Numerical-control polishing method for air inlet and outlet edges of blade
A technology of intake and exhaust edge and exhaust edge, which is used in grinding/polishing equipment, grinding machines, metal processing equipment, etc., can solve problems such as poor practicability, blade damage, uneven polishing allowance, etc. Avoid damage and solve the effect of uneven polishing allowance
Active Publication Date: 2014-07-02
西安三航动力科技有限公司
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Problems solved by technology
[0007] In order to overcome the shortcomings of poor practicability of the existing blade numerical control polishing method, the present invention provides a numerical control polishing method of blade inlet and outlet edges
The method of the present invention can avoid the damage to the surface of the blade caused by the method of the background technology, solve the problem of uneven polishing allowance in the existing polishing method, and is not applicable to the area of the blade with a very small curvature radius, and has strong practicability
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[0020] The following examples refer to Figure 1-3 .
[0021] The specific steps of the numerical control polishing method for blade inlet and exhaust sides of the present invention are as follows.
[0022] The method of the invention adopts the numerical control programming technology, uses the leaf wheel as a polishing tool, and longitudinally polishes the inlet and outlet edge parts of the blades in the manner of branching and fixed-axis processing. The inlet and exhaust edges of the blades are located on both sides of the blade body, which are similar and polished in the same way. The radius of curvature of the exhaust edge profile is smaller, the degree of twist is greater, and it is more representative. Therefore, in the specific embodiment, the exhaust edge portion 7 of the blade is described as an example.
[0023] Clamp the blade 1 on the "3+1" axis CNC machine tool. The blade 1 is positioned by the tenon root so that the stacking axis of the blade 1 coincides with...
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The invention discloses a numerical-control polishing method for air inlet and outlet edges of a blade with an aim to solve the technical problem that an existing blade numerical-control polishing method is poor in practicality. The technical scheme includes that by adopting a '3+1' shaft numerical-control machine tool programming method and adopting a flap wheel to longitudinally polish the air inlet and outlet edges, that is, a tool makes feed motion along the direction of stacked shafts of the blade. The blade is positioned and clamped on the '3+1' shaft numerical-control machine tool via a tenon, the flap wheel is used as a polishing tool, a tool contact track is obtained by extracting the maximum outline of a view, tool path planning is performed, posture and track of the flap wheel can be controlled by a row-by-row fixed shaft processing method, and the air inlet and outlet edges are longitudinally polished. The numerical-control polishing method prevents damage to the surface of the blades in the prior art, solves the problems that polishing allowance is not uniform and not applicable to range of minimum curvature radius of the blade and is high in practicality.
Description
technical field [0001] The invention relates to a numerically controlled polishing method for a blade, in particular to a numerically controlled polishing method for the inlet and outlet sides of a blade. Background technique [0002] The surface quality of the blade inlet and exhaust edges has decisive significance for the reliability and failure rate of the gas turbine engine. Generally, the working efficiency of the engine depends on the working performance of the blades, and the shape of the inlet side and the exhaust side of the blade has a very important effect on the aerodynamic performance of the whole blade. [0003] Due to the thin blade, large twist, long leaf spread, and easy deformation under force, it is extremely difficult to process and polish. At present, domestically, manual polishing is mainly used for the inlet and exhaust edges of blades. The amount of removal during the manual polishing process is uneven, and the shape accuracy of the inlet and outlet...
Claims
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IPC IPC(8): B24B19/14
CPCB24B19/14
Inventor 蔺小军高源杨艳史耀耀任军学陈悦
Owner 西安三航动力科技有限公司