Method for machining aircraft skin sinkage features
A technology for aircraft skin and processing methods, which is applied in metal processing equipment, metal processing mechanical parts, manufacturing tools, etc., can solve the problems of low CNC milling efficiency and pollute the environment, so as to improve life, avoid environmental pollution, and reduce vibration and impact. Effect
Active Publication Date: 2016-03-23
JIANGXI HONGDU AVIATION IND GRP
View PDF9 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] Aiming at the polluted environment of characteristic milling of aircraft skin sag and the low efficiency of CNC milling, the invention proposes a method for processing aircraft skin sag characteristics, which can effectively reduce the number of times of tool entry and exit, and improve processing efficiency
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0033] The present invention is further illustrated below in conjunction with the accompanying drawings and examples.
[0034] Select a typical sagging feature of aircraft skin (such as figure 1 Shown) as an example, the technical method of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0035] The described skin sag feature processing method comprises the following specific steps:
[0036] Step 1. According to the design requirements, determine the milling tool parameters (such as figure 2 shown):
[0037] (1) Determine the radius r of the bottom corner of the tool according to the bottom angle surface Bottom_Angle of the skin depression, that is, the radius r of the bottom corner of the tool is equal to the radius of the bottom corner surface of the depression.
[0038] (2) Determine the tool radius R according to the design step tool difference requirements 1 , the specific method is as follows:
[0039] a. Calc...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a method for machining aircraft skin sinkage features. The method for machining the aircraft skin sinkage features is characterized by comprising the following specific steps that first, the step cutter difference of the skin sinkage features is calculated to obtain the radius R1 of a milling cutter according to design requirements; second, a milling step pitch Dis is determined; third, the milling track of the cutter is determined according to the shortest milling path, wherein the milling track of a sinkage bottom angle face is determined firstly and then the milling track of a sinkage bottom face is determined; fourth, the cutter feeding points and the cutter retracting points of the milling track of the sinkage bottom angle face and the milling track of the sinkage bottom face are set, and one single sinkage feature is machined; fifth, according to the principle that the milling path is shortest, multiple sinkage features are machined from bottom to top according to a z-shaped route; and sixth, machining of the skin sinkage features is detected. According to the method, the frequency of cutter feeding and cutter retracting can be effectively reduced, the machining efficiency is improved, and vibration shock is lowered.
Description
technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a method for processing aircraft skin sag features. Background technique [0002] At present, chemical milling is generally used in the precise manufacturing of skin sag features, but chemical milling has disadvantages such as environmental pollution, high energy consumption, and the consumed aluminum cannot be recycled. A small number of skin sag features are processed by numerical control, and the program generally uses helical milling. The number of feeds and retracts and empty strokes are large, and the processing efficiency is low. During the processing, the processing performance of the equipment is not stable enough, and there are sudden changes in feed speed and direction. If the situation, impact on the tool and the spindle, affecting the service life of the tool. Contents of the invention [0003] Aiming at the polluted environment of characteristic mil...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): B23C3/00B23Q17/20
Inventor 向兵飞黄晶徐明周造文蒙志凌张欢刘彤廖翔王建军
Owner JIANGXI HONGDU AVIATION IND GRP