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Five-axis plunge milling machining method for ruled surface impeller

A processing method and ruled surface technology, applied in the direction of metal processing equipment, milling machine equipment, manufacturing tools, etc., can solve the problem of not considering the calculation criteria, the inability to guarantee the material removal rate and processing efficiency of plunge milling, and the unfavorable research of plunge milling, etc. question

Inactive Publication Date: 2012-10-10
SHENYANG POLYTECHNIC UNIV
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Problems solved by technology

However, this method does not consider the calculation criteria of line spacing and step spacing, and cannot guarantee the material removal rate and processing efficiency of plunge milling (the generated tool path may not be the shortest), which is not conducive to the deep research of plunge milling.
[0010] In addition, plunge milling is a relatively new processing method, which is still in the research stage
Usually, the ordinary plunge-milling method can only be completed on a three-coordinate machine tool, and it is usually powerless for workpieces that require a five-coordinate machine tool to complete processing such as impellers with narrow flow channels, large blade distortions, and deep cavities.

Method used

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  • Five-axis plunge milling machining method for ruled surface impeller
  • Five-axis plunge milling machining method for ruled surface impeller
  • Five-axis plunge milling machining method for ruled surface impeller

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Embodiment Construction

[0075] Below in conjunction with accompanying drawing, the present invention will be further described:

[0076] The invention is a five-coordinate plunge-milling processing method for a ruled surface impeller, which is characterized in that: according to the offset boundary vector of the ruled surface blade, the tool axis vector of the plunge-milling process is calculated by using the quaternion interpolation method, and the method is proposed and determined The line distance and step distance of the five-coordinate plunge milling process plan the tool machining trajectory, so as to process the workpiece. The specific steps of this method are as follows:

[0077] a. Generation of boundary vectors:

[0078] For the impeller whose blade shape is a free-form surface, the free-form surface can be fitted into a ruled surface by using the method proposed in "Research on Plunging and Milling Rough Machining Technology of Open Integral Blisk Channel" published by Hu Chuangguo et al. ...

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Abstract

The invention discloses a five-axis plunge milling machining method for a ruled surface impeller. The method comprises the following steps of: generating a boundary vector, interpolating the boundary vector, calculating the row pitch and step pitch, calculating a cutter center point, and planning a cutter path until machining of a ruled surface impeller part is finished. By the method, the defect of low rough machining efficiency in the prior art is overcome, the material removal rate and machining efficiency of the plunge milling are guaranteed, and the method is applicable to popularization and application.

Description

technical field [0001] The invention belongs to the field of numerical control processing, and mainly relates to an impeller plunge-milling processing method, in particular to a five-coordinate plunge-milling processing method of a ruled surface impeller. Background technique [0002] The plunge milling method is also known as the z-axis milling method. Its working method is similar to drilling. The tool is fed along the spindle direction, and the cutting edge at the bottom is used for drilling and milling combined cutting, such as figure 1 shown. [0003] The plunge milling method is one of the most effective processing methods for complex curved surface metal cutting to achieve high removal rate, and is widely used in the cutting of parts with vertical side walls. The processing efficiency of the plunge milling method is much higher than that of the conventional milling method. When it is necessary to quickly remove a large amount of metal materials, the plunge milling me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/19B23C3/18
Inventor 梁全
Owner SHENYANG POLYTECHNIC UNIV
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