WO2019104601A1 - 一种碳钢车框冲压成型工艺 - Google Patents

一种碳钢车框冲压成型工艺 Download PDF

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Publication number
WO2019104601A1
WO2019104601A1 PCT/CN2017/113827 CN2017113827W WO2019104601A1 WO 2019104601 A1 WO2019104601 A1 WO 2019104601A1 CN 2017113827 W CN2017113827 W CN 2017113827W WO 2019104601 A1 WO2019104601 A1 WO 2019104601A1
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WO
WIPO (PCT)
Prior art keywords
carbon steel
steel plate
boss
forming process
product
Prior art date
Application number
PCT/CN2017/113827
Other languages
English (en)
French (fr)
Inventor
胡天平
Original Assignee
惠州市惠轩达汽车贸易有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 惠州市惠轩达汽车贸易有限公司 filed Critical 惠州市惠轩达汽车贸易有限公司
Priority to PCT/CN2017/113827 priority Critical patent/WO2019104601A1/zh
Publication of WO2019104601A1 publication Critical patent/WO2019104601A1/zh

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Classifications

    • 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/02—Stamping using rigid devices or tools
    • B21D22/06—Stamping using rigid devices or tools having relatively-movable die parts

Definitions

  • the invention relates to a carbon steel frame stamping forming process, belonging to the technical field of mechanical processing.
  • the roof of the high-pressure cabin of the railway vehicle body due to its design structure, it is difficult to form by the traditional stamping forming process commonly used in China, and it is easy to cause local wrinkles and local cracking.
  • the high-pressure cabin roof imported from abroad is manufactured by special equipment of semi-steel mold, which has high manufacturing cost and long production cycle.
  • the invention overcomes the problems of local creasing, partial cracking, high manufacturing cost and long production cycle as described in the prior art, and provides a carbon steel frame stamping forming process, which can utilize existing equipment, not only the existing equipment, but also the existing equipment.
  • the workpiece quality meets the design requirements, and the manufacturing cost is greatly reduced and the production cycle is shortened.
  • the steel strip with the width corresponding to the width of the carbon steel frame to be produced is selected to be cut into the required size by a shearing machine; thereafter, a composite mold capable of simultaneously trimming and punching is designed according to the required part size, and the special molding is performed.
  • the mold is placed in a hydraulic press On the bed equipment, and heating the mold to 100 ° C; the edge of the steel plate is folded with a folding machine, the folded steel plate is placed on a special molding die, and the four sides of the steel plate are pressed by a pressure plate on a special molding die Live and reach the specified blanking force; trim the product after molding, use the R0.8 ⁇ 8° transition bevel design on the boss to make the material gradually deform and the overall compression type; Cut holes, polish, and form finished products.
  • the steel strip with the width corresponding to the width of the carbon steel frame to be produced is selected to be cut into the required size by a shearing machine; thereafter, a composite mold capable of simultaneously trimming and punching is designed according to the required part size, and the special molding is performed.
  • the mold is placed on the hydraulic press equipment, and the mold is heated to 195 ° C; the edge of the steel plate is folded with a folding machine, and the folded steel plate is placed on a special molding die, and the pressing material on the special molding die is used.
  • the plate presses the four sides of the steel plate and reaches the specified blanking force; the finished product is trimmed, and the R0.8 ⁇ 8° transition bevel is used on the boss to make the material gradually deform and the overall pressure type; The steel plate workpiece after the type is cut, polished, and formed into a finished product.
  • the steel strip with the width corresponding to the width of the carbon steel frame to be produced is selected to be cut into the required size by a shearing machine; thereafter, a composite mold capable of simultaneously trimming and punching is designed according to the required part size, and the special molding is performed.
  • the mold is placed on the hydraulic press equipment, and the mold is heated to 270 ° C; the edge of the steel plate is folded with a folding machine, and the folded steel plate is placed on a special molding die, and the pressing material on the special molding die is used.
  • the plate presses the four sides of the steel plate and reaches the specified blanking force; the finished product is trimmed, and the R0.8 ⁇ 8° transition bevel is used on the boss to make the material gradually deform and the overall pressure type; The steel plate workpiece after the type is cut, polished, and formed into a finished product.

