Milling force modeling method for flat-bottom helical end mill
A modeling method and end mill technology, applied in the direction of instrumentation, design optimization/simulation, calculation, etc., can solve problems such as tool wear and affect processing quality, so as to optimize milling processing, improve processing quality and efficiency, and improve processing efficiency. Effect
Active Publication Date: 2018-09-21
HUAZHONG UNIV OF SCI & TECH +1
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Problems solved by technology
From the perspective of the dynamics of the milling process, the relative vibration between the tool and the workpiece during the milling process will cause vibration marks on the machined surface, which not only seriously affects the processing quality but also easily causes tool wear
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[0039] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.
[0040] Referring to the accompanying drawings, a milling force modeling method of a flat-bottomed helical end mill comprises the following steps:
[0041] 1) Build as figure 1 In the cylindrical coordinate system of the helical end mill, the feed direction of the end mill is +x, the direction vertical and far away from the workpiece surface is +y, the tool axis points to the spindle direction i...
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The invention belongs to the field of metal processing and discloses a milling force modeling method for a flat-bottom helical end mill. Based on the model, appropriate milling depth can be selected to optimize processing. The method comprises the main steps that first, the helical end mill is dispersed into fan-shaped column microelements along the circumferential direction; second, cutting edgestress on fan-shaped columns is calculated through a cutting force coefficient; and last, integration is performed on microelement edge stress of a region participating in milling processing to obtaintotal cutting force. Through the model, the influence of axial cutting depth on the cutting force and the fluctuation of the cutting force are analyzed, the cutting coefficient dedicated to the helical end mill is proposed to quickly judge the cutting force fluctuation and simplify cutting force prediction, the milling dynamic model is analyzed based on the cutting force fluctuation, and the mostappropriate milling depth is selected to guide and optimize processing.
Description
technical field [0001] The invention belongs to the field of metal processing, and more specifically relates to a milling force modeling method of a flat bottom helical end mill. Background technique [0002] High-speed cutting technology has the advantages of relatively low cutting force, high machining accuracy, high machined surface quality and low machining cost during machining, so it is widely used in aviation, aerospace, mold, automobile and other fields. In actual processing, the interaction between the cutting edge of the milling cutter and the workpiece is a fast and complex change process, and its force change is the source of all other physical quantity changes. Therefore, the cutting force on the milling cutter is predicted to control the milling force , which is of great significance to improve the processing quality. [0003] Tool path planning is the process of generating tool motion paths based on part models, machining plans, and error requirements. From ...
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Login to View More IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 李曦魏俊立黄伟健陈雨
Owner HUAZHONG UNIV OF SCI & TECH