CN219851663U

CN219851663U - Punching device for longitudinal beam connecting block

Info

Publication number: CN219851663U
Application number: CN202320920189.0U
Authority: CN
Inventors: 王建庭; 张�诚; 贺永锋; 杨杰; 季常琴; 李娟�
Original assignee: Ningxia Tiandi Northwest Coal Machinery Co ltd
Current assignee: Ningxia Tiandi Northwest Coal Machinery Co ltd
Priority date: 2023-04-21
Filing date: 2023-04-21
Publication date: 2023-10-20
Anticipated expiration: 2033-04-21

Abstract

The utility model discloses a longitudinal beam connecting block punching device, wherein a die mechanism is arranged on a base, a vertical shaft mechanism is movably connected with the base, a punching punch is arranged at one end of the vertical shaft mechanism, the die mechanism is provided with a punching hole and a limiting groove, the punching punch is opposite to the punching hole in a first direction, the vertical shaft mechanism moves in the first direction under the condition that one end of a rectangular square pipe is in limiting fit with the limiting groove, the punching punch moves along with the vertical shaft mechanism, and the punching punch penetrates through the punching hole to punch one end of the rectangular square pipe; under the condition that the other end of the rectangular square tube is in limit fit with the limit groove, the vertical shaft mechanism moves along the first direction, the punching punch moves along with the vertical shaft mechanism, and the punching punch penetrates through the punching hole to punch the other end of the rectangular square tube. According to the scheme, the problems that in the related art, deformation cannot occur at two opposite ends of the rectangular square tube, the milling cutter is difficult to rapidly finish operation, each machining time is long, and cost of a machining cutter is high and production efficiency is low can be solved.

Description

Punching device for longitudinal beam connecting block

Technical Field

The utility model relates to the technical field of stamping dies, in particular to a punching device for a longitudinal beam connecting block.

Background

At present, the conveying of bulk materials in China mainly takes a belt conveyor as a main component, a main machine body is an important component of the belt conveyor, and a longitudinal beam is a main component of the machine body. The production batch of the machine body parts is large, the production efficiency and the production process trend of the machine body parts can keep up with other parts, and the production cost is high or low, so that the influence on the production progress and the manufacturing cost of the whole belt conveyor is very great, the technical innovation of the production process is imperative, the production quality of the machine body parts is improved by keeping up with the diving synergy, the manufacturing cost is reduced, and the machine body product parts are economical and reasonable in manufacturing.

The longitudinal beams of the machine body are connected by rectangular square tubes, the longitudinal beams are connected in series by small-specification rectangular square tube connecting blocks, the connecting blocks are key spare parts for machine body connection, the production batch is large, 4-14×25 long holes on the parts are difficult to process, the coaxiality requirement of the upper holes and the lower holes is high, and the most effective technological measures and processing means are required to be adopted for ensuring the coaxiality.

In the related art, through fixing the rectangle square pipe that cuts in machining center, carry out 4-14 x 25 slot holes's processing to rectangle square pipe through machining center's milling cutter, the milling cutter is through milling the both ends that are opposite to of rectangle square pipe, guarantee the high requirement of upper and lower hole axiality, however in the course of working, in order to guarantee that the both ends that are opposite to of rectangle square pipe can not appear deformation, the milling cutter is difficult to accomplish the operation fast and leads to every processing time to need about 30 minutes, this can cause the problem that the processing cutter cost is higher and production efficiency is lower.

Disclosure of Invention

Based on this, it is necessary to solve the problems of the related art that the milling cutter is difficult to complete the operation rapidly, and about 30 minutes is required for each piece of processing, which causes high cost and low production efficiency of the processing cutter, in order to ensure that the two opposite ends of the rectangular square tube are not deformed.

