共查询到20条相似文献,搜索用时 93 毫秒
1.
螺旋锥齿轮的现场测绘是难于处理的一项技术工作。为使技术人员能熟练掌握螺旋锥齿轮现场测绘的基本技能,本文对螺旋锥齿轮现场测绘的基本要领、测绘内容及计算方法等做了论述。 相似文献
2.
本文通过对大型护套与破碎圆锥测绘方法的举例说明,阐述了一种大型铸造件简易实用的现场测绘方法和工作思路。 相似文献
3.
损坏的斜齿圆柱齿轮的现场测绘存在螺旋角度测量不准确的问题,分析了运用压痕测量及铣床搭配挂轮法、模数公式、中心距等计算方法来精确地确定普通或变位斜齿轮螺旋角。并对各种方法的运用效果进行总结,对测绘人员运用选择方法有具体的参考意义。 相似文献
4.
对多年以来测绘过的设备零部件进行统计分析,轴类零件损坏测绘的数量占到了相当大的一部分,因此做好轴类零件的测绘工作是一项比较重要的基础工作。轴类零件的测绘看似比较简单,但是公差配合选择不当、粗糙度标注不当、重要尺寸标注不清、测绘尺寸超差等,这样加工出来的产品达不到设备的使用要求,影响设备检修和运转。轴类零件的测绘需要理论结合实际,不但现场测绘要仔细,还要查询相关的设计手册,确定其中的几个关键部位尺寸。本文介绍了测绘工具的准备、重要尺寸的分析、草图的绘制、电脑图的绘制、定稿图的细节处理、测绘注意事项及测绘实例等,对轴类零件测绘做出了一个比较全面的阐述。 相似文献
5.
斜齿圆柱齿轮的现场测绘存在着螺旋角度测量不准确的问题,文章介绍了利用机床对斜齿轮螺旋角进行测量、计算、由此精确确定斜齿轮螺旋角的方法。 相似文献
6.
7.
一种三线阵测绘相机CCD像面的装调方法 总被引:6,自引:0,他引:6
为了保证三线阵测绘相机装调后相机之间的空间位置关系,保证三线阵测绘相机应用时的测绘精度和图像质量,对三线阵测绘相机CCD像面的装调方法进行研究.首先,根据测绘精度和图像质量的要求,明确了三线阵测绘相机的装调指标.其次,确定了装调方案,对装调要点进行了叙述,为三线阵测绘相机的装调提供了一种装调方法.实际装调检测结果表明,应用该方法可以将相机之间空间位置关系安装到α≤3"、β≤5"、γ≤5".该方法可以满足三线阵测绘相机之间的空间位置关系装调,具有实际应用价值. 相似文献
8.
9.
10.
11.
In accordance with the measurement requirements of radar cross section(RCS) in the nonstandard outdoor field,a RCS measurement system based on hardware gating was designed.In this paper,firstly the principle of hardware gating based on pulse measurement was introduced.Subsequently,the scheme of RCS measurement system and the design of out-door environment were presented.In the end,measurement results in an outer field were demonstrated. 相似文献
12.
HALL漏磁探伤传感器的研制 总被引:3,自引:0,他引:3
基于HALL效应和电磁无损检测原理,对HALL漏磁探伤传感器的磁场信号形成与磁场信号测量进行了分析,在此基础上对传感器的整体结构设计进行了介绍。 相似文献
13.
A novel simultaneous measurement method for magnetic field and temperature is proposed based on the two-resonant peaks photonic crystal fiber Bragg grating (PCFBG) filled magnetic fluid. The measuring principles are introduced in detail and verified by experiments. Sensitivity coefficients were achieved theoretically and experimentally and found to be consistent. The errors of temperature and magnetic field sensitivities were indicated theoretically and experimentally. The measurement resolutions were given. The results show that the scheme is feasible. It solves the cross-sensitivity problem between temperature and magnetic field of the fiber grating sensor, realizes dual-parameter measurement using single fiber that reduces greatly the size of the sensing probe, and provides a new method for the two-parameter measurements. 相似文献
14.
15.
16.
17.
18.
19.
20.
Hu T Cui X Gao Y Han Y Liu C Liu B Liu H Ma Y Gao C 《The Review of scientific instruments》2010,81(11):115101
A method for in situ Hall effect measurement under high pressure was developed on a diamond anvil cell. The electrode was accurately integrated on one diamond anvil with regular shape. A uniform and strong magnetic field was introduced into the sample zone. The voltage errors brought by some negative effects during the measurement were well eliminated. The correction factor of the Hall coefficient, brought by the nonpoint contact between the electrode and the sample, was 4.51%. The measurement error of the magnetic field did not exceed 1%. The carrier character of ZnTe powders was studied up to 23 GPa. The evolution of conductivity with pressure was explained based on the variation of the carrier behavior. 相似文献