阅读说明：本技术 一种汽车翼子板模具 (Automobile fender mould ) 是由 奉先华 于 2020-04-09 设计创作，主要内容包括：本发明涉及模具技术领域,具体涉及一种汽车翼子板模具,该汽车翼子板模具包括底座、凸模板、凹模板和控制器；所述底座上设有模座,模座中设有凸模板,模座内设置的凸模板为对称的两个；由于汽车翼子板需要多道工序配合模具进行加工,在工序切换之间的换模操作增加了不必要加工时间的浪费,降低了生产效率及模具的利用率；故此,本发明通过设置模座上两个对称的凸模板,配合安装在模座上的丝杠副,在汽车的翼子板左右件并模加工后,控制丝杠副带动两个模板分开,继续在凸模板上进行后续修边的工序,避免了将翼子板更换到修边模具上的操作,提高了翼子板的生产效率,从而提升了汽车翼子板模具的使用率。(The invention relates to the technical field of dies, in particular to an automobile fender die which comprises a base, a convex die plate, a concave die plate and a controller, wherein the convex die plate is arranged on the base; the base is provided with a die holder, the die holder is internally provided with two symmetrical convex die plates; because the automobile fender needs a plurality of processes to be matched with the die for processing, the die change operation between the process switching increases the waste of unnecessary processing time, and reduces the production efficiency and the utilization rate of the die; therefore, the two symmetrical convex templates on the die holder are arranged, the screw pair is arranged on the die holder in a matched mode, after the left and right parts of the fender of the automobile are subjected to die processing, the screw pair is controlled to drive the two templates to be separated, and the subsequent trimming process is continuously carried out on the convex templates, so that the operation of replacing the fender on the trimming die is avoided, the production efficiency of the fender is improved, and the utilization rate of the automobile fender die is improved.)

1. An automobile fender mould comprises a base (1), a convex mould plate (2), a concave mould plate (3) and a controller; a die holder (4) is arranged on the base (1), a convex die plate (2) is arranged in the die holder (4), and a supporting plate (5) is arranged above the die holder (4); a concave template (3) is arranged at the bottom of the supporting plate (5); the method is characterized in that: the die holder (4) is of a box-shaped structure, the die holders (4) are internally provided with two symmetrical convex die plates (2) which are correspondingly processed for fenders on the left side and the right side of the automobile; the bottom in the die holder (4) is provided with slide rails (41), and a screw pair (411) is arranged between the slide rails (41); the male template (2) is slidably mounted on the sliding rail (41), and the bottom of the male template (2) is provided with a screw block (21); the screw block (21) is arranged on the screw rod pair (411), and the screw block (21) is driven by the screw rod pair (411) to rotate so that the die holder (4) generates relative movement; a servo motor (412) is arranged on one side, extending out of the die holder (4), of the lead screw pair (411), and the servo motor (412) drives the two convex templates (2) to move on the sliding rail (41) through the lead screw pair (411); a guide sleeve (11) is arranged on the base (1), and a guide rod (12) is arranged in the guide sleeve (11); the supporting plate (5) is arranged on the top of the guide rod (12), and the concave template (3) on the supporting plate (5) is matched with the convex template (2) to forge and press the fender through the up-and-down movement of the guide rod (12); the controller controls operation of the servo motor (412).

2. The automobile fender mold of claim 1, wherein: a support (13) is arranged on the base (1); the die holder (4) is arranged on the base (1) through the support of the support (13); the top of the support (13) is provided with a ball head (131), a ball seat (132) is arranged on the die holder (4) corresponding to the ball head (131), and the ball head (131) is in sliding contact with the ball seat (132); the screw thread (133) is arranged on the circumferential direction of the lower portion of the support (13), and the support (13) is meshed with the base (1) through the screw thread (133).

3. The automobile fender mold of claim 1, wherein: an auxiliary ball head (121) is arranged at the top of the guide rod (12), and an auxiliary ball seat (122) is arranged on the supporting plate (5) corresponding to the auxiliary ball head (121); the bottom of the guide sleeve (11) is provided with an air cavity, and a pressure regulating valve (111) is arranged on the part of the air cavity, which leads to the outer side of the guide sleeve (11).