The utility model provides a longeron connecting block punching device, including base, vertical axis mechanism, mould mechanism and punch pin, mould mechanism set up in on the base, vertical axis mechanism with the base is movable to link to each other, punch pin set up in the one end of vertical axis mechanism, mould mechanism has seted up and has punched a hole and spacing groove, in along first direction, punch pin with it is relative to punch a hole, under the condition that one end of rectangle side pipe with spacing groove spacing cooperation, vertical axis mechanism moves along first direction, punch pin moves along with vertical axis mechanism, punch pin passes punch hole to the one end of rectangle side pipe; under the condition that the other end of the rectangular square tube is in limit fit with the limit groove, the vertical shaft mechanism moves along the first direction, the punching punch moves along with the vertical shaft mechanism, and penetrates through the punching hole to punch the other end of the rectangular square tube, wherein one end of the rectangular square tube and the other end of the rectangular square tube are opposite.

Preferably, the above-mentioned longeron connecting block punching device, mould mechanism includes round pin axle, bottom plate and lower module, is followed in the first direction, lower module with the bottom plate stack in proper order on the base, lower module has been seted up the punching hole, the blanking hole has been seted up to the bottom plate, the blanking hole is followed first direction with it is relative to punch a hole, first pinhole and spacing groove have been seted up to lower module, the bottom plate has been seted up the second pinhole, along in the first direction, first pinhole with the second pinhole is relative, just first pinhole with the second pinhole is coaxial, the round pin axle stretches into in proper order first pinhole with in the second pinhole, just first pinhole with the second pinhole all with round pin axle interference fit.

Preferably, the number of the pins is two, the number of the first pin holes is two, the number of the second pin holes is two, one end of one of the two pins is positioned in one of the two first pin holes and is in interference fit, and the other end of one of the two pins is positioned in one of the second pin holes and is in interference fit; one end of the other of the two pins is located in the other of the two first pin holes and is in interference fit, and the other end of the other of the two pins is located in the other of the second pin holes and is in interference fit.

Preferably, in the above-mentioned punching device for a stringer connecting block, the die mechanism further includes a stripper plate, in the first direction, the stripper plate, the lower die and the bottom plate are sequentially stacked on the base, the stripper plate is provided with a guide hole, in the first direction, the guide hole is opposite to the punched hole, and in the case that one end of the rectangular square tube is in limit fit with the limit groove, the punched punch is in guide fit with the guide hole; under the condition that the other end of the rectangular square tube is in limit fit with the limit groove, the punching punch is in guide fit with the guide hole, and the punching punch penetrates through the punching hole to punch the other end of the rectangular square tube, wherein one end of the rectangular square tube is opposite to the other end of the rectangular square tube.

Preferably, the above-mentioned longeron connecting block punching device, the stripper has seted up the third pinhole, along in the first direction, the third pinhole first pinhole with the second pinhole sets gradually, just the third pinhole first pinhole with the second pinhole is all coaxial, the round pin axle stretches into in proper order the third pinhole first pinhole with in the second pinhole, just the third pinhole first pinhole with the second pinhole all with round pin axle interference fit.

Preferably, the lower module comprises a base body and a supporting block, the supporting block is connected with the base body, the supporting block is provided with the punched holes, the limit groove is formed by the height difference between the supporting block and the base body along the first direction, and one end of the rectangular square pipe is sleeved on the supporting block under the condition that one end of the rectangular square pipe is in limit fit with the limit groove, and the supporting block supports one end of the rectangular square pipe; under the condition that the other end of the rectangular square tube is in limit fit with the limit groove, the other end of the rectangular square tube is sleeved on the supporting block, and the supporting block supports the other end of the rectangular square tube.

Preferably, the vertical shaft mechanism comprises a vertical shaft main body, an upper die holder, a die shank, a base plate and a die insert, wherein the vertical shaft main body is movably connected with the base, the upper die holder is arranged on the vertical shaft main body, a stepped hole is formed in the upper die holder in the first direction, one end of the die shank is located in the stepped hole, one end of the die shank is in limit fit with the stepped hole in the first direction, the base plate is connected with the upper die holder, the base plate is in contact with one end of the die shank, the other end of the die shank is in contact with the vertical shaft main body, the die insert is connected with the base plate, a mounting hole is formed in the first direction in the die insert, and one end of the punching punch is located in the first mounting hole and in limit fit with the first mounting hole.

Preferably, the vertical shaft mechanism further comprises a positioning pin, one end of the positioning pin sequentially penetrates through the upper die base, the base plate and the insert die plate in the first direction, and the upper die base, the base plate and the insert die plate are in positioning fit with the positioning pin.

