CN208276023U - 一种镁合金厚薄管抽管机构 - Google Patents
一种镁合金厚薄管抽管机构 Download PDFInfo
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- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
- B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles
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- B21C5/00—Pointing; Push-pointing
- B21C5/003—Pointing; Push-pointing of hollow material, e.g. tube
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- B21D53/00—Making other particular articles
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- H05B6/101—Induction heating apparatus, other than furnaces, for specific applications for local heating of metal pieces
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Abstract
本实用新型公开一种镁合金厚薄管抽管机构,包括抽管模具、抽管芯杆以及液压执行元件,抽管模具内部设有模具加热部件,用于对进入抽管模具内的镁合金管料进行加热。还可包括管料加热部件,用于对进入抽管模具前的镁合金管料进行预加热。工作时,先通过模具加热部件将抽管模具加热到一定的抽管工艺温度,然后由液压执行元件推动抽管芯杆带动镁合金管料先通过管料加热部件进行快速预热,然后进入抽管模具完成抽管工艺。本实用新型的镁合金厚薄管抽管机构在现有的铝合金抽管机构中增加模具加热部件,使得镁合金厚薄管在加工成型过程中一直处于稳定的受热状态,从而有效改善了镁合金的塑性,解决镁合金厚薄管抽管变形开裂、无法加工成型问题。
Description
技术领域
本实用新型涉及一种厚薄管抽管设备,特别涉及一种镁合金厚薄管抽管机构。
背景技术
镁合金具有重量轻、比强度和比模量高、阻尼减震性能好、资源丰富、易于回收循环使用等优点,在航天航空、汽车、轨道交通等运输行业得到广泛应用,并得到运动器材、自行车行业的青睐,一些企业用镁合金设计制造自行车车架及其它结构部件。然而,由于自行车车架是自行车最主要的安全结构件,在使用过程中要承受复杂的冲击疲劳,镁合金自行车车架管料焊接热影响区难以承受高的疲劳,在焊接热影响区附近会发生疲劳断裂。因此,采用镁合金管料焊接自行车车架,需要采用焊接部位管料壁厚略厚、而管料长度中间区域壁厚较薄的非等壁厚的厚薄管,如图1,以达到增加焊接部位强度,同时降低管料中间区域的刚性,实现车架受力均匀、降低车架焊接部位疲劳断裂的几率。
高质量的铝合金车架为了减轻重量并同时满足疲劳安全性能,也要进行对铝合金管料进行厚薄管抽管加工。由于铝合金室温塑性良好,室温下抽管变形加工很容易实现;而镁合金为密排六方晶体结构、室温塑性差,采用铝合金抽管设备和工艺不能实现镁合金厚薄管的变形加工,在抽管变形过程中易发生变形开裂,无法制备镁合金厚薄管。目前,还没有专用的镁合金抽管设备。
实用新型内容
实用新型目的:针对现有的常规铝合金抽管设备无法用于镁合金抽管加工的问题,本实用新型提供一种镁合金厚薄管抽管机构。
技术方案:本实用新型所述的一种镁合金厚薄管抽管机构,包括抽管模具、抽管芯杆以及液压执行元件,抽管模具和抽管芯杆用于加工镁合金管料、使其成型为镁合金厚薄管,液压执行元件用于推动镁合金管料及抽管芯杆往复运动、进入或退出抽管模具;其中,抽管模具内部设有模具加热部件,用于对进入抽管模具内的镁合金管料进行加热,使镁合金管料在加工成型过程中处于受热状态。
通过设置模具加热部件,可将抽管模具加热至一定的抽管温度,使得镁合金管料在在抽管时具备良好的塑性,防止其抽管过程中发生变形或开裂现象。
模具加热部件优选为电阻加热器。
较优的,该镁合金厚薄管抽管机构还可包括管料加热部件,用于对进入抽管模具前的镁合金管料进行快速预加热,避免进入抽管模具的镁合金管料升温速度太慢、影响抽管。该管料加热部件优选采用电磁感应加热线圈,其可与高频感应加热电源连接,由高频感应加热电源为其提供电磁感应加热电流。
进一步的,本实用新型的镁合金厚薄管抽管机构还包括挡板,挡板上设有可供抽管芯杆退出的通孔;在抽管芯杆回程过程中,可通过挡板将镁合金管料挡住,同时抽管芯杆退出,完成抽管。
镁合金厚薄管抽管机构各部件中,抽管模具和管料加热部件可同轴设置。
工作时,先由模具加热部件将抽管模具加热到镁合金抽管工艺温度,然后由液压执行元件推动抽管芯杆带动镁合金管料先通过管料加热部件预热,然后进入抽管模具进行抽管。
