Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Tool for machining inverted cone characteristics of turbine blade

A technology of steam turbine blades and inverted cones, which is applied in the direction of manufacturing tools, metal processing equipment, milling cutters, etc., can solve the problems of high processing cost, low processing efficiency, and low pass rate of appearance quality, and improve processing efficiency and tool life. , The effect of eliminating the traces of the knife

Pending Publication Date: 2019-02-22
WUXI TURBINE BLADE
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the technical problems of low processing efficiency, high processing cost, and low pass rate of appearance quality when using a flat milling cutter and a tapered ball-end cutter to jointly process the characteristics of the reverse cone of the steam turbine blade, the invention provides a method for the reverse cone of the steam turbine blade. The tool for feature processing, which can process both the end face of the boss and the inverted cone surface of the boss, has high processing efficiency, low processing cost, and can completely eliminate the appearance quality problem of the boss feature

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
  • Tool for machining inverted cone characteristics of turbine blade
  • Tool for machining inverted cone characteristics of turbine blade
  • Tool for machining inverted cone characteristics of turbine blade

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] See Figure 6 to Figure 7 , a cutting tool for machining the reverse cone feature of steam turbine blades according to the present invention, which includes a standard end mill 11, the standard end mill includes a bottom edge 12 and a side edge 13, and the number of the bottom edge 12 and the side edge 13 is equal to and greater than Or equal to four, the side edge 13 is helical and the helix is ​​a conical helix, the helix diameter of the conical helix gradually increases from the upper end of the side edge 13 to the bottom edge 12, and the half-cone angle θ of the conical helix is ​​less than or equal to the steam turbine The back taper angle α of the boss of the blade and the height h of the side edge 13 are greater than or equal to 10 mm, which can meet the cutting processing requirements of the back taper feature. The side edge 13 is coated with a wear-resistant coating, which can improve the service life of the tool. The half-cone angle θ of the conical helix can ...

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

PropertyMeasurementUnit
Heightaaaaaaaaaa
Login to View More

Abstract

The invention provides a tool for machining inverted cone characteristics of a turbine blade. By means of the tool, the problems that at present, when a face milling cutter and a taper ball head toolare jointly used for machining the inverted cone characteristics of the turbine blade, the machining efficiency is low, the machining cost is high and the appearance quality yield is low can be solved. The tool comprises a standard end mill. The standard end mill comprises a bottom blade and a spiral side blade, the spiral of the side blade is a conical spiral, the spiral diameter of the conical spiral is gradually increased in the direction from the upper end of the side blade to the bottom blade, and the half cone angle of the conical spiral is smaller than or equal to a boss inverted cone angle of the turbine blade.

Description

technical field [0001] The invention relates to the field of steam turbine blade processing, in particular to a tool for machining the inverted cone feature of the steam turbine blade. Background technique [0002] Such as figure 1 As shown, the reverse cone feature of the steam turbine blade is mainly composed of the boss end surface 1 and the boss reverse cone surface 2, α is the boss reverse cone angle, α+β=90°. Due to problems such as difficult forming and detection in the forging stage of the reverse cone feature, the blank margin is relatively large, resulting in long processing time, large tool consumption and high processing cost for the reverse cone part in the process of finished product processing. [0003] The machining scheme of reverse taper feature commonly used in the industry is: on a five-axis CNC machine tool, first use a very small plane milling cutter 3 to mill the end face 1 of the boss in layers (such as figure 2 shown), and then use the tapered bal...

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
IPC IPC(8): B23C5/12
CPCB23C5/12
Inventor 董欣欣王成富章奇杨敏陆爱群
Owner WUXI TURBINE BLADE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com