A high-precision turbine guider throat grinding platform and grinding method
A turbine guide, high-precision technology, applied in the direction of grinding machine, grinding frame, grinding bed, etc., can solve the problems of scrapped parts, unevenness, difficult to control the grinding amount of the throat, etc., to improve the grinding accuracy, The effect of improving performance and reducing the difficulty of manual grinding
Active Publication Date: 2018-02-02
BEIHANG UNIV
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Problems solved by technology
[0003] The technical problem of the present invention is to overcome the deficiencies of the prior art, provide a high-precision turbine guide throat grinding platform and grinding method, and solve the problem of grinding direction and throat grinding when manually using an air gun to adjust the throat of the turbine guide. It is difficult to control the amount, which leads to unevenness between the blades and the throat of different blade heights, and the problem that parts are scrapped after excessive grinding, so as to improve the grinding control accuracy and grinding efficiency
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[0015] Such as figure 1 As shown, the working principle of the air gun grinding is as follows: when the air gun head 5 of the air gun 4 contacts the guide vane 3 at a certain grinding angle α, the air source switch is turned on and the air gun head 5 rotates at a high speed, and the air gun head 5 is rotated at a high speed with a certain force. When the gun 4 moves along the air gun grinding direction 6, the air gun head 5 cuts off the material at the throat contact position of the guide vane 3, thereby achieving the purpose of adjusting the throat area of the guide 14.
[0016] Such as figure 2 , 3 As shown, the high-precision turbine guide throat grinding platform of the present invention consists of a throat normal grinding trajectory control device 7, a throat radial grinding trajectory control device 8, a guide clamping adjustment device 9, and a throat grinding angle control device 10 and high-precision limit block 12 form. Throat normal grinding track control dev...
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The invention provides a high-precision polishing platform and polishing method for a throat portion of a turbine guiding device. The high-precision polishing platform and polishing method for the throat portion of the turbine guiding device are mainly applied to working platforms with fixed blower gun tracks and measurable in polishing amount of the throat portion of the guiding device of aircraft engines. The high-precision polishing platform for the throat portion of the guiding device is composed of a throat portion normal direction polishing track control device, a throat portion radial direction polishing track control device, a throat portion polishing angle control device, a guiding device clamping adjustment device and a high-precision limiting block. By the adoption of the polishing platform, the blower gun throat portion polishing angle / polishing amount, the throat portion normal direction polishing track and the throat portion radial direction polishing track can be controlled, and the blower gun polishing precision and the consistency of the throat portions of blades are improved, so that the total pressure loss generated in the guiding device polishing process is reduced, the performance of an engine is improved, the manual polishing difficulty is lowered, and the part rejection rate is decreased. The operation platform can be widely applied to adjustment of throat portion areas of the guiding devices of various aircraft engines, and the platform is not influenced by factors such as materials of the guiding devices, the cooling / non-cooling mode and the single piece / multi-unit / integral structure.
Description
technical field [0001] The invention relates to a high-precision (grinding precision up to 0.02mm) turbine guide throat grinding platform and a grinding method, in particular to a working platform for adjusting the throat area of an aero-engine turbine guide by using an air gun. Background technique [0002] Due to manufacturing deviations in the production process of various components of the aero-engine, the performance of the complete machine cannot meet the design requirements after assembly, and engine performance debugging is required. The most effective method is to adjust the throat area of the turbine guide. At present, the turbine guide is generally used. The way the blades are grouped, the tail breaking method or the way the throat of the turbine guide blade is ground. The tail-bending method to adjust the throat area of the turbine guide generally uses external force to deform the trailing edge of the blade to change the throat area of the turbine guide, ...
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IPC IPC(8): B24B19/14B24B41/06B24B27/00B24B41/02B24B51/00
CPCB24B19/14B24B27/0069B24B41/02B24B41/06B24B51/00
Inventor 曾飞邹正平
Owner BEIHANG UNIV