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A Determining Method of Interfering Air Film Hole Machining Angle

A technology for processing angles and determining methods, which is applied in program control, instrumentation, computer control, etc., and can solve problems such as unfavorable interference in gas film hole processing

Active Publication Date: 2022-07-29
GUIYANG AVIC POWER PRECISION CASTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, at present, the angle conversion of the curved guide tube is mostly carried out by manual experience, and there is still a problem of large errors, which is not conducive to the processing of the interference gas film hole

Method used

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  • A Determining Method of Interfering Air Film Hole Machining Angle
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  • A Determining Method of Interfering Air Film Hole Machining Angle

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Embodiment

[0045] like Figure 1-Figure 4 As shown, this embodiment provides a method for determining the machining angle of the interference gas film hole.

[0046] By bending the linear guide according to a certain size and angle to form a curved guide, avoiding the interference area of ​​the turbine guide vane blade or the mounting plate, the electrode wire can be made to spark the gas film hole along a certain curved trajectory. processing. Therefore, it is necessary to convert the machining angle of the machine tool according to the angle of the bending guide, so that it can be used for machining the interference gas film hole.

[0047] Because there is no mature product for the bending guide, it must be designed and manufactured independently. Based on design platforms such as UG software, a specific curved guide model is designed on the three-dimensional modeling of the turbine guide vane. The bending guide should not only avoid the interference between the blade body and the m...

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Abstract

The invention relates to a method for determining the machining angle of an interference gas film hole, belonging to the technical field of aero-engine turbine blade machining. The determination method includes the following steps: establishing a machine tool coordinate system (x, y, z) with the position axis of the machine tool, taking the horizontal rotation axis of the machine tool itself as the B axis, and taking the vertical rotation axis of the machine tool itself as the C axis; system (x, y, z), determine the initial coordinates of the interference gas film hole and the initial coordinates of the curved guide; according to the initial coordinates of the interference gas film hole and the initial coordinates of the curved guide, determine when the When the B axis and the C axis drive the interference gas film hole to rotate toward the bending guide, the rotation angle of the B axis and the C axis is the processing angle of the interference gas film hole. The determination method can effectively avoid the shielding of the blade structure without reducing the design performance of the air-cooling system of the turbine blade, and realize the EDM of the interference gas film hole, thereby meeting the design performance of the advanced aero-engine.

Description

technical field [0001] The invention belongs to the technical field of aero-engine turbine blade processing, and particularly relates to a method for determining the processing angle of an interference gas film hole. Background technique [0002] The air film hole is a design structure used to reduce the thermal shock of the turbine blade at the hot end of the engine and increase the temperature limit of the turbine blade to ensure the stable operation of the turbine blade. Due to the complexity of turbine blades, in order to achieve sufficient cooling effect, the air film hole design elements are often blocked from the blade structure, which is called interference air film holes. [0003] The interfering air film hole is a typical design feature of turbine blades with high temperature bearing performance. The center line of the air film hole passes through the blade structure or is too close to the blade structure, causing processing occlusion, resulting in traditional proc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23H9/14B23H1/00G05B19/408
CPCB23H9/14B23H1/00G05B19/4086
Inventor 谭其松赵前松贾敬惠王林伟张吉阳熊宗平代祥勇汪立白晓富李跃飞汤飞龙付秋伟龙再云郑兴林
Owner GUIYANG AVIC POWER PRECISION CASTING
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