CN103212609A - Mould for bending forming of electric bicycle cover plate - Google Patents
Mould for bending forming of electric bicycle cover plate Download PDFInfo
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- CN103212609A CN103212609A CN2013101364941A CN201310136494A CN103212609A CN 103212609 A CN103212609 A CN 103212609A CN 2013101364941 A CN2013101364941 A CN 2013101364941A CN 201310136494 A CN201310136494 A CN 201310136494A CN 103212609 A CN103212609 A CN 103212609A
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- cover plate
- mould
- straight line
- electric bicycle
- brake forming
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Abstract
The invention relates to a mould for bending forming of an electric bicycle cover plate. The mould for bending forming machine of the electric bicycle cover plate comprises a middle segment arc mould main body, a left-end straight line mould and a right-end straight line mould, wherein the middle segment arc mould main body and the left-end straight line mould are formed integrally, the middle segment arc mould main body and the right-end straight line mould are formed integrally, working grooves are formed on the upper end faces of the middle segment arc mould main body, the left-end straight line mould and the right-end straight line mould, the working grooves are provided with contact surfaces, and the contact surfaces can be tightly contacted with a cover plate blank in bending forming of the cover plate. By means of the mould for bending forming of an electric bicycle cover plate, the electric bicycle cover plate can be formed through one machining operation, energy is saved, and efficiency is improved. Meanwhile, the machined cover plate is good in property and high in strength, and the surface of the machined cover plate is provided with no fold.
Description
Technical field
The present invention relates to the technical field of electric bicycle accessory, more particularly, the present invention relates to a kind of electric bicycle cover plate brake forming mould.
Background technology
The theory of current social environmental protection is rooted in the hearts of the people, and becomes a kind of new life style.The theory of environmental protection not only requires people to pay attention to energy conservation, is more that also people pay attention to green and the safety to inhabitation and living environment more, and realizes sustainable development.
Yet current development along with China's economic society, the air pollution situation in city but is on the rise, show that according to up-to-date research report the urban air of present China 90% is subjected to different pollutions of containing soil, airborne pollutant such as PM2.5 and PM10 have badly influenced the healthy of resident.And urban air pollution is heavy, and emission of automobile wastes is a primary factor wherein.Advocate Green Travel for this reason, greatly develop the main development trend of the following beyond doubt short pain traffic trip of public transport and electric motor car trip.
That electric bicycle has is light, speed is moderate, noiselessness and take up room for a short time, can improve the advantage of bicycle lane traffic efficiency greatly, has the advantage that other vehicles hardly match.At present, electric bicycle has obtained popularizing widely in southern part city and vast rural area, becomes the main vehicles of vast wage-earners in city and vast farmers.
At present, the electric bicycle cover plate all is to make by hot rolling technology, yet hot rolling is that the metal or alloy base is heated through high temperature, rolling then forming, so energy consumption height, and complex process, under current energy-intensive situation, inferior position is more obvious.And brake forming is a kind of advanced person, sheetmetal molding technology thereof efficiently.Brake forming is the multi-pass molding roller by arranged in order, and coiled material, band etc. is constantly carried out transverse curvature, to make the section bar of given shape.The brake forming process need not heating, is a kind of material-saving, energy-conservation, metal blank forming process, new technology efficiently.Utilize this technology, not only can produce high-quality shape product, and can shorten product development cycle, enhance productivity, thereby improve the market competitiveness of enterprise.
The present inventor adopts forming mill of the prior art to utilize in the process of No. 45 crooked preparation of steel board blank electric bicycle cover plates, the lid surface quality of finding the crooked preparation of pattern of the prior art is not good enough, and the no stripper of mould self, operation inconvenience, and die surface is owing to wear no resistance, cause inefficiency, can not satisfy large-scale production.Probe into its reason and be that mainly mould often is to cause the underproof main cause of product quality, prepare key factor wear-resisting and that mould greasy property is the electric bicycle brake forming for this reason.
Summary of the invention
In order to solve the above-mentioned technical problem that exists in the prior art, the object of the present invention is to provide a kind of electric bicycle cover plate brake forming mould.Adopt electric bicycle cover plate of the present invention brake forming can realize the one-time mechanical machine-shaping of electric motor car cover plate, promptly saved the energy, improved efficient with mould; And the cover plate excellent performance for preparing, its surperficial corrugationless, and intensity height.
