CN111774480A - Multi-curvature automobile bent plate stamping processing die and method - Google Patents
Multi-curvature automobile bent plate stamping processing die and method Download PDFInfo
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- CN111774480A CN111774480A CN202010270036.7A CN202010270036A CN111774480A CN 111774480 A CN111774480 A CN 111774480A CN 202010270036 A CN202010270036 A CN 202010270036A CN 111774480 A CN111774480 A CN 111774480A
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000003825 pressing Methods 0.000 claims abstract description 36
- 238000004080 punching Methods 0.000 claims abstract description 27
- 239000002994 raw material Substances 0.000 claims abstract description 17
- 238000005452 bending Methods 0.000 claims description 11
- 238000003672 processing method Methods 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
- B21D5/0209—Tools therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
- B21D37/12—Particular guiding equipment, e.g. pliers; Special arrangements for interconnection or cooperation of dies
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Abstract
The multi-curvature automobile bent plate stamping processing die and the method comprise that a primary punch is used for stamping a raw material plate into a primary bent plate, two side edges of the bottom surface of the primary punch are both provided with first R-angle pressing surfaces, the angle of each first R-angle pressing surface is smaller than 90 degrees, and each first R-angle pressing surface is used for compensating the R-angle resilience of the primary bent plate; the second R angle pressing surface has the same structure as the first R angle pressing surface; the side surface of the secondary punch opposite to the lower inclined surface guide seat is an upper punching inclined surface which is parallel to the lower inclined surface guide seat, and the upper punching inclined surface and the lower inclined surface guide seat are used for processing an obtuse inclined surface folded plate of the secondary bent plate in a matched manner; the invention can effectively reduce the deformation of the plate during single stamping, so that the stamping process is more stable, and the strength of the plate is ensured; the folded plate can be made to rebound to a standard angle when rebounding, so that a standard bent plate with the required size can be processed.
Description
Technical Field
The invention belongs to the technical field of stamping dies, and particularly relates to a multi-curvature automobile bent plate stamping processing die and a method.
Background
The automobile bent plate is a workpiece which is difficult to manufacture, 4 bent parts are arranged on the bent plate, one bent part is of an obtuse-angle inclined plane structure, and the other bent parts are of a right-angle structure; on the other hand once punches each folded plate to required angle, each position of buckling of bent plate can take place the deformation of kick-backing under the effect of internal stress, the angle grow at each position of buckling to make the formed part can't reach qualified size.
Disclosure of Invention
The invention provides a multi-curvature automobile bent plate stamping processing die and a method aiming at the defects in the prior art, and the specific technical scheme is as follows:
the stamping processing die for the multi-curvature automobile bent plate comprises a lower template, wherein a first forming seat and a second forming seat are symmetrically arranged on the surface of the lower template; the surface of the first forming seat is vertically and symmetrically provided with two first right-angle guide seats, a primary punch is inserted between the two first right-angle guide seats in a matching manner, the primary punch is used for punching a raw material plate into a primary bent plate, two side edges of the bottom surface of the primary punch are first R-angle pressing surfaces, the angle of each first R-angle pressing surface is smaller than 90 degrees, and each first R-angle pressing surface is used for compensating the R-angle resilience of the primary bent plate;
a second right-angle guide seat and a lower inclined surface guide seat are vertically and symmetrically arranged on the surface of the second forming seat, a secondary punch is inserted between the second right-angle guide seat and the lower inclined surface guide seat in a matching manner, the secondary punch is used for punching the primary bent plate into a secondary bent plate, a second R-angle pressing surface is arranged on one side edge of the bottom surface of the secondary punch, and the second R-angle pressing surface has the same structure as the first R-angle pressing surface; the side that the secondary drift with lower bevel guide holder is relative is the upper punching inclined plane, the upper punching inclined plane with lower bevel guide holder is parallel, upper punching inclined plane, lower bevel guide holder are used for the cooperation processing the obtuse angle inclined plane folded plate of secondary bent plate, the angle of lower bevel guide holder is less than the angle of obtuse angle inclined plane folded plate, the angle of lower bevel guide holder is greater than 90, lower bevel guide holder is used for compensating the resilience force of obtuse angle inclined plane folded plate.
Furthermore, the primary punch comprises a main punch block and an upper inclined plane guide seat, the main punch block is of a cubic structure, one side edge, far away from the main punch block, of the main punch block is a first R-angle pressing surface, the upper inclined plane guide seat is inserted into the other side face of the main punch block, the upper inclined plane guide seat and the main punch block are fixed through screws, and the outer wall of the upper inclined plane guide seat is an upper punching inclined plane.
