CN112496035B - 一种金属极板辊压专用机辊压成形的方法 - Google Patents

一种金属极板辊压专用机辊压成形的方法 Download PDF

Info

Publication number
CN112496035B
CN112496035B CN202011228104.XA CN202011228104A CN112496035B CN 112496035 B CN112496035 B CN 112496035B CN 202011228104 A CN202011228104 A CN 202011228104A CN 112496035 B CN112496035 B CN 112496035B
Authority
CN
China
Prior art keywords
rotating block
electric cylinder
servo electric
pressing roller
driven
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
CN202011228104.XA
Other languages
English (en)
Other versions
CN112496035A (zh
Inventor
赵富强
李康
牛志刚
王栋
丁小凤
杨森
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Taiyuan University of Technology
Taiyuan University of Science and Technology
Original Assignee
Taiyuan University of Technology
Taiyuan University of Science and Technology
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 Taiyuan University of Technology, Taiyuan University of Science and Technology filed Critical Taiyuan University of Technology
Priority to CN202011228104.XA priority Critical patent/CN112496035B/zh
Publication of CN112496035A publication Critical patent/CN112496035A/zh
Application granted granted Critical
Publication of CN112496035B publication Critical patent/CN112496035B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • B21B13/023—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally the axis of the rolls being other than perpendicular to the direction of movement of the product, e.g. cross-rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/07—Adaptation of roll neck bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B31/22—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
    • B21B2001/386—Plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • B21B2013/021—Twin mills
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Fuel Cell (AREA)

Abstract

一种金属极板辊压专用机辊压成形的方法，属于燃料电池极板生产技术领域，金属极板辊压专用机的结构是外牌坊为一方形体，中间有一圆形通孔，在圆形通孔内安装有上、下压辊，分别通过上、下轴承座安装在上、下旋转块的凹槽内，用于径向微调的结构是伺服电动缸通过连杆与支座环铰接，带动上旋转块转动，实现对上压辊的微调，特征是在Y方向上，上、下压辊的中心线与上、下旋转块的中心线设有10~20mm的偏心距，伺服电动缸驱动上旋转块转动角度的范围是不大于11.31°。优点是实现了高精度压下，确保极板成形精确，极板的应用性能得到改善。

