Customizing method of drum-taper-shaped ball-end milling cutter

Abstract

The invention provides a customizing method of a drum-taper-shaped ball-end milling cutter, and belongs to the technical field of numerical control milling machining. The customizing method comprisesthe steps that relevant geometrical relationships of the drum-taper-shaped ball-end milling cutter are designed, and cutting parameters of the machining efficiency are taken into consideration, so that relevant geometrical drawings are obtained; then mathematical models are established according to the limitation and restriction relationship of the relevant geometrical relationships; when parameterized customization is conducted, known parameters are brought in the relevant mathematical models, and the barrel-shaped side blade radius range and the cutter bar neck diameter range are calculated;parameters within the barrel-shaped side blade radius range and the cutter bar neck diameter range are manually given, and integers are selected as the parameters; and the rest of parameter values are obtained, and a three-dimensional model of the drum-taper-shaped ball-end milling cutter is established in three-dimensional software UG. The customizing method of the drum-taper-shaped ball-end milling cutter has the advantages that the machining efficiency is improved threefold or severalfold on the basis that the quality of the machined surface is guaranteed, the phenomenon that due to cutterreplacement, cutter connecting marks and cutter replacement errors exist is avoided, systematized and parameterized customization conducted by engineering personnel is facilitated, and the customizing method is quite simple and convenient to use.

Description

technical field [0001] The invention belongs to the technical field of numerically controlled milling and processing curved surfaces, and relates to a method for customizing drum-cone ball-end milling cutters. The invention designs a custom-made method for cutter drum cone-shaped ball-end milling cutters for complex curved surfaces such as new side milling impellers and blisks. For milling, given some cutting parameters in actual processing (cutting maximum inclination angle a, ball head radius r, cutting residual height h, ideal cutting tool line spacing h), the drum-cone milling cutter can be obtained through a mathematical model The method of full parameters, invented the custom method of drum cone milling cutter. Background technique [0002] As typical complex curved surfaces, impellers and blisk blades are widely used in military, aerospace, chemical and other fields. The quality of their CNC machining directly affects their power performance and mechanical efficiency...

AI Technical Summary

Problems solved by technology

Except for some ruled surfaces, most high-performance impellers and integral blisk blades are free-form surfaces with complex shapes, which makes it difficult to calculate the tool position and the non-interference tool axis vector

Mainly manifested in: 1. The curved surface of the blade is complex in shape, mostly composed of free-form surfaces, and generally requires five-axis linkage CNC machine tools to process

2. The structure is complex, the blade has a large twist, the flow channel is deep, and the distance between adjacent blades is small. In addition to the possible interference between the tool and the surface of the blade to be processed, the machining must also consider the occurrence of the tool and the adjacent blade surface. interference situation

3. Under normal circumstances, the cutting efficiency of the traditional standard ball-end cutter is low and cannot meet its requirements

[0005] In the strict machining requirements, standard CNC milling tools cannot meet all situations. For example, in the process of machining impellers, ordinary tools will interfere with machining, so custom-made drum cone milling cutters are required.

The current situation is that every time a drum cone milling cutter is customized, people customize it individually according to their own needs, and they have their own customization standards. However, there is no unified and systematic customization for different cutting conditions. method

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