CN211516665U

CN211516665U - Stamping system for air outlet flange assembly

Info

Publication number: CN211516665U
Application number: CN202020108594.9U
Authority: CN
Inventors: 张士明; 谢潮扬; 黄万祥
Original assignee: Hy Chongqing Autoparts Co ltd
Current assignee: Hy Chongqing Autoparts Co ltd
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2020-09-18
Anticipated expiration: 2030-01-17

Abstract

The utility model discloses a stamping system for a vent flange assembly, which comprises a blanking die, a through hole punching die, a hole flanging die, a small hole punching die, a welding clamping device and a shaping die; cutting the raw material by adopting a blanking knife edge of a blanking die to obtain a workpiece; flanging and punching a through hole on the workpiece by adopting a flanging punch and a through hole punch of the through hole punching die; a hole flanging punch of a hole flanging die is adopted to flanging a through hole of the workpiece; punching a small hole on a workpiece by using a small hole punching head of a small hole punching die; welding the bolt penetrating through the small hole on the workpiece by adopting a welding and clamping device; and shaping the workpiece by using a shaping punch of the shaping die. The outlet flange component processed by the system can ensure that the flatness of the first-level surface of the outlet flange component is within 0.1mm and the flatness of the second-level surface is within 0.2 mm. The method has the advantages of stable production quality of the air outlet flange component, high processing efficiency, lower investment cost and the like.

Description

Stamping system for air outlet flange assembly

Technical Field

The utility model relates to a stamping die makes technical field, concretely relates to stamping system for giving vent to anger flange subassembly.

Background

In the production and manufacturing process of automobile parts, a press die is widely used, and a raw material such as metal or nonmetal can be processed into a desired shape. The stamping die comprises an upper die and a lower die, wherein the upper die is installed on a stamping plate of a press machine, the lower die is installed on a bearing plate of the press machine, stamping power of the press machine drives the upper die and the lower die to be opened and closed, and the blank is subjected to plastic deformation and fracture to be processed into a part by applying strong pressure on a metal or nonmetal blank.

Flanges, also known as flange flanges or lugs, are parts of the interconnection between shafts for the connection between pipe ends. The device can be used on an inlet and an outlet of equipment, such as an inlet and an outlet of a speed reducer, namely a speed reducer flange; the device can also be used on pipeline devices, such as an inlet and outlet flange, an air outlet flange and the like. Referring to fig. 1, it is required to manufacture an outlet flange and an assembly for an automobile exhaust system, the outlet flange having a pipe through hole 101 at the middle portion thereof, fixing holes 102 at both ends thereof, and bolts 105 fixedly installed in the fixing holes. The bolts are fixedly arranged in the small fixing holes of the flange and can deform, the accuracy requirement of the air outlet flange component of the type is very high due to the requirements of customers, the flatness of the primary surface 103 of the air outlet flange component is required to be controlled within 0.1mm, and the flatness of the secondary surface 104 of the air outlet flange component is required to be controlled within 0.2 mm. However, the flatness of the primary surface and the secondary surface of the existing air outlet flange assembly of the type is difficult to meet the expected requirement; in order to meet the precision requirement, the traditional machining grinding and reaming processes are still operated manually in the steps of reshaping, deburring and the like, so that the product quality is not stable enough, the efficiency is low, and the investment cost is too high.

SUMMERY OF THE UTILITY MODEL

The aforesaid to prior art existence is not enough, the utility model aims to provide a: how to design a stamping system for giving vent to anger flange subassembly, the processing of six links of blanking mould, punching through-hole mould, flanging dies, punching aperture mould, welding clamping device and plastic mould is handled to metal raw and other materials, can guarantee that the one-level face flatness of the flange subassembly of giving vent to anger that obtains is in 0.1mm, and second grade face flatness is in 0.2 mm. The method has the advantages of stable production quality of the air outlet flange component, high processing efficiency, lower investment cost and the like.

A stamping system for an air outlet flange assembly comprises a blanking die, a through hole stamping die, a hole flanging die, a small hole stamping die, a welding clamping device and a shaping die which are sequentially arranged; a blanking knife edge is arranged in the middle area of the lower die of the blanking die, and a knife edge groove is formed in the position, corresponding to the blanking knife edge, of the upper die of the blanking die and used for cutting raw materials to obtain a workpiece; the punching die is characterized in that a flanging punch is arranged in the middle of the lower die of the punching die, a blanking through hole is formed in the middle of the flanging punch, a flanging groove is formed in the position, corresponding to the flanging punch, of the upper die of the punching die, and a through hole punch is arranged in the position, corresponding to the blanking through hole, of the upper die of the punching die and used for flanging and punching a workpiece; a hole flanging groove is formed in the middle area of the lower die of the hole flanging die, and a hole flanging punch is mounted on the upper die of the hole flanging die at a position corresponding to the hole flanging groove and used for flanging a through hole of a workpiece; a workpiece groove is formed in the middle area of the lower die of the small hole punching die, positioning small holes are formed in two ends of the workpiece groove, and a small hole punching head is mounted at the position, corresponding to the positioning small holes, of the upper die of the small hole punching die and used for punching small holes in workpieces; the welding clamping device is used for welding the bolt penetrating through the small hole on the workpiece; the middle area of the lower die of the shaping die is provided with a shaping groove, and the upper die of the shaping die is provided with a shaping punch at a position corresponding to the shaping groove and used for shaping a workpiece.

Furthermore, the blanking die, the through hole punching die, the hole flanging die, the small hole punching die and the shaping die respectively comprise an upper die holder, a lower die holder, an upper template and a lower template, the upper edge position of the lower die holder is fixedly provided with an outer guide pillar and a lower limiting pillar, the corresponding positions of the upper die holder and the outer guide pillar are fixedly provided with outer guide sleeves, and the corresponding positions of the upper die holder and the lower limiting pillar are fixedly provided with upper limiting pillars; the upper template and the lower template are respectively and fixedly arranged in the middle areas of the upper die holder and the lower die holder.

Furthermore, the blanking die comprises a first upper die plate and a first lower die plate, the blanking knife edge is fixedly arranged in the middle area of the first lower die plate, and the knife edge faces to the knife edge groove on the first upper die plate; at least one group of buoyancy lifting material guide pins are arranged on the first lower template along the raw material feeding direction and used for buoyancy lifting and guiding the raw materials, and notches are formed in the positions, corresponding to the buoyancy lifting material guide pins, of the first upper template.

Further, a first cutting insert is mounted on the first lower template along the raw material feeding direction, the first cutting insert comprises a first insert and a second insert, and the first insert and the second insert are arranged according to preset conditions and used for pre-punching a positioning small hole; and a first round hole is formed in the first upper template at the position corresponding to the first insert and the second insert.

