A stamping and riveting die for precision sheet metal part production

Abstract

The present application relates to the technical field of stamping die, and more particularly to a stamping and riveting die for precision sheet metal part production, which does not need rivets, can realize self-locking connection of the plate part, directly utilizes the deformation of the sheet metal part itself to form a connecting point, saves the purchasing, storage and installation process of the rivets, greatly simplifies the process, reduces the material and management cost, creates conditions for high-speed automatic production, realizes low sensitivity to the overall coaxiality error through split fan-shaped shearing and the concave die with spiral guide ribs, accurately guides each fan-shaped curl through the guide ribs, forms uniform and complete mechanical interlocking, ensures consistent and reliable strength of the connecting point, disperses the impact force to the six fan-shaped pieces, converts the vertical stamping into smooth curling, improves stress distribution, effectively protects the die through the built-in spring buffer and linkage demolding mechanism, reduces cracking and wear, significantly prolongs the service life of the die, and reduces the maintenance cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of stamping dies, more particularly to a stamping and riveting die for precision sheet metal part production. BACKGROUND

[0002] The stamping and riveting die for precision sheet metal part production is widely used in the field of air conditioner manufacturing, significantly improves the processing efficiency and quality consistency of sheet metal structural parts, and plays a key role in realizing high-precision and large-scale production.

[0003] The stamping and riveting die for precision sheet metal part production generally includes a die main body composed of an upper die seat, a lower die seat, a guide mechanism, a material pressing device, a punch, and a riveting module, etc., to realize precise alignment and pressure control; a driving system provides stamping power; a control system is responsible for process parameter adjustment and operation coordination; and an execution part is equipped with special tools such as a punching knife, a riveting head, and a shaping block according to specific processes. The systems work collaboratively to complete multiple processes such as punching, flanging, riveting, and shaping of sheet metal, and have the characteristics of high rigidity, high stability, and process integration. However, the above working method still has the following shortcomings:

[0004] 1. Traditional riveting must additionally purchase, manage, and install independent rivets (solid or cored rivets), which is complicated and costly, and the manual rivet insertion efficiency is low, becoming a bottleneck for automated production.

[0005] 2. The male die and female die of the traditional riveting die are prone to coaxiality deviation due to machining errors or wear, causing rivet skewing, loose riveting, or workpiece damage, large connection strength fluctuations, and quality risks.

[0006] 3. The traditional die has local stress concentration and abnormal cracking of the male die and female die under eccentric force or oblique stamping, with a service life much lower than the design requirement, frequent replacement, and high maintenance cost.

[0007] Therefore, the present application provides a stamping and riveting die for precision sheet metal part production. SUMMARY

[0008] In order to overcome the above-mentioned defects of the prior art, the present application provides a stamping and riveting die for precision sheet metal part production to solve the problems in the above background art.

[0009] The application provides the following technical scheme: a stamping and riveting die for precision sheet metal part production, two guide columns are fixedly connected to the top of the lower die seat, a female die is arranged in the middle of the lower die seat, an inner fixing sleeve is arranged in the female die, a rotating disc is arranged in the inner fixing sleeve, a support frame is arranged at the top of the inner fixing sleeve, helical guide ribs are arranged on the outer side of the rotating disc, an upper die seat is arranged above the lower die seat, two guide sleeves are fixedly connected to the bottom of the upper die seat, a male die is arranged in the middle of the upper die seat, a male die outer sleeve barrel is arranged at the top of the male die, a male die inner barrel is arranged in the male die, lugs are arranged on the outer side of the male die inner barrel, and an upper pre-pressing block is arranged in the male die inner barrel.

[0010] Further, a female die outer sleeve barrel is arranged at the bottom of the female die, a first spring is fixedly connected to the inner bottom surface of the female die outer sleeve barrel, a female die inner sleeve barrel is arranged at the top of the first spring, a lower pre-pressing ring is fixedly connected to the top of the female die inner sleeve barrel, and ten gaskets are fixedly connected to the top of the lower pre-pressing ring.