Abstract

一种碳钢车框冲压成型工艺，其工艺步骤包括剪板机剪尺寸；设计制作复合模具，并对模具加热；板材折边；产品修边，整体压型；割孔、抛光、形成成品。该工艺中利用模具加热使得能够增加产品流动性；修边凸台具体选择R0.8×8°过渡斜面设计，从而使材料逐步变形。本工艺在多个步骤上进行有效改进，使得产品应力大大降低，凸台平整，周围不起皱，能够有效避免开裂现象。

Description

一种碳钢车框冲压成型工艺 技术领域
本发明涉及一种碳钢车框冲压成型工艺，属机械加工技术领域。
背景技术
目前在制造铁路车辆车体高压舱顶板时，因其设计结构的原因，采用我国普遍采用的传统冲压成型工艺很难成形，而且易造成局部起皱、局部开裂等现象，现在使用的均是直接从国外进口的高压舱顶板，它是采用半钢模的特殊设备制造的，制造成本高，生产周期长。
发明内容
本发明为克服上述现有技术所述的局部易起皱、局部开裂、制造成本高，生产周期长的问题，，提供一种碳钢车框冲压成型工艺，它可以利用现有的设备，不但使工件质量满足设计要求，而且大大降低了制造成本，缩短了生产周期。
为解决上述技术问题，本发明的技术方案如下：
1)将宽度与所要生产的碳钢车框宽度一致的钢带利用剪板机剪成要求的尺寸；
2)设计制作一套能同时完成修边、冲孔的复合模具，将专用成型模具放置于油压式冲床设备上，并使模具加热至100～270℃；
3)将板材的边缘用折边机折边，将已折边的板材放置在模具(1)上，用模具(1)上的压料板(2)将板材的四边压住，并达到规定的压边力；
4)对成型后的产品进行修边，凸台上用R0.8×8°过渡斜面设计，让材料逐步变形，整体压型；
5)将压型后的工件(3)进行割孔、抛光、形成成品。
在上述步骤3中，只对板材上距离成型后形成的凸台较近的边进行折边。
与现有技术相比，本发明技术方案的有益效果是：
(1)对模具进行前期加热，增大金属流动性，降低产品角度应力，避免应力开裂。
(2)由于采用了先局部折边后压边，先整体压型后割孔的工艺，使得压型后工件上形成的凸台平整，周围不起皱，对凸模的斜面设计也同样能够避免产生开裂的现象。
具体实施方式
实施例1
选择宽度与所要生产的碳钢车框宽度一致的钢带利用剪板机剪成要求的尺寸；此后根据所需零件尺寸设计制作一套能同时完成修边、冲孔的复合模具，将专用成型模具放置于油压式冲 床设备上，并使模具加热至100℃；将钢板的边缘用折边机折边，将已折边的钢板放置在专用成型模具上，用专用成型模具上的压料板将钢板的四边压住，并达到规定的压边力；对成型后的产品进行修边，凸台上用R0.8×8°过渡斜面设计，让材料逐步变形，整体压型；将压型后的钢板工件进行割孔、抛光、形成成品。
实施例2
选择宽度与所要生产的碳钢车框宽度一致的钢带利用剪板机剪成要求的尺寸；此后根据所需零件尺寸设计制作一套能同时完成修边、冲孔的复合模具，将专用成型模具放置于油压式冲床设备上，并使模具加热至195℃；将钢板的边缘用折边机折边，将已折边的钢板放置在专用成型模具上，用专用成型模具上的压料板将钢板的四边压住，并达到规定的压边力；对成型后的产品进行修边，凸台上用R0.8×8°过渡斜面设计，让材料逐步变形，整体压型；将压型后的钢板工件进行割孔、抛光、形成成品。
实施例3
选择宽度与所要生产的碳钢车框宽度一致的钢带利用剪板机剪成要求的尺寸；此后根据所需零件尺寸设计制作一套能同时完成修边、冲孔的复合模具，将专用成型模具放置于油压式冲床设备上，并使模具加热至270℃；将钢板的边缘用折边机折边，将已折边的钢板放置在专用成型模具上，用专用成型模具上的压料板将钢板的四边压住，并达到规定的压边力；对成型后的产品进行修边，凸台上用R0.8×8°过渡斜面设计，让材料逐步变形，整体压型；将压型后的钢板工件进行割孔、抛光、形成成品。
显然，本发明的上述实施例仅仅是为清楚地说明本发明所作的举例，而并非是对本发明的实施方式的限定。对于所属领域的普通技术人员来说，在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明权利要求的保护范围之内。