Furthermore, the through hole punching die comprises a second upper die plate and a second lower die plate, the flanging punch is fixedly arranged in the middle area of the second lower die plate and faces the flanging groove on the second upper die plate, and the through hole punch is arranged in the middle of the flanging groove and faces the blanking through hole in the middle of the flanging punch; a first pre-punching small hole positioning column is vertically arranged at two ends in the flanging punch, and a second round hole is arranged at the corresponding position of the second upper template and the first pre-punching small hole positioning column; and a plurality of equal-height sleeves are uniformly arranged at the upper edge of the second lower template.

Further, the hole flanging die comprises a third upper die plate and a third lower die plate, the hole flanging groove is fixedly installed in the middle area of the third lower die plate, and the hole flanging groove faces to a hole flanging punch on the third upper die plate; second pre-punching small hole positioning columns are vertically arranged at two ends in the hole flanging groove, and third round holes are formed in the third upper template and correspond to the second pre-punching small hole positioning columns; and a plurality of equal-height sleeves are uniformly arranged at the upper edge of the third upper template.

Furthermore, the small hole punching die comprises a fourth upper die plate and a fourth lower die plate, and two small hole punching heads are symmetrically arranged on the fourth upper die plate; the workpiece groove is fixedly arranged in the middle area of the upper part of the fourth lower template, a through hole positioning column is vertically arranged in the middle of the workpiece groove, and a fourth round hole is formed in the position, corresponding to the through hole positioning column, of the fourth upper template; and a plurality of equal-height sleeves are uniformly arranged at the upper edge of the fourth lower template.

Furthermore, the blanking die, the through hole punching die, the hole flanging die and the small hole punching die respectively comprise an inner guide pillar and an inner guide sleeve, the inner guide pillars of the blanking die are fixedly arranged at four corners of the first upper template, and the inner guide sleeves of the blanking die are arranged on the first lower template and at positions corresponding to the inner guide pillars of the blanking die; the inner guide posts of the punching die are fixedly arranged at four corners of the second lower template, and the inner guide sleeves of the punching die are arranged on the second upper template and at positions corresponding to the inner guide posts of the punching die; the inner guide posts of the hole flanging die are fixedly arranged at four corners of the third lower template, and the inner guide sleeves of the hole flanging die are arranged on the third upper template and at positions corresponding to the inner guide posts of the hole flanging die; the inner guide pillars of the small hole punching die are fixedly arranged at two ends of the fourth upper die plate, and the inner guide sleeves of the small hole punching die are arranged on the fourth lower die plate and correspond to the inner guide pillars of the small hole punching die.

Furthermore, the small hole punching die further comprises an inner guide sleeve insert block, the inner guide sleeve insert block is provided with a screw hole and a pin hole, the screw hole is used for fixing the inner guide sleeve insert block on the fourth lower template, and the pin hole is used for positioning the inner guide sleeve insert block on the fourth lower template.

Furthermore, the through hole punching die, the hole flanging die, the small hole punching die and the shaping die all comprise four fork templates which are fixedly arranged at four corners of the lower die holder respectively; one end of the fork template is fixedly arranged on the lower die base, and the other end of the fork template is suspended.

Compared with the prior art, the utility model has the advantages of it is following:

the utility model provides a stamping system for air outlet flange component, which adopts the blanking knife edge of the blanking die to cut the raw material to obtain the workpiece; flanging and punching a through hole on the workpiece by adopting a flanging punch and a through hole punch of the through hole punching die; a hole flanging punch of a hole flanging die is adopted to flanging a through hole of the workpiece; punching a small hole on a workpiece by using a small hole punching head of a small hole punching die; welding the bolt penetrating through the small hole on the workpiece by adopting a welding and clamping device; and shaping the flange assembly by using a shaping punch of a shaping die. The flatness of the primary surface of the obtained air outlet flange component can be guaranteed to be within 0.1mm, and the flatness of the secondary surface of the air outlet flange component is guaranteed to be within 0.2 mm. The method has the advantages of stable quality of the air outlet flange component, high processing efficiency, lower investment cost and the like.

Drawings

FIG. 1 is a schematic diagram of a high-precision vent flange assembly of the prior art;

fig. 2 is a system block diagram of a stamping system for an outlet flange assembly according to a first embodiment of the present invention;

fig. 3 is a process flow diagram of a stamping process for the outlet flange assembly according to the second embodiment of the present invention;

fig. 4 is a schematic structural view of a closed state of a blanking die according to the first or second embodiment of the present invention;

fig. 5 is a schematic structural view of a lower die of a blanking die in the first embodiment or the second embodiment of the present invention;

FIG. 6 is a schematic view of the structure of FIG. 5 in the presence of raw materials;

fig. 7 is a schematic structural view of an upper die of a blanking die according to one or second embodiment of the present invention;

fig. 8 is a first state diagram of the blanking die cutting the raw material to obtain the workpiece according to the first or second embodiment of the present invention;

fig. 9 is a schematic structural view of a closed state of a through hole punching die according to the first embodiment or the second embodiment of the present invention;

fig. 10 is a schematic structural view of a lower die of a through-hole punching die in the first embodiment or the second embodiment of the present invention;

FIG. 11 is an enlarged schematic view of a portion of the structure of FIG. 10;

fig. 12 is a schematic structural view of an upper die of a through-hole punching die according to the first embodiment or the second embodiment of the present invention;

FIG. 13 is an enlarged view of a portion of the structure of FIG. 12;

fig. 14 is a second state diagram of the workpiece obtained by punching the through-hole die in the first or second embodiment of the present invention;

fig. 15 is a schematic structural view of a closed state of the hole flanging die according to the first or second embodiment of the present invention;

fig. 16 is a schematic structural view of a lower die of a hole flanging die according to a first embodiment or a second embodiment of the present invention;

fig. 17 is a schematic structural view of an upper die of a hole flanging die according to a first embodiment or a second embodiment of the present invention;

fig. 18 is a third state diagram of the hole flanging die for obtaining the workpiece according to the first or second embodiment of the present invention;

fig. 19 is a schematic structural view of a small hole punching die in a first embodiment or a second embodiment of the present invention in a closed state;

fig. 20 is a schematic view of a first structure of a lower die of a small hole punching die according to the first embodiment or the second embodiment of the present invention;

fig. 21 is a second schematic structural view of a lower die of a small hole punching die according to the first embodiment or the second embodiment of the present invention;

fig. 22 is a schematic structural view of an upper die of a small hole punching die in the first or second embodiment of the present invention;

fig. 23 is a fourth state diagram of the workpiece obtained by punching the small hole die in the first or second embodiment of the present invention;

fig. 24 is a schematic view of a first structure of the welding fixture according to the first or second embodiment of the present invention;

fig. 25 is a second structural schematic view of the welding fixture according to the first or second embodiment of the present invention;

fig. 26 is a schematic structural view of a closed state of a shaping mold according to the first or second embodiment of the present invention;

fig. 27 is a schematic structural view of a lower die of a shaping die in the first embodiment or the second embodiment of the present invention;

FIG. 28 is a schematic view of the structure of FIG. 27 in a state where the workpiece is placed;

fig. 29 is a schematic structural view of an upper die of a shaping die in the first or second embodiment of the present invention;

fig. 30 is a fifth state diagram of the shaping mold for obtaining the workpiece according to the first or second embodiment of the present invention.