In order to solve the problems of the technologies described above and realize above-mentioned purpose, the invention provides following technical scheme:
A kind of electric bicycle cover plate brake forming mould comprises circular arc stage casing die main body, left end straight line mould and right-hand member straight line mould, and described circular arc stage casing die main body and described left end straight line mould are one-body molded; And described circular arc stage casing die main body and described right-hand member straight line mould are one-body molded; And described circular arc stage casing die main body, left end straight line mould and straight line mould upper surface all offer work nest, and described work nest has the contact bottom surface, and described contact bottom surface can closely contact with the cover plate blank when brake forming.
Wherein, the radius of described circular arc stage casing die main body is 300-650 mm, and the length of left end straight line mould and right-hand member straight line mould is 150-250 mm.
Wherein, described electric bicycle cover plate brake forming uses mould by No. 45 steel process forging moldings.Wherein, forging temperature is 900-950 ℃; Forging molding is at N
2Carry out modifier treatment in the atmosphere, described modifier treatment comprises: at first handled 10-20 minute at 850 ℃ of following constant temperature, 50 ℃ of quenching oil quenchings 1-2 minute, be heated to 650 ℃ after the quenching, temper 60-80 minute then.After the modifier treatment, product surface hardness HB230-255, tensile strength can reach 600-750MPa, minimum 420 MPa that reach of yield strength.At first carrying out constant temperature in the modified step of the present invention handles, workpiece at high temperature through guaranteeing that internal and external temperature is tending towards identical after the diffusion heat exchange, when workpiece enters the quenching oil quenching, has guaranteed uniform hardening, significantly improve quenching degree, improved the intensity of case hardness and material.
Because the cover plate brake forming needs frequent contacting with the cover plate blank and rubbing with the contact bottom surface of mould, as mentioned above, although this cover plate brake forming has had higher hardness with mould, but use still can come in contact the phenomenon of bottom surface heavy wear for a long time, and stick together with surface of the work, cause the surface of the work damage and occur fold easily.Apply the wear-resistant unsticky coating on the contact of the present invention for this reason bottom surface, described wear-resistant unsticky coating can be improved contacting of contact bottom surface and cover plate blank, reduce contact friction and wearing and tearing between the two, also avoided the bonding of cover plate blank simultaneously, help improving the quality of lid surface.Described wear-resistant unsticky coating forms by cold spraying wear-resistant unsticky coating, and thickness is 1-5 mm; Described non-viscous paint comprises: the nanometer SiO of 5-15wt%
2, 8-18wt% nanometer Si
3N
4, 7-12wt% BaF
2, the PTFE particle (5-20 um) of 22-35wt%, the polymethyl siloxane of 0.5-1.2wt% and the silane coupler of surplus.
Compared with prior art, the present invention has following beneficial effect:
(1) cover plate of the present invention is applicable to the cover plate brake forming of electric motor car with mould, need not heating in the brake forming process, has the advantage of efficient energy-saving and material-saving.And utilize cover plate of the present invention to have very high surface smoothness and dimensional accuracy by the electric motor car cover plate that brake forming prepares with mould, surperficial corrugationless, double effects with economical with materials and energy savings.
(2) cover plate of the present invention adopts forging molding with mould itself, is that raw material has significantly improved quenching degree through after the modifier treatment with No. 45 common steel, has improved the intensity of case hardness and material; And cold spraying has the wear-resistant unsticky coating on the contact-making surface, and the coefficient of friction of described contact-making surface can reach 0.08-0.15; HRC hardness reaches 45-53; Have good lubricated and anti-wear performance, sound assurance do not produce the phenomenon of bonding between mould and the cover plate.
Description of drawings
Fig. 1 is the structural representation of electric bicycle cover plate brake forming of the present invention with mould.
