Ball-end mill cutter five-axis machining instantaneous cutting thickness solution method

Abstract

The invention discloses a ball-end mill cutter five-axis machining instantaneous cutting thickness solution method. The method comprises the following steps: (1) a three-dimensional ball-end mill cutter model is established according to ball-end mill cutter parameters, and a three-dimensional workpiece model is established according to workpiece parameters; the mill parameters are set with the ball-end mill cutter model acting as the tool body and the workpiece model acting as the object, and the real three-dimensional machined surface model is obtained by Boolean subtraction; (2) the auxiliary entity is established based on the instantaneous cutting thickness theory; (3) the instantaneous cutting thickness entity after Boolean intersection operation of the auxiliary entity and the machined surface model under the same mill parameters is solved; (4) and the instantaneous cutting thickness of the ball-end mill cutter is calculated by using datum plane discretization according to the cutting thickness entity model. The intersection entity three-dimensional model of the auxiliary entity and the machined surface is established through the Boolean operation method and the instantaneouscutting thickness is obtained so that the theory is simple, the solution efficiency is high and the engineering application value is high.

Description

technical field [0001] The invention relates to a method for solving machining and cutting thickness in the field of processing, in particular to a method for solving instantaneous cutting thickness for five-axis machining of a ball end milling cutter. Background technique [0002] As the core content of the physical simulation research of milling, predicting the cutting force of the ball-end milling cutter during the machining process is an important basis for ensuring machining accuracy and improving cutting stability, and accurately modeling the instantaneous cutting thickness of the ball-end milling cutter It is the key to accurately predict cutting force. However, the milling process of the ball end milling cutter is very complex, there are interrelated processing parameters, and the complex geometry of the ball end of the ball end milling cutter, the constantly changing cutting characteristics along the cutting edge, the tool and the workpiece when the milling cutter c...

AI Technical Summary

Problems solved by technology

However, the milling process of the ball end milling cutter is very complex, there are interrelated processing parameters, and the complex geometry of the ball end of the ball end milling cutter, the constantly changing cutting characteristics along the cutting edge, the tool and the workpiece when the milling cutter cuts along the cutting path The ever-changing contact surface, the vibration between the tool and the contact surface, etc., make it difficult to accurately model the instantaneous cutting thickness of the ball end milling cutter

At present, there is an instantaneous cutting thickness calculation method based on the modeling of the contact area between the tool and the workpiece, but this type of method only considers the current cutting edge and ignores the influence of the previous cutting edge on the cutting thickness, and cannot accurately solve five-axis machining. Instantaneous cutting thickness in

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