A stable machining method for closed-angle structures
A technology with a stable structure and a processing method, which is applied in the direction of metal processing equipment, manufacturing tools, milling machine equipment, etc., can solve the problem of small cutting volume and achieve the effect of reducing processing efficiency and efficient processing
Active Publication Date: 2021-01-05
CHENGDU AIRCRAFT INDUSTRY GROUP
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Problems solved by technology
However, this type of tapered ball end milling cutter allows a smaller cutting amount, so it is necessary to accurately calculate the residual size to ensure stable cutting
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[0024] The present invention will be further described in detail below in conjunction with examples, but the embodiments of the present invention are not limited thereto.
[0025] In the present invention, the normal processing is the closed-angle structure of parts processed by the existing closed-angle structure processing method; the closed-angle structure is a structure in which the angle formed by the web and the template is an acute angle, and the template and the template The surface connecting the web and forming an acute angle is called the inner surface 1; the surface connecting the web and the template and forming an acute angle is called the web surface 2.
[0026] Such as figure 1 As shown, the closed-angle structure of the part is processed vertically with a three-degree-of-freedom end mill, and then it is processed with a five-degree-of-freedom end mill with a 5-degree-of-freedom end mill. Before using the end mill 5 five-degree-of-freedom end mill to process t...
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The invention discloses a closed angle structure stable machining method. In the five-freedom-degree machining process, the danger residual width IC is calculated according to the size of the closed angle structure, and whether danger residual is generated or not is judged; if the danger residual is generated, when machining is carried out at the danger residual height hC, cutters are layered in the radial direction, and it is ensured that the distance from first cut of the cutters to the final machining surface surpasses hC.cos Psi. According to the closed angle structure stable machining method, the cutting amount for machining the bottom end of the closed angle structure of the long cutters can be effectively controlled, the situation that due to the fact that the cutting amount is toolarge, machining is not stable, and due to the too small cutting amount, or excessive vain cut, the machining efficiency is reduced can be avoided, and it is ensured that the closed angle structure ismachined efficiently at the stable premise.
Description
technical field [0001] The invention relates to the technical field of closed-angle structure processing of parts, in particular to a stable processing method for closed-angle structures. Background technique [0002] The closed-angle structure is a structure in which the angle between the inner surface of the part and the web surface is less than 90°. With the development of aerospace structural parts manufacturing technology, because aircraft structural parts are developing in the direction of integration, large-scale, and theoretically complex shapes, almost all double-sided parts have at least one closed angle, and many parts have partial closed angles. big case. [0003] In the NC machining process of closed-angle structure, when the depth of the closed-angle structure is large, if the end mill is used for three-degree-of-freedom tool vertical machining, and then the end mill is used for five-degree-of-freedom tool swing angle machining without Carrying out radial lay...
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IPC IPC(8): B23C3/00
CPCB23C3/00
Inventor 刘翘楚崔雅文廖双权牛印熊航杨玲
Owner CHENGDU AIRCRAFT INDUSTRY GROUP