影像測量儀在模具行業的應用

影像測量儀是一種新型的精密幾何測量儀器。 隨著技術的發展，它已成為精密幾何測量中最常用的測量儀器之一。 圖像測量儀利用圖像探頭采集工件的圖像，通過數字圖像處理技術提取各種復雜形狀工件表面的坐標點，再利用坐標變換和數據處理技術轉換成各種幾何元素 在坐標測量空間。 從而可以計算出待測工件的實際尺寸、形狀和相互位置關系。

        經過不斷的發展，影像測量儀的應用范圍不斷擴大，可以準確測量各種復雜的工件輪廓和表面形狀。 目前，影像測量儀的測量對象包括電子零件、精密模具、沖壓件、PCB板、螺紋、齒輪、成型工具等工件，并逐步進入電子、機械、儀表、鐘表、輕工、國家 國防軍工、航空航天等行業已成為高等院校、科研院所、計量技術機構的實驗室、計量室和生產車間常用的精密測量儀器。 今天我們主要討論影像測量儀在模具行業的應用。

       模具測量的范圍非常廣泛，包括模型測繪、模具設計、模具加工、模具驗收、修模后檢驗、模具成型產品批量檢驗等諸多領域。 每個領域都需要高精度的尺寸測量，包括距離、角度、高度、孔徑、圓弧半徑、曲面等幾何量，以及圓度、直線度、平面度、垂直度、平行度、同軸度等幾何公差。 另一方面，各個領域的測量要求也不同。 最典型的就是模塑制品的模型測繪批檢：模型測繪涉及到尺寸的綜合測量，對測量效率要求不高，對儀器功能要求高。 成型品的批量檢測對測量效率的要求非常高。

       傳統的接觸式三坐標測量機、關節臂測量機、大尺寸激光跟蹤儀等儀器也廣泛應用于模具測量領域。  ，沒有好的解決辦法。 借助CCD面陣傳感器和非接觸式測量的特點，影像測量儀可以高效完成無法接觸、易變形、外形小巧的工件，在這方面具有絕對優勢。

        在逆向工程領域映射模具時，為了快速掃描曲面，需要昂貴的掃描探頭或激光掃描探頭。 鑫天光電銷售的影像測量儀具有自動輪廓掃描功能，可以獲取同一輪廓上所有點的坐標，從而獲得工件的輪廓圖。 自動輪廓掃描功能操作簡單，效率很高。 操作者只要指定掃描開始和結束位置，機器就會自動搜索掃描方向，移動工作臺，獲取點集的坐標，快速獲取工件的輪廓。 經濟高效的解決方案。

       模具成型零件的特點是量大、計量效率要求高。 傳統的接觸式三坐標雖然具有自動測量的功能，但效率遠遠不能滿足批量測量的要求。 新天光電提供的圖像測量儀采用CCD采集圖像進行測量。  CCD是一種面陣傳感器，可以一次獲取一個區域的圖像。 對于幾何量的測量，測量效率遠高于接觸式三坐標。 借助二維測量軟件的圖元復制、多坐標系、報表定制輸出等功能，可以快速構建測量程序，高效獲取所需數據。

       影像測量儀以其非接觸式、高效率、高性價比的優勢，日益成為模具行業重要的測量工具。

Image measuring instrument is a new type of precision geometric measuring instrument.  With the development of technology, it has become one of the most commonly used measurement instruments in precision geometric measurement.  The image measuring instrument uses the image probe to collect the image of the workpiece, extracts the coordinate points on the surface of the workpiece with various complex shapes through the digital image processing technology, and then converts them into various geometric elements in the coordinate measuring space by using the coordinate transformation and data processing technology.  The actual size, shape and position of the workpiece can be calculated.  

After continuous development, the scope of application of image measuring instrument is expanding, it can accurately measure various complex workpiece contour and surface shape.  At present, the measurement objects of the image measuring instrument include electronic parts, precision molds, stamping parts, PCB boards, threads, gears, forming tools and other workpiece.  And gradually into electronics, machinery, instrumentation, clocks and watches, light industry, national defense military industry, aerospace and other industries has become colleges and universities, scientific research institutes, measurement technology institutions of laboratories, measuring rooms and production workshops commonly used precision measuring instruments.  Today we mainly discuss the application of image measuring instrument in mould industry.  

The scope of mold measurement is very wide, including model mapping, mold design, mold processing, mold acceptance, mold repair inspection, mold molding products batch inspection and many other fields.  Every field requires high-precision dimensional measurement, including geometric quantities such as distance, Angle, height, aperture, radius of arc and surface, as well as geometric tolerances such as roundness, straightness, flatness, verticality, parallelism and coaxiality.  On the other hand, measurement requirements vary from field to field.  The most typical is the model mapping inspection of molded products: model mapping involves comprehensive measurement of size, low requirements for measurement efficiency and high requirements for instrument function.  The batch inspection of molding products requires very high measurement efficiency.  

Traditional contact CMM, joint arm measuring machine, large size laser tracker and other instruments are also widely used in the field of mold measurement.  There is no good solution.  With the CCD array sensor and the characteristics of non-contact measurement, image measuring instrument can efficiently complete the workpiece that can not be contacted, easy to deformation, small shape, and has absolute advantages in this respect.  

When mapping molds in reverse engineering, expensive scanning probes or laser scanning probes are needed to quickly scan surfaces.  The image measuring instrument sold by Xintian photoelectric has the function of automatic contour scanning, which can obtain the coordinates of all points on the same contour, so as to obtain the contour map of the workpiece.  The automatic contour scan function is simple and efficient.  As long as the operator specifies the starting and ending positions of the scan, the machine will automatically search the scanning direction, move the workbench, obtain the coordinates of the point set, and quickly obtain the contour of the workpiece.  Cost effective solution.  

The characteristics of mold forming parts are large quantity, high measurement efficiency requirements.  Although the traditional contact CMM has the function of automatic measurement, its efficiency is far from meeting the requirements of batch measurement.  The image measuring instrument provided by Xintian Photoelectric uses CCD to collect images for measurement.  CCD is a planar array sensor that can capture images of one area at a time.  For the measurement of geometric quantity, the measurement efficiency is much higher than contact CMM.  With the help of the functions of 2d measurement software such as pixel duplication, multi-coordinate system and report form customization output, the measurement program can be constructed quickly and the required data can be obtained efficiently.  

Image measuring instrument with its non-contact, high efficiency, high cost performance advantages, increasingly become an important tool for mold industry measurement.