CN111451719A - High-precision stamping process of sheet metal part for laser - Google Patents
High-precision stamping process of sheet metal part for laser Download PDFInfo
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- CN111451719A CN111451719A CN202010189123.XA CN202010189123A CN111451719A CN 111451719 A CN111451719 A CN 111451719A CN 202010189123 A CN202010189123 A CN 202010189123A CN 111451719 A CN111451719 A CN 111451719A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
The invention discloses a high-precision stamping process of a sheet metal part for a laser, which comprises the following steps of: a. cutting; b. shearing corners; c. heating and preserving heat; d. moving into a stamping die; e. and (4) stamping and forming. Through the mode, the high-precision stamping process of the sheet metal part for the laser, provided by the invention, comprises the steps of firstly carrying out pretreatment such as setting the positioning hole and the shearing angle on the sheet metal part, then carrying out stamping treatment on the sheet metal part after heating, and meanwhile, enabling the die to play a good lubricating role during stamping, ensuring the precision of the sheet metal part, controlling the resilience rate of the sheet metal part, ensuring the uniform stamping thickness and improving the qualification rate of the sheet metal part.
Description
Technical Field
The invention relates to the technical field of sheet metal parts, in particular to a high-precision stamping process of a sheet metal part for a laser.
Background
The precision requirement of the stamping process on the process is very high, if one process cannot meet the process requirement, the subsequent process further enlarges the error of the workpiece, so that the sheet metal part cannot be used, and the workpiece is scrapped. In the field of stamping process, two modes of isothermal stamping forming and differential temperature stamping forming are generally adopted for stamping forming of light alloys such as sheet metal parts, wherein isothermal stamping forming is adopted, the plastic deformation capacity of the light alloys such as the sheet metal parts can be obviously improved, the stamping forming performance is improved, but concentrated plastic deformation is easily generated at the corner part of a male die in the forming process, and premature cracking of the stamping parts is caused, so that the stamping performance of the light alloy stamping parts such as the sheet metal parts is limited, and the stamping performance of the sheet metal parts can be effectively improved through the other type of differential temperature stamping forming, but along with the reduction of temperature, the rebound of the sheet metal parts can be sharply increased, the size stability can be seriously influenced, and the thickness distribution of the stamping.
Disclosure of Invention
The invention mainly solves the technical problem of providing a high-precision stamping process of a sheet metal part for a laser, and aims to solve the problems in the background technology.
In order to solve the technical problems, the invention adopts a technical scheme that: the high-precision stamping process of the sheet metal part for the laser comprises the following steps:
a. cutting: cutting the plate into plates by using a plate shearing machine according to the product drawing of the stamping part, and arranging positioning holes;
b. corner shearing: determining the position of a shearing angle according to the height of bending required at four corners of a plate material, and then performing shearing angle processing by adopting an inclination angle of 30-50 degrees to form a bevel edge, wherein the included angle between the shearing angle of the bevel edge and a horizontal line is 30-50 degrees;
c. heating and heat preservation: putting the plate after the corner shearing into a heating furnace, heating to 225-285 ℃, keeping the temperature for 25-45 minutes, and cooling the furnace;
d. moving into a stamping die: preheating a stamping die to the temperature of 125-;
e. and (4) performing punch forming, namely performing punch forming on the plate in the stamping die by adopting stamping equipment to obtain the sheet metal part.
In a preferred embodiment of the present invention, in the step a, the plate shearing machine performs cutting by using a laser cutting method.
In a preferred embodiment of the present invention, the suspension in step c comprises 3.5-8.5 parts by weight of graphite, 3-8 parts by weight of ethylene glycol, 12-18 parts by weight of ethanol, 2.5-5.5 parts by weight of ethyl acrylate, 0.6-2.2 parts by weight of sodium dodecyl sulfate and 73.5-85.5 parts by weight of water.
In a preferred embodiment of the present invention, the suspension in step c comprises 4-6 parts by weight of graphite, 3-5 parts by weight of ethylene glycol, 15-16 parts by weight of ethanol, 3.5-4.5 parts by weight of ethyl acrylate, 0.8-1.6 parts by weight of sodium dodecyl sulfate and 80 parts by weight of water.
In a preferred embodiment of the present invention, the punching device in step e is a high-speed mechanical punch or a pneumatic punch.
In a preferred embodiment of the present invention, the pressure for stamping molding in step e is 800-.