Furthermore, the lower inclined surface guide seat comprises a supporting main body and an inclined surface seat, the supporting main body is fixed on the second forming seat, the inclined surface seat is inserted into the inner wall of the supporting main body, and the inclined surface seat and the supporting main body are fixed through screws.
The multi-curvature automobile bent plate stamping processing method comprises the following steps:
s1, cutting a flat raw material plate by laser;
s2, primary bending plate processing:
placing the raw material plates on a first right-angle guide seat in parallel;
a primary punch moves downwards to enter between the two first straight angle guide seats, the primary punch punches the raw material plate into a primary bent plate, a first R-angle pressing surface punches a small R angle on the primary bent plate, and the angle of the R angle of the primary bent plate is A;
s2, secondary plate bending:
the primary bent plate is arranged on a lower inclined plane guide seat and a second supporting guide seat in an inverted mode, and a folded plate of the first bent plate is positioned on the outer sides of the lower inclined plane guide seat and the second supporting guide seat;
the secondary punch downwards punches the plane part of the primary bent plate so as to punch the primary bent plate into a secondary bent plate, and a second R-angle pressing surface punches a small R angle on the secondary bent plate, wherein the angle of the R angle of the secondary bent plate is B; the upper bevel guide seat and the lower bevel guide seat are jointly punched to form an obtuse bevel folded plate with a smaller angle, and the angle of the obtuse bevel folded plate is C;
s3, standing and rebounding:
after standing for a period of time, the angle A of the first bent plate R and the angle B of the second bent plate R rebound and are converted into an angle D, the angle C of the obtuse-angle inclined plane folded plate of the second bent plate rebounds and is converted into an angle E, and the angles D and E are qualified angles of the finally formed bent plate.
Further, the angle a and the angle B are both 85 °, and the angle D is 90 °.
Further, the angle C is 90 °, and the angle E is 100 °.
The invention has the beneficial effects that:
1. stamping a first folded plate and a second folded plate which are short at one time, inverting the first bent plate, and stamping a third folded plate and an obtuse-angle inclined plane folded plate at the second time; therefore, the deformation of the plate during single stamping is effectively reduced, the stamping process is more stable, and the strength of the plate is ensured;
2. the R angle compensation can be carried out on the right-angle folded plate through the smaller R angle pressing surface, and a rebound gap is reserved, so that the R angle part can rebound to a standard angle when rebounding; the obtuse-angle inclined plane folded plate with a small angle can be processed by the lower inclined plane guide seat and the upper punching inclined plane, so that the obtuse-angle inclined plane folded plate can be rebounded to a standard angle when rebounded, and a standard bent plate with a required size can be processed.
Drawings
FIG. 1 is a schematic view of a one-step stamping structure of an automobile bent plate according to the present invention;
FIG. 2 is a schematic diagram of a secondary stamping structure of the automobile bent plate of the invention;
FIG. 3 shows a schematic view of the secondary punch of the present invention;
FIG. 4 shows a schematic view of the construction of the lower ramp guide shoe of the present invention;
shown in the figure: 1. a lower template; 2. a first forming seat; 21. a first right-angle guide seat; 3. a second forming base; 31. a lower inclined plane guide seat; 311. a support body; 3111. a first slot; 312. a bevel seat; 3121. a first insert block; 32. a second right-angle guide seat; 4. a raw material plate; 5. primary bending plate; 51. a first vertical flap; 52. a second vertical flap; 6. a primary punch; 61. a first R-angle pressure surface; 7. a secondary punch; 71. a main punching block; 711. a second R corner pressing surface; 72. an upper inclined plane guide seat; 721. punching an inclined plane; 8. secondary plate bending; 81. a third vertical flap; 82. obtuse angle inclined plane folded plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1 and 2, the multi-curvature automobile bent plate stamping processing die comprises a lower template 