The technical scheme adopted by the utility model can achieve the following beneficial effects:

in the longitudinal beam connecting block punching device disclosed by the embodiment of the utility model, under the condition that one end of a rectangular square tube is in limit fit with a limit groove, a vertical shaft mechanism moves along a first direction, a punching punch moves along with the vertical shaft mechanism 200, and the punching punch penetrates through the punching to punch one end of the rectangular square tube, so that 2 14 x 25 long holes at one end of the rectangular square tube can be machined, meanwhile, the 2 14 x 25 long holes are punched at one time, and the positioning reference of one end of the rectangular square tube is unchanged in the machining process, so that the coaxiality of the 2 14 x 25 long holes is higher; under the condition that the other end of the rectangular square tube is in limit fit with the limit groove, the vertical shaft mechanism moves along the first direction, the punching punch moves along with the vertical shaft mechanism, and the punching punch penetrates through the punching hole to punch the other end of the rectangular square tube, so that 2 long holes 14×25 at the other end of the rectangular square tube can be machined, meanwhile, the 2 long holes 14×25 are machined at one time, the positioning standard of the other end of the rectangular square tube is unchanged in the machining process, and therefore coaxiality of the 2 long holes 14×25 is high, and one end of the rectangular square tube is opposite to the other end of the rectangular square tube.

The processing of longeron connecting block is realized with punching press technology to above-mentioned structure through vertical axis mechanism, mould mechanism and punch pin, wherein, through the one end and the other end to rectangular square pipe and spacing cooperation in proper order with the spacing groove, realize the benchmark location when its processing, the rethread vertical axis mechanism drives the punch pin and punches a hole to rectangular square pipe's one end and the other end in proper order, this course of working labour saving and time saving can also guarantee that 2 14 x 25 slot holes of rectangular square pipe one end are coaxial and 2 14 x 25 slot holes of rectangular square pipe other end are coaxial, thereby improve production efficiency.

Drawings

Fig. 1 is a schematic structural view of a punching device for a longitudinal beam connecting block according to an embodiment of the present utility model;

fig. 2 is a top view of a punching device for a connecting block of a longitudinal beam according to an embodiment of the present utility model;

FIG. 3 is a cross-sectional view of FIG. 2;

fig. 4 is a front view of a punching device for a stringer connecting block according to an embodiment of the present utility model;

FIG. 5 is a cross-sectional view of FIG. 4 at an angle;

fig. 6 is a cross-sectional view of fig. 4 at another angle.

Wherein: the die comprises a base 100, a vertical shaft mechanism 200, a vertical shaft main body 210, a sliding rail 211, a rack 212, an upper die holder 220, a die shank 230, a base plate 240, a die insert plate 250, a positioning pin 260, a die mechanism 300, a pin shaft 310, a bottom plate 320, a lower die 330, a base 331, a supporting block 332, a stripper 340, a punching punch 400, a punching A, a limiting groove B, a blanking hole C and a guide hole D.

Description of the embodiments

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the utility model. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," "top," "bottom," "top," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 6, the present utility model discloses a stringer connecting block punching device, which includes a base 100, a vertical axis mechanism 200, a die mechanism 300 and a punching punch 400.

The base 100 can provide a mounting basis for the vertical shaft mechanism 200 and the die mechanism 300, the die mechanism 300 is a functional component of the longitudinal beam connecting block punching device for realizing punching a longitudinal beam connecting block, and the vertical shaft mechanism 200 can provide a mounting basis for the punching punch 400.

Specifically, the die mechanism 300 is disposed on the base 100, the vertical axis mechanism 200 is movably connected to the base 100, the punching punch 400 is disposed at one end of the vertical axis mechanism 200, the die mechanism 300 is provided with a punching a and a limiting groove B, and the punching punch 400 is opposite to the punching a along the first direction.