The invention has the beneficial effects that: according to the high-precision stamping process of the sheet metal part for the laser, provided by the invention, the sheet metal part is subjected to pretreatment such as positioning holes and shearing angles, and then is subjected to stamping treatment after being heated, and meanwhile, a die plays a good lubricating role during stamping, so that the precision of the sheet metal part is ensured, the resilience rate of the sheet metal part is controlled, the stamping thickness is uniform, and the qualification rate of the sheet metal part is improved.
Drawings
Fig. 1 is a flowchart of a high-precision stamping process of a sheet metal part for a laser according to a preferred embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, an embodiment of the present invention includes:
a high-precision stamping process of a sheet metal part for a laser comprises the following steps:
a. cutting: cutting the plate into plates by using a plate shearing machine according to the product drawing of the stamping part, and arranging positioning holes;
b. corner shearing: determining the position of a shearing angle according to the height of bending required at four corners of a plate material, and then performing shearing angle processing by adopting an inclination angle of 30-50 degrees to form a bevel edge, wherein the included angle between the shearing angle of the bevel edge and a horizontal line is 30-50 degrees;
c. heating and heat preservation: putting the plate after the corner shearing into a heating furnace, heating to 225-285 ℃, keeping the temperature for 25-45 minutes, and cooling the furnace;
d. moving into a stamping die: preheating a stamping die to the temperature of 125-;
e. and (4) performing punch forming, namely performing punch forming on the plate in the stamping die by adopting stamping equipment to obtain the sheet metal part.
In the above, the plate shearing machine in the step a performs cutting by using a laser cutting method; and e, adopting a high-speed mechanical punch press or a pneumatic punch press as the punching equipment in the step e. Wherein the pressure for stamping forming is 800-.
In this embodiment, the suspension in step c includes 3.5-8.5 parts by weight of graphite, 3-8 parts by weight of ethylene glycol, 12-18 parts by weight of ethanol, 2.5-5.5 parts by weight of ethyl acrylate, 0.6-2.2 parts by weight of sodium dodecyl sulfate, and 73.5-85.5 parts by weight of water. Or, the suspension in the step c comprises 4-6 parts by weight of graphite, 3-5 parts by weight of ethylene glycol, 15-16 parts by weight of ethanol, 3.5-4.5 parts by weight of ethyl acrylate, 0.8-1.6 parts by weight of sodium dodecyl sulfate and 80 parts by weight of water.
Example 1:
a high-precision stamping process of a sheet metal part for a laser comprises the following steps:
a. cutting: cutting the plate into plates by using a plate shearing machine according to the product drawing of the stamping part, and arranging positioning holes;
b. corner shearing: determining the position of a shear angle according to the height of bending required at four corners of a sheet material, and then performing shear angle processing by adopting an inclination angle of 30 degrees to form a bevel edge, wherein the included angle between the shear angle of the bevel edge and a horizontal line is 30 degrees;
c. heating and heat preservation: putting the plate with the cut corners into a heating furnace, heating to 225 ℃, keeping the temperature for 25 minutes, and cooling the furnace;
d. moving into a stamping die: preheating a stamping die to 125 ℃, spraying a suspension liquid in the stamping die, and clamping a plate by a mechanical arm and quickly transferring the plate into the stamping die when the temperature of the plate is reduced to be consistent with that of the stamping die;
e. and (4) performing punch forming, namely performing punch forming on the plate in the punching die by adopting punching equipment, wherein the pressure of the punch forming is 800t, and thus obtaining the sheet metal part.
Wherein the suspension in the step c comprises 4.5 parts by weight of graphite, 4 parts by weight of ethylene glycol, 8 parts by weight of ethanol, 3.5 parts by weight of ethyl acrylate, 1 part by weight of sodium dodecyl sulfate and 75 parts by weight of water.
Example 2:
a high-precision stamping process of a sheet metal part for a laser comprises the following steps:
a. cutting: cutting the plate into plates by using a plate shearing machine according to the product drawing of the stamping part, and arranging positioning holes;
b. corner shearing: determining the position of a shear angle according to the height of bending required at four corners of a sheet material, and then performing shear angle processing by adopting an inclination angle of 45 degrees to form a bevel edge, wherein the included angle between the shear angle of the bevel edge and a horizontal line is 45 degrees;
c. heating and heat preservation: putting the plate with the cut corners into a heating furnace, heating to 265 ℃ at the heating speed of 50 ℃/min, and keeping the temperature for 35 minutes, and then cooling the furnace;
d. moving into a stamping die: preheating a stamping die to 135 ℃, spraying a suspension liquid in the stamping die, and clamping a plate by a mechanical arm and quickly transferring the plate into the stamping die when the temperature of the plate is reduced to be consistent with that of the stamping die;
e. and (4) performing punch forming, namely performing punch forming on the plate in the stamping die by adopting stamping equipment, wherein the pressure of the punch forming is 900t, and thus obtaining the sheet metal part.
