CN101418369A - Heat treating method of special-shaped plate spring and mould - Google Patents
Heat treating method of special-shaped plate spring and mould Download PDFInfo
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- CN101418369A CN101418369A CNA2008101979841A CN200810197984A CN101418369A CN 101418369 A CN101418369 A CN 101418369A CN A2008101979841 A CNA2008101979841 A CN A2008101979841A CN 200810197984 A CN200810197984 A CN 200810197984A CN 101418369 A CN101418369 A CN 101418369A
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- plate spring
- die
- steel plate
- positioning pin
- steady brace
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Abstract
The invention discloses a thermal processing method for a special form steel plate spring and a die thereof. The method comprises the following steps: 1 integrally heating the steel plate spring with a direct positioning pin hole to 900 DEGC; 2 pressing a positioning pin which undergoes normal temperature heat treatment into the positioning pin hole through a bending die, and prepressing and shaping the steel plate spring; 3 putting the steel plate spring which maintains the temperature of 850 DEG C into a quenching clamping head for shaping; and 4 putting the shaped steel plate spring wholly into oil for tempering and then obtaining a finished product. Therein, a positioning column is arranged on one end of the positioning pin; and column steps and internal cone steps are in turn arranged on the other end of the positioning pin. A convex surface upper die is arranged on an upper die plate of the die; a spring spindle is arranged between a lower die plate and a concave surface die; and a pressing pin positioning seat is arranged outside the spindle. The method makes use of the principle of expansion and contraction due to different materials of the positioning pin and the steel plate spring so as to make the positioning pin and the steel plate be matched with each other in the expansion inserting mode, thereby ensuring the product quality. A combination die is used to complete bending and pin pressing operation at one time; and the die is convenient and easy to use, thereby reducing the cost and improving the benefit.
Description
Technical field
The present invention relates to the automobile leaf spring field, especially a kind of heat treating method of special-shaped plate spring and mould.
Background technology
The automobile special-shaped plate spring need be used steady brace in assembling process, and the general employing of present steady brace is that direct selling and straight hole are pressed into welding fabrication again after Overheating Treatment, but in use powerful stress is arranged owing to shake generation in the running car, thereby cause the steady brace welding position to come off, loosening the running away of steady brace produces danger, so will a kind of new steady brace of demand and production method steady brace is not come off producing under the stress situation, in order to guarantee the driving safety of automobile.
Summary of the invention
Purpose of the present invention solves the automobile leaf spring steady brace exactly and does not come off under generation stress situation, a kind of plate spring steady brace is provided, this steady brace is handled the back without the welding direct heat and is pressed into mould, and the stress that is produced in the use can not make it come off.The present invention also provides a kind of heat treating method and mould that plate spring is pressed into steady brace that be used for.
For reaching above-mentioned purpose, the present invention has done improvement to steady brace: be provided with positioning cylinder at steady brace one end, the other end is provided with cylinder step and female cone step successively.
In order to make this steady brace can be pressed in the plate spring, heat treating method of the present invention comprises the steps: 1, will have the plate spring integral body of straight dowel hole to be heated to 900 ℃, 2, with bending die the steady brace under the heat treated normal temperature is pressed into dowel hole, and with the plate spring pre-molding, 3, again the plate spring that remains on 850 ℃ is put into the shaping of quenching chuck, 4, orthopedic plate spring integral body is gone into the oil tempering finished product.
For this steady brace being pressed in the plate spring and the moulding of plate spring proposes a kind of composite die, comprise bolster, it is characterized in that: on lower bolster, be provided with the concave surface counterdie, be provided with spring spindle between concave surface counterdie and lower bolster, spring spindle is provided with the pad positioning seat outward, and the two ends of bed die respectively are provided with preset pieces; Upper bolster is provided with the convex surface patrix, and the radian size of concave surface counterdie, convex surface patrix is the radian size of plate spring design.
Beneficial effect:
The present invention is pressed into hot steel plate with heat treated normal temperature steady brace earlier, utilize principle of expanding with heat and contracting with cold, making steady brace and plate spring expand tightly to expand is in the same place, because steady brace is different with the plate spring material, thermal treatment post shrinkage coefficient difference, steady brace is pressed into complete heat treatment behind the hot steel plate, make steady brace that inserted cooperation be arranged in plate spring, the stress that produces when guaranteeing to use can not make it come off, and quality product is protected, and has improved the reputation of enterprise.
In press-bending pad process, use press-bending pad composite die, press-bendings, pad are once finished, can process the product of 5 kinds of different sizes with a kind of bending die, the simple handling ease of this mould structure, cost is low, makes things convenient for easy-to-usely, has improved the benefit of company greatly.
Description of drawings
Fig. 1 is the left pseudosection that former processing location is sold directly to households and welded.
Fig. 2 is the left pseudosection after steady brace that the present invention uses is pressed into plate spring.
Fig. 3 is the front view of composite die of the present invention.
Fig. 4 is the left view of composite die of the present invention.