4. The automobile fender mold of claim 1, wherein: the convex template (2) is provided with a bulge (21), and the bulge (21) is positioned at the transition position of the convex body of the convex template (2) and the plane of the convex template (2).

5. The automobile fender mold of claim 1, wherein: the supporting plate (5) is provided with a cutting template (51), the cutting template (51) is in a long strip shape, and the cutting template (51) is filled in a gap between the two concave templates (3); two ends of the cutting template (51) are provided with limiting blocks (52), and limiting grooves (53) are formed in the limiting blocks (52); the cutting template (51) penetrates through the middle part of the supporting plate (5) and moves up and down along the limiting groove (53).

6. The automobile fender mold of claim 5, wherein: the top of the cutting template (51) is provided with a spring (511), the spring (511) is positioned at two ends of the cutting template (51), one end of the spring (511) is fixed on the cutting template (51), and the other end of the spring is fixed at the top of the limiting groove (53).

Technical Field

The invention relates to the technical field of dies, in particular to an automobile fender die.

Background

The fender is an outer plate of a vehicle body for covering wheels, and is named because the shape and the position of the part on the old vehicle body are similar to bird wings; the fender is used as one of automobile covering parts, and sand, stone and slurry rolled up by wheels are prevented from splashing to the bottom of a carriage by the fender in the running process of an automobile; compared with a common stamping part, the stamping part has the characteristics of thin material, complex shape, large structure size, high surface quality requirement and high production cost; for a description of the processing of automobile fenders, see: liu Ching, a fender stamping process and forming analysis [ J ], a forging technology, 2014(No.4) 20-24.

In the existing processing process of the automobile fender, the forming of the composite contents of bending, bulging and deep drawing is a first process, all spatial curved surface shapes, ribs and ridge characteristics of the fender need to be processed in the process, otherwise, the defect of an impact line in the processing is easily caused, and the forming quality of the fender is influenced; meanwhile, the production cycle of the fender is longer due to the flows of multiple processes, and the special dies for the processes are more in demand, so that the processing of the automobile fender has improved space.

Disclosure of Invention

In order to make up for the defects of the prior art, the invention provides the automobile fender mold, the two symmetrical convex mold plates are arranged on the mold seat and are matched with the lead screw pair arranged on the mold seat, after the left and right automobile fender pieces are subjected to mold processing, the lead screw pair is controlled to drive the two mold plates to be separated, and the subsequent trimming process is continuously carried out on the convex mold plates, so that the operation of replacing a fender on the trimming mold is avoided, the field of a fender production line is reduced, the production efficiency of the fender is improved, and the utilization rate of the automobile fender mold is improved.

