机械设计期末复习滚动轴承习题

由天下分享时间：2025/1/16 1:27:54 加入收藏我要投稿点赞

We will continue to improve the company's internal control system, and steady improvement in ability to manage and control, optimize business processes, to ensure smooth processes, responsibilities in place; to further strengthen internal controls, play a control post independent oversight role of evaluation complying with third-party responsibility; to actively make use of internal audit tools detect potential management, streamline, standardize related transactions, strengthening operations in accordance with law. Deepening the information management to ensure full communication \o constantly perfect ERP, and BFS++, and PI, and MIS, and SCM, information system based construction, full integration information system, achieved information resources shared; to expand Portal system application of breadth and depth, play information system on enterprise of Assistant role; to perfect daily run maintenance operation of records, promote problem reasons analysis and system handover; to strengthening BFS++, and ERP, and SCM, technology application of training, improve employees application information system of capacity and level. Humanistic care to ensure \To strengthening Humanities care, continues to foster company wind clear, and gas are, and heart Shun of culture atmosphere; strengthening love helped trapped, care difficult employees; carried out style activities, rich employees life; strengthening health and labour protection, organization career health medical, control career against; continues to implementation psychological warning prevention system, training employees health of character, and stable of mood and enterprising of attitude, created friendly fraternity of Humanities environment. To strengthen risk management, ensure that the business of \o strengthened business plans management, will business business plans cover to all level, ensure the business can control in control; to close concern financial, and coal electric linkage, and energy-saving scheduling, national policy trends, strengthening track, active should; to implementation State-owned assets method, further specification business financial management; to perfect risk tube control system, achieved risk recognition, and measure, and assessment, and report, and control feedback of closed ring management, improve risk prevention capacity. o further standardize trading, and strive to achieve \ng to law, standardize and fair.\of performance management, to ensure that potential employees \o strengthen performance management, process control, enhance employee evaluation and levels of effective communication to improve performance management. To further quantify and refine employee standards ... Work, full play party, and branch, and members in \prise\n the of core role, and fighting fortress role and pioneer model role; to continues to strengthening \good\dership construction 一、选择题

从下列各小题给出的答案中任选一个：

1、滚动轴承内圈与轴颈、外圈与座孔的配合。

A. 均为基轴制 B. 前者基轴制，后者基孔制 C. 均为基孔制 D. 前者基孔制，后者基轴制

2、不宜用来同时承受径向载荷和轴向载荷，只能承受轴向载荷，通常应成对使用。

A. 圆锥滚子轴承 B. 角接触球轴承 C. 深沟球轴承 D. 圆柱滚子轴承 E. 推力球轴承 F. 滚针轴承

3、选择滚动轴承时，若主要承受径向载荷，常用，为方便装拆常用，需要有一定调心要求常用。

A.10000型 B.51000型 C.30000型 D.60000型 E.70000型 F.N0000型 4、跨距较大并承受较大径向载荷的起重机卷筒轴轴承应选用。 A. 深沟球轴承 B. 圆锥滚子轴承 C. 调心滚子轴承 D. 圆柱滚子轴承 5、滚动轴承的额定寿命是指同一批轴承中的轴承能达到的寿命。 A. 99％ B. 90％ C. 95％ D. 50％ 6、角接触轴承承受轴向载荷的能力，随接触角?的增大而。 A. 增大 B. 减小 C. 不变 D. 不定

7、滚动轴承的代号由前置代号、基本代号和后置代号组成，其中基本代号表示。 A. 轴承的类型、结构和尺寸 B. 轴承组件 C. 轴承内部结构变化和轴承公差等级 D. 轴承游隙和配置