[0011] Further, a lower circular blade is arranged at the top center of the support frame, six lower blades are fixedly connected to the outer side of the lower circular blade, a lower push block is arranged on the inner side of the lower circular blade, a second spring is fixedly connected to the bottom of the lower push block, and a conical guide block is arranged at the bottom of the support frame.

[0012] Further, six guide columns are fixedly connected to the side surface of the rotating disc, a linkage ring is arranged on the outer side of the rotating disc, the inner side surface of the linkage ring and the outer side surface of the guide column are fixedly connected, a guide rib fixing ring is arranged at the upper portion of the linkage ring, six helical guide ribs are uniformly distributed on the side surface of the guide rib fixing ring, and a third spring is fixedly connected to the bottom of the rotating disc.

[0013] Further, six guide grooves are formed in the side surface of the inner fixing sleeve, a fixing groove is arranged at the bottom of the inner fixing sleeve, a flattening pad is fixedly connected to the outer side of the fixing groove, six female die upset pieces are fixedly connected to the top of the flattening pad, and three rigid gaskets are fixedly connected to the top of the female die upset pieces.

[0014] Further, a first base is fixedly connected to the inner top surface of the male die outer sleeve barrel, a fourth spring is fixedly connected to the bottom of the first base, a fifth spring is arranged on the outer side of the fourth spring, the top of the fifth spring and the inside of the male die outer sleeve barrel are fixedly connected, a second base is arranged in the male die outer sleeve barrel, the top of the second base and the bottom of the fifth spring are fixedly connected, the top of the six lugs and the bottom of the second base are fixedly connected, the top of the male die inner barrel and the bottom of the fourth spring are fixedly connected, and a pre-pressing spring is arranged in the male die inner barrel.

[0015] Further, the inner top surface of the punch inner barrel is provided with six third bases, the bottom of the third base is fixedly connected with the top of the pre-pressing spring, the inner top surface of the punch inner barrel is provided with six limiting grooves, the bottom center of the punch inner barrel is provided with an upper circular blade, the outer side of the upper circular blade is fixedly connected with an upper blade, and the middle part of the upper circular blade is provided with an upper push block, and the top of the upper push block is fixedly connected with a sixth spring.

[0016] Further, the upper pre-pressing block side is fixedly connected with a connecting block, and the bottom of the pre-pressing spring is fixedly connected with the top of the upper pre-pressing block.

[0017] Technical effects and advantages of the present application:

[0018] 1. The present application adopts rivet-free self-locking connection, directly utilizes the deformation of sheet metal parts to form connection points, completely eliminates the procurement, storage, feeding and installation processes of rivets, greatly simplifies the production process, reduces the material and management costs, and clears the obstacles for realizing high-speed automatic production.

[0019] 2. The present application adopts split fan-shaped shearing and concave mold with guide ribs, which is not sensitive to the overall coaxiality error of the piece curling forming, and the guide ribs can accurately guide each piece of fan-shaped curling to ensure the formation of uniform and complete mechanical interlocking structure, thereby ensuring that each connection point has consistent and excellent connection strength.

[0020] 3. The present application disperses the concentrated impact force to multiple fan-shaped pieces through split shearing of sheet metal parts, and converts the vertical stamping force into smooth curling force through the curved surface guide of the guide rib, greatly improves the stress distribution, at the same time, the built-in spring buffer and linkage demolding mechanism further protects the mold, significantly reduces the cracking and wear, thereby doubling the service life of the mold, reduces the maintenance frequency and total cost. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0022] Figure 2 It is a schematic diagram of the concave mold structure of the present application.

[0023] Figure 3 It is a schematic diagram of the Figure 2 middle along the direction A cross-sectional structure.

[0024] Figure 4 It is a schematic diagram of the internal structure of the concave mold of the present application.

[0025] Figure 5 It is a schematic diagram of the support frame structure of the present application.

[0026] Figure 6The schematic diagram of the rotating disc structure of the present application.