Reference numerals:

101. a conduit through hole; 102. a fixed aperture; 103. a first level surface; 104. a secondary surface; 105. a bolt;

201. a first upper die holder; 202. a first backing plate; 203. a first vertical plate; 204. a first lower die holder; 205. a first lower template; 206. a first upper template; 207. a blanking knife edge; 208. a knife edge groove; 209. a material guide pin is lifted; 210. a recess; 211. a first lip insert; 212. a second knife edge insert; 213. a third knife edge insert; 214. a fourth lip insert; 215. a first circular hole; 216. a first outer guide post; 217. a first outer guide sleeve; 218. a first lower outer limiting column; 219. a first upper outer limiting column; 220. a first inner guide post; 221. a first inner guide sleeve; 222. a first workpiece; 223. pre-punching a positioning small hole; 224. raw materials; 225. guiding the true hole;

301. a support plate; 302. a second backing plate; 303. a second lower die holder; 304. a third base plate; 305. a second vertical plate; 306. a second upper die holder; 307. a flanging punch; 308. a flanging groove; 309. a through hole punch; 310. a blanking through hole; 311. a first pre-punched small hole positioning column; 312. a second circular hole; 313. a first equal height sleeve; 314. a second outer guide post; 315. a second outer guide sleeve; 316. a second lower outer limiting column; 317. a second upper outer limiting column; 318. a second inner guide post; 319. a second inner guide sleeve; 320. a first fork template; 321. a second workpiece; 322. a second upper template; 323. a second lower template;

401. a fourth base plate; 402. a third upper die holder; 403. a third upper template; 404. a fifth backing plate; 405. a third lower die holder; 406. flanging a groove; 407. a hole flanging punch; 408. a second pre-punched small hole positioning column; 409. a third circular hole; 410. a second equal-height sleeve; 411. a third outer guide post; 412. a third outer guide sleeve; 413. a third lower outer limiting column; 414. a third upper outer limiting column; 415. a third inner guide post; 416. a third inner guide sleeve; 417. a second binary template; 418. a third lower template; 419. a third workpiece;

501. a fourth upper die holder; 502. a sixth backing plate; 503. a fourth lower die holder; 504. a fourth upper template; 505. a fourth lower template; 506. a small hole punch; 507. a workpiece groove; 508. a through hole positioning column; 509. a fourth circular hole; 510. a fourth outer guide post; 511. a fourth outer guide sleeve; 512. a fourth lower outer limiting column; 513. a fourth upper outer limiting column; 514. a fourth inner guide post; 515. a fourth inner guide sleeve; 516. a third trigeminal template; 517. a third equal height sleeve; 518. an inner guide sleeve insert; 519. a screw hole; 520. pin combining holes; 521. a fourth workpiece;

601. a base; 602. a support plate; 603. a welding table; 604. a first clamp arm; 605. a second clamp arm; 606. a first cylinder; 607. a second cylinder; 608. welding a manipulator; 609. a control switch; 610. welding a needle head; 611. a first bolt through hole;

701. a fifth upper die holder; 702. a fifth upper template; 703. a seventh backing plate; 704. a fifth lower die holder; 705. a fifth lower template; 706. shaping the groove; 707. shaping a punch; 708. a fifth outer guide post; 709. a fifth outer guide sleeve; 710. a fifth lower outer limit column; 711. a fifth upper outer limiting column; 712. a second bolt through hole; 713. a fourth fork template; 714. a fifth workpiece; a fifth circular aperture 715.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

The first embodiment is as follows:

referring to fig. 2 and 4 to 30, a punching system for an air outlet flange assembly comprises a blanking die, a through hole punching die, a hole flanging die, a small hole punching die, a welding clamping device and a shaping die which are sequentially arranged; a blanking knife edge is arranged in the middle area of the lower die of the blanking die, and a knife edge groove is formed in the position, corresponding to the blanking knife edge, of the upper die of the blanking die and used for cutting raw materials to obtain a workpiece; the punching die is characterized in that a flanging punch is arranged in the middle of the lower die of the punching die, a blanking through hole is formed in the middle of the flanging punch, a flanging groove is formed in the position, corresponding to the flanging punch, of the upper die of the punching die, and a through hole punch is arranged in the position, corresponding to the blanking through hole, of the upper die of the punching die and used for flanging and punching a workpiece; a hole flanging groove is formed in the middle area of the lower die of the hole flanging die, and a hole flanging punch is mounted on the upper die of the hole flanging die at a position corresponding to the hole flanging groove and used for flanging a through hole of a workpiece; a workpiece groove is formed in the middle area of the lower die of the small hole punching die, positioning small holes are formed in two ends of the workpiece groove, and a small hole punching head is mounted at the position, corresponding to the positioning small holes, of the upper die of the small hole punching die and used for punching small holes in workpieces; the welding clamping device is used for welding the bolt penetrating through the small hole on the workpiece; the middle area of the lower die of the shaping die is provided with a shaping groove, and the upper die of the shaping die is provided with a shaping punch at a position corresponding to the shaping groove and used for shaping a workpiece.

