【摘要】：剎車片背板的平面度誤差是衡量剎車片質(zhì)量的一項(xiàng)重要指標(biāo),然而目前大部分企業(yè)仍然采用人工手動(dòng)方式對出廠背板進(jìn)行檢測,不僅測量效率低,而且測量數(shù)據(jù)不可靠。本課題通過研發(fā)成本適當(dāng)、數(shù)據(jù)可靠、測量便捷的平面度誤差自動(dòng)檢測系統(tǒng),為企業(yè)提高產(chǎn)品質(zhì)量,打破國外產(chǎn)品市場壟斷提供技術(shù)支撐。通過對現(xiàn)有電測方案的分析,提出了高精度、高效率的群測方案對背板待測面進(jìn)行形貌提取,并通過實(shí)驗(yàn)完成對傳感器和測量平面的校準(zhǔn)。圍繞檢測方案設(shè)計(jì)了基于PLC控制的分料機(jī)構(gòu)、檢測機(jī)構(gòu)和分選機(jī)構(gòu),并詳細(xì)介紹了各機(jī)構(gòu)的工作原理和控制流程。在傳統(tǒng)凸包法計(jì)算平面度誤差的基礎(chǔ)上,結(jié)合測點(diǎn)空間分布特點(diǎn),提出了一種新的三維點(diǎn)集的凸包構(gòu)建方法。對獲取的三維數(shù)據(jù)進(jìn)行降維分析,以快速獲取初始凸包頂點(diǎn),并借鑒Quickhull算法思想,提高凸包構(gòu)建速度。結(jié)合測點(diǎn)分類法,提高平面度誤差計(jì)算效率。基于Qt開發(fā)框架完成檢測系統(tǒng)的上位機(jī)程序設(shè)計(jì),通過調(diào)用QSettings類實(shí)現(xiàn)配置文件的讀寫,調(diào)用QSerial Port類實(shí)現(xiàn)與PLC、傳感器等下位機(jī)的通信;利用第三方圖形庫QWT完成波形和直方圖的顯示;結(jié)合SQLite數(shù)據(jù)庫實(shí)現(xiàn)檢測數(shù)據(jù)的存儲(chǔ)、查詢和導(dǎo)出。分析了系統(tǒng)的單點(diǎn)測量誤差,結(jié)合平面度誤差計(jì)算方法,完成對系統(tǒng)測量精度的估算,通過重復(fù)實(shí)驗(yàn)得到系統(tǒng)相對于三坐標(biāo)測量機(jī)的示值誤差以及重復(fù)性,從而驗(yàn)證了該系統(tǒng)的可靠性。
[Abstract]:The flatness error of brake plate is an important index to measure the quality of brake pad. However, most enterprises still use manual method to detect the factory backplane, which is not only low efficiency, but also unreliable measurement data. This paper provides technical support for enterprises to improve product quality and break the monopoly of foreign product market through the research and development cost, reliable data, convenient measurement of flatness error automatic detection system. Based on the analysis of the existing electrical measurement schemes, a group measurement scheme with high precision and high efficiency is proposed to extract the surface of the backplane to be tested, and the sensor and the measuring plane are calibrated through experiments. The separation mechanism, detection mechanism and sorting mechanism based on PLC control are designed around the detection scheme, and the working principle and control flow of each mechanism are introduced in detail. On the basis of the traditional convex hull method to calculate the flatness error and combining the spatial distribution characteristics of the measured points, a new method for constructing the convex hull of the three-dimensional point set is proposed. In order to obtain the initial convex hull vertices quickly, the dimensionality reduction analysis of the acquired 3D data is carried out, and the construction speed of convex hull is improved by using the idea of Quickhull algorithm. The calculation efficiency of flatness error is improved by combining the method of measuring point classification. Based on the Qt development framework, the upper computer program of the detection system is designed, the configuration file is read and written by calling the QSettings class, and the communication between the QSerial Port class and the lower computer such as the PLC, sensor is realized by calling the QSerial Port class. The third party graphics library QWT is used to display the waveform and histogram, and the SQLite database is used to store, query and export the detection data. The single point measurement error of the system is analyzed, and the precision of the system is estimated by combining the flatness error calculation method. Through repeated experiments, the indication error and repeatability of the system relative to the CMM are obtained. The reliability of the system is verified.
【學(xué)位授予單位】：中國計(jì)量大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：U463.5;TP274