Description

一种金属极板辊压专用机辊压成形的方法
技术领域
一种金属极板辊压专用机辊压成形的方法，属于燃料电池极板生产技术领域。
背景技术
现有技术加工金属极板流道的工艺方法中存在的缺点是生产的极板形状不够精确，应用性能不够好。
发明内容
本发明提供一种金属极板辊压专用机辊压成形的方法，可有效地克服现有技术存在的缺点。
本发明采用的技术方案是：首先介绍一下金属极板辊压专用机的结构：如图1所示，外牌坊7为一方形体，中间有一圆形通孔，在圆形通孔内安装有上、下压辊12、10，分别通过上、下轴承座13、9安装在上、下旋转块4、8的凹槽内;用于径向微调的结构是：伺服电动缸1通过连杆2与支座环3铰接，带动上旋转块4转动，实现对上压辊12的微调，其特征是：在Y方向上，上、下压辊12、10的中心线与上、下旋转块4、8的中心线设有偏心距OG=10~20mm，伺服电动缸1驱动上旋转块4转动角度∠AOC的范围是不大于11.31°。
本发明优点及积极效果是：实现了高精度压下，确保极板成形精确，极板的应用性能得到改善。
附图说明
图1为金属极板辊压专用机及辊压成形的方法示意图；
图2为图2中三角形ABC处放大图；
图3为图2中三角形DEF处放大图；
图4为图2中偏心距OG处放大图；
图1-4中：1-伺服电动缸，2-连杆，3-支座环，4-上旋转块，5-弧形板，6-螺栓，7-外牌坊，8-下旋转块，9-下轴承座，10-下压辊，11-上压辊转动轨迹线，12-上压辊，13-上轴承座。
具体实施方式
如图1、2、3、4所示，下面对本发明的特征是如何确定的，作进一步简介： 所述伺服电动缸1控制支座环3的中心A运动轨迹为以O为圆心的弧线AC，且OA=600mm，上、下旋转块4、8的外轮廓线是以O为圆心、以OH为半径的圆，且OH=400mm，当偏心距OG取值为20mm，伺服电动缸1驱动上旋转块4转动角度∠AOC达到最大值11.31°时，上压辊12沿Y轴的竖向压下量为DE，沿X轴的横向移动距离为EO1，EO1=OG=20mm；上压辊中心运动轨迹11以O为圆心，且弦DO1对应圆心角为∠DOO1，支座环3的中心A运动轨迹弧线AC对应连杆2的移动量AC,其圆心角为∠AOC，∠DOO1与∠AOC为同一角，则∠BAC与∠EDO1为内错角，所以∠BAC=∠EDO1，△ABC与△DEO1为相似三角形，利用相似三角形原理，在△ABC 内X轴方向上的线段BC与上压辊12的横向移动距离EO1有比值n= BC/EO1=5.8835，Y方向上的线段AB与上压辊12的压下量DE的比值AB/DE=n；现假设伺服电动缸1驱动的连杆2的移动量AC=1mm，利用三角形勾股定理，则Y方向上线段AB<1*sin(∠ACB)=0.0985mm，上压辊12的压下量DE= AB/n<(sin(∠ACB)* EO1)/BC=0.01675mm；所以可知，当伺服电动缸1驱动的连杆2的移动量AC为1mm时，上压辊12的压下量DE小于(sin(∠ACB)* EO1)/BC=0.01675mm，比值m=AC/DE＞BC/(sin(∠ACB)* EO1)=59.7078，反之，若要控制上压辊12的压下量DE为1μm，则伺服电动缸1驱动的连杆移动量AC＞DE* BC/(sin(∠ACB)* EO1)≈0.06mm；因此，只要控制伺服电动缸1精度在0.06mm以内就能满足1μm的压下精度；伺服电动缸重复定位精度最高可达±0.01mm，所以这种辊压成形的方法能满足高精度压下。
除本发明所描述的如图1中的金属极板辊压专用机的结构外，下旋转块8也可由另一伺服电动缸驱动，实现左右转动，从而带动下压辊10径向移动。

Claims (1)

1.一种金属极板辊压专用机辊压成形的方法，金属极板辊压专用机的结构是外牌坊（7）为一方形体，中间有一圆形通孔，在圆形通孔内安装有上、下压辊（12、10），分别通过上、下轴承座（13、9）安装在上、下旋转块（4、8）的凹槽内；用于径向微调的结构是伺服电动缸（1）通过连杆（2）与支座环（3）铰接，带动上旋转块（4）转动，实现对上压辊（12）的微调，下旋转块（8）由另一伺服电动缸驱动，实现左右转动，从而带动下压辊（10）径向移动，其特征是：在Y方向上，上、下压辊（12、10）的中心线与上、下旋转块（4、8）的中心线设有10~20mm的偏心距，伺服电动缸（1）驱动上旋转块（4）转动角度的范围是不大于11.31°；
所述伺服电动缸（1）控制支座环（3）的中心A运动轨迹为以O为圆心的弧线AC，且OA=600mm；上、下旋转块（4、8）的外轮廓线是以O为圆心、以OH为半径的圆，且OH=400mm；当偏心距OG为20mm，伺服电动缸（1）驱动上旋转块（4）转动角度∠AOC达到最大值11.31°时，上压辊（12）沿Y轴的竖直压下量为DE，沿X轴的横向移动距离为EO1， EO1=OG=20mm；上压辊（12）中心运动轨迹（11）以O为圆心，且弦DO1对应圆心角为∠DOO1；支座环（3）的中心A运动轨迹弧线AC对应连杆（2）的移动量AC ,其圆心角为∠AOC，∠DOO1与∠AOC为同一角；同时∠BAC与∠EDO1为内错角，则∠BAC=∠EDO1，△ABC与△DEO1为相似三角形；利用相似三角形原理，在△ABC内X轴方向上的线段BC与上压辊（12）的横向移动距离EO1有比值n= BC/EO1=5 .8835，Y方向上的线段AB与上压辊（12）的压下量DE的比值AB/DE=n；
当伺服电动缸（1）驱动的连杆（2）的移动量AC=1mm时，利用三角形勾股定理，则Y方向上线段AB<1*sin(∠ACB)=0 .0985mm，上压辊（12）的压下量DE= AB/n<(sin(∠ACB)* EO1)/BC=0 .01675mm，比值m=AC/DE＞BC/ (sin (∠ACB) * EO1) =59 .7078；当控制上压辊（12）的压下量DE为1μm，伺服电动缸（1）驱动的连杆移动量AC＞DE* BC/(sin(∠ACB)* EO1)≈0.06mm。
CN202011228104.XA 2020-11-06 2020-11-06 一种金属极板辊压专用机辊压成形的方法 Active CN112496035B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011228104.XA CN112496035B (zh) 2020-11-06 2020-11-06 一种金属极板辊压专用机辊压成形的方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011228104.XA CN112496035B (zh) 2020-11-06 2020-11-06 一种金属极板辊压专用机辊压成形的方法