In the stamping system for the air outlet flange assembly, a metal raw material is fed into a blanking die for cutting and blanking to obtain a first workpiece 222, wherein a blanking edge is a circle of vertical blades, the shape enclosed by the blades is the same as the shape of the first workpiece, and the blanking edge is slightly larger than the first workpiece; the blanking blade 207 and the blade groove 208 are arranged oppositely, and when cutting materials, the blanking blade can be inserted into the blade groove, so that a first workpiece obtained by cutting raw materials is cut. Placing the first workpiece 222 into a through hole punching die to perform workpiece flanging and through hole punching to obtain a second workpiece 321; the flanging punch 307 and the flanging groove 308 are arranged oppositely, the flanging punch is smaller than the flanging groove and the first workpiece, and is smaller than the length of the flanging of the second workpiece, and the length of the flanging can be modified and adjusted according to requirements; the through-hole punch 309 is arranged opposite to the blanking through-hole 310, the through-hole punch is slightly smaller than the blanking through-hole, and waste generated by punching the through-hole falls from the blanking through-hole. Putting the second workpiece 321 into a hole flanging die for workpiece hole flanging to obtain a third workpiece 419; the hole flanging groove 406 and the hole flanging punch 407 are arranged oppositely, the hole flanging punch is smaller than the hole flanging groove and the second workpiece, the smaller part is the length of the hole flanging hole of the third workpiece, and the hole flanging length can be modified and adjusted according to requirements. Putting the third workpiece 419 into a small hole punching die to punch a small hole in the workpiece, so as to obtain a fourth workpiece 521; and (3) placing the third workpiece into the workpiece groove 507, wherein the positioning small hole is arranged opposite to the small hole punch 506, and waste materials generated by punching the small hole fall from the positioning small hole. Penetrating a bolt 105 through a small hole of a flange, and then welding the bolt penetrating through the small hole on a workpiece by adopting a welding and clamping device; after the bolts are welded on the flange, thermal deformation can be generated, and the plane of the flange assembly is seriously influenced. Placing the workpiece welded with the bolts into a shaping die for workpiece shaping to obtain a fifth workpiece 614; the reforming groove 606 and the reforming punch 607 are arranged to face each other. The method comprises the steps of cutting and blanking metal raw materials, flanging and punching through holes, flanging through holes, punching small holes, welding bolts and shaping to obtain the high-precision air outlet flange assembly, wherein the flatness of a primary surface of the air outlet flange assembly can be controlled within 0.1mm, and the flatness of a secondary surface of the air outlet flange assembly can be controlled within 0.2 mm. The air outlet flange component produced by the system has stable quality and high production efficiency.

Referring to fig. 4 to 7, the blanking die includes a first upper die holder 201, a first base plate 202, a first vertical plate 203, a first lower die holder 204, and a first lower die plate 205, the first upper die holder is fixedly mounted on a stamping plate of a press machine through parts such as screws or bolts, the first base plate is fixedly mounted on a bearing plate of the press machine through parts such as screws or bolts, the first lower die holder is mounted on the first base plate through at least two first vertical plates, the first lower die holder, the first base plate, and the first vertical plates enclose a blanking space, and a first workpiece is cut and then falls into the blanking space from a blanking edge. The first lower die holder 204 is provided with holes with the same size as the blanking edge at the position corresponding to the blanking edge, and the first lower die plate 205 is provided with holes with the same size as the blanking edge at the position corresponding to the blanking edge.

The blanking die further comprises a first upper die plate 206, a first outer guide pillar 216, a first outer guide sleeve 217, a first lower outer limit pillar 218, a first upper outer limit pillar 219, a first inner guide pillar 220 and a first inner guide sleeve 221; the first upper die plate is fixedly arranged in the middle area of the first upper die base, and the first lower die plate is fixedly arranged in the middle area of the first lower die base. Four first outer guide pillars and four first lower outer limiting pillars are arranged and distributed at the upper edge of the first lower die holder, and preferably four corners of the first lower die holder are arranged; the first outer guide sleeve and the first upper outer limiting column are respectively provided with four parts which are distributed at the upper edge position of the first upper die holder, and preferably four corners on the first upper die holder; the first outer guide pillars correspond to the first outer guide sleeves one by one, and the first lower outer limiting columns correspond to the first upper outer limiting columns one by one. The first inner guide posts are fixedly arranged at four corners of the first upper template, and the first inner guide sleeves are arranged on the first lower template and correspond to the first inner guide posts. When the blanking die is used for closing the die and cutting a first workpiece, the first outer guide pillar is inserted into the first outer guide sleeve, the first inner guide pillar is inserted into the first inner guide sleeve, the upper die and the lower die are guaranteed to be punched and aligned from an inner angle and an outer angle, and the cutting accuracy of the first workpiece is improved. The first lower outer limiting column and the first upper outer limiting column are used for ensuring that a certain gap exists between the first upper template and the first lower template when no metal raw material exists in the operation process of the blanking die, preventing the first upper template and the first lower template from colliding and protecting a blanking knife edge.

The blanking die further comprises a floating guide pin 209, three groups of floating guide pins are arranged on the first lower die plate along the feeding direction of the raw materials 224, each group of floating guide pins comprises two guide blocks, and the two guide blocks are fixedly arranged on the first lower die plate and symmetrically arranged along the feeding direction of the raw materials; the two guide blocks are in a concave shape, the concave shapes are opposite, and the raw material is placed between the concave shapes of the two guide blocks, so that the raw material is floated and guided. Correspondingly, a notch 210 is formed in the first upper die plate at a position corresponding to the guide block, and when the blanking die is used for closing and cutting the raw material, the guide block is inserted into the notch.

The blanking die further comprises a first cutting edge insert 211, a second cutting edge insert 212, a third cutting edge insert 213, a fourth cutting edge insert 214, a first round hole 215, a pre-punched positioning small hole 223 and a guiding true hole 225; the first cutting edge insert, the second cutting edge insert, the third cutting edge insert and the fourth cutting edge insert all comprise two inserts. A first knife edge insert, a second knife edge insert and a third knife edge insert are fixedly arranged on the first lower template along the raw material feeding direction, and a fourth knife edge insert is fixedly arranged on the first upper die holder and is close to the edge of the first upper template; when the blanking die is closed, the third knife edge insert and the fourth knife edge insert are matched with each other and used for cutting waste materials. The two inserts of the first cutting edge insert and the two inserts of the second cutting edge insert are arranged in a staggered mode, and the two inserts of the first cutting edge insert are used for punching a pre-punched positioning small hole 223 so as to position a first workpiece during hole flanging in the second step; assuming that two inserts of the first cutting edge insert are A and B, and a workpiece I to be cut is provided, after the workpiece I to be cut reaches the insert A, a pre-punching positioning small hole is punched on one side of the workpiece I to be cut by the insert A, the workpiece I to be cut continues to move and then reaches the insert B, and the insert B punches a pre-punching positioning small hole on the other side of the workpiece I to be cut. The second knife edge insert is used for punching a guide true hole 225, a first round hole 215 is arranged at a position, corresponding to the insert, on the first upper template, before the blanking knife edge is cut, the position degree of a pre-punching positioning small hole and the position degree of the outline edge of the blanking knife edge are required to be matched, the position degree is not deviated, if the position degree of the pre-punching positioning small hole and the position degree of the outline edge of the blanking knife edge are deviated, subsequent flanging is influenced, and the cutting precision of a workpiece can be further improved.