1, wherein a first forming seat 2 and a second forming seat 3 are symmetrically arranged on the surface of the lower template 1; the surface of the first forming seat 2 is vertically and symmetrically provided with two first right-angle guide seats 21, a primary punch 6 is inserted between the two first right-angle guide seats 21 in a matching manner, the primary punch 6 is used for punching a raw material plate 4 into a primary bent plate 5, two side edges of the bottom surface of the primary punch 6 are both provided with first R-angle pressing surfaces 61, the angle of each first R-angle pressing surface 61 is smaller than 90 degrees, and each first R-angle pressing surface 61 is used for compensating the R-angle resilience of the primary bent plate 5;
a second right-angle guide seat 32 and a lower inclined guide seat 31 are vertically and symmetrically arranged on the surface of the second forming seat 3, a secondary punch 7 is inserted between the second right-angle guide seat 32 and the lower inclined guide seat 31 in a matching manner, the secondary punch 7 is used for punching the primary bent plate 5 into a secondary bent plate 8, a second R-angle pressing surface 712 is arranged on one side edge of the bottom surface of the secondary punch 7, and the second R-angle pressing surface 712 has the same structure as the first R-angle pressing surface 61; the side of the secondary punch 7 opposite to the lower bevel guide seat 31 is an upper punching bevel 722, the upper punching bevel 722 is parallel to the lower bevel guide seat 31, the upper punching bevel 722 and the lower bevel guide seat 31 are used for processing the obtuse bevel folded plate 82 of the secondary bent plate 8 in a matching way, the angle of the lower bevel guide seat 31 is smaller than that of the obtuse bevel folded plate 82, the angle of the lower bevel guide seat 31 is larger than 90 degrees, and the lower bevel guide seat 31 is used for compensating the resilience force of the obtuse bevel folded plate 82; the bent plate with regular shape and high strength can be stably punched in a secondary punching mode, in order to ensure the normal movement of the punch, R angle compensation can be carried out on the right-angle folded plate through a smaller R angle pressing surface, and a rebound gap is reserved, so that the R angle part can be just rebounded to a standard angle when rebounded; the obtuse-angle slant folded plate 82 with a small angle can be processed by the lower slant guide seat 31 and the upper stamping slant 722, so that the obtuse-angle slant folded plate 82 can be just rebounded to a standard angle when rebounded.
As shown in fig. 3, the secondary punch 7 includes a main punch 71 and an upper inclined guide seat 72, the main punch 71 is of a cubic structure, one side of the main punch 71 away from the lower inclined guide seat 31 is a second R-shaped pressing surface 712, the other side of the main punch 71 is inserted into the upper inclined guide seat 72, the upper inclined guide seat 72 and the main punch 71 are fixed by screws, and an outer wall of the upper inclined guide seat 72 is an upper punching inclined surface 722; the upper inclined plane guide seat 72 is detachably connected with the main punching block 71, so that the upper punching inclined plane 722 can be freely changed according to the angle requirement of a bent plate, the application range of the die is enlarged, and only the upper inclined plane guide seat 72 needs to be detached and replaced, and the secondary punch 7 does not need to be integrally detached; the upper inclined plane guide seat 72 is matched with the main punching block 71 in a concave-convex groove insertion mode, and the insertion groove is a counter bore.
As shown in fig. 4, the lower inclined guide seat 31 includes a support main body 311 and an inclined seat 312, the support main body 311 is fixed on the second forming seat 3, the inclined seat 312 is inserted into an inner wall of the support main body 311, and the inclined seat 312 and the support main body 311 are fixed by screws; the detachable inclined plane seat 312 can be matched with the detachable upper inclined plane guide seat 72, so that the application range of the die is improved, and meanwhile, only the inclined plane seat 312 needs to be replaced during replacement, and the inclined plane seat 312 does not need to be integrally detached; the supporting body 311 and the inclined seat 312 are inserted in a concave-convex slot, and the slot is a counter bore.
