Numerical control polishing method for blade edge plate and blade transitional arc part
A technology of transitional arc and blade edge plate, which is applied in the direction of grinding/polishing equipment, grinding machines, metal processing equipment, etc., can solve the problems that cannot meet the needs of mass production of blades, achieve the improvement of polishing efficiency and stability, and the surface Stable quality, good polishing consistency
Inactive Publication Date: 2013-05-01
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology
[0004] In order to solve the problem that the existing manual polishing method cannot meet the needs of large-scale production of blades, the present invention proposes a numerically controlled polishing method for the transition arc between the blade edge plate and the blade body
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Embodiment Construction
[0019] Describe the present invention below in conjunction with specific embodiment:
[0020] In this embodiment, the transitional arc 8 between the blade edge plate and the airfoil of a certain type of aero-engine is polished.
[0021] Step 1: Obtain the radius R of the transition arc 8 between the blade edge plate and the blade body from the blade design drawing, and the radius dimension accuracy is ±0.01mm;
[0022] Step 2: Machining the model by milling on the CNC milling machine: refer to the attached figure 1 , the master base 1 is a cuboid, and the bottom surface of the cuboid is plane ground, and the flatness is ≤0.01; there are a master 2 and a guide groove 3 in the master base 1, and the master 2 is a quarter concave spherical surface, which is used for processing and polishing The radius of the concave spherical surface is the same as the radius R of the transition arc, and the distance between the center of the concave spherical surface and the vertical radial pos...
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The invention provides a numerical control polishing method for a blade edge plate and a blade transitional arc part. The method comprises the following steps of: machining a profiling mold according to a size R, wherein the radius of a transitional arc is R; machining a polishing wheel by using the profiling mold as a mold; and determining a polishing track in a numerical control system, and finishing the numerical control polishing of the blade edge plate and the blade transitional arc part by using the machined polishing wheel. In the method, the profiling mold for blades in the same batchis manufactured, and the polishing wheel is machined, so that the transitional arc part can be conveniently polished mechanically and automatically, the quality stability of the surface of the transitional arc part can be ensured, polishing consistency is high, and polishing efficiency and stability are greatly improved.
Description
technical field [0001] The invention relates to the field of mechanical processing of engine blades, in particular to a numerically controlled polishing method for the transition arc portion between the blade edge plate and the blade body. Background technique [0002] In the field of engines, especially in the field of aero-engine machining, the processing quality of blades has an important impact on the reliability of aero-engines, and the surface quality of blades directly affects the aerodynamic performance of blades, which in turn affects the performance of aero-engines. Polishing processing is the main method to improve the surface quality of blades. There are also many open technical documents that propose various equipment and methods for blade polishing. A method and equipment for polishing the surface of a gas turbine blade, and a blade polishing machine is designed in patent 200520020307.4, but these disclosed technologies often focus on polishing the blade body p...
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IPC IPC(8): B24B19/14B24D18/00
Inventor 蔺小军史耀耀张军锋段继豪任军学李小彪杨阔董婷
Owner NORTHWESTERN POLYTECHNICAL UNIV