CN111054829B - Die surface refining method of stamping die - Google Patents
Die surface refining method of stamping die Download PDFInfo
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- CN111054829B CN111054829B CN201911093631.1A CN201911093631A CN111054829B CN 111054829 B CN111054829 B CN 111054829B CN 201911093631 A CN201911093631 A CN 201911093631A CN 111054829 B CN111054829 B CN 111054829B
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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
- B21D37/20—Making tools by operations not covered by a single other subclass
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Abstract
The invention discloses a die surface refining method of a stamping die, and belongs to the technical field of die surface refining. A method for thinning a die surface of a stamping die adopts the following steps: s1, determining the optimized area of the die surface of the die according to the structural elements of the die; s2, carrying out finite element simulation on the die by adopting a finite element analysis method to obtain the contact force between the die surface of the die and the blank in the stamping process, and estimating deformation of different areas of the die surface by a simulation formula; s3, verifying the simulation accuracy according to the actual deformation of the die deformation area in the stamping test site; and S4, recording the stamping experimental data, correcting the parameters in the simulation formula, and repeating the step S2 and the step S3 to obtain the most approximate result. The invention realizes the optimization of the die surface of the die, can effectively improve the structural rigidity of the die, simultaneously reduces the workload of bench workers for trimming the die surface, greatly reduces the labor intensity of operators and improves the working efficiency.
Description
Technical Field
The invention relates to the technical field of die face thinning, in particular to a die face thinning method of a stamping die.
Background
The mould is used for making the tool of the shaping article, this kind of tool is formed by various parts, different moulds are formed by different parts, it mainly realizes the processing of the appearance of article through the change of the shaping material physical state, it is simple to have the title of "industrial mother", the structural rigidity of the mould is lower in the prior art, the result of use is unstable, produce the elastic deformation easily, therefore, often need the bench worker to repair the die surface of the mould, labour intensity is big, and reduced the work efficiency.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a method for thinning the die surface of a stamping die.
In order to achieve the purpose, the invention adopts the following technical scheme:
the method for thinning the die surface of the stamping die is characterized by comprising the following steps of:
s1, determining an optimized area of the die surface of the die according to the structural elements of the die;
s2, carrying out finite element simulation on the die by adopting a finite element analysis method to obtain the contact force between the die surface of the die and the blank in the stamping process, and estimating the deformation quantity of different areas of the die surface by a simulation formula;
s3, verifying the simulation accuracy according to the actual deformation of the die deformation area in the stamping test site;
s4, recording stamping experimental data, correcting parameters in the simulation formula, and repeatedly operating the steps S2 and S3 to obtain the most approximate result;
the die surface thinning method of the stamping die is implemented by adopting a simulation device of the die surface thinning method of the stamping die, the simulation device of the die surface thinning method of the stamping die comprises a bottom plate, and the outer wall of the top of the bottom plate is connected with a die body; the bottom plate is also connected with a pressing mechanism for fixing the die body; the top of the bottom plate is connected with a top plate through a support rod, the top of the top plate is provided with a through hole, a stamping rod is connected in the through hole in a sliding manner, and the bottom of the stamping rod is connected with a stamping head matched with the die body; the top of the stamping rod is integrally connected with a threaded rod, and the outer wall of the threaded rod is connected with a balancing weight in a sliding manner; the utility model discloses a stamping die, including roof, punching bar, fixture block, draw-in groove, fixture block, fixing nut, fixing plate, buckle, fixing plate, the bottom of roof is connected with the fixed plate, be equipped with logical groove and draw-in groove on the fixed plate respectively, the outer wall of punching bar still is connected with the fixture block, fixture block sliding connection is at logical inslot, the fixture block cooperatees with the draw-in groove, the outer wall threaded connection of threaded rod has fixation nut, fixation nut offsets with the outer wall of balancing weight, the top of threaded rod still is connected with the pull ring, the bottom of fixed plate is connected with the circular arc board, be equipped with the spout on the circular arc board, fixture block sliding connection is in the spout, the outer wall of circular arc board still is equipped with the scale mark, the outer wall of roof still is equipped with the standing groove with balancing weight matched with, punches to the die body through the punching head to the actual deformation effect of observation die body.
Preferably, the pressing mechanism comprises a screw rod and a pressing block, the pressing block is connected to the outer wall of the screw rod in a sliding mode, a rubber pad is further arranged at the bottom of the pressing block, and the rubber pad abuts against the outer wall of the die body.
Preferably, an elongated slot is formed in the bottom plate, the screw rod is slidably connected in the elongated slot, a limiting plate is further connected to the bottom of the screw rod, a locking knob is further in threaded connection with the outer wall of the screw rod, and the locking knob abuts against the outer wall of the top of the pressing block.
