CN102689149A - Continuous press forging precise forming process of automobile retaining frame part - Google Patents
Continuous press forging precise forming process of automobile retaining frame part Download PDFInfo
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- CN102689149A CN102689149A CN2012101954751A CN201210195475A CN102689149A CN 102689149 A CN102689149 A CN 102689149A CN 2012101954751 A CN2012101954751 A CN 2012101954751A CN 201210195475 A CN201210195475 A CN 201210195475A CN 102689149 A CN102689149 A CN 102689149A
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Abstract
The invention provides a continuous stamp forging precise forming process of an automobile retaining frame part and belongs to the field of metal pressure processing. The process adopts the process route that a forming process method of combining precise stamping and cold forging is adopted, an annealed steel plate with the thickness a little greater than the thickness of a part flange part is selected as raw materials, after uncoiling and flattening work procedures, the steel plate is clamped by a feeding roller and is conveyed into a multi-station stamp forging forming mold, workpieces are formed in four steps, the four steps respectively comprise the first work step of inner hole blanking, the second work step of flattening/bulge extrusion, the third work step of hole extrusion and bulge forming and the fourth work step of bulge hole punching/inner hole punching/blanking, and the workpieces are obtained. The parts obtained by adopting the process do not need the subsequent machining at all. Compared with the traditional forging process, the continuous stamp forging precise forming process has the advantages that the precision of the forged piece is improved, the efficient and continuous production of retaining frame part products is realized, and the production efficiency is greatly improved.
Description
Technical field
The present invention relates to a kind of accurate forming method, especially a kind of continuous impact forging precise forming process of automobile retainer part belongs to the stress metal manufacture field.
Background technology
At present in world's stress metal processing industry; Production efficiency has been the central factor of market competitiveness of enterprises; In order to enhance productivity; The mode of production of multistation progressive forming is used widely, and the manufacturing of field parts such as more and more automobiles, space flight and aviation, machinery adopts automation to forge and press the mode of production continuously, and production efficiency is greatly improved.It shown in the accompanying drawing 1 the retainer part that a kind of automobile industry is widely applied; Part integral body is the annulus flange-like; The upper and lower end face flatness of flange is had relatively high expectations; And three radial lobes that are uniformly distributed with are arranged in the annulus outside, and corresponding is evenly equipped with three boss at thickness direction, and each boss place has individual centre bore accordingly.According to the rule and the practice of Metal Forming, the boss on the annular flange can influence the inside/outside diameter size of annular element in forming process, influence the part forming precision.At present; The method of producing this type of part is to adopt bar through blanking, heating, jumping-up, perforation, reaming, rolling ring operation, processes the annulus blank, and then adds the thermal recovery contour forging technique and forge radial lobes and boss; Boring boss place centre bore is after the Milling Machine manufacturing procedure is processed finished product.The advantage of the method is to save raw material, and shortcoming is that manufacturing process is many, and production efficiency is low, is difficult for realizing automated production.
Summary of the invention
The objective of the invention is to overcome the deficiency of existing manufacturing approach, a kind of continuous plate impact forging accurate forming method that can realize automated production in enormous quantities is provided, the retainer part of formed thereby does not need follow-up machined basically, effectively enhances productivity.
Technical scheme of the present invention is: the forming process that adopts precision stamping to combine with cold forging; Select for use the annealed state steel plate that is slightly thicker than part flange section thickness as raw material; After uncoiling, flat operation; Steel plate is sent into multistation press forging and forming mould through the feeding roller clamping; Divided for four steps came Forming Workpiece, be respectively first work step: stamping-out endoporus → second work step: flatten/extrude convexity → the 3rd work step: squeeze hole and the boss that is shaped → the 4th work step:, obtain final workpiece towards boss hole/stamping-out endoporus/blanking.Wherein, First work step: stamping-out endoporus; Being to adopt Sheet Metal Forming Technology, going out the through hole that is slightly less than final part diameter of bore in the part center, this through hole can be ironed at second work step/play the effect that material is radially shunted when extruding convexity; Make because of attenuation produces the mobile inside bore portion of material and assemble, can reduce band material peripheral distortion; Second work step: flatten/extrude convexity; Be to adopt forging, utilize the part to gather the material method when plate is flattened out and forge convexity that the geomery that plate is flattened is slightly larger than final part projection size; Thickness after the flattening is consistent with part thickness; This work step can guarantee the requirement of the top and bottom flatness that part is higher, makes the top and bottom flatness of forging need not machined and can satisfy final part requirement, simultaneously; Utilize the local purpose that convexity that the material method forges not only can realize reducing the 3rd work step deflection of gathering, can also the location be provided for the shaping of the 3rd work step; The 3rd work step: squeezing the hole and the boss that is shaped, is to adopt local forging, utilizes the method for extruding counterbore, material is flowed to the short transverse of boss be full of boss, and boss is forged.When this work step is shaped, utilize mould to push down the ring plain after second step flattened, only make the bossing of second work step carry out plastic deformation, the thickness deviation that can not influence part changes; The 4th work step: towards boss hole/stamping-out endoporus/blanking, be to adopt fine blanking technology that boss hole is dashed to pass through/stamping-out endoporus/blanking, fine blanking technology can guarantee part endoporus and appearance and size precision, obtains final part.