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 莫雨松;平板平面度誤差測量精度分析(續(xù))[J];實(shí)用測試技術(shù);2000年01期

2 杜茂華;用回歸分析法評(píng)定平面度誤差[J];機(jī)械;2001年02期

3 薛小強(qiáng);平面度誤差的精確最小域解[J];機(jī)械設(shè)計(jì)與制造工程;2002年05期

4 王萍,謝馳,廖世鵬;小零件平面度誤差測量的一種新方法[J];工具技術(shù);2004年06期

5 李曉飛;張鐳;李會(huì)武;;幾種平面度誤差分離方法的分析[J];宇航計(jì)測技術(shù);2006年02期

6 程飛月;;幾種評(píng)定平面度誤差的計(jì)算方法[J];機(jī)械工程師;2006年07期

7 程飛月;;幾種評(píng)定平面度誤差的計(jì)算方法[J];試驗(yàn)技術(shù)與試驗(yàn)機(jī);2006年02期

8 隋文濤;張丹;;評(píng)定平面度誤差的算法與實(shí)現(xiàn)[J];機(jī)械工程與自動(dòng)化;2006年05期

9 慶科維;張琳娜;孫利平;趙鳳霞;;新一代GPS操作技術(shù)在平面度誤差評(píng)定中的應(yīng)用[J];制造技術(shù)與機(jī)床;2007年01期

10 武文革;成云平;龐學(xué)慧;;平面度誤差的測量及數(shù)據(jù)處理的教學(xué)體會(huì)[J];機(jī)械管理開發(fā);2009年04期

相關(guān)會(huì)議論文 前3條

1 杜茂華;范_g;;用回歸分析法評(píng)定平面度誤差的程序?qū)崿F(xiàn)[A];第一屆全國流體動(dòng)力及控制工程學(xué)術(shù)會(huì)議論文集（第二卷）[C];2000年

2 李秀明;;基于凸殼的圓導(dǎo)軌平面度誤差的評(píng)定[A];2008中國儀器儀表與測控技術(shù)進(jìn)展大會(huì)論文集（Ⅲ）[C];2008年

3 姚旭峰;杜世昌;費(fèi)蘭;奚立峰;;基于克里金方法的平面建模和誤差預(yù)測[A];使命與責(zé)任—以質(zhì)量方法促轉(zhuǎn)型升級(jí)——第五屆中國質(zhì)量學(xué)術(shù)與創(chuàng)新論壇論文集（上）[C];2012年

相關(guān)博士學(xué)位論文 前1條

1 姜焰鳴;多測點(diǎn)平面度誤差智能評(píng)定與不確定度分析方法研究[D];華南理工大學(xué);2012年

相關(guān)碩士學(xué)位論文 前5條

1 關(guān)鵬;回轉(zhuǎn)體端面平面度誤差測量理論研究[D];東北大學(xué);2009年

2 張豪;平面度誤差數(shù)字化檢測與評(píng)定算法研究[D];湖南大學(xué);2016年

3 柴光耀;剎車片背板平面度誤差自動(dòng)檢測系統(tǒng)的研制[D];中國計(jì)量大學(xué);2016年

4 李飛;平面度誤差的幾何搜索評(píng)定算法[D];河南科技大學(xué);2013年

5 孫衛(wèi)家;大工件平面度檢測技術(shù)研究[D];長春理工大學(xué);2003年

，

本文編號(hào)：2314553