I. Definition of Dimensional Inspection
Dimensional inspection is based on drawings and checks whether the product dimensions are within tolerance range to identify errors in shape and size. In addition, the accuracy of the machining reference surface position, the distribution of machining allowances, and wall thickness deviations should also be carefully checked.
II. Methods for Dimensional Inspection
The actual dimensions of a product are often indispensable, but due to the complexity of the object's shape or limitations imposed by objective physical conditions, they may be unavailable. Machine vision inspection technology can effectively address such problems. In traditional automated production, typical methods for dimensional inspection include using micrometers, vernier calipers, and feeler gauges. However, these measurement methods suffer from low accuracy and slow speed, failing to meet the demands of large-scale automated production. Machine vision-based dimensional inspection is a non-contact measurement method with advantages such as high accuracy, high speed, low cost, and easy installation. It can inspect various dimensions of parts, such as length, height, width, circle, angle, arc, concentricity, inner and outer diameters, weld area, number of teeth, and perpendicularity.
III. Application Scope of Dimension Inspection
Electronic components, automotive parts, mobile phone parts, screws and nuts, hardware, magnetic materials, composite material components such as plastics and ceramics, magnesium, aluminum and their alloys, etc.
IV. Dimensional Inspection Equipment
Using machine vision inspection technology to inspect product dimensions is currently the most advanced inspection technology. It is a non-contact measurement method that eliminates the risk of secondary damage to the product due to contact during inspection, resulting in more accurate and reliable inspection results.
There are many dimensional inspection devices on the market. Today, we'll take Dongguan Ruizhi Optoelectronics' dimensional inspection equipment as an example. Ruizhi Optoelectronics' dimensional inspection equipment is a non-contact optical vision automated inspection device that utilizes machine vision systems and machine vision inspection technology to perform various dimensional inspections on products. Examples include: glass plate image sorting machines, indexing plate image sorting machines, 360-degree dental defect sorting equipment, and CCD vision inspection equipment. Ruizhi Optoelectronics' dimensional inspection equipment achieves micron-level accuracy, is reliable, and has a zero false negative rate. Having accumulated a large customer base, our vision inspection equipment can not only inspect product dimensions but also detect product appearance defects. Both the mechanism and software are independently developed.
