A processing method for flow channels between blades of an equal-section blade-type crowned integral impeller

A technology of an integral impeller and a processing method, which is applied in the field of processing the inter-blade flow passage of the integral impeller with a cross section and a crown, can solve the problems of low efficiency and long processing time, so as to simplify analysis, improve processing efficiency, and reduce design and manufacturing. effect of difficulty

Inactive Publication Date: 2016-01-13
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] When the CNC EDM technology adopted in my country is used to process the inter-blade flow channels of the crowned integral impeller with equal cross-section blades, usually only one flow channel is processed at a time, and it takes a long time to process the multi-blade equal cross-section crowned integral impeller. , less efficient

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A processing method for flow channels between blades of an equal-section blade-type crowned integral impeller
  • A processing method for flow channels between blades of an equal-section blade-type crowned integral impeller
  • A processing method for flow channels between blades of an equal-section blade-type crowned integral impeller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0042] Such as Figure 5 The blade-type shrouded impeller with constant cross-section shown in the figure means that the shape of the cross-section of the blade in the radial direction (the radial direction of the blade in the cross-sectional view in the figure corresponds to the Z-axis direction) is consistent with the constant cross-section.

[0043] Such as image 3 As shown, a numerical control electric discharge machining method for the channel between the blades of an equal-section airfoil with a crown integral impeller includes the following processing steps: firstly design the near-formed electrodes in the inlet processing area and the outlet processing area of ​​the flow channel respectively, and first use 19 inlets The near-formed electrode in the processing area performs CNC EDM on the inlet processing area of ​​all inter-blade ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a machining method and device for vane channels of a uniform-cross section profile cowled integral impeller. The machining method comprises the following steps of firstly designing near shaped electrodes of entry machining areas and exit machining areas of the channels by applying the numerical control electric spark technology; respectively starting machining from entries and exits of the channels by using a set of entry machining area electrodes and a set of exit machining area electrodes of which the number is equal to that of the vane channels of the impeller to finish rough machining of all channels; finishing semi finish machining and finish machining on all the channels in sequence by applying a numerical control compensating motion; and processing channels with special surface requirements by adopting other finishing machining processes, such as an abrasive flow machining process and the like to achieve corresponding surface quality requirements. The machining device comprises a reference seat, a reference element, an electrode holder, electrodes and a base. Compared with a traditional machining method for the vane channels of the uniform-cross section profile cowled integral impeller, the machining method for the vane channels of the uniform-cross section profile cowled integral impeller disclosed by the invention has the technical economic characteristics that the efficiency is high and the precision is high.

Description

technical field [0001] The invention belongs to the technical field of processing an interblade flow channel of a shrouded integral impeller, and in particular relates to a method and a device for processing an interblade flow channel of an equal-section blade type crowned integral impeller. Background technique [0002] The crowned integral impeller means that a ring-shaped crown is added to the periphery of the impeller, that is, all the blade tips are connected to the same crown to form an integral impeller, which is to better meet the high-performance requirements of the modern aerospace industry. A new type of impeller structure has emerged, which has outstanding advantages such as high transmission efficiency, small number of parts, light weight, compact structure, and high structural strength, which can better meet the needs of increasing engine life, improving engine working efficiency, thrust-to-weight ratio and safety It represents the development direction of the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): B23H9/00
Inventor 赵建社郁子欣唐兰剑周旭娇刘玉杰
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products