The advent of 3D scanners has significantly transformed the methods in which we gather structural information, thereby streamlining replication processes. These innovative tools offer capacity for virtually any project scope, from miniature model designs to full-scale automobiles. Their potential is only limited by your imagination.
All you need to know about 3D scanners
Apr 15, 2024
What is the role of a 3D scanner?
3D scanners achieve their functionality by generating 3D scans. The working principle of a 3D scanner is somewhat similar to that of a camera, which captures two-dimensional static images.
However, unlike a camera, a 3D scanner goes a step further by not only capturing the object’s appearance but also by capturing the intricate details of its geometric shape. This allows the scanner to create a highly accurate and realistic 3D model of the object’s surface.
How does a 3D scanner work?
3D scanners work by projecting light onto an object and capturing its reflection. By measuring the time it takes for the light to return, the distance of each point can be determined, which are then collectively used in the form of XYZ coordinates to digitally reconstruct a 3D representation of the object.
Generally speaking, 3D scanners can be divided into two main types: contact scanners and non-contact scanners.
Contact scanners require the use of a contact probe to directly contact the object for scanning, while non-contact scanners use lasers or radiation (such as X-rays or ultrasound) to collect information about the object.
What is 3D scan?
A 3D scan refers to a three-dimensional portrayal of a section of an object’s surface. A comprehensive 3D model emerges from the amalgamation of multiple sets of these scans.
Analogous to a two-dimensional photograph comprised of pixels, a 3D scan consists of diminutive triangles or polygons.
These polygons congregate to form what is known as polygonal mesh—a precise reproduction mirroring the intricate geometry of the scanned object.
Difference between resolution and accuracy?
The terms resolution and accuracy represent two essential parameters in the domain of 3D scanning. Nonetheless, they are frequently misconstrued.
The term resolution pertains to the granularity of detail that a scanner can identify and capture, with high-resolution output reflecting a finer degree of captured detail.
On the other hand, accuracy denotes how closely the measurements obtained from the scanner correspond to or align with actual dimensions or specifications of the scanned object.
What are the different types of 3D scanners?
3D laser scanner: One of the most popular types, uses laser and camera information to create a point cloud of the object surface to generate a 3D model.
Photogrammetry: Using camera images to capture images of objects from different angles and then generating 3D depth information by matching pixels.
Structured light scanning: Use a projector to project a light pattern onto the surface of an object and record its distortion, and then use the camera and light pattern information to create model points.
What are the applications of 3D scanners in adaptive machining?
In the field of adaptive machining, advanced laser 3D scanning technology plays a pivotal role. It meticulously digitizes the surface geometry of components and subsequently transmits this information to formulate updated machining tool paths.
This innovative process enables real-time modifications without any requirement for repositioning the CNC machine, thereby enhancing precision in machining operations and significantly reducing operational costs.
How to use 3D scanner for reverse engineering?
Reverse engineering is the process of utilizing scanned data of physical objects to create 3D CAD models for product enhancement and archiving.
Often, old parts are only described in 2D drawings and lack 3D CAD models. However, accurate 3D scanners can use their precise three-dimensional data to accurately reproduce traditional parts.
By scanning the part, the data generated by the 3D scanner becomes a key reference for creating 3D CAD models. These models can be used to develop new molds, tooling, or to manufacture new parts with the same dimensional characteristics as the original or engineered product.
High-quality 3D scan data, especially with waterproof meshes, can also be used to 3D print original copies, making the reverse engineering process more efficient.
Find out the right Scantech 3D scanner for your application
3D Laser Scanner
The functioning of 3D laser scanners is primarily governed by advanced software that guides the laser probe’s path above an object’s surface.
The probe emits a structured beam onto the object, while dual sensor cameras consistently capture and record variations in distance and structure as the laser line traverses across the three axes (X, Y, Z) of the object.
SCANTECH offers a diverse range of 3D laser scanners tailored to meet every precise scanning need.
Our portfolio includes the NimbleTrack, a lightweight wireless system achieving 120FPS and 0.025mm accuracy for small to medium settings;
The versatile KSCAN, known for its adaptability and precision; the compact SIMSCAN, offering unmatched speed and portability;
The robust AXE Series, is ideal for larger objects; and the TrackScan Series, is perfect for detailed and comprehensive scanning without contact.
3D Handheld Scanner
The Handheld 3D Scanning solution stands out for those who desire superior-quality digital replication. These handheld devices emit either a singular point or continuous beam from their portable unit onto an item.
Subsequently, an embedded sensor calculates distancing to gauge surface dimensions – all based on principles of triangulation.
Scantech’s handheld 3D scanners redefine the balance between accuracy and efficiency. Engineered as non-contact metrology systems, they boost productivity and enhance product lifecycle management.
Our handheld scanners are the epitome of technological innovation, designed for professionals who demand precision without compromise.
3D Full Body Scanner
Renowned for their reliability, efficient setup process and robust performance capability, 3D full body scanners are widely regarded as premier solutions in contemporary markets.
A full-body scanner refers to a sophisticated device capable of identifying objects present either on or within human subjects during security screening procedures — thereby negating requirements for clothing removal or any form of physical interaction.
The SCANTECH iReal color 3D scanner, particularly the iReal M3, features advanced dual light sources—combining infrared parallel lasers and VCSEL structured light.
This technology is adept at scanning a diverse range of objects, from intricate industrial designs to the subtle curves of the human body, ensuring high fidelity in both laboratory and on-site applications.
Explore the suitability of 3D scanning for your specific application! Contact the Scantech team today, our 3D scanners provide accurate and reliable solutions for a wide range of advanced metrology needs across industries.
