The built-in SPC (statistical process control) function can read the specified measurement data after measurement, generate control charts such as X-R and Xm-R, and calculate the maximum value, minimum value, average value, standard deviation, offset value, Ca, Cp, Cpk and other statistical coefficients.
Almost all manufacturing companies cannot do without VMM.
VMM is widely used in mechanical equipment, CNC milling machine parts, CNC lathe parts, injection molds, injection molding, hardware parts, low-voltage electrical appliances, magnetic materials, precision hardware, precision stamping, connectors, robots, drones, computers, automotive parts, medical equipment, medical equipment, die-casting molds, die-casting parts, automotive component manufacturers, gears, car part manufacturers, injection mold inc, sheet metal parts factory, CNC machining parts factory, CNC turning factory, bearings, stamping parts, etc.
The full name of the three-dimensional measuring machine (CMM) is Coordinate Measuring Machine. The three-dimensional measuring machine (CMM) is an instrument that measures by taking three-dimensional points. It is also called a three-dimensional coordinate measuring machine or a three-dimensional coordinate measuring machine. Its main principle is to place the object to be measured in the three-dimensional measurement space, obtain the coordinate position of each measuring point on the object to be measured, and calculate the geometric size, shape and position of the object to be measured. Specifically, the three-dimensional measuring machine obtains the spatial point position of the measured geometric element by detecting the coordination of the sensor and the axis movement of the measurement space, and then completes the analysis and fitting of the measured points through mathematical calculations, and finally restores the measured geometric element, and calculates the deviation between it and the theoretical value, thereby completing the inspection of the measured parts. In addition, the three-dimensional measuring machine can also measure dimensional accuracy, positioning accuracy, geometric accuracy and contour accuracy. It is not only used for engineering development, drawing measurement, and quality inspection, but also can directly input the image of the measured object into the computer to digitize it, and generate a picture on the computer or display screen for the operator to compare the image and the image, so as to intuitively distinguish the possible deviations in the measurement results. Generally, the more complex or high-precision precision machining parts and precision plastic moulding parts will be measured with a three-dimensional measuring machine (CMM). There are also some data that must be measured with a three-dimensional measuring machine, such as the "position", "flatness" and "parallelism" of some customer-customized precision parts.
Differences between VMM and CMM
Differences in principle and function
VMM:
Principle: VMM captures images through CCD camera and then transfers them to computer for processing and measurement. It mainly performs two-dimensional measurement, i.e. measurement within one plane.
Function: It is suitable for two-dimensional plane measurement of thin-walled parts, LCD panels, plastic parts, etc., and can measure position, concentricity, straightness, contour, etc.
Three-dimensional measuring machine:
Principle: The three-dimensional measuring machine (coordinate measuring machine) moves on three mutually perpendicular guide rails and measures the coordinates (X, Y, Z) of each point of the workpiece through a probe or non-contact sensor. It performs three-dimensional space measurement.
Function: It is suitable for three-dimensional measurement of complex-shaped mechanical parts, free-form surfaces, etc., and can measure shape, size and form tolerance.
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