光學金屬絲直徑(或圓內徑)測量儀器

~Measurement of wire diameter
The change to the measurement of wire diameter is very simple.
A special wire holder can be mounted easily in the universal specimen holder of the DM 1.
An additional software procedure is specialized to the wire measurement. The wire is displayed on the computer screen as live image. So the wire can be optical inspected and the diameter is measured with highest accuracy

~The measurement is performed optically with image processing. The image of the measuring optics is transferred by a USB camera to the PC. The live image of the camera is shown on the PC monitor and evaluated by highly accurate image processing algorithms.

The DM 1 is equipped with 2 measuring optics, which are mounted together on the motorized focusing stage (z-stage). A software controlled autofocus procedure finds the smallest diameter of the drawing die cylinder. This ensures highest measuring accuracy and reproducibility.~The DM 1 serves for the automatic, software controlled measurement of the inside diameter of the cylinder of drawing dies and for the highly accurate measurement of the outside wire diameter. Additionally the roundness and the area of the die bore are measured.

~DM1 – 拉絲模內徑、金屬絲直徑測量顯微鏡
高精度拉絲模直徑,圓度和截面積測量儀器

DM1 作為一台軟體控制,全自動高精度測量儀器,其具備如下主要功能:
 
拉絲模內孔直徑
拉絲模內孔圓度
拉絲模內孔圓面積
金屬絲直徑*
 
* 需裝配額外的機械元件,並擴展軟體功能。
測量結構

金屬絲夾具在一個通用的樣品夾具上
DM1 的測量是基於光學測量原理,並通過影像處理完成的。被測量顯微鏡放大的圖像,會通過USB-攝像機和影像處理系統傳輸到電腦,再作為即時圖像被評估並顯示在螢幕上。
 
DM 1 標配兩個測量顯微鏡,並且固定在Z-軸上,由電機控制移動。每次測量,用戶都能夠自由選擇Z-軸上移動範圍,以便能快速找到圖像的位置。並且,通過選擇合適的步進長度,就能夠更加精確地檢測直徑數值。
 
檢測到的最小直徑,將作為拉絲模直徑的測量值輸出。整個測量過程由軟體控制,全自動進行,盡可能避免人為因素的干擾,同時提高了測量精度和可重複性。

測量過程
拉絲模被放置在樣品夾具中,並且通過XY-Table調整,使之大致位於顯微鏡的中心位置。然後,選擇合適倍數的顯微鏡,並移動到對焦面,找到拉絲模孔的視覺清晰圖像(手動初步對焦)。點選開始,系統會自動精准對焦,測量過程啟動。
 
當然,對於不同孔徑規格的拉絲模,或者同一孔徑拉絲模的多次測量,用戶還能制定列表,保存對應的對焦位置,以方便後續的測量。
 
最後,根據特殊的圖像規則,軟體會搜索拉絲模的最小直徑作為測量直徑,在螢幕顯示。用戶可自行選擇保存,或者重新測量。

金屬絲直徑測量
用於金屬絲的特殊夾具,可以裝配在通用的樣品夾上。再運用額外的軟體模組,便能執行精確的絲徑測量。而且,器械的更換也十分簡單,可以實現內徑和絲徑測量的反復切