Optical image inspection of helical surface geometry of drill

Emerging Imaging and Sensing Technologies for Security and Defence VII

Гречишников

Ershov

et al. 2022

The geometric parameters of sharpening the rake surface are very important for the efficient use of the drill. Therefore, it is important to know the correct sharpening angle of the drill in the radial direction. This is especially important at the stage of regrinding the drill, due to the incorrect installation of the drill into the fixture. In this paper, a new image processing algorithm is proposed that allows you to set indicators and factors that determine the correct choice of the angular position of the drill after regrinding. This algorithm can be of great industrial use due to the simplicity of implementation and minimization of the necessary equipment for setting up the measuring station. The presented model has an important application value and differs from the existing ones in that it can be applied for regrinding of drills with curvilinear cutting edges. This advantage is achieved by using a simpler construction of the drill’s flank surfaces. The proposed design ensures a rational distribution of the clearance angle value along the cutting part regardless of the original shape of the flank surface before the regrinding. Taking into account the limitations of the image processing algorithm and the theoretical model of the cutting part of a tri-flute drill, a rational ratio of the rake and clearance angles obtained by simulating the edge movement in cutting process. This approach allows a radical revision of the traditional recommendations for regrinding process of tri-flute drills. This is becomes possible to solve problems associated with regrinding drills with involute and multi-level flat flank surface. However, the validity of our work still needs to be carefully checked.

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

New image processing algorithm to control the accuracy of sharpening drills

Emerging Imaging and Sensing Technologies for Security and Defence VII

Гречишников

Ershov

et al. 2022

“…The general measuring process involves are two dierent methods: non-contact optical metrology (with high-precision CCD cameras) [6] and contact metrology (with touching probe) [7]. Each of the methods has a target application, for example: optical cameras that use the transmitted light method are used to measure tool dimensions parameters [8,9], reected light cameras are used to measure angular parameters of surfaces [10,11], and for measuring prole mainly used a contact probes [12]. Automated cutting tool measurement process is based on machine vision technology [13].…”

Section: Introductionmentioning

confidence: 99%

A new method for processing algorithm to recognition of the profile of micro-mills

Emerging Imaging and Sensing Technologies for Security and Defence VII

Minin

Ershov

et al. 2022

Modern methods of control geometry parameters of cutting tools often incorporate measuring operations performed using high-precision CCD cameras which work on the contrast-detection method. The key advantages of this method are the high speed of measurements, the simplicity of using general method on modern CNC measuring systems and a wide range of possibilities for controlling prole locations of surfaces. However, using this method largely depends on the resolution of the camera's ability and the size of the controlled area, which in turn imposes signicant restrictions on the measurement of surface areas which are less than 10% of the frame area. This paper proposes a new way to measure the area of prole section of microtool surfaces, based on the identifying of a focused area throughout the entire frame area. This method makes it possible to recognize the nature of the focus distribution at dierent camera positions, which in turn makes it possible to measure the area of prole section of microtool surfaces when the size of the controlled area is less than 10% of the frame size to use the contrast autofocus method to incomparably increase.

“…This task cannot be performed by any method other than the image processing algorithm. In this paper, we propose a model and a system of restrictions on the transition of the cutting edge to the surface of a gash in the form of coordinates (x, y, z) of points on a helical groove [34,35]. Since one of the main methods of 3D surface imaging is based on the use of a source, the development of a special system for analyzing a 2D pattern with variable pixel intensity in space will depend on the curvature of the edge transition to a gash.…”

Section: Introductionmentioning

confidence: 99%

Development of an approach to automated design and measurement of the front surface of ceramic cutters with a system for modifying the original design

Optical Metrology and Inspection for Industrial Applications IX

Гречишников

Nazarenko

et al. 2022

A new approach to the automated design and control of ceramic end mills is proposed, which allows creating a group of structures for machining a range of products from various hard-to-cut materials in different modes. The method compares favorably with the existing ones by creating new cutting tool with increased performance, providing an increase in the resistance of mill to brittle fracture up to 2-3 times. The design approach includes a comprehensive measurement module for quality control of products with a reduction in the complexity of measurement up to 10 times in terms of time.