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1. 发明专利

JP2014151692A Axle housing and producing method of the same 有权
标题翻译：轴承座及其制造方法
公开(公告)号：JP2014151692A
公开(公告)日：2014-08-25
申请号：JP2013021176
申请日：2013-02-06
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： NAKAJIMA TOSHIO
IPC分类号： B60B35/16 , B60G9/00
摘要： PROBLEM TO BE SOLVED: To provide an axle housing which prevents shrinkage crack at a weld part between a body part and a tube end and has high mechanical strength, and to provide a producing method of the same.SOLUTION: The axle housing comprises: a body part having a trunk for storing a differential gear of the vehicle and a cylindrical part extending toward both ends of the trunk; and a tube end jointed to a tip of the cylindrical part by weldment. The weld part between the cylindrical part and the tube end is formed by performing twice or more weldment, and by weld layers having two or more layers formed of a same kind metal.
摘要翻译：要解决的问题：提供一种防止体部和管端之间的焊接部处的收缩裂纹并具有高机械强度的轴壳，并提供其制造方法。解决方案：轴壳包括：主体部分具有用于存储车辆的差速齿轮的行李箱和一个朝主体两端延伸的圆柱形部件; 并且通过焊件连接到圆柱形部分的尖端的管端。圆筒部与管端之间的焊接部通过进行两次以上的焊接，并且由具有由相同种类的金属形成的两层以上的焊层形成。

2. 发明专利

JP2010247765A Axle housing tube end separation method and tube end separation device used for the same 审中-公开
标题翻译：轴套端部分离方法和用于其的管端分离装置
公开(公告)号：JP2010247765A
公开(公告)日：2010-11-04
申请号：JP2009101552
申请日：2009-04-20
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： NAKAJIMA TOSHIO
IPC分类号： B60B35/16 , B23K31/00 , F16B11/00 , F16H57/02 , F16H57/037 , F16H57/038 , F16H57/039
摘要： PROBLEM TO BE SOLVED: To separate tube ends welded on ends of axle cases of an axle housing in favorable working efficiency.
SOLUTION: In the axle housing H which includes tubular axle cases H21, H22 extending to right and left from a body H1 accommodating a differential gear and which welds to fix tubular tube ends T1, T2 on end openings of the respective axle cases H21, H22, a load is applied on the tube end T1 in a direction cross to its axle while the axle case H21 is positionally fixed so as to destroy the welding part between the axle case H21 and the tube end T1 after the welding bead between the axle case H21 and the tube end T1 is removed. Subsequently, the tube end T1 is extracted.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：以良好的工作效率分离焊接在轴壳的轴箱端部上的管端。解决方案：在车轴壳体H中，其包括从容纳差速齿轮的主体H1向左右延伸的管状轴箱H21，H22，并且焊接以将管状管端部T1，T2固定在相应车轴壳体的端部开口上 H21，H22，在管端T1上沿与其车轴交叉的方向施加载荷，同时轴箱H21位置固定，以便在焊接胎圈之间的焊道之后破坏轴箱H21与管端T1之间的焊接部分轴箱H21和管端T1被移除。随后，提取管端T1。版权所有（C）2011，JPO＆INPIT