The invention relates to an automobile fender mould which comprises a base, a convex mould plate, a concave mould plate and a controller, wherein the convex mould plate is arranged on the base; the base is provided with a die holder, a convex die plate is arranged in the die holder, and a supporting plate is arranged above the die holder; a concave template is arranged at the bottom of the supporting plate; the die holder is of a box-shaped structure, and the die holder is internally provided with two symmetrical convex die plates which correspond to the processed fenders on the left side and the right side of the automobile; the bottom in the die holder is provided with slide rails, and a screw pair is arranged between the slide rails; the convex template is slidably arranged on the sliding rail, and the bottom of the convex template is provided with a screw block; the screw block is arranged on the screw rod pair and is driven by the rotation of the screw rod pair to enable the die holder to generate relative movement; a servo motor is arranged on one side of the screw pair extending out of the die holder, and the servo motor drives the two convex die plates to move on the slide rail through the screw pair; a guide sleeve is arranged on the base, and a guide rod is arranged in the guide sleeve; the supporting plate is arranged on the top of the guide rod, and the concave template on the supporting plate moves up and down through the guide rod, so that the concave template and the convex template are matched to forge and press the fender; the controller controls the operation of the servo motor; when the automobile fender trimming punching die works, a plate with a proper size is selected to be installed on a corresponding convex die plate in a die holder, forging equipment is started, a supporting plate drives the concave die plate to extrude downwards to be attached to the convex die plate, then the supporting plate is lifted, the drawn fender is taken out and sent to subsequent trimming and punching equipment, and because the automobile fender needs a plurality of processes to be matched with the die for processing, the waste of unnecessary processing time is increased by die changing operation between process switching, and the production efficiency and the utilization rate of the die are reduced; therefore, the two convex templates arranged on the die holder are matched with the lead screw pair arranged on the die holder, in the forging forming process, a whole plate is directly drawn on the two symmetrical convex templates to form a pair of fenders of an automobile, the left and right parts of the fenders are subjected to die stamping, the efficiency of forging the fenders is improved, the two convex templates on the die holder are separated by controlling the operation of the servo motor, the forged fenders are directly trimmed without changing dies, and the number of input dies and the occupation of a processing field of the fenders are saved; according to the invention, two symmetrical convex templates arranged on the die holder are utilized, and the screw pair arranged on the die holder is matched, so that after the left and right parts of the fender of an automobile are subjected to die processing, the screw pair is controlled to drive the two templates to be separated, and the subsequent trimming process is continuously carried out on the convex templates, thus the operation of replacing the fender on a trimming die is avoided, the field of a fender production line is reduced, the production efficiency of the fender is improved, and the utilization rate of the automobile fender die is improved.

Preferably, a support is arranged on the base; the die holder is arranged on the base through the support of the support; the top of the support is provided with a ball head, a die holder corresponding to the ball head is provided with a ball seat, and the ball head is in sliding contact with the ball seat; threads are arranged on the circumference of the lower part of the support, and the support and the base are meshed on the base through the threads; when the fender is in work, the interaction force between the plate and the die is changed from static to dynamic in the deformation process of the processed plate, the contact part of the plate and the die corner of the die is hardened in the change process, the plate at the hardened part can slide into the surface of the stamped plate to form an impact line, and in the subsequent processing, the impact line moves towards the center of the stress point of the stamped plate to form an impact line trace of the plate, so that the defect on the surface of the fender is caused; through the support that sets up, ball head on the cooperation support and the ball seat on the die holder, the feeding degree of depth of adjustment support on the base make the angle of die holder raised template change thereupon, and then reduced the wide-angle curved surface of processing the fender on the mould for the crest line of mould mouth is delayed with the contact time of panel, and the distance of sliding of raised template on the fender in the control punching press avoids producing the impact line vestige on the wide-angle curved surface, thereby has promoted the processingquality of car fender mould.

Preferably, the top of the guide rod is provided with an auxiliary ball head, and an auxiliary ball seat is arranged on a supporting plate corresponding to the auxiliary ball head; the bottom of the guide sleeve is provided with an air cavity, and a pressure regulating valve is arranged on the part of the air cavity, which leads to the outer side of the guide sleeve; when the plate punching machine works, the main source of impact line marks is that the concave template compresses a plate in the early stage of a forming stage, the plate is unbalanced during initial placement, the concave template and a convex point at the high position of the plate act firstly, the plate slides from one side easy to punch and deform to one side difficult to punch and deform due to the generated contact, and then scratches are formed on the punching surface of the plate; through setting up the vice bulb at the guide arm top, the vice ball seat on the cooperation layer board, through the relative height between the guide arm on the air-vent valve adjustment guide pin bushing, make the layer board plane produce the angle change that corresponds, and then make the die board contact panel with the angle of slope and compress tightly, through the angle of control die board slope, make the die board initial contact compress tightly at the holistic focus position of fender, the skew that produces when having weakened the die board processing panel, thereby the processingquality of fender mould has been ensured.

