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Process method for enhancing the milling rigidity of aluminum alloy ultra-thin blade overall impeller

A technology of integral impeller and process method, applied in metal processing equipment, milling machine equipment, manufacturing tools, etc., can solve problems affecting the quality and performance stability of the impeller and impeller components, missing blades, undercutting and overcutting of blade surface contours, etc. , to achieve the effect of improving surface quality, reducing vibration and improving cutting efficiency

Inactive Publication Date: 2017-03-08
SHANGHAI INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the traditional cutting process is used to process this kind of ultra-thin blade integral impeller, due to the influence of cutting heat, cutting force, vibration and metal fiber fracture, the front and rear edges of the blade often appear torn, cracked, and the blade surface contour is seriously caused by undercut and overcut. cutting phenomenon, or even missing blades, which seriously affects the quality and performance stability of the overall impeller and impeller components

Method used

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  • Process method for enhancing the milling rigidity of aluminum alloy ultra-thin blade overall impeller
  • Process method for enhancing the milling rigidity of aluminum alloy ultra-thin blade overall impeller
  • Process method for enhancing the milling rigidity of aluminum alloy ultra-thin blade overall impeller

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Embodiment Construction

[0023] The present invention will be further described below according to the accompanying drawings.

[0024] A process method for enhancing the milling rigidity of an integral impeller of an aluminum alloy material ultra-thin blade, comprising the following steps:

[0025] Step 1: Layer the leaves.

[0026] The layering scheme is shown in Table 1.

[0027] Table 1: Leaf layering scheme. Where h is the blade height, a is the average thickness of the blade crown and the thickest part of the blade root, and ε is the ratio of the blade height to the average thickness.

[0028]

[0029] Step 2: Rough machining allowance is reserved.

[0030] Rough machining allowance is reserved for each layer respectively, and the reservation scheme is shown in Table 2.

[0031] Table 2: Reserved plan for the margin of each layer of the rough machining blade

[0032]

[0033] Step 3: Five-axis simultaneous finishing.

[0034] Five-axis simultaneous finishing of an ultra-thin blade mon...

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Abstract

The invention discloses a process for strengthening the milling rigidity of an aluminum-alloy ultrathin-blade integral impeller. The process comprises the following steps: firstly layering the ultrathin blade of the integral impeller; reserving rough machining allowance; and carrying out layered finish machining on the ultrathin blade. According to the invention, resonance of the whole blade is reduced via non-uniform allowance and transition fillets between each layer, so vibration of the ultrathin-blade integral impeller caused by influence of cutting force in cutting can be effectively reduced, the molded surface quality and curved surface precision of the blade milled by a cutter and dimensional stability of the impeller are improved, and cutting efficiency is significantly enhanced.

Description

technical field [0001] The invention relates to a process method for enhancing the milling rigidity of an integral impeller of an ultra-thin blade made of an aluminum alloy material. Background technique [0002] With the development of computer integrated manufacturing technology, mechanical structure technology, material science and technology and other disciplines, more and more ultra-thin blade integral impellers have been applied in high-precision industrial equipment. The height and thickness of such ultra-thin blade integral impellers Ratio ≥ 15, the thinnest part of the leading and trailing edge of the blade δ min <0.5mm, the included angle α≤3° between the midline of the blade length direction and the midpoint of the normal sectional plane, and the structural feature of large distortion appears on the shape of the blade. During the entire cutting process, the material removal rate of such parts is as high as 95%, and the surface contour error is small, and the p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23C3/18
CPCB23C3/18
Inventor 吕博鑫吴雁李艳峰王西北杨帆
Owner SHANGHAI INST OF TECH
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