Wherein the suspension in the step c comprises 4.5 parts by weight of graphite, 6 parts by weight of ethylene glycol, 8.5 parts by weight of ethanol, 4 parts by weight of ethyl acrylate, 1 part by weight of sodium dodecyl sulfate and 80 parts by weight of water.
Example 3:
a high-precision stamping process of a sheet metal part for a laser comprises the following steps:
a. cutting: cutting the plate into plates by using a plate shearing machine according to the product drawing of the stamping part, and arranging positioning holes;
b. corner shearing: determining the position of a shear angle according to the height of bending required at four corners of a sheet material, and then performing shear angle processing by adopting an inclination angle of 50 degrees to form a bevel edge, wherein the included angle between the shear angle of the bevel edge and a horizontal line is 50 degrees;
c. heating and heat preservation: putting the plate with the cut corners into a heating furnace, heating to 285 ℃, keeping the temperature for 45 minutes, and cooling the furnace;
d. moving into a stamping die: preheating a stamping die to 145 ℃, spraying a suspension liquid in the stamping die, and clamping a plate by using a mechanical arm to quickly transfer the plate into the stamping die when the temperature of the plate is reduced to be consistent with that of the stamping die;
e. and (4) performing punch forming, namely performing punch forming on the plate in the punching die by adopting punching equipment, wherein the pressure of the punch forming is 1000t, and thus obtaining the sheet metal part.
Wherein the suspension in the step c comprises 5 parts by weight of graphite, 8 parts by weight of ethylene glycol, 9 parts by weight of ethanol, 5.5 parts by weight of ethyl acrylate, 1 part by weight of sodium dodecyl sulfate and 85 parts by weight of water.
In the process of preparing the suspension, the graphite is preferably 4.5 to 5 parts by weight, the ethanol is preferably 8 to 9 parts by weight, and the sodium dodecyl sulfate is preferably 1 part by weight. Wherein, the water in the turbid liquid can be volatilized quickly, and the graphite remained on the die can achieve the lubricating effect; the sodium dodecyl sulfate is used, so that the graphite can be dispersed and can also be used as an emulsifier of the ethyl acrylate; the ethanol can accelerate the evaporation speed of the graphite solvent, and the ethyl acrylate and the glycol can enable the graphite to become a graphite film with uniform distribution.
The temperature of the stamping die is 125-145 ℃, the surface temperature of the die is lower than 100 ℃ at the moment of spraying the turbid liquid, then the surface temperature of the die is raised, the ethyl acrylate, the ethanol and the water are volatilized, and the graphite is uniformly distributed on the surface of the die to form a graphite film. Therefore, the turbid liquid prepared by the method has a good lubricating effect on the stamping die, so that the precision and the qualification rate of products are improved.
In summary, according to the high-precision stamping process for the sheet metal part for the laser, provided by the invention, the sheet metal part is subjected to pretreatment such as positioning holes and shearing angles, and then is subjected to stamping treatment after being heated, and meanwhile, a die plays a good lubricating role during stamping, so that the precision of the sheet metal part is ensured, the resilience rate of the sheet metal part is controlled, the stamping thickness is uniform, and the qualification rate of the sheet metal part is improved.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. The high-precision stamping process of the sheet metal part for the laser is characterized by comprising the following steps of:
a. cutting: cutting the plate into plates by using a plate shearing machine according to the product drawing of the stamping part, and arranging positioning holes;
b. corner shearing: determining the position of a shearing angle according to the height of bending required at four corners of a plate material, and then performing shearing angle processing by adopting an inclination angle of 30-50 degrees to form a bevel edge, wherein the included angle between the shearing angle of the bevel edge and a horizontal line is 30-50 degrees;
c. heating and heat preservation: putting the plate after the corner shearing into a heating furnace, heating to 225-285 ℃, keeping the temperature for 25-45 minutes, and cooling the furnace;
d. moving into a stamping die: preheating a stamping die to the temperature of 125-;
e. and (4) performing punch forming, namely performing punch forming on the plate in the stamping die by adopting stamping equipment to obtain the sheet metal part.
