普通螺(luo)紋(wen)有粗牙(ya)和細牙(ya)之分(fen)，同一公(gong)稱(cheng)(cheng)直徑可以有多種(zhong)螺(luo)距，其中大螺(luo)距者(zhe)稱(cheng)(cheng)為粗牙(ya)螺(luo)紋(wen)，其余(yu)均為細牙(ya)螺(luo)紋(wen)。
粗牙螺(luo)紋可以理解為，當(dang)螺(luo)紋規格確定時(shi)，螺(luo)距P選取允(yun)許的(de)大值時(shi)的(de)螺(luo)紋。
例如 ，M12規格的螺(luo)(luo)紋，螺(luo)(luo)距可(ke)以選擇(ze)1.75、1.5和1。M12×1.75即(ji)為(wei)粗牙螺(luo)(luo)紋，M12×1.5 、M12×1即(ji)為(wei)細牙螺(luo)(luo)紋。對(dui)于(yu)粗牙螺(luo)(luo)紋，可(ke)以省略標注其螺(luo)(luo)距項。(此例均為(wei)公制(zhi)螺(luo)(luo)紋)。
檢(jian)測(ce)系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong) ①硬件系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong) 螺(luo)紋(wen)(wen)參(can)(can)(can)數(shu)自(zi)動檢(jian)測(ce)系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong)基于PC架構，主要(yao)由照明系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong)、CCD相機和光路(lu)成(cheng) 像(xiang)(xiang)系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong)、圖(tu)(tu)像(xiang)(xiang)采集(ji)卡(ka)、圖(tu)(tu)像(xiang)(xiang)處(chu)理系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong)、機械(xie)檢(jian)測(ce)系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong)以(yi)及(ji)電控系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong)等組成(cheng)。 測(ce)量(liang)時，經照明系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong)照明后(hou)，通(tong)過CCD相機和光路(lu)成(cheng)像(xiang)(xiang)系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong)采集(ji)緊固件的(de)(de)(de)螺(luo)紋(wen)(wen)圖(tu)(tu)像(xiang)(xiang)， 然后(hou)經過圖(tu)(tu)像(xiang)(xiang)采集(ji)卡(ka)，將(jiang)數(shu)字(zi)化圖(tu)(tu)像(xiang)(xiang)傳到(dao)計(ji)算(suan)(suan)機，計(ji)算(suan)(suan)機對該數(shu)字(zi)圖(tu)(tu)像(xiang)(xiang)按相應算(suan)(suan)法(fa)(fa)處(chu) 理后(hou)，計(ji)算(suan)(suan)出(chu)螺(luo)紋(wen)(wen)的(de)(de)(de)牙型(xing)角、螺(luo)距(ju)和中徑等參(can)(can)(can)數(shu)，并與標準進行比較(jiao)，計(ji)算(suan)(suan)出(chu)偏差。 ②軟(ruan)件系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong) 螺(luo)紋(wen)(wen)參(can)(can)(can)數(shu)自(zi)動檢(jian)測(ce)的(de)(de)(de)軟(ruan)件系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong)主要(yao)包括(kuo)系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong)控制模塊(kuai) 圖(tu)(tu)像(xiang)(xiang)處(chu)理模塊(kuai)等。 系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong)控制模塊(kuai)：初(chu)始(shi)(shi)化;完(wan)成(cheng)系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong)圖(tu)(tu)像(xiang)(xiang)接口卡(ka)及(ji)標準參(can)(can)(can)數(shu)的(de)(de)(de)初(chu)始(shi)(shi)化配置(zhi)。圖(tu)(tu)像(xiang)(xiang)操作; 采集(ji)并保(bao)存(cun)8位的(de)(de)(de)灰色圖(tu)(tu)像(xiang)(xiang)，捕獲圖(tu)(tu)像(xiang)(xiang)到(dao)內存(cun)。 圖(tu)(tu)像(xiang)(xiang)處(chu)理模塊(kuai)：圖(tu)(tu)像(xiang)(xiang)處(chu)理模塊(kuai)包括(kuo)減少噪(zao)聲、突出(chu)螺(luo)紋(wen)(wen)輪廓邊(bian)(bian)緣(yuan)信息(xi)的(de)(de)(de)圖(tu)(tu)像(xiang)(xiang)預處(chu)理算(suan)(suan) 法(fa)(fa)，檢(jian)測(ce)和提取輪廓邊(bian)(bian)緣(yuan)信息(xi)的(de)(de)(de)邊(bian)(bian)緣(yuan)檢(jian)測(ce)和提取算(suan)(suan)法(fa)(fa)，測(ce)量(liang)數(shu)字(zi)圖(tu)(tu)像(xiang)(xiang)實際尺寸的(de)(de)(de)系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong) 標定算(suan)(suan)法(fa)(fa)，以(yi)及(ji)用于計(ji)算(suan)(suan)螺(luo)紋(wen)(wen)參(can)(can)(can)數(shu)的(de)(de)(de)算(suan)(suan)法(fa)(fa)等。
在線客服