Publications (2)

Publication Number Publication Date
CN112496035A CN112496035A (zh) 2021-03-16
CN112496035B true CN112496035B (zh) 2023-06-30

Family

ID=74955609

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011228104.XA Active CN112496035B (zh) 2020-11-06 2020-11-06 一种金属极板辊压专用机辊压成形的方法

Country Status (1)

Country Link
CN (1) CN112496035B (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114700374A (zh) * 2022-03-25 2022-07-05 山东国创燃料电池技术创新中心有限公司 一种专用辊压机控制方法
CN114639855A (zh) * 2022-03-25 2022-06-17 山东国创燃料电池技术创新中心有限公司 一种金属极板的辊压工艺

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0911091A2 (en) * 1997-10-21 1999-04-28 Ykk Corporation Wire rolling apparatus
CN1698987A (zh) * 1997-09-16 2005-11-23 石川岛播磨重工业株式会社 板厚的压板装置及其方法
CN106734193A (zh) * 2016-12-05 2017-05-31 重集团大连设计研究院有限公司 一种变断面轧板冷轧机

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB808847A (en) * 1956-01-23 1959-02-11 Watkin Eric Benson Improvements in machines for the formation of wheel rims and the like
DE2443002C3 (de) * 1974-09-07 1980-07-10 Heinz 5904 Eiserfeld Vuillot Dreiwalzen-Blechrundbiegemaschine zum Biegen zylinderischer oder kegeliger Blechschüsse
DE2744990C3 (de) * 1977-10-06 1980-07-17 Kuesters, Eduard, 4150 Krefeld Kalander zur Druckbehandlung von Bahnen
US5524469A (en) * 1993-11-08 1996-06-11 Sherwood; William L. Rolling mill stand
JPH10180319A (ja) * 1996-12-26 1998-07-07 Mitsubishi Heavy Ind Ltd ロールクロス２段圧延機
WO1999038637A1 (fr) * 1998-02-02 1999-08-05 Nkk Corporation Systeme de redressage et de coupe multi-barres dans une chaine de laminage d'acier en barres
JP3882394B2 (ja) * 1999-05-26 2007-02-14 トヨタ自動車株式会社 多連凹凸板用成形装置
DE19944612C1 (de) * 1999-09-17 2000-11-23 Sundwig Gmbh Walzgerüst
CN2488616Y (zh) * 2001-06-07 2002-05-01 湖南华菱管线股份有限公司涟钢事业部 防振轧机
CN201040414Y (zh) * 2007-04-16 2008-03-26 上海泓阳机械有限公司 一种精密定位式辊距调整装置
CN201244592Y (zh) * 2008-04-15 2009-05-27 邢台纳科诺尔极片轧制设备有限公司 一种液压伺服电池极片轧机
CN201316752Y (zh) * 2008-09-12 2009-09-30 淄博先河机电有限责任公司 卷板机
CN201415219Y (zh) * 2009-03-19 2010-03-03 无锡瑞佳精机有限公司 一种改进型二十辊钢板冷轧机板形调节机构
CN202591232U (zh) * 2012-05-17 2012-12-12 盘起工业(大连)有限公司 四辊轧制成型机的调整机构
CN105689393A (zh) * 2014-11-24 2016-06-22 西北机器有限公司 一种整体牌坊式八辊轧机
CN204866836U (zh) * 2015-06-02 2015-12-16 浙江业盛新型材料有限公司 分架式多辊轧机
CN106672676B (zh) * 2016-12-29 2018-04-17 中冶南方工程技术有限公司 带钢转向夹送装置
CN108097764A (zh) * 2018-02-01 2018-06-01 青岛哈文船艇有限公司 一种电动压筋机装置
CN208634121U (zh) * 2018-08-03 2019-03-22 邢台纳科诺尔精轧科技股份有限公司 一种电池极片辊压机辊缝控制系统
CN209109829U (zh) * 2018-12-10 2019-07-16 重庆邓氏厨具制造有限公司 一种数控轧机
CN210614655U (zh) * 2019-08-06 2020-05-26 中冶赛迪技术研究中心有限公司 一种轧机辊缝自动调整装置
CN210224164U (zh) * 2019-08-28 2020-03-31 郑州鼎能实业有限公司 一种同步间隙调整式辊压机
CN112170491B (zh) * 2020-09-30 2023-04-04 太原科技大学 一种金属极板辊压拉延成形机
CN112547799B (zh) * 2020-11-06 2023-02-24 太原科技大学 一种金属极板辊压专用机
CN114700374A (zh) * 2022-03-25 2022-07-05 山东国创燃料电池技术创新中心有限公司 一种专用辊压机控制方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1698987A (zh) * 1997-09-16 2005-11-23 石川岛播磨重工业株式会社 板厚的压板装置及其方法
EP0911091A2 (en) * 1997-10-21 1999-04-28 Ykk Corporation Wire rolling apparatus
CN106734193A (zh) * 2016-12-05 2017-05-31 重集团大连设计研究院有限公司 一种变断面轧板冷轧机