Claims (2)

  1. 一种碳钢车框冲压成型工艺，其特征在于：该工艺包括以下步骤，
    1)将宽度与所要生产的碳钢车框宽度一致的钢带利用剪板机剪成要求的尺寸；
    2)设计制作一套能同时完成修边、冲孔的复合模具，将专用成型模具放置于油压式冲床设备上，并使模具加热至100～270℃；
    3)将钢板的边缘用折边机折边，将已折边的钢板放置在专用成型模具上，用专用成型模具上的压料板将钢板的四边压住，并达到规定的压边力；
    4)对成型后的产品进行修边，凸台上用R0.8×8°过渡斜面设计，让材料逐步变形，整体压型；
    5)将压型后的钢板工件进行割孔、抛光、形成成品，让材料逐步变形。
  2. 根据权利要求1所述的一种碳钢车框冲压成型工艺，其特征在于：在上述步骤3中，只对板材上距离成型后形成的凸台较近的边进行折边。
PCT/CN2017/113827 2017-11-30 2017-11-30 一种碳钢车框冲压成型工艺 WO2019104601A1 (zh)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101428323A (zh) * 2007-11-05 2009-05-13 南车四方机车车辆股份有限公司 不锈钢车体顶板冲压成型工艺
CN101439382A (zh) * 2008-12-30 2009-05-27 山东大学 一种超高强度钢热冲压成型工艺及成型模具
CN102527803A (zh) * 2011-12-28 2012-07-04 吉林大学 一种高强钢局部加热成形方法
CN102814378A (zh) * 2012-09-07 2012-12-12 江苏申模数字化制造技术有限公司 汽车螺母板类零件的温差成形装置及成形方法
CN202910140U (zh) * 2012-09-07 2013-05-01 江苏申模数字化制造技术有限公司 汽车螺母板类零件的温差成形装置
CN106378374A (zh) * 2016-12-14 2017-02-08 王晓芳 一种钢制板材的冲压工艺
EP3135394A1 (en) * 2014-04-23 2017-03-01 JFE Steel Corporation Method for manufacturing hot press forming part and hot press forming part

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101428323A (zh) * 2007-11-05 2009-05-13 南车四方机车车辆股份有限公司 不锈钢车体顶板冲压成型工艺
CN101439382A (zh) * 2008-12-30 2009-05-27 山东大学 一种超高强度钢热冲压成型工艺及成型模具
CN102527803A (zh) * 2011-12-28 2012-07-04 吉林大学 一种高强钢局部加热成形方法
CN102814378A (zh) * 2012-09-07 2012-12-12 江苏申模数字化制造技术有限公司 汽车螺母板类零件的温差成形装置及成形方法
CN202910140U (zh) * 2012-09-07 2013-05-01 江苏申模数字化制造技术有限公司 汽车螺母板类零件的温差成形装置
EP3135394A1 (en) * 2014-04-23 2017-03-01 JFE Steel Corporation Method for manufacturing hot press forming part and hot press forming part
CN106378374A (zh) * 2016-12-14 2017-02-08 王晓芳 一种钢制板材的冲压工艺

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