Referring to fig. 9 to 13, the through-hole punching die includes a supporting plate 301, a second pad 302, a second lower die holder 303, a third pad 304, a second riser 305, and a second upper die holder 306; the layer board passes through parts fixed mounting such as screw or bolt on the punching press board of press, and the second backing plate passes through parts fixed mounting such as screw or bolt on the bearing plate of press, and second die holder fixed mounting is on the second backing plate, and third backing plate fixed mounting is regional in the layer board middle part, and the second upper die base is installed on the third backing plate through two piece at least second risers. Holes with the same size as the blanking through holes are formed in the positions, corresponding to the blanking through holes, of the second lower die base, and holes with the same size as the blanking through holes are formed in the positions, corresponding to the blanking through holes, of the second lower die plate 323 and the blanking through holes and used for blanking waste materials generated by the blanking through holes.

The punching die further comprises a second upper die plate 322, a second outer guide post 314, a second outer guide sleeve 315, a second lower outer limit post 316, a second upper outer limit post 317, a second inner guide post 318 and a second inner guide sleeve 319; the second upper template is fixedly arranged in the middle area of the second upper die holder, and the second lower template is fixedly arranged in the middle area of the second lower die holder. The two second outer guide columns and the two second lower outer limiting columns are distributed at two ends of the upper edge of the second lower die base; the second outer guide sleeve and the second upper outer limiting column are respectively provided with two parts and distributed at two ends of the upper edge of the second upper die base; the second outer guide posts correspond to the second outer guide sleeves one by one, and the second lower outer limiting posts correspond to the second upper outer limiting posts one by one. The second inner guide posts are fixedly arranged at four corners of the second lower template, and the second inner guide sleeves are arranged on the second upper template and correspond to the second inner guide posts. When the die for punching the through hole is closed, the second outer guide pillar is inserted into the second outer guide sleeve, the second inner guide pillar is inserted into the second inner guide sleeve, the upper die and the lower die are guaranteed to be punched and aligned from an inner angle and an outer angle, and the flanging accuracy and the through hole punching accuracy of the second workpiece are improved. And the second lower outer limiting column and the second upper outer limiting column are used for ensuring that a certain gap exists between the second upper template and the second lower template when the first workpiece is not placed in the running process of the punching die, preventing the second upper template and the second lower template from colliding and protecting the flanging punch and the through hole punch.

The through hole punching die further comprises a first pre-punching small hole positioning column 311, a first equal-height sleeve 313 and a first fork die plate 320, the first pre-punching small hole positioning column is vertically and fixedly arranged at two ends in the flanging punching head, the first pre-punching small hole positioning column is slightly smaller than a pre-punching positioning small hole of a first workpiece, a second round hole 312 is arranged in the second upper die plate corresponding to the first pre-punching small hole positioning column, the first pre-punching small hole positioning columns at two ends in the flanging punching head are used for limiting and positioning the first workpiece, and machining precision is improved. A plurality of first equal-height sleeves are uniformly arranged at the upper edge of the second lower template, and six sleeves are preferably arranged; the second upper template and the second lower template are further limited through the first equal-height sleeve, so that the second upper template and the second lower template are prevented from colliding, and the flanging punch and the through hole punch can be further protected. Four first fork templates are arranged and are respectively fixedly arranged at four corners on the second lower die holder; one end of the first fork template is fixedly arranged on the second lower die holder, and the other end of the fork template is suspended in the air; convenient transportation, fork truck can fork this position, transports.

Referring to fig. 15 to 17, the hole flanging die includes a fourth shim plate 401, a third upper die holder 402, a third upper die plate 403, a fifth shim plate 404, a third lower die holder 405, and a third lower die plate 418; the fourth backing plate is fixedly installed on a stamping plate of the press through parts such as screws or bolts, the fifth backing plate is fixedly installed on a bearing plate of the press through parts such as screws or bolts, the third upper die base is fixedly installed on the fourth backing plate, the third upper die plate is fixedly installed in the middle area of the third upper die base, the third lower die base is fixedly installed on the fifth backing plate, and the third lower die plate is fixedly installed in the middle area of the third lower die base.

The hole flanging die further comprises a third outer guide pillar 411, a third outer guide sleeve 412, a third lower outer limiting pillar 413, a third upper outer limiting pillar 414, a third inner guide pillar 415 and a third inner guide sleeve 416; the third outer guide pillar and the third lower outer limiting pillar are respectively provided with two parts and distributed at two ends of the upper edge of the third lower die holder; the third outer guide sleeve and the third upper outer limiting column are respectively provided with two parts and distributed at two ends of the upper edge of the third upper die base; the third outer guide columns correspond to the third outer guide sleeves one by one, and the third lower outer limiting columns correspond to the third upper outer limiting columns one by one. The third inner guide columns are fixedly arranged at four corners of the third lower template, and the third inner guide sleeves are arranged on the third upper template and correspond to the third inner guide columns. When the hole flanging die is closed, the third outer guide pillar is inserted into the third outer guide sleeve, the third inner guide pillar is inserted into the third inner guide sleeve, the upper die and the lower die are guaranteed to be punched and aligned from the inner angle and the outer angle, and the accuracy of hole flanging of the third workpiece is improved. And the third lower outer limiting column and the third upper outer limiting column are used for ensuring that a certain gap exists between the third upper template and the third lower template when a second workpiece is not placed in the running process of the punching die, preventing collision between the third upper template and the third lower template and protecting the hole flanging punch.

The hole flanging die further comprises a second pre-punching small hole positioning column 408, a second equal-height sleeve 410 and a second fork template 417, the second pre-punching small hole positioning column is vertically and fixedly arranged at two ends in the hole flanging groove, the second pre-punching small hole positioning column is slightly smaller than a pre-punching positioning small hole of the first workpiece, a third round hole 409 is formed in the third upper template and corresponds to the second pre-punching small hole positioning column, the second workpiece is limited and positioned through the second pre-punching small hole positioning columns at two ends in the hole flanging groove, and machining precision is improved. A plurality of second equal-height sleeves are uniformly arranged at the upper edge of the third upper template, and six sleeves are preferably arranged; the third upper template and the third lower template are further limited by the equal-height sleeve of the second, so that the third upper template and the third lower template are prevented from colliding, and the hole flanging punch head can be further protected. Four second fork templates are arranged and are respectively fixedly arranged at four corners on the third lower die holder; one end of the second fork template is fixedly arranged on the third lower die holder, and the other end of the fork template is suspended in the air; convenient transportation, fork truck can fork this position, transports. When the through hole is turned over, the through hole is placed in the middle for positioning, the pre-punched small holes are positioned at two sides, and the hole in the middle is turned over.