lay levels cadres in enterprise development in the of backbone backbone role; to full strengthening members youth work, full play youth employees in company development in the of force role; to improve independent Commission against corruption work level, strengthening on enterprise business key link of effectiveness monitored. , And maintain stability. To further strengthen publicity and education, improve the overall legal system. We must strengthen safety management, establish and improve the education, supervision, and evaluation as one of the traffic safety management mechanism. o conscientiously sum up the Olympic security controls, promoting integrated management to a higher level, higher standards, a higher level of development. Employees, today is lunar calendar on December 24, the ox Bell is about to ring, at this time of year, we clearly feel the pulse of the XX power generation company to flourish, to more clearly hear XX power generation companiemature and symmetry breathing. Recalling past one another across a railing, we are enthusiastic and full of confidence. Future development opportunities, we more exciting fight more spirited. Employees, let us together across 2013 full of challenges and opportunities, to create a green, low-cost operation, full of humane care of a world-class power generation company and work hard! The occasion of the Spring Festival, my sincere wish that you and the families of the staff in the new year, good health, happy, happy!We will continue to improve the company's internal control system, and steady improvement in ability to manage and control, optimize business processes, to ensure smooth processes, responsibilities in place; to further strengthen internal controls, play a control post independent oversight role of evaluation complying with third-party responsibility; to actively make use of internal audit tools detect potential management, streamline, standardize related transactions, strengthening operations in accordance with law. Deepening the information management to ensure full communication \o constantly perfect ERP, and BFS++, and PI, and MIS, and SCM, information system based construction, full integration information system, achieved information resources shared; to expand Portal system application of breadth and depth, play information system on enterprise of Assistant role; to perfect daily run maintenance operation of records, promote problem reasons analysis and system handover; to strengthening BFS++, and ERP, and SCM, technology application of training, improve employees application information system of capacity and level. Humanistic care to ensure \To strengthening Humanities care, continues to foster company wind clear, and gas are, and heart Shun of culture atmosphere; strengthening love helped trapped, care difficult employees; carried out style activities, rich employees life; strengthening health and labour protection, organization career health medical, control career against; continues to implementation psychological warning prevention system, training employees health of character, and stable of mood and enterprising of attitude, created friendly fraternity of Humanities environment. To strengthen risk management, ensure that the business of \o strengthened business plans management, will business business plans cover to all level, ensure the business can control in control; to close concern financial, and coal electric linkage, and energy-saving scheduling, national policy trends, strengthening track, active should; to implementation State-owned assets method, further specification business financial management; to perfect risk tube control system, achieved risk recognition, and measure, and assessment, and report, and control feedback of closed ring management, improve risk prevention capacity. o further standardize trading, and strive to achieve \ng to law, standardize and fair.\of performance managemnt, to ensure that potential employees \o strengthen performance management, process control, enhance employee evaluation and levels of effective communication to improve performance management. To further quantify and refine employee standards ... Work, full play party, and branch, and members in \prise\n the of core role, and fighting fortress role and pioneer model role; to continues to strengthening \good\dership construction 8、如下所示结构图的简图为。