[0027] Figure 7 The schematic diagram of the inner fixing sleeve structure of the present application.

[0028] Figure 8 The schematic diagram of the punch structure of the present application.

[0029] Figure 9 The schematic diagram of the rotating disc structure of the present application. Figure 8 The schematic diagram of the cross section structure along the B direction.

[0030] Figure 10 The schematic diagram of the protruding block structure of the present application.

[0031] Figure 11 The schematic diagram of the inner barrel structure of the punch of the present application.

[0032] Figure 12 The schematic diagram of the upper pre-pressing block structure of the present application.

[0033] The reference signs are as follows: 1, lower die seat; 11, upper die seat; 12, guide column; 13, guide sleeve; 2, concave die; 21, concave die outer sleeve barrel; 211, first spring; 22, concave die inner sleeve barrel; 221, lower pre-pressing ring; 2211, gasket; 23, support frame; 231, lower circular blade; 2311, lower blade strip; 232, lower push block; 2321, second spring; 233, conical guide block; 24, rotating disc; 241, guide column; 242, linkage ring; 243, third spring; 244, guide rib fixing ring; 245, helical guide rib; 25, inner fixing sleeve; 251, guide groove; 252, fixing groove; 26, flattening gasket plate; 261, concave die upsetting piece; 262, rigid gasket; 3, punch; 31, punch outer sleeve barrel; 311, first base; 312, fourth spring; 313, fifth spring; 32, second base; 321, protruding block; 33, punch inner barrel; 331, third base; 332, limiting groove; 333, upper circular blade; 334, upper blade strip; 335, upper push block; 3351, sixth spring; 34, upper pre-pressing block; 341, connecting block; 342, pre-pressing spring. DETAILED DESCRIPTION

[0034] The technical solutions in the present application will be described clearly and completely below in combination with the drawings in the present application, and in addition, the forms of each structure described in the following embodiments are only examples, and the precision sheet metal part production stamping and riveting die involved in the present application is not limited to each structure described in the following embodiments, and all other embodiments obtained by the ordinary skilled in the art without making creative efforts belong to the scope of protection of the present application.

[0035] Referring to Figure 1 ,Figure 3 And Figure 9 The application provides a stamping and riveting die for precision sheet metal part production, two guide columns 12 are fixedly connected to the top of a lower die seat 1, a concave die 2 is arranged in the middle of the lower die seat 1, an inner fixing sleeve 25 is arranged in the concave die 2, a rotating disc 24 is arranged in the inner fixing sleeve 25, a supporting frame 23 is arranged at the top of the inner fixing sleeve 25, helical guide ribs 245 are arranged on the outer side of the rotating disc 24, an upper die seat 11 is arranged above the lower die seat 1, two guide sleeves 13 are fixedly connected to the bottom of the upper die seat 11, a convex die 3 is arranged in the middle of the upper die seat 11, a convex die outer sleeve barrel 31 is arranged at the top of the convex die 3, a convex die inner barrel 33 is arranged in the convex die 3, convex blocks 321 are arranged on the outer side of the convex die inner barrel 33, and an upper pre-pressing block 34 is arranged in the convex die inner barrel 33.

[0036] Through the guiding effect of the guide columns 12 and the guide sleeves 13, the centers of the upper and lower dies are ensured to correspond, damage of the dies due to deviation is avoided, the rotating disc 24 can rotate and move up and down the helical guide ribs 245 on the side of the sheet metal part according to the stamping effect of the convex die 3 on the sheet metal part, so that the helical guide ribs 245 can rotate out of the formed fan-shaped roll, and the helical guide ribs 245 are prevented from being pressed in the sheet metal part by subsequent stamping effect, the upper pre-pressing block 34 first contacts the upper surface of the sheet metal part during the downward movement of the convex die 3, so that the sheet metal part is pre-pressed, displacement of the two plate parts in subsequent work is prevented, and the machining precision is improved, the upper and lower sheet metal parts are cut and sheared to form a plurality of fan-shaped pieces through the die, and are bent, so that the conical guide blocks 233 can guide the fan-shaped pieces in a direction, and then the fan-shaped pieces are bent into a roll through the helical guide ribs 245, the formed roll is distributed on the lower surface of the sheet metal part, and then the formed roll is tightly attached to the lower surface of the sheet metal part through compression, and then the stamping and riveting work is completed.

