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1、偏心滚针轴承产品分析 Eccentric Needle Roller Bearing Product Analysis常州东风轴承有限公司 技术开发部 CHANGZHOU DONGFENG BEARING CO.,LTD TECHNICAL DEVELOPMENT 2009，1，7Eccentric Bearing Technical InfoIntroductionEccentric Bearing Technical InfoLoadingTemperatures range: -40 to 125CBearing drives a pump generating 350 bar maxi
2、mum pressureMax piston diameter is 9 mmPressure * p * (/2)2 = 501 lbf偏心滚针轴承设计主要尺寸 The Major Size of Eccentric needle roller bearing designThe Calculation of Eccentric bearing Rated load and rating liftthe greatest load of Bearing actually bear Pr=501 Ibf=2.23KNRated load calculation：Cr=fc*Lwe7/9 *Z3
3、/4 *Dwe29/27 (ISO281:1990)one fc：FactorLwe：the length of NeedleZ：the Amount of NeedleDwe：dia.of NeedleF-232214.11 Cr=85.41*9.87/9 *283/4 *1.50529/27 =9.52 KNF-232214.12 Cr=85.927*9.87/9 *273/4 *1.50529/27 =9.32K N F-550207.01 Cr=85.135*7.87/9 *293/4 *1.5129/27 =8.19K N The Calculation of bearing rat
4、ing lift ：L10=（Cr/Pr）10/3 (ISO281:1990)F-232214.11 L10=（Cr/Pr）10/3 =126.2 MrpmF-232214.12 L10=（Cr/Pr）10/3 =117.6 MrpmF-550207.01 L10=（Cr/Pr）10/3 =76.43 MrpmThe Data analysis of Eccentric bearing Rated load and rating lift F- 232214.11 Pr/Cr=23.4%50% Bearing security force，Sustainability in the 501lb
5、f largest load of the operating environment, 126 200 000rpmF-232214.12 Pr/Cr=23.9%50% Bearing security force，Sustainability in the 501lbf largest load of the operating environment, 117 600 000rpm F-550207.01 Pr/Cr=27.2%50% Bearing security force，Sustainability in the 501lbf largest load of the opera
6、ting environment, 76 430 000rpm原材料说明 Material Explanation 冲压外圈 Stamped external ring20#冷轧钢板（AISI 1020） 20# cold rolling steel plate材料供应商：中国 鞍钢集团 material supplier: ANGANG STEEL CO.,LTD CHINA 滚针 NEEDLEGCr15冷拔钢丝（AISI 52100） GCr15 cold drawing steel silk材料供应商：中国 宝钢集团上钢五厂material supplier: The 5 factory
7、 of BAO STEEL CO.,LTD CHINA原材料说明 Material Explanation 垫圈 WASHER65Mn冷轧钢板（AISI 1050） 65Mn cold rolling steel plate材料供应商：中国 新余钢厂material supplier: XINYU STEEL COMPANY CHINA 偏心轮 ECCENTRIC GEAR20#冷拔钢丝 (AISI 1020) 20# cold drawing steel silk材料供应商：中国 首钢集团material supplier: SHOU STEEL CO.,LTD CHINA零件热处理要求 H
8、EAT TRETMENT REQUIREMENTS OF PARTS 冲压外圈 Stamped external ring表面渗碳淬火，表面硬度680840HV，硬化深度 0.30.35Surface carburization and quenching, Surface hardness 680840HV,Harden depth 0.30.35 滚针 NEEDLE整体淬火，硬度HRC6165 Whole quenching, hardness HRC6165零件热处理要求 HEAT TRETMENT REQUIREMENTS OF PARTS 垫片 WASHER整体淬火，硬度664840
9、HV Whole quenching, hardness 664840HV 偏心轮 ECCENTRIC GEAR表面渗碳淬火，圆柱表面硬度680840HV，硬化深度 0.40.50Surface carburization and quenching, cylindrical surface hardness 680840HV,harden depth 0.400.50零件制造工艺流程 Process flow chart of part producing 冲压外圈 Stamped external ring剪料 成型 拉伸 压底 打标记Blanking forming drawing pr
10、ess bottom marking切底cut bottom车边chamfer窜光表面 局部退火 除油 热处理Surface finishing Part annealing degrease Heat treatment零件制造工艺流程 Process flow chart of part producing 滚针NEEDLE 切断 除油 软磨外径 窜倒角 热处理cutting degrease soft grinding o. d chamfer heat treatment除油degrease粗磨外径kibble o. d终磨外径 精磨外径 细磨外径final grinding o. d
11、 soft grinding o. d soft grinding o. d 零件制造工艺流程 Process flow chart of part producing 垫片 WASHER 切料 成型 去除毛刺 热处理cutting forming deburring heat treatment 除油degrease表面氧化处理surface oxidation treatment零件制造工艺流程 Process flow chart of part producing 偏心轮 ECCENTRIC GEAR切料 倒角 软磨外径 渗碳淬火 除油cutting chamfer soft grin
12、ding o. d carburization and quenching degrease磨两端面grinding two sides终磨外径 铰孔 倒角 钻孔final grinding o. d Reaming chamfer solid boring产品装配工艺流程 The process flow chart of product assembling 零件清洗 装配滚针 内径检验 parts cleaning assembling needle I.D inspection装配偏心轮assembling eccentric gear装配垫片 assembling washer 产品
13、交付 包装 清洗 检验 弯边delivery packing cleaning inspection beading产品开发进度表 Product development plan问 题 PROBLEM 将轴承压入电机轴的压力？ Whats the pressure of pressing the bearing into electrical machine? 偏心轮的内径尺寸？ The I,D size of eccentric gear? INA样品偏心轮的最小厚度1.198，TRW要 求的最小厚度为1.5 The min thickness of INA sample eccentri
14、c gear is 1.198,TRW is 1.5 DFB与INA不同点 Differences between DFB and INA INA偏心轮采用GCr15(AISI 52100)材料，表面高频淬火，圆柱表面 硬度662HV，硬化深度0.42，端面硬度236HV0.2 INA s eccentric gear AISI 52100 ,surface quenching often ,cylindrical surface hardness is 662HV , harden depth 0.42,head face hardness 236HV0.2 DFB偏心轮采用20#钢（AISI 1020）材料，表面渗碳淬火，圆柱表面 硬度680840HV，硬化深度0.400.50，渗碳淬火后采用磨两端面的 方法将端面的硬化层去除。 DFB s eccentric gear AISI 1020 steel, surface carburization and que
