Iteration based calculation of position and orientation of grinding wheel for solid cutting tool flute grinding

Chen, Zhan; Ji, Wei; He, Genghuang; Liu, Xianli; Wang, Lihui; Ye, Rong

doi:10.1016/j.jmapro.2018.10.012

Cited by 25 publications

(7 citation statements)

References 15 publications

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“…proposed iteration-based methods to search the wheel position for traditional flute [8] and "closed" flute [9] that needs two-pass grinding, and they also applied the method to determine the wheel position after the wheel wear [10]. Based on analytic geometry, some researchers [11,12] established the mathematical relationship between the wheel position and the flute parameters by a group of highly complex nonlinear equations.…”

Section: Introductionmentioning

confidence: 99%

Wheel path planning for flute grinding of non-cylindrical solid end-mills based on circular arc projection

Ren,

Zhang,

et al. 2024

Preprint

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Flute grinding is a crucial process in solid end-mill manufacturing, because the generated flute parameters, i.e. helix angle, rake angle, core radius, and flute width, have significant effects on the cutting performance of end-mills. However, the flute grinding of non-cylindrical solid end-mills is still challenging due to the variable flute parameters along the tool axis. This paper proposes an accurate and efficient method of wheel path planning for flute grinding of non-cylindrical solid end-mills based on circular arc projection. The wheel path determined by the new method can accurately generate the designed variable helix angle, variable rake angle, variable core radius, and variable flute width. The rake angle is guaranteed by the conjugate condition between the wheel surface and the cutting-edge curve. Equivalent errors of core radius and flute width are introduced in this work based on circular arc projection. The accuracy of the two parameters is ensured by minimizing the sum of squares of the two equivalent errors. Simulations and experiments are conducted to validate the method. Three types of non-cylindrical end-mills i.e. tapered end-mill, tapered barrel end-mill, and barrel end-mill, are considered in the validation. The measured results indicate that the generated flute parameters coincide well with the designed ones at different axial positions of the end-mills.

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Section: Introductionmentioning

confidence: 99%

Wheel path planning for flute grinding of non-cylindrical solid end-mills based on circular arc projection

Ren,

Zhang,

et al. 2024

Preprint

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show abstract

“…The helical surfaces of cutting tools have a complex shaped profile with a concave section, which ensures the of the cutting wedge when cutting into the material being processed [76][77][78][79][80]. Therefore, to find a rational direction for capturing images with a camera, it is important to use the layout of a measuring machine with controlled rotation and movement of the cutting tool relative to the camera.…”

Section: Introductionmentioning

confidence: 99%

New indicators and standards for measuring of the end mill's helical groove by image processing

Pivkin,

Ershov,

Grechishnikov

et al. 2023

Optical Metrology and Inspection for Industrial Applications X

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The studies will be carried out using optical metrology methods on a Walter Helicheck inspection machine in reflected light and a number of images were stored to form a statistical sample. Established new indicators and criteria for grinding efficiency based on image processing of the helical groove of the end mill. As a result, recommendations for the selection of optical control techniques were made for the first time at the intermediate stage of technological preparation for production, in real time, and after processing. In this work, for the first time, we prove the possibility of determining the camera displacement pith distance during continuous scanning of the profile of a helical surface in a radial section, the measurement accuracy and recreating a three-dimensional model of the object. As a result of the work of the new algorithm using the Haar-wavelet with new indicators, it was established that the actual one is located inside the focal zone, which proves the possibility of applied application of the method of monitoring the shape of helical flute of end mills using computer vision. The measurement accuracy of the helical flute increased from 4 to 12% along its profile.

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“…Differently, Xiao et al [8], Tang et al [9] and Jia et al [10] changed the calculation order: the core radius was considered first, followed by the rake angle. Chen et al [11] take the calculation procedure: core radius, groove width and then rake angle.…”

Section: Introductionmentioning

confidence: 99%

Big data-oriented wheel position and geometry calculation for cutting tool groove manufacturing based on AI algorithms

Liu

Lu³

et al. 2022

Int J Adv Manuf Technol

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Groove is a key structure of high-performance integral cutting tools. It has to be manufactured by 5-axis grinding machine due to its complex spatial geometry and hard materials. The crucial manufacturing parameters (CMP) are grinding wheel positions and geometries. However, it is a challenging problem to solve the CMP for the designed groove. The traditional trial-and-error or analytical methods have defects such as time-consuming, limited-applying and low accuracy. In this study, the problem is translated into a multiple output regression model of groove manufacture (MORGM) based on the big data technology and AI algorithms. The input are 34 groove geometry features and the output are 5 CMP. Firstly, two groove machining big data sets with different range are established, each of which is includes 46656 records. They are used as data resource for MORGM. Secondly, 7 AI algorithms, including linear regression, k nearest-neighbor regression, decision trees, random forest regression, support vector regression and ANN algorithms are discussed to build the model. Then, 28 experiments are carried out to test the big data set and algorithms. Finally, the best MORGM is built by ANN algorithm and the big data set with a larger range. The results show that CMP can be calculated accurately and conveniently by the built MORGM.

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Iteration based calculation of position and orientation of grinding wheel for solid cutting tool flute grinding

Cited by 25 publications

References 15 publications

Wheel path planning for flute grinding of non-cylindrical solid end-mills based on circular arc projection

Wheel path planning for flute grinding of non-cylindrical solid end-mills based on circular arc projection

New indicators and standards for measuring of the end mill's helical groove by image processing

Big data-oriented wheel position and geometry calculation for cutting tool groove manufacturing based on AI algorithms

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