Preferably, the outer wall of the screw rod is further sleeved with a spring piece, and the spring piece is abutted to the outer wall of the bottom of the pressing block and the outer wall of the top of the bottom plate respectively.
Preferably, the bottom of the bottom plate is connected with a supporting seat.
Compared with the prior art, the invention provides a die face thinning method of a stamping die, which has the following beneficial effects:
the method for refining the die surface of the stamping die comprises the steps of firstly determining the position of a die body to be inspected according to the structural elements of the die body, then placing the die body on a bottom plate on a simulation device, fixing the die body through a pressing mechanism, enabling the die surface to be simulated to correspond to the positions of a stamping rod and a stamping head, enabling a screw rod to slide in a long groove, enabling the die body to be fixed at different positions, specifically, enabling a pressing block to be abutted against the die body, enabling a rubber pad at the bottom of the pressing block to prevent the pressing block from crushing the die body, screwing a locking knob to enable the locking knob to press the pressing block, enabling a limiting plate to be abutted against the outer wall at the bottom of the bottom plate, enabling the pressing block to press the die body, enabling the pressing block to be prevented from inclining to a large extent through the spring piece, enhancing the pressing effect, then pulling a pull ring to enable a clamping block on the stamping rod to be arranged in a through groove, then loosening the pull ring, the punching rod can drive the punching head to punch the die body, so that the actual deformation effect of the die body can be observed, the arc plate and the chute can enable the punching rod to fall more stably, the arc plate, the punching rod and the clamping block are in smooth contact, the test result cannot be influenced, the generated friction is negligible, the scale mark can conveniently observe the falling height of the punching rod, the clamping block cannot touch the bottom of the chute, so that the punching result is prevented from being influenced, then the simulation result is compared with a finite element analysis method, the deformation quantity of a die surface is calculated through a simulation formula, the weight of the punching rod can be increased by adding a balancing weight on a threaded rod, the balancing weight is fixed through a fixing nut, the deformation quantity of the die body is repeatedly tested, the parameters of the simulation formula are corrected through multiple tests, the final result is summarized, and the structural rigidity of the die is enhanced, the elastic deformation of the rigidity of the die is reduced, and the workload of the bench worker for trimming the die surface of the die is reduced.
The parts which are not involved in the device are the same as or can be realized by adopting the prior art, the optimization of the die surface of the die is realized through finite element simulation, the structural rigidity of the die can be effectively improved, and the elastic deformation of the rigidity of the die is reduced, so that the quality of a stamping part is more stable, the workload of trimming the die surface by a bench worker is reduced, the labor intensity of operators is greatly reduced, and the working efficiency is improved.
Drawings
Fig. 1 is a schematic structural diagram of a simulation apparatus of a method for thinning a die surface of a stamping die according to the present invention;
fig. 2 is a schematic structural diagram of the bottom of a simulation apparatus of a method for thinning a die surface of a stamping die according to the present invention;
fig. 3 is a first schematic structural diagram of an arc plate of a simulation device of the method for thinning the die surface of the stamping die provided by the invention;
fig. 4 is a second schematic structural diagram of an arc plate of a simulation device of the die surface thinning method for the stamping die provided by the invention;
FIG. 5 is a schematic structural diagram of a pressing mechanism of a simulation apparatus of a method for thinning a die surface of a stamping die according to the present invention;
FIG. 6 is a schematic structural diagram of a stamping rod of a simulation apparatus for a method of thinning a die surface of a stamping die according to the present invention;
fig. 7 is a schematic structural diagram of a portion a in fig. 1 of a method for thinning a die surface of a stamping die according to the present invention.
In the figure: 1. a base plate; 101. a supporting seat; 102. a support bar; 103. a long groove; 2. a mold body; 3. a top plate; 301. a through hole; 302. a placement groove; 303. a fixing plate; 304. a through groove; 305. a card slot; 4. a screw rod; 401. briquetting; 402. a limiting plate; 403. locking the knob; 404. a spring plate; 405. a rubber pad; 5. punching the press rod; 501. stamping a head; 502. a threaded rod; 503. fixing a nut; 504. a pull ring; 505. a clamping block; 506. a balancing weight; 6. a circular arc plate; 601. a chute; 602. scale marks.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-7, a method for thinning a die surface of a stamping die, which comprises the following steps:
s1, determining the optimized area of the die surface of the die according to the structural elements of the die;
s2, carrying out finite element simulation on the die by adopting a finite element analysis method to obtain the contact force between the die surface of the die and the blank in the stamping process, and estimating deformation of different areas of the die surface by a simulation formula;
s3, verifying the simulation accuracy according to the actual deformation of the die deformation area in the stamping test site;
and S4, recording the stamping experimental data, correcting the parameters in the simulation formula, and repeating the step S2 and the step S3 to obtain the most approximate result.
