Determination method of accurate undeformed cutting thickness for complex path with runout

Abstract

The invention provides a beating complex path-containing method for determining accurate undeformed cutting thickness, comprising the following steps of I, determining a cutter beating parameter and a cutter location path document; II, constructing a cutter location path curvilinear equation according to the cutter location path document, and determining the real movement locus equation of each cutting edge; III, determining cutter location point at any time and the location of the corresponding cutting edge which participates in cutting, determining the current cutting edge which participates in cutting, and judging which cutting edge leaves the material that is subjected to the cutting action of the cutting edge; and IV, solving a crossing point of the current cutting infinitesimal reference line and the cutting edge movement curve, so that the distance from the crossing point to the position point of the current cutting edge which participates in cutting is the exact value of the undeformed cutting thickness. According to the method provided by the invention, the prediction accuracy of the undeformed cutting thickness can be effectively improved, the influence of the cutter beating to the undeformed cutting thickness can be effectively considered, and the model can be applicable to any complex cutter location path tracks.

Description

technical field [0001] The invention belongs to the technical field of prediction of cutting force in mechanical manufacturing and its application, and in particular relates to a method for determining the precise undeformed cutting thickness of a complex path with jumps. Background technique [0002] Numerical control machining technology is the basis of modern manufacturing technology. Its wide application has made ordinary machinery replaced by numerical control machinery, which has brought about fundamental changes in the manufacturing industry. The premise and basis for customization and prediction of processed surface quality. The key factors for accurate prediction of milling force include the identification of cutting force coefficient, the determination of undeformed cutting thickness and the judgment of cutting area. Among them, the determination accuracy of undeformed cutting thickness directly affects the prediction accuracy of milling force. In order to determ...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the defects existing in the prior art, the present invention provides a method for determining the accurate undeformed cutting thickness of complex path with runout, which adopts the real tool position path and cutting edge motion track to solve the undeformed cut thickness with runout , solve the defect of approximation error in the traditional undeformed cutting thickness model, and improve the prediction accuracy of milling force

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