Adopt the technique scheme frame part that is maintained not need follow-up machined basically, only need remove the burrs that on boss, form individually.Practical situations proves, with respect to conventional forging process, the continuous impact forging precise forming process that adopts precision stamping to combine with cold forging has improved the precision of forging, has realized efficient, the production continuously of retainer part product, has improved production efficiency greatly.
Description of drawings
Accompanying drawing is a sketch map of the present invention.
Accompanying drawing 1 is a kind of automobile retainer part, and wherein, a is a front view, and b is a right view.
Accompanying drawing 2 is the work step figure of the continuous impact forging precise forming process of the present invention, and wherein, a is first work step: stamping-out endoporus, b are second work step: ironed/as to extrude convexity, c is the 3rd work step: forge boss, d is the 4th work step: dash and pass through boss hole/stamping-out endoporus/blanking.
The specific embodiment
Further specify embodiments of the invention below in conjunction with accompanying drawing and specific embodiment.
Shown in accompanying drawing 2, a kind of step of continuous impact forging accurate forming method of automobile retainer part is: a. first work step: stamping-out endoporus → b. second work step: ironed/as to extrude convexity → c. the 3rd work step: as to forge boss → d. the 4th work step: dash and pass through boss hole/stamping-out endoporus/blanking.
First work step: stamping-out endoporus.Feeding roller will be with material to deliver to first work step, and press ram is descending, goes out endoporus.This hole can flatten at second work step/play the effect that material is radially shunted when extruding convexity, and make because of attenuation produces the material inside bore portion that flows and assemble, can reduce band material peripheral distortion.
Second work step: flatten/extrude convexity.Feeding roller will be with material to go up completed first work step and deliver to second work step, and press ram is descending, adopt forging, and the shaped somewhat that plate is flattened out is greater than the part projection size, and the thickness after the flattening is consistent with part thickness.This work step can guarantee the requirement of the top and bottom flatness that part is higher; Make the top and bottom flatness of forging need not machined and can satisfy final part requirement; Simultaneously; Utilize the part to gather the material method and when flattening, extrude convexity, this convexity not only can realize reducing the purpose of the 3rd work step deflection, can also the location be provided for the shaping of the 3rd work step.
The 3rd work step: squeeze the hole and the boss that is shaped.Feeding roller will be with material to go up completed second work step and deliver to the 3rd work step, and press ram is descending, adopts local forging that boss is forged.The method of counterbore is extruded in utilization; Material is flowed to the short transverse of boss be full of boss; This work step can utilize mould to push down the ring plain after second step flattened when being shaped, only make the bossing of second work step carry out plastic deformation, and the thickness deviation that can not influence part changes.
The 4th work step: towards boss hole/stamping-out endoporus/blanking.Feeding roller will be with material to go up completed the 3rd work step and deliver to the 4th work step; Press ram is descending; Stamping-out endoporus, blanking when dashing boss hole thoroughly; The waste material magnetic force conveyer belt of landing to the equipment below from mould below of the waste material under the stamping-out also is transported to ash can, and the finished product forging ejects from the mould top and slides on the finished product conveyer belt and be transported to the finished product hopper.This work step adopts fine blanking technology to guarantee part endoporus and appearance and size precision, obtains qualified parts.
Claims (5)
1. the continuous impact forging precise forming process of an automobile retainer part; It is characterized in that: the forming process that adopts precision stamping to combine with cold forging; Divided for four steps came Forming Workpiece; Be respectively first work step: stamping-out endoporus → second work step: flatten/extrude convexity → the 3rd work step: squeeze hole and the boss that is shaped → the 4th work step:, obtain final workpiece towards boss hole/stamping-out endoporus/blanking.