Also Published As

Publication number Publication date
CN112496035A (zh) 2021-03-16

Similar Documents

Publication Publication Date Title
CN112496035B (zh) 一种金属极板辊压专用机辊压成形的方法
CN105817968A (zh) 砂轮修整及光学元件磨边机
CN103317006B (zh) 一种对轮式柔性旋压的交流伺服直驱结构
CN102602208A (zh) 一种全液压驱动辊型微细压印装置
CN101659067B (zh) 具有回转和偏摆功能的五轴控制水切割头运动控制机构
CN107217558A (zh) 一种钢轨肥边自动打磨机
CN107165008A (zh) 一种可调节钢轨肥边打磨高度的打磨机
CN105728858B (zh) 一种大中型圆柱齿轮垂直交叉主轴式滚磨光整加工方法
CN106041319A (zh) 服装生产裁剪装置
CN113400197A (zh) 一种面齿轮磨削用鼓形蜗杆砂轮成形修整方法
CN102189236A (zh) 方圆坯兼用拉矫机
CN1114218C (zh) 复杂截面铠装超导缆导体线圈的无张力绕制方法及绕线机
CN110479836B (zh) 正多边形截面零件的旋压成形方法
CN102328235B (zh) 一种可完成精密微小型车铣磨复合加工的yb轴装置
CN101428325B (zh) 叶片无余量辊轧多自由度精密调整方法
CN103230994A (zh) 一种轴上微型槽的步进滚动辊压压印成形装置及方法
CN113976679B (zh) 一种大吨位的金属折弯传动机构
CN113617998B (zh) 一种管板成形的坯料及其制作方法、管板体外锻造方法
CN1014304B (zh) 一种平面包络磨齿方法及磨齿机
CN113458180B (zh) 一种板材反复弯曲校平加工装置及加工方法
CN212794504U (zh) 一种多工位球面滚子外径超精研机
CN2794686Y (zh) 辗环机的偏心轮滚轮进给机构
CN211540602U (zh) 轮毂轴承法兰盘复合成型磨削机构
CN221675459U (zh) 一种风扇总成带轮内筒旋压机
CN217018050U (zh) 一种管棒材矫直机的矫直辊角度调整装置

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant