Influence of the shape of the toroidal flank surface on the cutting wedge angles and mechanical stresses along the drill cutting edge

,; Pivkin, Petr; ,; ,; Ershov, Artem; ,; Mironov, Nikita; ,; Nadykto, Alexey; ,

doi:10.17212/1994-6309-2023-25.4-151-166

Cited by 3 publications

(3 citation statements)

References 7 publications

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“…Thus, inspection has gradually become a key step in the production, use and maintenance of products with complex shapes, without unified standardization mechanisms. With the development of sensor technologies and 3D reconstruction technologies, a large number of research results have been achieved in the field of damage detection methods based on point cloud data [17][18][19][20][21]. In recent years, the rapid development of deep learning in the field of image processing has provided new ideas and research directions for 3D point cloud detection methods [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

A new algorithm for recreating the technological process of high-speed multicoordinate processing based on improving key indicators of image recognition

Pivkin,

Ershov,

Grechishnikov

et al. 2024

Optics, Photonics, and Digital Technologies for Imaging Applications VIII

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Solving the problem of reverse engineering as a key element of the production process and its technological preparation has a key role. This work demonstrates for the first time the possibility of preparing production and collecting key indicators, which allows you to recreate a digital twin of the technological process and display the technological aspects of the design as a result of collecting key indicators. Such indicators include the width of the cut layer, the cutting zone of a conical cutter during multi-axis positioning, obtained based on the results of processing a group of images of processed products. Actual technological indicators of the technological process can be identified and numerically formalized by assessing the shape of the helical surface on a class of parts obtained as a result of multi-coordinate processing, which proves the possibility of applied application of the method in the structure of the production process in real time. As a result, the use of a new algorithm will reduce the likelihood of receiving defective products and recreate the technological process based on processing a set of product images. The work constructs an analytical model for the automated creation of processing paths based on improved B-splines, which can significantly improve smoothness compared to numerical methods for generating paths. The actual technological indicators of the machining process can be identified and numerically formalized dependencies by determining the influence of the helical surface on the precise positioning of the end mill with compensation along each axis during 5-axis machining, obtained as a result of multi-axis machining, which proves the possibility of applied application of the method in the production process in the mode real time.

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Section: Introductionmentioning

confidence: 99%

A new algorithm for recreating the technological process of high-speed multicoordinate processing based on improving key indicators of image recognition

Pivkin,

Ershov,

Grechishnikov

et al. 2024

Optics, Photonics, and Digital Technologies for Imaging Applications VIII

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“…Advanced image capture capabilities based on complementary metal-oxide-semiconductor (CMOS) image sensors. Control of the shape of the helical flute is complicated by the variable curvature of the front panel of the end mill for high speed machining [73,74], the difficulty of lighting, the error in determining the focus settings in the hard-to-reach area of the helical flute [75][76][77], technological features of operation [78], the level of development of measuring instruments of the machine when an error occurs.…”

Section: Introductionmentioning

confidence: 99%

A new method and practical recommendations for measuring geometric accuracy, linear and angular measurements of helical surfaces of end mill for HSM

Pivkin,

Yazev,

Ershov

et al. 2024

Optics, Photonics, and Digital Technologies for Imaging Applications VIII

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In precision engineering, helical surfaces on critical parts of equipment have become widespread. The article proposes an new method and practical recommendations for measuring geometric accuracy, linear and angular measurements, and studying the characteristics of helical surfaces and specialized equipment for monitoring the accuracy of helical surfaces. The uniqueness of the approach lies in the formation of key indicators of classification and filtering of a set of specialized measurement techniques based on scanning and digital image processing. A new method is proposed that makes it possible to adjust the measurement of the coordinates of the profile points of the helical surface in the radial section according to the shape of the focal area on the helical surface obtained by a reflected light camera. The work established new indicators of the effectiveness of tool control for high-speed multi-axis milling based on recommendations for the selection of methods and means of monitoring and control at the stage of technological preparation of production in real time. Criteria and indicators have been formed to eliminate errors at any stage in the process of digital control of images of the helical surface of a cutting tool for high-speed machining. The method consists in determining the law of preserving the shape of the profile, its further rotation and comparison with the original control profile by identifying a new relationship between the focal length and the profiling shape. The shape of the profiling curve is described depending on the angle of inclination of the helical flute, diameter, segmentation of the image in the focal zone and the magnitude of the error when measuring the profile in real time relative to the base profile. In this regard, the work justifies the practical adaptation of the search results for key measurement schemes in comparison with other existing methods for helical surfaces with an rake angle of the tangent to the profile in the axial section. The new level of production creates greater demand for product quality efficiency in a unified digital environment. As an advanced solution, the work proposes a method for compensating for errors in the shape of the focus area. This method allows you to compensate for the error in real time without stopping for readjustment. More accurate results allowed for an increase in accuracy up to 10 times compared to existing methods.

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“…The development of production systems, the creation of a digital environment to support the technological process [2][3][4][5][6][7] with access to CNC systems [8][9][10] and the monitoring of information about the cutting from sensors [11][12][13][14] has made it possible to increase the requirements for accuracy and improve the design complexity of tool designs [15][16][17][18][19][20]. In this connection, to ensure production flexibility, it is necessary to use such flexible methods of technological preparation as the possibilities for producing various standard sizes of end mill designs are wide.…”

Section: Introductionmentioning

confidence: 99%

Digital twin of the technological process for grinding helical flutes of a cutting tool

Pivkin

2024

Real-Time Processing of Image, Depth, and Video Information 2024

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Helical flutes are the most important elements of axial cutting tools. The technological process for manufacturing helical flutes is multifactorial, complex and difficult to quickly calculate online. The production of flutes is carried out on a multiaxis grinding machine with a conical or cylindrical grinding wheel. The task is also complicated by the fact that in more than one section the shape of the helical flute does not match the grinding wheel. Therefore, the development of technology and its preparation requires a long time. The work proposes a digital twin for the production of helical flutes with the input results of processing 40 variants of technological processes and compares them with the results of processing images of helical surfaces in real time. The work for the first time established an analytical connection between the shape of the grinding wheel, the geometry of the front helical surface of the cutter, the trajectory of movement and the location of the wheel, structured into a system of signals from sensors with a controlled monitoring effect per unit of time. This made it possible to install real-time control indicators to assess accuracy in the processing area and, based on the indicator, to form a control action to ensure the production of suitable products. This work allows us to lay the crating for a new direction in the field of industrial production of cutting tools. The use of real-time data in the current time window to evaluate future spatio-temporal information of the process state makes it possible to continuously adjust the movement of the grinding wheel with a given error and deviation, which is ensured by a continuous analytical solution that takes into account the basic geometric parameters of the cutter and the grinding wheel.

show abstract

Influence of the shape of the toroidal flank surface on the cutting wedge angles and mechanical stresses along the drill cutting edge

Cited by 3 publications

References 7 publications

A new algorithm for recreating the technological process of high-speed multicoordinate processing based on improving key indicators of image recognition

A new algorithm for recreating the technological process of high-speed multicoordinate processing based on improving key indicators of image recognition

A new method and practical recommendations for measuring geometric accuracy, linear and angular measurements of helical surfaces of end mill for HSM

Digital twin of the technological process for grinding helical flutes of a cutting tool

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