Method for calculating milling load of ball-end milling cutter
A ball-end milling cutter, milling technology, applied in the direction of milling cutter, calculation, milling machine equipment, etc.
Active Publication Date: 2012-07-18
HUST WUXI RES INST
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[0004] The purpose of the present invention is to provide a method for calculating the milling load of a ball nose milling cutter in view of the defects existing in the existing milling force modeling, which can obtain the instantaneous relationship between the cutting edge of the tool and the workpiece when the tool is tilted and tilted forward. Cutting state and cutting thickness, so as to realize the prediction of cutting force in five-axis milling
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[0022] The acceptance scheme of the present invention will be described in further detail below in conjunction with the drawings and examples, but the examples are not intended to limit the present invention.
[0023] The parameters of the ball end milling cutter adopted in the present invention are as follows: 10 millimeters in diameter, 4 blades, 30 degrees of helix angle, the machined surface is a plane, the cutting method adopts the groove milling method, the cutting depth is 1 millimeter, and the feed of each tooth is 0.1 mm.
[0024] Such as figure 1 As shown, the method for calculating the milling load of the ball end milling cutter of the present invention comprises the following steps:
[0025] 1. Obtain the relative position parameter model of the tool and the workpiece;
[0026] Such as figure 2 As shown, T is the tool axis direction, the cutting feed direction is the same as the X axis direction, the inclination direction and angle of the tool are shown in the ...
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The invention discloses a method for calculating the milling load of a ball-end milling cutter, and the method comprises the following steps of: obtaining a relative position parameter model of the cutter and a workpiece, and determining all cutter micro-units participating in cutting according to the relative position parameter model of the cutter and the workpiece, calculating the cut-in angle, the cut-out angle and the instantaneous cutting thickness of each side-tilting milling micro-unit participating in cutting, calculating the cut-in angle, the cut-out angle and the instantaneous cutting thickness of each forward-tilting milling micro-unit participating in cutting each involved cutting, superimposing the instantaneous cutting thickness of each side-tilting milling micro-unit and the instantaneous cutting thickness of each forward-tilting milling micro-unit participating in cutting so as to obtain the instantaneous cutting thickness of a cutter micro-unit, and summing the instantaneous cutting thickness of all cutter micro-units participating in cutting so as to obtain the instantaneous milling load of the ball-end milling cutter. With the method of the invention, the instantaneous cutting state of a cutting edge and the workpiece and the cutting thickness can be obtained during side-tilting and forward-tilting milling of the cutter, so that predication about a cutting force during five-axis milling processing can be realized.
Description
technical field [0001] The invention relates to the technical field of computer numerical control machining, in particular to a method for calculating the milling load of a ball end milling cutter in five-axis numerical control machining. Background technique [0002] Five-axis milling with ball end milling cutter is the main technical method for the finishing of aero-engine impellers, blade-like space surfaces and mold-like complex surfaces. Due to the complexity of the part, it is often necessary to change the axis direction of the tool to avoid interference. In order to predict the cutting force of the five-axis milling process and reduce the deformation and vibration during the machining process, it is first necessary to calculate the instantaneous cutting thickness of the workpiece cut by the milling cutter. [0003] The milling force modeling of ball end milling cutter generally divides the tool into several disc-shaped tool elements along the axis direction, and calc...
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IPC IPC(8): B23C5/00G06F19/00
Inventor 丁汉黄涛张小明张小俭
Owner HUST WUXI RES INST