3. 发明专利

JP2007130661A Multi-stage forward extrusion method 审中-公开
标题翻译：多阶段前向挤压方法
公开(公告)号：JP2007130661A
公开(公告)日：2007-05-31
申请号：JP2005325413
申请日：2005-11-09
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： YOSHIDA HIROAKI , ITO JUICHI , NAKAJIMA TOSHIO
IPC分类号： B21C23/08 , B21C23/00 , B21C25/02 , B21J5/06
摘要： PROBLEM TO BE SOLVED: To provide a multi-stage forward extrusion method capable of preventing generation of internal cracks during the extrusion, and reducing the manufacturing cost. SOLUTION: The forward extrusion is performed by using a material having the similar quenching property evaluated in terms of manganese equivalent Mneq, and the die angle α of an extrusion die forming a preset area where any chevron crack (internal crack of a center) is hardly generated for each stage of the extrusion, and the reduction rate of area Rd at the extrusion. By performing the extrusion using the die angle α of the extrusion die forming the preset area where such a chevron crack is hardly generated, and the reduction rate of area Rd at the extrusion, the forward extrusion free from any internal crack can be performed even when simplifying or eliminating the heat treatment for the softening in advance, or even without using a material to be worked having a special metal composition. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够防止在挤出期间产生内部裂纹的多级正向挤出法，并降低制造成本。解决方案：正向挤出通过使用具有以锰当量Mneq评估的类似淬火特性的材料和形成预定区域的挤出模头的模角α进行，其中任何人字纹裂纹（中心的内部裂纹）对于挤出的每个阶段几乎不产生，并且挤出时的面积Rd的减小率。通过使用挤出模具的模角α进行挤压，形成几乎不产生这种人字纹裂纹的预设区域，以及挤出时的面积Rd的减小率，即使当没有任何内部裂纹时，即使当预先简化或消除用于软化的热处理，或甚至不使用具有特殊金属组成的待加工材料。版权所有（C）2007，JPO＆INPIT

4. 发明专利

JP2014117997A Manufacturing method for axle housing and axle housing 有权
标题翻译：轴承座和轴套的制造方法
公开(公告)号：JP2014117997A
公开(公告)日：2014-06-30
申请号：JP2012273347
申请日：2012-12-14
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： NAKAJIMA TOSHIO
IPC分类号： B60B35/16
摘要： PROBLEM TO BE SOLVED: To provide a manufacturing method for an axle housing having high mechanical strength, and the axle housing.SOLUTION: An upsetting process is performed in which ends of cylindrical portions 12 extending into both ends of a body portion of a main body portion are pressed into on heating to increase the thickness of the ends of the cylindrical portions, and then a part of inner wall surfaces of the end portions of the cylindrical portions is cut off to remove a forged skin so as to make the thickness of the end portions of the cylindrical portions the same as or larger than the thickness before the upsetting process. Subsequently, a tube end 20 is pressed into the cylindrical portions 12 in a tight fit state to weld the end portions of the cylindrical portions to the tube end.
摘要翻译：要解决的问题：提供一种具有高机械强度的车轴壳体和车轴壳体的制造方法。解决方案：进行镦锻过程，其中圆柱形部分12的端部延伸到主体的主体部分的两端将部分压入加热中以增加圆柱形部分的端部的厚度，然后切除圆柱形部分的端部的内壁表面的一部分以除去锻造的皮肤，从而使得圆筒部的端部与镦锻处理前的厚度相同或者更大。随后，将管端20以紧密配合的状态压入圆筒形部分12，以将圆柱形部分的端部焊接到管端。

5. 发明专利

JP2014151691A Axle housing and axle housing manufacturing device 有权
标题翻译：轴承座和轴套制造设备
公开(公告)号：JP2014151691A
公开(公告)日：2014-08-25
申请号：JP2013021175
申请日：2013-02-06
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： NAKAJIMA TOSHIO
IPC分类号： B60B35/16 , B23B5/48 , B23D5/02
摘要： PROBLEM TO BE SOLVED: To provide an axle housing preventing the leakage of oil from a flange portion, and a manufacturing device of the same.SOLUTION: On a surface of a flange 30 welded to an opening portion of an axle housing body 10, a concentric or spiral cutting mark is formed. An axle housing manufacturing device for forming the cutting mark has a first rack 41 disposed on an axis vertical to the surface of the flange; a second rak 42 disposed in parallel with the surface of the flange; a pinion gear 43 engaged with the first rack and the second rack; and a cutting tool 45 fixed to the second rack, and contacted with the surface of the flange at a cutting portion. The first rack, the pinion gear, and the second rack can integrally rotate about a center axis of the first rack.
摘要翻译：要解决的问题：提供防止油从凸缘部分泄漏的轴壳及其制造装置。解决方案：在与轴壳体10的开口部分焊接的凸缘30的表面上，形成同心或螺旋切割标记。用于形成切割标记的轴壳体制造装置具有设置在垂直于凸缘表面的轴线上的第一齿条41; 与凸缘的表面平行设置的第二凸缘42; 与第一齿条和第二齿条接合的小齿轮43; 以及固定在第二齿条上的切削工具45，在切削部与凸缘的表面接触。第一齿条，小齿轮和第二齿条可围绕第一齿条的中心轴线一体旋转。