The simulation device for the die surface thinning method of the stamping die further comprises a bottom plate 1, wherein the outer wall of the top of the bottom plate 1 is connected with a die body 2;
the bottom plate 1 is also connected with a pressing mechanism for fixing the die body 2;
the top of the bottom plate 1 is connected with a top plate 3 through a support rod 102, the top of the top plate 3 is provided with a through hole 301, a stamping rod 5 is connected in the through hole 301 in a sliding mode, and the bottom of the stamping rod 5 is connected with a stamping head 501 matched with the die body 2;
the top of the stamping rod 5 is integrally connected with a threaded rod 502, and the outer wall of the threaded rod 502 is slidably connected with a balancing weight 506.
The bottom of the top plate 3 is connected with a fixing plate 303, the fixing plate 303 is provided with a through groove 304 and a clamping groove 305, the outer wall of the stamping rod 5 is further connected with a clamping block 505, the clamping block 505 is slidably connected in the through groove 304, and the clamping block 505 is matched with the clamping groove 305.
The outer wall of the threaded rod 502 is connected with a fixing nut 503 through threads, the fixing nut 503 abuts against the outer wall of the balancing weight 506, and the top of the threaded rod 502 is further connected with a pull ring 504.
The bottom of fixed plate 303 is connected with circular arc board 6, is equipped with spout 601 on the circular arc board 6, and fixture block 505 sliding connection still is equipped with scale mark 602 in spout 601, the outer wall of circular arc board 6.
The outer wall of the top plate 3 is also provided with a placing groove 302 matched with the balancing weight 506.
Hold-down mechanism includes lead screw 4 and briquetting 401, and briquetting 401 sliding connection still is equipped with rubber pad 405 at the outer wall of lead screw 4 in the bottom of briquetting 401, and rubber pad 405 offsets with the outer wall of mould body 2.
An elongated slot 103 is arranged in the bottom plate 1, the screw rod 4 is slidably connected in the elongated slot 103, the bottom of the screw rod 4 is also connected with a limiting plate 402, the outer wall of the screw rod 4 is also in threaded connection with a locking knob 403, and the locking knob 403 abuts against the outer wall of the top of the pressing block 401.
The outer wall of the screw rod 4 is further sleeved with a spring piece 404, and the spring piece 404 is respectively abutted to the outer wall of the bottom of the pressing block 401 and the outer wall of the top of the bottom plate 1.
The bottom of the bottom plate 1 is connected with a support seat 101.
In the invention, firstly, the position of the die body 2 to be checked is determined according to the structural elements of the die body 2, then the die body 2 is placed on the bottom plate 1 on the simulation device, and then the die body is fixed through the hold-down mechanism, so that the die surface to be simulated corresponds to the positions of the stamping rod 5 and the stamping head 501, and the screw rod 4 can slide in the long groove 103, so that the die body 2 can be fixed at different positions, specifically, the pressing block 401 is propped against the die body 2, the rubber pad 405 at the bottom of the pressing block 401 can prevent the pressing block from crushing the die body 2, the locking knob 403 is screwed to press the pressing block 401, meanwhile, the limiting plate 402 is propped against the outer wall at the bottom of the bottom plate 1, so that the pressing block 401 presses the die body 2, the spring piece 404 can prevent the pressing block 401 from largely inclining, the hold-down effect is enhanced, and then the pull ring 504 is pulled, the fixture block 505 on the stamping rod 5 is placed in the through groove 304, then the pull ring 504 is loosened, the stamping rod 5 can drive the stamping head 501 to stamp the die body 2, so that the actual deformation effect of the die body 2 is observed, the stamping rod 5 can fall more stably through the arc plate 6 and the sliding groove 601, the arc plate 6 is in smooth contact with the stamping rod 5 and the fixture block 505, the test result is not influenced, the generated friction is negligible, the scale mark 602 can conveniently observe the falling height of the stamping rod 5, the fixture block 505 cannot touch the bottom of the sliding groove 601, the stamping result is prevented from being influenced, then the stamping result is compared with a finite element analysis method, the deformation amount of the die surface is calculated through a simulation formula, the weight of the stamping rod 5 can be increased through adding the counterweight block 506 on the threaded rod 502, and then the stamping rod is fixed through the fixing nut 503, so that the deformation amount of the die body 2 is repeatedly tested, and (4) performing multiple tests, correcting the parameters of the simulation formula, and summarizing a final result, so that the structural rigidity of the die is enhanced, the elastic deformation of the rigidity of the die is reduced, and the workload of a bench worker for trimming the die surface of the die is reduced.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. A die surface refining method of a stamping die is characterized by comprising the following steps:
s1, determining an optimized area of the die surface of the die according to the structural elements of the die;
s2, carrying out finite element simulation on the die by adopting a finite element analysis method to obtain the contact force between the die surface of the die and the blank in the stamping process, and estimating the deformation quantity of different areas of the die surface by a simulation formula;
s3, verifying the simulation accuracy according to the actual deformation of the die deformation area in the stamping test site;
s4, recording stamping experiment data, correcting parameters in the simulation formula, and repeatedly operating the steps S2 and S3 to obtain a most approximate result;
the die surface thinning method of the stamping die is implemented by adopting a simulation device of the die surface thinning method of the stamping die, the simulation device of the die surface thinning method of the stamping die comprises a bottom plate (1), and the outer wall of the top of the bottom plate (1) is connected with a die body (2); the bottom plate (1) is also connected with a pressing mechanism for fixing the die body (2); the top of the bottom plate (1) is connected with a top plate (3) through a support rod (102), the top of the top plate (3) is provided with a through hole (301), a stamping rod (5) is connected in the through hole (301) in a sliding mode, and the bottom of the stamping rod (5) is connected with a stamping head (501) matched with the die body (2); the top of the stamping rod (5) is integrally connected with a threaded rod (502), and the outer wall of the threaded rod (502) is connected with a balancing weight (506) in a sliding manner; the bottom of the top plate (3) is connected with a fixing plate (303), the fixing plate (303) is provided with a through groove (304) and a clamping groove (305), the outer wall of the stamping rod (5) is further connected with a clamping block (505), the clamping block (505) is connected in the through groove (304) in a sliding manner, the clamping block (505) is matched with the clamping groove (305), the outer wall of the threaded rod (502) is connected with a fixing nut (503) in a threaded manner, the fixing nut (503) is abutted to the outer wall of the balancing weight (506), the top of the threaded rod (502) is further connected with a pull ring (504), the bottom of the fixing plate (303) is connected with an arc plate (6), the arc plate (6) is provided with a sliding groove (601), the clamping block (505) is connected in the sliding groove (601) in a sliding manner, the outer wall of the arc plate (6) is further provided with scale marks (602), the outer wall of the top plate (3) is further provided with a placing groove (302) matched with the balancing weight (506), the die body (2) is punched through the punching head (501), so that the actual deformation effect of the die body (2) is observed.
2. The method for refining the die surface of the stamping die as claimed in claim 1, wherein the pressing mechanism comprises a screw (4) and a pressing block (401), the pressing block (401) is slidably connected to the outer wall of the screw (4), a rubber pad (405) is further arranged at the bottom of the pressing block (401), and the rubber pad (405) abuts against the outer wall of the die body (2).
3. The die surface thinning method of the stamping die as claimed in claim 2, wherein a long groove (103) is arranged in the bottom plate (1), the screw rod (4) is slidably connected in the long groove (103), a limiting plate (402) is further connected to the bottom of the screw rod (4), a locking knob (403) is further connected to the outer wall of the screw rod (4) in a threaded manner, and the locking knob (403) abuts against the outer wall of the top of the pressing block (401).
4. The method for thinning the die surface of the stamping die according to claim 3, wherein a spring piece (404) is further sleeved on the outer wall of the screw rod (4), and the spring piece (404) is respectively abutted against the outer wall of the bottom of the pressing block (401) and the outer wall of the top of the bottom plate (1).
5. The method for thinning the die surface of a press die according to claim 4, wherein a support base (101) is attached to the bottom of the bottom plate (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911093631.1A CN111054829B (en) | 2019-11-11 | 2019-11-11 | Die surface refining method of stamping die |
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| CN201911093631.1A CN111054829B (en) | 2019-11-11 | 2019-11-11 | Die surface refining method of stamping die |
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| CN111054829A CN111054829A (en) | 2020-04-24 |
| CN111054829B true CN111054829B (en) | 2022-07-22 |
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| CN114713661B (en) * | 2022-04-13 | 2024-01-26 | 重庆电子工程职业学院 | Method for repairing stamping die by referring to workpiece rebound parameters |
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| JP2002263750A (en) * | 2001-03-09 | 2002-09-17 | Yamaha Fine Technologies Co Ltd | Punch die |
| CN102169521A (en) * | 2011-04-25 | 2011-08-31 | 天津职业技术师范大学 | Design method for molded surface of automobile cover part die based on molded surface deformation compensation |
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