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1. 发明授权

US3781958A Method of making rolling element bearings 失效
标题翻译：制造滚动元件轴承的方法
公开(公告)号：US3781958A
公开(公告)日：1974-01-01
申请号：US3781958D
申请日：1972-08-14
申请人： NASA
发明人： PARKER R
IPC分类号： B23D15/00 , B23P15/00 , F16C33/32 , B23P11/00 , B21H1/14
CPC分类号： F16C33/32 , B23D15/00 , B23P15/003 , Y10T29/49684 , Y10T29/49694
摘要： Making rolling elements by forming low mass cores having either hollow centers or being of a low mass material. The low mass cores are plated and heat treated to provide hard surfaces on the rolling elements. After grinding to the proper diameter the rolling elements are assembled between races to form a bearing.
摘要翻译：通过形成具有中空中心或低质量材料的低质量芯来制造滚动元件。低质量芯被电镀和热处理以在滚动元件上提供硬表面。在研磨到适当的直径后，将滚动元件组装在座圈之间以形成轴承。

2. 发明授权

US3751123A Low mass rolling element for bearings 失效
标题翻译：用于轴承的低质量滚动元件
公开(公告)号：US3751123A
公开(公告)日：1973-08-07
申请号：US3751123D
申请日：1971-11-24
申请人： NASA
发明人： PARKER R
IPC分类号： F16C33/32
CPC分类号： F16C33/32
摘要： A low mass rolling element has a lightweight core with a hollow center or is made of a low density material. The core is plated to provide a hard surface.
摘要翻译：低质量滚动元件具有具有中空中心的轻质芯体或由低密度材料制成。芯被镀以提供硬表面。

3. 发明专利

SE318297B 未知
公开(公告)号：SE318297B
公开(公告)日：1969-12-08
申请号：SE143766
申请日：1966-02-04
申请人： NASA
发明人： ZARETSKY E , PARKER R , ANDERSON W
IPC分类号： C21D9/32 , C21D9/36 , F16C33/30 , F16C33/62 , F16C33/64 , C21D9/40
摘要： 1,117,841. Bearings; gearing. NATIONAL AERONAUTICS & SPACE ADMINISTRATION. 4 Feb., 1966 [8 Feb., 1965], No. 5050/66. Headings F2A and F2Q. [Also in Division B3] A method of making a rolling-element system having elements in rolling and sliding contact wherein one or more elements in contact receive a greater number of stress cycles on each point of the surface during the operation of the system than the other elements, comprises heat treating the elements receiving the lesser number of stress cycles per point to a predetermined hardness and heat treating the elements receiving the greater number of stress cycles per point to one to two points Rockwell C hardness less than the elements in contact therewith having the lesser number of stress cycles. When making rolling-element bearings blanks of highchromium steel are fabricated into rings and heat treated to a Rockwell C hardness not exceeding 60. The rings are then ground to form inner and outer races. Bearing balls are made from high carbon chromium steel and heat treated to a hardness approximately equal to that of the races. Subsequently the inner and outer races are tempered to a Rockwell C hardness one to two points less than the rolling elements. The rolling elements and races are then ground to their final dimensions and finish and finally assembled. Alternatively the races can be brought to their lower degree of hardness subsequent to being ground and finished. In a modification the race blanks are heat treated to at least Rockwell C58 hardness and the rolling element blanks to one or two points greater hardness prior to grinding and finishing. The method is also applicable to gear trains, in which case the gears having the greater number of teeth of meshing pairs are heat treated to a Rockwell C hardness one to two points more than the smaller gears.

4. 发明授权

US3802753A Hollow rolling element bearings 失效
标题翻译：中空滚动元件轴承
公开(公告)号：US3802753A
公开(公告)日：1974-04-09
申请号：US34636173
申请日：1973-03-30
申请人： NASA
发明人： PARKER R
IPC分类号： F16C33/32 , F16C33/30 , F16C33/00
CPC分类号： F16C33/32
摘要： A low mass rolling element has a lightweight core with a hollow center. The core is plated to provide a hard surface.
摘要翻译：低质量滚动元件具有具有中空中心的轻质芯。芯被镀以提供硬表面。

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