Research on Online Measurement Method of Hole Diameter and Position

Gong, Yu; Zhang, Jing Cai; Liu, Hong Qi

doi:10.4028/www.scientific.net/amm.347-350.197

Cited by 2 publications

(2 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…x i and y i are the local coordinates of the fitting point on the measured hole. (X 0 , Y 0 ) is the optimized coordinates of circle center by Equation (20). d is the diameter of the measured hole.…”

Section: A Visual Measurement Model Of Hole Group Size Based On Circl...mentioning

confidence: 99%

See 1 more Smart Citation

Research on Visual Measurement of Aperture and Hole Group Center Distance Based on Geometric Constraint

Ren

et al. 2023

Symmetry

View full text Add to dashboard Cite

Hole is the most common symmetrical geometric structure of mechanical parts, and aperture and hole center distance are important measured dimensions in machining. However, existing visual measurement methods often require high equipment installation accuracy and low measurement accuracy. To solve the problem of projection deformation of the measured hole: Firstly, a local coordinate system is created, and the coordinate plane of the coordinate is parallel to the end face of the measured hole. Secondly, a cone is established, the end face of the measured hole is alike to the bottom face of the cone, and the optical center of the camera is the vertex. The space equation of the cone is represented by the coordinates of the center point of the hole. Finally, a cutting plane is established near the imaging plane of the camera, and the intersection line equation between the plane and the cone is obtained, and the diameter of the measured hole and the coordinates of the center of the circle are obtained through the parameters of the intersection line equation. In order to solve the problem of errors in edge points of the hole, geometric constraints based on the center of the circle are used to improve measurement accuracy. This experiment takes the automobile insert mold as the measured part and uses the measurement model of this paper to measure the aperture and hole center distance of the mold. The measurement results show that the measurement accuracy of the aperture is 0.018 mm, the measurement accuracy of the center distance of the hole is 0.05 mm, and the maximum relative error is 2.2%.

show abstract

Section: A Visual Measurement Model Of Hole Group Size Based On Circl...mentioning

confidence: 99%

“…Gong et al [20] introduced the methods of obtaining aperture by different measurement methods, and these methods included contact probes, inductive sensor, laser sensor, and the machine vision method. Compared with other methods, the visual method was easily affected by environment lighting.…”

Section: Introductionmentioning

confidence: 99%

Research on Visual Measurement of Aperture and Hole Group Center Distance Based on Geometric Constraint

Ren

et al. 2023

Symmetry

View full text Add to dashboard Cite

show abstract

In-Process Dimension Monitoring System for Integration of Legacy Machine Tools into the Industry 4.0 Framework

Dayam

Desai

Kuttolamadom

2021

Smart and Sustainable Manufacturing Systems

View full text Add to dashboard Cite

Manufacturers are implementing sensors, Internet of Things (IoT)-based automation, and communication devices on shop floors for connecting machine tools to a network-connected system for achieving “smart” functionality. The existing installation of legacy machines that offer either no or limited adaptability to these changes is a big obstacle to realizing the potential benefits of smart manufacturing. This research paper presents a sensor-based dimension monitoring system to capture and digitize component dimensions during machining operations. The capabilities are attained by developing an integrated framework consisting of sensors, data acquisition systems, feature extraction modules, and digital interfaces. The framework is implemented on legacy equipment such as lathes, milling, and drilling machines for component dimension monitoring while performing common operations. The proposed system functions at the edge level to improve man (operator)–machine–material interactions by displaying component dimensions and graphical visualization of the operations. The system also helps the operator recognize the resulting cutting forces and thereby achieve guided process control. The data generated at an edge level can be transmitted to the enterprise layer for performing tasks such as machine performance evaluation, man–machine utilization, process optimization, operator feedback, etc. The proposed framework provides a potential solution for integrating a vast base of the existing legacy machines into the Industry 4.0 framework.

show abstract

Research on Online Measurement Method of Hole Diameter and Position

Cited by 2 publications

References 1 publication

Research on Visual Measurement of Aperture and Hole Group Center Distance Based on Geometric Constraint

Research on Visual Measurement of Aperture and Hole Group Center Distance Based on Geometric Constraint

In-Process Dimension Monitoring System for Integration of Legacy Machine Tools into the Industry 4.0 Framework

Contact Info

Product

Resources

About