Predicting geometric parameters of assemblies with neural network models

Bolotov, M. A.; Pechenin, V. A.; Ruzanov, N. V.; Grachev, I. A.

doi:10.1088/1742-6596/1096/1/012198

Cited by 9 publications

(1 citation statement)

References 12 publications

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“…The second group uses a kinematic diagram of robots with successive rotary links. The third group of printers is based on delta kinematics and Stewart's platform [20,21]. The article [21] considers the possibility of developing an FDM printer based on the Stewart mechanism.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Analysis of Delta Kinematics FDM Printer

Захаров

Пугин

Иванова

2022

J. Phys.: Conf. Ser.

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Additive manufacturing makes it possible to speed up the process of manufacturing a product using a CAD model many times over. This advantage is effectively used in the manufacture of small batches of products with complex surfaces in the automotive and aviation industries. Improvements in printers are needed to improve accuracy and productivity. Traditionally, delta kinematics are considered to have advantages over sequential linear kinematics due to their high travel speed and relatively low cost. However, delta kinematics has received limited application, mainly for personal FDM printers. The article attempts to understand the advantages and disadvantages of delta kinematics for use in 3D printers. For this, the displacements and velocities were simulated for four examples of motion trajectories. The analysis showed that the average speed of movement of the extruder is approximately equal to, and in some cases less than the linear speeds of movements along the rods. At the same time, to ensure a uniform speed of the extruder, significant accelerations are required along the individual rods. This leads to vibrations and ultimately limits the maximum speeds.

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Section: Introductionmentioning

confidence: 99%

Modeling and Analysis of Delta Kinematics FDM Printer

Захаров

Пугин

Иванова

2022

J. Phys.: Conf. Ser.

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Assignment of dimensional accuracy parameters of parts during assembly of aircraft repair engines

Grachev

Bolotov

Kudashov

et al. 2020

IOP Conf. Ser.: Mater. Sci. Eng.

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The article considers the existing models and methods of analysis and synthesis of geometric tolerances of products with assembly dimensional chains. There proposed a method to define the rational tolerances for the linear dimensions of parts during assembly of aircraft repair engines. The developed methodology is based on the use of computer simulation technology for assembling the assemblies with actual geometry, and a model for calculating the labor input and cost of parts manufacturing based on the assigned tolerances. The main advantages of the technique are considered by the example of assigning rational tolerances to the parts of the repair rotor of a high-pressure compressor, which have the greatest influence on the functional characteristics of the aircraft engine. The results of the relationship between the dimensional accuracy parameters of parts and assembly parameters are presented, and the dependence of the cost of refinement or manufacturing of the part on the assigned tolerance is obtained.

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