Preferably, the convex template is provided with a bulge, and the bulge is positioned at the transition position of the convex body of the convex template and the plane of the convex template; when the processing device works, the processed plate corners deform under the action of the circumferential compressive stress and the radial tensile stress of the convex template convex die, and when the radial tensile stress is small, the plastic deformation is insufficient, so that the quality defect of the processed fender is caused; through the bulge arranged on the convex die plate, the feeding resistance in the processing process of the plate is increased, the drawing process of the plate generates sufficient plastic deformation, meanwhile, the bulge absorbs redundant materials at the edge of the plate, the clarity of the appearance ridge of the plate is ensured, and the phenomena of hidden pits and ripples are avoided, so that the plate strength of the automobile fender die is improved.

Preferably, the supporting plate is provided with a cutting template which is in a strip shape, and the cutting template is filled in a gap between the two concave templates; limiting blocks are arranged at two ends of the cutting template, and limiting grooves are formed in the limiting blocks; the cutting template penetrates through the middle part of the supporting plate and moves up and down along the limiting groove; when the automobile fender cutting device works, the concave die plate on the supporting plate presses the convex die plate on the die holder, a plate is drawn to form a required fender, a pair of fenders of an automobile are simultaneously processed on the die holder in a die-combining mode, and when the pair of fenders are cut apart, the force required to be cut apart is the same as the acting force angle in the drawing process; through setting up template and the stopper of cutting on the layer board, cut the template and remove in the spacing inslot, directly cut off in the mould forging and pressing takes shape, the independent action of mould when avoiding the fender to cut off, effort direction and forging and pressing process phase-match when having ensured to cut off in the removal of spacing inslot, maintain automobile fender mould's processing effect.

Preferably, the top of the cutting template is provided with a spring, the spring is positioned at two ends of the cutting template, one end of the spring is fixed on the cutting template, and the other end of the spring is fixed at the top of the limiting groove; during working, the cutting template cuts and separates the integrally forged pair of fenders, the acting force of the cutting template needs to be gradually increased in the plate forging process, and the pair of fenders is stably cut; through setting up the spring at cutting the template top, will cut the template and be connected to the stopper on, make and cut the template at the in-process of mould forging and pressing panel, do not cause the effort the same with the forging and pressing to panel to reach the time delay of cutting the template and cut the effect of separating, thereby ensured automobile fender mould's processing effect.

The invention has the following beneficial effects:

1. according to the invention, the two symmetrical convex templates arranged on the die holder are matched with the lead screw pair arranged on the die holder, and the subsequent trimming process is continuously carried out on the convex templates, so that the operation of replacing the fender on the trimming die is avoided, and the production efficiency of the fender is improved; the arranged support is matched with the ball head and the ball seat, so that the angle of the convex template on the die holder is changed, the large-angle curved surface of the fender machined on the die is reduced, and the impact line trace on the large-angle curved surface is avoided; the auxiliary ball head arranged at the top of the guide rod is matched with the auxiliary ball seat on the supporting plate, so that the plane of the supporting plate generates corresponding angle change, the concave template is initially contacted and pressed at the gravity center position of the whole fender, and the offset generated when the concave template processes the board is weakened; the bulge arranged on the convex template absorbs the redundant materials at the edge of the plate, ensures the clearness of the edge line of the appearance of the plate, avoids the generation of a hidden pit and a ripple phenomenon, and improves the processing quality of the automobile fender die.

2. According to the invention, through the cutting template and the limiting block which are arranged on the supporting plate, the cutting template moves in the limiting groove, and is directly cut off in the forging and forming process of the die, so that the independent action of the die during the cutting off of the fender is avoided, and the action force direction is matched with the forging and pressing process during the cutting off by the movement in the limiting groove; the spring that sets up at cutting the template top will cut the template and be connected to the stopper on, make and cut the template at the in-process of mould forging and pressing panel, do not cause the effort the same with the forging and pressing to panel to reach the time delay of cutting the template and cut the effect of separating, thereby ensured automobile fender mould's processing effect.

Drawings

The invention is further described with reference to the following figures and embodiments.

