CN112179799A - Experimental method for rapidly testing milling performance of composite material - Google Patents
Experimental method for rapidly testing milling performance of composite material Download PDFInfo
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- CN112179799A CN112179799A CN202011007925.0A CN202011007925A CN112179799A CN 112179799 A CN112179799 A CN 112179799A CN 202011007925 A CN202011007925 A CN 202011007925A CN 112179799 A CN112179799 A CN 112179799A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/58—Investigating machinability by cutting tools; Investigating the cutting ability of tools
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0053—Cutting or drilling tools
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0298—Manufacturing or preparing specimens
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Abstract
An experimental method for rapidly testing milling performance of a composite material. Decoupling a long fiber woven composite material, selecting a unidirectional composite material with the same component, and processing the unidirectional composite material into a plate-shaped sample with a regular polygon cross section; milling all processing paths in sequence along the outer contour line of the plate-shaped sample by using a milling cutter; and calculating the milling force under various milling angle changes through comprehensive analysis of the milling force signals of all the processing paths, and comparing and detecting the processing quality of different processing surfaces. The invention can realize milling test experiments in various angle ranges. The simultaneous test of various angle processing experiments can be completed by only preparing one sample. The method actually combines the test experiment and the experiment sample, can avoid various human errors in the experiment process, saves the experiment times and improves the experiment precision.
Description
Technical Field
The invention belongs to the technical field of aviation precision manufacturing and machining, and particularly relates to a rapid test experimental method for milling machining performance of a composite material.
Background
With the development of aerospace technology, how to reduce the processing cost of aircraft parts and improve the processing efficiency of aviation materials becomes an important issue in the aviation industry. In the processing and manufacturing of aerospace materials, the development of aerospace manufacturing technology is severely restricted by the complex fiber weaving structure and the high processing cost of the anisotropic composite material for fiber reinforcement/toughening. The milling experiment is an important test means for researching the machining performance of the material. In the research process, a mechanical processing experiment is generally needed to be carried out on the surface of the material, and the influence mechanism of the cutting force and the surface quality in the anisotropic material processing process is researched through the change of the cutting angle.
The traditional experimental method generally needs to prepare experimental sample blocks with various quantities and angles, the sample preparation is complex, and the experimental process is complicated. In addition, in the traditional experiment process, the sample needs to be repeatedly positioned, clamped, subjected to tool setting and trial cut so as to complete the test experiment of each angle. Obviously, the experimental method has more interference factors and larger personal errors in the experiment, and the experimental data has larger fluctuation and more difficult experimental analysis in the subsequent data analysis.
Disclosure of Invention
In order to solve the problems, the invention aims to provide an experimental method for rapidly testing the milling performance of a composite material.
In order to achieve the aim, the experimental method for rapidly testing the milling performance of the composite material, provided by the invention, comprises the following steps in sequence:
1) decoupling the long fiber woven composite material, selecting a unidirectional composite material with the same component, processing the unidirectional composite material into a plate-shaped sample with a regular polygon cross section, simultaneously processing a positioning hole in the middle, and fixing the plate-shaped sample on a force measuring device of a numerical control machine by using the positioning hole;
2) setting a milling cutter processing path and processing parameters on a numerical control machine tool, then sequentially finishing the milling of all the processing paths by using the milling cutter along the outer contour line of the plate-shaped sample, and recording a complete milling force signal in the milling process;
3) the milling force under various milling angle changes is calculated through comprehensive analysis of milling force signals of various processing paths, the plate-shaped sample is taken down, the processing quality of different processing surfaces is contrasted and detected, and finally, a rapid test experiment of the milling performance of the composite material is completed.
4. In step 1), the number of edges of the regular polygon is represented by a formula
And calculating, wherein theta is a subdivided angle of the grinding experiment.
In step 2), each side surface of the plate-shaped sample is a processing path.
In the step 2), the milling process of the milling cutter comprises forward milling and reverse milling; milling angles include, but are not limited to, 0 °, 30 °, 45 °, 60 °, 90 °, 120 °, 135 °, 180 °.
The rapid test experimental method for the milling performance of the composite material provided by the invention has the advantages and positive effects that: according to the experiment requirements, the milling test experiment in various angle ranges can be realized through the specially designed regular polygon experiment path and the subdivision of the cutting angle. The simultaneous test of various angle processing experiments can be completed by only preparing one sample. In addition, the method can flexibly adjust the number of the regular polygons, and the milling force and the surface quality characteristics processed along all directions can be completely obtained by one-time feeding of the milling cutter through the milling experiment along the outer contour lines of the regular polygons, so that the test experiment can be completed quickly and accurately. The method actually combines the test experiment and the experiment sample, can avoid various human errors in the experiment process, saves the experiment times and improves the experiment precision.
Drawings
FIG. 1 is a flow chart of an experimental method for rapidly testing milling performance of a composite material provided by the invention.
Fig. 2 shows a regular polygon feed path when the rapid test method for milling performance of composite materials provided by the invention is used for carrying out experiments.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without any creative efforts shall fall within the protection scope of the present invention.