The multi-curvature automobile bent plate stamping processing method comprises the following steps:
s1, cutting a flat raw material plate 4 by laser; a processing person cuts a raw material plate 4 with a required shape on the plate according to the outline of the bent plate;
as shown in fig. 1; s2, primary bending plate 5 processing:
placing the raw material plate 4 on a first right-angle guide seat 21 in parallel; when the raw material plate 4 is placed, attention needs to be paid to the length of the first right-angle guide seat 21 extending outwards from the two ends, and the extending length is the length of the punched folded plate, so that the extending length of one end needs to be the same as that of the first folded plate 51, and the extending length of the other end needs to be the same as that of the second folded plate 52;
a primary punch 6 moves downwards to enter between the two first straight angle guide seats 21, the primary punch 6 punches the raw material plate 4 into a primary bent plate 5, and a first R-angle pressing surface 61 punches a small R angle on the primary bent plate 5, wherein the angle of the R angle of the primary bent plate is A; this step is to process the first folded plate 51 and the second folded plate 52 at a time; during processing, the upper die plate drives the primary punch 6 to move downwards, so that the plane part is bent downwards and embedded between the first right-angle guide seat 21 and the second right-angle guide seat 22, and the bottom surface of the upper die plate is provided with a constraint positioning structure for the plate, so that the plate is prevented from tilting upwards; after the punching forming is finished, the raw material plate 4 is changed into a U-shaped primary bent plate 5, and a first folded plate 51 and a second folded plate 52 which are bent upwards are arranged on two sides of the primary bent plate 5; the angle of the first R-angle pressing surface 61 is 85 degrees, and the angle A of the first bent plate R is also 85 degrees;
s2, secondary bending plate 8 processing:
the primary bent plate 5 is placed upside down on the lower inclined plane guide seat 31 and the second right-angle guide seat 32, and the folded plate of the primary bent plate 5 is positioned on the outer sides of the lower inclined plane guide seat 31 and the second right-angle guide seat 32; the planar part can be upwards arranged in an inverted mode, so that the first folded plate 51 and the second folded plate 52 are prevented from blocking the movement of the punch, and meanwhile, the planar part can be convenient for the upper die plate to be pressed and fixed, so that the pressing forming process of the one-time bent plate 5 is more stable, and the forming effect is better;
the secondary punch 7 punches the plane part of the primary bent plate 5 downwards so as to punch the primary bent plate 5 into a secondary bent plate 8, and the second R-angle pressing surface 712 punches a smaller R-angle on the secondary bent plate 8, wherein the R-angle of the secondary bent plate is B; the upper punched inclined plane 722 and the lower inclined plane guide seat 31 are jointly punched to form an obtuse inclined plane folded plate 82 with a smaller angle, and the angle of the obtuse inclined plane folded plate 82 is C; when the secondary punch 7 moves downwards, the plane part of the primary bent plate 5 is punched and embedded between the lower inclined plane guide seat 31 and the second right-angle guide seat 32, so that a third folded plate 81 and an obtuse inclined plane folded plate 82 are punched, the inclined planes of the upper punched inclined plane 722 and the lower inclined plane guide seat 31 are both 95 degrees, and the inclined plane of the obtuse inclined plane folded plate 82 is also 95 degrees;
s3, standing and rebounding:
after standing for a period of time, the angle A of the first bent plate R and the angle B of the second bent plate R are both rebounded and converted into an angle D, the angle C of the obtuse-angle inclined plane folded plate of the second bent plate rebounds and is converted into an angle E, and the angle D and the angle E are qualified angles of the finally formed bent plate; through the step, the secondary bent plate can rebound and reset, so that the secondary bent plate rebounds to the standard bent plate, the bending R angles of the first folded plate 51, the second folded plate 52 and the third folded plate 81 are all 90 degrees, and the included angle of the obtuse-angle inclined plane folded plate 82 is 100 degrees.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. Many curvatures car bent plate stamping die, its characterized in that: the die comprises a lower template (1), wherein a first forming seat (2) and a second forming seat (3) are symmetrically arranged on the surface of the lower template (1); the surface of the first forming seat (2) is vertically and symmetrically provided with two first right-angle guide seats (21), a primary punch (6) is inserted between the two first right-angle guide seats (21) in a matching mode, the primary punch (6) is used for punching a raw material plate (4) into a primary bent plate (5), two side edges of the bottom surface of the primary punch (6) are both provided with first R-angle pressing surfaces (61), the angle of each first R-angle pressing surface (61) is smaller than 90 degrees, and each first R-angle pressing surface (61) is used for compensating the R-angle resilience of the primary bent plate (5);
a second right-angle guide seat (32) and a lower inclined surface guide seat (31) are vertically and symmetrically arranged on the surface of the second forming seat (3), a secondary punch (7) is inserted between the second right-angle guide seat (32) and the lower inclined surface guide seat (31) in a matching manner, the secondary punch (7) is used for punching the primary bent plate (5) into a secondary bent plate (8), a second R-angle pressing surface (712) is arranged on one side edge of the bottom surface of the secondary punch (7), and the second R-angle pressing surface (712) has the same structure as the first R-angle pressing surface (61); the secondary punch (7) and the side that lower inclined plane guide holder (31) is relative is for punching inclined plane (722), go up punching inclined plane (722) with inclined plane guide holder (31) are parallel down, go up punching inclined plane (722), lower inclined plane guide holder (31) are used for the cooperation processing obtuse angle inclined plane folded plate (82) of secondary bent plate (8), the angle of lower inclined plane guide holder (31) is less than the angle of obtuse angle inclined plane folded plate (82), the angle of lower inclined plane guide holder (31) is greater than 90, lower inclined plane guide holder (31) are used for compensating the resilience force of obtuse angle inclined plane folded plate (82).