FIG. 1 is a perspective view of an automotive fender mold of the present invention;

FIG. 2 is a perspective view of a top view of an automotive fender mold part of the invention;

FIG. 3 is a bottom perspective view of an automobile fender mold part of the invention;

FIG. 4 is an enlarged view of a portion of FIG. 1 at A;

in the figure: the automatic die-cutting machine comprises a base 1, a male die plate 2, a female die plate 3, a die holder 4, a supporting plate 5, a slide rail 41, a lead screw pair 411, a screw block 21, a servo motor 412, a guide sleeve 11, a guide rod 12, a support 13, a ball head 131, a ball seat 132, a thread 133, a secondary ball head 121, a secondary ball seat 122, a pressure regulating valve 111, a bulge 22, a die-cutting plate 51, a limiting block 52, a limiting groove 53 and a spring 511.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 4, the automobile fender panel mold according to the present invention includes a base 1, a male mold plate 2, a female mold plate 3, and a controller; the base 1 is provided with a die holder 4, a convex die plate 2 is arranged in the die holder 4, and a supporting plate 5 is arranged above the die holder 4; the bottom of the supporting plate 5 is provided with a concave template 3; the die holder 4 is of a box-shaped structure, and the die holders 4 are internally provided with two symmetrical convex die plates 2 which are used for correspondingly processing left and right side fenders of the automobile; a slide rail 41 is arranged at the bottom in the die holder 4, and a screw pair 411 is arranged between the slide rails 41; the convex template 2 is slidably arranged on the slide rail 41, and the bottom of the convex template 2 is provided with a screw block 21; the screw block 21 is arranged on the screw rod pair 411, and the screw block 21 is driven by the screw rod pair 411 to rotate so that the die holder 4 generates relative movement; a servo motor 412 is arranged on one side of the lead screw pair 411 extending out of the die holder 4, and the servo motor 412 drives the two convex die plates 2 to move on the slide rail 41 through the lead screw pair 411; a guide sleeve 11 is arranged on the base 1, and a guide rod 12 is arranged in the guide sleeve 11; the supporting plate 5 is arranged on the top of the guide rod 12, and the concave template 3 on the supporting plate 5 moves up and down through the guide rod 12, so that the concave template 3 and the convex template 2 are matched with each other to forge and press the fender; the controller controls the operation of the servo motor 412; when the automobile fender trimming and punching device works, a plate with a proper size is selected to be installed on the corresponding convex template 2 in the die holder 4, forging equipment is started, the supporting plate 5 drives the concave template 3 to extrude downwards to be attached to the convex template 2, then the supporting plate 5 is lifted, the drawn fender is taken out and sent to subsequent trimming and punching equipment, and because the automobile fender needs a plurality of processes to be matched with a die for processing, the waste of unnecessary processing time is increased by the die changing operation between the process switching, and the production efficiency and the utilization rate of the die are reduced; therefore, according to the invention, through the two convex templates 2 arranged on the die holder 4 and the lead screw pair 411 arranged on the die holder 4 in a matching manner, in the forging forming process, a whole plate is directly drawn on the two symmetrical convex templates 2 to form a pair of fenders of an automobile, so that the left and right parts of the fenders are subjected to die stamping, the efficiency of forging and pressing the fenders is improved, the two convex templates 2 on the die holder 4 are separated by controlling the operation of the servo motor 412, the forged and pressed fenders are directly trimmed without changing dies, and the number of the input dies and the occupation of the processing field of the fenders are saved; according to the invention, two symmetrical convex templates 2 arranged on the die holder 4 are utilized, the lead screw pair 411 arranged on the die holder 4 is matched, after the left and right parts of the automobile fender are subjected to die processing, the lead screw pair 411 is controlled to drive the two templates to be separated, and the subsequent trimming process is continuously carried out on the convex templates 2, so that the operation of replacing the fender on a trimming die is avoided, the field of a fender production line is reduced, the production efficiency of the fender is improved, and the utilization rate of the automobile fender die is improved.