有益效果:与现有技术相比,本实用新型的优点在于:本实用新型的镁合金厚薄管抽管机构通过在现有的铝合金抽管设备中增加模具加热部件,使得镁合金厚薄管在加工成型过程中处于受热状态,从而可有效改善镁合金的塑性,解决镁合金厚薄管抽管变形开裂、无法加工成型的问题;通过增加管料加热部件,可在抽管前对镁合金管料快速预加热,使进入抽管模具的镁合金管料能快速稳定的升温,提高抽管质量和抽管效率。
附图说明
图1为镁合金厚薄管的结构示意图;
图2为本实用新型的镁合金厚薄管抽管机构的结构示意图;
图3为成型双抽管过程中,对镁合金管料进行缩头时其端头结构变化过程图;
图4为成型双抽管过程中,采用第一模芯杆抽管时镁合金管料的抽管过程图;
图5为成型双抽管过程中,采用第二模芯杆抽管时镁合金管料的抽管过程图。
具体实施方式
下面结合附图对本实用新型的技术方案作进一步说明。
如图2,本实用新型的一种镁合金厚薄管抽管机构,包括基座8、抽管模具1、抽管芯杆和液压执行元件6。
抽管模具1与抽管芯杆配合,抽管芯杆置入镁合金管料7中,利用抽管芯杆的外形尺寸与抽管模具1的内孔尺寸可将等壁厚的镁合金管料7加工成型镁合金厚薄管。其中,抽管模具1固定在基座8上,其内部设有模具加热部件2,如电阻加热器,可以根据工艺需要将抽管模具1加热到一定的抽管工艺温度,当镁合金管料7进入抽管模具1时,可在受热状态下完成抽管,有效改善镁合金的塑性,从而可解决镁合金厚薄管抽管变形开裂、无法加工成型的问题。镁合金厚薄管的结构不同,采用的抽管芯杆的尺寸和数量也不同,比如图1的两侧厚、中间薄的镁合金厚薄管9,其抽管过程需要两根不同尺寸的抽管芯杆,包括第一模芯杆41和第二模芯杆42。
液压执行元件6固定在基座8上,其可为液压缸;液压执行元件6与液压控制系统连接,液压控制系统为液压执行元件6提供动力,使液压执行元件6能够推动抽管芯杆带动镁合金管料7往复运动,进入或退出抽管模具1。
本实用新型的镁合金厚薄管抽管机构还可包括管料加热部件3,管料加热部件3位于抽管模具1前端,可在镁合金管料7进入抽管模具1前对镁合金管料7进行快速的预加热,通过快速预加热可避免进入抽管模具的镁合金管料升温速度太慢、影响抽管。管料加热部件3可为电磁感应加热线圈,其与高频感应加热电源连接,由高频感应加热电源提供电磁感应加热线圈的加热电流。
镁合金厚薄管抽管机构的基座8上还固定有挡板5,挡板5上设有通孔,其孔径略大于抽管芯杆的外径,小于镁合金厚薄管的外径,当抽管芯杆带动镁合金管料回程时,可使抽管芯杆退出,同时阻挡镁合金管料,使两者分离,完成抽管。
工作时,先通过模具加热部件2将抽管模具1加热到一定的抽管工艺温度,然后由液压执行元件6推动抽管芯杆带动镁合金管料7先通过管料加热部件3进行快速预热,然后进入抽管模具完成抽管工艺。
以成型加工图1的镁合金厚薄管9为例,对本实用新型的镁合金厚薄管抽管机构的工作过程进行说明。本例中,镁合金厚薄管9为双抽管,需通过两根不同尺寸的抽管芯杆来完成抽管,分别为第一模芯杆41和第二模芯杆42;同时,本例中,模具加热部件2采用电阻加热器,管料加热部件3采用感应加热线圈,液压执行元件6采用液压缸。
采用本实用新型的镁合金厚薄管抽管机构抽管的工作过程如下:
(1)缩头:如图3(a),将镁合金管料7插入加热的圆锥形内孔模具10中,模具温度为200~400℃,使镁合金管料7端头形成锥形,如图3(b);
(2)抽管:
A、第一模:如图4,将缩头过的镁合金管料7套入外形尺寸为厚薄管内孔尺寸的第一模芯杆41中,将第一模芯杆41顶住镁合金管料7缩头部位,启动液压缸推动镁合金管料7穿过感应加热线圈并穿过抽管模具1内孔,由第一模芯杆41外形尺寸和抽管模具1内孔尺寸共同形成镁合金厚薄管,在抽管过程中,抽管模具1由电阻加热器加热保持在200-400℃温度范围内,保证镁合金抽管不发生破裂;在第一模芯杆41回程过程中,镁合金管料7会被挡板5挡住,此时第一模芯杆41退出,抽管第一模完成。
B、第二模:由于第一模芯杆41中间段直径大于镁合金厚薄管尾端内孔尺寸,在退第一模芯杆41过程中,第一模芯杆41会将尾端的镁合金管直径撑大。如图5,利用尺寸略小于镁合金内孔尺寸的第二模芯杆42和同样的外模对镁合金厚薄管7进行二次抽管,将尾端凸起的部位压平,得到外径一致,内径不同的镁合金厚薄管。
Claims (6)
1.一种镁合金厚薄管抽管机构,其特征在于,包括抽管模具、抽管芯杆和液压执行元件,所述抽管模具内部设有模具加热部件,用于对进入抽管模具内的镁合金管料进行加热。
2.根据权利要求1所述的镁合金厚薄管抽管机构,其特征在于,所述模具加热部件为电阻加热器。
3.根据权利要求1所述的镁合金厚薄管抽管机构,其特征在于,还包括管料加热部件,用于对进入抽管模具前的镁合金管料进行快速加热。
4.根据权利要求3所述的镁合金厚薄管抽管机构,其特征在于,所述管料加热部件为电磁感应加热线圈,该电磁感应加热线圈与高频感应加热电源连接。
5.根据权利要求3所述的镁合金厚薄管抽管机构,其特征在于,所述管料加热部件与抽管模具同轴设置。
6.根据权利要求1所述的镁合金厚薄管抽管机构,其特征在于,还包括挡板,挡板上设有可供抽管芯杆退出的通孔。
