共查询到19条相似文献,搜索用时 140 毫秒
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一、概述 目前,国内外轮廓法触针式表面粗糙度测量仪按其传感器的类型和测量方法的不同,主要可以分为如下几种形式:按接触式测量方式工作的仪器有电感式表面粗糙度测量仪和压电式表面粗糙度测量仪,按非接触式测量方式工作的仪器有激光光触针式表面粗糙度测量仪等。我国在1985年参照国际标准ISO1880—1979《轮廓法表面粗糙度测量仪—接触(触针)式轮廓转换 相似文献
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本文研究的是一套通过干涉显微镜成像,利用CCD相机提取干涉条纹进行图像识别和处理,实现高精度工件表面粗糙度快速、非接触、自动化的检测系统。该系统在干涉显微镜的结构基础上,安装了CCD相机,将干涉图像采集到计算机中,然后对采集到的图像进行滤波、判别、二值化处理、提取边缘轮廓,并按照GB/T 1031-2009《产品几何技术规范(GPS)表面结构轮廓法表面粗糙度参数及其数值》的要求进行计算,得到被测工件的表面粗糙度。经实验验证,该检测系统满足Ra值(0.01~0.1)μm和Rz值(0.1~1.0)μm测量要求,适用于高精度工件的表面粗糙度测量。 相似文献
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磁盘表面粗糙度移相干涉测量仪的PZT驱动分析与设计 总被引:1,自引:0,他引:1
采用PZT振动产生移相,研制开发了可用于测量磁盘表面粗糙度的高精表面光学轮廓测量仪,本文在阐述系统工作原理之后,介绍其中的相移驱动装置的设计与实现。 相似文献
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表面统计粗糙度理论与评定方法 总被引:2,自引:0,他引:2
本文对表面粗糙度研究的现状和存在的问题进行了分析,提出了表面统计粗糙度SSR的新概念,给出了它的评定参数和相应的评定方法。由SSR的基本评定参数FEP(表面轮廓模型参数α)可确定任何一种评定参数及其关系。本文还建立了表面轮廓和分离表面轮廓测量干扰及仪器误差的数学模型。通过一系列的试验和计算机上的计算,证明本文所提出的理论和方法是正确的。 相似文献
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2.用触针式粗糙度仪测量的要点当前国内外应用最广泛、占主导地位的表面粗糙度测量仪器是触针式粗糙度测量仪。是用一个很尖的触外压在被测表面上作横移扫描,触针将跟随表面轮廓波形的起伏作垂直位移,并转换为电参量信号,经放大、滤波和运算处理,给出表面粗糙度的某些参数值,亦能给出截面轮廓曲线图形。引入计算机技术使仪器的功能有明显提高。主要表现在能给出众多的粗糙度表征参数和波纹度的参数,一些测量条件可以在较宽的范围内选择,甚至可以自行编制一系列测量程序随时调用,条件确定后实现自动操作等等。使用时,测量的基本条… 相似文献
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The design and properties of an optical probe for on-line measurement of surface roughness are discussed. Based on light scattering, a probe that consists of a laser diode, a measuring lens, and a linear photodiode array was designed to detect surface roughness, in which the light scattered from a test surface at a relatively large scattering angle phi (=28 degrees) can be collected to enhance measuring range and repeatability. A coaxial design that incorporates a dual-laser probe and compressed air makes the proposed system insensitive to the position of the test surface and to surface conditions such as the presence of debris, vibration, and lubricants that result from machining. The results from measurements of several sets of specimens have demonstrated the feasibility of measuring surface roughness by using light scattering. On-line measurement on a diamond-turning lathe has shown that the proposed technique is stable and compact enough to be applicable to on-line measurement of surface roughness of an engineering surface. 相似文献
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航空发动机叶片表面弯扭大,加工过程中难以保证表面粗糙度一致。针对现阶段粗糙度测量方法在测量叶片时缺少测量位置和方向的定义,导致测得的粗糙度值无法判定叶片粗糙度合格性的问题,开展了叶片粗糙度测量方法研究。基于叶片实测截面数据,利用坐标测量机上搭载的粗糙度测头,通过对不同类型的叶片进行多位置多方向的粗糙度测量实验,分析不同位置、不同方向的粗糙度测量结果差异,得到了叶片粗糙度测量方法。本方法将叶片粗糙度与叶片型面相关联,解决了叶片粗糙度的测量位置和测量方向缺乏规范的问题。研究结果对准确、有效、规范地评估叶片表面质量的合格性具有重要意义。 相似文献
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A precise measuring method for detecting the in situ distortion profile of a high-heat-load mirror for synchrotron radiation by use of a pentaprism long trace profiler (LTP) is presented. A maximum distortion of 0.47 microm across a length of 180 mm was measured for an internally water-cooled mirror on an undulator beam line at ELETTRA while exposed to a total emitted power of 600 W. This first successfully tested in situ distortion profile points out the importance and need for this method. Two configurations for performing in situ LTP tests are discussed. For this measurement the configuration with all the equipment external to the vacuum chamber was used. The experiment has an accuracy and a repeatability of 0.04 microm. Suggestions for improving the accuracy and stability are presented. 相似文献
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文章结合大量企业实例,阐述了计控一体化、加强计量管理对于建立现代企业制度、提高企业经济效益的重要性。首次提出了计量功能全程化、管理体系科学化、运作综合化、手段现代化的企业计量工作“四化”目标。 相似文献
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Surface quality is one of the most important parameters in mechanical treatment. In recent years a great number of contact and non-contact surface quality measurement methods have been created. This article covers a non-contact laser method of surface parameter evaluation, intended for the evaluation of the surface quality of an angle encoder disk. For such a measurement, this paper proposes using a conventional compact disc laser-reading unit. The proposed system is relatively simple and inexpensive. The device allows measuring unevenness in the surface thickness of an encoder disk, as well as its surface roughness and profile details. The structure of the measurement system, the static and dynamic calibration results and the experimental surface measurement results for an angle encoder disc are presented. 相似文献