2. The high-precision stamping process of the sheet metal part for the laser machine as claimed in claim 1, wherein the plate shearing machine in the step a performs cutting by laser cutting.
3. The high-precision stamping process of a sheet metal part for a laser according to claim 1, wherein the suspension in step c comprises 3.5-8.5 parts by weight of graphite, 3-8 parts by weight of ethylene glycol, 12-18 parts by weight of ethanol, 2.5-5.5 parts by weight of ethyl acrylate, 0.6-2.2 parts by weight of sodium dodecyl sulfate and 73.5-85.5 parts by weight of water.
4. A high-precision stamping process for sheet metal parts for laser according to claim 3, wherein the suspension in step c comprises 4-6 parts by weight of graphite, 3-5 parts by weight of ethylene glycol, 15-16 parts by weight of ethanol, 3.5-4.5 parts by weight of ethyl acrylate, 0.8-1.6 parts by weight of sodium dodecyl sulfate and 80 parts by weight of water.
5. The high-precision stamping process of the sheet metal part for the laser machine as claimed in claim 1, wherein the stamping device in step e is a high-speed mechanical press or a pneumatic press.
6. The high-precision stamping process of the sheet metal part for the laser machine as claimed in claim 1, wherein the stamping forming pressure in step e is 800-.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010189123.XA CN111451719A (en) | 2020-03-18 | 2020-03-18 | High-precision stamping process of sheet metal part for laser |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010189123.XA CN111451719A (en) | 2020-03-18 | 2020-03-18 | High-precision stamping process of sheet metal part for laser |
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| CN111451719A true CN111451719A (en) | 2020-07-28 |
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| CN202010189123.XA Pending CN111451719A (en) | 2020-03-18 | 2020-03-18 | High-precision stamping process of sheet metal part for laser |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101985199A (en) * | 2009-07-29 | 2011-03-16 | 比亚迪股份有限公司 | Method for preparing shell of electronics |
| CN103394573A (en) * | 2013-08-02 | 2013-11-20 | 上海交通大学 | Hot stamping forming process based on Q&P one-step method |
| CN104084758A (en) * | 2014-06-16 | 2014-10-08 | 张家港市华程异型钢管有限公司 | Processing technology for sheet metal parts |
| US20160167181A1 (en) * | 2014-08-27 | 2016-06-16 | Cheung Woh Technologies Ltd. | Method and apparatus for forming a hard disk drive base plate with an extended height |
| CN107584026A (en) * | 2017-11-02 | 2018-01-16 | 江苏钧骋车业有限公司 | A kind of Sheet Metal Forming Technology of sheet metal component and corresponding mould |
| CN108555105A (en) * | 2017-12-01 | 2018-09-21 | 宁波诚泰汽车部件有限公司 | A kind of sheet metal component precision punching process |
| CN109433960A (en) * | 2018-09-30 | 2019-03-08 | 苏州普热斯勒先进成型技术有限公司 | Drop stamping high-strength steel automobile body covering piece and its manufacturing method, manufacture system |
-
2020
- 2020-03-18 CN CN202010189123.XA patent/CN111451719A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101985199A (en) * | 2009-07-29 | 2011-03-16 | 比亚迪股份有限公司 | Method for preparing shell of electronics |
| CN103394573A (en) * | 2013-08-02 | 2013-11-20 | 上海交通大学 | Hot stamping forming process based on Q&P one-step method |
| CN104084758A (en) * | 2014-06-16 | 2014-10-08 | 张家港市华程异型钢管有限公司 | Processing technology for sheet metal parts |
| US20160167181A1 (en) * | 2014-08-27 | 2016-06-16 | Cheung Woh Technologies Ltd. | Method and apparatus for forming a hard disk drive base plate with an extended height |
| CN107584026A (en) * | 2017-11-02 | 2018-01-16 | 江苏钧骋车业有限公司 | A kind of Sheet Metal Forming Technology of sheet metal component and corresponding mould |
| CN108555105A (en) * | 2017-12-01 | 2018-09-21 | 宁波诚泰汽车部件有限公司 | A kind of sheet metal component precision punching process |
| CN109433960A (en) * | 2018-09-30 | 2019-03-08 | 苏州普热斯勒先进成型技术有限公司 | Drop stamping high-strength steel automobile body covering piece and its manufacturing method, manufacture system |
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Application publication date: 20200728 |