Embodiment
As Fig. 1, Fig. 2, Fig. 3, shown in Figure 4
1 is lower bolster, the 2nd among the figure, top plate, the 3rd, counterdie, the 4th, patrix, the 5th, preset pieces, the 6th, spring spindle, the 7th, pad positioning seat, the 8th, direct selling, the 9th, steady brace, the 10th, plate spring.
Use step of the present invention is as follows:
1, will there be plate spring 10 integral body of pilot hole to be heated to 900 ℃, 2, with bending die heat treated normal temperature steady brace 9 is pressed into plate spring 10, and with plate spring 10 pre-moldings, 3, again keeping 850 ℃ plate spring 10 to put into the shaping of quenching chuck, 4, orthopedic plate spring 10 integral body are gone into finished product after the oil tempering.
Mould of the present invention is after earlier the heat treated steady brace 9 of normal temperature being put into spring positioning seat 7, with bending die steady brace 9 to be pressed in the plate spring 10 that is heated to 900 ℃, and with plate spring 10 pre-moldings, to finish press-bending, pad operation.
Claims (3)
1, the heat treating method of special-shaped plate spring and mould, the constitutional features of its special-shaped steady brace is: be provided with positioning cylinder at steady brace one end, the other end is provided with cylinder step and female cone step successively.
2, a kind of heat treating method that is used for special-shaped plate spring is: 1, will have the plate spring integral body of dowel hole to be heated to 900 ℃, 2, be pressed into dowel hole with the bending die steady brace that normal temperature is heat treated, and with the plate spring pre-molding, 3, again the plate spring that remains on 850 ℃ is put into the shaping of quenching chuck, 4, orthopedic plate spring integral body is gone into the oil tempering finished product.
3, realize that the described mold feature that steady brace is pressed into the heat-treating methods of plate spring of claim 2 is: on lower bolster, be provided with the concave surface counterdie, be provided with spring spindle between concave surface counterdie and lower bolster, spring spindle is provided with the pad positioning seat outward, and the two ends of bed die respectively are provided with preset pieces; Upper bolster is provided with the convex surface patrix, and the radian size of concave surface counterdie, convex surface patrix is the radian size of plate spring design.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101979841A CN101418369A (en) | 2008-11-21 | 2008-11-21 | Heat treating method of special-shaped plate spring and mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101979841A CN101418369A (en) | 2008-11-21 | 2008-11-21 | Heat treating method of special-shaped plate spring and mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101418369A true CN101418369A (en) | 2009-04-29 |
Family
ID=40629369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101979841A Pending CN101418369A (en) | 2008-11-21 | 2008-11-21 | Heat treating method of special-shaped plate spring and mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101418369A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102527833A (en) * | 2011-12-16 | 2012-07-04 | 重庆红岩方大汽车悬架有限公司 | Technique for processing lug boss by using plate spring of automobile |
| CN106086369A (en) * | 2016-08-29 | 2016-11-09 | 河南广瑞汽车部件股份有限公司 | Prevent the method and device that plate spring seat for automobile isothermal hardening deforms |
| CN108980167A (en) * | 2018-06-30 | 2018-12-11 | 中国航空工业标准件制造有限责任公司 | Core bar of the head with tangent arc |
| CN110421371A (en) * | 2019-08-22 | 2019-11-08 | 山东双一科技股份有限公司 | Built-in fitting positional punch device |
| CN112024790A (en) * | 2019-11-26 | 2020-12-04 | 苏州市新艺弹簧厂 | Bending device of bent pipe spring |
| CN113931913A (en) * | 2021-09-22 | 2022-01-14 | 东风汽车底盘系统有限公司 | Positioning pin and automobile single-plate steel spring formed by same |
-
2008
- 2008-11-21 CN CNA2008101979841A patent/CN101418369A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102527833A (en) * | 2011-12-16 | 2012-07-04 | 重庆红岩方大汽车悬架有限公司 | Technique for processing lug boss by using plate spring of automobile |
| CN102527833B (en) * | 2011-12-16 | 2013-11-20 | 重庆红岩方大汽车悬架有限公司 | Technique for processing lug boss by using plate spring of automobile |
| CN106086369A (en) * | 2016-08-29 | 2016-11-09 | 河南广瑞汽车部件股份有限公司 | Prevent the method and device that plate spring seat for automobile isothermal hardening deforms |
| CN108980167A (en) * | 2018-06-30 | 2018-12-11 | 中国航空工业标准件制造有限责任公司 | Core bar of the head with tangent arc |
| CN110421371A (en) * | 2019-08-22 | 2019-11-08 | 山东双一科技股份有限公司 | Built-in fitting positional punch device |
| CN112024790A (en) * | 2019-11-26 | 2020-12-04 | 苏州市新艺弹簧厂 | Bending device of bent pipe spring |
| CN112024790B (en) * | 2019-11-26 | 2022-05-10 | 苏州市新艺弹簧厂 | Bending device of bent pipe spring |
| CN113931913A (en) * | 2021-09-22 | 2022-01-14 | 东风汽车底盘系统有限公司 | Positioning pin and automobile single-plate steel spring formed by same |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090429 |