Process for strengthening milling rigidity of aluminum-alloy ultrathin-blade integral impeller

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

Inactive Publication Date: 2015-08-05
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 for strengthening milling rigidity of aluminum-alloy ultrathin-blade integral impeller
  • Process for strengthening milling rigidity of aluminum-alloy ultrathin-blade integral impeller
  • Process for strengthening milling rigidity of aluminum-alloy ultrathin-blade integral impeller

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Embodiment Construction

[0023] The present invention will be further described below based on the drawings.

[0024] A process method for enhancing the milling rigidity of an aluminum alloy material ultra-thin blade integral impeller includes 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 height of the leaf, a is the average thickness of the thickest part of the leaf crown and root, and ε is the ratio of the leaf height to the average thickness.

[0028]

[0029] Step 2: Reserve the rough machining allowance.

[0030] The rough machining allowances are reserved for each layer respectively, and the reserved plan is shown in Table 2.

[0031] Table 2: The reserve plan for each layer of rough machining blade

[0032]

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

[0034] Use ball-end milling cutter to perform 5-axis linkage finishing of ultra-thin blade integral impeller. For the different margins reser...

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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 aluminum alloy material ultra-thin blade. 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 are used in high-precision industrial equipment. The height and thickness of such ultra-thin blade integral impellers Ratio ≥15, the thinnest part of the front and rear edges of the blade δ min <0.5mm, the angle α between the midpoints of the normal cut plane of the midline in the length direction of the blade is less than or equal to 3°, and the shape of the blade has a structural feature of large distortion. In the entire cutting process, the material removal rate of such parts is as high as 95%, and the error of the curved surface profile is small, and the precision is ex...

Claims

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Application Information

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Patent Type & Authority Applications(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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