6. 发明专利

JP2002029211A AXLE HOUSING AND MANUFACTURING METHOD THEREFOR 失效
公开(公告)号：JP2002029211A
公开(公告)日：2002-01-29
申请号：JP2000215493
申请日：2000-07-17
申请人： DAIDO STEEL CO LTD
发明人： NAKAJIMA TOSHIO
IPC分类号： B60B35/16 , B21D22/04 , B21D53/90
摘要： PROBLEM TO BE SOLVED: To provide an axle housing and a manufacturing method for it, capable of reducing the man-hours of welding and welding part and attaining high strength. SOLUTION: This axle housing 10 is provided with a pair of upper and lower housing members 12a, 12b having both side B-shaped parts 14, 15 substantially U-shaped in section and a central semi-circular part 16. The U-shaped parts 14, 15 are welded opposite to each other to form a pair of right and left cylindrical parts 20, 20, and a pair of circular opening parts 26, 28 are formed between the cylindrical parts and in front and in rear of an annular part 24 formed by a pair of semi-circular parts 16. The welding parts W of the cylindrical parts 20 are positioned on both right and left sides of the opening parts 26, 28. In an axle housing 11, a ring-shaped flange 30 is welded to the outside of one opening part 26, and a substantially semi-spherical cover 34 for covering the flange is fixed to the other opening part 28. Pipe-like tube ends 35 are respectively coaxially connected to the outer ends of the cylindrical parts 20.

7. 发明专利

JPH07265972A METHOD FOR REPRODUCING PUNCHING DIE 失效
公开(公告)号：JPH07265972A
公开(公告)日：1995-10-17
申请号：JP7978794
申请日：1994-03-25
申请人： DAIDO STEEL CO LTD
发明人： NAKAJIMA TOSHIO
IPC分类号： B23H9/00 , B21D28/14 , B21D37/20 , B23K10/02
摘要： PURPOSE:To make it possible to conduct built-up welding by a robot and to reduce cost and labor in a method for reproducing a punching die for presses whose edge part is worn or chipped by the use by built-up welding. CONSTITUTION:A backplate 3 formed so that the external size of a metallic plate having a specified thickness is matched to the shape of a cavity is fit into the cavity of the punching die 1, a through hole 6 for mitigating thermal stress is bored in the center part of the backplate 3, also a groove 7 is formed on the boundary line 4 between the backplate 3 and the punching die 1, built-up welding is executed in the groove 7, after that, the backplate 3 is removed by cutting the weld base 9, and the punching die is finished by mechanically grinding the edge part 5 of the cavity of the punching die 1.

8. 发明专利

JPH03264255A TURNED SURFACE FINISHING METHOD FOR METALLIC MATERIAL 失效
公开(公告)号：JPH03264255A
公开(公告)日：1991-11-25
申请号：JP6457490
申请日：1990-03-15
申请人： DAIDO STEEL CO LTD
发明人： NAKAJIMA TOSHIO , MAKINO TETSUYA
IPC分类号： B23P9/02 , B23B1/00 , B24B3/04
摘要： PURPOSE:To improve workability and to provide a finish product having excellent size accuracy and surface characteristics by feeding a diamond as a diamond head is pressed against the turned surfaces of a metallic material in a state to rotate the metallic material after a turning work, and squeezing the tool marks of turned surfaces. CONSTITUTION:By using a CNC lathe having a tool 51 to the tip of which a diamond 61 is fixed, a metallic material 11 after a turning work is rotated. With this state, the diamond 61 is fed as the diamond 61 is pressed against turned surfaces 21, 22, and 23 of the metallic material 11 to squeeze the tool marks of the turned surfaces 21, 22, and 23.

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