[0037] Referring to Figure 2 And Figure 3 A concave die outer sleeve barrel 21 is arranged at the bottom of the concave die 2, a first spring 211 is fixedly connected to the inner bottom of the concave die outer sleeve barrel 21, a concave die inner sleeve barrel 22 is arranged at the top of the first spring 211, a lower pre-pressing ring 221 is fixedly connected to the top of the concave die inner sleeve barrel 22, and ten gaskets 2211 are fixedly connected to the top of the lower pre-pressing ring 221.

[0038] Through the effect of the first spring 211 on the bottom of the concave die inner sleeve barrel 22, the lower pre-pressing ring 221 at the top of the concave die inner sleeve barrel 22 is ensured to always press the lower surface of the sheet metal part, and in combination with the effect of the upper pre-pressing block 34 on the upper surface of the sheet metal part, the pre-pressing treatment before subsequent work is ensured, and slippage between the two sheet metal parts is prevented, meanwhile, the ten gaskets 2211 at the top of the lower pre-pressing ring 221 can prevent damage to the surface of the sheet metal part during the pre-pressing process.

[0039] Referring to Figure 4 And Figure 5The top center of the support frame 23 is provided with a lower circular blade 231, the outer side of the lower circular blade 231 is fixedly connected with six lower blades 2311, the inner side of the lower circular blade 231 is provided with a lower push block 232, the bottom of the lower push block 232 is fixedly connected with a second spring 2321, and the bottom of the support frame 23 is provided with a conical guide block 233.

[0040] The middle part of the sheet metal part is stamped and cut through the lower circular blade 231, and the sheet metal part is stamped and divided into six independent sector pieces through the six lower blades 2311, and the sector pieces are connected with the sheet metal part, which provides raw materials for subsequent fixing, without additional rivets, fully utilizes the sheet metal part itself, reduces the rivet operation, improves the work efficiency, and the second spring 2321 and the lower push block 232 jointly act on the circular piece after division to push it out, preventing the circular piece from accumulating inside the support frame 23.

[0041] Referring to Figure 6 , the side of the rotating disc 24 is fixedly connected with six guide columns 241, the outer side of the rotating disc 24 is provided with a linkage ring 242, the inner side of the linkage ring 242 is fixedly connected with the outer side of the guide column 241, the upper part of the linkage ring 242 is provided with a guide rib fixed ring 244, six spiral guide ribs 245 are uniformly distributed on the side of the guide rib fixed ring 244, and the bottom of the rotating disc 24 is fixedly connected with a third spring 243.

[0042] The six guide columns 241 limit and guide the movement of the rotating disc 24, ensure that the guide rib fixed ring 244 drives the spiral guide rib 245 to move, and at the same time, the third spring 243 resets the rotating disc 24, thereby ensuring continuous work of the device, and the sector piece moves along the inside of the spiral guide rib 245 and is curled upward under the stamping of the convex die 3.

[0043] Referring to Figure 4 and Figure 7 , the side of the inner fixing sleeve 25 is provided with six guide grooves 251, the bottom of the inner fixing sleeve 25 is provided with a fixed groove 252, the outer side of the fixed groove 252 is fixedly connected with a flattening pad 26, the top of the flattening pad 26 is fixedly connected with six concave die upsetting pieces 261, and the top of the concave die upsetting piece 261 is fixedly connected with three rigid pads 262.

[0044] The downward movement of the convex die 3 drives the six guide columns 241 on the side of the rotating disc 24 to move along the guide grooves 251, so that the rotating disc 24 drives the spiral guide rib 245 to move downward first, then the rotating disc 24 drives the spiral guide rib 245 to rotate by a certain angle, so that the spiral guide rib 245 is turned out from the inside of the curled sector piece, then moves downward again, so that the spiral guide rib 245 enters the gap between the concave die upsetting pieces 261, leaving space for the subsequent compression process, and protecting the spiral guide rib 245 from being crushed.