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US17/055,849 US20210220898A1 (en) | 2018-05-15 | 2019-05-16 | Magnesium alloy butted tube drawing mechanism |
PCT/IB2019/054080 WO2019220398A2 (zh) | 2018-05-15 | 2019-05-16 | 一种镁合金厚薄管抽管机构 |
EP19804344.0A EP3848132A2 (en) | 2018-05-15 | 2019-05-16 | Magnesium alloy butted tube drawing mechanism |
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WO2019220398A3 (zh) * | 2018-05-15 | 2021-10-07 | 裕廊百利鎂合金材料科技有限公司 | 一种镁合金厚薄管抽管机构 |
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CN104070078A (zh) * | 2013-03-29 | 2014-10-01 | 南京理工大学 | 镁合金管材超高压静液挤压成型工艺及其挤压模具 |
CN103240292A (zh) * | 2013-04-12 | 2013-08-14 | 河南理工大学 | 一种镁合金薄壁管材的生产方法及装置 |
CN103331582B (zh) * | 2013-07-04 | 2015-11-25 | 扬州大学 | 一种制备金属薄壁微管的方法 |
CN203565522U (zh) * | 2013-12-04 | 2014-04-30 | 天津弘佳钢管有限公司 | 一种拔管装置 |
CN103962403B (zh) * | 2014-05-02 | 2016-09-28 | 内蒙古北方重工业集团有限公司 | 大口径管材挤拔减壁方法 |
CN204276554U (zh) * | 2014-12-10 | 2015-04-22 | 常州市腾田液压机械有限公司 | 管材热缩或热扩成型机组 |
KR101663598B1 (ko) * | 2015-02-23 | 2016-10-10 | (주)유창산공 | 가변두께 스틸튜브 제조장치 |
CN108015113A (zh) * | 2018-01-23 | 2018-05-11 | 北京大学深圳研究院 | 一种镁合金精密管材控温拉拔工艺及其控温拉拔机构 |
CN208276023U (zh) * | 2018-05-15 | 2018-12-25 | 句容百利镁合金材料科技有限公司 | 一种镁合金厚薄管抽管机构 |
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2018
- 2018-05-15 CN CN201820726340.6U patent/CN208276023U/zh active Active
-
2019
- 2019-05-16 EP EP19804344.0A patent/EP3848132A2/en not_active Withdrawn
- 2019-05-16 US US17/055,849 patent/US20210220898A1/en not_active Abandoned
- 2019-05-16 WO PCT/IB2019/054080 patent/WO2019220398A2/zh unknown
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2019220398A3 (zh) * | 2018-05-15 | 2021-10-07 | 裕廊百利鎂合金材料科技有限公司 | 一种镁合金厚薄管抽管机构 |
CN109967978A (zh) * | 2019-04-17 | 2019-07-05 | 李祝东 | 一种管制一体喇叭套前叉立管的制作工艺及结构 |
CN111085583A (zh) * | 2020-01-06 | 2020-05-01 | 惠州市立洋五金制品有限公司 | 金属管材端面向内折边加工方法及其带折边的管材 |
CN111085583B (zh) * | 2020-01-06 | 2024-05-17 | 惠州市富斯特科技有限公司 | 金属管材端面向内折边加工方法及其带折边的管材 |
Also Published As
Publication number | Publication date |
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EP3848132A2 (en) | 2021-07-14 |
WO2019220398A2 (zh) | 2019-11-21 |
WO2019220398A3 (zh) | 2021-10-07 |
US20210220898A1 (en) | 2021-07-22 |
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