Quality and Inspection of Machining Operations: CMM Integration to the Machine Tool

Mears, Laine; Roth, Joseph; Djurdjanović, Dragan; Yang, Xiaoping

doi:10.1115/1.3184085

Cited by 45 publications

(21 citation statements)

References 81 publications

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“…With the continual development of modern manufacturing technology, incorporating dimension metrology feedback to the machining process has necessitated a critical evolution activity to consistently improve part quality and manufacturing efficiency [5,6,9,17]. Using OMM, the part geometry can be measured by replacing cutter using probe at its machining setup.…”

Section: Literature Reviewmentioning

confidence: 99%

“…However, bringing together these two previously decoupled operations, measurement and machining, has revealed a number of additional issues that are directly related to the integration into a common platform or manufacturing system, including data communication, information fusion, coordinate transition, and accuracy compatibility [8,13,17,25].…”

Section: Literature Reviewmentioning

confidence: 99%

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Integration strategy of on-machine measurement (OMM) and numerical control (NC) machining for the large thin-walled parts with surface correlative constraint

Liu

Wang

Zhang

et al. 2015

Int J Adv Manuf Technol

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There is a kind of large thin-walled parts in aerospace industry, the machining target surface of which is tightly associated with another specific surface (named correlative surface). And it is always the primary machining objective. However, the preformed correlative surface is significantly different from its original design model due to large profile and thickness errors. Thus, part-referenced machining is necessary to ensure the correlative constraint accuracy. In this article, an integration strategy of OMM and NC machining for the large thin-walled parts with surface correlative constraint is systematically developed. Generally, the integration process consists of correlative constraint analysis, on-machine measurement, machining target surface redesign, and NC machining. Firstly, an isoplanar-based on-machine scanning method is presented for large surface profile information extraction. Then, a unified target surface redesign model is established according to surfaces accompanying relation analysis. Further, to compensate stress-induced monotonic structural deformation, a partitioned measuring and machining approach has been employed. Finally, the liquid rocket engine nozzle as a typical part was employed to verify the validation of the proposed strategy. Coolant channel machining experiments were conducted on a special dual-spindle machine tools. For a nozzle with machining area about 8 m 2 , the correlative accuracy could be controlled in the range of ±0.1 mm. It has been proved that incorporating dimensional metrology feedback to machining process could consistently improve machining quality and efficiency of large thin-walled parts.

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Section: Literature Reviewmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%

Integration strategy of on-machine measurement (OMM) and numerical control (NC) machining for the large thin-walled parts with surface correlative constraint

Liu

Wang

Zhang

et al. 2015

Int J Adv Manuf Technol

View full text Add to dashboard Cite

show abstract

“…On-machine measurement of workpiece on machine tools [1] is typically used either for: (1) postmachining measurement of the machined workpiece for machining accuracy inspection, and (2) premachining measurement of workpiece setup or geometry to optimize an NC program. Large setup error of workpiece position and orientation, or large uncertainty in workpiece geometry, may cause excessive cut, which could damage tool and/or workpiece, or large air cut, which lowers the machining efficiency.…”

Section: Introductionmentioning

confidence: 99%

Formulation of Influence of Machine Geometric Errors on Five-Axis On-Machine Scanning Measurement by Using a Laser Displacement Sensor

Ibaraki

Kimura

Nagai

et al. 2015

Journal of Manufacturing Science and Engineering

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For on-machine measurement of workpiece position, orientation, and geometry on machine tools, five-axis continuous (scanning) measurement by using a laser displacement sensor has a strong advantage in its efficiency, compared to conventional discrete measurement using a touch-triggered contact probe. In any on-machine measurement schemes, major contributors to their measurement uncertainty are error motions of the machine tool itself. This paper formulates the influence of geometric errors of rotary axis average lines on the measurement uncertainty of the five-axis on-machine measurement by using a laser displacement sensor. To validate the present simulator, experimental comparison of measured and simulated trajectories is conducted on five-axis on-machine measurement of a precision sphere of the precalibrated geometry. For total 28 paths measured on the spherical surface, an error in the simulated trajectories from measured trajectories (properly low-pass filtered) was at maximum 5 lm. Uncertainty assessment demonstration for more practical application example of a turbine blade measurement is also presented.

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“…Most commercial touch-triggered probes are for discrete point probing only. For more efficient continuous profile measurement, the application of laser displacement sensors has been extensively studied; some of them with successful commercial applications [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

On the limitation of dual-view triangulation in reducing the measurement error induced by the speckle noise in scanning operations

Ibaraki

Kitagawa

Kimura

et al. 2016

Int J Adv Manuf Technol

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A triangulation-based laser displacement sensor using the diffuse reflection light has a strong practical advantage in its robustness against the tilting of the object surface to the sensor's sensitive direction. On the other hand, it is often subject to higher-frequency noise-like measurement error in scanning operations. This error is caused by the movement of the speckle in the reflected laser beam spot with the scanning operation. This paper first discusses how the dual-view triangulation, using two image sensors aligned symmetrically about the laser beam axis, can reduce the scanning noise in principle. Then, its inherent limitation is discussed. Since different points on the target surface cast the specular reflection to each image sensor, the influence of the sensor's lateral movement cannot be canceled by comparing the reflected spot's displacement on each image sensor. This issue can be observed clearer when measuring a surface of a less random surface profile. It is experimentally validated.

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Quality and Inspection of Machining Operations: CMM Integration to the Machine Tool

Cited by 45 publications

References 81 publications

Integration strategy of on-machine measurement (OMM) and numerical control (NC) machining for the large thin-walled parts with surface correlative constraint

Integration strategy of on-machine measurement (OMM) and numerical control (NC) machining for the large thin-walled parts with surface correlative constraint

Formulation of Influence of Machine Geometric Errors on Five-Axis On-Machine Scanning Measurement by Using a Laser Displacement Sensor

On the limitation of dual-view triangulation in reducing the measurement error induced by the speckle noise in scanning operations

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