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Ultrasonic combined adaptive anti-fatigue precision machining system and method of multi-curvature curved surface

A precision-machined, multi-curvature technology

Active Publication Date: 2018-09-04
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical task of the present invention is to provide a multi-curvature surface ultrasonic composite self-adaptive anti-fatigue precision machining system and method to solve how to process the curved surface of key parts with multi-curvature surface, to ensure the anti-fatigue of parts with multi-curvature surface performance problem

Method used

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  • Ultrasonic combined adaptive anti-fatigue precision machining system and method of multi-curvature curved surface
  • Ultrasonic combined adaptive anti-fatigue precision machining system and method of multi-curvature curved surface
  • Ultrasonic combined adaptive anti-fatigue precision machining system and method of multi-curvature curved surface

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Embodiment 1

[0052] as attached figure 1 As shown, the multi-curvature surface ultrasonic composite self-adaptive anti-fatigue precision machining system of the present invention has a structure including a flexible grinding head device and a control unit, and the control unit is electrically connected to and controls the flexible grinding head device, the ultrasonic coupling agent circulation structure and the impact The vibration structure, the flexible grinding head device is used to process the multi-curvature surface of the parts, and the control unit is used to control the working state of the flexible grinding head device;

[0053] The flexible grinding head device includes a flexible adjustment box 17, an ultrasonic coupling agent circulation structure and an impact vibration structure. The impact vibration structure is installed in the flexible adjustment box 17. The flexible adjustment box 17 is composed of two parallel sides and an arc-shaped bottom surface. The U-shaped semi-cl...

Embodiment 2

[0057] The ultrasonic composite self-adaptive anti-fatigue precision machining method based on the multi-curvature surface of embodiment 1, the method comprises the following steps:

[0058] (1), turn on the power supply 26, and supply power to the piezoelectric wafer 12 and the single-chip microcomputer 20 through the cable 16;

[0059] (2) After the piezoelectric wafer 12 is energized, it produces longitudinal reciprocating telescopic movement and outputs ultrasonic waves. The energy of the ultrasonic waves is transmitted to the steel ball 9 in the flexible adjustment box 17. The steel ball 9 is formed on the flexible adjustment box 17 and the protective film 11. The high-speed vibration in the cavity of the piezoelectric wafer 12 amplifies the output amplitude to more than 100 microns;

[0060] (3) At the same time, the couplant flows into the servo motor 32 and the couplant flows into the screw pump 33, and the ultrasonic couplant 7 enters the flexible adjustment box 17 an...

Embodiment 3

[0067] The invention takes the engine valve (the material is the nickel-based superalloy Inconel751), which is a key component with a typical multi-curvature complex surface, as the processing object. The invention can improve the precision machining efficiency and fatigue strength of the valve. Based on the flexible grinding head polishing technology Combined with ultrasonic vibration strengthening technology to develop anti-fatigue self-adaptive precision machining technology for complex curved surfaces, conduct research on the material removal mechanism and the formation mechanism of the machined surface under the synergistic effect of ultrasonic vibration and flexible grinding, and reveal the strengthening mechanism of the surface; From the anti-fatigue performance of the surface after anti-fatigue precision machining, a bridge is built between the processing technology and the service performance of the surface and even the fatigue life. The invention can solve the common ...

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Abstract

The invention discloses an ultrasonic combined adaptive anti-fatigue precision machining system and method of a multi-curvature curved surface, and belongs to the field of mechanical precision machining common technologies. The ultrasonic combined adaptive anti-fatigue precision machining system and method of the multi-curvature curved surface aim to solve the technical problem of how to machine acurved surface of a key part with the multi-curvature curved surface while guaranteeing that the part has the anti-fatigue performance of a part with the multi-curvature curved surface. According tothe adopted technical scheme, the ultrasonic combined adaptive anti-fatigue precision machining system structurally comprises a flexible grinding head device and a control unit. The control unit is electrically connected with and has control over the flexible grinding head device, an ultrasonic coupling agent circulation structure and an impact vibration structure. The flexible grinding head device is used for machining the multi-curvature curved surface of the part. The control unit is used for having control over the working state of the flexible grinding head device. The flexible grinding head device comprises a flexible adjustment box body, the ultrasonic coupling agent circulation structure and the impact vibration structure. The impact vibration structure is arranged in the flexibleadjustment box body. The interior of the flexible adjustment box body communicates with the ultrasonic coupling agent circulation structure. The invention further discloses the ultrasonic combined adaptive anti-fatigue precision machining method of the multi-curvature curved surface.

Description

technical field [0001] The invention belongs to the common technical field of mechanical precision machining, in particular to an ultrasonic compound self-adaptive anti-fatigue precision machining system and method of multi-curvature surfaces. Background technique [0002] With the continuous improvement of product performance requirements, more and more key components with multi-curvature surfaces are widely used in many important fields such as aerospace, national defense, biomedicine, etc. How to process the surfaces of key components with multi-curvature surfaces , ensuring the anti-fatigue performance of parts with multi-curvature surfaces is an urgent technical problem to be solved. [0003] For example, valves are widely used in internal combustion engines of various transportation vehicles (automobiles, tractors, diesel locomotives, etc.), mining, petroleum, construction and engineering machinery, agricultural and forestry machinery, power stations and military equip...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B19/00B24B55/02B24B41/00B24B41/04
CPCB24B19/00B24B41/00B24B41/04B24B55/02Y02P70/10
Inventor 杜劲郝甜妹王立国王一飞
Owner QILU UNIV OF TECH
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