In the use process of the punching device for the longitudinal beam connecting block, a worker needs to place a rectangular square tube in the die mechanism 300, the vertical shaft mechanism 200 moves along the first direction under the condition that one end of the rectangular square tube is in limit fit with the limit groove B, the punching punch 400 moves along with the vertical shaft mechanism 200, the punching punch 400 passes through the punching A to punch a hole A on one end of the rectangular square tube, so that 2 14X 25 long holes on one end of the rectangular square tube can be machined, meanwhile, the 2 14X 25 long holes are punched at one time, and the positioning standard of one end of the rectangular square tube is unchanged in the machining process, so that the coaxiality of the 2 14X 25 long holes is higher; under the condition that the other end of the rectangular square tube is in limit fit with the limit groove B, the vertical shaft mechanism 200 moves along the first direction, the punching punch 400 moves along with the vertical shaft mechanism 200, and the punching punch 400 penetrates through the punching A to punch a hole A on the other end of the rectangular square tube, so that 2 long holes 14×25 on the other end of the rectangular square tube can be machined, meanwhile, the 2 long holes 14×25 are punched at one time, the positioning reference of the other end of the rectangular square tube is unchanged in the machining process, and therefore the coaxiality of the 2 long holes 14×25 is high, and one end of the rectangular square tube is opposite to the other end of the rectangular square tube.

The processing of the longitudinal beam connecting block is realized through the vertical shaft mechanism 200, the die mechanism 300 and the punching punch 400 by a stamping process, wherein the datum positioning during processing is realized by sequentially carrying out spacing matching on one end and the other end of the rectangular square tube and the limiting groove B, and the vertical shaft mechanism 200 drives the punching punch 400 to sequentially carry out punching A on one end and the other end of the rectangular square tube.

In an embodiment of the present utility model, the mold mechanism 300 may include a pin 310, a bottom plate 320, and a lower mold 330, specifically, in a first direction, the lower mold 330 and the bottom plate 320 are sequentially stacked on the base 100, the lower mold 330 is provided with a punched hole a, the bottom plate 320 is provided with a blanking hole C, the blanking hole C is opposite to the punched hole a in the first direction, the lower mold 330 is provided with a first pin hole and a limiting groove B, the bottom plate 320 is provided with a second pin hole, in the first direction, the first pin hole is opposite to the second pin hole, the first pin hole is coaxial with the second pin hole, the pin 310 sequentially extends into the first pin hole and the second pin hole, and the first pin hole and the second pin hole are in interference fit with the pin 310. The above structure improves the connection accuracy of the bottom plate 320 and the lower die 330 by the positioning pin 260, so that the coaxiality of the blanking hole C and the punched hole a is high along the first direction, thereby facilitating the punching punch 400 to push the scraps into the blanking hole C after punching the rectangular square tube.

In a further technical solution, the number of pins 310 may be two, the number of first pin holes may be two, and the number of second pin holes may be two, specifically, one end of one of the two pins 310 is located in one of the two first pin holes and is in interference fit, and the other end of one of the two pins 310 is located in one of the second pin holes and is in interference fit; one end of the other of the two pins 310 is located in the other of the two first pin holes and is interference-fitted, and the other end of the other of the two pins 310 is located in the other of the second pin holes and is interference-fitted, thereby enabling the lower mold 330 to be fixed to the bottom plate 320.

In the embodiment of the present utility model, the mold mechanism 300 may further include a stripper plate 340, specifically, in a first direction, the stripper plate 340, the lower mold 330 and the bottom plate 320 are sequentially stacked on the base 100, the stripper plate 340 is provided with a guide hole D, in the first direction, the guide hole D is opposite to the punching hole a, and in a case that one end of the rectangular square tube is in limit fit with the limit groove B, the punching punch 400 is in guide fit with the guide hole D; under the condition that the other end of the rectangular square tube is in limit fit with the limit groove B, the punching punch 400 is in guide fit with the guide hole D, and the punching punch 400 penetrates through the punching A to punch a hole A on the other end of the rectangular square tube, wherein one end of the rectangular square tube is opposite to the other end of the rectangular square tube. The above structure enables the punching punch 400 to be supported by the guide hole D when moving through the guide hole D, and ensures the accuracy of punching the rectangular square tube by the punching punch 400.