2. the continuous impact forging precise forming process of a kind of automobile retainer part according to claim 1; It is characterized in that: described first work step: stamping-out endoporus; Be to adopt Sheet Metal Forming Technology, go out the through hole that is slightly less than final part diameter of bore in the part center.
3. the continuous impact forging precise forming process of a kind of automobile retainer part according to claim 1; It is characterized in that: described second work step: flatten/extrude convexity; Be to adopt forging; Utilize the part to gather the material method when plate is flattened out and forge convexity, the geomery of flattening is slightly larger than final part projection size, and the thickness after the flattening is consistent with part thickness.
4. the continuous impact forging precise forming process of a kind of automobile retainer part according to claim 1; It is characterized in that: described the 3rd work step: squeeze the hole and the boss that is shaped; Be to adopt local forging; Utilize the method for extruding counterbore, material is flowed to the short transverse of boss be full of boss, boss is forged.
5. the continuous impact forging precise forming process of a kind of automobile retainer part according to claim 1; It is characterized in that: described the 4th work step: towards boss hole/stamping-out endoporus/blanking; Be to adopt fine blanking technology that boss hole is dashed to pass through/stamping-out endoporus/blanking, obtain final part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012101954751A CN102689149A (en) | 2012-06-14 | 2012-06-14 | Continuous press forging precise forming process of automobile retaining frame part |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101954751A CN102689149A (en) | 2012-06-14 | 2012-06-14 | Continuous press forging precise forming process of automobile retaining frame part |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105921948A (en) * | 2016-05-04 | 2016-09-07 | 南京工程学院 | Efficient and precise forming method of large and medium hollow disc-shaped forging with complex structure |
| CN108080897A (en) * | 2017-12-16 | 2018-05-29 | 武汉华夏精冲技术有限公司 | A kind of low-intensity Thick Plate Fine stamping manufacturing process with counterbore and elongated blind hole |
| CN108994205A (en) * | 2018-09-28 | 2018-12-14 | 唐山市鑫源制锹有限责任公司 | Technique based on continuous cold-punching mould production steel shovel |
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| CN1807002A (en) * | 2005-01-20 | 2006-07-26 | 厦门恒耀金属有限公司 | Process for forming thin shim by multi-work station cold headers and wire rod |
| CN101259509A (en) * | 2008-04-23 | 2008-09-10 | 武汉理工大学 | Forming technique for sheet metal stamping cold forging and fine blanking composite boss part |
| CN101860134A (en) * | 2010-05-18 | 2010-10-13 | 江苏通达动力科技股份有限公司 | Stamping process for stator and rotor of wind power generator |
| CN102424059A (en) * | 2011-12-07 | 2012-04-25 | 青岛四方车辆研究所有限公司 | Hand wheel of hand brake of railway wagon and processing technology thereof |
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2012
- 2012-06-14 CN CN2012101954751A patent/CN102689149A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1807002A (en) * | 2005-01-20 | 2006-07-26 | 厦门恒耀金属有限公司 | Process for forming thin shim by multi-work station cold headers and wire rod |
| CN101259509A (en) * | 2008-04-23 | 2008-09-10 | 武汉理工大学 | Forming technique for sheet metal stamping cold forging and fine blanking composite boss part |
| CN101860134A (en) * | 2010-05-18 | 2010-10-13 | 江苏通达动力科技股份有限公司 | Stamping process for stator and rotor of wind power generator |
| CN102424059A (en) * | 2011-12-07 | 2012-04-25 | 青岛四方车辆研究所有限公司 | Hand wheel of hand brake of railway wagon and processing technology thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105921948A (en) * | 2016-05-04 | 2016-09-07 | 南京工程学院 | Efficient and precise forming method of large and medium hollow disc-shaped forging with complex structure |
| CN108080897A (en) * | 2017-12-16 | 2018-05-29 | 武汉华夏精冲技术有限公司 | A kind of low-intensity Thick Plate Fine stamping manufacturing process with counterbore and elongated blind hole |
| CN108080897B (en) * | 2017-12-16 | 2019-11-01 | 武汉华夏精冲技术有限公司 | A kind of low-intensity Thick Plate Fine stamping manufacturing process with counterbore and elongated blind hole |
| CN108994205A (en) * | 2018-09-28 | 2018-12-14 | 唐山市鑫源制锹有限责任公司 | Technique based on continuous cold-punching mould production steel shovel |
| CN108994205B (en) * | 2018-09-28 | 2020-01-31 | 唐山泰民科技有限公司 | Process for manufacturing steel spade based on continuous cold punching die |
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Application publication date: 20120926 |