[0045] With reference to Figure 8 and Figure 9 The first base 311 is fixedly connected to the inner top surface of the punch outer sleeve barrel 31, the fourth spring 312 is fixedly connected to the bottom of the first base 311, the fifth spring 313 is arranged on the outer side of the fourth spring 312, the top of the fifth spring 313 is fixedly connected to the inner top surface of the punch outer sleeve barrel 31, the second base 32 is arranged in the inner top surface of the punch outer sleeve barrel 31, the top of the second base 32 is fixedly connected to the bottom of the fifth spring 313, the six protrusions 321 are fixedly connected to the bottom of the second base 32, the punch inner barrel 33 is fixedly connected to the bottom of the fourth spring 312, and the pre-pressing spring 342 is arranged in the inner top surface of the punch inner barrel 33.

[0046] The fourth spring 312 enables the punch inner barrel 33 to automatically return to the initial position after shearing is completed, and the fifth spring 313 only provides a certain pre-pressing effect for the six protrusions 321, and when the value exceeds the bearing value, the protrusions 321 at the bottom of the second base 32 are pushed downward by the punch outer sleeve barrel 31, and finally, the formed roll of the fan-shaped pieces is compressed to provide stable pressure.

[0047] With reference to Figure 10 and Figure 11 The third base 331 is arranged on the inner top surface of the punch inner barrel 33, the bottom of the third base 331 is fixedly connected to the top of the pre-pressing spring 342, the six limiting grooves 332 are arranged in the inner top surface of the punch inner barrel 33, the upper circular blade 333 is arranged at the bottom center of the punch inner barrel 33, the upper circular blade 333 is fixedly connected to the upper blade 334, the upper pushing block 335 is arranged on the upper circular blade 333, and the sixth spring 3351 is fixedly connected to the top of the upper pushing block 335.

[0048] With reference to Figure 12 The connecting block 341 is fixedly connected to the side surface of the upper pre-pressing block 34, and the bottom of the pre-pressing spring 342 is fixedly connected to the top of the upper pre-pressing block 34.

[0049] The six upper pre-pressing blocks 34 are connected through the connecting block 341, so that the six upper pre-pressing blocks 34 can move synchronously, the fan-shaped pieces after stamping and segmentation are subjected to preliminary bending operation through the upper pre-pressing block 34, so as to provide pretreatment for the subsequent rolling process of the fan-shaped pieces, and meanwhile, the movement of the upper pre-pressing block 34 is guided by the limiting groove 332.

[0050] The working principle of the present application: compression and cutting stage, first, the upper die holder 11 is driven by the external pressure, the male die 3 moves downward along the guide column 12, under the action of the pre-compression spring 342 and the fourth spring 312, the upper pre-compression block 34 and the protruding block 321 contact the sheet metal part before the upper blade 334, the protruding block 321 installed in the middle of the male die outer sleeve barrel 31 first contacts the two layers of sheet metal parts to be connected, combined with the pushing action of the first spring 211 on the lower pre-compression ring 221, the sheet metal part is tightly pressed on the upper surface of the gasket 2211 of the lower die, the plane movement of the workpiece is limited by the gasket 2211, and the stamping position is ensured to be accurate, at this time, the upper end of the support frame 23 is tightly attached to the lower surface of the sheet metal part, the blade group on the upper end surface of the support frame 23 corresponds to the blade group on the lower end surface of the male die inner barrel 33, so as to carry out subsequent operation, with the continuous downward movement of the male die 3, the pre-compression spring 342 inside the male die inner barrel 33 is compressed, so that the blade group on the lower end surface of the male die inner barrel 33 contacts the upper surface of the sheet metal part, through the joint action of the upper circular blade 333 and the lower circular blade 231, a circular hole is cut out at the center of the sheet metal part, the cut waste is clamped between the upper push block 335 and the lower push block 232, at the same time, through the joint shearing action of the six lower blades 2311 and the upper blades 334, the sheet metal part forms six independent sector-shaped pieces, the outer ring of the sector-shaped piece is connected with the sheet metal part, and the upper pre-compression block 34 is pushed downward from the center under the pushing action of the pre-compression spring 342, so that the independent sector-shaped pieces are bent downward by 90 degrees around the outer ring line.