（A）（B） (C) (D) 二、填空题

1、滚动轴承的主要失效形式是和。

2、对于回转的滚动轴承，一般常发生疲劳点蚀破坏，故轴承的尺寸主要按计算确定；对于不转、转速极低或摆动的轴承，常发生塑性变形破坏，故轴承尺寸应主要按计算确定。

3、代号为7207AC的滚动轴承是轴承类型，内径为 mm，接触角

?= ，公差等级为；代号为6308/P4的滚动轴承是

轴承类型，内径d= mm，公差等级为。

4、其它条件不变，只把球轴承上的当量动载荷增加一倍，则该轴承的基本额定寿命是原来的；若只把球轴承的基本额定动载荷增加一倍，则该轴承的基本额定寿命是原来的。

5、圆锥滚子轴承承受轴向载荷的能力取决于轴承的。

6、滚动轴承内、外圈轴线的夹角称为偏转角，各类轴承对允许的偏转角都有一定的限制，允许的偏转角越大，则轴承的性能越好。

7、对于一端游动一端作双向固定的轴，其游动端通常采用轴承。三、问答题

1、在机械设备中为何广泛采用滚动轴承？ 2、向心角接触轴承为什么要成对使用、反向安装？

lay levels cadres in enterprise development in the of backbone backbone role; to full strengthening members youth work, full play youth employees in company development in the of force role; to improve independent Commission against corruption work level, strengthening on enterprise business key link of effectiveness monitored. , And maintain stability. To further strengthen publicity and education, improve the overall legal system. We must strengthen safety management, establish and improve the education, supervision, and evaluation as one of the traffic safety management mechanism. o conscientiously sum up the Olympic security controls, promoting integrated management to a higher level, higher standards, a higher level of development. Employees, today is lunar calendar on December 24, the ox Bell is about to ring, at this time of year, we clearly feel the pulse of the XX power generation company to flourish, to more clearly hear XX power generation companiemature and symmetry breathing. Recalling past one another across a railing, we are enthusiastic and full of confidence. Future development opportunities, we more exciting fight more spirited. Employees, let us together across 2013 full of challenges and opportunities, to create a green, low-cost operation, full of humane care of a world-class power generation company and work hard! The occasion of the Spring Festival, my sincere wish that you and the families of the staff in the new year, good health, happy, happy!We will continue to improve the company's internal control system, and steady improvement in ability to manage and control, optimize business processes, to ensure smooth processes, responsibilities in place; to further strengthen internal controls, play a control post independent oversight role of evaluation complying with third-party responsibility; to actively make use of internal audit tools detect potential management, streamline, standardize related transactions, strengthening operations in accordance with law. Deepening the information management to ensure full communication \o constantly perfect ERP, and BFS++, and PI, and MIS, and SCM, information system based construction, full integration information system, achieved information resources shared; to expand Portal system application of breadth and depth, play information system on enterprise of Assistant role; to perfect daily run maintenance operation of records, promote problem reasons analysis and system handover; to strengthening BFS++, and ERP, and SCM, technology application of training, improve employees application information system of capacity and level. Humanistic care to ensure \To strengthening Humanities care, continues to foster company wind clear, and gas are, and heart Shun of culture atmosphere; strengthening love helped trapped, care difficult employees; carried out style activities, rich employees life; strengthening health and labour protection, organization career health medical, control career against; continues to implementation psychological warning prevention system, training employees health of character, and stable of mood and enterprising of attitude, created friendly fraternity of Humanities environment. To strengthen risk management, ensure that the business of \o strengthened business plans management, will business business plans cover to all level, ensure the business can control in control; to close concern financial, and coal electric linkage, and energy-saving scheduling, national policy trends, strengthening track, active should; to implementation State-owned assets method, further specification business financial management; to perfect risk tube control system, achieved risk recognition, and measure, and assessment, and report, and control feedback of closed ring management, improve risk prevention capacity. o further standardize trading, and strive to achieve \ng to law, standardize and fair.\of performance management, to ensure that potential employees \o strenghen performance management, process control, enhance employee evaluation and levels of effective communication to improve performance management. To further quantify and refine employee standards ... Work, full play party, and branch, and members in \prise\n the of core role, and fighting fortress role and pioneer model role; to continues to strengthening \good\dership construction 3、为何调心轴承要成对使用，并安装在两个支点上？

4、进行轴承组合设计时，两支点的受力不同，有时相差还较大，为何又常选用尺寸相同的轴承？

5、推力球轴承为何不宜用于高速？

6、以径向接触轴承为例，说明轴承内、外圈为何采用松紧不同的配合。

7、为什么轴承采用脂润滑时，润滑脂不能充满整个轴承空间？采用浸油润滑时，油面不能超过最低滚动体的中心？

8、轴承为什么要进行极限转速计算？计算条件是什么？

9、下图所示的简支梁与悬臂梁用圆锥滚子轴承支承，试分析正装和反装对轴系的刚度有何影响。

题3-9图

10、从支承刚性、受热变形、套筒的制造工艺性、装拆和调整的方便性四个方面评价下列两种支承结构方案的优劣。

（a）

（b）

11、负荷一定的7305C轴承，当工作转速n（r/min）降低为n/2（r/min）时，其寿命L（r)及Lh（h）是否有变化？若有，变化多大？

四、分析计算题

2、某6310滚动轴承的工作条件为：径向力Fr=10 000N，转速n=300r/min，轻度冲击（fp=1.35），脂润滑，预期寿命为2 000h。验算轴承强度。

3、某6308轴承工作情况如下表，设每天工作8h，试问轴承能工作几年（每年按300天计算）？

工作时间b/（%） 30 15 55 注：有轻度冲击（fp=1.2）。 4、某蜗杆轴转速n=1 440r/min，间歇工作，有轻微振动，fp=1.2，常温工作。采用一端固定（一对7209C型轴承正安装），一端游动（一个6209型轴承）支承。轴承的径向载荷Fr1=1 000N（固定端）、Fr2=450N（游动端），轴上的轴向载荷Fx=3 000N，要求蜗杆轴承寿命

