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Supersonic shot-peening forming method for single or double curvature integral panels

An integral wall plate and shot peening forming technology, applied in abrasive jet machine tools, abrasives, metal processing equipment, etc., can solve the problems of complex structure of shot peening system, rough metal plate, affecting surface quality, etc., to achieve strong operability, Good molding accuracy and good surface smoothness

Inactive Publication Date: 2012-06-27
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the technical equipment is simple and can improve the fatigue resistance of parts while forming, the existing shot peening technology will roughen the sprayed surface of the metal sheet and affect the surface quality, and due to the complexity of the shot peening mechanism This leads to complex process analysis, so the current selection of shot peening parameters mainly depends on experimental data and operating experience, which is time-consuming and costly, and the existing shot peening system structure is very complicated, and the shot must be recovered and cleaned after each shot peening , grading and particle removal, the broken particles in the shot peening process will also cause certain pollution

Method used

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  • Supersonic shot-peening forming method for single or double curvature integral panels
  • Supersonic shot-peening forming method for single or double curvature integral panels
  • Supersonic shot-peening forming method for single or double curvature integral panels

Examples

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Effect test

Embodiment 1

[0028] The ultrasonic shot-peening forming method of tapered integral wall plate, it comprises the following steps: utilize ultrasonic shot-peening equipment, such as figure 1 with figure 2 As shown, the described ultrasonic shot peening equipment includes an ultrasonic generator 1 and an impact gun 2, and the described impact gun 2 is installed on the side of the CNC machine tool spindle 3, and the described impact gun 2 includes an ultrasonic transducer 2-1, and The horn 2-2 connected to the ultrasonic transducer 2-1, the vibration tool head 2-3 connected with the horn 2-2-, and the striker 2-4 installed on the vibration tool head 2-3;

[0029] Before the ultrasonic shot peening, use the striker 2-4 to perform tool setting, and then set the forming trajectory of the tapered integral wall plate according to the shape requirements of the tapered integral wall plate, such as image 3 As shown, and on the CNC machine tool, the numerical control program corresponding to the for...

Embodiment 2

[0033] The ultrasonic shot-peening forming method of convex peak-shaped integral wall plate, it comprises the following steps: utilize ultrasonic shot-peening equipment, such as figure 1 with figure 2 As shown, the described ultrasonic shot peening equipment includes an ultrasonic generator 1 and an impact gun 2, and the described impact gun 2 is installed on the side of the CNC machine tool spindle 3, and the described impact gun 2 includes an ultrasonic transducer 2-1, and The horn 2-2 connected to the ultrasonic transducer 2-1, the vibration tool head 2-3 connected to the horn 2-2, and the striker 2-4 installed on the vibration tool head 2-3;

[0034]Before the ultrasonic shot peening, the striker 2-4 is used for tool setting, and then the forming trajectory of the convex-shaped integral wall panel is set according to the requirements of the forming shape of the convex-shaped integral wall panel, such as Figure 4 shown, and on the numerically controlled machine tool, the...

Embodiment 3

[0038] The ultrasonic shot-peening forming method of the curved integral wall plate comprises the following steps: utilizing ultrasonic shot-peening equipment, such as figure 1 and figure 2 As shown, the described ultrasonic shot peening equipment includes an ultrasonic generator 1 and an impact gun 2, and the described impact gun 2 is installed on the side of the CNC machine tool spindle 3, and the described impact gun 2 includes an ultrasonic transducer 2-1, and The horn 2-2 connected to the ultrasonic transducer 2-1, the vibration tool head 2-3 connected to the horn 2-2, and the striker 2-4 installed on the vibration tool head 2-3;

[0039] Before the ultrasonic shot peening, the striker 2-4 is used for tool setting, and then the forming track of the bent integral wall plate is set according to the requirements of the formed shape of the bent integral wall plate, such as Figure 5 and Image 6 As shown, and on the CNC machine tool, the numerical control program correspon...

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Abstract

The invention discloses a supersonic shot-peening forming method for single and double curvature integral panels. According to the invention, a supersonic shot-peening forming device is utilized, different forming loci are set according to integral panel forming shape demands, and a numerical control program corresponding to the forming loci is compiled on a numerical control machine tool to make the main shaft of the machine tool move according to the compiled numerical control program and control the movement of an impact gun (2). A supersonic transducer (2-1) is utilized to transmit oscillation electric signals generated by a supersonic generator (1) to longitudinal wave mechanical oscillation with the frequency same as the frequency of the signals, minimal amplitudes are amplified through an amplitude transformer (2-2), panel surfaces are impacted by means of firing pins (2-4) on an oscillation tool head (2-3) according to the forming loci to make the panels project, be bent and be formed in the impact direction to obtain the single or double curvature integral panels with different curvatures. The method which has the advantages of strong maneuverability, high working efficiency, high forming precision and wide application range can be used for processing the single or double curvature integral panels with different curvatures, different shapes and highly required precision in the aerospace industry.

Description

[0001] technical field [0002] The invention relates to the field of mechanical manufacturing, and particularly designs a method for forming single- and double-curvature integral wallboards based on high-energy ultrasonic shot blasting forming technology. Background technique [0003] The forming process of integral wall panels is widely used in aviation and defense industries. It has the characteristics of high strength-to-weight ratio, good overall and local stability, accurate shape, and long fatigue life. Therefore, it has become a high-efficiency method commonly used in modern aircraft The structure is an important symbol to measure the advanced level of the aircraft. With the continuous improvement of the flight speed and load of modern aircraft, the requirements for the strength of the overall panel are getting higher and higher, and at the same time, the difficulty of forming the overall panel is increased. The traditional integral panel forming technologies such a...

Claims

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Application Information

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IPC IPC(8): B24C3/32
Inventor 鲁世红高琳王德亮陈维金斌林明路付裕
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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