[0051] The curling forming stage, the male die 3 continues to move downward, at this time, the fourth spring 312 at the upper end of the male die inner barrel 33 is compressed, so that the male die inner barrel 33 no longer moves downward with the male die 3, and only through the action of the pre-compression spring 342 on the upper pre-compression block 34, the preliminary bending of the independent sector-shaped pieces is realized, in the continuous downward movement process of the male die 3, the fifth spring 313 at the rear end of the second base 32 is compressed, when the fifth spring 313 is completely compressed, the second base 32 is pushed downward through the inner end face of the male die outer sleeve barrel 31, and then the protruding block 321 pushes the sheet metal part to move downward, the sheet metal part drives the six independent sector-shaped pieces after bending to move downward, at this time, the lower pre-compression ring 221 keeps a certain pressure on the sheet metal part under the action of the first spring 211, and moves downward at the same time, so as to prevent the sheet metal part from deviating, the lower end of the six independent sector-shaped pieces after bending contacts the conical guide block 233, in the continuous downward movement process of the sheet metal part, the end of the sector-shaped piece is guided by the conical guide block 233 to the entrance of the spiral guide rib 245, the male die 3 continues to drive the sheet metal part to move downward, the sector-shaped piece is curled upward along the contour of the spiral guide rib 245 under the guidance of the spiral guide rib 245, after the curling is completed, the protruding block 321 at the bottom of the male die 3 continues to drive the sheet metal part to move downward, the curled sector-shaped piece drives the linkage ring 242 to move downward, so that the third spring 243 at the bottom of the rotating disc 24 is compressed.

[0052] In the final forming stage, the six guide columns 241 around the rotating disc 24 are guided along the guide grooves 251, so that the rotating disc 24 drives the spiral guide ribs 245 on the guide rib fixing ring 244 to rotate in the process of moving downward, so that the spiral guide ribs 245 are separated from the inside of the independent sector-shaped pieces after being wound, and as the convex block 321 continues to drive the metal part to move downward, the spiral guide ribs 245 are aligned and enter the gap between the lower die upset parts 261, providing space for subsequent compression forming, and finally through the compression between the convex block 321 and the die upset part 261, the wound sector-shaped pieces are compressed and tightly attached to the lower surface of the metal part, thereby completing the fixing of the two metal parts, and then the punch 3 stops moving downward and rises, under the action of each spring, each mechanism returns to the initial position, and the cut-off circular pieces are pushed out through the joint action of the second spring 2321 and the sixth spring 3351, preventing accumulation.

[0053] Finally, it should be pointed out that: first, in the description of the present application, it should be pointed out that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to indicate the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change;

[0054] Secondly: the drawings of the disclosed embodiments of the present application only involve the structures related to the disclosed embodiments of the present application, other structures can refer to the usual design, and in the case of no conflict, the same embodiment and different embodiments of the present application can be combined with each other;