2. The multi-curvature automobile bent plate stamping processing die according to claim 1, characterized in that: secondary drift (7) are including main kicking block (71) and last inclined plane guide holder (72), main kicking block (71) are the cube structure, main kicking block (71) are kept away from a side of inclined plane guide holder (31) is second R angle pressure face (712) down, another side of main kicking block (71) is pegged graft and is had go up inclined plane guide holder (72), go up inclined plane guide holder (72) with pass through the fix with screw between main kicking block (71), the outer wall of going up inclined plane guide holder (72) is for going up system inclined plane (722).
3. The multi-curvature automobile bent plate stamping processing die according to claim 2, characterized in that: the lower inclined plane guide seat (31) comprises a support main body (311) and an inclined plane seat (312), the support main body (311) is fixed on the second forming seat (3), the inclined plane seat (312) is inserted into the inner wall of the support main body (311), and the inclined plane seat (312) and the support main body (311) are fixed through screws.
4. The stamping processing method of the multi-curvature automobile bent plate is characterized by comprising the following steps of: the multi-curvature automobile bent plate stamping processing die of claim 1 is applied, and the processing method comprises the following steps:
s1, cutting a flat raw material plate (4) by laser;
s2, primary bending plate (5) processing:
placing the raw material plate (4) on a first right-angle guide seat (21) in parallel;
a primary punch (6) moves downwards to enter between the two first straight angle guide seats (21), the primary punch (6) punches the raw material plate (4) into a primary bent plate (5), a first R angle pressing surface (61) punches a small R angle on the primary bent plate (5), and the angle of the R angle of the primary bent plate is A;
s2, secondary bending plate (8) processing:
the primary bending plate (5) is placed on the lower inclined plane guide seat (31) and the second right-angle guide seat (32) in an inverted mode, and the folded plate of the primary bending plate (5) is located on the outer sides of the lower inclined plane guide seat (31) and the second right-angle guide seat (32);
a secondary punch (7) downwards punches the plane part of the primary bent plate (5) so as to punch the primary bent plate (5) into a secondary bent plate (8), and a second R-angle pressing surface (712) punches a small R angle on the secondary bent plate (8), wherein the angle of the R angle of the secondary bent plate is B; an obtuse-angle inclined plane folded plate (82) with a smaller angle is punched by the upper inclined plane guide seat (72) and the lower inclined plane guide seat (31) together, and the angle of the obtuse-angle inclined plane folded plate (82) is C;
s3, standing and rebounding:
after standing for a period of time, the angle A of the first bent plate R and the angle B of the second bent plate R rebound and are converted into an angle D, the angle C of the obtuse-angle inclined plane folded plate of the second bent plate rebounds and is converted into an angle E, and the angles D and E are qualified angles of the finally formed bent plate.
5. The multi-curvature automobile bent plate stamping method according to claim 4, wherein: the angle A and the angle B are both 85 degrees, and the angle D is 90 degrees.
6. The multi-curvature automobile bent plate stamping method according to claim 4, wherein: the angle C is 90 °, and the angle E is 100 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010270036.7A CN111774480A (en) | 2020-04-08 | 2020-04-08 | Multi-curvature automobile bent plate stamping processing die and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010270036.7A CN111774480A (en) | 2020-04-08 | 2020-04-08 | Multi-curvature automobile bent plate stamping processing die and method |
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| CN105458081A (en) * | 2016-01-15 | 2016-04-06 | 中国核动力研究设计院 | Stamping forming tool for semi-groove shells shaped like Chinese character 'ji' of irradiation inspection tubes |
| JP2018149589A (en) * | 2017-03-15 | 2018-09-27 | Ｊｆｅスチール株式会社 | Press molding method |
| CN208050731U (en) * | 2018-02-10 | 2018-11-06 | 无锡微研中佳精机科技有限公司 | A kind of bending mechanism of adjustable angle of revolution |
| CN108704980A (en) * | 2018-05-07 | 2018-10-26 | 福州汇龙机械模具有限责任公司 | A kind of negative angle quick molding method |
| CN108906992A (en) * | 2018-06-29 | 2018-11-30 | 上海菲格瑞特汽车科技股份有限公司 | A kind of zigzag shape beam piece forming technology and its two times punch mold |
| CN209531864U (en) * | 2018-11-21 | 2019-10-25 | 珠海格力精密模具有限公司 | Sheet metal part resilience compensation pendulum block assembly and die and punching machine with same |
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