In a further technical solution, the stripper plate 340 may be provided with a third pin hole, specifically, in the first direction, the third pin hole, the first pin hole and the second pin hole are sequentially arranged, and the third pin hole, the first pin hole and the second pin hole are coaxial, the pin shaft 310 sequentially extends into the third pin hole, the first pin hole and the second pin hole, and the third pin hole, the first pin hole and the second pin hole are in interference fit with the pin shaft 310. The above structure can improve the coaxiality of the guide hole D and the punching hole A through the interference fit of the third pin hole, the first pin hole and the second pin hole with the pin shaft 310, so that the processing precision of the punching punch 400 is improved.

In the embodiment of the present utility model, the lower mold 330 may include a base 331 and a supporting block 332, specifically, the supporting block 332 is connected to the base 331, the supporting block 332 is provided with a punched hole a, in a first direction, a height difference between the supporting block 332 and the base 331 forms a limit groove B, one end of a rectangular square tube is sleeved on the supporting block 332 under the condition that one end of the rectangular square tube is in limit fit with the limit groove B, and the supporting block 332 supports one end of the rectangular square tube; under the condition that the other end of the rectangular square tube is in limit fit with the limit groove B, the other end of the rectangular square tube is sleeved on the supporting block 332, and the supporting block 332 supports the other end of the rectangular square tube. The above structure provides support to the rectangular square tube through the supporting block 332, thereby avoiding the waste caused by deformation of the punching punch 400 to the wall of the rectangular square tube when punching a, and improving the qualification rate.

In an embodiment of the present utility model, the vertical axis mechanism 200 may include a vertical axis body 210, an upper die holder 220, a die shank 230, a backing plate 240, and a die insert plate 250, wherein the die shank 230 is a functional device capable of better transmitting a punching force.

Specifically, the vertical shaft main body 210 is movably connected with the base 100, the upper die holder 220 is disposed on the vertical shaft main body 210, the upper die holder 220 is provided with a stepped hole along a first direction, one end of the die shank 230 is located in the stepped hole, and one end of the die shank 230 is in spacing fit with the stepped hole along the first direction, so that shaking of the die shank 230 along the first direction is avoided, the base plate 240 is connected with the upper die holder 220, and the base plate 240 is contacted with one end of the die shank 230, the base plate 240 can avoid damage to the punching punch 400 caused by excessive punching force due to direct contact of the die shank 230 with the punching punch 400, the other end of the die shank 230 is contacted with the vertical shaft main body 210, the die insert 250 is connected with the base plate 240, the die insert 250 is provided with a mounting hole along the first direction, and one end of the punching punch 400 is located in the first mounting hole and is in spacing fit with the die insert 250, so that the punching punch 400 can be fixed relative to the die insert 250, and thus the punching punch 400 can stably punch a rectangular square tube.

In this embodiment of the present utility model, the vertical axis mechanism 200 may further include a positioning pin 260, specifically, in the first direction, one end of the positioning pin 260 sequentially passes through the upper die holder 220, the backing plate 240 and the insert die plate 250, and the upper die holder 220, the backing plate 240 and the insert die plate 250 are in positioning fit with the positioning pin 260, and the positioning pin 260 is used to ensure the relative positions of the insert die plate 250 and the upper die holder 220 and the backing plate 240, so as to ensure the coaxiality of the punching punch 400 and the punching a.

In the embodiment of the present utility model, a driving motor may be disposed on the base 100, a sliding groove is formed on the base 100 along the first direction, and the vertical shaft main body 210 may be provided with a sliding rail 211 and a rack 212, specifically, the sliding rail 211 is matched with the sliding groove, and the rack 212 is matched with the driving end of the driving motor in a meshed manner.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. The utility model provides a longeron connecting block punching device, its characterized in that includes base, vertical axis mechanism, mould mechanism and punch pin, mould mechanism set up in on the base, vertical axis mechanism with the base is movable to link to each other, punch pin set up in the one end of vertical axis mechanism, mould mechanism has seted up and has punched a hole and spacing groove, in along first direction, punch pin with punch a hole relatively, under the condition that one end of rectangle side pipe with spacing groove spacing cooperation, vertical axis mechanism moves along first direction, punch pin moves along with vertical axis mechanism, punch pin passes punch pin to one end of rectangle side pipe punches a hole; under the condition that the other end of the rectangular square tube is in limit fit with the limit groove, the vertical shaft mechanism moves along the first direction, the punching punch moves along with the vertical shaft mechanism, and penetrates through the punching hole to punch the other end of the rectangular square tube, wherein one end of the rectangular square tube and the other end of the rectangular square tube are opposite.