As an embodiment of the present invention, a support 13 is disposed on the base 1; the die holder 4 is arranged on the base 1 through the support of the support 13; the top of the support 13 is provided with a ball head 131, a ball seat 132 is arranged on the die holder 4 corresponding to the ball head 131, and the ball head 131 is in sliding contact with the ball seat 132; the circumference of the lower part of the support 13 is provided with a thread 133, and the support 13 and the base 1 are engaged on the base 1 through the thread 133; when the fender is in work, the interaction force between the plate and the die is changed from static to dynamic in the deformation process of the processed plate, the contact part of the plate and the die corner of the die is hardened in the change process, the plate at the hardened part can slide into the surface of the stamped plate to form an impact line, and in the subsequent processing, the impact line moves towards the center of the stress point of the stamped plate to form an impact line trace of the plate, so that the defect on the surface of the fender is caused; through the support 13 that sets up, ball 131 on the cooperation support 13 and the ball seat 132 on the die holder 4, the feeding degree of depth of adjustment support 13 on base 1, the angle that makes die holder 4 boss 2 changes thereupon, and then the wide-angle curved surface of processing the fender on the mould has been reduced, make the crest line of mould mouth and the contact time of panel delayed, the sliding distance of boss 2 on the fender in the control punching press, avoid producing the impact line vestige on the wide-angle curved surface, thereby the processingquality of automobile fender mould has been promoted.

As an embodiment of the invention, a sub ball head 121 is arranged on the top of the guide rod 12, and a sub ball seat 122 is arranged on the supporting plate 5 corresponding to the sub ball head 121; the bottom of the guide sleeve 11 is provided with an air cavity, and a pressure regulating valve 111 is arranged on the part of the air cavity, which leads to the outer side of the guide sleeve 11; when the plate punching machine works, the main source of impact line marks is in the early stage of a forming stage, the concave template 3 compresses a plate, the plate is unbalanced during initial placement, the concave template 3 and a convex point at the high position of the plate act firstly, the plate slides from one side easy to punch and deform to one side difficult to punch and deform due to generated contact, and then scratches are formed on the punching surface of the plate; through setting up the vice bulb 121 at guide arm 12 top, the vice ball seat 122 on the cooperation layer board 5, adjust the relative height between the guide arm 12 on the guide pin bushing 11 through air-vent valve 111, make the 5 plane of layer board produce corresponding angle change, and then make the die board 3 contact panel with the angle of slope and compress tightly, through the angle of control die board 3 slope, make the die board 3 initial contact compress tightly at the holistic focus position of fender, the skew that produces when having weakened die board 3 processing panel, thereby the processingquality of fender mould has been ensured.

As an embodiment of the present invention, the convex template 2 is provided with a bump 22, and the bump 22 is located at the transition between the convex body of the convex template 2 and the plane of the convex template 2; when the processing device works, the processed plate corners deform under the action of circumferential compressive stress and radial tensile stress of the convex die plate 2, and when the radial tensile stress is small, the plastic deformation is insufficient, so that the quality defect of the processed fender is caused; through the bulge 22 arranged on the convex die plate 2, the feeding resistance in the processing process of the plate is increased, the drawing process of the plate generates sufficient plastic deformation, meanwhile, the bulge 22 absorbs redundant materials at the corners of the plate, the clear appearance ridge of the plate is ensured, the phenomena of blind holes and ripples are avoided, and the strength of the plate processed by the automobile fender die is improved.

In an embodiment of the present invention, the supporting plate 5 is provided with a cutting template 51, the cutting template 51 is in a long strip shape, and the cutting template 51 is filled in a gap between the two concave templates 3; two ends of the cutting template 51 are provided with limiting blocks 52, and limiting grooves 53 are formed in the limiting blocks 52; the cutting template 51 penetrates through the middle part of the supporting plate 5 and moves up and down along the limiting groove 53; when the automobile fender cutting device works, the female die plate 3 on the supporting plate 5 presses against the male die plate 2 on the die holder 4, a plate is drawn to form a required fender, a pair of fenders of an automobile are simultaneously machined on the die holder 4 in a combined die mode, and when the pair of fenders are cut and separated, the angle of a force required to be cut and separated is the same as that of an acting force in the drawing process; through setting up template 51 and the stopper 52 of cutting on layer board 5, cut template 51 and remove in spacing groove 53, directly cut off in the mould forging and pressing takes shape, the independent action of mould when avoiding the fender to cut off, effort direction and forging and pressing process phase-match when having ensured to cut off in the removal of spacing groove 53, maintain automobile fender mould's processing effect.

