Geometric analysis of composite cutting tools with replaceable polyhedral plates

Petrushin, S. I.; Gubaidulina, R. Kh.; Bakanov, Alexander; Makhov, A. V.

doi:10.3103/s1068798x09060148

Cited by 1 publication

(1 citation statement)

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“…The insert rotates around the local axes to achieve the desired position in the global coordinate system associated with the tool body [7]. Formulas for discrete geometric analysis of indexed insert tools have been proposed [8]. Their use makes it possible to determine the geometry of indexable inserts in a static coordinate system and thus improve the design of tools because the blades' geometrical parameters affect the quality of processing and stability of the tool [9], chip curling and shredding [10].…”

Section: Literature Reviewmentioning

confidence: 99%

Effect of Insert Angles on Cutting Tool Geometry

Shvets

Astakhov²

2020

JES

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An analysis of publications has shown that mechanically clamped indexable inserts are predominantly used in modern tool manufacturing. Each insert has its shape and geometry in the tool coordinate system. The static system’s required geometry is achieved by the tilting of the insert pocket in the radial and axial directions. Therefore, it is of great importance in the tool design to know the relationships between the insert’s geometry parameters in the tool coordinate system where the geometry paraments of the insert are defined and working geometry parameters of the tool defined in the static coordinate system. The paper presents the developed methodology for determining the insert pocket base surface position to ensure the required values of the tool geometry parameters of the selected indexable insert in the static coordinate system. The graphs of the dependence of each of the angles of the insert geometry on the angles of rotation of this insert in the front and profile planes are presented as the level lines for practical use. Using these graphs, one can optimize all geometric insertion parameters in the static coordinate system. The model of the calculations of the mechanism of the insert clamping by a screw is developed. The basic size and tolerance of the output link determine the distance from the intersection line of the base surfaces to the thread axis on the pocket and the minimum amount of the screw stroke on the insert clamping in the pocket. Keywords: indexable insert, cutting tool, coordinate system, base surfaces, geometric parameters.

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