Referring to fig. 19 to 23, the small hole punching die includes a fourth upper die holder 501, a sixth backing plate 502, a fourth lower die holder 503, a fourth upper die plate 504 and a fourth lower die plate 505; the fourth upper die base is fixedly installed on a stamping plate of the press machine through parts such as screws or bolts, the sixth base plate is fixedly installed on a bearing plate of the press machine through parts such as screws or bolts, the fourth lower die base is fixedly installed on the sixth base plate, the fourth lower die plate is fixedly installed in the middle area of the fourth lower die base, and the fourth upper die plate is fixedly installed in the middle area of the fourth upper die base. Holes with the same size as the positioning small holes are formed in the corresponding positions of the fourth lower die base and the positioning small holes, and holes with the same size as the positioning small holes are formed in the corresponding positions of the fourth lower die plate and the positioning small holes, so that waste materials generated by punching the small holes can be conveniently dropped.

The small hole punching die further comprises a fourth outer guide pillar 510, a fourth outer guide sleeve 511, a fourth lower outer limiting pillar 512, a fourth upper outer limiting pillar 513, a fourth inner guide pillar 514 and a fourth inner guide sleeve 515; the fourth outer guide pillar and the fourth lower outer limiting pillar are respectively provided with two parts and distributed at two ends of the upper edge of the fourth lower die holder; the fourth outer guide sleeve and the fourth upper outer limiting column are respectively provided with two parts and distributed at two ends of the upper edge of the fourth upper die base; the fourth outer guide pillars correspond to the fourth outer guide sleeves one by one, and the fourth lower outer limiting columns correspond to the fourth upper outer limiting columns one by one. The fourth inner guide pillars are fixedly arranged at two ends of the fourth upper template, and the fourth inner guide sleeves are arranged on the fourth lower template and correspond to the fourth inner guide pillars. When the small hole punching die is closed, the fourth outer guide pillar is inserted into the fourth outer guide sleeve, the fourth inner guide pillar is inserted into the fourth inner guide sleeve, the upper die and the lower die are guaranteed to be punched and aligned from an inner angle and an outer angle, and the accuracy of punching a small hole by the fourth workpiece is improved. And the fourth lower outer limiting column and the fourth upper outer limiting column are used for ensuring that a certain gap exists between the fourth upper template and the fourth lower template when a third workpiece is not placed in the operation process of the small hole punching die, preventing collision between the fourth upper template and the fourth lower template and protecting the small hole punch.

The small hole punching die further comprises a through hole positioning column 508, a third equal-height sleeve 517, a third forked template 516 and an inner guide sleeve insert 518, the through hole positioning column is vertically and fixedly arranged in the middle of the workpiece groove, a fourth round hole 509 is arranged on the fourth upper template and corresponds to the through hole positioning column, the through hole positioning column is slightly smaller than the fourth round hole, a third workpiece is placed in the workpiece groove, the through hole positioning column is used for limiting and positioning, and machining precision is improved. The inner guide sleeve insert is used for limiting and fixing a fourth inner guide sleeve, the inner guide sleeve insert is provided with a screw hole 519 and a pin hole 520, the screw hole is used for fixing the inner guide sleeve insert on a fourth lower template, and the pin hole is used for positioning the inner guide sleeve insert on the fourth lower template. The third equal-height sleeves are uniformly arranged at four corners of the upper edge of the fourth lower template; the fourth upper template and the fourth lower template are further limited by the third equal-height sleeve, so that collision between the fourth upper template and the fourth lower template is prevented, and the small-hole punch can be further protected. The fourth Y-shaped template is provided with four third Y-shaped templates which are fixedly arranged at four corners of the fourth lower die base respectively; one end of a third fork template is fixedly arranged on a fourth lower die seat, and the other end of the fork template is suspended in the air; convenient transportation, fork truck can fork this position, transports. And finely punching the pre-filled small holes, and punching the pre-punched small holes again to the required size.

Referring to fig. 24 and 25, the welding clamping device includes a base 601, a support plate 602, a welding table 603, a first clamping arm 604, a second clamping arm 605, a first air cylinder 606, a second air cylinder 607, a welding manipulator 608 and a control switch 609, wherein the control switch is respectively connected with the first air cylinder and the second air cylinder in a pneumatic manner, and the control switch is mounted on the support plate. The vertical fixed mounting of backup pad is on the base, and welding bench fixed mounting is in the backup pad, and the welding bench middle part is regional to be equipped with two first bolt through-holes 611, and the bolt passes the flange aperture, then places in the bolt through-hole, fixes a position the flange subassembly. The first cylinder and the second cylinder are respectively arranged at two ends of the welding table, one end of the first clamping arm is connected with the first cylinder, and the other end of the first clamping arm is suspended and is positioned right above one bolt through hole; one end of the second clamping arm is connected with the second cylinder, and the other end of the second clamping arm is suspended and is positioned right above the other bolt through hole. The welding robot has a welding tip 610 mounted on the welding end thereof, and can perform welding more finely using the welding tip since the contact surface between the bolt and the flange is relatively small. The welding robot belongs to the prior art and will not be described more than here.

Referring to fig. 26 to 29, the shaping mold includes a fifth upper mold base 701, a fifth upper mold plate 702, a seventh backing plate 703, a fifth lower mold base 704, and a fifth lower mold plate 705; the fifth upper die base is fixedly installed on a stamping plate of the press through parts such as screws or bolts, parts such as seventh backing plate screws or bolts are fixedly installed on a bearing plate of the press, the fifth lower die base is fixedly installed on the seventh backing plate, the fifth upper die plate is fixedly installed in the middle area of the fifth upper die base, the fifth lower die base is fixedly installed on the seventh backing plate, and the fifth lower die plate is fixedly installed in the middle area of the fifth lower die base.

The shaping mold further includes a fifth outer guide post 708, a fifth outer guide sleeve 709, a fifth lower outer limit post 710 and a fifth upper outer limit post 711; the fifth outer guide pillar and the fifth lower outer limiting pillar are respectively provided with two parts and distributed at two ends of the upper edge of the fifth lower die seat; the fifth outer guide sleeve and the fifth upper outer limiting column are respectively provided with two parts and distributed at two ends of the upper edge of the fifth upper die base; the fifth outer guide pillars correspond to the fifth outer guide sleeves one by one, and the fifth lower outer limiting pillars correspond to the fifth upper outer limiting pillars one by one. When the shaping die is closed, the fifth outer guide pillar is inserted into the fifth outer guide sleeve, so that the upper die and the lower die are aligned in a stamping mode, and the shaping effect of shaping the fifth workpiece is improved. And the fifth lower outer limiting column and the fifth upper outer limiting column are used for ensuring that a certain gap exists between the fifth upper template and the fifth lower template when a fourth workpiece is not placed in the operation process of the shaping die, preventing collision between the fifth upper template and the fifth lower template and protecting the shaping punch.

