Real-time quality meshing for a metrology grade point cloud measurement process
Capturing high-quality point clouds in 3D with a laser scanner used to be a black art, mastered over a long period of time through trial and error. Not anymore.
PolyWorks® 2014 transforms laser scanning into a systematic and objective metrology process by creating polygonal models of digitized parts in real time and computing quality metrics that reveal ineffective scanning methods.
Scanning operators are then able to visually review the areas of the digitized part that do not meet predefined quality criteria, and then scan those areas until quality metrics reach their prescribed values.
Building polygonal models from scan data in real time
PolyWorks 2014 incrementally builds a polygonal model of a digitized part by adding to the model under construction the latest scan pass as soon as it has been captured, a process that only takes a few seconds. This real-time meshing algorithm offers remarkable performance. It can handle in real time, on a laptop for standard engineering applications, the digitizing session for a car body side and the display of 100 million triangles using advanced graphics capabilities.
Highlighting and repairing quality issues
Real-time access to a polygonal model of the digitized part allows PolyWorks 2014 to compute quality metrics that reveal key scanning issues. Typical issues include insufficient scan line density (caused by scanning too fast or with the wrong line orientation near a sharp fillet), areas only scanned at a large surface-to-scanner angle, abnormal noise levels caused by specular reflections, or misaligned scans. Areas that do not meet the target values for each quality metric are immediately highlighted on the digitized part display. Operators may then add new high-quality scans in those areas, delete and rescan areas that are beyond recovery, or entirely remove misaligned scans until the highlighted quality issues are fixed.
Immediate return on investment
Armed with these effective real-time feedback techniques, laser scanner operators can now systematically deliver high-quality digitizing results under all circumstances. PolyWorks 2014 delivers an immediate return on investment to its users by:
- Enhancing the quality and precision of laser-scanning measurement sessions without changing hardware
- Eliminating the variations of point cloud measurement quality and precision from operator to operator
- Accelerating learning for a new laser scanner operator
Enhanced part measurement capabilities
Device position uncertainty
Analyze device position uncertainty to control the global accuracy of your large-volume measurement projects.
Inappropriate target setup: daisy-chained device positions.
Surface feature probing
Probe a Surface feature and report the surface profile and probed point deviations.
Guiding points for feature probing
Improve measurement repeatability on the shop floor by guiding operators to probe specific locations on the features to measure.
Invoke all typical measurement commands and macro scripts by talking to PolyWorks (based on the Microsoft Speech Recognition technology).
GD&T (Geometric Dimensioning & Tolerancing) is a symbolic language for encoding the functions of each feature of a part and specifying manufacturing tolerances to guarantee assembly and operation.
Release after release, PolyWorks differentiates itself from other metrology products by offering only the rigorous mathematical algorithms prescribed by the international ASME and ISO standards and providing a fully automatic decoding and computation engine that hides the complexity behind measuring GD&T.
Datum targets are portions of a Datum feature that a mating Datum feature or fixture will engage during assembly. With PolyWorks 2014, users can now import Datum targets from the PMI stored in native CAD models, create and configure Datum targets using CAD models and/or nominal geometric primitives, and automatically compute GD&T Datum Reference Frames built from Datum features and targets.
Quick and efficient workflows to configure and report geometry controls
PolyWorks 2014 marks the end of a seven-year development cycle in which all major PolyWorks|Inspector™ workflows and user interfaces were rewritten and optimized. Geometry controls are the dimensions of measurement objects whose measured values are controlled by means of tolerances. They usually make up the backbone of an inspection process. PolyWorks 2014 delivers major enhancements related to geometry controls that significantly accelerate the production of a part inspection report from its specifications.
Universal geometry controls interface
Add, configure, and review geometry controls for all measurement objects using the new, universal Geometry Controls interface.
Intuitive report table and object annotation editors
Customize the display style and contents of report tables and object annotations in record time.
Automatic inspection report generation
Automatically transfer newly created report tables and 3D Scene snapshots to a formatted inspection report.
Dimensions on Reverse-Engineered Sketches to Capture Design Intent
Dimension creation on parametric 2D sketches
Create linear, radial, and angular dimensions on parametric 2D sketches.
Sketch import into professional CAD solutions
Directly import native PolyWorks sketches into the CATIA, NX, Creo, SolidWorks, and Inventor professional CAD solutions using complimentary add-ins.
Minimization of part-to-sketch deviations
Let PolyWorks automatically optimize the sketch while imposing dimensions in order to minimize the deviations of the sketch with respect to the digitized part.
What's new in PolyWorks 2014
Click on the image to download the PDf version.