groove 3 to determine the circumferential position, the inner ring 1 is adjusted, and the consistency of the flanging notches of the inner ring 1 and the outer ring 2 in the circumferential angle is ensured.
4. Through resistance spot welding technology, spot welding location is carried out at V type groove arris and the interior outer ring position of waiting to rivet, and the solder joint diameter is not more than 3, eliminates the clearance between V type groove arris and the interior outer ring, guarantees that both match and go out closely laminating.
5. Through sheet metal correction, the upper width dimension L and the lower width dimension N of a channel formed by the inner ring and the outer ring are ensured, the mutual difference is not more than 0.5 (the mutual difference is the difference value between the minimum value and the maximum value of the upper width dimension L or the lower width dimension N in one circle in the circumferential direction), and the roundness is not more than 0.5.
6. The first mounting seat 6 and the third mounting seat 8 are assembled and welded on the inner side surface of the inner ring 1 through an argon arc welding process, so that the requirements on circumferential and axial positions are met; assembling and welding a second mounting seat 7 and a fourth mounting seat 9 on the outer side surface of the outer ring 2 to ensure the requirements on the circumferential and axial positions; and meanwhile, assembling and welding the ignition support 5.
7. And (3) fixing the circumferential and axial positions of the inner ring and the outer ring of the assembly by using a tool in a limiting state, and performing welding stress removing heat treatment.
8. Through the sheet metal correction, the upper width dimension L and the lower width dimension N of a channel formed by the inner ring 1 and the outer ring 2 are ensured, the mutual difference is not more than 0.5, and the roundness is not more than 0.5.
9. As shown in fig. 3, the positioning pin 13 is inserted into one end of the inner ring 1 and the outer ring 2 with the width dimension N (supported and positioned by the outer circular surface of the positioning pin 13 with the section diameter equal to N), the angular positioning pin 16 is inserted into one end of the inner ring 1 and the outer ring 2 with the width dimension L, so as to ensure that the upper end surface of the wave edge at the tail end of the angular positioning pin 16 is matched with the wave edge surface of the V-shaped groove, when a riveting bottom hole is machined, the V-shaped groove double-layer structure sheet metal assembly with the wave edge is arranged on a limiting device, and the position of the drilling hole is ensured to be located at the center of the wave edge by matching the wave edge on the angular positioning pin 16 with the wave edge of. Through drilling machining, moving the matched positions of the wave edges, machining a riveting bottom hole on the periphery of the outer ring 2, and removing burrs; and (3) using a small bench drill to process the riveting bottom hole of the inner ring 1, removing burrs and ensuring that the hole diameter meets the riveting requirement.
10. A plurality of rivets 10 are inserted into the riveting bottom holes, and the inner ring 1 and the outer ring 2 are riveted by using a special pneumatic riveting press, so that the requirements on the diameter and the height of the riveting pier are met.
Claims (8)
1. The processing method of the V-shaped groove double-layer structure metal plate assembly with the corrugated edges is characterized by comprising the following steps of: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
firstly, an inner ring (1) and an outer ring (2) are connected through a V-shaped groove (3) with a corrugated edge in a positioning welding mode to form an annular channel;
welding a first mounting seat (6), a second mounting seat (7), a third mounting seat (8), a fourth mounting seat (9) and a sparking support (5) on the surfaces of the inner and outer rings (1) and the outer ring (2) respectively;
thirdly, carrying out angular positioning and clamping on single wavy edges of the V-shaped grooves in the V-shaped grooves (3) with the wavy edges, and processing circumferential riveting bottom holes one by one;
and fourthly, riveting the inner ring (1), the outer ring (2) and the V-shaped groove (3) with the corrugated edge.
2. The processing method of the corrugated V-shaped groove double-layer structure sheet metal assembly according to claim 1, characterized in that: the method further comprises the step of correcting the roundness of the inner ring (1), the outer ring (2) and the V-shaped groove (3) with the corrugated edge in a metal plate in a free state.
3. The processing method of the corrugated V-shaped groove double-layer structure sheet metal assembly according to claim 1, characterized in that: the first step also comprises the step of assembling and welding the annular lining (4) in a hole on the outer side of the V-shaped groove (3) with the corrugated edge.
4. The processing method of the corrugated V-shaped groove double-layer structure sheet metal assembly according to claim 1, characterized in that: in the first step, the inner ring (1) and the outer ring (2) are connected through the V-shaped groove (3) with the wavy edge, and meanwhile, the ignition support (5) is inserted into the outer ring (2) and the V-shaped groove (3) with the wavy edge.
5. The processing method of the corrugated V-shaped groove double-layer structure sheet metal assembly according to claim 1, characterized in that: and the step one and the step two also comprise the step of carrying out spot welding positioning on the wave edges of the V-shaped grooves (3) with the wave edges and the positions to be riveted of the inner ring (1) and the outer ring (2), wherein the diameter of a welding spot is not more than the outer diameter of a riveting bottom hole, and the metal plate corrects the upper width dimension L and the lower width dimension N between the inner ring (1) and the outer ring (2).
6. The processing method of the corrugated V-shaped groove double-layer structure sheet metal assembly according to claim 1, characterized in that: and fixing the circumferential positions and the axial positions of the inner ring (1) and the outer ring (2) by using a tool in a limiting state, then performing welding stress removing heat treatment, and correcting the upper width dimension L and the lower width dimension N between the inner ring (1) and the outer ring (2) by using a metal plate.
7. Take processingequipment of V type groove bilayer structure panel beating sub-assembly of arris, its characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
a first support frame (12) and a second support frame (14) which are arranged at intervals;
the positioning pin (13) penetrates through the first supporting frame (12) and is inserted into an opening at one end of the lower width dimension N between the inner ring (1) and the outer ring (2), and the insertion end of the positioning pin (13) comprises a section with the outer diameter equal to the lower width dimension N between the inner ring (1) and the outer ring (2);
the angular positioning pin (16) penetrates through the second support frame (14) and is inserted into an opening at one end of the upper width dimension L between the inner ring (1) and the outer ring (2), an inserting end of the angular positioning pin (16) is provided with an upward convex wave edge, and a hole is formed in the end face of the wave edge;
the drilling jig limiting block (20), the drilling jig limiting block (20) is rotatably connected to the upper end of the first supporting frame (12), and the drilling jig is installed on the drilling jig limiting block (20).
8. The processing device of the corrugated V-shaped groove double-layer structure sheet metal assembly according to claim 7, wherein:
the lower ends of the first support frame (12) and the second support frame (14) are fixed on the surface of the base (1), the upper end of the first support frame (12) is provided with a screw hole, and the upper end of the second support frame (14) is provided with a pressing block (15) for pressing the angular positioning pin (16);
a through groove is formed in the drill jig limiting block (20), a locking seat (19) is arranged in the through groove, the locking seat (19) comprises a threaded section and a head part, the threaded section is connected with a screw hole in the upper end of the first support frame (12), and the width of the head part is larger than that of the through groove;
and a bushing (17) is arranged between the positioning pin (13) and the first supporting frame (12).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011249178.1A CN112589379B (en) | 2020-11-10 | 2020-11-10 | Machining method and device for V-shaped groove double-layer structure metal plate assembly with corrugated edges |
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| CN202011249178.1A CN112589379B (en) | 2020-11-10 | 2020-11-10 | Machining method and device for V-shaped groove double-layer structure metal plate assembly with corrugated edges |
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| CN112589379B (en) | 2021-12-14 |
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