As an embodiment of the present invention, a spring 511 is disposed on the top of the cutting template 51, the spring 511 is located at two ends of the cutting template 51, one end of the spring 511 is fixed on the cutting template 51, and the other end is fixed on the top of the limiting groove 53; during working, the cutting template 51 cuts and separates the integrally forged pair of fenders, the acting force of the cutting template 51 needs to be gradually increased in the plate forging process, and the pair of fenders is cut stably; the cutting template 51 is connected to the limiting block 52 through the spring 511 arranged at the top of the cutting template 51, so that the same acting force as forging and pressing is not applied to the plate in the process of forging and pressing the plate by the cutting template 51, the delayed cutting-off effect of the cutting template 51 is achieved, and the processing effect of the automobile fender mould is ensured.

When the device works, a plate with a proper size is selected to be installed on the corresponding convex die plate 2 in the die holder 4, forging equipment is started, the supporting plate 5 drives the concave die plate 3 to extrude downwards to be attached to the convex die plate 2, then the supporting plate 5 is lifted, and the drawn fender is taken out and sent to subsequent trimming and punching equipment; through the two convex die plates 2 arranged on the die holder 4 and the lead screw pair 411 arranged on the die holder 4 in a matching manner, in the forging forming process, a whole plate is directly drawn on the two symmetrical convex die plates 2 to form a pair of fenders of an automobile, so that the left and right parts of the fenders are subjected to die stamping, the efficiency of forging and pressing the fenders is improved, the two convex die plates 2 on the die holder 4 are separated by controlling the operation of the servo motor 412, and the forged fenders are directly trimmed without changing dies; the arranged support 13 is matched with a ball head 131 on the support 13 and a ball seat 132 on the die holder 4, the feeding depth of the support 13 on the base 1 is adjusted, so that the angle of the convex die plate 2 on the die holder 4 is changed, the large-angle curved surface of the fender machined on the die is further reduced, the contact time between the ridge line of the die opening and the plate is delayed, the sliding distance of the convex die plate 2 on the fender in stamping is controlled, and the generation of impact line marks on the large-angle curved surface is avoided; the auxiliary ball head 121 arranged at the top of the guide rod 12 is matched with an auxiliary ball seat 122 on the supporting plate 5, the relative height between the guide rods 12 on the guide sleeve 11 is adjusted through the pressure regulating valve 111, so that the plane of the supporting plate 5 generates corresponding angle change, the concave template 3 is further contacted with a plate at an inclined angle to be pressed, the concave template 3 is initially contacted and pressed at the gravity center position of the whole fender through controlling the inclined angle of the concave template 3, and the offset generated when the concave template 3 processes the plate is weakened; the bulges 22 arranged on the convex die plate 2 increase the feeding resistance in the plate processing process, so that the plate is fully plastically deformed in the drawing process, and meanwhile, the bulges 22 absorb redundant materials at the corners of the plate, so that the clear appearance ridge of the plate is ensured, and the phenomena of hidden pits and ripples are avoided; the cutting template 51 and the limiting block 52 are arranged on the supporting plate 5, the cutting template 51 moves in the limiting groove 53, and is directly cut off in the forging and forming process of the die, so that the independent action of the die during the cutting off of the fender is avoided, and the action force direction is matched with the forging and pressing process during the cutting off by the movement in the limiting groove 53; the spring 511 arranged on the top of the cutting template 51 connects the cutting template 51 to the stopper 52, so that the cutting template 51 does not cause the same force as forging when the die forges the plate, thereby achieving the delayed cutting-off effect of the cutting template 51.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.