The shaping die further comprises a second bolt through hole 712 and a fourth fork template 713, the second bolt through hole is used for placing a bolt of the flange assembly, the flange assembly is positioned and fixed, a fifth round hole is formed in the shaping punch and corresponds to the second bolt through hole, and when the shaping die is closed, a bolt cap is inserted into the fifth round hole. Four fourth fork templates are arranged and are respectively fixedly arranged at four corners of the fifth lower die holder; one end of the fourth fork template is fixedly arranged on the fifth lower die holder, and the other end of the fork template is suspended in the air; convenient transportation, fork truck can fork this position, transports. And bolts of the flange assembly are placed into the second bolt through holes to position the flange assembly, and the upper die and the lower die of the shaping die are closed to achieve the purpose of leveling.

Above-mentioned a stamping system for flange subassembly gives vent to anger, adopt blanking mould, towards the through-hole mould, the flanging die, towards the aperture mould, six devices of welding clamping device and plastic mould come to carry out processing to metal raw and other materials, through to the rational design of mould structure, the precision of flange subassembly gives vent to anger is guaranteed to control punching press resilience and welding thermal deformation, can be with flange subassembly one-level face plane degree control of giving vent to anger in 0.1mm, second grade face plane degree control is in 0.2mm, can not only reach anticipated plane degree and required precision, and the manpower has been saved, product production speed is 2 ~ 5 times of traditional manual operation, product quality is more stable than manual operation simultaneously, the disqualification rate is reduced, replace traditional machine tooling grinding and reaming technology and save investment cost.

Example two:

a stamping process for an air outlet flange assembly comprises the following steps:

the first process step: blanking, wherein a blanking knife edge is arranged in the middle area of a lower die of a blanking die, knife edge grooves are formed in positions of an upper die of the blanking die corresponding to the blanking knife edge, and a workpiece is obtained by cutting raw materials through the blanking die;

and a second step: punching a through hole and a flanging, wherein a flanging punch is arranged in the middle area of a lower die of the through hole punching die, a blanking through hole is arranged in the middle of the flanging punch, a flanging groove is arranged at the position, corresponding to the flanging punch, of an upper die of the through hole punching die, a through hole punch is arranged at the position, corresponding to the blanking through hole, of the upper die of the through hole punching die, and the workpiece is flanged and punched through the through hole punching die;

and a third step of: a hole flanging groove is formed in the middle area of the lower die of the hole flanging die, a hole flanging punch is mounted on the upper die of the hole flanging die at a position corresponding to the hole flanging groove, and a through hole is flanged on a workpiece through the hole flanging die;

step four: punching small holes, wherein a workpiece groove is arranged in the middle area of a lower die of a small hole punching die, positioning small holes are arranged at two ends in the workpiece groove, a small hole punching head is arranged at the position, corresponding to the positioning small holes, of an upper die of the small hole punching die, and the small holes are punched on the workpiece through the small hole punching die;

and a fifth step: welding, namely welding the bolt penetrating through the small hole on a workpiece by adopting a welding and clamping device;

a sixth procedure: and shaping, wherein a shaping groove is formed in the middle area of the lower die of the shaping die, a shaping punch is arranged at the position, corresponding to the shaping groove, of the upper die of the shaping die, and the workpiece is shaped through the shaping die.

In the stamping process for the air outlet flange assembly, a metal raw material is fed into a blanking die to be cut and blanked, so that a first workpiece 222 is obtained, wherein a blanking edge is a circle of vertical blades, the shape enclosed by the blades is the same as the shape of the first workpiece, and the blanking edge is slightly larger than the first workpiece; the blanking blade 207 and the blade groove 208 are arranged oppositely, and when cutting materials, the blanking blade can be inserted into the blade groove, so that a first workpiece obtained by cutting raw materials is cut. Placing the first workpiece 222 into a through hole punching die to perform workpiece flanging and through hole punching to obtain a second workpiece 321; the flanging punch 307 and the flanging groove 308 are arranged oppositely, the flanging punch is smaller than the flanging groove and the first workpiece, and is smaller than the length of the flanging of the second workpiece, and the length of the flanging can be modified and adjusted according to requirements; the through-hole punch 309 is arranged opposite to the blanking through-hole 310, the through-hole punch is slightly smaller than the blanking through-hole, and waste generated by punching the through-hole falls from the blanking through-hole. Putting the second workpiece 321 into a hole flanging die for workpiece hole flanging to obtain a third workpiece 419; the hole flanging groove 406 and the hole flanging punch 407 are arranged oppositely, the hole flanging punch is smaller than the hole flanging groove and the second workpiece, the smaller part is the length of the hole flanging hole of the third workpiece, and the hole flanging length can be modified and adjusted according to requirements. Putting the third workpiece 419 into a small hole punching die to punch a small hole in the workpiece, so as to obtain a fourth workpiece 521; and (3) placing the third workpiece into the workpiece groove 507, wherein the positioning small hole is arranged opposite to the small hole punch 506, and waste materials generated by punching the small hole fall from the positioning small hole. Penetrating a bolt 105 through a small hole of a flange, and then welding the bolt penetrating through the small hole on a workpiece by adopting a welding and clamping device; after the bolts are welded on the flange, thermal deformation can be generated, and the plane of the flange assembly is seriously influenced. Placing the workpiece welded with the bolts into a shaping die for workpiece shaping to obtain a fifth workpiece 614; the reforming groove 606 and the reforming punch 607 are arranged to face each other. The method comprises the steps of cutting and blanking metal raw materials, flanging and punching through holes, flanging through holes, punching small holes, welding bolts and shaping to obtain the high-precision air outlet flange assembly, wherein the flatness of a primary surface of the air outlet flange assembly can be controlled within 0.1mm, and the flatness of a secondary surface of the air outlet flange assembly can be controlled within 0.2 mm. The air outlet flange component produced by the system has stable quality and high production efficiency.

Above-mentioned stamping process for giving vent to anger flange subassembly, adopt blanking mould, towards the through-hole mould, the flanging die, towards the aperture mould, six devices of welding clamping device and plastic mould come to carry out processing to metal raw and other materials, through to the rational design of mould structure, the precision of the flange subassembly of giving vent to anger is guaranteed to control punching press resilience and welding thermal deformation, can be with the control of the flange subassembly one-level face plane degree of giving vent to anger in 0.1mm, the control of second grade face plane degree is in 0.2mm, can not only reach anticipated plane degree and required precision, and saved the manpower, product production speed is 2 ~ 5 times of traditional manual operation, product quality is more stable than manual operation simultaneously, reduce the disqualification rate, replace traditional machine tooling grinding and reaming technology and save investment cost.