As shown in fig. 1, the experimental method for rapidly testing the milling performance of the composite material provided by the invention comprises the following steps in sequence:
1) decoupling a long fiber woven composite material, selecting a unidirectional composite material with the same component, processing the unidirectional composite material into a plate-shaped sample 1 with a regular polygon cross section as shown in figure 2, simultaneously processing a positioning hole 2 in the middle, and fixing the plate-shaped sample 1 on a force measuring device of a numerical control machine by using the positioning hole 2; in this embodiment, the regular polygon is a regular octagon;
2) setting a milling cutter processing path and processing parameters on a numerical control machine tool, then sequentially finishing the milling of all the processing paths by using a milling cutter 3 along the outer contour line of a plate-shaped sample 1, and recording a complete milling force signal in the milling process; one processing path is provided for each side of the plate-like test piece 1. The milling process of the milling cutter 3 comprises forward milling and reverse milling; in the embodiment, eight paths including path 1-path 8 are set on the plate-shaped sample 1 with the regular octagonal cross section, and the milling angles of 0 degrees, 45 degrees, 90 degrees, 135 degrees and 180 degrees are covered at the same time;
3) the milling force under various milling angle changes is calculated through comprehensive analysis of milling force signals of various processing paths, the plate-shaped sample 1 is taken down, the processing quality of different processing surfaces is contrasted and detected, and finally, a rapid test experiment of the milling performance of the composite material is completed.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any minor modifications, equivalent replacements and improvements made to the above embodiment according to the technical spirit of the present invention should be included in the protection scope of the technical solution of the present invention.
Claims (4)
1. A rapid test experimental method for milling performance of a composite material is characterized by comprising the following steps: which comprises the following steps carried out in sequence:
1) decoupling a long fiber woven composite material, selecting a unidirectional composite material with the same component, processing the unidirectional composite material into a plate-shaped sample (1) with a regular polygon cross section, simultaneously processing a positioning hole (2) in the middle, and fixing the plate-shaped sample (1) on a force measuring device of a numerical control machine by using the positioning hole (2);
2) setting milling cutter processing paths and processing parameters on a numerical control machine tool, then sequentially finishing milling of all the processing paths along the outer contour line of the plate-shaped sample (1) by using the milling cutter (3), and recording complete milling force signals in the milling process;
3) the milling force under various milling angle changes is calculated through comprehensive analysis of milling force signals of various processing paths, the plate-shaped sample (1) is taken down, the processing quality of different processing surfaces is detected through comparison, and finally, a rapid test experiment of the milling performance of the composite material is completed.
2. The composite material milling processing performance rapid test experimental method according to claim 1, characterized in that: in step 1), the number of edges of the regular polygon is represented by a formula
And calculating, wherein theta is a subdivided angle of the grinding experiment.
3. The composite material milling processing performance rapid test experimental method according to claim 1, characterized in that: in the step 2), each side surface of the plate-shaped sample (1) is a processing path.
4. The rapid milling performance method of composite materials according to claim 1, characterized in that: in the step 2), the milling process of the milling cutter (3) is forward milling and reverse milling; milling angles include, but are not limited to, 0 °, 30 °, 45 °, 60 °, 90 °, 120 °, 135 °, 180 °.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011007925.0A CN112179799A (en) | 2020-09-23 | 2020-09-23 | Experimental method for rapidly testing milling performance of composite material |
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| CN202011007925.0A CN112179799A (en) | 2020-09-23 | 2020-09-23 | Experimental method for rapidly testing milling performance of composite material |
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Citations (6)
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|---|---|---|---|---|
| CN103760049A (en) * | 2014-01-14 | 2014-04-30 | 上海飞机制造有限公司 | Sample structure for cutting test and cutting test method |
| CN104942349A (en) * | 2015-06-30 | 2015-09-30 | 哈尔滨理工大学 | Optimal selection method of quenched steel milling cutter, vehicle door milling method and convex curved surface test piece |
| CN105675491A (en) * | 2016-02-04 | 2016-06-15 | 华侨大学 | Single abrasive particle scratching and quick stop testing method in which hard and brittle test piece is pre-maintained through complementary standard method |
| CN105738240A (en) * | 2016-02-29 | 2016-07-06 | 上海交通大学 | Quality evaluation method of CFRP cut and machined surface at full-range fiber orientation angle |
| CN105758756A (en) * | 2016-02-29 | 2016-07-13 | 上海交通大学 | Construction method for cutting specific energy spectrum of carbon fiber reinforced composite |
| EP3352031A1 (en) * | 2017-01-20 | 2018-07-25 | Go2Cam International | Method for determining the path of a milling tool for machining a workpiece before the finished step |
-
2020
- 2020-09-23 CN CN202011007925.0A patent/CN112179799A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760049A (en) * | 2014-01-14 | 2014-04-30 | 上海飞机制造有限公司 | Sample structure for cutting test and cutting test method |
| CN104942349A (en) * | 2015-06-30 | 2015-09-30 | 哈尔滨理工大学 | Optimal selection method of quenched steel milling cutter, vehicle door milling method and convex curved surface test piece |
| CN105675491A (en) * | 2016-02-04 | 2016-06-15 | 华侨大学 | Single abrasive particle scratching and quick stop testing method in which hard and brittle test piece is pre-maintained through complementary standard method |
| CN105738240A (en) * | 2016-02-29 | 2016-07-06 | 上海交通大学 | Quality evaluation method of CFRP cut and machined surface at full-range fiber orientation angle |
| CN105758756A (en) * | 2016-02-29 | 2016-07-13 | 上海交通大学 | Construction method for cutting specific energy spectrum of carbon fiber reinforced composite |
| EP3352031A1 (en) * | 2017-01-20 | 2018-07-25 | Go2Cam International | Method for determining the path of a milling tool for machining a workpiece before the finished step |
Non-Patent Citations (3)
| Title |
|---|
| CHANGYING WANG ET AL: "Machinability characteristics evolution of CFRP in a continuum of fiber orientation angles", 《MATERIALS AND MANUFACTURING PROCESSES》 * |
| 吴雪峰等: "曲面铣削过程加工路径对切削力和磨损的影响研究", 《工具技术》 * |
| 王玲: "模具曲面加工中各参数与切削力及表面质量关系研究", 《中国优秀博硕士学位论文全文数据库(硕士) 工程科技Ⅰ辑》 * |
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