[0055] Finally: the above only describes the preferred embodiments of the present application and is not used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A stamping and riveting die for precision sheet metal part production, comprising a lower die seat (1), characterized in that: The top of the lower die seat (1) is fixedly connected with two guide columns (12), the middle part of the lower die seat (1) is provided with a concave die (2), the inside of the concave die (2) is provided with an inner fixing sleeve (25), the inside of the inner fixing sleeve (25) is provided with a rotating disc (24), the top of the inner fixing sleeve (25) is provided with a support frame (23), the outer side of the rotating disc (24) is provided with a spiral guide rib (245), the upper side of the lower die seat (1) is provided with an upper die seat (11), the bottom of the upper die seat (11) is fixedly connected with two guide sleeves (13), the middle part of the upper die seat (11) is provided with a convex die (3), the top of the convex die (3) is provided with a convex die outer sleeve barrel (31), the inside of the convex die (3) is provided with a convex die inner barrel (33), the outer side of the convex die inner barrel (33) is provided with a convex block (321), the inside of the convex die inner barrel (33) is provided with an upper pre-pressing block (34); The bottom of the concave die (2) is provided with a concave die outer sleeve barrel (21), the inside bottom surface of the concave die outer sleeve barrel (21) is fixedly connected with a first spring (211), the top of the first spring (211) is provided with a concave die inner sleeve barrel (22), the top of the concave die inner sleeve barrel (22) is fixedly connected with a lower pre-pressing ring (221), the top of the lower pre-pressing ring (221) is fixedly connected with ten gaskets (2211); The top center of the support frame (23) is provided with a lower circular blade (231), the outer side of the lower circular blade (231) is fixedly connected with six lower blades (2311), the inner side of the lower circular blade (231) is provided with a lower push block (232), the bottom of the lower push block (232) is fixedly connected with a second spring (2321), the bottom of the support frame (23) is provided with a conical guide block (233); The side of the rotating disc (24) is fixedly connected with six guide columns (241), the outer side of the rotating disc (24) is provided with a linkage ring (242), the inner side surface of the linkage ring (242) and the outer side surface of the guide column (241) are fixedly connected, the upper part of the linkage ring (242) is provided with a guide rib fixing ring (244), six spiral guide ribs (245) are evenly distributed on the side of the guide rib fixing ring (244), the bottom of the rotating disc (24) is fixedly connected with a third spring (243).

2. The stamping and riveting die for producing a precision sheet metal part according to claim 1, characterized in that: The side of the inner fixing sleeve (25) is provided with six guide grooves (251), the bottom of the inner fixing sleeve (25) is provided with a fixed groove (252), the outer side of the fixed groove (252) is fixedly connected with a flat pressing plate (26), the top of the flat pressing plate (26) is fixedly connected with six concave die upsetting pieces (261), the top of the concave die upsetting piece (261) is fixedly connected with three rigid pads (262).

3. The stamping and riveting die for producing a precision sheet metal part according to claim 1, characterized in that: The inside top surface of the punch outer sleeve barrel (31) is fixedly connected with a first base (311), the bottom of the first base (311) is fixedly connected with a fourth spring (312), the outer side of the fourth spring (312) is provided with a fifth spring (313), the top of the fifth spring (313) is fixedly connected with the inside of the punch outer sleeve barrel (31), the inside of the punch outer sleeve barrel (31) is provided with a second base (32), the top of the second base (32) is fixedly connected with the bottom of the fifth spring (313), the top of six protrusions (321) is fixedly connected with the bottom of the second base (32), the top of the punch inner barrel (33) is fixedly connected with the bottom of the fourth spring (312), and the inside of the punch inner barrel (33) is provided with a pre-pressing spring (342).

4. The stamping and riveting die for producing a precision sheet metal part according to claim 3, characterized in that: The inside top surface of the punch inner barrel (33) is provided with six third bases (331), the bottom of the third base (331) is fixedly connected with the top of the pre-pressing spring (342), the inside of the punch inner barrel (33) is provided with six limiting grooves (332), the bottom center of the punch inner barrel (33) is provided with an upper circular blade (333), the outer side of the upper circular blade (333) is fixedly connected with an upper blade (334), the middle of the upper circular blade (333) is provided with an upper push block (335), and the top of the upper push block (335) is fixedly connected with a sixth spring (3351).

5. The stamping and riveting die for producing a precision sheet metal part according to claim 3, characterized in that: The side of the upper pre-pressing block (34) is fixedly connected with a connecting block (341), and the bottom of the pre-pressing spring (342) is fixedly connected with the top of the upper pre-pressing block (34).

Images