共查询到20条相似文献,搜索用时 78 毫秒
1.
2.
3.
EXCEL在机械零件设计中的应用 总被引:3,自引:0,他引:3
在机械零件设计中,运用EXCEL是提高其设计速度和质量的可行办法,通过对EXECL在机械零件设计中的应用举例,阐明了Excel在机械零件设计中的应用潜力。 相似文献
4.
5.
7.
韩风麟高级工程师编著的《粉末冶金机械零件》即将出版。这部八十万字的专著,主要是为粉末冶金机械零件用户的工程设计人员编写的。国内外粉末冶金专著已经不少,而且新著陆续不断出现,但是关于粉末冶金机械零件设计的专著,似乎还没有见到。苏联所著一书(1980 相似文献
8.
本文指出,我国粉末冶金机械零件工业已发展到新阶段,行业的工艺装备水平和产品水平有明显提高,10年来净产值全员劳动生产率指标提高了4倍,年人均利税指标提高了5倍多,企业经济规模化已逐渐形成;金属粉末行业和专用设备行业的发展为粉末冶金机械零件工业振兴提供了有利条件;汽车工业发展是粉末冶金机械零件工业振兴的主要动力。并对如何抓住契机,振兴我国粉末冶金机械零件工业,提出了几点建议。 相似文献
9.
粉末冶金新技术的出现使得机械零件特别是汽车零件的制造加工变得更加高效节能。粉末冶金汽车机械零件的批量应用,对粉末冶金零件质量保障及易出现缺陷的无损检验提出了更高的要求。文章结合生产实际对粉末冶金机械零件的无损检测方法进行了分析和探讨,期望为粉末冶金同行提供借鉴。 相似文献
10.
11.
12.
基于学生创新素质培养的机械原理课程案例教学研究 总被引:1,自引:0,他引:1
在机械原理课程教学中,不仅要传授机械的知识,更要注重培养学生的创新思维。从理论和实践的角度探讨了如何在机械原理教学中恰当地运用案例教学法,以激起学生的学习兴趣,培养学生的创新能力。 相似文献
13.
Characteristics and reproducibility of bulbocavernosus reflex (BCR) and pudendal somatosensory evoked potentials (PSEP) elicited by mechanical stimulation in children were tested. Twenty-five male children aged 5-14 years without uroneurological complaints were enrolled in the study. In addition to electrical stimulation, a specially constructed electromechanical hammer triggered by an oscilloscope was used for mechanical stimulation of distal penis. All responses were detected by surface electrodes. The latencies and amplitudes of averaged as well as latencies of single BCR on single and double electrical stimuli were determined. Mechanical stimulation was described as much less unpleasant than electrical stimulation. Both mechanical/electrical stimulation elicited consistent and reproducible responses in high percentages of children (BCR: average, 80%/71%, single, 94%/100%; PSEP: 96%/96%, respectively). BCR latencies were significantly longer and PSEP amplitudes were significantly higher on mechanical stimulation. The compliance with mechanical was much better than with the electrical stimulation and the former can be recommended for clinical use. The effective mechanical stimulus delivered by a particular mechanical stimulator has a characteristic 'delay' (as to the actual point of triggering the oscilloscope ray) which influences the latency reading of responses; appropriate control data are therefore necessary. 相似文献
14.
针对卷取机关键零件在设计时繁冗复杂的力学校核工作,以ANSYS分析软件的APDL语言为基础,VB为开发工具设计了力学分析程序,实现了ANSYS三维模型的自动建立、网格的自动划分、约束与载荷的自动加载以及力学分析结果的输出,大大提高了该类产品的设计校核效率。 相似文献
15.
铜合金具有良好的导电性和导热性,进一步提升铜合金力学性能可扩展其应用领域。通过机械表面处理在铜合金内构筑梯度纳米晶结构能在无合金元素添加的条件下,大幅提升铜合金强度-塑性匹配、抗疲劳等性能,具有工程应用潜力。本文首先综述了国内外制备梯度纳米晶结构铜合金常用的机械表面处理技术;其次,分析了机械表面处理对铜合金强度-塑性匹配性、疲劳性能和耐腐蚀性能的影响,并系统阐述了梯度纳米晶结构铜合金组织稳定性的调控方法;最后,总结了机械表面处理铜合金研究领域的发展趋势及面临的挑战。 相似文献
16.
文章研究了Q345B连铸坯低倍组织、碳偏析和钢板常规力学性能,从而找出Q345B连铸坯低倍组织对钢板常规性能的影响,为中厚板连铸坯轧制成的钢板力学性能预测提供依据。 相似文献
17.
The influences of mechanical force during physical exercise on blood coagulation and fibrinolysis were investigated and the effects of sports equipment, especially shoes were also examined. As an experimental model, local mechanical vibration was applied to the palm of the hand. General coagulation parameters did not change, but fibrinolytic activity was elevated due to the tissue plasminogen activator (t-PA) released from vascular endothelial cells stimulated by vibration. The influence of mechanical stimulation by repeated side-jumping with bare feet was examined on the sole of the foot. As with t-PA, the von Willebrand Factor antigen (vWF:Ag) derived from vascular endothelial cells also tended to increase, but not as much as when wearing sports shoes. Sports shoes protected the blood vessels of the feet from damage by mechanical force during physical exercise. Changes in fibrinolytic activity and t-PA could be useful for assessing local mechanical stimulation during physical exercise and also as indexes for the development of new sports equipment and its improvement. 相似文献
18.
19.
文章通过对非接触测量技术基本概念,方法及原理的介绍,表述该技术在机械制造业中较之传统机械检测特别是对于微小机械尺寸、大型机械尺寸、复杂机械的结构尺寸和异形机械曲面尺寸检测中具有明显的优点,阐明了非接触测量技术在机械零件检测上应用的可行性和必要性。 相似文献
20.
65Mn经热处理后综合力学性能优越,其冷轧钢带用途广泛,可制造弹簧、锯片等。为确定65Mn冷轧宽钢带力学性能随冷轧总变形率变化的规律,对经过不同程度的冷轧后的65Mn冷轧硬态及退火态宽钢带的力学性能进行了研究,研究得出的规律可用于对65Mn冷轧宽钢带力学性能进行预测及指导生产实践。采用65Mn原料经预退火后再进行冷轧的工艺生产的退火宽钢带力学性能稳定,塑性较好。 相似文献