Centrifugal impeller cutting machining method and device, and centrifugal impeller machining equipment

A centrifugal impeller and cutting processing technology, which is applied in the field of mechanical cutting processing, can solve the problems of uneven machining residual amount of parts, blade deformation error, etc., and achieve the effect of reducing processing error and improving processing accuracy

Inactive Publication Date: 2019-04-05
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many machining errors in the actual five-axis linkage CNC machine tool machining. For example, the cutting force will cause the blade deformation error, which will lead to the uneven machining residue of the part. The tool movement mode, the structure and interpolation method of the five-axis linkage CNC machine tool will affect Tool machining error

Method used

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  • Centrifugal impeller cutting machining method and device, and centrifugal impeller machining equipment
  • Centrifugal impeller cutting machining method and device, and centrifugal impeller machining equipment
  • Centrifugal impeller cutting machining method and device, and centrifugal impeller machining equipment

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no. 1 example

[0036] see figure 1 , which is a schematic flowchart of a centrifugal impeller cutting method provided by the first embodiment of the present invention. The centrifugal impeller cutting processing method provided by the embodiment of the present invention is suitable for a multi-axis machine tool, such as a five-axis linkage CNC machining machine tool, for a centrifugal impeller, such as an integral centrifugal impeller. like figure 1 As shown, the centrifugal impeller cutting processing method provided by the embodiment of the present invention includes the steps:

[0037] S11: Construct the blade compensation surface after simulated machining deformation;

[0038] S13: Establish a tool envelope surface based on the blade compensation surface;

[0039] S15: Analyze the error distribution between the tool envelope surface and the blade compensation surface;

[0040] S17: Optimizing the tool path according to the error distribution to obtain an optimized tool path; and

[...

no. 2 example

[0052] In addition, the second embodiment of the present invention provides a centrifugal impeller cutting method, including:

[0053] First, create the blade compensation surface. The three-dimensional model of the centrifugal impeller is established, and the three-dimensional model of the overall centrifugal impeller is simulated, analyzed and processed, and finally the blade compensation surface after the elastic deformation of the centrifugal impeller is constructed. Specifically, the three-dimensional model of the centrifugal impeller is established in the three-dimensional modeling software, and the three-dimensional model of the centrifugal impeller is imported into the analysis software for static analysis and milling process simulation. Perform related settings and definitions in the analysis software, for example, define material properties, specify element types, mesh division, constraint definition, define several tool position points for u-direction parameters and...

no. 3 example

[0100] like Figure 14 As shown, the third embodiment of the present invention provides a centrifugal impeller cutting processing device 10 . Centrifugal impeller cutting processing device 10 includes:

[0101] The blade compensation surface construction module 110 is used to construct the blade compensation surface after simulating machining deformation;

[0102] A cutter envelope surface establishing module 120, configured to establish a cutter envelope surface based on the blade compensation surface;

[0103] The error distribution analysis module 130 is used to analyze the error distribution of the tool envelope surface and the blade compensation surface;

[0104] The tool trajectory optimization module 140 is used to obtain the optimized tool trajectory according to the error distribution and the tool position optimization algorithm; and

[0105] The numerical control program generation module 150 is used to generate a numerical control program according to the optimiz...

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Abstract

The embodiment of the invention discloses a centrifugal impeller cutting machining method and device, and centrifugal impeller machining equipment. The centrifugal impeller cutting machining method comprises the steps of establishing a three-dimensional model of an impeller, conducting simulation machining analysis on the three-dimensional model and establishing a simulation machined and deformedblade compensation surface according to the analysis result; planning a tool path according to the blade compensation surface; establishing a tool enveloping surface according to the tool path and theenveloping theory; analyzing error distribution of the tool enveloping surface and the blade compensation surface; obtaining an optimized tool path according to the error distribution and the tool location optimization algorithm; and generating a numerical control program according to the optimized tool path so as to machine the centrifugal impeller. The centrifugal impeller cutting machining method provided by the embodiment of the invention is controllable, the machining error of the centrifugal impeller is reduced, and the machining precision of the centrifugal impeller is improved accordingly.

Description

technical field [0001] The invention relates to mechanical cutting processing technology, in particular to a centrifugal impeller cutting processing method and device and a centrifugal impeller cutting processing equipment. Background technique [0002] Centrifugal impeller is a key component of high-speed rotation in aero-engine, and its machining quality, such as machining accuracy, directly affects the working performance of aero-engine. Due to the complex geometric features of the centrifugal impeller and the low stiffness of its blades, the centrifugal impeller needs to be processed by a five-axis CNC machine to meet the surface quality requirements of the parts. Five-axis CNC machining is an advanced machining technology, which is widely used in the machining of complex curved parts. The five-axis CNC machine tool cuts off the excess material of the part by controlling the tool to move the complex trajectory in space. There are many machining errors in the actual fiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23C3/18
CPCB23C3/18B23C2215/44
Inventor 胡自化张旭东秦长江陈小告陈平浪毛美姣宋铁军
Owner XIANGTAN UNIV
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