影像测量仪在模具行业的应用

影像测量仪是一种新型的精密几何测量仪器。 随着技术的发展，它已成为精密几何测量中最常用的测量仪器之一。 图像测量仪利用图像探头采集工件的图像，通过数字图像处理技术提取各种复杂形状工件表面的坐标点，再利用坐标变换和数据处理技术转换成各种几何元素 在坐标测量空间。 从而可以计算出待测工件的实际尺寸、形状和相互位置关系。

        经过不断的发展，影像测量仪的应用范围不断扩大，可以准确测量各种复杂的工件轮廓和表面形状。 目前，影像测量仪的测量对象包括电子零件、精密模具、冲压件、PCB板、螺纹、齿轮、成型工具等工件，并逐步进入电子、机械、仪表、钟表、轻工、国家 国防军工、航空航天等行业已成为高等院校、科研院所、计量技术机构的实验室、计量室和生产车间常用的精密测量仪器。 今天我们主要讨论影像测量仪在模具行业的应用。

       模具测量的范围非常广泛，包括模型测绘、模具设计、模具加工、模具验收、修模后检验、模具成型产品批量检验等诸多领域。 每个领域都需要高精度的尺寸测量，包括距离、角度、高度、孔径、圆弧半径、曲面等几何量，以及圆度、直线度、平面度、垂直度、平行度、同轴度等几何公差。 另一方面，各个领域的测量要求也不同。 最典型的就是模塑制品的模型测绘批检：模型测绘涉及到尺寸的综合测量，对测量效率要求不高，对仪器功能要求高。 成型品的批量检测对测量效率的要求非常高。

       传统的接触式三坐标测量机、关节臂测量机、大尺寸激光跟踪仪等仪器也广泛应用于模具测量领域。  ，没有好的解决办法。 借助CCD面阵传感器和非接触式测量的特点，影像测量仪可以高效完成无法接触、易变形、外形小巧的工件，在这方面具有绝对优势。

        在逆向工程领域映射模具时，为了快速扫描曲面，需要昂贵的扫描探头或激光扫描探头。 鑫天光电销售的影像测量仪具有自动轮廓扫描功能，可以获取同一轮廓上所有点的坐标，从而获得工件的轮廓图。 自动轮廓扫描功能操作简单，效率很高。 操作者只要指定扫描开始和结束位置，机器就会自动搜索扫描方向，移动工作台，获取点集的坐标，快速获取工件的轮廓。 经济高效的解决方案。

       模具成型零件的特点是量大、计量效率要求高。 传统的接触式三坐标虽然具有自动测量的功能，但效率远远不能满足批量测量的要求。 新天光电提供的图像测量仪采用CCD采集图像进行测量。  CCD是一种面阵传感器，可以一次获取一个区域的图像。 对于几何量的测量，测量效率远高于接触式三坐标。 借助二维测量软件的图元复制、多坐标系、报表定制输出等功能，可以快速构建测量程序，高效获取所需数据。

       影像测量仪以其非接触式、高效率、高性价比的优势，日益成为模具行业重要的测量工具。

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.