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Cutting load space reconstruction method of fir-shaped tooth profile finish broach

A technology of cutting load and space reconstruction, which is applied in special data processing applications, instruments, electrical digital data processing, etc.

Pending Publication Date: 2020-11-17
SHANGHAI JIAO TONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the defects of the cutting force modeling of the fir-tree-shaped tenon-groove finishing broach of the existing heavy-duty gas turbine disk, the present invention proposes a cutting load space reconstruction method for the fir-tree-shaped tooth profile finishing broach

Method used

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  • Cutting load space reconstruction method of fir-shaped tooth profile finish broach
  • Cutting load space reconstruction method of fir-shaped tooth profile finish broach
  • Cutting load space reconstruction method of fir-shaped tooth profile finish broach

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Embodiment Construction

[0021] Such as figure 1 As shown, this embodiment relates to a cutting load space reconstruction method for a fir tree-shaped tooth profile fine broach. According to the fir tree-shaped tenon-groove profile, the coordinates of the discrete points on the edge curve of the fine broach are obtained through coordinate rotation transformation. The B-spline curve fits the high-order curve of the fir tree tooth profile, discretizes the cutting edge curve, and obtains the cutting edge microelement, calculates the cutting layer area, cutting edge contact arc length and cutting edge inclination angle, and simulates the cutting edge based on the experimental data. Finally, the spatial distribution of the cutting force of the fir tree-shaped fine broach tooth profile is obtained through integral solution and reconstruction.

[0022] The specific steps of this embodiment include:

[0023] Step 1, such as figure 2 As shown, the mapping between the fir tree-shaped tenon-groove profile lin...

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Abstract

The invention discloses a cutting load space reconstruction method of a fir-shaped tooth profile finish broach. The method comprises the following steps of establishing a cutting force model of a single-tooth fir-shaped mortise curve edge finish broach on the basis of a fir-shaped mortise finish broach tooth profile curve fitting equation of a turbine disc of a heavy-duty gas turbine; and discretizing the tooth profile high-order curve, fitting an oblique angle cutting force coefficient, and reconstructing to obtain the spatial distribution of the cutting force load of the fir-shaped tooth profile finish broach on the curve cutting edge. The cutting load space reconstruction of the fir-shaped tooth profile finish broach can be realized quickly and accurately, and support is provided for the design of the fir-shaped tooth profile finish broach.

Description

technical field [0001] The invention relates to a technology in the field of mechanical processing, in particular to a cutting load space reconstruction method of a fir-tree-shaped tooth profile fine broach, a combination broach fir-tree-shaped broach for processing the tenon and groove of a wheel disk of a heavy-duty gas turbine Reconstructing the edge profile of the tooth profile and constructing the spatial distribution of the broaching load along the edge profile. Background technique [0002] The tongue and groove broaching of heavy-duty gas turbine compressor disks and turbine disks is a key quality control process in gas turbine manufacturing, and its processing quality directly affects the ability of the disk to withstand complex thermal alternating working loads. Considering factors such as the profile size of the tenon and groove, the broaching load, and the working stroke of the broaching machine, the tenon and groove of the wheel disk of the heavy-duty gas turbin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/17G06F30/20
CPCG06F30/17G06F30/20G06F2119/14
Inventor 安庆龙陈杰明伟伟陈明刘志强马海善
Owner SHANGHAI JIAO TONG UNIV