Vision Measurement Systems Manufacturers
Vision measurement systems manufacturers produce machines that use computer-based software to inspect and evaluate still or moving objects. Similar to optical comparators, these machines include a frame with a lens and detector that interprets light signals to calculate dimensions.
Distributor of standard & custom non-contact visual inspection & measurement systems. Features 2D manual & motorized microscopes from 0.2 to 7x magnification. Serves automotive, medical & aerospace industries.
Optical Comparators
A key feature of optical comparators is that only the light touches the part, reducing the “feel factor” that can easily lead to human error. They can also detect scratches, indentations and other surface defects, so they’re ideal for inspecting a range of parts in different industries including power and energy, automotive and aerospace.
A comparator uses a graticule to illuminate and transmit light that creates the measurement image projected onto the screen. These devices often have an internal edge-detection system, which reduces operator subjectivity and reliance on eyesight and experience.
Some comparators use Mylar overlays that are designed with a CAD system to give a quick Go/No Go reference for features such as splines. Other comparators, such as KEYENCE’s IM Series Instant Measurement system, offer the ability to import a digital version of the CAD model as a chart, eliminating the need for Mylar overlays. The system can then run the inspection automatically and save records of previous measurement results.
Non-Contact Measuring Machines
Non-contact optical systems have emerged to provide a modern alternative to touch probes, articulating arms and a host of other contact devices. The touchless devices capture data via laser scanning and triangulation instead of traversing the part point-to-point like mechanical probes.
While they can be less accurate than CMMs, this is generally not significant as the volume of data that they collect makes up for this. In addition, the ability to quickly set up and measure a flat surface in minutes without the need for powdering, preprogramming or transporting of the part is attractive to many applications.
These systems are generally used to inspect flat 2D parts and some boast being able to fully characterize (measure all print dimensions) such surfaces in seconds. This is particularly important for automotive and aerospace industries that push for full part-to-cad inspection. They are also a good choice for hard to reach parts with tiny features that may be difficult or impossible to measure with touch probes, structured light and CT scans.
Optical Inspection Systems
Designed for printed circuit board assembly (PCB), optical inspection systems are able to detect surface features like scratches, nodules and thinning solder as well as dimensional defects such as shorts and open circuits. They also check for components missing or misplaced on the PCB as well as correct placement and alignment of solder joints.
Using a computer with imaging software, vision measurement systems can take multiple images and stitch them together to form a 3D image of the part. To capture these images, the machine must have a frame or base with at least three axes that holds the part along with an objective lens and a detector.
The lens may be a single still camera or a series of cameras that provide better imaging and 3D capability. The sensor may be a charge-coupled device or a complementary metal oxide semiconductor (CMOS). Liquid lenses, which change shape as electricity is applied, are an option that can expand the depth of field for high throughput optical inspection.
Visual Inspection Instruments
Despite advances in technology, visual inspection remains an essential tool for quality control. In addition to preventing expensive mistakes during production, this type of non-destructive testing (NDT) also helps ensure the safety of equipment and infrastructure.
Vision measuring systems use a camera, operating through zoom or telecentric lens, to capture images of the product. These cameras can measure 2D features such as points, lines, arcs and circles, and 3D features like straightness, flatness, circularity, concentricity and symmetry. These systems are ideal for machined parts, plastic mouldings and pressed metal components.
Distributor of standard & custom metrology equipment including optical comparators & visual inspection instruments. Services include CMM calibration & repair, engineering, automation & installation. Serves automotive, aerospace, energy & BIM industries. Also provides CMM rentals by day, week or year. ISO 17025 accredited. Also offers calipers, micrometers, dial indicators & hand tools. Custom manufacturer of turnkey vision measuring instruments implementing line-scan, area-scan, structured light technology & microscope imaging technology. Turnkey capabilities include system integration, consulting, CAD design assistance & on-site project evaluation.
