A technique for intrinsic and extrinsic calibration of a laser triangulation sensor (LTS) integrated in an articulated arm coordinate measuring machine (AACMM) is presented this paper. After applying novel approach to the AACMM kinematic parameter identification problem, by means single gauge object, one-step method obtain both intrinsic-laser plane, CCD camera geometry-and parameters related main frame has been developed. This allows integration LTS mathematical models without need...

One of the main disadvantages for use 3D printers in final product manufacturing is its lack precision and poor dimensional accuracy. This paper proposes volumetric error compensation technique based on pattern artifacts. applied to an Objet 350 V printer. It developed kinematic model machine functions are approximated by Legendre polynomials order 3. As reference measurement device a Zeiss PMC MMC 850 with VAST XT scanning head used. To materialize points conical sockets used that measured...

Purpose – This paper aims to present a methodology for volumetric error compensation. technique is applied an Objet Eden350V 3D printer and involves custom measurement strategy. Design/methodology/approach The kinematic model of the explained, its simplified 18 independent functions. Each function defined by cubic Legendre polynomial. coefficients polynomials are obtained through Levenberg–Marquardt optimization process. process compares, in iterative algorithm, nominal coordinates with...

Nowadays, computerized dimensional inspection is included in most manufacturing processes.Industrial vision systems, laser triangulation sensors (LTS) particular, are responsible for ensuring and geometrical tolerance compliance.Computer-aided design / computer-aided engineering (CAD/CAE) plays an important role the process.However, of LTS, there no equivalent tool to provide assistance process definition.This paper presents a simulation environment assist with this issue.Based on CAD files...

In the last century, statistical process control has been considered a successful methodology for monitoring variability and stability of over time. The analysis using functional data become widespread during early years 21st century. present study proposes implementation hybrid called based on combines its advantages with those control, in order to provide tool detecting deviations. phases are: (1) stabilization processes through identification elimination special causes variability; (2)...

Image coregistration aims at stacking two or multiple images in a way such that, for each image, the same pixel corresponds to point of target scene (possibly with sub-pixel accuracy). We can distinguish families image problems, basically depending on if be coregistered are taken by sensors different type (e.g., sensing wavelenghts), and similar illumination acquisition geometries (e.g. sun conditions and/or incidence angles). Whilst first is well established, multimodal not yet founded due...

Abstract The development of new gauges and alternative calibration verification techniques applied to articulated arm coordinate measuring machine (AACMM) has been approached in different ways. In this work the analysis use a laser tracker (LT) as reference instrument procedures for AACMM together with an indexed metrology platform (IMP) replacing conventional one-dimensional is presented. This technique avoids need materializing length required gauge, increasing flexibility defining test...

Single-flank and double-flank rolling tests are functional verifications to obtain representative parameters of the future gear behavior under operating conditions. The reliability results questioned due great number error sources together with a lack norms that could provide standard traceability procedure. Currently, there not commercial machines integre both tests. In this work, development an equipment which combines single-flank for worm-worm is presented. Consequently, complete studies...

Abstract Traditionally, the single purpose of design a workpiece has been its final use. In some cases, this is adapted to manufacturing process, as for example casting. However, verification not considered in design. paper, methodology proposed evaluate friendliness with benchmark. The main topics dimensional verification: uncertainty, sampling or cost are addressed, Three actual on same design, used illustrate method, benchmarking every them an Efficacy and Efficiency scale. For each them,...

Layer manufacturing machines are affected, the same way as traditional processes, by systematic errors [.This lack of precision and poor dimensional accuracy can be reduced software compensation techniques. This paper proposes a parametric error technique based on pattern artifacts. is verified an Objet 350V 3D printer. To begin, these techniques require development kinematic model [. The data acquisition performed with CMM self-centering to measure conical sockets manufactured in faces...

A new long distance measurement system design, based on parallel kinematics, is presented in this paper. This has two degrees of freedom for positioning and orientating high precision cameras. In document the design. Several configurations have been analyzed components needed such as actuators, linear captators (to measure displacement), spherical ball‐and‐socket joints universal joints, selected. The developed model allows us to obtain kinematic joint variables, depending geometric...

The design of a certain workpiece lies mainly in its functionality. Nevertheless, most cases the has to be adapted characteristics manufacturing process, taking casting as representative example. Surprisingly, dimensional verification is kept out design, increasing some substantially final cost workpiece. In this paper, friendliness between and evaluated. main concerns verification: sampling strategy uncertainty are addressed. Additionally, terms equipment time covered. Four illustrative...

The design of a certain workpiece lies mainly in its functionality. Nevertheless, most cases the has to be adapted characteristics manufacturing process, taking casting as representative example. Surprisingly, dimensional verification is kept out design, increasing some substantially final cost workpiece. In this paper, friendliness between and evaluated. main concerns verification: sampling strategy uncertainty are addressed. Additionally, terms equipment time covered. Four illustrative...