公开(公告)号：US20120207421A1

公开(公告)日：2012-08-16

申请号：US13391933

申请日：2011-09-22

申请人： Masato Higuchi ,  Noriyuki Takeo ,  Yoshiaki Komura

发明人： Masato Higuchi ,  Noriyuki Takeo ,  Yoshiaki Komura

IPC分类号： F16C33/58 ,  B21D53/10 ,  C21D7/06

CPC分类号： B21D53/12 ,  B21D53/10 ,  B24C1/10 ,  F16C19/466 ,  F16C21/005 ,  F16C33/588 ,  F16C33/64 ,  F16C2220/40 ,  F16C2220/42 ,  F16C2240/18 ,  F16C2361/41 ,  F16D3/385 ,  F16D3/41 ,  Y10T29/49689

摘要： An outer ring 6a for a shell-type radial needle bearing having a cylindrical shape with a bottom is achieved for which fatigue life of the bottom plate section 9a and the continuous section between the bottom plate section 9a and the cylindrical section 8a is improved, as well as the anti-corrosion characteristic of the outer ring 6a is improved and the outer ring 6a can be prevented from coming out of the bearing without an increase in cost. After obtaining an intermediate raw material 35 having a cylindrical section and a bottom plate section from a metal raw material, shot peening is performed on the intermediate material 35 to create residual compressive stress in the surface and surface layer section on the outer surface side of the cylindrical section 8a and the bottom plate section 9a such that the residual compressive stress in the surface layer section on the outer surface side is greater than the in the surface layer section on the inner surface side, and from the surface to a depth of 0.03 mm is 700 MPa to 1600 MPa.

摘要翻译： 实现了具有底部圆柱形的壳型径向滚针轴承的外圈6a，底板部9a和底板部9a与圆筒部8a之间的连续部分的疲劳寿命得到改善，如 并且外圈6a的防锈特性得到改善，并且可以防止外圈6a从轴承中脱出而不增加成本。 在从金属原料获得具有圆筒形部分和底板部分的中间原料35之后，对中间材料35进行喷丸硬化，以在中间材料35的外表面侧的表面和表层部分产生残留的压缩应力 圆筒部8a和底板部9a，使得外表面侧的表层部的残留压缩应力大于内表面侧的表层部，并且从表面到0.03mm的深度 为700MPa〜1600MPa。

公开(公告)号：US08834034B2

公开(公告)日：2014-09-16

申请号：US13391933

申请日：2011-09-22

申请人： Masato Higuchi ,  Noriyuki Takeo ,  Yoshiaki Komura

发明人： Masato Higuchi ,  Noriyuki Takeo ,  Yoshiaki Komura

IPC分类号： F16C33/58 ,  F16C33/34 ,  F16D3/41 ,  F16C33/64 ,  F16C19/46 ,  F16D3/38

CPC分类号： B21D53/12 ,  B21D53/10 ,  B24C1/10 ,  F16C19/466 ,  F16C21/005 ,  F16C33/588 ,  F16C33/64 ,  F16C2220/40 ,  F16C2220/42 ,  F16C2240/18 ,  F16C2361/41 ,  F16D3/385 ,  F16D3/41 ,  Y10T29/49689

摘要： An outer ring 6a for a shell-type radial needle bearing having a cylindrical shape with a bottom is achieved for which fatigue life of the bottom plate section 9a and the continuous section between the bottom plate section 9a and the cylindrical section 8a is improved, as well as the anti-corrosion characteristic of the outer ring 6a is improved and the outer ring 6a can be prevented from coming out of the bearing without an increase in cost. After obtaining an intermediate raw material 35 having a cylindrical section and a bottom plate section from a metal raw material, shot peening is performed on the intermediate material 35 to create residual compressive stress in the surface and surface layer section on the outer surface side of the cylindrical section 8a and the bottom plate section 9a such that the residual compressive stress in the surface layer section on the outer surface side is greater than the in the surface layer section on the inner surface side, and from the surface to a depth of 0.03 mm is 700 MPa to 1600 MPa.

摘要翻译： 实现了具有底部圆柱形的壳型径向滚针轴承的外圈6a，底板部9a和底板部9a与圆筒部8a之间的连续部分的疲劳寿命得到改善，如 并且外圈6a的防锈特性得到改善，并且可以防止外圈6a从轴承中脱出而不增加成本。 在从金属原料获得具有圆筒形部分和底板部分的中间原料35之后，对中间材料35进行喷丸硬化，以在中间材料35的外表面侧的表面和表层部分产生残留的压缩应力 圆筒部8a和底板部9a，使得外表面侧的表层部的残留压缩应力大于内表面侧的表层部，并且从表面到0.03mm的深度 为700MPa〜1600MPa。