The specific embodiment
As shown in Figure 1, the electric bicycle cover plate brake forming mould of present embodiment, comprise circular arc stage casing die main body 10, left end straight line mould 20 and right-hand member straight line mould 30, the radius of described circular arc stage casing die main body is 300-650 mm, and the length of left end straight line mould and right-hand member straight line mould is 150-250 mm; Described circular arc stage casing die main body and described left end straight line mould are one-body molded, and described circular arc stage casing die main body and described right-hand member straight line mould are one-body molded; And described circular arc stage casing die main body, left end straight line mould and straight line mould upper surface all offer work nest, and described work nest has the contact bottom surface, and described contact bottom surface can closely contact with the cover plate blank when brake forming, is used to realize the brake forming of cover plate.By No. 45 steel process forging moldings, forging temperature is 920 ℃ to described cover plate with mould.Behind the forging molding, at N
2Carry out modifier treatment in the atmosphere, described modifier treatment comprises: at first handled 20 minutes at 850 ℃ of following constant temperature, 50 ℃ of quenching oil quenchings 90 seconds, be heated to 650 ℃ after the quenching, temper 80 minutes then.Improved the intensity of case hardness and material after the modifier treatment, product surface hardness can reach HB250, and tensile strength is 720-750MPa, minimum 420 MPa that reach of yield strength.In addition owing to contact bottom surface needs frequent with workpiece the contacting and rub of cover plate with mould, although this cover plate has had higher hardness with mould, but along with the use of workpiece still can come in contact face heavy wear, and stick together with surface of the work, cause the surface of the work damage and occur fold easily.Apply the wear-resistant unsticky coating on the described contact of the present embodiment bottom surface for this reason, described wear-resistant unsticky coating can be improved contacting of contact bottom surface and cover plate blank surface, reduce contact friction and wearing and tearing between the two, simultaneously also avoid sticking of cover plate blank, helped improving the quality of lid surface.Described wear-resistant unsticky coating forms by cold spraying wear-resistant unsticky coating, and thickness is 1-5 mm; Described non-viscous paint comprises: the nanometer SiO of 8wt%
2, 12wt% nanometer Si
3N
4, 8wt% BaF
2, the PTFE particle (5-10 um) of 27wt%, the polymethyl siloxane of 1.0wt% and the γ-An Bingjisanjiayangjiguiwan of surplus.Behind the above-mentioned wear-resistant paint of cold spraying, the coefficient of friction of described contact-making surface can reach 0.08-0.12; HRC hardness reaches 48-53; Thereby give mould good lubricated and anti-wear performance.The described cover plate of present embodiment is applicable to the cover plate brake forming of electric motor car with mould, need not heating in the brake forming process, has the advantage of efficient energy-saving and material-saving.And utilize cover plate of the present invention to have very high surface smoothness and dimensional accuracy by the electric motor car cover plate that brake forming prepares with mould, surperficial corrugationless, double effects with economical with materials and energy savings.
Though specific embodiment part elaborates technical scheme of the present invention by embodiment, but those of ordinary skill in the art is to be understood that and can breaking away from the scope disclosed by the invention, can adopt to be equal to and replace or the enforcement of equivalent transformation form.Therefore, protection scope of the present invention is not limited to the foregoing description, and the embodiment of short of disengaging invention essence all is interpreted as having dropped within protection scope of the present invention.
Claims (8)
1. an electric bicycle cover plate brake forming mould comprises circular arc stage casing die main body, left end straight line mould and right-hand member straight line mould, it is characterized in that: described circular arc stage casing die main body and described left end straight line mould are one-body molded; And described circular arc stage casing die main body and described right-hand member straight line mould are one-body molded; And described circular arc stage casing die main body, left end straight line mould and straight line mould upper surface all offer work nest, and described work nest has the contact bottom surface, and described contact bottom surface can closely contact with the cover plate blank when brake forming.
2. electric bicycle cover plate brake forming mould according to claim 1 is characterized in that: the radius of described circular arc stage casing die main body is 300-650 mm, and the length of left end straight line mould and right-hand member straight line mould is 150-250 mm.
3. electric bicycle cover plate brake forming mould according to claim 1 is characterized in that: by No. 45 steel process forging moldings, forging temperature is 900-950 ℃ to described cover plate with mould.
4. electric bicycle cover plate brake forming mould according to claim 3, it is characterized in that: mould is at N
2Carry out modifier treatment in the atmosphere, described modifier treatment comprises: at first handled 10-20 minute at 850 ℃ of following constant temperature, 50 ℃ of quenching oil quenchings 1-2 minute, be heated to 650 ℃ after the quenching, temper 60-80 minute then.
5. electric bicycle cover plate brake forming mould according to claim 4 is characterized in that: product surface hardness HB230-255, tensile strength can reach 600-750MPa, minimum 420 MPa that reach of yield strength.
6. according to each described electric bicycle cover plate brake forming mould of claim 1-5, it is characterized in that: on described contact bottom surface, have the wear-resistant unsticky coating.
