公开(公告)号：JP2011027162A

公开(公告)日：2011-02-10

申请号：JP2009172722

申请日：2009-07-24

申请人： Nakamura Jiko Co Ltd ,  株式会社中村自工

发明人： KAWAMURA HIDENORI ,  KATO TSUYOSHI ,  SHISHIDO TAKAHIDE ,  KIKUCHI DAISUKE

IPC分类号： F16D3/38

摘要： PROBLEM TO BE SOLVED: To improve durability and prolong a service life with a simple constitution, by allowing lubrication oil to smoothly spread over the entirety of roller shafts, preventing relative movement at every row in the plurality of rows of roller shafts, preventing the occurrence of seizure and abrasion of the roller shafts and maintaining stable operation for a long period.
SOLUTION: All the roller shafts 5 in bearings of a cross shaft are formed to have the same diameter. In the roller shaft row 5-1 of an upper column, the short roller shafts 50 and the long roller shafts 51 are alternately arranged. In the roller shaft row 5-2 of a lower column, the long roller shafts 51 are arranged correspondently to the short roller shafts 50 of the roller shaft row 5-1 of the upper column and the short roller shafts 50 are arranged correspondently to the long roller shafts 51 of the roller shaft row 5-1 of the upper column.
COPYRIGHT: (C)2011,JPO&INPIT

摘要翻译： 要解决的问题：为了通过简单的结构提高耐久性和延长使用寿命，通过允许润滑油平滑地铺展在整个辊轴上，防止多行辊轴中的每一排的相对运动， 防止辊轴的发生和磨损的发生，并且长期保持稳定的操作。

解决方案：横轴的轴承中的所有滚子轴5形成为具有相同的直径。 在上列的辊轴列5-1中，短辊轴50和长辊轴51交替布置。 在下列的辊轴列5-2中，长辊轴51相对于上柱的辊轴列5-1的短辊轴50布置，短辊轴50相对于 上柱的辊轴列5-1的长辊轴51。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2011038600A

公开(公告)日：2011-02-24

申请号：JP2009186990

申请日：2009-08-12

申请人： Nakamura Jiko Co Ltd ,  株式会社中村自工

发明人： KAWAMURA HIDENORI ,  KATO TSUYOSHI ,  SHISHIDO TAKAHIDE ,  KIKUCHI DAISUKE

IPC分类号： F16D3/41 ,  B24C1/10 ,  F16C33/34 ,  F16C33/62 ,  F16C33/64 ,  F16D1/02

摘要： PROBLEM TO BE SOLVED: To improve surface strength (hardness and residual compressive stress) in a rolling part or a sliding part, to prevent shortage of oil film, and to improve durability with a simple method. SOLUTION: First, outer shape machining is performed by roughing such as lathe turning with respect to a component material of a bearing 13 and a roller shaft 14 made of high carbon chromium bearing steel (outer shape machining process; step S1). Next, carburizing-quenching-tempering and/or high frequency induction hardening is carried out (heat treatment process; step S2). After that, finishing such as polishing is performed (finishing process; step S3), and fine particle peening is performed with respect to the component material after finishing (surface treatment process; step S4). By performing the processes, recessions and projections having surface hardness of 800 HV or more, residual compressive stress in 30 μm from the surface of equal to or not more than -800 MPa, and surface roughness of about Ra 0.4 μm are formed on a surface of the component material. COPYRIGHT: (C)2011,JPO&INPIT

摘要翻译： 要解决的问题：为了改善滚动部件或滑动部件中的表面强度（硬度和残余压缩应力），以防止油膜短缺，并且通过简单的方法提高耐久性。 解决方案：首先，通过相对于轴承13的部件材料的车床转动和由高碳铬轴承钢（外形加工工艺;步骤S1）制成的辊轴14进行粗加工来进行外形加工。 接下来，进行渗碳淬火回火和/或高频感应淬火（热处理工序; S2）。 之后，进行抛光等精加工（精加工;步骤S3），对精加工后的成分材料进行细粒喷丸处理（表面处理工序;步骤S4）。 通过进行具有800HV以上的表面硬度的工序，凹部和突起，从表面等于或不大于-800MPa的残余压应力和约Ra0.4μm的表面粗糙度形成在表面 的组分材料。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2011017412A

公开(公告)日：2011-01-27

申请号：JP2009163627

申请日：2009-07-10

申请人： Nakamura Jiko Co Ltd ,  株式会社中村自工

发明人： SHISHIDO TAKAHIDE ,  KAWAMURA HIDENORI

IPC分类号： F16D3/41

摘要： PROBLEM TO BE SOLVED: To improve stability and reliability by preventing a bearing from being baked and damaged by surely preventing a lubricating oil from being unevenly distributed in each oil hole of a cross shaft with a simple constitution.SOLUTION: When supplied from each oil supply nipple 10, a lubricating oil such as grease reaches an oil hole 8 through an oil supply hole 9 and communication passage 11, passes through an oil groove part between a top plate and a bottom plate 6 of a bearing 4 from the oil hole 8 and is fed to a roller shaft 5 of the bearing 4. Hence, the lubricating oil is brought into an independent state in each oil hole 8 and is prevented from being flown from one oil hole 8 to the other oil hole 8. Even when the universal joint becomes high temperature and the lubricating oil softens to easily move downward due to gravity, therefore, for instance, the lubricating oil is prevented from being moved to the oil hole 8 in the downward position to be deviated due to self weight and from being unevenly distributed in some part of oil holes 8 due to a centrifugal force due to joint rotation at startup.

摘要翻译： 要解决的问题：为了提高稳定性和可靠性，通过以简单的结构可靠地防止润滑油不均匀地分布在横轴的每个油孔中，从而防止轴承受到烘烤和损坏。解决方案：当从每个油源 乳头10，油脂等润滑油通过供油孔9和连通路11到达油孔8，从油孔8穿过轴承4的顶板和底板6之间的油槽部分， 被供给到轴承4的辊轴5.因此，润滑油在每个油孔8中处于独立状态，并且防止其从一个油孔8流到另一个油孔8。 接头成为高温，润滑油由于重力而软化，容易向下移动，因此例如防止润滑油向下移动到油孔8，由于t而偏离 并且由于由于启动时的关节旋转引起的离心力而在油孔8的一些部分中不均匀地分布。