2. The stringer connecting block punching device of claim 1, wherein the die mechanism comprises a pin, a bottom plate and a lower die, in the first direction, the lower die and the bottom plate are sequentially stacked on the base, the lower die is provided with a punching hole, the bottom plate is provided with a blanking hole, the blanking hole is opposite to the punching hole in the first direction, the lower die is provided with a first pin hole and a limiting groove, the bottom plate is provided with a second pin hole, in the first direction, the first pin hole is opposite to the second pin hole, the first pin hole and the second pin hole are coaxial, the pin sequentially extends into the first pin hole and the second pin hole, and the first pin hole and the second pin hole are in interference fit with the pin.

3. The stringer connecting block punching device of claim 2, wherein the pin shafts are two, the first pin holes are two, the second pin holes are two, one end of one of the two pin shafts is located in one of the two first pin holes and is in interference fit, and the other end of one of the two pin shafts is located in one of the second pin holes and is in interference fit; one end of the other of the two pins is located in the other of the two first pin holes and is in interference fit, and the other end of the other of the two pins is located in the other of the second pin holes and is in interference fit.

4. The punching device for the longitudinal beam connecting block according to claim 2, wherein the die mechanism further comprises a stripper plate, the lower die piece and the bottom plate are sequentially stacked on the base in the first direction, the stripper plate is provided with a guide hole, the guide hole is opposite to the punching hole in the first direction, and the punching punch is in guide fit with the guide hole under the condition that one end of the rectangular square tube is in limit fit with the limit groove; under the condition that the other end of the rectangular square tube is in limit fit with the limit groove, the punching punch is in guide fit with the guide hole, and the punching punch penetrates through the punching hole to punch the other end of the rectangular square tube, wherein one end of the rectangular square tube is opposite to the other end of the rectangular square tube.

5. The punching device for the connecting block of the longitudinal beam according to claim 4, wherein the stripper plate is provided with a third pin hole, the first pin hole and the second pin hole are sequentially arranged along the first direction, the third pin hole, the first pin hole and the second pin hole are coaxial, the pin shaft sequentially extends into the third pin hole, the first pin hole and the second pin hole, and the third pin hole, the first pin hole and the second pin hole are in interference fit with the pin shaft.

6. The punching device for the longitudinal beam connecting block according to claim 2, wherein the lower die comprises a base body and a supporting block, the supporting block is connected with the base body, the punching hole is formed in the supporting block, a limit groove is formed by a height difference between the supporting block and the base body along the first direction, one end of the rectangular square pipe is sleeved on the supporting block under the condition that one end of the rectangular square pipe is in limit fit with the limit groove, and one end of the rectangular square pipe is supported by the supporting block; under the condition that the other end of the rectangular square tube is in limit fit with the limit groove, the other end of the rectangular square tube is sleeved on the supporting block, and the supporting block supports the other end of the rectangular square tube.

7. The stringer connecting block punching device according to claim 1, wherein the vertical shaft mechanism includes a vertical shaft main body, an upper die holder, a die shank, a base plate and an insert plate, the vertical shaft main body is movably connected with the base, the upper die holder is disposed on the vertical shaft main body, a stepped hole is formed in the upper die holder along the first direction, one end of the die shank is disposed in the stepped hole, one end of the die shank is in limit fit with the stepped hole along the first direction, the base plate is connected with the upper die holder, the base plate is in contact with one end of the die shank, the other end of the die shank is in contact with the vertical shaft main body, the insert plate is connected with the base plate, a mounting hole is formed in the upper die holder along the first direction, and one end of the punching punch is disposed in the mounting hole and in limit fit with the stepped hole.

8. The stringer attachment block punching device of claim 7, wherein said vertical axis mechanism further comprises a locating pin, one end of said locating pin passing through said upper die holder, said bolster and said die plate in sequence in said first direction, and said upper die holder, said bolster and said die plate each being in locating engagement with said locating pin.