7. electric bicycle cover plate brake forming mould according to claim 6 is characterized in that: described wear-resistant unsticky coating forms by cold spraying wear-resistant unsticky coating, and thickness is 1-5 mm; Described non-viscous paint comprises: the nanometer SiO of 5-15wt%
2, 8-18wt% nanometer Si
3N
4, 7-12wt% BaF
2, the PTFE particle of 22-35wt%, the polymethyl siloxane of 0.5-1.2wt% and the silane coupler of surplus.
8. electric bicycle cover plate brake forming mould according to claim 7, it is characterized in that: the coefficient of friction of described contact bottom surface is 0.08-0.15; HRC hardness is 45-53.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310136494.1A CN103212609B (en) | 2013-04-19 | 2013-04-19 | Mould for bending forming of electric bicycle cover plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310136494.1A CN103212609B (en) | 2013-04-19 | 2013-04-19 | Mould for bending forming of electric bicycle cover plate |
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| Publication Number | Publication Date |
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| CN103212609A true CN103212609A (en) | 2013-07-24 |
| CN103212609B CN103212609B (en) | 2015-05-13 |
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| CN201310136494.1A Active CN103212609B (en) | 2013-04-19 | 2013-04-19 | Mould for bending forming of electric bicycle cover plate |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS619928A (en) * | 1984-06-22 | 1986-01-17 | Taiheiyo Kogyo Kk | Punch for working edge bend |
| CN102218477A (en) * | 2011-04-26 | 2011-10-19 | 江苏同力机械有限公司 | Cold roll forming die for curved beam of passenger vehicle body |
| CN102240706A (en) * | 2011-05-09 | 2011-11-16 | 江苏同力机械有限公司 | Cold-bending forming process of F-shaped cover plate |
| CN102581145A (en) * | 2012-03-23 | 2012-07-18 | 马鞍山市国菱机械刃模有限公司 | Method for manufacturing high-hardness and high-abrasion-resistant pre-bending machine lower die |
| CN202701155U (en) * | 2012-07-20 | 2013-01-30 | 山东电力建设第二工程公司 | Grounding die for flat steel horizontal elbow manufacturing |
| CN202752454U (en) * | 2012-07-24 | 2013-02-27 | 南京海天轨道车辆装备有限公司 | Forming mold of passenger train big circular arc curved partition wall |
-
2013
- 2013-04-19 CN CN201310136494.1A patent/CN103212609B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS619928A (en) * | 1984-06-22 | 1986-01-17 | Taiheiyo Kogyo Kk | Punch for working edge bend |
| CN102218477A (en) * | 2011-04-26 | 2011-10-19 | 江苏同力机械有限公司 | Cold roll forming die for curved beam of passenger vehicle body |
| CN102240706A (en) * | 2011-05-09 | 2011-11-16 | 江苏同力机械有限公司 | Cold-bending forming process of F-shaped cover plate |
| CN102581145A (en) * | 2012-03-23 | 2012-07-18 | 马鞍山市国菱机械刃模有限公司 | Method for manufacturing high-hardness and high-abrasion-resistant pre-bending machine lower die |
| CN202701155U (en) * | 2012-07-20 | 2013-01-30 | 山东电力建设第二工程公司 | Grounding die for flat steel horizontal elbow manufacturing |
| CN202752454U (en) * | 2012-07-24 | 2013-02-27 | 南京海天轨道车辆装备有限公司 | Forming mold of passenger train big circular arc curved partition wall |
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|---|---|
| CN103212609B (en) | 2015-05-13 |
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Effective date of registration: 20181112 Address after: 230031 B-1014, 10 floor, business office building, Wo Ye garden, Shushan District, Hefei, Anhui. Patentee after: HEFEI WISDOM LONGTUTENG INTELLECTUAL PROPERTY CO., LTD. Address before: 318020 Xiaoli Huicun 110, Toutuo Town, Huangyan District, Taizhou City, Zhejiang Province Patentee before: Yang Yuanyuan |
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Effective date of registration: 20191120 Address after: 239000 Sanzhu team, Wangying village, Shizi Town, Quanjiao County, Chuzhou City, Anhui Province Patentee after: Anhui D & Automation Equipment Co Ltd Address before: 230031 Room B-1014, 10th Floor, Woye Garden Commercial Building, Shushan District, Hefei City, Anhui Province Patentee before: HEFEI WISDOM LONGTUTENG INTELLECTUAL PROPERTY CO., LTD. |
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