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Swirler air flow controllable abrasive flow machining method and machining plugging device

A technology of air flow and processing method, which is applied in the direction of metal processing equipment, machine tools suitable for grinding the edge of workpieces, grinding machines, etc. It can solve problems such as unstable processing quality, small size of vortex, and out-of-tolerance parts, so as to avoid The effects of polishing unevenness, improving machining accuracy, and preventing parts from being out of tolerance

Inactive Publication Date: 2020-12-11
AECC AVIATION POWER CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The shortcomings of this method are: the size of the vortex is small, the blades are dense, and it is difficult to polish; it requires a lot of man-hours and wastes time; it is easy to cause the size of the parts to be out of tolerance; the amount of manual grinding is uneven, and the processing quality is unstable, resulting in rework. very likely

Method used

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  • Swirler air flow controllable abrasive flow machining method and machining plugging device
  • Swirler air flow controllable abrasive flow machining method and machining plugging device
  • Swirler air flow controllable abrasive flow machining method and machining plugging device

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Embodiment

[0047] Such as Figure 5 , Figure 6 As shown, the flow range for the vortex is single channel 0.0292-0.03m 3 / s, dual channel 0.0681~0.0701m 3 / s vortex as an example: according to the structure of the vortex, the tooling has been completed, and the initial single-channel and double-channel air flow values ​​are 0.0290m 3 / s, 0.0672m 3 / s. Using processing tooling, the abrasive pressure is 3MPa, and the single-cycle abrasive volume is 2m 3 , the flow rate is 3.28×10 -4 m 3 / s, run 1 cycle under this parameter, and measure and calculate the change of air flow value ΔL s =4.27×10 -4 m 3 / s, ΔL d =1.76×10 -3 m 3 / s. The number of cycles required to calculate the single and dual channels is N s ≈2.3,N d ≈1.7, the number of cycles N required by the vortexer 1 =1.7 cycles, since one cycle has been carried out, it only needs to carry out another 0.7 cycle. After the processing is completed, the air flow values ​​of the inner and outer channels of the vortexer are fi...

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Abstract

The invention discloses a swirler air flow controllable abrasive flow machining method and machining plugging device. The method comprises the steps that: an air flow initial value of a to-be-machinedchannel on a to-be-machined swirler is measured, a variable quantity is determined through a circulating abrasive flow machining method, the maximum machining cycle index is determined according to the air flow maximum value of the channel to be machined and the variable quantity of one-cycle machining, the product of the maximum machining cycle index and the variable quantity of one cycle machining is smaller than the air flow maximum value of the to-be-machined channel, and abrasive flow machining is conducted on the to-be-machined channel according to the maximum machining cycle index, andthe to-be-machined channel is subjected to finish machining till air flow of the to-be-machined channel meets the design requirement. The controllable abrasive flow machining is used, the requirementthat an air flow value of a swirler meets the requirement of a high-precision design drawing can be met, a design flow requirement can be met through one-time machining, repeated rework is not needed, and uniform thinning of the surface of a part flow channel is not needed. The problem of uneven manual polishing and repairing of workers is avoided, and the machining quality stability is improved.

Description

technical field [0001] The method is suitable for abrasive particle flow processing of an engine vortex device, belongs to the field of engine vortex device processing, and specifically relates to a method for processing abrasive particle flow with a controllable air flow rate of a vortex device and a processing plugging device. Background technique [0002] Vortexers are widely used in modern aero-engines, and their main functions are to mix air and fuel into a uniform combustible gas, improve the state of fuel atomization, improve the start-up characteristics of the combustion chamber and the combustion performance under low operating conditions. The swirler air flow value has a significant effect on fuel atomization performance. Typical two-stage vortex air flow is divided into single-channel (inner channel) air flow and dual-channel (inner + outer channel) air flow. The air flow value of the single and double channels of the vortex matches the design flow range, and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B31/116B24B31/12
CPCB24B31/116B24B31/12
Inventor 刘博胡云辉彭颖郑朝砖范毅王琼波王为杨明芸
Owner AECC AVIATION POWER CO LTD
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