Finally, it is noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A stamping system for an air outlet flange component is characterized by comprising a blanking die, a through hole stamping die, a hole flanging die, a small hole stamping die, a welding clamping device and a shaping die which are sequentially arranged; a blanking knife edge is arranged in the middle area of the lower die of the blanking die, and a knife edge groove is formed in the position, corresponding to the blanking knife edge, of the upper die of the blanking die and used for cutting raw materials to obtain a workpiece; the punching die is characterized in that a flanging punch is arranged in the middle of the lower die of the punching die, a blanking through hole is formed in the middle of the flanging punch, a flanging groove is formed in the position, corresponding to the flanging punch, of the upper die of the punching die, and a through hole punch is arranged in the position, corresponding to the blanking through hole, of the upper die of the punching die and used for flanging and punching a workpiece; a hole flanging groove is formed in the middle area of the lower die of the hole flanging die, and a hole flanging punch is mounted on the upper die of the hole flanging die at a position corresponding to the hole flanging groove and used for flanging a through hole of a workpiece; a workpiece groove is formed in the middle area of the lower die of the small hole punching die, positioning small holes are formed in two ends of the workpiece groove, and a small hole punching head is mounted at the position, corresponding to the positioning small holes, of the upper die of the small hole punching die and used for punching small holes in workpieces; the welding clamping device is used for welding the bolt penetrating through the small hole on the workpiece; the middle area of the lower die of the shaping die is provided with a shaping groove, and the upper die of the shaping die is provided with a shaping punch at a position corresponding to the shaping groove and used for shaping a workpiece.

2. The stamping system according to claim 1, wherein the blanking die, the through hole stamping die, the hole flanging die, the small hole stamping die and the shaping die each comprise an upper die holder, a lower die holder, an upper die plate and a lower die plate, an outer guide pillar and a lower limiting pillar are fixedly arranged at the upper edge position of the lower die holder, an outer guide sleeve is fixedly arranged at the corresponding position of the upper die holder and the outer guide pillar, and an upper limiting pillar is fixedly arranged at the corresponding position of the upper die holder and the lower limiting pillar; the upper template and the lower template are respectively and fixedly arranged in the middle areas of the upper die holder and the lower die holder.

3. The stamping system of claim 2, wherein the blanking die comprises a first upper die plate and a first lower die plate, the blanking edge is fixedly mounted in a central region of the first lower die plate, and the edge faces the edge groove on the first upper die plate; at least one group of buoyancy lifting material guide pins are arranged on the first lower template along the raw material feeding direction and used for buoyancy lifting and guiding the raw materials, and notches are formed in the positions, corresponding to the buoyancy lifting material guide pins, of the first upper template.

4. The stamping system according to claim 3, wherein the first lower die plate is provided with a first insert in a raw material feeding direction, the first insert comprises a first insert and a second insert, and the first insert and the second insert are arranged according to preset conditions and used for pre-stamping the positioning small hole; and a first round hole is formed in the first upper template at the position corresponding to the first insert and the second insert.

5. The punching system of claim 2, wherein the through-hole punching die comprises a second upper die plate and a second lower die plate, the flanging punch is fixedly mounted in the middle area of the second lower die plate and faces the flanging groove on the second upper die plate, and the through-hole punch is arranged in the middle of the flanging groove and faces the blanking through-hole in the middle of the flanging punch; a first pre-punching small hole positioning column is vertically arranged at two ends in the flanging punch, and a second round hole is arranged at the corresponding position of the second upper template and the first pre-punching small hole positioning column; and a plurality of equal-height sleeves are uniformly arranged at the upper edge of the second lower template.

6. The stamping system of claim 2, wherein the hole flanging die comprises a third upper die plate and a third lower die plate, the hole flanging groove is fixedly arranged in the middle area of the third lower die plate, and the hole flanging groove faces the hole flanging punch on the third upper die plate; second pre-punching small hole positioning columns are vertically arranged at two ends in the hole flanging groove, and third round holes are formed in the third upper template and correspond to the second pre-punching small hole positioning columns; and a plurality of equal-height sleeves are uniformly arranged at the upper edge of the third upper template.

7. The punching system according to claim 2, wherein the small hole punching die comprises a fourth upper die plate and a fourth lower die plate, and two small hole punching heads are arranged on the fourth upper die plate symmetrically; the workpiece groove is fixedly arranged in the middle area of the upper part of the fourth lower template, a through hole positioning column is vertically arranged in the middle of the workpiece groove, and a fourth round hole is formed in the position, corresponding to the through hole positioning column, of the fourth upper template; and a plurality of equal-height sleeves are uniformly arranged at the upper edge of the fourth lower template.

8. The stamping system according to any one of claims 3 to 7, wherein the blanking die, the through hole stamping die, the hole flanging die and the small hole stamping die each comprise an inner guide post and an inner guide sleeve, the inner guide post of the blanking die is fixedly arranged at four corners of the first upper die plate, and the inner guide sleeve of the blanking die is arranged on the first lower die plate and at a position corresponding to the inner guide post of the blanking die; the inner guide posts of the punching die are fixedly arranged at four corners of the second lower template, and the inner guide sleeves of the punching die are arranged on the second upper template and at positions corresponding to the inner guide posts of the punching die; the inner guide posts of the hole flanging die are fixedly arranged at four corners of the third lower template, and the inner guide sleeves of the hole flanging die are arranged on the third upper template and at positions corresponding to the inner guide posts of the hole flanging die; the inner guide pillars of the small hole punching die are fixedly arranged at two ends of the fourth upper die plate, and the inner guide sleeves of the small hole punching die are arranged on the fourth lower die plate and correspond to the inner guide pillars of the small hole punching die.

9. The stamping system of claim 8, wherein the small hole stamping die further comprises an inner guide sleeve insert, the inner guide sleeve insert is provided with a screw hole and a dowel hole, the screw hole is used for fixing the inner guide sleeve insert on the fourth lower die plate, and the dowel hole is used for positioning the inner guide sleeve insert on the fourth lower die plate.

10. The stamping system according to claim 2, wherein the through-hole stamping die, the hole flanging die, the small-hole stamping die and the shaping die each comprise four fork die plates, and the four fork die plates are fixedly mounted at four corners of the lower die holder respectively; one end of the fork template is fixedly arranged on the lower die base, and the other end of the fork template is suspended.