径向载荷Fr/N 2 000 4 500 8 900 转速n/（r/min） 1 000 300 100 ?Lh≥2 500h。试校核固定端轴承是否满足寿命要求。

5、某传动轴上安装有一对角接触向心球轴承，两轴承分别承受径向载荷Fr1=1650N，Fr2=3500N，轴上作用的外加轴向载荷Fa=1020N，方向如图所示。

（1）、若内部轴向力的计算公式为Fd=0.7Fr，试计算两个轴承所受总轴向力Fa1、Fa2分别为多少？

（2）、已知e=0.65，当Fa/Fr≤e时,X=1,Y=0, 当Fa/Fr＞e时,X-0.42,Y=0.84，设温度系数fp=1，试计算两轴承的当量动载荷P1和P2。

五、结构题

1、分析轴系结构的错误，说明错误原因，并画出正确结构。

题5-1图

2、分析轴系结构的错误，说明错误原因，并画出正确结构。

lay levels cadres in enterprise development in the of backbone backbone role; to full strengthening members youth work, full play youth employees in company development in the of force role; to improve independent Commission against corruption work level, strengthening on enterprise business key link of effectiveness monitored. , And maintain stability. To further strengthen publicity and education, improve the overall legal system. We must strengthen safety management, establish and improve the education, supervision, and evaluation as one of the traffic safety management mechanism. o conscientiously sum up the Olympic security controls, promoting integrated management to a higher level, higher standards, a higher level of development. Employees, today is lunar calendar on December 24, the ox Bell is about to ring, at this time of year, we clearly feel the pulse of the XX power generation company to flourish, to more clearly hear XX power generation companiemature and symmetry breathing. Recalling past one another across a railing, we are enthusiastic and full of confidence. Future development opportunities, we more exciting fight more spirited. Employees, let us together across 2013 full of challenges and opportunities, to create a green, low-cost operation, full of humane care of a world-class power generation company and work hard! The occasion of the Spring Festival, my sincere wish that you and the families of the staff in the new year, good health, happy, happy!We will continue to improve the company's internal control system, and steady improvement in ability to manage and control, optimize business processes, to ensure smooth processes, responsibilities in place; to further strengthen internal controls, play a control post independent oversight role of evaluation complying with third-party responsibility; to actively make use of internal audit tools detect potential management, streamline, standardize related transactions, strengthening operations in accordance with law. Deepening the information management to ensure full communication \o constantly perfect ERP, and BFS++, and PI, and MIS, and SCM, information system based construction, full integration information system, achieved information resources shared; to expand Portal system application of breadth and depth, play information system on enterprise of Assistant role; to perfect daily run maintenance operation of records, promote problem reasons analysis and system handover; to strengthening BFS++, and ERP, and SCM, technology application of training, improve employees application information system of capacity and level. Humanistic care to ensure \To strengthening Humanities care, continues to foster company wind clear, and gas are, and heart Shun of culture atmosphere; strengthening love helped trapped, care difficult employees; carried out style activities, rich employees life; strengthening health and labour protection, organization career health medical, control career against; continues to implementation psychological warning prevention system, training employees health of character, and stable of mood and enterprising of attitude, created friendly fraternity of Humanities environment. To strengthen risk management, ensure that the business of \o strengthened business plans management, will business business plans cover to all level, ensure the business can control in control; to close concern financial, and coal electric linkage, and energy-saving scheduling, national policy trends, strengthening track, active should; to implementation State-owned assets method, further specification business financial management; to perfect risk tube control system, achieved risk recognition, and measure, and assessment, and report, and control feedback of closed ring management, improve risk prevention capacity. o further standardize trading, and strive to achieve \ng to law, standardize and fair.\of performance management, to ensure that potential employees \o strenghen performance management, process control, enhance employee evaluation and levels of effective communication to improve performance management. To further quantify and refine employee standards ... Work, full play party, and branch, and members in \prise\n the of core role, and fighting fortress role and pioneer model role; to continues to strengthening \good\dership construction

题5-2图

3、分析轴系结构的错误，说明错误原因，并画出正确结构。

题5-3图